-///////////////////////////////////////////////////////////////////////////////
+//
// RLN - Reboot's Linker for the Atari Jaguar Console System
// RLN.C - Application Code
// Copyright (C) 199x, Allan K. Pratt, 2011 Reboot & Friends
+//
#include "rln.h"
//
-// --- Get a Long Word from Memory --------------------------------------------
+// Get a Long Word from Memory
//
unsigned getlong(char * src)
{
//
-// --- Put a Long Word into Memory --------------------------------------------
+// Put a Long Word into Memory
//
void putlong(char * dest, unsigned val)
{
//
-// --- Get a Word from Memory -------------------------------------------------
+// Get a Word from Memory
//
int getword(char * src)
{
//
-// --- Put a Word into Memory -------------------------------------------------
+// Put a Word into Memory
//
void putword(char * dest, int val)
{
//
-// --- Obtain a File's Size ---------------------------------------------------
+// Obtain a File's Size
//
long FSIZE(int 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
if (ssidx == -1)
{
printf("dosym() : Cannot get object file segment size : %s\n", ofile->o_name);
- return(1);
+ return 1;
}
// Process each record in the symbol table
case 0x02000000: // Absolute value
break;
case T_TEXT: // TEXT segment
- if(type & 0x01000000) value = tbase + tsegoffset + value;
+ 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;
+ 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;
+ if (type & 0x01000000) value = bbase + bsegoffset + value;
else value = bbase + bsegoffset +
(value - (ofile->o_header.tsize + ofile->o_header.dsize));
putlong(symptr + 8, value);
if (islocal(type) || isglobal(type))
{
if ((index = ost_add(symend + index, type, value)) == -1)
- return(1);
+ return 1;
}
else
{
//
-// --- Free Up Hash Records ---------------------------------------------------
+// Free Up Hash Records
//
void hash_free(void)
{
- 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;
- }
- }
+ 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;
+ }
+ }
}
+
//
-// --- Add all Global and External Symbols to the Output Symbol Table ------------------------------
+// Add all Global and External Symbols to the Output Symbol Table
//
+long docommon(void)
+{
+ struct HREC * hptr; // Hash record pointer
+ int i; // Iterator
-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
- 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);
- }
- }
- }
- }
+ if (ost_add(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
+ return -1;
+ }
+ }
+ }
- return(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_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) {
+ 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) {
+ if ((oststr = malloc(OST_BLOCK)) == NULL) {
printf("OST memory allocation error (string).\n");
return(-1);
}
// 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) {
+ 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_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) {
+ 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);
}
}
// If this is a debug symbol and the include debug symbol flag (-g) is not set then do nothing
- if((type & 0xF0000000) && !gflag) {
+ 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)) ||
+ if (((ostresult != -1) && bflag && !(type & 0x01000000)) ||
((ostresult != -1) && gflag && (type & 0xF0000000)) || (ostresult == -1)) {
- if((type & 0xF0000000) == 0x40000000)
+ 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
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) {
+ 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);
}
}
- return(0); // not sure about this as it could affect return indices. needed to stop return error.
+ return 0; // not sure about this as it could affect return indices. needed to stop return error.
