-///////////////////////////////////////////////////////////////////////////////
-// RLN - Reboot's Linker for the Atari Jaguar Console System
-// RLN.C - Application Code
-// Copyright (C) 199x, Allan K. Pratt, 2011 Reboot & Friends
+//
+// RLN - Reboot's Linker for the Atari Jaguar console system
+// Copyright (C) 199x, Allan K. Pratt, 2014-2017 Reboot & Friends
+//
#include "rln.h"
+//#include <assert.h>
+
+unsigned errflag = 0; // Error flag, goes TRUE on error
+unsigned waitflag = 0; // Wait for any keypress flag
+unsigned versflag = 0; // Version banner has been shown flag
+unsigned aflag = 0; // Absolute linking flag
+unsigned bflag = 0; // Don't remove mulitply def locals flag
+unsigned cflag = 0; // COF executable
+unsigned dflag = 0; // Wait for key after link flag
+unsigned gflag = 0; // Source level debug include flag
+unsigned lflag = 0; // Add local symbols to output flag
+unsigned mflag = 0; // Produce symbol load map flag
+unsigned oflag = 0; // Output filename specified
+unsigned rflag = 0; // Segment alignment size flag
+unsigned sflag = 0; // Output only global symbols
+unsigned vflag = 0; // Verbose flag
+unsigned wflag = 0; // Show warnings flag
+unsigned zflag = 0; // Suppress banner flag
+unsigned pflag = 0, uflag = 0; // Unimplemented flags (partial link, don't abort on unresolved symbols)
+unsigned hd = 0; // Index of next file handle to fill
+unsigned secalign = 7; // Section Alignment (8=phrase)
+unsigned tbase = 0; // TEXT base address
+unsigned dbase = 0; // DATA base address
+unsigned bbase = 0; // BSS base address
+unsigned textoffset = 0; // COF TEXT segment offset
+unsigned dataoffset = 0; // COF DATA segment offset
+unsigned bssoffset = 0; // COF BSS segment offset
+unsigned displaybanner = 1; // Display version banner
+unsigned symoffset = 0; // Symbol table offset in output file
+unsigned dbgsymbase = 0; // Debug symbol base address
+int noheaderflag = 0; // No header flag for ABS files
+int hflags; // Value of the arg to -h option
+int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4
+int tval, dval, bval; // Values of these abs bases
+int hflag[NHANDLES]; // True for include files
+int handle[NHANDLES]; // Open file handles
+int textsize, datasize, bsssize; // Cumulative segment sizes
+char libdir[FARGSIZE * 3]; // Library directory to search
+char ofile[FARGSIZE]; // Output file name (.o)
+char * name[NHANDLES]; // Associated file names
+char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0]
+char * hsym1[SYMLEN]; // First symbol for include files
+char * hsym2[SYMLEN]; // Second symbol for include files
+struct OFILE * plist = NULL; // Object image list pointer
+struct OFILE * plast; // Last object image list pointer
+struct OFILE * olist = NULL; // Pointer to first object file in list
+struct OFILE * olast; // Pointer to last object file in list
+char * arPtr[512];
+uint32_t arIndex = 0;
+struct HREC * htable[NBUCKETS]; // Hash table
+struct HREC * unresolved = NULL; // Pointer to unresolved hash list
+char * ost; // Output symbol table
+char * ost_ptr; // Output symbol table; current pointer
+char * ost_end; // Output symbol table; end pointer
+char * oststr; // Output string table
+char * oststr_ptr; // Output string table; current pointer
+char * oststr_end; // Output string table; end pointer
+int ost_index = 0; // Index of next ost addition
+uint8_t nullStr[1] = "\x00"; // Empty string
+struct HREC * arSymbol = NULL; // Pointer to AR symbol table
+
+
+// Function prototypes
+struct HREC * LookupHREC(char *);
+char * PathTail(char *);
+void ShowHelp(void);
+void ShowVersion(void);
+
+
+//
+// Get a long word from memory
+//
+static inline uint32_t GetLong(uint8_t * src)
+{
+ return (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
+}
+
+
+//
+// Put a long word into memory
+//
+static inline void PutLong(uint8_t * dest, uint32_t val)
+{
+ *dest++ = (uint8_t)(val >> 24);
+ *dest++ = (uint8_t)(val >> 16);
+ *dest++ = (uint8_t)(val >> 8);
+ *dest = (uint8_t)val;
+}
+
+
+//
+// Get a word from memory
+//
+static inline uint16_t GetWord(uint8_t * src)
+{
+ return (src[0] << 8) | src[1];
+}
+
+
+//
+// Put a word into memory
+//
+static inline void PutWord(uint8_t * dest, uint16_t val)
+{
+ *dest++ = (uint8_t)(val >> 8);
+ *dest = (uint8_t)val;
+}
+
+
+//
+// Find passed in file's length in bytes
+// N.B.: This also resets the file's pointer to the start of the file
+//
+long FileSize(int fd)
+{
+ long size = lseek(fd, 0, SEEK_END);
+ lseek(fd, 0, SEEK_SET);
+
+ return size;
+}
+
+
+//
+// For this object file, add symbols to the output symbol table after
+// relocating them. Returns TRUE if OSTLookup returns an error (-1).
+//
+int DoSymbols(struct OFILE * ofile)
+{
+ int type;
+ long value;
+ int index;
+ int j;
+ struct HREC * hptr;
+ uint32_t tsoSave, dsoSave, bsoSave;
+
+ // Point to first symbol record in the object file
+ char * symptr = (ofile->o_image + 32
+ + ofile->o_header.tsize
+ + ofile->o_header.dsize
+ + ofile->o_header.absrel.reloc.tsize
+ + ofile->o_header.absrel.reloc.dsize);
+
+ // Point to end of symbol record in the object file
+ char * symend = symptr + ofile->o_header.ssize;
+
+ uint32_t tsegoffset = ofile->segBase[TEXT];
+ uint32_t dsegoffset = ofile->segBase[DATA];
+ uint32_t bsegoffset = ofile->segBase[BSS];
+
+ // Save segment vars, so we can restore them if needed
+ tsoSave = tsegoffset, dsoSave = dsegoffset, bsoSave = bsegoffset;
+
+ // Process each record in the object's symbol table
+ for(; symptr!=symend; symptr+=12)
+ {
+ index = GetLong(symptr + 0); // Obtain symbol string index
+ type = GetLong(symptr + 4); // Obtain symbol type
+ value = GetLong(symptr + 8); // Obtain symbol value
+
+ // Global/External symbols have a pre-processing stage
+ // N.B.: This destroys the t/d/bsegoffset discovered above. So if a
+ // local symbol follows a global/exported one, it gets wrong
+ // info! [Should be FIXED now]
+ if (type & 0x01000000)
+ {
+ // Obtain the string table index for the relocation symbol, look
+ // for it in the globals hash table to obtain information on that
+ // symbol.
+ hptr = LookupHREC(symend + index);
+
+ if (hptr == NULL)
+ {
+ // Try to find it in the OST
+ int ostIndex = OSTLookup(symend + index);
+
+ if (ostIndex == -1)
+ {
+ printf("DoSymbols(): Symbol not found in hash table: '%s' (%s)\n", symend + index, ofile->o_name);
+ return 1;
+ }
+
+ if (vflag > 1)
+ printf("DoSymbols(): Skipping symbol '%s' (%s) found in OST...\n", symend + index, ofile->o_name);
+
+ // If the symbol is not in any .a or .o units, it must be one
+ // of the injected ones (_TEXT_E, _DATA_E, or _BSS_E), so skip
+ // it [or maybe not? In verbose mode, we see nothing...!]
+ continue;
+ }
+
+ tsegoffset = hptr->h_ofile->segBase[TEXT];
+ dsegoffset = hptr->h_ofile->segBase[DATA];
+ bsegoffset = hptr->h_ofile->segBase[BSS];
+
+ // Update type with global type
+ type = hptr->h_type;
+
+ // Remove global flag if absolute
+ if (type == (T_GLBL | T_ABS))
+ type = T_ABS;
+
+ // If the global/external has a value then update that value in
+ // accordance with the segment sizes of the object file it
+ // originates from
+ if (hptr->h_value)
+ {
+ switch (hptr->h_type & 0x0E000000)
+ {
+ case T_ABS:
+ case T_TEXT:
+ value = hptr->h_value;
+ break;
+ case T_DATA:
+ value = hptr->h_value - hptr->h_ofile->o_header.tsize;
+ break;
+ case T_BSS:
+ value = hptr->h_value
+ - (hptr->h_ofile->o_header.tsize
+ + hptr->h_ofile->o_header.dsize);
+ break;
+ default:
+ if (vflag > 1)
+ printf("DoSymbols: No adjustment made for symbol: %s (%s) = %X\n", symend + index, ofile->o_name, hptr->h_value);
+ }
+ }
+ }
+ // If *not* a global/external, use the info from passed in object
+ else
+ tsegoffset = tsoSave, dsegoffset = dsoSave, bsegoffset = bsoSave;
+
+ // Process and update the value dependent on whether the symbol is a
+ // debug symbol or not
+ // N.B.: Debug symbols are currently not supported
+ if (type & 0xF0000000)
+ {
+ // DEBUG SYMBOL
+ // Set the correct debug symbol base address (TEXT segment)
+#if 0
+ dbgsymbase = 0;
+
+ for(j=0; (unsigned)j<dosymi; j++)
+ dbgsymbase += obj_segsize[j][0];
+#else
+ dbgsymbase = ofile->segBase[TEXT];
+#endif
+
+ switch (type & 0xFF000000)
+ {
+ case 0x64000000:
+ value = tval + dbgsymbase;
+ break;
+ case 0x44000000:
+ case 0x46000000:
+ case 0x48000000:
+ value = tval + dbgsymbase + value;
+ default:
+ break;
+ }
+
+ PutLong(symptr + 8, value);
+ }
+ else
+ {
+ // NON-DEBUG SYMBOL
+ // Now make modifications to the symbol value, local or global,
+ // based on the segment sizes of the object file currently being
+ // processed.
+ switch (type & T_SEG)
+ {
+ case T_ABS:
+ break;
+ case T_TEXT:
+ value = tbase + tsegoffset + value;
+ PutLong(symptr + 8, value);
+ break;
+ case T_DATA:
+ if (type & T_GLBL)
+ value = dbase + dsegoffset + value;
+ else
+ value = dbase + dsegoffset + (value
+ - ofile->o_header.tsize);
+
+ PutLong(symptr + 8, value);
+ break;
+ case T_BSS:
+ if (type & T_GLBL)
+ value = bbase + bsegoffset + value;
+ else
+ value = bbase + bsegoffset
+ + (value - (ofile->o_header.tsize
+ + ofile->o_header.dsize));
+
+ PutLong(symptr + 8, value);
+ break;
+ default:
+ break;
+ }
+ }
+
+ // Add to output symbol table if global/extern, or local flag is set
+ if (isglobal(type) || lflag)
+ {
+ if (vflag > 1)
+ printf("DoSymbols: Adding symbol: %s (%s) to OST...\n", symend + index, ofile->o_name);
+
+ index = OSTAdd(symend + index, type, value);
+
+ if (index == -1)
+ {
+ printf("DoSymbols(): Failed to add symbol '%s' to OST!\n", symend + index);
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+//
+// Free up hash memory
+//
+void FreeHashes(void)
+{
+ int i;
+
+ for(i=0; i<NBUCKETS; i++)
+ {
+ struct HREC * hptr = htable[i];
+
+ while (hptr)
+ {
+ struct HREC * htemp = hptr->h_next;
+ free(hptr);
+ hptr = htemp;
+ }
+ }
+}
+
+
+//
+// Add all global and external symbols to the output symbol table
+// [This is confusing--is it adding globals or locals? common == local!
+// but then again, we see this in the header:
+// #define T_COMMON (T_GLOBAL | T_EXTERN) but that could be just bullshit.]
+//
+// Common symbols have a different number in the "value" field of the symbol
+// table (!0) than purely external symbols do (0). So you have to look at the
+// type (T_GLBL) *and* the value to determine if it's a common symbol.
+//
+long DoCommon(void)
+{
+ struct HREC * hptr;
+ int i;
+
+ for(i=0; i<NBUCKETS; i++)
+ {
+ for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
+ {
+//NO! if (iscommon(hptr->h_type))
+ if (isglobal(hptr->h_type))// || isextern(hptr->h_type))
+ {
+// Skip if in *.a file... (does nothing)
+//if (hptr->h_ofile->isArchiveFile)
+// continue;
+
+//Is this true? Couldn't an absolute be exported???
+ if (hptr->h_type == (T_GLBL | T_ABS))
+ hptr->h_type = T_ABS; // Absolutes *can't* be externals
+
+ if (OSTAdd(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
-unsigned errflag = 0; // Error flag, goes TRUE on error
-unsigned waitflag = 0; // Wait for any keypress flag
-unsigned versflag = 0; // Version banner has been shown flag
-unsigned aflag = 0; // Absolute linking flag
-unsigned bflag = 0; // Don't remove mulitply def locals flag
-unsigned cflag = 0; // COF executable
-unsigned dflag = 0; // Wait for key after link flag
-unsigned gflag = 0; // Source level debug include flag
-unsigned lflag = 0; // Add local symbols to output flag
-unsigned mflag = 0; // Produce symbol load map flag
-unsigned oflag = 0; // Output filename specified
-unsigned rflag = 0; // Segment alignment size flag
-unsigned sflag = 0; // Output only global symbols
-unsigned vflag = 0; // Verbose flag
-unsigned zflag = 0; // Suppress banner flag
-unsigned pflag, uflag, wflag; // Unimplemented flags
-unsigned hd = 0; // Index of next file handle to fill
-unsigned secalign = 7; // Section Alignment (8=phrase)
-unsigned tbase = 0; // TEXT base address
-unsigned dbase = 0; // DATA base address
-unsigned bbase = 0; // BSS base address
-unsigned textoffset = 0; // COF TEXT segment offset
-unsigned dataoffset = 0; // COF DATA segment offset
-unsigned bssoffset = 0; // COF BSS segment offset
-unsigned displaybanner = 1; // Display version banner
-unsigned symoffset = 0; // Symbol table offset in output file
-unsigned dosymi = 0; // Dosym() processing iterator
-unsigned dbgsymbase = 0; // Debug symbol base address
-//unsigned symtrunc = 0; // Symbol truncation -i and -ii
-int noheaderflag = 0; // No header flag for ABS files
-int hflags; // Value of the arg to -h option
-int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4
-int tval, dval, bval; // Values of these abs bases
-int hflag[NHANDLES]; // True for include files
-int handle[NHANDLES]; // Open file handles
-int textsize, datasize, bsssize; // Cumulative segment sizes
-char libdir[FARGSIZE * 3]; // Library directory to search
-char ofile[FARGSIZE]; // Output file name (.o)
-char * name[NHANDLES]; // Associated file names
-char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0]
-char * hsym1[SYMLEN]; // First symbol for include files
-char * hsym2[SYMLEN]; // Second symbol for include files
-struct OFILE * plist = NULL; // Object image list pointer
-struct OFILE * plast; // Last object image list pointer
-struct OFILE * olist = NULL; // Pointer to first object file in list
-struct OFILE * olast; // Pointer to last object file in list
-char obj_fname[512][FNLEN]; // Object file names
-unsigned obj_segsize[512][3]; // Object file seg sizes; TEXT,DATA,BSS
-unsigned obj_index = 0; // Object file index/count
-struct HREC * htable[NBUCKETS]; // Hash table
-struct HREC * unresolved = NULL; // Pointer to unresolved hash list
-struct HREC * lookup(char *); // Hash lookup
-char * ost; // Output symbol table
-char * ost_ptr; // Output symbol table; current pointer
-char * ost_end; // Output symbol table; end pointer
-char * oststr; // Output string table
-char * oststr_ptr; // Output string table; current pointer
-char * oststr_end; // Output string table; end pointer
-int ost_index = 0; // Index of next ost addition
-int endian; // Processor endianess
-
-
-//
-// --- Get a Long Word from Memory --------------------------------------------
-//
-unsigned getlong(char * src)
+
+//
+// Add a symbol's name, type, and value to the OST.
+// Returns the index of the symbol in OST, or -1 for error.
+//
+int OSTAdd(char * name, int type, long value)
{
- unsigned temp;
- char * out;
-
- out = (char *)&temp;
+ int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
+ int ostresult; // OST index result
+ int slen = strlen(name);
- if (endian == 1)
+ // If the OST or OST string table has not been initialised then do so
+ if (ost_index == 0)
{
- *out++ = src[0];
- *out++ = src[1];
- *out++ = src[2];
- *out = src[3];
+ ost = malloc(OST_BLOCK);
+ oststr = malloc(OST_BLOCK);
+
+ if (ost == NULL)
+ {
+ printf("OST memory allocation error.\n");
+ return -1;
+ }
+
+ if (oststr == NULL)
+ {
+ printf("OSTSTR memory allocation error.\n");
+ return -1;
+ }
+
+ ost_ptr = ost; // Set OST start pointer
+ ost_end = ost + OST_BLOCK; // Set OST end pointer
+
+ PutLong(oststr, 0x00000004); // Just null long for now
+ oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
+ PutLong(oststr_ptr, 0x00000000); // Null terminating long
+ oststr_end = oststr + OST_BLOCK;
}
else
{
- *out++ = src[3];
- *out++ = src[2];
- *out++ = src[1];
- *out = src[0];
+ // If next symbol record exceeds current allocation then expand symbol
+ // table and/or symbol string table.
+ ost_offset_p = (ost_ptr - ost);
+ ost_offset_e = (ost_end - ost);
+
+ // 3 x uint32_t (12 bytes)
+ if ((ost_ptr + 12) > ost_end)
+ {
+ // We want to allocate the current size of the OST + another block.
+ ost = realloc(ost, ost_offset_e + OST_BLOCK);
+
+ if (ost == NULL)
+ {
+ printf("OST memory reallocation error.\n");
+ return -1;
+ }
+
+ ost_ptr = ost + ost_offset_p;
+ ost_end = (ost + ost_offset_e) + OST_BLOCK;
+ }
+
+ ost_offset_p = (oststr_ptr - oststr);
+ ost_offset_e = (oststr_end - oststr);
+
+ // string length + terminating NULL + uint32_t (terminal long)
+ if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
+ {
+ oststr = realloc(oststr, ost_offset_e + OST_BLOCK);
+
+ if (oststr == NULL)
+ {
+ printf("OSTSTR memory reallocation error.\n");
+ return -1;
+ }
+
+ oststr_ptr = oststr + ost_offset_p;
+ oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
+ }
+ }
+
+ // If this is a debug symbol and the include debug symbol flag (-g) is not
+ // set then do nothing
+ if ((type & 0xF0000000) && !gflag)
+ {
+ // Do nothing
+ return 0;
+ }
+
+ // Get symbol index in OST, if any (-1 if not found)
+ ostresult = OSTLookup(name);
+
+ // If the symbol is in the output symbol table and the bflag is set
+ // (don't remove multiply defined locals) and this is not an
+ // external/global symbol *** OR *** the symbol is not in the output
+ // symbol table then add it.
+ if (((ostresult != -1) && bflag && !(type & 0x01000000))
+ || ((ostresult != -1) && gflag && (type & 0xF0000000))
+ || (ostresult == -1))
+ {
+ if ((type & 0xF0000000) == 0x40000000)
+ PutLong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
+ else
+ PutLong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
+
+ PutLong(ost_ptr + 4, type);
+ PutLong(ost_ptr + 8, value);
+ ost_ptr += 12;
+
+ // If the symbol type is anything but a debug line information
+ // symbol then write the symbol string to the string table
+ if ((type & 0xF0000000) != 0x40000000)
+ {
+ strcpy(oststr_ptr, name); // Put symbol name in string table
+ *(oststr_ptr + slen) = '\0'; // Add null terminating character
+ oststr_ptr += (slen + 1);
+ PutLong(oststr_ptr, 0x00000000); // Null terminating long
+ PutLong(oststr, (oststr_ptr - oststr)); // Update size of string table
+ }
+
+ if (vflag > 1)
+ printf("OSTAdd: (%s), type=$%08X, val=$%08lX\n", name, type, value);
+
+// is ost_index pointing one past?
+// does this return the same regardless of if its ++n or n++?
+// no. it returns the value of ost_index *before* it's incremented.