}
//
-// --- Return the Index of a Symbol in the Output Symbol Table -------------------------------------
+// Return the Index of a Symbol in the Output Symbol Table -------------------------------------
//
int ost_lookup(char *sym) {
int stro = 4; // Offset in string table
for(i = 0; i < ost_index; i++) {
- if(!strcmp(oststr+stro, sym)) {
+ if (!strcmp(oststr+stro, sym)) {
return(i+1);
} else {
stro += strlen(oststr+stro) + 1;
}
//
-// --- Add Unresolved Externs to the Output Symbol Table -------------------------------------------
+// Add Unresolved Externs to the Output Symbol Table -------------------------------------------
//
int dounresolved(void) {
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);
+ 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);
+ return 0;
}
// -------------------------------------------------------------------------------------------------
// 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) {
+ 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
+ if (vflag > 1) { // Verbose mode information
printf("reloc_segment(%s, TEXT) : No Relocation Data\n", ofile->o_name);
}
- return(0);
+ 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) {
+ 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
+ if (vflag > 1) { // Verbose mode information
printf("reloc_segment(%s, DATA) : No Relocation Data\n", ofile->o_name);
}
- return(0);
+ return 0;
}
// Verbose mode information
- if(vflag > 1) {
+ if (vflag > 1) {
printf("reloc_segment(%s, %s) : Processing Relocation Data\n",
ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
}
relocsize = ofile->o_header.absrel.reloc.tsize;
// Update pointers if DATA relocation records are being processed
- if(flag == T_DATA) {
+ 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;
relreloc = (rflg & 0x000000A0) ? 1 : 0; // Set relative relocation flag
// Additional processing required for global relocations
- if(glblreloc) {
+ 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.
// 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);
+ 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) {
+ 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;
+ 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);
+ if (!glblreloc) newdata = dbase + dataoffset + (olddata - ofile->o_header.tsize);
break;
case 0x00000800: // BSS segment relocation record
- if(!glblreloc) newdata = bbase + bssoffset +
+ if (!glblreloc) newdata = bbase + bssoffset +
(olddata - (ofile->o_header.tsize + ofile->o_header.dsize));
break;
}
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 (rflg & 0x01) newdata = _SWAPWORD(newdata);
putlong(sptr + addr, newdata);
}
// Update the COF segment offset allowing for the phrase padding.
- if(flag == T_TEXT) {
+ 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 {
bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
}
- return(0); // Return value, should always be zero
+ return 0; // Return value, should always be zero
}
//
void pathadd(char *s) {
char pathchar = 0;
- while(*s) {
- if(*s == '/' || *s == '\\') pathchar = *s;
+ while (*s) {
+ if (*s == '/' || *s == '\\') pathchar = *s;
s++;
}
s--;
- if(*s == pathchar) return;
+ if (*s == pathchar) return;
*++s = pathchar;
*++s = 0;
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) {
+ if ((tmpbuf = malloc((long)strlen(name) + strlen(libdir) + 3)) == NULL) {
printf("tryopen() : out of memory\n");
return(-1);
}
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) {
+ 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;
+ 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, ':')) {
+ 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) {
+ if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
+ if (!hasdot) {
strcat(tmpbuf, ".o");
- if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
+ if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok;
}
}
ok: // What more Atari label use - sigh!!!
- if((tmpbuf = realloc(tmpbuf, (long)strlen(tmpbuf) + 1)) == NULL) {
+ if ((tmpbuf = realloc(tmpbuf, (long)strlen(tmpbuf) + 1)) == NULL) {
printf("tryopen() : out of memory\n");
return(-1);
}
return(fd); // Return file descriptor
}
+
//
-// --- Archive File Use, Needs to be Removed -------------------------------------------------------
+// Archive File Use, Needs to be Removed
//
-
-void put_name(struct OFILE *p) {
- int flag = *(p->o_arname);
- printf("%s%s%s", flag ? p->o_arname : "", flag ? ":" : "", p->o_name);
+void put_name(struct OFILE * p)
+{
+ int flag = *(p->o_arname);
+ printf("%s%s%s", flag ? 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 flag, char * sym)
+{
+ int fd; // File descriptor
+ int temp; // Temporary storage
-int dofile(char *fname, int flag, char *sym) {
- int fd; // File descriptor
- int temp; // Temporary storage
+ // Verbose information
+ if (vflag)
+ {
+ printf("dofile() : `%s' %s", fname, flag ? "INCLUDE" : "NORMAL");
- if(vflag) { // Verbose information
- printf("dofile() : `%s' %s", fname, flag ? "INCLUDE" : "NORMAL");
- if(flag) printf(" symbol %s", sym);
- printf("\n");
- }
+ if (flag)
+ printf(" symbol %s", sym);
- 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);
- }
+ printf("\n");
+ }
- // 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;
- }
+ // Reached maximum file handles
+ if (hd == NHANDLES)
+ {
+ if (flush_handles()) return 1;
+ }
- // 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);
+ // Attempt to open input file
+ if ((fd = tryopen(&fname)) < 0)
+ {
+ printf("Cannot find input module %s\n", fname);
+ return 1;
+ }
- 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
+ // 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;
+
+ // Include files
+ if (flag)
+ {
+ 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;
+ }
- return(0); // No problems
+ hsym2[hd][99] = 'x';
+ }
+ else
+ {
+ hsym2[hd][temp] = 'x';
+ hsym2[hd][temp+1] = '\0';
+ }
+ }
+
+ hd++; // Increment next handle index
+ return 0; // No problems
}
//
-// --- Pad TEXT or DATA Segment to the Requested Boundary ---------------------
+// 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;
+ long padsize; // Number of pad bytes needed
+ int i; // Good 'ol iterator
+ char padarray[32]; // Array of padding bytes
+ char * padptr; // Pointer to array
- for(i=0; i<16; i++)
- {
- putword(padptr, value);
- padptr += 2;
- }
+ // Determine the number of padding bytes that are needed
+ padsize = (segsize + secalign) & ~secalign;
+ padsize = padsize - segsize;
- symoffset += padsize;
+ // Fill pad array if padding is required
+ if (padsize)
+ {
+ padptr = padarray;
- if (fwrite(padarray, padsize, 1, fd) != 1) // Write padding bytes
- return 1;
- }
+ 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
+ return 0; // All done
}
//
-// --- Write the Output File --------------------------------------------------
+// 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)
- }
+ 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
+
+ // Add correct output extension if none
+ if (strchr(ofile, '.') == NULL)
+ {
+ 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;
- }
+ fd = fopen(ofile, "wb"); // Attempt to open output file
- // Build the output file header
- if(cflag) { // Absolute (COF) header
- tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
+ if (!fd)
+ {
+ printf("Can't open output file %s\n", ofile); // Error opening output file
+ return 1;
+ }
- // 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
- }
+ // Build the output file header
+ // Absolute (COF) header
+ if (cflag)
+ {
+ tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
- // 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
- }
+ // 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
+ }
- // 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;
- }
+ // 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 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 header, but not if noheaderflag
+ // Absolute (ABS) header
+ if (!cflag)
+ {
+ if (!noheaderflag)
+ if (fwrite(himage, 36, 1, fd) != 1)
+ goto werror;
+ }
+ // Absolute (COF) header
+ else
+ {
+ if (fwrite(himage, 168, 1, fd) != 1)
+ goto werror;
+ }
- // 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;
- }
- }
+ // Write the TEXT segment of each object file
+ for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
+ {
+ osize = otemp->o_header.tsize;
-if(!noheaderflag) {
+ // Write only if segment has size
+ if (osize)
+ {
+ if (vflag > 1)
+ printf("Writing TEXT Segment of %s\n", otemp->o_name);
- // 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
- }
- }
+ if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
+ goto werror;
-}
+ // Pad to required alignment boundary
+ if (segmentpad(fd, osize, 0x0000))
+ goto werror;
- // 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 :)
+ symoffset += osize;
+ }
+ }
- printf("Write error on output file %s\n", ofile);
- fclose(fd); // Try to close output file anyway
- return(1);
+ // 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 (segmentpad(fd, osize, 0))
+ goto werror;
+
+ symoffset += osize;
+ }
+ }
+
+ if (!noheaderflag)
+ {
+ // 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 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);
+
+ // 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("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
+ }
+ }
+ }
+
+ // 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;
}
+
//
-// --- Display the Symbol Load Map -----------------------------------------------------------------
+// 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;
+ }
-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
+ 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;
- }
+ // 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;
+ // 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;
- }
- }
+ // 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");
- }
+ printf("\n\n");
+ }
- return(0); // All done
+ return 0; // All done
}
//
-// --- Convert ASCII to Hexadecimal -------------------------------------------
+// Convert ASCII to Hexadecimal
//
//int atolx(char * string, long * value)
int atolx(char * string, int * value)
//
-// ----------------------------------------------------------------------------
// 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);
+ 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'.