+ return ++ost_index;
+ }
+
+ return ostresult;
+}
+
+
+//
+// Return the index of a symbol in the output symbol table
+// N.B.: This is a 1-based index! (though there's no real reason for it to be)
+//
+int OSTLookup(char * sym)
+{
+ int i;
+ int stro = 4; // Offset in string table
+
+ for(i=0; i<ost_index; i++)
+ {
+ if (strcmp(oststr + stro, sym) == 0)
+ return i + 1;
+
+ stro += strlen(oststr + stro) + 1;
+ }
+
+ return -1;
+}
+
+
+//
+// Add unresolved externs to the output symbol table
+// N.B.: Only adds unresolved symbols *if* they're not already in the OST
+//
+int DoUnresolved(void)
+{
+ struct HREC * hptr = unresolved;
+
+ // Add to OST while unresolved list is valid
+ while (hptr != NULL)
+ {
+ if (OSTAdd(hptr->h_sym, T_GLBL, 0L) == -1)
+ return 1;
+
+ if (vflag > 1)
+ printf("DoUnresolved(): '%s' (%s:$%08X) in OST\n", hptr->h_sym, hptr->h_ofile->o_name, hptr->h_type);
+
+ struct HREC * htemp = hptr->h_next;
+ free(hptr);
+ hptr = htemp;
+ }
+
+ unresolved = NULL;
+ return 0;
+}
+
+
+//
+// Update object file TEXT and DATA segments based on relocation records. Take
+// in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
+// successful or non-zero (1) if failed.
+//
+int RelocateSegment(struct OFILE * ofile, int flag)
+{
+ char * symtab; // Start of symbol table
+ char * symbols; // Start of symbols
+ char * sptr; // Start of segment data
+ char * rptr; // Start of segment relocation records
+ unsigned symidx; // Offset to symbol
+ unsigned addr; // Relocation address
+ unsigned rflg; // Relocation flags
+ unsigned olddata; // Old segment data at reloc address
+ unsigned newdata = 0; // New segment data at reloc address
+ unsigned pad; // Temporary to calculate phrase padding
+ int i; // Iterator
+ char sym[SYMLEN]; // String for symbol name/hash search
+ int ssidx; // Segment size table index
+ unsigned glblreloc; // Global relocation flag
+ unsigned absreloc; // Absolute relocation flag
+ unsigned relreloc; // Relative relocation flag
+ unsigned wordreloc; // Relocate word only flag
+ unsigned swcond; // Switch statement condition
+ unsigned relocsize; // Relocation record size
+
+ // If there is no TEXT relocation data for the selected object file segment
+ // then update the COF TEXT segment offset allowing for the phrase padding
+ if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
+ {
+ // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
+ return 0;
+ }
+
+ // If there is no DATA relocation data for the selected object file segment
+ // then update the COF DATA and BSS segment offsets allowing for the phrase
+ // padding
+ if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
+ {
+ // SCPCD : the T_DATA is the last section of the file, we can now increment the textoffset, dataoffset and bssoffset
+
+ // TEXT segment size plus padding
+ pad = ((ofile->o_header.tsize + secalign) & ~secalign);
+ textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
+
+ if (vflag > 1)
+ printf("RelocateSegment(%s, TEXT) : No relocation data\n", ofile->o_name);
+
+ // DATA segment size plus padding
+ pad = ((ofile->o_header.dsize + secalign) & ~secalign);
+ dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
+
+ // BSS segment size plus padding
+ pad = ((ofile->o_header.bsize + secalign) & ~secalign);
+ bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
+
+ if (vflag > 1)
+ printf("RelocateSegment(%s, DATA) : No relocation data\n", ofile->o_name);
+
+ return 0;
+ }
+
+ if (vflag > 1)
+ printf("RelocateSegment(%s, %s) : Processing Relocation Data\n",
+ ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
+
+ // Obtain pointer to start of symbol table
+ symtab = (ofile->o_image + 32 + ofile->o_header.tsize
+ + ofile->o_header.dsize
+ + ofile->o_header.absrel.reloc.tsize
+ + ofile->o_header.absrel.reloc.dsize);
+
+ // Obtain pointer to start of symbols
+ symbols = symtab + ofile->o_header.ssize;
+
+ // Obtain pointer to start of TEXT segment
+ sptr = ofile->o_image + 32;
+
+ // Obtain pointer to start of TEXT relocation records
+ rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
+
+ relocsize = ofile->o_header.absrel.reloc.tsize;
+
+ if (vflag)
+ printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
+
+ // Update pointers if DATA relocation records are being processed
+ if (flag == T_DATA)
+ {
+ sptr += ofile->o_header.tsize; // Start of DATA segment
+ rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
+ relocsize = ofile->o_header.absrel.reloc.dsize;
+ }
+
+ // Process each relocation record for the TEXT segment
+ for(i=0; i<(int)relocsize; i+=8)
+ {
+ // Obtain both the relocation address and the relocation flags from the
+ // object file image
+ addr = GetLong(rptr);
+ rflg = GetLong(rptr + 4);
+ glblreloc = (rflg & 0x00000010 ? 1 : 0);// Set global relocation flag
+ absreloc = (rflg & 0x00000040 ? 1 : 0); // Set absolute relocation flag
+ relreloc = (rflg & 0x000000A0 ? 1 : 0); // Set relative relocation flag
+ wordreloc = (rflg & 0x00000002 ? 1 : 0); // Set word relocation flag
+
+ // Additional processing required for global relocations
+ if (glblreloc)
+ {
+ // Obtain the string table index for the relocation symbol, look
+ // for it in the globals hash table to obtain information on that
+ // symbol. For the hash calculation to work correctly it must be
+ // placed in a 'clean' string before looking it up.
+ symidx = GetLong(symtab + ((rflg >> 8) * 12));
+ memset(sym, 0, SYMLEN);
+ strcpy(sym, symbols + symidx);
+ olddata = newdata = 0; // Initialise old and new segment data
+ ssidx = OSTLookup(sym);
+ newdata = GetLong(ost + ((ssidx - 1) * 12) + 8);
+ }
+
+ // Obtain the existing long word (or word) segment data and flip words
+ // if the relocation flags indicate it relates to a RISC MOVEI
+ // instruction
+ olddata = (wordreloc ? GetWord(sptr + addr) : GetLong(sptr + addr));
+
+ if (rflg & 0x01)
+ olddata = _SWAPWORD(olddata);
+
+ // Process record dependant on segment it relates to; TEXT, DATA or
+ // BSS. Construct a new relocated segment long word based on the
+ // required segment base address, the segment data offset in the
+ // resulting COF file and the offsets from the incoming object file.
+ swcond = (rflg & 0xFFFFFF00);
+
+ if (!glblreloc)
+ {
+ switch (swcond)
+ {
+ case 0x00000200: // Absolute Value
+ break;
+ case 0x00000400: // TEXT segment relocation record
+ // SCPCD : the symbol point to a text segment, we should use the textoffset
+ newdata = tbase + textoffset + olddata;
+
+ break;
+ case 0x00000600: // DATA segment relocation record
+ newdata = dbase + dataoffset
+ + (olddata - ofile->o_header.tsize);
+
+ break;
+ case 0x00000800: // BSS segment relocation record
+ newdata = bbase + bssoffset
+ + (olddata - (ofile->o_header.tsize
+ + ofile->o_header.dsize));
+
+ break;
+ }
+ }
+ else
+ {
+ if (!relreloc)
+ newdata += olddata;
+ }
+
+ // Set absolute (long) or relative (word) address of symbol
+ if (absreloc)
+ {
+ // Flip the new long word segment data if the relocation record
+ // indicated a RISC MOVEI instruction and place the resulting data
+ // back in the COF segment
+ if (rflg & 0x01)
+ newdata = _SWAPWORD(newdata);
+
+ if (wordreloc)
+ PutWord(sptr + addr, newdata);
+ else
+ PutLong(sptr + addr, newdata);
+ }
+ else if (relreloc)
+ {
+ PutWord(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
+ }
+
+ // Shamus: Let's output some info to aid in debugging this crap
+ if (vflag > 1)
+ {
+ char ssiString[128];
+ ssiString[0] = 0;
+
+ if (glblreloc)
+ sprintf(ssiString, " [ssi:%i]", ssidx);
+
+ printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, GetLong(sptr + addr), ssiString);
+ }
+
+ rptr += 8; // Point to the next relocation record
+ }
+
+ // Update the COF segment offset allowing for the phrase padding.
+ // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
+ if (flag == T_DATA)
+ {
+ // TEXT segment plus padding
+ pad = ((ofile->o_header.tsize + secalign) & ~secalign);
+ textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
+
+ // DATA segment plus padding
+ pad = ((ofile->o_header.dsize + secalign) & ~secalign);
+ dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
+
+ // BSS segment plus padding
+ pad = ((ofile->o_header.bsize + secalign) & ~secalign);
+ bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
}
- return temp;
+ // Return value, should always be zero
+ return 0;
}
//
-// --- Put a Long Word into Memory --------------------------------------------
+// Add a path character to the end of string 's' if it doesn't already end with
+// one. The last occurrance of '/' or '\' in the string is assumed to be the
+// path character.
+//
+// This is fucking shit. We know what the path delimiter is, its FUCKING
+// DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
+// ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
//
-void putlong(char * dest, unsigned val)
+void AppendPathDelimiter(char * s)
{
- *dest++ = (char)(val >> 24);
- *dest++ = (char)(val >> 16);
- *dest++ = (char)(val >> 8);
- *dest = (char)val;
+#if 0
+ // And hope to God that there's enough space in the buffer...
+ char pathchar = 0;
+
+ while (*s)
+ {
+ if (*s == '/' || *s == '\\')
+ pathchar = *s;
+
+ s++;
+ }
+
+ s--;
+
+ if (*s == pathchar)
+ return;
+
+ *++s = pathchar;
+ *++s = 0;
+#else
+ int length = strlen(s);
+
+ if (s[length - 1] != PATH_DELIMITER)
+ {
+ s[length] = PATH_DELIMITER;
+ s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
+ }
+#endif
}
//
-// --- Get a Word from Memory -------------------------------------------------
+// Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
+// handle of the file successfully opened. p_name is updated to point to a
+// malloc()'ed string which is the name which actually got opened. p_name will
+// return unchanged if the file can't be found.
//
-int getword(char * src)
+int TryOpenFile(char ** p_name)
{
- unsigned temp;
- char * out;
+ char * name = *p_name;
+
+ // Note that libdir will be an empty string if there is none specified
+ char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
+
+ if (tmpbuf == NULL)
+ {
+ printf("TryOpenFile() : out of memory\n");
+ return -1;
+ }
+
+ strcpy(tmpbuf, name);
+ int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
+ // Try to open file as passed first
+ int fd = open(tmpbuf, _OPEN_FLAGS);
+
+ if (fd >= 0)
+ goto ok;
+
+ if (!hasdot)
+ {
+ // Try to open file with '.o' added
+ strcat(tmpbuf, ".o");
+ fd = open(tmpbuf, _OPEN_FLAGS);
+
+ if (fd >= 0)
+ goto ok;
+ }
+
+ // Try the libdir only if the name isn't already anchored
+ // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
+// if (*name != '/' && *name != '\\' && !strchr(name, ':'))
+ if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
+ {
+ strcpy(tmpbuf, libdir);
+ // Add a trailing path char if there isn't one already
+ AppendPathDelimiter(tmpbuf);
+ strcat(tmpbuf, name);
+
+ if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
+ goto ok;
+
+ if (!hasdot)
+ {
+ strcat(tmpbuf, ".o");
+
+ if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
+ goto ok;
+ }
+ }
+
+ // Couldn't open file at all
+ return -1;
+
+// There are worse things... :-P
+ok:
+ tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
+
+ if (tmpbuf == NULL)
+ {
+ printf("TryOpenFile() : out of memory\n");
+ return -1;
+ }
+
+ *p_name = tmpbuf;
+ return fd;
+}
+
+
+//
+// What it says on the tin
+//
+void WriteARName(struct OFILE * p)
+{
+ int flag = *(p->o_arname);
+ printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
+}
+
+
+//
+// Collect file names and handles in a buffer so there is less disk activity.
+// Call DoFile with flag FALSE for normal object files and archives.
+// Call it with flag TRUE and a symbol name for include files (-i).
+//
+int DoFile(char * fname, int incFlag, char * sym)
+{
+ // Verbose information
+ if (vflag)
+ {
+ printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
+
+ if (incFlag)
+ printf(" symbol %s", sym);
+
+ printf("\n");
+ }
+
+ // Reached maximum file handles
+ if (hd == NHANDLES)
+ {
+ if (ProcessFiles())
+ return 1;
+ }
+
+ // Attempt to open input file
+ int fd = TryOpenFile(&fname);
+
+ if (fd < 0)
+ {
+ printf("Cannot find input module %s\n", fname);
+ return 1;
+ }
+
+ // The file is open; save its info in the handle and name arrays
+ handle[hd] = fd;
+ name[hd] = fname; // This is the name from TryOpenFile()
+ hflag[hd] = incFlag;
+
+ // Include files
+ if (incFlag)
+ {
+ int temp = strlen(sym); // Get symbol length
+
+ // 100 chars is max length of a symbol
+ if (temp > 99)
+ {
+ sym[99] = '\0';
+ temp = 99;
+ }
+
+ // Malloc enough space for two symbols, then build the second one.
+ // Second one may be one character longer than first
+ if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
+ || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
+ {
+ printf("DoFile() : out of memory for include-file symbols\n");
+ return 1;
+ }
+
+ strcpy(hsym1[hd], sym);
+ strcpy(hsym2[hd], sym);
+
+ if (temp == 99)
+ {
+ if (sym[99] == 'x')
+ {
+ printf("Last char of %s is already 'x': choose another name\n", sym);
+ return 1;
+ }
+
+ hsym2[hd][99] = 'x';
+ }
+ else
+ {
+ hsym2[hd][temp] = 'x';
+ hsym2[hd][temp+1] = '\0';
+ }
+ }
+
+ // Increment next handle index
+ hd++;
+ // No problems
+ return 0;
+}
+
+
+//
+// Pad TEXT or DATA segment to the requested boundary
+//
+int PadSegment(FILE * fd, long segsize, int value)
+{
+ int i;
+ char padarray[32];
+ char * padptr;
+
+ // Determine the number of padding bytes that are needed
+ long padsize = (segsize + secalign) & ~secalign;
+ padsize = padsize - segsize;
+
+ // Fill pad array if padding is required
+ if (padsize)
+ {
+ padptr = padarray;
+
+ for(i=0; i<16; i++)
+ {
+ PutWord(padptr, value);
+ padptr += 2;
+ }
+
+ symoffset += padsize;
+
+ // Write padding bytes
+ if (fwrite(padarray, padsize, 1, fd) != 1)
+ return 1;
+ }
+
+ return 0;
+}
+
+
+//
+// Write the output file
+//
+int WriteOutputFile(struct OHEADER * header)
+{
+ unsigned osize; // Object segment size
+ struct OFILE * otemp; // Object file pointer
+ int i, j; // Iterators
+ char himage[0x168]; // Header image (COF = 0xA8)
+ uint32_t tsoff, dsoff, bsoff; // Segment offset values
+ unsigned index, type, value; // Symbol table index, type and value
+ short abstype; // ABS symbol type
+ char symbol[14]; // Symbol record for ABS files
+ int slen; // Symbol string length
+
+ symoffset = 0; // Initialise symbol offset
+
+ // Add correct output extension if none
+ if (strchr(ofile, '.') == NULL)
+ {
+ if (aflag && cflag)
+ strcat(ofile, ".cof"); // COF files (a type of abs)
+ else if (aflag && !cflag)
+ strcat(ofile, ".abs"); // ABS files
+ else
+ strcat(ofile, ".o"); // Object files (partial linking, etc)
+ }
+
+ FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
+
+ if (!fd)
+ {
+ printf("Can't open output file %s\n", ofile);
+ return 1;
+ }
+
+ // Build the output file header
+ // Absolute (COF) header
+ if (cflag)
+ {
+ tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
+
+ // Process each object file segment size to obtain a cumulative segment
+ // size for both the TEXT and DATA segments
+ for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
+ {
+ dsoff += otemp->segSize[TEXT];
+ bsoff += otemp->segSize[TEXT] + otemp->segSize[DATA];
+ }
+
+ // Currently this only builds a COF absolute file. Conditionals and
+ // additional code will need to be added for ABS and partial linking.
+
+ // Build the COF_HDR
+ PutWord(himage + 0, 0x0150 ); // Magic Number (0x0150)
+ PutWord(himage + 2, 0x0003 ); // Sections Number (3)
+ PutLong(himage + 4, 0x00000000 ); // Date (0L)
+ PutLong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
+ PutLong(himage + 12, ost_index); // Number of Symbols
+ PutWord(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
+ PutWord(himage + 18, 0x0003 ); // Executable Flags (3)
+
+ // Build the RUN_HDR
+ PutLong(himage + 20, 0x00000107 ); // Magic/vstamp
+ PutLong(himage + 24, header->tsize ); // TEXT size in bytes
+ PutLong(himage + 28, header->dsize ); // DATA size in bytes
+ PutLong(himage + 32, header->bsize ); // BSS size in bytes
+ PutLong(himage + 36, tbase ); // Start of executable, normally @TEXT
+ PutLong(himage + 40, tbase ); // @TEXT
+ PutLong(himage + 44, dbase ); // @DATA
+
+ // Build the TEXT SEC_HDR
+ PutLong(himage + 48, 0x2E746578 );
+ PutLong(himage + 52, 0x74000000 ); // ".text"
+ PutLong(himage + 56, tbase ); // TEXT START
+ PutLong(himage + 60, tbase ); // TEXT START
+ PutLong(himage + 64, header->tsize ); // TEXT size in bytes
+ PutLong(himage + 68, tsoff ); // Offset to section data in file
+ PutLong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
+ PutLong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
+ PutLong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
+ PutLong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
+
+ // Build the DATA SEC_HDR
+ PutLong(himage + 88, 0x2E646174 );
+ PutLong(himage + 92, 0x61000000 ); // ".data"
+ PutLong(himage + 96, dbase ); // DATA START
+ PutLong(himage + 100, dbase ); // DATA START
+ PutLong(himage + 104, header->dsize ); // DATA size in bytes
+ PutLong(himage + 108, dsoff ); // Offset to section data in file
+ PutLong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
+ PutLong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
+ PutLong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
+ PutLong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
+
+ // Build the BSS SEC_HDR
+ PutLong(himage + 128, 0x2E627373 );
+ PutLong(himage + 132, 0x00000000 ); // ".bss"
+ PutLong(himage + 136, bbase ); // BSS START
+ PutLong(himage + 140, bbase ); // BSS START
+ PutLong(himage + 144, header->bsize ); // BSS size in bytes
+ PutLong(himage + 148, bsoff ); // Offset to section data in file
+ PutLong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
+ PutLong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
+ PutLong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
+ PutLong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
+
+ symoffset = 168; // Update symbol offset
+ }
+ // Absolute (ABS) header
+ else
+ {
+ // Build the ABS header
+ PutWord(himage + 0, 0x601B ); // Magic Number (0x601B)
+ PutLong(himage + 2, header->tsize ); // TEXT segment size
+ PutLong(himage + 6, header->dsize ); // DATA segment size
+ PutLong(himage + 10, header->bsize ); // BSS segment size
+ PutLong(himage + 14, ost_index * 14 ); // Symbol table size (?)
+ PutLong(himage + 18, 0x00000000 ); //
+ PutLong(himage + 22, tbase ); // TEXT base address
+ PutWord(himage + 26, 0xFFFF ); // Flags (?)
+ PutLong(himage + 28, dbase ); // DATA base address
+ PutLong(himage + 32, bbase ); // BSS base address
+
+ symoffset = 36; // Update symbol offset
+ }
+
+ // Write the header, but not if noheaderflag
+ if (!noheaderflag)
+ {
+ // Absolute (ABS) header
+ if (!cflag)
+ {
+ if (fwrite(himage, 36, 1, fd) != 1)
+ goto werror;
+ }
+ // Absolute (COF) header
+ else
+ {
+ if (fwrite(himage, 168, 1, fd) != 1)
+ goto werror;
+ }
+ }
+
+ // Write the TEXT segment of each object file
+ for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
+ {
+ osize = otemp->o_header.tsize;
+
+ // Write only if segment has size
+ if (osize)
+ {
+ if (vflag > 1)
+ printf("Writing TEXT Segment of %s\n", otemp->o_name);
+
+ if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
+ goto werror;
+
+ // Pad to required alignment boundary
+ if (PadSegment(fd, osize, 0x0000))
+ goto werror;
+
+ symoffset += osize;
+ }
+ }
+
+ // Write the DATA segment of each object file
+ for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
+ {
+ osize = otemp->o_header.dsize;
+
+ // Write only if the segment has size
+ if (osize)
+ {
+ if (vflag > 1)
+ printf("Writing DATA Segment of %s\n", otemp->o_name);
+
+ if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
+ goto werror;
+
+ // Pad to required alignment boundary
+ if (PadSegment(fd, osize, 0))
+ goto werror;
+
+ symoffset += osize;
+ }
+ }
+
+//wha? if (!noheaderflag)
+ // This isn't quite right, but it's closer...