-// ----------------------------------------------------------------------------
//
struct OHEADER * make_ofile()
{
- 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
- }
+ 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
- // 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);
- }
- }
+ textsize = datasize = bsssize = 0; // Initialise cumulative segment sizes
- // 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;
+ // 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
- // 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
+ while (otemp != NULL)
+ {
+ // UNUSED !!!!!
+ if (!(otemp->o_flags & O_ARCHIVE))
+ {
+ 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;
+
+ // Do rest only for non-ARCHIVE markers
+ if (!(otemp->o_flags & O_ARCHIVE))
+ {
+ 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
+ // 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);
+ return (ret ? (unsigned)NULL : header);
}
//
-// --- Add Symbol to Hash List ------------------------------------------------
+// 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;
+ struct HREC *htemp; // Temporary hash record pointer
+ int i;
- if((htemp = new_hrec()) == NULL) { // Attempt to allocate new hash record
- printf("Out of memory\n");
- return 1;
- }
+ // Attempt to allocate new hash record
+ if ((htemp = new_hrec()) == NULL)
+ {
+ printf("Out of memory\n");
+ return 1;
+ }
- for(i = 0; i < SYMLEN; i++) htemp->h_sym[i] = '\0';
+ for(i=0; i<SYMLEN; i++)
+ htemp->h_sym[i] = '\0';
- strcpy(htemp->h_sym, sym); // Populate hash record
- htemp->h_ofile = ofile;
- htemp->h_value = value;
- htemp->h_type = type;
+ strcpy(htemp->h_sym, sym); // Populate hash record
+ htemp->h_ofile = ofile;
+ htemp->h_value = value;
+ htemp->h_type = type;
- htemp->h_next = *hptr; // Update hash record pointers
- *hptr = htemp;
+ htemp->h_next = *hptr; // Update hash record pointers
+ *hptr = htemp;
- return(0);
+ return 0;
}
//
-// --- Add Symbol to the Unresolved Symbols Hash Table ------------------------
+// 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);
+ if (vflag > 1)
+ printf("add_unresolved(%s,%s)\n", sym, ofile->o_name);
- return add_to_hlist(&unresolved, sym, ofile, 0L, 0);
+ return add_to_hlist(&unresolved, sym, ofile, 0L, 0);
}
//
-// --- Generate and Return Hash Value -----------------------------------------
+// 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);
+ 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;
}
//
-// --- Lookup a Symbol in the Hash Table --------------------------------------
+// Lookup a Symbol in the Hash Table
//
struct HREC * lookup(char * sym)
{
- struct HREC * hptr = htable[dohash(sym)]; // Hash index to record based on sym
- char symbol[SYMLEN]; // Temporary symbol storage
+ struct HREC * hptr = htable[dohash(sym)]; // Hash index to record based on sym
+ char symbol[SYMLEN]; // Temporary symbol storage
- memset(symbol, 0, SYMLEN); // Clean string for comparison
- strcpy(symbol, sym);
+ memset(symbol, 0, SYMLEN); // Clean string for comparison
+ strcpy(symbol, sym);
- while (hptr != NULL)
- {
- if (symcmp(symbol, hptr->h_sym))
- return hptr;
+ while (hptr != NULL)
+ {
+ if (symcmp(symbol, hptr->h_sym))
+ return hptr;
- hptr = hptr->h_next; // Return hash pointer if found
- }
+ hptr = hptr->h_next; // Return hash pointer if found
+ }
- return NULL; // Not found in hash table
+ return NULL; // Not found in hash table
}
//
-// --- Add Symbol to the Hash Table -------------------------------------------
+// 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"));
- }
+ struct HREC * hptr;
+ int flag = !iscommon(type);
- if ((hptr = lookup(sym)) == NULL)
- {
- return(add_to_hlist(&htable[dohash(sym)], sym, ofile, value, 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"));
+ }
- // 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");
- }
+ if ((hptr = lookup(sym)) == NULL)
+ {
+ return add_to_hlist(&htable[dohash(sym)], sym, ofile, value, type);
+ }
- 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");
- }
+ // 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");