+ // (the l and s flags tell the linker to output local & global symbols
+ // in the symbol table, so it seems there's some other thing that's a
+ // default set somewhere. Not 100% sure. Setting -s kills -l, BTW...)
+ if (lflag || sflag)
+ {
+ // Write the symbols table and string table
+ // Absolute (COF) symbol/string table
+ if (cflag)
+ {
+ if (header->ssize)
+ {
+ if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1)
+ goto werror;
+
+ if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1)
+ goto werror;
+ }
+ }
+ // Absolute (ABS) symbol/string table
+ else
+ {
+ // The symbol and string table have been created as part of the
+ // DoSymbols() function and the output symbol and string tables are
+ // in COF format. For an ABS file we need to process through this
+ // to create the 14 character long combined symbol and string
+ // table. Format of symbol table in ABS: AAAAAAAATTVVVV, where
+ // (A)=STRING, (T)=TYPE & (V)=VALUE
+
+ for(i=0; i<ost_index; i++)
+ {
+ memset(symbol, 0, 14); // Initialise symbol record
+ abstype = 0; // Initialise ABS symbol type
+ slen = 0; // Initialise symbol string length
+ index = GetLong(ost + (i * 12)); // Get symbol index
+ type = GetLong((ost + (i * 12)) + 4); // Get symbol type
+
+ // Skip debug symbols
+ if (type & 0xF0000000)
+ continue;
+
+ // Get symbol value
+ value = GetLong((ost + (i * 12)) + 8);
+ slen = strlen(oststr + index);
+
+ // Get symbol string (maximum 8 chars)
+ if (slen > 8)
+ {
+ for(j=0; j<8; j++)
+ *(symbol + j) = *(oststr + index + j);
+ }
+ else
+ {
+ for(j=0; j<slen; j++)
+ *(symbol + j) = *(oststr + index + j);
+ }
+
+ // Modify to ABS symbol type
+ switch (type)
+ {
+ case 0x02000000: abstype = (short)ABST_DEFINED; break;
+ case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
+ case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
+ case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
+ case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
+ case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
+ case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
+ default:
+ printf("warning (WriteOutputFile): ABS, cannot determine symbol type ($%08X) [%s]\n", type, symbol);
+// type = 0;
+ break;
+ }
+
+ PutWord(symbol + 8, abstype); // Write back new ABS type
+ PutLong(symbol + 10, value); // Write back value
+
+ // Write symbol record
+ if (fwrite(symbol, 14, 1, fd) != 1)
+ goto werror;
+ }
+ }
+ }
+
+ if (fclose(fd))
+ {
+ printf("Close error on output file %s\n", ofile);
+ return 1;
+ }
+
+ return 0;
+
+werror:
+ printf("Write error on output file %s\n", ofile);
+ fclose(fd); // Try to close output file anyway
+ return 1;
+}
+
+
+//
+// Display the symbol load map
+//
+int ShowSymbolLoadMap(struct OHEADER * header)
+{
+ unsigned i, o; // Inner and outer loop iterators
+ unsigned c; // Column number
+ unsigned index; // Symbol string index
+ unsigned type; // Symbol type
+ unsigned value; // Symbol value
+ char * symbol; // Symbol string value
+
+ if (ost_index == 0)
+ return 0; // Return if no symbols to map
+
+ printf("LOAD MAP\n\n");
+
+ // Outer loop for each of the symbol areas to map out;
+ // 0 = NON-RELOCATABLE SYMBOLS
+ // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
+ // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
+ // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
+ for(o=0; o<4; o++)
+ {
+ // Display the correct map header for the symbols being processed
+ switch (o)
+ {
+ case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
+ case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
+ case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
+ case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
+ }
+
+ c = 0; // Initialise column number
+
+ // Inner loop to process each record in the symbol table
+ for(i=0; i<(unsigned)ost_index; i++)
+ {
+ index = GetLong(ost + (i * 12)); // Get symbol string index
+ type = GetLong(ost + (i * 12) + 4); // Get symbol type
+ value = GetLong(ost + (i * 12) + 8); // Get symbol value
+ symbol = oststr + index; // Get symbol string
+
+ // Display only three columns
+ if (c == 3)
+ {
+ printf("\n");
+ c = 0;
+ }
+
+ // If local symbols not included and the type is local then go to
+ // next symbol record
+ if (!lflag & !(type & 0x01000000))
+ continue;
+
+ // Output each symbol to the display, dependant on type
+ switch (o)
+ {
+ case 0:
+ // Non-relocatable symbols
+ if (type == 0x02000000 || type == 0x03000000)
+ {
+ printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
+ c++;
+ }
+
+ break;
+ case 1:
+ // TEXT segment relocatable symbols
+ if (type == 0x04000000 || type == 0x05000000)
+ {
+ printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
+ c++;
+ }
+
+ break;
+ case 2:
+ // DATA segment relocatble symbols
+ if (type == 0x06000000 || type == 0x07000000)
+ {
+ printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
+ c++;
+ }
+
+ break;
+ case 3:
+ // BSS segment relocatable symbols
+ if (type == 0x08000000 || type == 0x09000000)
+ {
+ printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
+ c++;
+ }
+
+ break;
+ }
+ }
+
+ printf("\n\n");
+ }
+
+ return 0;
+}
+
+
+//
+// Stuff the (long) value of a string into the value argument. RETURNS TRUE if
+// the string doesn't parse. Parses only as a hexadecimal string.
+//
+int GetHexValue(char * string, int * value)
+{
+ *value = 0;
+
+ while (isxdigit(*string))
+ {
+ if (isdigit(*string))
+ {
+ *value = (*value << 4) + (*string++ - '0');
+ }
+ else
+ {
+ if (isupper(*string))
+ *string = tolower(*string);
+
+ *value = (*value << 4) + ((*string++ - 'a') + 10);
+ }
+ }
+
+ if (*string != '\0')
+ {
+ printf("Invalid hexadecimal value");
+ return 1;
+ }
+
+ return 0;
+}
+
+
+//
+// Create one big .o file from the images already in memory, returning a
+// pointer to an OHEADER. Note that the oheader is just the header for the
+// output (plus some other information). The text, data, and fixups are all
+// still in the ofile images hanging off the global 'olist'.
+//
+struct OHEADER * MakeOutputObject()
+{
+ unsigned tptr, dptr, bptr; // Bases in runtime model
+ int ret = 0; // Return value
+ struct OHEADER * header; // Output header pointer
+
+ // Initialize cumulative segment sizes
+ textsize = datasize = bsssize = 0;
+
+ // For each object file, accumulate the sizes of the segments but remove
+ // those object files which are unused
+ struct OFILE * oprev = NULL; // Init previous obj file list ptr
+ struct OFILE * otemp = olist; // Set temp pointer to object file list
+
+ while (otemp != NULL)
+ {
+ // If the object is unused, discard it...
+ if ((otemp->o_flags & O_USED) == 0)
+ {
+ if (wflag)
+ {
+ printf("Unused object file ");
+ WriteARName(otemp);
+ printf(" discarded.\n");
+ }
+
+ // Drop the entry from the linked list
+ if (oprev == NULL)
+ olist = otemp->o_next;
+ else
+ oprev->o_next = otemp->o_next;
+
+ // Free the object entry if it's not an archive file
+ if (!otemp->isArchiveFile)
+ free(otemp->o_image);
+ }
+ else
+ {
+ // Save accumulated addresses in the object
+ otemp->segBase[TEXT] = textsize;
+ otemp->segBase[DATA] = datasize;
+ otemp->segBase[BSS] = bsssize;
+
+ // Increment total of segment sizes ensuring requested alignment
+ textsize += (otemp->o_header.tsize + secalign) & ~secalign;
+ datasize += (otemp->o_header.dsize + secalign) & ~secalign;
+ bsssize += (otemp->o_header.bsize + secalign) & ~secalign;
+ oprev = otemp;
+ }
+
+ // Go to next object file list pointer
+ otemp = otemp->o_next;
+ }
+
+ // Update base addresses and inject the symbols _TEXT_E, _DATA_E and _BSS_E
+ // into the OST
+ tbase = tval;
+
+ if (!dval)
+ {
+ // DATA follows TEXT
+ dbase = tval + textsize;
+
+ if (!bval)
+ // BSS follows DATA
+ bbase = tval + textsize + datasize;
+ else
+ // BSS is independent of DATA
+ bbase = bval;
+ }
+ else
+ {
+ // DATA is independent of TEXT
+ dbase = dval;
+
+ if (!bval)
+ // BSS follows DATA
+ bbase = dval + datasize;
+ else
+ // BSS is independent of DATA
+ bbase = bval;
+ }
+
+ // Inject segment end labels, for C compilers that expect this shite
+ OSTAdd("_TEXT_E", 0x05000000, tbase + textsize);
+ OSTAdd("_DATA_E", 0x07000000, dbase + datasize);
+ OSTAdd("_BSS_E", 0x09000000, bbase + bsssize);
+
+ // Place each unresolved symbol in the output symbol table
+ // N.B.: It only gets here to do this if user passes in -u flag
+ // [Only used here, once]
+ if (DoUnresolved())
+ return NULL;
+
+ // Initialise base addresses
+ tptr = dptr = bptr = 0;
+
+ // For each file, relocate its symbols and add them to the output symbol
+ // table
+ otemp = olist;
+ oprev = NULL;
+
+ while (otemp != NULL)
+ {
+ otemp->o_tbase = tptr;
+ otemp->o_dbase = dptr;
+ otemp->o_bbase = bptr;
+ tptr += (otemp->o_header.tsize + secalign) & ~secalign;
+ dptr += (otemp->o_header.dsize + secalign) & ~secalign;
+ bptr += (otemp->o_header.bsize + secalign) & ~secalign;
+
+ // For each symbol, (conditionally) add it to the ost
+ // For ARCHIVE markers, this adds the symbol for the file & returns
+ // (Shamus: N.B. it does no such thing ATM)
+ // [Only used here, once]
+ if (DoSymbols(otemp))
+ return NULL;
+
+ oprev = otemp;
+ otemp = otemp->o_next;
+ }
+
+ // Places all the externs, globals etc into the output symbol table
+ if (DoCommon() == -1)
+ return NULL;
+
+ // Create a new output file header
+ header = new_oheader();
+
+ if (header == NULL)
+ {
+ printf("MakeOutputObject: out of memory!\n");
+ return NULL;
+ }
+
+ // Fill in the output header. Does not match the actual output but values
+ // used as reference
+ header->magic = 0x0150; // COF magic number
+ header->tsize = textsize; // TEXT segment size
+ header->dsize = datasize; // DATA segment size
+ header->bsize = bsssize; // BSS segment size
+ header->ssize = (ost_ptr - ost); // Symbol table size
+ header->ostbase = ost; // Output symbol table base address
+
+ // For each object file, relocate its TEXT and DATA segments. OR the result
+ // into ret so all files get moved (and errors reported) before returning
+ // with the error condition
+ for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
+ {
+ ret |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
+ ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
+ }
+
+ // Done with global symbol hash tables
+ FreeHashes();
+
+ return (ret ? (struct OHEADER *)NULL : header);
+}
+
+
+//
+// Add symbol to hash list
+//
+int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
+ long value, int type)
+{
+ struct HREC * htemp = new_hrec();
+
+ if (htemp == NULL)
+ {
+ printf("Out of memory\n");
+ return 1;
+ }
+
+ // Shamus: Moar testing...
+ if (vflag > 1)
+ {
+ printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
+ }
+
+ // Populate hash record
+ memset(htemp->h_sym, 0, SYMLEN);
+ strcpy(htemp->h_sym, sym);
+ htemp->h_ofile = ofile;
+ htemp->h_value = value;
+ htemp->h_type = type;
+
+ // Add new hash to the front of the list (hence the ** for hptr)
+ htemp->h_next = *hptr;
+ *hptr = htemp;
+
+ return 0;
+}
+
+
+//
+// Add symbol to the unresolved symbols hash table (really, it's a linked list)
+//
+int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
+{
+ if (vflag > 1)
+ printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
+
+ return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
+}
+
+
+//
+// Remove the HREC from the unresolved symbol list, and pass back a pointer
+// to the spot where the HREC was.
+//
+struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
+{
+ struct HREC * ptr = unresolved;
+ struct HREC * previous = NULL;
+
+ while ((ptr != hrec) && (ptr != NULL))
+ {
+ previous = ptr;
+ ptr = ptr->h_next;
+ }
+
+ // Not found...!
+ if (ptr == NULL)
+ return NULL;
+
+ struct HREC * next = ptr->h_next;
+
+ // Remove the head if nothing previous, otherwise, remove what we found
+ if (previous == NULL)
+ unresolved = next;
+ else
+ previous->h_next = next;
+
+ free(ptr);
+ return next;
+}
+
+
+//
+// Add symbol to the unresolved symbols hash table
+//
+int AddARSymbol(char * sym, struct OFILE * ofile)
+{
+ if (vflag > 1)
+ printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
+
+ return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
+}
+
+
+//
+// Generate hash value from the 1st 15 characters of the symbol modulo the
+// number of buckets in the hash.
+//
+int GetHash(char * s)
+{
+ // For this to be consistent, the symbol MUST be zeroed out beforehand!
+ // N.B.: strncpy() pads zeroes for us, if the symbol is less than 15 chars.
+ char c[15];
+ strncpy(c, s, 15);
+
+ int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
+ + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
+ return i;
+}
+
+
+//
+// Lookup a symbol in the hash table.
+// Returns either a pointer to the HREC or NULL if not found.
+//
+struct HREC * LookupHREC(char * symbol)
+{
+ struct HREC * hptr = htable[GetHash(symbol)];
+
+ while (hptr != NULL)
+ {
+//This is utter failure...
+// if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
+ // Return hash record pointer if found
+ if (strcmp(symbol, hptr->h_sym) == 0)
+ return hptr;
+
+ hptr = hptr->h_next;
+ }
+
+ return NULL;
+}
+
+
+//
+// Lookup a symbol in the AR symbol table.
+// Returns either a pointer to the HREC or NULL if not found.
+//
+struct HREC * LookupARHREC(char * symbol)
+{
+ struct HREC * hptr = arSymbol;
+
+ while (hptr != NULL)
+ {
+ // Return hash record pointer if found
+ if (strcmp(symbol, hptr->h_sym) == 0)
+ return hptr;
+
+ hptr = hptr->h_next;
+ }
+
+ return NULL;
+}
+
+
+//
+// Add the imported symbols from this file to unresolved, and the global and
+// common (???) symbols to the exported hash table.
+//
+// Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
+// (type == (T_GLOBAL | T_EXTERN)). [??? O_o]
+// [N.B.: Whoever wrote the above didn't know what the fuck they were talking
+// about. Commons (globals) are exactly what they are calling 'old
+// style'. Also note, that there is no "T_GLOBAL" or "T_EXTERN" symbols
+// defined anywhere in the code.]
+//
+int AddSymbols(struct OFILE * Ofile)
+{
+ struct HREC * hptr; // Hash record pointer
+
+ if (vflag > 1)
+ {
+ printf("AddSymbols: for file %s\n", Ofile->o_name);
+ printf(" t_bbase = $%X\n", Ofile->o_tbase);
+ printf(" d_bbase = $%X\n", Ofile->o_dbase);
+ printf(" o_bbase = $%X\n", Ofile->o_bbase);
+ printf(" tsize = $%X\n", Ofile->o_header.tsize);
+ printf(" dsize = $%X\n", Ofile->o_header.dsize);
+ printf(" bsize = $%X\n", Ofile->o_header.bsize);
+ printf(" reloc.tsize = $%X\n", Ofile->o_header.absrel.reloc.tsize);
+ printf(" reloc.dsize = $%X\n", Ofile->o_header.absrel.reloc.dsize);
+ }
+
+ // Get base pointer, start of sym fixups
+ char * ptr = Ofile->o_image + 32
+ + Ofile->o_header.tsize
+ + Ofile->o_header.dsize
+ + Ofile->o_header.absrel.reloc.tsize
+ + Ofile->o_header.absrel.reloc.dsize;
+ char * sfix = ptr; // Set symbol fixup pointer
+ char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
+ long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
+
+ while (nsymbols)
+ {
+ long index = GetLong(sfix); // Get symbol string index
+ long type = GetLong(sfix + 4); // Get symbol type
+ long value = GetLong(sfix + 8); // Get symbol value
+
+ if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
+ {
+ if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
+ if (AddARSymbol(sstr + index, Ofile))
+ return 1;
+ }
+ else if (type == T_GLBL)
+ {
+ // Global symbol that may or may not be in the current unit
+ hptr = LookupHREC(sstr + index);
+
+ if (hptr != NULL)
+ hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
+ // Otherwise, *maybe* add to unresolved list
+ else
+ {
+ // Check to see if this is a common symbol; if so, add it to
+ // the hash list...
+ if (value != 0)
+ {
+ // Actually, we need to convert this to a BSS symbol,
+ // increase the size of the BSS segment for this object, &
+ // add it to the hash list
+ uint32_t bssLocation = Ofile->o_header.tsize + Ofile->o_header.dsize + Ofile->o_header.bsize;
+ Ofile->o_header.bsize += value;
+ Ofile->segSize[BSS] += value;
+ type |= T_BSS;
+ value = bssLocation;
+ PutLong(sfix + 4, type);
+ PutLong(sfix + 8, value);
+
+ if (vflag > 1)
+ printf("AddSymbols: Resetting common label to BSS label\n");
+
+ if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
+ sstr + index, Ofile, value, type))
+ return 1; // Error if addition failed
+ }
+ // Make sure it's not a built-in external...
+ else if ((strcmp(sstr + index, "_TEXT_E") != 0)
+ && (strcmp(sstr + index, "_DATA_E") != 0)
+ && (strcmp(sstr + index, "_BSS_E") != 0))
+ {
+ if (AddUnresolvedSymbol(sstr + index, Ofile))
+ return 1; // Error if addition failed
+ }
+ }
+ }
+ else if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
+ {
+ hptr = LookupHREC(sstr + index);
+
+ // Symbol isn't in the table, so try to add it:
+ if (hptr == NULL)
+ {
+ if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
+ sstr + index, Ofile, value, type))
+ return 1;
+ }
+ else
+ {
+ // Symbol already exists, decide what to do about it
+ // [N.B.: This isn't a check for a common symbol...
+ // BEWARE OF BAD INTERPRETATIONS!!]
+ if (iscommon(hptr->h_type))
+ {
+ // Mismatch: common came first; warn and keep the global
+ if (wflag)
+ {
+ printf("Warning: %s: global from ", sstr + index);
+ WriteARName(Ofile);
+ printf(" used, common from ");
+ WriteARName(hptr->h_ofile);
+ printf(" discarded.\n");
+ }
+
+ hptr->h_ofile = Ofile;
+ hptr->h_type = type;
+ hptr->h_value = value;
+ }
+ else
+ {
+ // Global exported by another ofile; warn and make this one
+ // extern
+ if (wflag)
+ {
+ printf("Duplicate symbol %s: ", sstr + index);
+ WriteARName(hptr->h_ofile);
+ printf(" used, ");
+ WriteARName(Ofile);
+ printf(" discarded\n");
+ }
+
+ // Set the global in this unit to pure external
+ // (is this a good idea? what if the other one is a ref to
+ // this one???)