+ }
- 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);
+ 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");
+ }
- putword(sym + 8, ABST_EXTERN);
- }
- else
- { // They're both common
- if (hptr->h_value < value)
- {
- hptr->h_value = value;
- hptr->h_ofile = ofile;
- }
- }
+ 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);
+ return 0;
}
//
struct HREC *hptr; // Hash record pointer
char symbol[SYMLEN];
- if(vflag > 1)
+ 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
sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
- while(nsymbols) {
+ 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
+ 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
+ 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
+ } else if (add_unresolved(symbol, Ofile)) { // Otherwise add to unresolved list
+ return 1; // Error if addition failed
}
}
}
nsymbols--; // Decrement num of symbols to process
}
- return(0); // Success loading symbols
+ return 0; // Success loading symbols
}
//
-// --- Process Object File for Symbols -------------------------------------------------------------
+// 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
+ if ((Ofile = new_ofile()) == NULL) { // Allocate memory for object record ptr
printf("Out of memory processing %s\n",fname);
- return(1);
+ 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
+ if (strlen(temp) > FNLEN - 1) { // Check filename length
printf("File name too long: %s\n", temp);
- return(1);
+ return 1;
}
- if(strlen(aname) > FNLEN - 1) { // Check archive name length
+ if (strlen(aname) > FNLEN - 1) { // Check archive name length
printf("Archive name too long: %s\n", aname);
- return(1);
+ return 1;
}
strcpy(Ofile->o_name, temp); // Store filename
strcpy(Ofile->o_arname, aname); // Store archive name
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)) {
+ if (!(flags & O_ARCHIVE)) {
Ofile->o_header.magic = getlong(ptr);
Ofile->o_header.tsize = getlong(ptr+4);
Ofile->o_header.dsize = getlong(ptr+8);
// Round BSS off to alignment boundary
Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
- if(Ofile->o_header.dsize & 7) {
+ 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)) {
+ 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);
+ return 1;
}
- if(add_symbols(Ofile)) return(1);
+ if (add_symbols(Ofile)) return 1;
}
// Add this file to the olist
- if(olist == NULL)
+ if (olist == NULL)
olist = Ofile;
else
olast->o_next = Ofile;
olast = Ofile;
- return(0);
+ return 0;
}
+
//
-// --- Remove Elements from Unresolved List which are Resolvable -----------------------------------
+// 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
-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
+ // Process object file list
+ while (plist != NULL)
+ {
+ if (doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags))
+ return 1;
- 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);
- }
+ 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;
- }
- }
+ // Process unresolved list
+ for(uptr=unresolved; uptr!=NULL; )
+ {
+ 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);
+ return 0;
}
+
//
-// --- Extract Filename from Path ------------------------------------------------------------------
+// Extract Filename from Path
//
+char * path_tail(char * name)
+{
+ char * temp = max(strrchr(name,'/'), max(strrchr(name,':'), strrchr(name, 92)));
-char *path_tail(char *name) {
- char *temp; // Temporary pointer
+ if (temp == NULL)
+ temp = (name - 1);
- temp = max(strrchr(name,'/'), max(strrchr(name,':'), strrchr(name, 92)));
- if(temp == NULL) temp = (name - 1);
- return(temp + 1);
+ return temp + 1;
}
+
//
-// --- Add Input File to Processing List -----------------------------------------------------------
+// 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;
+ }
-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);
- }
+ 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
+ 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
+ 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.
+
+//
+// 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
// 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;
-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;
+ // Use calloc so the header & fixups initialize to zero
+ // Allocate object image memory
+ if ((ptr = calloc(size, 1L)) == NULL)
+ {
+ printf("Out of memory while including %s\n", fname);
+ close(handle);
+ return 1;
+ }
- fsize = FSIZE(handle); // Get size of include file
- dsize = (fsize+secalign) & ~secalign; // Round up to a alignment boundary
+ // 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;
+ }
- sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
- sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
+ close(handle); // Close file
- size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
+ strcpy(obj_fname[obj_index], path_tail(fname));
- // 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);
- }
+ // Build this image's dummy header
+ putlong(ptr, 0x00000107); // Magic number
- 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
+ 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;
+ }
-
- 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
- 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
- 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
+ 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
- return pladd(ptr,fname);
+ 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);
}
+
//
-// -------------------------------------------------------------------------------------------------
-// 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).
-// -------------------------------------------------------------------------------------------------
+// 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
-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);
- }
+ if (ptr == NULL)
+ {
+ size = FSIZE(fd); // Get size of input object file
+
+ // Allocate memory for file data
+ if ((ptr = malloc(size)) == NULL)
+ {
+ printf("Out of memory while processing %s\n", fname);
+ close(fd); // Close and error
+ return 1;
+ }
- strcpy(obj_fname[obj_index], path_tail(fname)); // SCPCD : get the name of the file instead of all pathname
- 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++;
+ // Read in file data
+ if (read(fd, ptr, size) != size)
+ {
+ printf("File read error on %s\n", fname);
+ close(fd); // Close, free memory and error
+ free(ptr);
+ return 1;
+ }
- close(fd); // Close file
- }
+ strcpy(obj_fname[obj_index], path_tail(fname)); // SCPCD : get the name of the file instead of all pathname
+ 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++;
- // 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));
+ 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);
}
+
//
-// --- Process In Outstanding Object Files ---------------------------------------------------------
+// Process In Outstanding Object Files
//
-
-int flush_handles(void) {
+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
+
+ 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
+ if (!hflag[i]) { // Attempt to read file magic number
// OBJECT FILES
- if(read(handle[i],magic,4) != 4) {
+ if (read(handle[i],magic,4) != 4) {
printf("Error reading file %s\n", name[i]);
close(handle[i]); // Close file and error
- return(1);
+ 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);
+ 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);
+ 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);
+ 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]) {
+ if (hflag[i]) {
free(hsym1[i]);
free(hsym2[i]);
}
hd = 0; // Reset next handle indicator
- return(0); // Return
+ return 0; // Return
}
//
-// --- Load newargv with Pointers to Arguments Found in the Buffer ---------------------------------
+// Load newargv with Pointers to Arguments Found in the Buffer ---------------------------------
//
int parse(char *buf, char *newargv[]) {
int i = 1;
- if(vflag) {
+ if (vflag) {
printf("begin parsing\n");
}
- while(1) {
- while(*buf && strchr(",\t\n\r\14 ", *buf)) buf++;
+ while (1) {
+ while (*buf && strchr(",\t\n\r\14 ", *buf)) buf++;
/* test for eof */
- if(*buf == '\0' || *buf == 26) {
- if(i == 0) {
+ if (*buf == '\0' || *buf == 26) {
+ if (i == 0) {
printf("No commands in command file\n");
return(-1);
} else {
}
/* test for comment */
- if(*buf == '#') {
+ if (*buf == '#') {
/* found a comment; skip to next \n and start over */
- while(*buf && *buf != '\n') buf++;