+ PutLong(sfix + 4, T_GLBL);
+ }
+ }
+ }
+
+ sfix += 12; // Increment symbol fixup pointer
+ nsymbols--; // Decrement num of symbols to process
+ }
+
+ // Success loading symbols
+ return 0;
+}
+
+
+//
+// Process object file for symbols
+//
+int DoItem(struct OFILE * obj)
+{
+ // Allocate memory for object record ptr
+ struct OFILE * Ofile = new_ofile();
+
+ if (Ofile == NULL)
+ {
+ printf("Out of memory while processing %s\n", obj->o_name);
+ return 1;
+ }
+
+ // Starting after all pathnames, etc., copy .o file name to Ofile
+ char * temp = PathTail(obj->o_name);
+
+ // Check filename length
+ if (strlen(temp) > FNLEN - 1)
+ {
+ printf("File name too long: %s\n", temp);
+ return 1;
+ }
+
+ // Check archive name length
+ if (strlen(obj->o_arname) > (FNLEN - 1))
+ {
+ printf("Archive name too long: %s\n", obj->o_arname);
+ return 1;
+ }
+
+ strcpy(Ofile->o_name, temp); // Store filename
+ strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
+
+ // Initialise object record information
+ Ofile->o_next = NULL;
+ Ofile->o_tbase = 0;
+ Ofile->o_dbase = 0;
+ Ofile->o_bbase = 0;
+ Ofile->o_flags = obj->o_flags;
+ Ofile->o_image = obj->o_image;
+ Ofile->isArchiveFile = obj->isArchiveFile;
+ Ofile->segSize[TEXT] = obj->segSize[TEXT];
+ Ofile->segSize[DATA] = obj->segSize[DATA];
+ Ofile->segSize[BSS] = obj->segSize[BSS];
+ char * ptr = obj->o_image;
+
+ Ofile->o_header.magic = GetLong(ptr);
+ Ofile->o_header.tsize = GetLong(ptr + 4);
+ Ofile->o_header.dsize = GetLong(ptr + 8);
+ Ofile->o_header.bsize = GetLong(ptr + 12);
+ Ofile->o_header.ssize = GetLong(ptr + 16);
+ Ofile->o_header.absrel.reloc.tsize = GetLong(ptr + 24);
+ Ofile->o_header.absrel.reloc.dsize = GetLong(ptr + 28);
+
+ // Round BSS off to alignment boundary (??? isn't this already done ???)
+ Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
+
+ if ((Ofile->o_header.dsize & 7) && wflag)
+ {
+ printf("Warning: data segment size of ");
+ WriteARName(Ofile);
+ printf(" is not a phrase multiple\n");
+ }
+
+ // Check for odd segment sizes
+ if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
+ || (Ofile->o_header.bsize & 1))
+ {
+ printf("Error: odd-sized segment in ");
+ WriteARName(Ofile);
+ printf("; link aborted.\n");
+ return 1;
+ }
+
+ if (AddSymbols(Ofile))
+ return 1;
+
+ // Add this file to the olist
+ if (olist == NULL)
+ olist = Ofile;
+ else
+ olast->o_next = Ofile;
+
+ olast = Ofile;
+ return 0;
+}
+
+
+//
+// Handle items in processing list.
+//
+// After loading all objects, archives & include files, we now go and process
+// each item on the processing list (plist). Once this is done, we go through
+// any unresolved symbols left and see if they have shown up.
+//
+int ProcessLists(void)
+{
+ // Process object file list first (adds symbols from each unit & creates
+ // the olist)
+ while (plist != NULL)
+ {
+ if (DoItem(plist))
+ return 1;
+
+ struct OFILE * ptemp = plist;
+ plist = plist->o_next;
+ free(ptemp);
+ }
+
+ struct HREC * uptr;
+
+ // Process the unresolved symbols list. This may involve pulling in symbols
+ // from any included .a units. Such units are lazy linked by default; we
+ // generally don't want everything they provide, just what's referenced.
+ for(uptr=unresolved; uptr!=NULL; )
+ {
+ if (vflag > 1)
+ printf("LookupHREC(%s) => ", uptr->h_sym);
+
+ struct HREC * htemp = LookupHREC(uptr->h_sym);
+
+ if (htemp != NULL)
+ {
+ // Found it in the symbol table!
+ if (vflag > 1)
+ printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
+
+ // Mark the .o unit that the symbol is in as seen & remove from the
+ // unresolved list
+ htemp->h_ofile->o_flags |= O_USED;
+ uptr = RemoveUnresolvedSymbol(uptr);
+ }
+ else
+ {
+ if (vflag > 1)
+ printf("NULL\n");
+
+ // Check to see if the unresolved symbol is on the AR symbol list.
+ htemp = LookupARHREC(uptr->h_sym);
+
+ // If the unresolved symbol is in a .o unit that is unused, we can
+ // drop it; same if the unresolved symbol is in the exported AR
+ // symbol list. Otherwise, go to the next unresolved symbol.
+ if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
+ uptr = RemoveUnresolvedSymbol(uptr);
+ else
+ uptr = uptr->h_next;
+
+ // Now that we've possibly deleted the symbol from unresolved list
+ // that was also in the AR list, we add the symbols from this .o
+ // unit to the symbol table, mark the .o unit as used, and restart
+ // scanning the unresolved list as there is a good possibility that
+ // the symbols in the unit we're adding has unresolved symbols as
+ // well.
+ if (htemp != NULL)
+ {
+ htemp->h_ofile->o_flags |= O_USED;
+ AddSymbols(htemp->h_ofile);
+ uptr = unresolved;
+ }
+ }
+ }
+
+ // Show files used if the user requests it.
+ if (vflag > 1)
+ {
+ printf("Files used:\n");
+ struct OFILE * filePtr = olist;
+
+ while (filePtr != NULL)
+ {
+ if (filePtr->o_flags & O_USED)
+ {
+ printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
+ }
+
+ filePtr = filePtr->o_next;
+ }
+ }
+
+ return 0;
+}
+
+
+//
+// Extract filename from path
+//
+char * PathTail(char * name)
+{
+ // Find last occurance of PATH_DELIMETER
+ char * temp = strrchr(name, PATH_DELIMITER);
+
+ // Return what was passed in if path delimiter was not found
+ if (temp == NULL)
+ return name;
+
+ return temp + 1;
+}
+
+
+//
+// Add input file to processing list
+//
+int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile, uint32_t tSize, uint32_t dSize, uint32_t bSize)
+{
+ if (plist == NULL)
+ {
+ // First time object record allocation
+ plist = new_ofile();
+ plast = plist;
+ }
+ else
+ {
+ // Next object record allocation
+ plast->o_next = new_ofile();
+ plast = plast->o_next;
+ }
+
+ if (plast == NULL)
+ {
+ printf("Out of memory.\n"); // Error if memory allocation fails
+ return 1;
+ }
+
+ // Discard paths from filenames...
+ fname = PathTail(fname);
+ arname = PathTail(arname);
+
+ // Check for filename length errors...
+ if (strlen(fname) > (FNLEN - 1))
+ {
+ printf("File name too long: %s (sorry!)\n", fname);
+ return 1;
+ }
+
+ if (strlen(arname) > (FNLEN - 1))
+ {
+ printf("AR file name too long: %s (sorry!)\n", arname);
+ return 1;
+ }
+
+ strcpy(plast->o_name, fname); // Store filename sans path
+ strcpy(plast->o_arname, arname); // Store archive name sans path
+ plast->o_image = ptr; // Store data pointer
+ plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
+ plast->o_next = NULL; // Initialise next record pointer
+ plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
+ plast->segSize[TEXT] = tSize;
+ plast->segSize[DATA] = dSize;
+ plast->segSize[BSS] = bSize;
+
+ return 0; // Return without errors
+}
+
+
+//
+// Process in binary include files and add them to the processing list. This
+// routine takes in the binary file and creates an 'object' file in memory.
+// Sym1/Sym2 point to the start and end of data.
+//
+// Image size for include files is:
+// Header ....... 32 bytes
+// Data ......... dsize
+// Sym fixups ... 2 * 12 bytes
+// Symbol size .. 4 bytes (Value to include symbols and terminating null)
+// Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
+// Terminate .... 4 bytes (0x00000000)
+//
+int LoadInclude(char * fname, int handle, char * sym1, char * sym2, int segment)
+{
+ char * ptr, * sptr;
+ int i;
+ unsigned symtype = 0;
+ uint32_t tSize = 0, dSize = 0, bSize = 0;
+
+ long fsize = FileSize(handle); // Get size of include file
+ long dsize = (fsize + secalign) & ~secalign; // Align size to boundary
+ int sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
+ int sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
+ long size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
+
+ // Use calloc so the header & fixups initialize to zero
+ // Allocate object image memory
+ if ((ptr = calloc(size, 1)) == NULL)
+ {
+ printf("Out of memory while including %s\n", fname);
+ close(handle);
+ return 1;
+ }
+
+ // Read in binary data
+ if (read(handle, ptr + 32, fsize) != fsize)
+ {
+ printf("File read error on %s\n", fname);
+ close(handle);
+ free(ptr);
+ return 1;
+ }
+
+ close(handle);
+
+ // Build this image's dummy header
+ PutLong(ptr, 0x00000107); // Magic number
+
+ if (segment)
+ {
+ PutLong(ptr+4, dsize); // Text size
+ PutLong(ptr+8, 0L); // Data size
+ symtype = 0x05000000;
+ tSize = dsize;
+ }
+ else
+ {
+ PutLong(ptr+4, 0L); // Text size
+ PutLong(ptr+8, dsize); // Data size
+ symtype = 0x07000000;
+ dSize = dsize;
+ }
+
+ PutLong(ptr+12, 0L); // BSS size
+ PutLong(ptr+16, 24); // Symbol table size
+ PutLong(ptr+20, 0L); // Entry point
+ PutLong(ptr+24, 0L); // TEXT relocation size
+ PutLong(ptr+28, 0L); // DATA relocation size
+
+ sptr = ptr + 32 + dsize; // Set sptr to symbol table location
+
+ PutLong(sptr, 4L); // String offset of symbol1
+ PutLong(sptr+4, symtype); // Symbol type
+ PutLong(sptr+8, 0x00000000); // Symbol has no value (START)
+ PutLong(sptr+12, 4L + (sym2len - 1)); // String offset of symbol2
+ PutLong(sptr+16, symtype); // Symbol type
+ PutLong(sptr+20, dsize); // Symbol is data size (END)
+
+ sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
+
+ PutLong(sptr, sym1len + 4L); // Size of symbol table
+
+ sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
+
+ for(i=0; i<(sym1len-1); i++) // Write symbol1 to string table
+ sptr[i] = *sym1++;
+
+ sptr += (sym1len - 1); // Step past symbol string
+ *sptr = '\0'; // Terminate symbol string
+ sptr += 1; // Step past termination
+
+ for(i=0; i<(sym2len-1); i++) // Write symbol2 to string table
+ sptr[i] = *sym2++;
- out = (char *)&temp;
- *out++ = src[1];
- *out++ = src[0];
- *out++ = 0;
- *out = 0;
+ sptr += (sym2len - 1); // Step past symbol string
+ *sptr = '\0'; // Terminate symbol string
+ sptr += 1; // Step past termination
- return temp;
+ PutLong(sptr, 0L); // Terminating long for object file
+
+ return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
}
//
-// --- Put a Word into Memory -------------------------------------------------
+// Takes a file name, gets in its image, puts it on plist. The image may
+// already be in memory: If so, the ptr arg is non-null. If so, the file is
+// already closed. Note that the file is already open (from DoFile()). RETURNS
+// a pointer to the OFILE structure for this file, so you can diddle its flags
+// (DoFile sets O_USED for files on the command line).
//
-void putword(char * dest, int val)
+int LoadObject(char * fname, int fd, char * ptr)
{
- *dest++ = (char)(val >> 8);
- *dest = (char)val;
-}
+ uint32_t tSize = 0, dSize = 0, bSize = 0;
+ if (ptr == NULL)
+ {
+ long size = FileSize(fd);
-//
-// --- Obtain a File's Size ---------------------------------------------------
-//
-long FSIZE(int fd)
-{
- unsigned temp, hold;
+ // Allocate memory for file data
+ ptr = malloc(size);
- temp = lseek(fd, 0L, SEEK_CUR);
- hold = lseek(fd, 0L, SEEK_END);
- lseek(fd, 0L, SEEK_SET);
+ if (ptr == NULL)
+ {
+ printf("Out of memory while processing %s\n", fname);
+ close(fd);
+ return 1;
+ }
- return hold;
-}
+ // Read in file data
+ if (read(fd, ptr, size) != size)
+ {
+ printf("File read error on %s\n", fname);
+ close(fd);
+ free(ptr);
+ return 1;
+ }
+ tSize = (GetLong(ptr + 4) + secalign) & ~secalign;
+ dSize = (GetLong(ptr + 8) + secalign) & ~secalign;
+ bSize = (GetLong(ptr + 12) + secalign) & ~secalign;
+ close(fd);
+ }
-// ----------------------------------------------------------------------------
-// For this object file, add symbols to the output symbol table after
-// relocating them. Returns TRUE if ost_lookup returns an error (-1).
-// ----------------------------------------------------------------------------
-int dosym(struct OFILE * ofile)
-{
- char * symptr; // Symbol pointer
- char * symend; // Symbol end pointer
- int type; // Symbol type
- long value; // Symbol value
- int index; // Symbol index
- int j; // Iterator
- int ssidx; // Segment size table index
- unsigned tsegoffset; // Cumulative TEXT segment offset
- unsigned dsegoffset; // Cumulative DATA segment offset
- unsigned bsegoffset; // Cumulative BSS segment offset
- struct HREC * hptr; // Hash table pointer for globl/extrn
- char sym[SYMLEN]; // String for symbol name/hash search
-
- // Point to first symbol record in the object file
- symptr = (ofile->o_image + 32 +
- ofile->o_header.tsize +
- ofile->o_header.dsize +
- ofile->o_header.absrel.reloc.tsize +
- ofile->o_header.absrel.reloc.dsize);
-
- // Point to end of symbol record in the object file
- symend = symptr + ofile->o_header.ssize;
-
- // Search through object segment size table to accumulated segment sizes to ensure
- // the correct offsets are used in the resulting COF file.
- ssidx = -1; // Initialise segment index
- tsegoffset = dsegoffset = bsegoffset = 0; // Initialise segment offsets
-
- for(j=0; j<(int)obj_index; j++)
- { // Search for object file name
- if (!strcmp(ofile->o_name, obj_fname[j]))
- {
- ssidx = j; // Object file name found
- break;
- }
-
- tsegoffset += obj_segsize[j][0]; // Accumulate segment sizes
- dsegoffset += obj_segsize[j][1];
- bsegoffset += obj_segsize[j][2];
- }
-
- if (ssidx == -1)
- {
- printf("dosym() : Cannot get object file segment size : %s\n", ofile->o_name);
- return(1);
- }
-
- // Process each record in the symbol table
- for(; symptr!=symend ; symptr+=12)
- {
- index = getlong(symptr + 0); // Obtain symbol string index
- type = getlong(symptr + 4); // Obtain symbol type
- value = getlong(symptr + 8); // Obtain symbol value
-
- // Global/External symbols have a pre-processing stage
- if (type & 0x01000000)
- {
- // Obtain the string table index for the relocation symbol, look for it in the globals
- // hash table to obtain information on that symbol. For the hash calculation to work
- // correctly it must be placed in a 'clean' string before looking it up.
- memset(sym, 0, SYMLEN);
- strcpy(sym, symend + index);
- hptr = lookup(sym);
-
- if (hptr == NULL)
- {
- printf("dosym() : Cannot determine symbol : %s\n", sym);
- return 1;
- }
-
- // Search through object segment size table to obtain segment sizes for the object
- // that has the required external/global as a local symbol. As each object is
- // interrogated the segment sizes are accumulated to ensure the correct offsets are
- // used in the resulting COF file. This is effectively 'done again' only as we
- // are working with a different object file.
- ssidx = -1; // Initialise segment index
- tsegoffset = dsegoffset = bsegoffset = 0; // Initialise segment offsets
-
- for(j=0; j<(int)obj_index; j++)
- { // Search for object filename
- if (!strcmp((const char *)hptr->h_ofile, obj_fname[j]))
- {
- ssidx = j; // Symbol object filename
- break;
- }
-
- tsegoffset += obj_segsize[j][0]; // Accumulate segment sizes
- dsegoffset += obj_segsize[j][1];
- bsegoffset += obj_segsize[j][2];
- }
-
- if (ssidx == -1)
- {
- printf("dosym() : Cannot get object file segment size : %s\n",
- ofile->o_name);
- return 1;
- }
-
- type = hptr->h_type; // Update type with global type
-
- if (type == 0x03000000)
- type = 0x02000000; // Reset external flag if absolute
-
- // If the global/external has a value then update that vaule in accordance with the
- // segment sizes of the object file it originates from
- if (hptr->h_value)
- {
- switch (hptr->h_type & 0x0E000000)
- {
- case 0x02000000: // Absolute value
- case 0x04000000: // TEXT segment
- value = hptr->h_value;
- break;
- case 0x06000000: // DATA segment
- value = hptr->h_value - (hptr->h_ofile->o_header.tsize);
- break;
- case 0x08000000: // BSS segment
- value = hptr->h_value -
- (hptr->h_ofile->o_header.tsize + hptr->h_ofile->o_header.dsize);
- break;
- }
- }
- }
-
- // Process and update the value dependant on whether the symbol is a debug symbol or not
- if (type & 0xF0000000)
- { // DEBUG SYMBOL
- // Set the correct debug symbol base address (TEXT segment)
- dbgsymbase = 0;
-
- for(j=0; (unsigned)j<dosymi; j++)
- dbgsymbase += obj_segsize[j][0];
-
- switch (type & 0xFF000000)
- {
- case 0x64000000:
- value = tval + dbgsymbase;
- break;
- case 0x44000000:
- case 0x46000000:
- case 0x48000000:
- value = tval + dbgsymbase + value;
- default:
- break;
- }
-
- putlong(symptr + 8, value);
- }
- else
- { // NON-DEBUG SYMBOL
- // Now make modifications to the symbol value, local or global, based on the segment sizes
- // of the object file currently being processed.
- switch (type & T_SEG)
- {
- case 0x02000000: // Absolute value
- break;
- case T_TEXT: // TEXT segment
- if(type & 0x01000000) value = tbase + tsegoffset + value;
- else value = tbase + tsegoffset + value;
- putlong(symptr + 8, value);
- break;
- case T_DATA: // DATA segment
- if(type & 0x01000000) value = dbase + dsegoffset + value;
- else value = dbase + dsegoffset + (value - ofile->o_header.tsize);
- putlong(symptr + 8, value);
- break;
- case T_BSS: // BSS segment
- if(type & 0x01000000) value = bbase + bsegoffset + value;
- else value = bbase + bsegoffset +
- (value - (ofile->o_header.tsize + ofile->o_header.dsize));
- putlong(symptr + 8, value);
- break;
- default:
- break;
- }
- }
-
- // Add to output symbol table
- if (lflag || !islocal(type))
- {
- if (islocal(type) || isglobal(type))
- {
- if ((index = ost_add(symend + index, type, value)) == -1)
- return(1);
- }
- else
- {
- // Belongs in OST, but don't look it up yet
- index = -1;
- }
- }
- }
-
- dosymi++; // Increment dosym() processsing
- return 0;
+ // Now add this image to the list of pending ofiles (plist)
+ return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
}
//
-// --- Free Up Hash Records ---------------------------------------------------
+// What it says on the tin: check for a .o suffix on the passed in string
//
-void hash_free(void)
+uint8_t HasDotOSuffix(char * s)
{
- int i;
- struct HREC *htemp, *hptr;
-
- for(i = 0; i < NBUCKETS; i++) {
- hptr = htable[i];
- while(hptr) {
- htemp = hptr->h_next;
- free(hptr);
- hptr = htemp;
- }
- }
-}
+ char * temp = strrchr(s, '.');
-//
-// --- Add all Global and External Symbols to the Output Symbol Table ------------------------------
-//
-
-long docommon(void) {
- struct HREC *hptr; // Hash record pointer
- int i; // Iterator
-
- for(i = 0; i < NBUCKETS; i++) {
- for(hptr = htable[i]; hptr != NULL; hptr = hptr->h_next) {
- if(iscommon(hptr->h_type)) {
- if(hptr->h_type == 0x03000000)
- hptr->h_type = 0x02000000; // Absolutes can't be externals
- if(ost_add(hptr->h_sym, hptr->h_type, hptr->h_value) == -1) {
- return(-1);
- }
- }
- }
- }
-
- return(0);
-}
+ if ((temp == NULL) || (strncmp(temp, ".o", 2) != 0))
+ return 0;
-// -------------------------------------------------------------------------------------------------
-// Add a Symbol's Name, Type, and Value to the OST.
-// Return the Index of the Symbol in OST, or -1 for Error.