+ while (*buf && *buf != '\n') buf++;
continue;
}
- if(i == MAXARGS) {
+ 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) {
+ 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) {
+ if (vflag) {
printf("argv[%d] = \"%s\"\n",i,newargv[i]);
}
i++;
}
//
-// --- Process in a Link Command File -----------------------------------------
+// Process in a Link Command File -----------------------------------------
//
int docmdfile(char * fname)
if (!newargv)
{
printf("Out of memory.\n");
- return(1);
+ return 1;
}
// Attempt to open and read in the command file
if ((fd = open(fname, _OPEN_FLAGS)) < 0)
{
printf("Cannot open command file %s.\n", fname);
- return(1);
+ return 1;
}
size = FSIZE(fd);
{
printf("Out of memory.\n");
close(fd);
- return(1);
+ return 1;
}
if (read(fd, ptr, size) != (int)size)
{
printf("Read error on command file %s.\n", fname);
close(fd);
- return(1);
+ return 1;
}
*(ptr + size) = 0; // Null terminate the buffer
else
{
printf("No command filename specified\n");
- return(1);
+ return 1;
}
// Parse the command file
if ((newargc = parse(ptr, *newargv)) == -1)
{
- return(1);
+ return 1;
}
// Process the inputted flags
if (doargs(newargc, *newargv))
{
printf("docmdfile: doargs returns TRUE\n");
- return(1);
+ return 1;
}
free(ptr);
free(newargv);
- return(0);
+ return 0;
}
//
-// --- Take an Argument List and Parse the Command Line -----------------------
+// Take an Argument List and Parse the Command Line -----------------------
//
int doargs(int argc, char * argv[])
int c; // Command line character
char * ifile, * isym; // File name and symbol name for -i
- while(i < argc)
+ while (i < argc)
{ // Parse through option switches & files
if (argv[i][0] == '-')
{ // Process command line switches
{
printf("Illegal option argument: %s\n\n", argv[i]);
display_help();
- return(1);
+ return 1;
}
c = argv[i++][1]; // Get next character in command line
case 'H':
display_version();
display_help();
- return(1);
+ return 1;
case 'a':
case 'A': // Set absolute linking on
if (aflag)
if (i + 2 >= argc)
{
printf("Not enough arguments to -a\n");
- return(1);
+ return 1;
}
aflag = 1; // Set abs link flag
else if ((*argv[i] == 'x' || *argv[i] == 'X'))
{
printf("Error in text-segment address: cannot be contiguous\n");
- return(1);
+ 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);
+ return 1;
}
i++;
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);
+ return 1;
}
i++;
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);
+ return 1;
}
i++;
if (i == argc)
{
printf("Not enough arguments to -c\n");
- return(1);
+ return 1;
}
if (docmdfile(argv[i++]))
{
- return(1);
+ return 1;
}
break;
printf("\'g\' flag not currently implemented\n");
gflag = 0;
/*
- if(gflag) warn('g', 1);
+ if (gflag) warn('g', 1);
gflag = 1;
*/
break;
if (i + 2 > argc)
{
printf("Not enough arguments to -i\n");
- return(1);
+ return 1;
}
ifile = argv[i++];
// Place include files in the DATA segment only
if (dofile(ifile, DSTSEG_D, isym))
- return(1);
+ return 1;
break;
case 'l':
if (i >= argc)
{
printf("No output filename following -o switch\n");
- return(1);
+ return 1;
}
if (strlen(argv[i]) > FARGSIZE - 5)
{
printf("Output file name too long (sorry!)\n");
- return(1);
+ return 1;
}
strcpy(ofile, argv[i++]);
break;
default:
printf("unknown option argument `%c'\n", c);
- return(1);
+ return 1;
}
}
else
{ // Not a switch, then process as a file
if (dofile(argv[i++], 0, NULL))
- return(1);
+ return 1;
}
}
//
-// --- Display Version Information --------------------------------------------
+// Display Version Information --------------------------------------------
//
void display_version(void)
{
//
-// --- Display Command Line Help -----------------------------------------------
+// Display Command Line Help -----------------------------------------------
//
void display_help(void)
{
//
-// --- Application Exit -------------------------------------------------------
+// Application Exit -------------------------------------------------------
//
void rln_exit(void)
{
//
-// --- Determine Processor Endianess ------------------------------------------
+// Determine Processor Endianess ------------------------------------------
//
int get_endianess(void)
{
//
-// --- Application Code Starts Here -------------------------------------------
+// Application Code Starts Here -------------------------------------------
//
int main(int argc, char * argv[])
{
projects / rln / commitdiff