-// -------------------------------------------------------------------------------------------------
-
-int ost_add(char *name, int type, long value) {
- int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
- int slen = 0; // Symbol string length
- int ostresult; // OST index result
-
- slen = strlen(name);
-
- // If the OST or OST String Table has not been initialised then do so
- if(ost_index == 0) {
- if((ost = malloc(OST_BLOCK)) == NULL) {
- printf("OST memory allocation error (stringtable).\n");
- return(-1);
- }
- ost_ptr = ost; // Set OST start pointer
- ost_end = ost + OST_BLOCK; // Set OST end pointer
- if((oststr = malloc(OST_BLOCK)) == NULL) {
- printf("OST memory allocation error (string).\n");
- return(-1);
- }
- putlong(oststr, 0x00000004); // Just null long for now
- oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
- putlong(oststr_ptr, 0x00000000); // Null terminating long
- oststr_end = oststr + OST_BLOCK;
- } else {
- // If next symbol record exceeds current allocation then expand symbol table.
- ost_offset_p = (ost_ptr - ost);
- ost_offset_e = (ost_end - ost);
- if((ost_ptr + 12) > ost_end) { // 3 x int (12)
- if((ost = realloc(ost, (unsigned)(ost_end + OST_BLOCK))) == NULL) {
- printf("OST memory reallocation error.\n");
- return(-1);
- }
- ost_ptr = ost + ost_offset_p;
- ost_end = (ost + ost_offset_e) + OST_BLOCK;
- }
- ost_offset_p = (oststr_ptr - oststr);
- ost_offset_e = (oststr_end - oststr);
- if((oststr_ptr + (slen+1+4)) > oststr_end) {
- if((oststr = realloc(oststr, (unsigned)(oststr_end + OST_BLOCK))) == NULL) {
- printf("OSTSTR memory reallocation error.\n");
- return(-1);
- }
- oststr_ptr = oststr + ost_offset_p;
- oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
- }
- }
-
- // If this is a debug symbol and the include debug symbol flag (-g) is not set then do nothing
- if((type & 0xF0000000) && !gflag) {
- // Do nothing
- } else {
- ostresult = ost_lookup(name); // Get symbol index in OST
- // If the symbol is in the output symbol table and the bflag is set (don't remove multiply
- // defined locals) and this is not an external/global symbol *** OR *** the symbol is not
- // in the output symbol table then add it.
- if(((ostresult != -1) && bflag && !(type & 0x01000000)) ||
- ((ostresult != -1) && gflag && (type & 0xF0000000)) || (ostresult == -1)) {
- if((type & 0xF0000000) == 0x40000000)
- putlong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
- else
- putlong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
- putlong(ost_ptr + 4, type );
- putlong(ost_ptr + 8, value);
- ost_ptr += 12;
- // If the symbol type is anything but a debug line information symbol then write
- // the symbol string to the string table
- if((type & 0xF0000000) != 0x40000000) {
- strcpy(oststr_ptr, name); // Put symbol name in string table
- *(oststr_ptr + slen) = '\0'; // Add null terminating character
- oststr_ptr += (slen + 1);
- putlong(oststr_ptr, 0x00000000); // Null terminating long
- putlong(oststr, (oststr_ptr - oststr)); // Update size of string table
- }
- return(ost_index++); // Return OST index
- }
- }
-
- return(0); // not sure about this as it could affect return indices. needed to stop return error.
+ return 1;
}
+
//
-// --- Return the Index of a Symbol in the Output Symbol Table -------------------------------------
+// Process an ar archive file (*.a)
//
+int LoadArchive(char * fname, int fd)
+{
+ // Read in the archive file to memory and process
+ long size = FileSize(fd);
+ char * ptr = malloc(size);
+ char * endPtr = ptr + size;
+ char * longFilenames = NULL;
-int ost_lookup(char *sym) {
- int i; // Iterator
- int stro = 4; // Offset in string table
-
- for(i = 0; i < ost_index; i++) {
- if(!strcmp(oststr+stro, sym)) {
- return(i+1);
- } else {
- stro += strlen(oststr+stro) + 1;
- }
- }
+ if (ptr == NULL)
+ {
+ printf("Out of memory while processing %s\n", fname);
+ close(fd);
+ return 1;
+ }
- return(-1);
-}
+ if (read(fd, ptr, size) != size)
+ {
+ printf("File read error on %s\n", fname);
+ close(fd);
+ free(ptr);
+ return 1;
+ }
-//
-// --- Add Unresolved Externs to the Output Symbol Table -------------------------------------------
-//
+ close(fd);
-int dounresolved(void) {
- struct HREC *hptr, *htemp; // Hash record pointers
+ // Save the pointer for later...
+ arPtr[arIndex++] = ptr;
+ char objName[FNLEN];
+ char objSize[11];
+ int i;
+//printf("\nProcessing AR file \"%s\"...\n", fname);
+ ptr += 8;
- hptr = unresolved; // Point to unresolved symbols list
-
- while(hptr != NULL) { // While unresolved list is valid
- if(ost_add(hptr->h_sym, T_EXT, 0L) == -1) return(1);
- htemp = hptr->h_next; // Temporarily get ptr to next record
- free(hptr); // Free current record
- hptr = htemp; // Make next record ptr, current
- }
-
- unresolved = NULL; // Zero unresolved record list
-
- return(0);
-}
-
-// -------------------------------------------------------------------------------------------------
-// Update Object File TEXT and DATA Segments Based on Relocation Records. Take in an OFILE header
-// and flag (T_TEXT, T_DATA) to process. Return (0) is successful or non-zero (1) if failed.
-// -------------------------------------------------------------------------------------------------
-
-int reloc_segment(struct OFILE *ofile, int flag) {
- char *symtab; // Start of symbol table
- char *symbols; // Start of symbols
- char *sptr; // Start of segment data
- char *rptr; // Start of segment relocation records
- unsigned symidx; // Offset to symbol
- unsigned addr; // Relocation address
- unsigned rflg; // Relocation flags
- unsigned olddata; // Old segment data at reloc address
- unsigned newdata = 0; // New segment data at reloc address
- unsigned pad; // Temporary to calculate phrase padding
- int i; // Iterator
- char sym[SYMLEN]; // String for symbol name/hash search
- int ssidx; // Segment size table index
- unsigned glblreloc; // Global relocation flag
- unsigned absreloc; // Absolute relocation flag
- unsigned relreloc; // Relative relocation flag
- unsigned swcond; // Switch statement condition
- unsigned relocsize; // Relocation record size
-
- // If there is no TEXT relocation data for the selected object file segment then update the COF
- // TEXT segment offset allowing for the phrase padding
- if((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize) {
- pad = ((ofile->o_header.tsize+secalign) & ~secalign); // TEXT segment size plus padding
- textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
- if(vflag > 1) { // Verbose mode information
- printf("reloc_segment(%s, TEXT) : No Relocation Data\n", ofile->o_name);
- }
- return(0);
- }
-
- // If there is no DATA relocation data for the selected object file segment then update the COF
- // DATA and BSS segment offsets allowing for the phrase padding
- if((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize) {
- pad = ((ofile->o_header.dsize+secalign) & ~secalign); // DATA segment size plus padding
- dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
- pad = ((ofile->o_header.bsize+secalign) & ~secalign); // BSS segment size plus padding
- bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
- if(vflag > 1) { // Verbose mode information
- printf("reloc_segment(%s, DATA) : No Relocation Data\n", ofile->o_name);
- }
- return(0);
- }
-
- // Verbose mode information
- if(vflag > 1) {
- printf("reloc_segment(%s, %s) : Processing Relocation Data\n",
- ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
- }
-
- // Obtain pointer to start of symbol table
- symtab = (ofile->o_image + 32 + ofile->o_header.tsize + ofile->o_header.dsize +
- ofile->o_header.absrel.reloc.tsize + ofile->o_header.absrel.reloc.dsize);
-
- // Obtain pointer to start of symbols
- symbols = symtab + ofile->o_header.ssize;
-
- // Obtain pointer to start of TEXT segment
- sptr = ofile->o_image + 32;
-
- // Obtain pointer to start of TEXT relocation records
- rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
-
- relocsize = ofile->o_header.absrel.reloc.tsize;
-
- // Update pointers if DATA relocation records are being processed
- if(flag == T_DATA) {
- sptr += ofile->o_header.tsize; // Start of DATA segment
- rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
- relocsize = ofile->o_header.absrel.reloc.dsize;
- }
-
- // Process each relocation record for the TEXT segment
- for(i = 0; i < (int)relocsize; i += 8) {
- // Obtain both the relocation address and the relocation flags from the object file image
- addr = getlong(rptr);
- rflg = getlong(rptr + 4);
- glblreloc = (rflg & 0x00000010) ? 1 : 0; // Set global relocation flag
- absreloc = (rflg & 0x00000040) ? 1 : 0; // Set absolute relocation flag
- relreloc = (rflg & 0x000000A0) ? 1 : 0; // Set relative relocation flag
-
- // Additional processing required for global relocations
- if(glblreloc) {
- // Obtain the string table index for the relocation symbol, look for it in the globals
- // hash table to obtain information on that symbol. For the hash calculation to work
- // correctly it must be placed in a 'clean' string before looking it up.
- symidx = getlong(symtab + ((rflg >> 8) * 12));
- memset(sym, 0, SYMLEN);
- strcpy(sym, symbols + symidx);
- olddata = newdata = 0; // Initialise old and new segment data
- ssidx = ost_lookup(sym);
- newdata = getlong(ost + ((ssidx-1) * 12) + 8);
- }
-
- // Obtain the existing long word segment data and flip words if the relocation flags
- // indicate it relates to a RISC MOVEI instruction
- olddata = getlong(sptr + addr);
- if(rflg & 0x01) olddata = _SWAPWORD(olddata);
-
- // Process record dependant on segment it relates to; TEXT, DATA or BSS. Construct a new
- // relocated segment long word based on the required segment base address, the segment
- // data offset in the resulting COF file and the offsets from the incoming object file.
- //swcond = glblreloc ? ((hptr->h_type & 0x0E000000) >> 16) : (rflg & 0xFFFFFF00);
- swcond = (rflg & 0xFFFFFF00);
- if(!glblreloc) {
- switch(swcond) {
- case 0x00000200: // Absolute Value
- break;
- case 0x00000400: // TEXT segment relocation record
- if(!glblreloc)
- if(flag == T_TEXT) newdata = tbase + textoffset + olddata;
- else newdata = tbase + dataoffset + olddata;
- break;
- case 0x00000600: // DATA segment relocation record
- if(!glblreloc) newdata = dbase + dataoffset + (olddata - ofile->o_header.tsize);
- break;
- case 0x00000800: // BSS segment relocation record
- if(!glblreloc) newdata = bbase + bssoffset +
- (olddata - (ofile->o_header.tsize + ofile->o_header.dsize));
- break;
- }
- } else {
- if (!relreloc) newdata += olddata;
- }
- // Set absolute (long) or relative (word) address of symbol
- if (absreloc) {
- // Flip the new long word segment data if the relocation record indicated a RISC MOVEI
- // instruction and place the resulting data back in the COF segment
- if(rflg & 0x01) newdata = _SWAPWORD(newdata);
-
- putlong(sptr + addr, newdata);
-
- }
- else if (relreloc) {
- putword(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
- }
-
- rptr += 8; // Point to the next relocation record
- }
-
- // Update the COF segment offset allowing for the phrase padding.
- if(flag == T_TEXT) {
- pad = ((ofile->o_header.tsize+secalign) & ~secalign); // TEXT segment plus padding
- textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
- } else {
- pad = ((ofile->o_header.dsize+secalign) & ~secalign); // DATA segment plus padding
- dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
- pad = ((ofile->o_header.bsize+secalign) & ~secalign); // BSS segment plus padding
- bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
- }
-
- return(0); // Return value, should always be zero
-}
+ // Loop through all objects in the archive and process them
+ do
+ {
+ memset(objName, 0, 17);
+ objSize[10] = 0;
-//
-// -------------------------------------------------------------------------------------------------
-// Add a path character to the end of string 's' if it doesn't already end with one.
-// The last occurrance of '/' or '\\' in the string is assumed to be the path character.
-// -------------------------------------------------------------------------------------------------
-//
+ for(i=0; i<16; i++)
+ {
+// if ((ptr[i] == '/') || (ptr[i] == ' '))
+ if ((ptr[i] == ' ') && (i != 0))
+ {
+ objName[i] = 0;
+ break;
+ }
-void pathadd(char *s) {
- char pathchar = 0;
+ objName[i] = ptr[i];
+ }
- while(*s) {
- if(*s == '/' || *s == '\\') pathchar = *s;
- s++;
- }
- s--;
- if(*s == pathchar) return;
+ for(i=0; i<10; i++)
+ {
+ if (ptr[48 + i] == ' ')
+ {
+ objSize[i] = 0;
+ break;
+ }
- *++s = pathchar;
- *++s = 0;
-}
+ objSize[i] = ptr[48 + i];
+ }
-//
-// -------------------------------------------------------------------------------------------------
-// Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the handle of the file
-// successfully opened. p_name is updated to point to a malloc()'ed string which is the name which
-// actually got opened. p_name will return unchanged if the file can't be found.
-// -------------------------------------------------------------------------------------------------
-//
-
-int tryopen(char **p_name) {
- char *name = *p_name; // Filename
- char *tmpbuf, *lastdot; // Buffer and 'dot' pointers
- int fd, hasdot; // File descriptor and 'has dot' flag
-
- // Note that libdir will be an empty string if there is none specified
- if((tmpbuf = malloc((long)strlen(name) + strlen(libdir) + 3)) == NULL) {
- printf("tryopen() : out of memory\n");
- return(-1);
- }
- strcpy(tmpbuf, name);
-
- hasdot = ((lastdot = strrchr(tmpbuf, '.')) > strrchr(tmpbuf, '/')) &&
- (lastdot > strrchr(tmpbuf, '\\'));
-
- if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok; // Try to open file as passed first
- if(!hasdot) {
- strcat(tmpbuf, ".o"); // Try to open file with '.o' added
- if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
- }
-
- // Try the libdir only if the name isn't already anchored
- if(*name != '/' && *name != '\\' && !strchr(name, ':')) {
- strcpy(tmpbuf,libdir);
- // Add a trailing path char if there isn't one already
- pathadd(tmpbuf);
- strcat(tmpbuf, name);
- if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
- if(!hasdot) {
- strcat(tmpbuf, ".o");
- if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
- }
- }
-
- return(-1); // Couldn't open file at all
-
- ok: // What more Atari label use - sigh!!!
-
- if((tmpbuf = realloc(tmpbuf, (long)strlen(tmpbuf) + 1)) == NULL) {
- printf("tryopen() : out of memory\n");
- return(-1);
- }
- *p_name = tmpbuf;
-
- return(fd); // Return file descriptor
-}
+ // Check to see if a long filename was requested
+ if (objName[0] == 0x20)
+ {
+ uint32_t fnSize = atoi(objName + 1);
-//
-// --- Archive File Use, Needs to be Removed -------------------------------------------------------
-//
+ if (longFilenames != NULL)
+ {
+ i = 0;
+ char * currentFilename = longFilenames + fnSize;
-void put_name(struct OFILE *p) {
- int flag = *(p->o_arname);
- printf("%s%s%s", flag ? p->o_arname : "", flag ? ":" : "", p->o_name);
-}
+ while (*currentFilename != 0x0A)
+ objName[i++] = *currentFilename++;
-//
-// -------------------------------------------------------------------------------------------------
-// Collect file names and handles in a buffer so there is less disk activity.
-// Call dofile with flag FALSE for normal object files and archives.
-// Call it with flag TRUE and a symbol name for include files (-i).
-// -------------------------------------------------------------------------------------------------
-//
-
-int dofile(char *fname, int flag, char *sym) {
- int fd; // File descriptor
- int temp; // Temporary storage
-
- if(vflag) { // Verbose information
- printf("dofile() : `%s' %s", fname, flag ? "INCLUDE" : "NORMAL");
- if(flag) printf(" symbol %s", sym);
- printf("\n");
- }
-
- if(hd == NHANDLES) { // Reached maximum file handles
- if(flush_handles()) return(1);
- }
-
- if((fd = tryopen(&fname)) < 0) { // Attempt to open input file
- printf("Cannot find input module %s\n", fname);
- return(1);
- }
-
- // The file is open; save its info in the handle and name arrays
- handle[hd] = fd;
- name[hd] = fname; // This is the name from tryopen()
- hflag[hd] = flag;
-
- if(flag) { // Include files
- temp = strlen(sym); // Get symbol length
- if(temp > 99) { // 100 chars is max length of a symbol
- sym[99] = '\0';
- temp = 99;
- }
-
- // Malloc enough space for two symbols, then build the second one. Second one may be one
- // character longer than first
- if((hsym1[hd] = malloc((long)temp + 1)) == NULL ||
- (hsym2[hd] = malloc((long)temp + 2)) == NULL) {
- printf("dofile() : out of memory for include-file symbols\n");
- return(1);
- }
- strcpy(hsym1[hd], sym);
- strcpy(hsym2[hd], sym);
-
- if(temp == 99) {
- if(sym[99] == 'x') {
- printf("Last char of %s is already 'x': choose another name\n", sym);
- return(1);
- }
- hsym2[hd][99] = 'x';
- } else {
- hsym2[hd][temp] = 'x';
- hsym2[hd][temp+1] = '\0';
- }
- }
-
- hd++; // Increment next handle index
-
- return(0); // No problems
-}
+ objName[i] = 0;
+ }
+ }
+ if ((strncmp(objName, "ARFILENAMES/", 12) == 0) || (strncmp(objName, "//", 2) == 0))
+ {
+ longFilenames = ptr + 60;
+ }
+ else if (HasDotOSuffix(objName))
+ {
-//
-// --- Pad TEXT or DATA Segment to the Requested Boundary ---------------------
-//
-int segmentpad(FILE * fd, long segsize, int value)
-{
- long padsize; // Number of pad bytes needed
- int i; // Good 'ol iterator
- char padarray[32]; // Array of padding bytes
- char * padptr; // Pointer to array
-
- // Determine the number of padding bytes that are needed
- padsize = (segsize + secalign) & ~secalign;
- padsize = padsize - segsize;
-
- // Fill pad array if padding is required
- if (padsize)
- {
- padptr = padarray;
-
- for(i=0; i<16; i++)
- {
- putword(padptr, value);
- padptr += 2;
- }
-
- symoffset += padsize;
-
- if (fwrite(padarray, padsize, 1, fd) != 1) // Write padding bytes
- return 1;
- }
-
- return 0; // All done
-}
+ // Strip off any trailing forward slash at end of object name
+ int lastChar = strlen(objName) - 1;
+ if (objName[lastChar] == '/')
+ objName[lastChar] = 0;
-//
-// --- Write the Output File --------------------------------------------------
-//
-int write_ofile(struct OHEADER * header)
-{
- FILE *fd; // File descriptor
- unsigned osize; // Object segment size
- struct OFILE *otemp; // Object file pointer
- int i, j; // Iterators
- char himage[0x168]; // Header image (COF = 0xA8)
- unsigned tsoff, dsoff, bsoff; // Segment offset values
- unsigned index, type, value; // Symbol table index, type and value
- short abstype; // ABS symbol type
- char symbol[14]; // Symbol record for ABS files
- int slen; // Symbol string length
-
- symoffset = 0; // Initialise symbol offset
-
- if(strchr(ofile, '.') == NULL) { // Add correct output extension if none
- if(aflag && cflag) strcat(ofile, ".cof"); // COF files
- else if(aflag && !cflag) strcat(ofile, ".abs"); // ABS files
- else strcat(ofile, ".o"); // Object files (partial linking etc)
- }
-
- fd = fopen(ofile, "wb"); // Attempt to open output file
- if(!fd) {
- printf("Can't open output file %s\n", ofile); // Error opening output file
- return 1;
- }
-
- // Build the output file header
- if(cflag) { // Absolute (COF) header
- tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
-
- // Process each object file segment size to obtain a cumulative segment size for both
- // the TEXT and DATA segments
- for(i = 0; i < (int)obj_index; i++) {
- dsoff += obj_segsize[i][0]; // Adding TEXT segment sizes
- bsoff += obj_segsize[i][0] + obj_segsize[i][1]; // Adding TEXT and DATA segment sizes
- }
-
- // Currently this only builds a COF absolute file. Conditionals and additional code will
- // need to be added for ABS and partial linking.
-
- // Build the COF_HDR
- putword(himage + 0, 0x0150 ); // Magic Number (0x0150)
- putword(himage + 2, 0x0003 ); // Sections Number (3)
- putlong(himage + 4, 0x00000000 ); // Date (0L)
- putlong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
- putlong(himage + 12, ost_index); // Number of Symbols
- putword(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
- putword(himage + 18, 0x0003 ); // Executable Flags (3)
-
- // Build the RUN_HDR
- putlong(himage + 20, 0x00000107 ); // Magic/vstamp
- putlong(himage + 24, header->tsize ); // TEXT size in bytes
- putlong(himage + 28, header->dsize ); // DATA size in bytes
- putlong(himage + 32, header->bsize ); // BSS size in bytes
- putlong(himage + 36, tbase ); // Start of executable, normally @TEXT
- putlong(himage + 40, tbase ); // @TEXT
- putlong(himage + 44, dbase ); // @DATA
-
- // Build the TEXT SEC_HDR
- putlong(himage + 48, 0x2E746578 );
- putlong(himage + 52, 0x74000000 ); // ".text"
- putlong(himage + 56, tbase ); // TEXT START
- putlong(himage + 60, tbase ); // TEXT START
- putlong(himage + 64, header->tsize ); // TEXT size in bytes
- putlong(himage + 68, tsoff ); // Offset to section data in file
- putlong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
- putlong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
- putlong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
- putlong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
-
- // Build the DATA SEC_HDR
- putlong(himage + 88, 0x2E646174 );
- putlong(himage + 92, 0x61000000 ); // ".data"
- putlong(himage + 96, dbase ); // DATA START
- putlong(himage + 100, dbase ); // DATA START
- putlong(himage + 104, header->dsize ); // DATA size in bytes
- putlong(himage + 108, dsoff ); // Offset to section data in file
- putlong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
- putlong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
- putlong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
- putlong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
-
- // Build the BSS SEC_HDR
- putlong(himage + 128, 0x2E627373 );
- putlong(himage + 132, 0x00000000 ); // ".bss"
- putlong(himage + 136, bbase ); // BSS START
- putlong(himage + 140, bbase ); // BSS START
- putlong(himage + 144, header->bsize ); // BSS size in bytes
- putlong(himage + 148, bsoff ); // Offset to section data in file
- putlong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
- putlong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
- putlong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
- putlong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
-
- symoffset = 168; // Update symbol offset
- } else { // Absolute (ABS) header
- // Build the ABS header
- putword(himage + 0, 0x601B ); // Magic Number (0x601B)
- putlong(himage + 2, header->tsize ); // TEXT segment size
- putlong(himage + 6, header->dsize ); // DATA segment size
- putlong(himage + 10, header->bsize ); // BSS segment size
- putlong(himage + 14, ost_index * 14 ); // Symbol table size (?)
- putlong(himage + 18, 0x00000000 ); //
- putlong(himage + 22, tbase ); // TEXT base address
- putword(himage + 26, 0xFFFF ); // Flags (?)
- putlong(himage + 28, dbase ); // DATA base address
- putlong(himage + 32, bbase ); // BSS base address
-
- symoffset = 36; // Update symbol offset
- }
-
- // Write the header, but not if noheaderflag
- if(!cflag) { // Absolute (ABS) header
- if(!noheaderflag)
- if(fwrite(himage, 36, 1, fd) != 1)
- goto werror;
- } else { // Absolute (COF) header
- if(fwrite(himage, 168, 1, fd) != 1)
- goto werror;
- }
-
- // Write the TEXT segment of each object file
- for(otemp = olist; otemp != NULL; otemp = otemp->o_next) {
- osize = otemp->o_header.tsize;
- if(osize) { // Write only if segment has size
- if(vflag > 1)
- printf("Writing TEXT Segment of %s\n", otemp->o_name);
- if(fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
- goto werror;
- // Pad to required alignment boundary
- if(segmentpad(fd, osize, 0x0000))
- goto werror;
- symoffset += osize;
- }
- }
-
- // Write the DATA segment of each object file
- for(otemp = olist; otemp != NULL; otemp = otemp->o_next) {
- osize = otemp->o_header.dsize;
- if(osize) { // Write only if the segment has size
- if(vflag > 1)
- printf("Writing DATA Segment of %s\n", otemp->o_name);
- if(fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1) goto werror;
- // Pad to required alignment boundary
- if(segmentpad(fd, osize, 0))
- goto werror;
- symoffset += osize;
- }
- }
-
-if(!noheaderflag) {
-
- // Write the symbols table and string table
- if(cflag) { // Absolute (COF) symbol/string table
- if(header->ssize) {
- if(fwrite(ost, (ost_ptr - ost), 1, fd) != 1) goto werror;
- if(fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1) goto werror;
- }
- } else { // Absolute (ABS) symbol/string table
- // The symbol and string table have been created as part of the dosym() function and the
- // output symbol and string tables are in COF format. For an ABS file we need to process
- // through this to create the 14 character long combined symbol and string table.
- // Format of symbol table in ABS: AAAAAAAATTVVVV, where (A)=STRING, (T)=TYPE & (V)=VALUE
-
- for(i = 0; i < ost_index; i++) {
- memset(symbol, 0, 14); // Initialise symbol record
- abstype = 0; // Initialise ABS symbol type
- slen = 0; // Initialise symbol string length
- index = getlong(ost + (i * 12)); // Get symbol index
- type = getlong((ost + (i * 12)) + 4); // Get symbol type
- if(type & 0xF0000000) continue; // Not doing debug symbols
- value = getlong((ost + (i * 12)) + 8); // Get symbol value
- slen = strlen(oststr + index);
- if(slen > 8) { // Get symbol string (maximum 8 chars)
- for(j = 0; j < 8; j++) *(symbol + j) = *(oststr + index + j);
- } else {
- for(j = 0; j < slen; j++) *(symbol + j) = *(oststr + index + j);
- }
- switch(type) { // Modify to ABS symbol type
- case 0x02000000: abstype = (short)ABST_DEFINED; break;
- case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
- case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
- case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
- case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
- case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
- case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
- default:
- printf("write_ofile: abs, cannot determine symbol type\n");
- type = 0;
- break;
- }
- putword(symbol + 8, abstype); // Write back new ABS type
- putlong(symbol + 10, value); // Write back value
- if(fwrite(symbol, 14, 1, fd) != 1) goto werror; // Write symbol record
- }
- }
+//printf("Processing object \"%s\" (size == %i, obj_index == %i)...\n", objName, atoi(objSize), obj_index);
+ uint32_t tSize = (GetLong(ptr + 60 + 4) + secalign) & ~secalign;
+ uint32_t dSize = (GetLong(ptr + 60 + 8) + secalign) & ~secalign;
+ uint32_t bSize = (GetLong(ptr + 60 + 12) + secalign) & ~secalign;
-}
+ if (AddToProcessingList(ptr + 60, objName, fname, 1, tSize, dSize, bSize))
+ return 1;
+ }
- // Close the file
- if(fclose(fd)) {
- printf("Close error on output file %s\n",ofile);
- return(1);
- } else return(0);
-
- werror: // OMG! Why did Atari use these :)
-
- printf("Write error on output file %s\n", ofile);
- fclose(fd); // Try to close output file anyway
- return(1);
-}
+ uint32_t size = atoi(objSize);
+ size += (size & 0x01 ? 1 : 0);
+ ptr += 60 + size;
+ }
+ while (ptr < endPtr);
-//
-// --- Display the Symbol Load Map -----------------------------------------------------------------
-//
-
-int write_map(struct OHEADER *header) {
- unsigned i, o; // Inner and outer loop iterators
- unsigned c; // Column number
- unsigned index; // Symbol string index
- unsigned type; // Symbol type
- unsigned value; // Symbol value
- char *symbol; // Symbol string value
-
- if(ost_index == 0) return(0); // Return if no symbols to map
-
- printf("LOAD MAP\n\n");
-
- // Outer loop for each of the symbol areas to map out;
- // 0 = NON-RELOCATABLE SYMBOLS
- // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
- // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
- // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
- for(o = 0; o < 4; o++) {
- // Display the correct map header for the symbols being processed
- switch(o) {
- case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
- case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
- case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
- case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
- }
-
- c = 0; // Initialise column number
-
- // Inner loop to process each record in the symbol table
- for(i = 0; i < (unsigned)ost_index; i++) {
- index = getlong(ost + (i * 12)); // Get symbol string index
- type = getlong(ost + (i * 12) + 4); // Get symbol type
- value = getlong(ost + (i * 12) + 8); // Get symbol value
- symbol = oststr + index; // Get symbol string
-
- if(c == 3) { // Display only three columns
- printf("\n");
- c = 0;
- }
-
- // If local symbols not included and the type is local then go to next symbol record
- if(!lflag & !(type & 0x01000000)) continue;
-
- // Output each symbol to the display, dependant on type
- switch(o) {
- case 0: // Non-relocatable symbols
- if(type == 0x02000000 || type == 0x03000000) {
- printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
- c++;
- }
- break;
- case 1: // TEXT segment relocatable symbols
- if(type == 0x04000000 || type == 0x05000000) {
- printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
- c++;
- }
- break;
- case 2: // DATA segment relocatble symbols
- if(type == 0x06000000 || type == 0x07000000) {
- printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
- c++;
- }
- break;
- case 3: // BSS segment relocatable symbols
- if(type == 0x08000000 || type == 0x09000000) {
- printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
- c++;
- }
- break;
- }
- }
-
- printf("\n\n");
- }
-
- return(0); // All done
+ return 0;
}
//
-// --- Convert ASCII to Hexadecimal -------------------------------------------
+// Process files (*.o, *.a) passed in on the command line
//
-//int atolx(char * string, long * value)
-int atolx(char * string, int * value)
+int ProcessFiles(void)
{
- *value = 0;
+ int i;
+ char magic[8]; // Magic header number (4 bytes for *.o, 8 for *.a)
- while (isxdigit(*string))
+ // Process all file handles
+ for(i=0; i<(int)hd; i++)
{
- if (isdigit(*string))
+ // Verbose mode information
+ if (vflag == 1)
+ printf("Read file %s%s\n", name[i], (hflag[i] ? " (include)" : ""));
+
+ if (!hflag[i])
{
- *value = (*value << 4) + (*string++ - '0');
+ // Attempt to read file magic number (OBJECT/ARCHIVE FILES)
+ if (read(handle[i], magic, 8) != 8)
+ {
+ printf("Error reading file %s\n", name[i]);
+ close(handle[i]);
+ return 1;
+ }
+
+ lseek(handle[i], 0L, 0); // Reset to start of input file
+
+ // Look for RMAC/MAC/GCC (a.out) object files
+ if ((GetLong(magic) & 0xFFFF) == 0x0107)
+ {
+ // Process input object file
+ if (LoadObject(name[i], handle[i], 0L))
+ return 1;
+ }
+ // Otherwise, look for an object archive file
+ else if (strncmp(magic, "!<arch>\x0A", 8) == 0)
+ {
+ if (LoadArchive(name[i], handle[i]))
+ return 1;
+ }
+ else
+ {
+ // Close file and error
+ printf("%s is not a supported object or archive file\n", name[i]);
+ printf("Magic == [%02X][%02X][%02X][%02X]\n", magic[0], magic[1], magic[2], magic[3]);
+ close(handle[i]);
+ return 1;
+ }
}
else
{
- if (isupper(*string))
- *string = tolower(*string);
-
- *value = (*value << 4) + ((*string++ - 'a') + 10);
+ // INCLUDE FILES
+ // If hflag[i] is 1, include this in the data segment; if 2, put it
+ // in text segment
+ if (LoadInclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
+ return 1;
}
}
- if (*string != '\0')
+ // Free include, symbol & object handles
+ for(i=0; i<(int)hd; i++)
{
- printf("Invalid hexadecimal value");
- return 1;
+ free(name[i]);
+
+ if (hflag[i])
+ {
+ free(hsym1[i]);
+ free(hsym2[i]);
+ }
}
+ // Reset next handle indicator
+ hd = 0;
return 0;
}
//
-// ----------------------------------------------------------------------------
-// Stuff the (long) value of a string into the value argument. RETURNS TRUE if
-// the string doesn't parse. Parses only as a hex string.
-// ----------------------------------------------------------------------------
-//
-//int getval(char * string, long * value)
-int getval(char * string, int * value)
-{
- return atolx(string, value);
-}
-
-
-//
-// ----------------------------------------------------------------------------
-// Create one big .o file from the images already in memory, returning a
-// pointer to an OHEADER. Note that the oheader is just the header for the
-// output (plus some other information). The text, data, and fixups are all
-// still in the ofile images hanging off the global `olist'.
-// ----------------------------------------------------------------------------
+// Load newargv with pointers to arguments found in the buffer
//
-struct OHEADER * make_ofile()
+int parse(char * buf, char * newargv[])
{
- unsigned tptr, dptr, bptr; // Bases in runtime model
- int ret = 0; // Return value
- struct OFILE *otemp, *oprev, *ohold; // Object file list pointers
- struct OHEADER *header; // Output header pointer
-
- textsize = datasize = bsssize = 0; // Initialise cumulative segment sizes
-
- // For each object file, accumulate the sizes of the segments but remove those
- // object files which are unused
- oprev = NULL; // Init previous obj file list ptr
- otemp = olist; // Set temp pointer to object file list
- while (otemp != NULL) {
- if(!(otemp->o_flags & O_ARCHIVE)) { // UNUSED !!!!!
- if((otemp->o_flags & O_USED) == 0) {
- if(wflag) {
- printf("Unused object file ");
- put_name(otemp);
- printf(" discarded.\n");
- }
- if(oprev == NULL) {
- olist = otemp->o_next;
- } else {
- oprev -> o_next = otemp->o_next;
- }
- ohold = otemp;
- free(ohold->o_image);
- free(ohold);
- } else {
- // Increment total of segment sizes ensuring requested alignment
- textsize += (otemp->o_header.tsize+secalign) & ~secalign;
- datasize += (otemp->o_header.dsize+secalign) & ~secalign;
- bsssize += (otemp->o_header.bsize+secalign) & ~secalign;
- oprev = otemp;
- }
- }
- otemp = otemp->o_next; // Go to next object file list pointer
- }
-
- // Update base addresses and create symbols _TEXT_E, _DATA_E and _BSS_E
- tbase = tval;
- ost_add("_TEXT_E", 0x05000000, tval + textsize);
- if(!dval) {
- // DATA follows TEXT
- dbase = tval + textsize;
- ost_add("_DATA_E", 0x07000000, tval + textsize + datasize);
- if(!bval) {
- // BSS follows DATA
- bbase = tval + textsize + datasize;
- ost_add("_BSS_E", 0x09000000, tval + textsize + datasize + bsssize);
- } else {
- // BSS is independant of DATA
- bbase = bval;
- ost_add("_BSS_E", 0x09000000, bval + bsssize);
- }
- } else {
- // DATA is independant of TEXT
- dbase = dval;
- ost_add("_DATA_E", 0x07000000, dval + datasize);
- if(!bval) {
- // BSS follows DATA
- bbase = dval + datasize;
- ost_add("_BSS_E", 0x09000000, dval + datasize + bsssize);
- } else {
- // BSS is independant of DATA
- bbase = bval;
- ost_add("_BSS_E", 0x09000000, bval + bsssize);
- }
- }
-
- // Place each unresolved symbol in the output symbol table
- if(dounresolved()) return(NULL);
-
- tptr = 0; // Initialise base addresses
- dptr = 0;
- bptr = 0;
-
- // For each file, relocate its symbols and add them to the output symbol table
- otemp = olist;
- oprev = NULL;
- while (otemp != NULL) {
- otemp->o_tbase = tptr;
- if(!(otemp->o_flags & O_ARCHIVE)) { // Do rest only for non-ARCHIVE markers
- otemp->o_dbase = dptr;
- otemp->o_bbase = bptr;
- tptr += (otemp->o_header.tsize+secalign) & ~secalign;
- dptr += (otemp->o_header.dsize+secalign) & ~secalign;
- bptr += (otemp->o_header.bsize+secalign) & ~secalign;
- }
- // For each symbol, (conditionally) add it to the ost
- // For ARCHIVE markers, this adds the symbol for the file & returns
- if(dosym(otemp))
- return(NULL);
- if(otemp->o_flags & O_ARCHIVE) {
- // Now that the archive is marked, remove it from list
- if(oprev == NULL) {
- olist = otemp->o_next;
- } else {
- oprev->o_next = otemp->o_next;
- }
- ohold = otemp;
- if(ohold->o_image) free(ohold->o_image);
- free(ohold);
- } else {
- oprev = otemp;
- }
- otemp = otemp->o_next;
- }
-
- // Places all the externs, globals etc into the output symbol table
- if(docommon() == -1) return NULL;
-
- // Create a new output file header
- if((header = new_oheader()) == NULL) {
- printf("make_ofile: out of memory!\n");
- return(NULL);
- }
-
- // Fill in the output header. Does not match the actual output but values used as reference
- header->magic = 0x0150; // COF magic number
- header->tsize = textsize; // TEXT segment size
- header->dsize = datasize; // DATA segment size
- header->bsize = bsssize; // BSS segment size
- header->ssize = (ost_ptr - ost); // Symbol table size
- header->ostbase = ost; // Output symbol table base address
-
- // For each object file, relocate its TEXT and DATA segments. OR the result into ret so all
- // files get moved (and errors reported) before returning with the error condition
- for(otemp = olist; otemp != NULL; otemp = otemp->o_next) {
- if(!(otemp->o_flags & O_ARCHIVE)) {
- ret |= reloc_segment(otemp, T_TEXT); // TEXT segment relocations
- ret |= reloc_segment(otemp, T_DATA); // DATA segment relocations
- }
- }
-
- hash_free(); // Done with global symbol hash tables
-
- return (ret ? (unsigned)NULL : header);
-}
+ int i = 1;
+ if (vflag)
+ printf("begin parsing\n");
-//
-// --- Add Symbol to Hash List ------------------------------------------------
-//
-int add_to_hlist(struct HREC **hptr, char *sym, struct OFILE *ofile, long value, int type)
-{
- struct HREC *htemp; // Temporary hash record pointer
- int i;
+ while (1)
+ {
+ while (*buf && strchr(",\t\n\r\14 ", *buf))
+ buf++;
- if((htemp = new_hrec()) == NULL) { // Attempt to allocate new hash record
- printf("Out of memory\n");
- return 1;
- }
+ /* test for eof */
+ if (*buf == '\0' || *buf == 26)
+ {
+ if (i == 0)
+ {
+ printf("No commands in command file\n");
+ return -1;
+ }
+ else
+ {
+ return i;
+ }
+ }
- for(i = 0; i < SYMLEN; i++) htemp->h_sym[i] = '\0';
+ /* test for comment */
+ if (*buf == '#')
+ {
+ /* found a comment; skip to next \n and start over */
+ while (*buf && *buf != '\n')
+ buf++;
- strcpy(htemp->h_sym, sym); // Populate hash record
- htemp->h_ofile = ofile;
- htemp->h_value = value;
- htemp->h_type = type;
+ continue;
+ }
- htemp->h_next = *hptr; // Update hash record pointers
- *hptr = htemp;
+ if (i == MAXARGS)
+ {
+ printf("Too many arguments in command file\n");
+ return -1;
+ }
- return(0);
-}
+ newargv[i] = buf;
+ while (!strchr(",\t\n\r\14 ", *buf))
+ {
+ if (*buf == '\0' || *buf == 26)
+ {
+ printf("Finished parsing %d args\n", i);
+ return i;
+ }
-//
-// --- Add Symbol to the Unresolved Symbols Hash Table ------------------------
-//
-add_unresolved(char * sym, struct OFILE * ofile)
-{
- if (vflag > 1)
- printf("add_unresolved(%s,%s)\n", sym, ofile->o_name);
+ buf++;
+ }
- return add_to_hlist(&unresolved, sym, ofile, 0L, 0);
-}
+ *buf++ = '\0';
+ if (vflag)
+ printf("argv[%d] = \"%s\"\n", i, newargv[i]);
-//
-// --- Generate and Return Hash Value -----------------------------------------
-//
-int dohash(char * s)
-{
- int i = (s[0]+s[1]+s[2]+s[3]+s[4]+s[5]+s[6]+s[7] +s[8]+s[9]+s[10]+s[11]+s[12]+s[13]+s[14]) % NBUCKETS;
- return(i);
+ i++;
+ }
}
//
-// --- Lookup a Symbol in the Hash Table --------------------------------------
+// Process in a link command file
//
-struct HREC * lookup(char * sym)
+int docmdfile(char * fname)
{
- struct HREC * hptr = htable[dohash(sym)]; // Hash index to record based on sym
- char symbol[SYMLEN]; // Temporary symbol storage
+ int fd; // File descriptor
+ unsigned size; // Command file size
+ char * ptr; // Pointer
+ int newargc; // New argument count
+ char * (*newargv)[]; // New argument value array
- memset(symbol, 0, SYMLEN); // Clean string for comparison
- strcpy(symbol, sym);
+ // Verbose information
+ if (vflag > 1)
+ printf("docmdfile(%s)\n", fname);
- while (hptr != NULL)
- {
- if (symcmp(symbol, hptr->h_sym))
- return hptr;
+ // Allocate memory for new argument values
+ newargv = malloc((long)(sizeof(char *) * MAXARGS));
- hptr = hptr->h_next; // Return hash pointer if found
- }
+ if (!newargv)
+ {
+ printf("Out of memory.\n");
+ return 1;
+ }
- return NULL; // Not found in hash table
-}
+ // Attempt to open and read in the command file
+ if (fname)
+ {
+ if ((fd = open(fname, _OPEN_FLAGS)) < 0)
+ {
+ printf("Cannot open command file %s.\n", fname);
+ return 1;
+ }
+ size = FileSize(fd);
-//
-// --- Add Symbol to the Hash Table -------------------------------------------
-//
-int hash_add(char * sym, long type, long value, struct OFILE * ofile)
-{
- struct HREC * hptr;
- int flag = !iscommon(type);
-
- if (vflag > 1)
- {
- printf("hash_add(%s,%s,%lx,", sym, ofile->o_name,value);
- printf("%x,%s)\n", (unsigned int)type, (flag ? "GLOBAL" : "COMMON"));
- }
-
- if ((hptr = lookup(sym)) == NULL)
- {
- return(add_to_hlist(&htable[dohash(sym)], sym, ofile, value, type));
- }
-
- // Already there!
- if (iscommon(type) && !iscommon(hptr->h_type))
- {
- // Mismatch: global came first; warn and keep the global one
- if (wflag)
- {
- printf("Warning: %s: global from ",sym);
- put_name(hptr->h_ofile);
- printf(" used, common from ");
- put_name(ofile);
- printf(" discarded.\n");
- }
-
- putword(sym + 8, ABST_EXTERN);
- putlong(sym + 10, 0L);
- }
- else if (iscommon(hptr->h_type) && !iscommon(type))
- {
- // Mismatch: common came first; warn and keep the global one
- if (wflag)
- {
- printf("Warning: %s: global from ", sym);
- put_name(ofile);
- printf(" used, common from ");
- put_name(hptr->h_ofile);
- printf(" discarded.\n");
- }
-
- hptr->h_type = type;
- hptr->h_ofile = ofile;
- hptr->h_value = value;
- }
- else if (flag)
- { // They're both global
- // Global exported by another ofile; warn and make this one extern
- if (wflag)
- {
- printf("Duplicate symbol %s: ", sym);
- put_name(hptr->h_ofile);
- printf(" used, ");
- put_name(ofile);
- printf(" discarded\n");
- }
-
- putword(sym + 8, ABST_EXTERN);
- }
- else
- { // They're both common
- if (hptr->h_value < value)
- {
- hptr->h_value = value;
- hptr->h_ofile = ofile;
- }
- }
-
- return(0);
-}
+ if ((ptr = malloc(size + 1)) == NULL)
+ {
+ printf("Out of memory.\n");
+ close(fd);
+ return 1;
+ }
-//
-// -------------------------------------------------------------------------------------------------
-// Add the imported symbols from this file to unresolved, and the global and common symbols to the
-// exported hash table.
-//
-// Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
-// (type == (T_GLOBAL | T_EXTERN)).
-// -------------------------------------------------------------------------------------------------
-//
-
-int add_symbols(struct OFILE *Ofile) {
- long nsymbols; // Number of symbols in object file
- char *ptr; // Object data base pointer
- char *sfix; // Symbol fixup table pointer
- char *sstr; // Symbol string table pointer
- long index; // String index
- long type; // Symbol type
- long value; // Symbol value
- struct HREC *hptr; // Hash record pointer
- char symbol[SYMLEN];
-
- if(vflag > 1)
- printf("Add symbols for file %s\n", Ofile->o_name);
-
- ptr = Ofile->o_image + 32 + // Get base pointer, start of sym fixups
- Ofile->o_header.tsize +
- Ofile->o_header.dsize +
- Ofile->o_header.absrel.reloc.tsize +
- Ofile->o_header.absrel.reloc.dsize;
- sfix = ptr; // Set symbol fixup pointer
- sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
- nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
-
- while(nsymbols) {
- index = getlong(sfix); // Get symbol string index
- type = getlong(sfix+4); // Get symbol type
- value = getlong(sfix+8); // Get symbol value
- memset(symbol, 0, SYMLEN);
- strcpy(symbol, sstr+index);
-
- if(type & T_EXT) { // If this is a global/external
- if((type - T_EXT)) {
- if(hash_add(symbol, type, value, Ofile)) { // Then add to hash table
- return(1); // Error if addition failed
- }
- } else {
- if((hptr = lookup(symbol)) != NULL) { // If value is zero and in hash table
- hptr->h_ofile->o_flags |= O_USED; // Mark symbol as used
- } else if(add_unresolved(symbol, Ofile)) { // Otherwise add to unresolved list
- return(1); // Error if addition failed
- }
- }
- }
-
- sfix += 12; // Increment symbol fixup pointer
- nsymbols--; // Decrement num of symbols to process
- }
-
- return(0); // Success loading symbols
-}
+ if (read(fd, ptr, size) != (int)size)
+ {
+ printf("Read error on command file %s.\n", fname);
+ close(fd);
+ return 1;
+ }
-//
-// --- Process Object File for Symbols -------------------------------------------------------------
-//
-
-int doobj(char *fname, char *ptr, char *aname, int flags) {
- struct OFILE *Ofile; // Object record pointer
- char *temp; // Temporary data pointer
-
- if((Ofile = new_ofile()) == NULL) { // Allocate memory for object record ptr
- printf("Out of memory processing %s\n",fname);
- return(1);
- }
-
- // Starting after all pathnames, etc., copy .o file name to Ofile
- temp = path_tail(fname);
- if(strlen(temp) > FNLEN - 1) { // Check filename length
- printf("File name too long: %s\n", temp);
- return(1);
- }
- if(strlen(aname) > FNLEN - 1) { // Check archive name length
- printf("Archive name too long: %s\n", aname);
- return(1);
- }
- strcpy(Ofile->o_name, temp); // Store filename
- strcpy(Ofile->o_arname, aname); // Store archive name
-
- Ofile->o_next = NULL; // Initialise object record information
- Ofile->o_tbase = 0;
- Ofile->o_dbase = 0;
- Ofile->o_bbase = 0;
- Ofile->o_flags = flags;
- Ofile->o_image = ptr;
-
- // Don't do anything if this is just an ARCHIVE marker, just add the file to the olist
- if(!(flags & O_ARCHIVE)) {
- Ofile->o_header.magic = getlong(ptr);
- Ofile->o_header.tsize = getlong(ptr+4);
- Ofile->o_header.dsize = getlong(ptr+8);
- Ofile->o_header.bsize = getlong(ptr+12);
- Ofile->o_header.ssize = getlong(ptr+16);
- Ofile->o_header.absrel.reloc.tsize = getlong(ptr+24);
- Ofile->o_header.absrel.reloc.dsize = getlong(ptr+28);
-
- // Round BSS off to alignment boundary
- Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
- if(Ofile->o_header.dsize & 7) {
- printf("Warning: data segment size of ");
- put_name(Ofile);
- printf(" is not a phrase multiple\n");
- }
-
- // Check for odd segment sizes
- if((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1) || (Ofile->o_header.bsize & 1)) {
- printf("Error: odd-sized segment in ");
- put_name(Ofile);
- printf("; link aborted.\n");
- return(1);
- }
-
- if(add_symbols(Ofile)) return(1);
- }
-
- // Add this file to the olist
- if(olist == NULL)
- olist = Ofile;
- else
- olast->o_next = Ofile;
- olast = Ofile;
- return(0);
-}
+ *(ptr + size) = 0; // Null terminate the buffer
+ close(fd);
+ }
+ else
+ {
+ printf("No command filename specified\n");
+ return 1;
+ }
-//
-// --- Remove Elements from Unresolved List which are Resolvable -----------------------------------
-//
-
-int dolist(void) {
- struct HREC *uptr; // Unresolved hash record pointer
- struct HREC *prev = NULL; // Previous hash record pointer
- struct HREC *htemp; // Temporary hash record pointer
- struct OFILE *ptemp; // Temporary object file record pointer
-
- while (plist != NULL) { // Process object file list
- if(doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags))
- return(1);
- ptemp = plist;
- plist = plist->o_next;
- free(ptemp);
- }
-
- for(uptr = unresolved; uptr != NULL; ) { // Process unresolved list
- if(vflag > 1) printf("lookup(%s) => ",uptr->h_sym);
- if((htemp = lookup(uptr->h_sym)) != NULL) {
- if(vflag > 1)
- printf(" %s in %s\n", isglobal(htemp->h_type) ? "global" : "common", htemp->h_ofile->o_name);
- htemp->h_ofile->o_flags |= O_USED;
- if(prev == NULL) {
- unresolved = uptr->h_next;
- free(uptr);
- uptr = unresolved;
- } else {
- prev->h_next = uptr->h_next;
- free(uptr);
- uptr = prev->h_next;
- }
- } else {
- printf("NULL\n");
- prev = uptr;
- uptr = uptr->h_next;
- }
- }
-
- return(0);
-}
+ // Parse the command file
+ if ((newargc = parse(ptr, *newargv)) == -1)
+ {
+ return 1;
+ }
-//
-// --- Extract Filename from Path ------------------------------------------------------------------
-//
+ // Process the inputted flags
+ if (doargs(newargc, *newargv))
+ {
+ printf("docmdfile: doargs returns TRUE\n");
+ return 1;
+ }
-char *path_tail(char *name) {
- char *temp; // Temporary pointer
+ free(ptr);
+ free(newargv);
- temp = max(strrchr(name,'/'), max(strrchr(name,':'), strrchr(name, 92)));
- if(temp == NULL) temp = (name - 1);
- return(temp + 1);
+ return 0;
}
-//
-// --- Add Input File to Processing List -----------------------------------------------------------
-//
-
-
-int pladd(char *ptr, char *fname) {
- if(plist == NULL) {
- plist = new_ofile(); // First time object record allocation
- plast = plist; // Update last object record pointer
- } else {
- plast->o_next = new_ofile(); // Next object record allocation
- plast = plast->o_next; // Update last object record pointer
- }
-
- if(plast == NULL) {
- printf("Out of memory.\n"); // Error if memory allocation fails
- return(1);
- }
-
- if(strlen(path_tail(fname)) > FNLEN-1) { // Error on excessive filename length
- printf("File name too long: %s (sorry!)\n",fname);
- return(1);
- }
-
- strcpy(plast->o_name, path_tail(fname)); // Store filename, not path
- *plast->o_arname = 0; // No archive name for this file
- plast->o_image = ptr; // Store data pointer
- plast->o_flags = O_USED; // File is used
- plast->o_next = NULL; // Initialise next record pointer
- return(0); // Return without errors
-}
-
-// -------------------------------------------------------------------------------------------------
-// Process in Binary Include Files and Add them to the Processing List. This routine takes in the
-// binary file and creates an 'object' file in memory. Sym1/Sym2 point to the start and end of data.
//
-// Image size for include files is:
-// Header ....... 32 bytes
-// Data ......... dsize
-// Sym Fixups ... 2 * 12 bytes
-// Symbol Size .. 4 bytes (Value to include symbols and terminating null)
-// Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
-// Terminate .... 4 bytes (0x00000000)
-// -------------------------------------------------------------------------------------------------
-
-int doinclude(char *fname, int handle, char *sym1, char *sym2, int segment) {
- long fsize, dsize, size; // File, DATA segment and image sizes
- char *ptr, *sptr; // Data pointers
- int i; // Iterators
- int sym1len = 0; // Symbol 1 length
- int sym2len = 0; // Symbol 2 length
- unsigned symtype = 0;
-
- fsize = FSIZE(handle); // Get size of include file
- dsize = (fsize+secalign) & ~secalign; // Round up to a alignment boundary
-
- sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
- sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
-
- size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
-
- // Use calloc so the header & fixups initialize to zero
- if((ptr = calloc(size, 1L)) == NULL) { // Allocate object image memory
- printf("Out of memory while including %s\n", fname);
- close(handle);
- return(1);
- }
-
- if(read(handle, ptr+32, fsize) != fsize) { // Read in binary data
- printf("File read error on %s\n", fname);
- close(handle);
- free(ptr);
- return(1);
- }
- close(handle); // Close file
-
-
- strcpy(obj_fname[obj_index], path_tail(fname));
-
- // Build this image's dummy header
- putlong(ptr, 0x00000107); // Magic number
- if(segment) {
- putlong(ptr+4, dsize); // Text size
- putlong(ptr+8, 0L); // Data size
- symtype = 0x05000000;
- obj_segsize[obj_index][0] = dsize;
- obj_segsize[obj_index][1] = 0;
- obj_segsize[obj_index][2] = 0;
- } else {
- putlong(ptr+4, 0L); // Text size
- putlong(ptr+8, dsize); // Data size
- symtype = 0x07000000;
- obj_segsize[obj_index][0] = 0;
- obj_segsize[obj_index][1] = dsize;
- obj_segsize[obj_index][2] = 0;
- }
-
- obj_index++; // Increment object count
-
- putlong(ptr+12, 0L); // BSS size
- putlong(ptr+16, 24); // Symbol table size
- putlong(ptr+20, 0L); // Entry point
- putlong(ptr+24, 0L); // TEXT relocation size
- putlong(ptr+28, 0L); // DATA relocation size
-
- sptr = ptr + 32 + dsize; // Set sptr to symbol table location
-
- putlong(sptr, 4L); // String offset of symbol1
- putlong(sptr+4, symtype); // Symbol type
- putlong(sptr+8, 0x00000000); // Symbol has no value (START)
- putlong(sptr+12, 4L + (sym2len-1)); // String offset of symbol2
- putlong(sptr+16, symtype); // Symbol type
- putlong(sptr+20, dsize); // Symbol is data size (END)
-
- sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
-
- putlong(sptr, sym1len + 4L); // Size of symbol table
-
- sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
-
- for(i = 0; i < (sym1len-1); i++) // Write symbol1 to string table
- sptr[i] = *sym1++;
- sptr += (sym1len-1); // Step past symbol string
- *sptr = '\0'; // Terminate symbol string
- sptr += 1; // Step past termination
- for(i = 0; i < (sym2len-1); i++) // Write symbol2 to string table
- sptr[i] = *sym2++;
- sptr += (sym2len-1); // Step past symbol string
- *sptr = '\0'; // Terminate symbol string
- sptr += 1; // Step past termination
-
- putlong(sptr, 0L); // Terminating long for object file
-
- return pladd(ptr,fname);
-}
-
+// Take an argument list and parse the command line
//
-// -------------------------------------------------------------------------------------------------
-// Takes a file name, gets in its image, puts it on plist. The image may already be in memory: if
-// so, the ptr arg is non-null. If so, the file is already closed. Note that the file is already
-// open (from dofile()). RETURNS a pointer to the OFILE structure for this file, so you can diddle
-// its flags (dofile sets O_USED for files on the command line).
-// -------------------------------------------------------------------------------------------------
-//
-
-int doobject(char *fname, int fd, char *ptr) {
- long size; // File size
-
- if(ptr == NULL) {
- size = FSIZE(fd); // Get size of input object file
- if((ptr = malloc(size)) == NULL) { // Allocate memory for file data
- printf("Out of memory while processing %s\n", fname);
- close(fd); // Close and error
- return(1);
- }
- if(read(fd, ptr, size) != size) { // Read in file data
- printf("File read error on %s\n", fname);
- close(fd); // Close, free memory and error
- free(ptr);
- return(1);
- }
-
- strcpy(obj_fname[obj_index], fname);
- obj_segsize[obj_index][0] = (getlong(ptr + 4) + secalign) & ~secalign;
- obj_segsize[obj_index][1] = (getlong(ptr + 8) + secalign) & ~secalign;
- obj_segsize[obj_index][2] = (getlong(ptr + 12) + secalign) & ~secalign;
- obj_index++;
-
- close(fd); // Close file
- }
-
- // Now add this image to the list of pending ofiles (plist)
- // This routine is shared by doinclude after it builds the image
- return(pladd(ptr, fname));
-}
+int doargs(int argc, char * argv[])
+{
+ int i = 1; // Iterator
+ int c; // Command line character
+ char * ifile, * isym; // File name and symbol name for -i
-//
-// --- Process In Outstanding Object Files ---------------------------------------------------------
-//
-
-int flush_handles(void) {
- int i; // Iterator
- char magic[4]; // Magic header number
- // unsigned test;
- for(i = 0; i < (int)hd; i++) { // Process all handles
- if(vflag == 1) { // Verbose mode information
- printf("Read file %s%s\n", name[i], hflag[i] ? " (include)" : "");
- }
- if(!hflag[i]) { // Attempt to read file magic number
- // OBJECT FILES
- if(read(handle[i],magic,4) != 4) {
- printf("Error reading file %s\n", name[i]);
- close(handle[i]); // Close file and error
- return(1);
- }
-
- lseek(handle[i], 0L, 0); // Reset to start of input file
-// test = getlong(magic); printf("Magic Number is 0x%08X\n", test);
- if(getlong(magic) == 0x00000107) { // Look for SMAC/MAC object files
- if(doobject(name[i], handle[i], 0L)) // Process input object file
- return(1);
- } else {
- printf("%s is not a supported object file\n", name[i]);
- close(handle[i]); // Close file and error
- return(1);
- }
- } else {
- // INCLUDE FILES
- // If hflag[i] is 1, include this in the data segment; if 2, put in in text segment
- if(doinclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i]-1))
- return(1);
- }
- }
-
- for(i = 0; i < (int)hd; i++) { // Free include, symbol & object handles
- free(name[i]);
- if(hflag[i]) {
- free(hsym1[i]);
- free(hsym2[i]);
- }
- }
-
- hd = 0; // Reset next handle indicator
-
- return(0); // Return
-}
+ // Parse through option switches & files
+ while (i < argc)
+ {
+ // Process command line switches
+ if (argv[i][0] == '-')
+ {
+ if (!argv[i][1])
+ {
+ printf("Illegal option argument: %s\n\n", argv[i]);
+ ShowHelp();
+ return 1;
+ }
-//
-// --- Load newargv with Pointers to Arguments Found in the Buffer ---------------------------------
-//
-
-int parse(char *buf, char *newargv[]) {
- int i = 1;
-
- if(vflag) {
- printf("begin parsing\n");
- }
- while(1) {
- while(*buf && strchr(",\t\n\r\14 ", *buf)) buf++;
-
- /* test for eof */
- if(*buf == '\0' || *buf == 26) {
- if(i == 0) {
- printf("No commands in command file\n");
- return(-1);
- } else {
- return(i);
- }
- }
-
- /* test for comment */
- if(*buf == '#') {
- /* found a comment; skip to next \n and start over */
- while(*buf && *buf != '\n') buf++;
- continue;
- }
-
- if(i == MAXARGS) {
- printf("Too many arguments in command file\n");
- return(-1);
- }
- newargv[i] = buf;
- while(!strchr(",\t\n\r\14 ", *buf)) {
- if(*buf == '\0' || *buf == 26) {
- printf("Finished parsing %d args\n", i);
- return(i);
- }
- buf++;
- }
- *buf++ = '\0';
- if(vflag) {
- printf("argv[%d] = \"%s\"\n",i,newargv[i]);
- }
- i++;
- }
-}
+ c = argv[i++][1]; // Get next character in command line
-//
-// --- Process in a Link Command File -----------------------------------------
-//
+ // Process command line switch
+ switch (c)
+ {
+ case '?': // Display usage information
+ case 'h':
+ case 'H':
+ ShowVersion();
+ ShowHelp();
+ return 1;
+ case 'a':
+ case 'A': // Set absolute linking on
+ if (aflag)
+ warn('a', 1);
+
+ if (i + 2 >= argc)
+ {
+ printf("Not enough arguments to -a\n");
+ return 1;
+ }
+
+ aflag = 1; // Set abs link flag
+
+ // Segment order is TEXT, DATA, BSS
+ // Text segment can be 'r' or a value
+ if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
+ {
+ ttype = -1; // TEXT segment is relocatable
+ }
+ else if ((*argv[i] == 'x' || *argv[i] == 'X'))
+ {
+ printf("Error in text-segment address: cannot be contiguous\n");
+ return 1;
+ }
+ else if (GetHexValue(argv[i], &tval))
+ {
+ printf("Error in text-segment address: %s is not 'r' or an address.", argv[i]);
+ return 1;
+ }
+
+ i++;
+
+ // Data segment can be 'r', 'x' or a value
+ if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
+ {
+ dtype = -1; // DATA segment is relocatable
+ }
+ else if ((*argv[i] == 'x' || *argv[i] == 'X'))
+ {
+ dtype = -2; // DATA follows TEXT
+ }
+ else if (GetHexValue(argv[i], &dval))
+ {
+ printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
+ return 1;
+ }
+
+ i++;
+
+ // BSS segment can be 'r', 'x' or a value
+ if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
+ {
+ btype = -1; // BSS segment is relocatable
+ }
+ else if ((*argv[i] == 'x' || *argv[i] == 'X'))
+ {
+ btype = -3; // BSS follows DATA
+ }
+ else if (GetHexValue(argv[i], &bval))
+ {
+ printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
+ return 1;
+ }
+
+ i++;
+ break;
+ case 'b':
+ case 'B': // Don't remove muliply defined locals
+ if (bflag)
+ warn('b', 1);
+
+ bflag = 1;
+ break;
+ case 'c':
+ case 'C': // Process a command file
+ if (i == argc)
+ {
+ printf("Not enough arguments to -c\n");
+ return 1;
+ }
+
+ if (docmdfile(argv[i++]))
+ {
+ return 1;
+ }
+
+ break;
+ case 'd':
+ case 'D': // Wait for "return" before exiting
+ if (dflag)
+ warn('d', 0);
+
+ dflag = 1;
+ waitflag = 1;
+ break;
+ case 'e':
+ case 'E': // Output COFF (absolute only)
+ cflag = 1;
+ break;
+ case 'g':
+ case 'G': // Output source level debugging
+ printf("\'g\' flag not currently implemented\n");
+ gflag = 0;
+ /*
+ if (gflag) warn('g', 1);
+ gflag = 1;
+ */
+ break;
+ case 'i':
+ case 'I': // Include binary file
+ if (i + 2 > argc)
+ {
+ printf("Not enough arguments to -i\n");
+ return 1;
+ }
+
+ ifile = argv[i++];
+ isym = argv[i++];
+
+ // handle -ii (No truncation)
+ if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
+ {
+ if (!cflag)
+ printf("warning: (-ii) COFF format output not specified\n");
+ }
+ // handle -i (Truncation)
+ else
+ {
+ if (strlen(isym) > 8)
+ isym[8] = '\0';
+ }
+
+ // Place include files in the DATA segment only
+ if (DoFile(ifile, DSTSEG_D, isym))
+ return 1;
+
+ break;
+ case 'l':
+ case 'L': // Add local symbols
+ if (lflag)
+ warn('l', 1);
+
+ lflag = 1;
+ break;
+ case 'm':
+ case 'M': // Produce load symbol map
+ if (mflag)
+ warn('m', 1);
+
+ mflag = 1;
+ break;
+ case 'n':
+ case 'N': // Output no header to .abs file
+ if (noheaderflag)
+ warn('n', 1);
+
+ noheaderflag = 1;
+ break;
+ case 'o':
+ case 'O': // Specify an output file
+ if (oflag)
+ warn('o', 1);
+
+ oflag = 1;
+
+ if (i >= argc)
+ {
+ printf("No output filename following -o switch\n");
+ return 1;
+ }
+
+ if (strlen(argv[i]) > FARGSIZE - 5)
+ {
+ printf("Output file name too long (sorry!)\n");
+ return 1;
+ }
+
+ strcpy(ofile, argv[i++]);
+ break;
+ case 'r':
+ case 'R': // Section alignment size
+ if (rflag)
+ warn('r', 1);
+
+ rflag = 1;
+
+ switch (argv[i-1][2])
+ {
+ case 'w': case 'W': secalign = 1; break; // Word alignment
+ case 'l': case 'L': secalign = 3; break; // Long alignment
+ case 'p': case 'P': secalign = 7; break; // Phrase alignment
+ case 'd': case 'D': secalign = 15; break; // Double phrase alignment
+ case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
+ default: secalign = 7; break; // Default phrase alignment
+ }
+
+ break;
+ case 's':
+ case 'S': // Output only global symbols
+ if (sflag)
+ warn('s', 1);
+
+ sflag = 1;
+ break;
+ case 'u':
+ case 'U': // Undefined symbols
+ uflag++;
+ break;
+ case 'v':
+ case 'V': // Verbose information
+ if (!vflag && !versflag)
+ {
+ ShowVersion();
+ }
+
+ vflag++;
+ break;
+ case 'w':
+ case 'W': // Show warnings flag
+ if (wflag)
+ warn('w', 1);
+
+ wflag = 1;
+ break;
+ case 'z':
+ case 'Z': // Suppress banner flag
+ if (zflag)
+ warn('z', 1);
+
+ zflag = 1;
+ break;
+ default:
+ printf("unknown option argument `%c'\n", c);
+ return 1;
+ }
+ }
+ else
+ {
+ // Not a switch, then process as a file
+ if (DoFile(argv[i++], 0, NULL))
+ return 1;
+ }
+ }
-int docmdfile(char * fname)
-{
- int fd; // File descriptor
- unsigned size; // Command file size
- char * ptr; // Pointer
- int newargc; // New argument count
- char * (*newargv)[]; // New argument value array
-
- if (vflag > 1)
- printf("docmdfile(%s)\n", fname); // Verbose information
-
- // Allocate memory for new argument values
- newargv = malloc((long)(sizeof(char *) * MAXARGS));
-
- if (!newargv)
- {
- printf("Out of memory.\n");
- return(1);
- }
-
- // Attempt to open and read in the command file
- if (fname)
- {
- if ((fd = open(fname, _OPEN_FLAGS)) < 0)
- {
- printf("Cannot open command file %s.\n", fname);
- return(1);
- }
-
- size = FSIZE(fd);
-
- if ((ptr = malloc(size + 1)) == NULL)
- {
- printf("Out of memory.\n");
- close(fd);
- return(1);
- }
-
- if (read(fd, ptr, size) != (int)size)
- {
- printf("Read error on command file %s.\n", fname);
- close(fd);
- return(1);
- }
-
- *(ptr + size) = 0; // Null terminate the buffer
- close(fd);
- }
- else
- {
- printf("No command filename specified\n");
- return(1);
- }
-
- // Parse the command file
- if ((newargc = parse(ptr, *newargv)) == -1)
- {
- return(1);
- }
-
- // Process the inputted flags
- if (doargs(newargc, *newargv))
- {
- printf("docmdfile: doargs returns TRUE\n");
- return(1);
- }
-
- free(ptr);
- free(newargv);
-
- return(0);
-}
+ if (!oflag && vflag)
+ {
+ strcpy(ofile, "output");
+ printf("Output file is %s[.ext]\n", ofile);
+ }
-//
-// --- Take an Argument List and Parse the Command Line -----------------------
-//
+ if (oflag && vflag)
+ printf("Output file is %s\n", ofile);
-int doargs(int argc, char * argv[])
-{
- int i = 1; // Iterator
- int c; // Command line character
- char * ifile, * isym; // File name and symbol name for -i
-
- while(i < argc)
- { // Parse through option switches & files
- if (argv[i][0] == '-')
- { // Process command line switches
- if (!argv[i][1])
- {
- printf("Illegal option argument: %s\n\n", argv[i]);
- display_help();
- return(1);
- }
-
- c = argv[i++][1]; // Get next character in command line
-
- switch (c)
- { // Process command line switch
- case '?': // Display usage information
- case 'h':
- case 'H':
- display_version();
- display_help();
- return(1);
- case 'a':
- case 'A': // Set absolute linking on
- if (aflag)
- warn('a', 1);
-
- if (i + 2 >= argc)
- {
- printf("Not enough arguments to -a\n");
- return(1);
- }
-
- aflag = 1; // Set abs link flag
- // Segment order is TEXT, DATA, BSS
- // Text segment can be 'r', 'x' or a value
- ttype = 0;
-
- if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
- {
- ttype = -1; // TEXT segment is relocatable
- }
- else if ((*argv[i] == 'x' || *argv[i] == 'X'))
- {
- printf("Error in text-segment address: cannot be contiguous\n");
- return(1);
- }
- else if ((ttype = 0), getval(argv[i], &tval))
- {
- printf("Error in text-segment address: %s is not 'r', 'x' or an address.", argv[i]);
- return(1);
- }
-
- i++;
- // Data segment can be 'r', 'x' or a value
- dtype = 0;
-
- if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
- {
- dtype = -1; // DATA segment is relocatable
- }
- else if ((*argv[i] == 'x' || *argv[i] == 'X'))
- {
- dtype = -2; // DATA follows TEXT
- }
- else if ((dtype = 0), getval(argv[i],&dval))
- {
- printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
- return(1);
- }
-
- i++;
- btype = 0;
-
- // BSS segment can be 'r', 'x' or a value
- if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
- {
- btype = -1; // BSS segment is relocatable
- }
- else if ((*argv[i] == 'x' || *argv[i] == 'X'))
- {
- btype = -3; // BSS follows DATA
- }
- else if ((btype = 0), getval(argv[i],&bval))
- {
- printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
- return(1);
- }
-
- i++;
- break;
- case 'b':
- case 'B': // Don't remove muliply defined locals
- if (bflag)
- warn('b', 1);
-
- bflag = 1;
- break;
- case 'c':
- case 'C': // Process a command file
- if (i == argc)
- {
- printf("Not enough arguments to -c\n");
- return(1);
- }
-
- if (docmdfile(argv[i++]))
- {
- return(1);
- }
-
- break;
- case 'd':
- case 'D': // Wait for "return" before exiting
- if (dflag)
- warn('d', 0);
-
- dflag = 1;
- waitflag = 1;
- break;
- case 'e':
- case 'E': // Output COFF (absolute only)
- cflag = 1;
- break;
- case 'g':
- case 'G': // Output source level debugging
- printf("\'g\' flag not currently implemented\n");
- gflag = 0;
- /*
- if(gflag) warn('g', 1);
- gflag = 1;
- */
- break;
- case 'i':
- case 'I': // Include binary file
- if (i + 2 > argc)
- {
- printf("Not enough arguments to -i\n");
- return(1);
- }
-
- ifile = argv[i++];
- isym = argv[i++];
-
- if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
- { // handle -ii (No truncation)
- if (!cflag)
- printf("warning: (-ii) COFF format output not specified\n");
- }
- else
- { // handle -i (Truncation)
- if (strlen(isym) > 7)
- isym[7] = '\0';
- }
-
- // Place include files in the DATA segment only
- if (dofile(ifile, DSTSEG_D, isym))
- return(1);
-
- break;
- case 'l':
- case 'L': // Add local symbols
- if (lflag)
- warn('l', 1);
-
- lflag = 1;
- break;
- case 'm':
- case 'M': // Produce load symbol map
- if (mflag)
- warn('m', 1);
-
- mflag = 1;
- break;
- case 'n':
- case 'N': // Output no header to .abs file
- if (noheaderflag)
- warn('n', 1);
-
- noheaderflag = 1;
- break;
- case 'o':
- case 'O': // Specify an output file
- if (oflag)
- warn('o', 1);
-
- oflag = 1;
-
- if (i >= argc)
- {
- printf("No output filename following -o switch\n");
- return(1);
- }
-
- if (strlen(argv[i]) > FARGSIZE - 5)
- {
- printf("Output file name too long (sorry!)\n");
- return(1);
- }
-
- strcpy(ofile, argv[i++]);
- break;
- case 'r':
- case 'R': // Section alignment size
- if (rflag)
- warn('r', 1);
-
- rflag = 1;
-
- switch (argv[i-1][2])
- {
- case 'w': case 'W': secalign = 1; break; // Word alignment
- case 'l': case 'L': secalign = 3; break; // Long alignment
- case 'p': case 'P': secalign = 7; break; // Phrase alignment
- case 'd': case 'D': secalign = 15; break; // Double phrase alignment
- case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
- default: secalign = 7; break; // Default phrase alignment
- }
-
- break;
- case 's':
- case 'S': // Output only global symbols
- if (sflag)
- warn('s', 1);
-
- sflag = 1;
- break;
- case 'v':
- case 'V': // Verbose information
- if (!vflag && !versflag)
- {
- display_version();
- }
-
- vflag++;
- break;
- case 'z':
- case 'Z': // Suppress banner flag
- if (zflag)
- warn('z', 1);
-
- zflag = 1;
- break;
- default:
- printf("unknown option argument `%c'\n", c);
- return(1);
- }
- }
- else
- { // Not a switch, then process as a file
- if (dofile(argv[i++], 0, NULL))
- return(1);
- }
-
- }
-
- if (!oflag && vflag)
- {
- strcpy(ofile, "output");
- printf("Output file is %s[.ext]\n", ofile);
- }
-
- if (oflag && vflag)
- printf("Output file is %s\n", ofile);
-
- if (sflag)
- lflag = 0;
-
- return 0; // No problems encountered
+ if (sflag)
+ lflag = 0;
+
+ // No problems encountered
+ return 0;
}
//
-// --- Display Version Information --------------------------------------------
+// Display version information
//
-void display_version(void)
+void ShowVersion(void)
{
if (displaybanner)// && vflag)
{
- printf("\nReboot's Linker for Atari Jaguar\n");
- printf("Copyright (c) 199x Allan K. Pratt, 2011 Reboot\n");
- printf("V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
+ printf(
+ " _\n"
+ " _ __| |_ ___\n"
+ "| '__| | '_ \\\n"
+ "| | | | | | |\n"
+ "|_| |_|_| |_|\n"
+ "\nReboot's Linker for Atari Jaguar\n"
+ "Copyright (c) 199x Allan K. Pratt, 2014-2017 Reboot\n"
+ "V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
}
}
//
-// --- Display Command Line Help -----------------------------------------------
+// Display command line help
//
-void display_help(void)
+void ShowHelp(void)
{
printf("Usage:\n");
printf(" %s [-options] file(s)\n", cmdlnexec);
printf(" -d wait for key after link\n");
printf(" -e output COF absolute file\n");
printf(" -g output source-level debugging\n");
- printf(" -i <fname> <label> incbin <fname> and set <label>\n");
+ printf(" -i <fname> <label> incbin <fname> and set <label> (trunc to 8 chars)\n");
+ printf(" -ii <fname> <label> incbin <fname> and set <label> (no truncation)\n");
printf(" -l add local symbols\n");
printf(" -m produce load symbols map\n");
- printf(" -n output no file header to .abs file\n");
+ printf(" -n output no file header to absolute file\n");
printf(" -o <fname> set output name\n");
printf(" -r<size> section alignment size\n");
printf(" w: word (2 bytes)\n");
printf(" p: phrase (8 bytes, default alignment)\n");
printf(" d: double phrase (16 bytes)\n");
printf(" q: quad phrase (32 bytes)\n");
- printf(" -s output only global symbols\n");
+ printf(" -s output only global symbols (supresses -l)\n");
+ printf(" -u allow unresolved symbols (experimental)\n");
printf(" -v set verbose mode\n");
+ printf(" -w show linker warnings\n");
printf(" -z suppress banner\n");
printf("\n");
}
//
-// --- Application Exit -------------------------------------------------------
+// Application exit
//
-void rln_exit(void)
+void ExitLinker(void)
{
char tempbuf[128];
// Wait for return key if requested
if (waitflag)
{
- printf("\nPress the <return> key to continue. ");
- fgets(tempbuf, 128, stdin);
+ printf("\nPress the [RETURN] key to continue. ");
+ char * c = fgets(tempbuf, 128, stdin);
}
exit(errflag);
}
-//
-// --- Determine Processor Endianess ------------------------------------------
-//
-int get_endianess(void)
-{
- int i = 1;
- char * p = (char *)&i;
-
- if (p[0] == 1)
- return 0; // LITTLE
-
- return 1; // BIG
-}
-
-
-//
-// --- Application Code Starts Here -------------------------------------------
-//
int main(int argc, char * argv[])
{
- char * s = NULL; // String pointer for "getenv"
- struct HREC * utemp; // Temporary hash record pointer
- struct OHEADER * header; // Pointer to output header structure
+ cmdlnexec = argv[0]; // Obtain executable name
+ char * s = getenv("RLNPATH"); // Attempt to obtain env variable
- endian = get_endianess(); // Get processor endianess
- cmdlnexec = argv[0]; // Obtain executable name
- s = getenv("RLNPATH");
+ if (s)
+ strcpy(libdir, s); // Store it if found
- if (s) // Attempt to obtain env variable
- strcpy(libdir, s); // Store it if found
+ // Initialize some vars
+ tval = dval = bval = 0;
+ ttype = dtype = btype = 0;
+ // Parse the command line
if (doargs(argc, argv))
- { // Parse the command line
+ {
errflag = 1;
- rln_exit();
+ ExitLinker();
}
if (!zflag && !vflag)
{
- display_version(); // Display version information
- versflag = 1; // We've dumped the version banner
+ ShowVersion(); // Display version information
+ versflag = 1; // We've dumped the version banner
}
- if (flush_handles())
- { // Process in specified files/objects
+ // Load in specified files/objects and add to processing list
+ if (ProcessFiles())
+ {
errflag = 1;
- rln_exit();
+ ExitLinker();
}
- if (dolist())
- { // Remove elements from unresolved list
+ // Work in items in processing list & deal with unresolved list
+ if (ProcessLists())
+ {
errflag = 1;
- rln_exit();
+ ExitLinker();
}
+ // Check that there is something to link
if (olist == NULL)
- { // Check that there is something to link
-// printf("No object files to link.\n\n");
-// errflag = 1;
- display_help();
- rln_exit();
+ {
+ ShowHelp();
+ ExitLinker();
}
+ // Report unresolved externals
if (unresolved != NULL)
- { // Report unresolved externals
+ {
printf("UNRESOLVED SYMBOLS\n");
+ // Don't list them if two -u's or more
if (uflag < 2)
- { // Don't list them if two -u's or more
- utemp = unresolved;
+ {
+ struct HREC * utemp = unresolved;
while (utemp != NULL)
{
- printf("\t%s (",utemp->h_sym);
- put_name(utemp->h_ofile);
- printf(")\n");
- utemp = utemp->h_next;
+ printf("\t%s (", utemp->h_sym);
+ WriteARName(utemp->h_ofile);
+ printf(")\n");
+ utemp = utemp->h_next;
}
}
if (!uflag)
{
errflag = 1;
- rln_exit();
+ ExitLinker();
}
}
- if ((header = make_ofile()) == NULL)
- { // Make one output file from input objs
+ // Make one output object from input objects
+ struct OHEADER * header = MakeOutputObject();
+
+ if (header == NULL)
+ {
errflag = 1;
- rln_exit();
+ ExitLinker();
}
+ // Partial linking
if (pflag)
- { // Partial linking
- printf("TO DO:Partial linking\n");
+ {
+ printf("TO DO: Partial linking\n");
errflag = 1;
}
+ // Relocatable linking
else if (!aflag)
- { // Relocatable linking
- printf("TO DO:Relocatable linking\n");
+ {
+ printf("TO DO: Relocatable linking\n");
errflag = 1;
}
+ // Absolute linking
else
- { // Absolute linking
+ {
if (vflag)
- {
- printf("Absolute linking ");
-
- if (cflag)
- printf("(COF)\n");
- else
- printf("(ABS)\n");
- }
+ printf("Absolute linking (%s)\n", (cflag ? "COF" : "ABS"));
if (vflag > 1)
- printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
+ printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
- if (write_ofile(header))
- errflag = 1;
+ if (WriteOutputFile(header))
+ errflag = 1;
}
- if (mflag) // Display the loaded symbols map
- if (write_map(header))
+ // Display the loaded symbols map
+ if (mflag)
+ if (ShowSymbolLoadMap(header))
errflag = 1;
+ // Display segment size summary
if (vflag)
- { // Display segment size summary
+ {
printf("\n");
printf("+---------+----------+----------+----------+\n");
printf("| Segment | TEXT | DATA | BSS |\n");
printf("+---------+----------+----------+----------+\n\n");
}
- free(header); // Free allocated memory
- rln_exit(); // Perform application exit
+ free(header);
+ ExitLinker();
}
+