X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rln;a=blobdiff_plain;f=rln.c;h=1f09e61348b0b933ffab239f70612040e214cf91;hp=e41042fb6b7079da3c32e6fd347b8a64d7224c46;hb=e1ddda6e4088b0f201fb3524909df29c8c3a3477;hpb=ff28769b66909bc028d0b99ee8918305bc649348 diff --git a/rln.c b/rln.c index e41042f..1f09e61 100644 --- a/rln.c +++ b/rln.c @@ -21,8 +21,8 @@ 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 pflag, uflag, wflag = 1; // 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 @@ -36,26 +36,26 @@ 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 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 +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 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 +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 +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 @@ -75,7 +75,7 @@ unsigned getlong(char * src) { unsigned temp; char * out; - + out = (char *)&temp; if (endian == 1) @@ -158,201 +158,210 @@ long FSIZE(int fd) // 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; - } + 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]; - } + 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; - } + 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; - } + // 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 - // 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])) + // 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) { - ssidx = j; // Symbol object filename - break; - } + printf("dosym() : Cannot determine symbol : %s\n", sym); + return 1; + } - 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; - } + // 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; + } - type = hptr->h_type; // Update type with global type + tsegoffset += obj_segsize[j][0]; // Accumulate segment sizes + dsegoffset += obj_segsize[j][1]; + bsegoffset += obj_segsize[j][2]; + } - if (type == 0x03000000) - type = 0x02000000; // Reset external flag if absolute + if (ssidx == -1) + { + printf("dosym() : Cannot get object file segment size : %s\n", + ofile->o_name); + return 1; + } - // 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) + 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) { - 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; - } - } - } + 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; + // 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)jo_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; - } - } + 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; - // 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; - } - } - } + 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; + dosymi++; // Increment dosym() processsing + return 0; } @@ -378,9 +387,9 @@ void hash_free(void) } -// +// // Add all Global and External Symbols to the Output Symbol Table -// +// long docommon(void) { struct HREC * hptr; // Hash record pointer @@ -397,7 +406,7 @@ long docommon(void) if (ost_add(hptr->h_sym, hptr->h_type, hptr->h_value) == -1) return -1; - } + } } } @@ -406,363 +415,472 @@ long docommon(void) // -// Add a Symbol's Name, Type, and Value to the OST. +// 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 + 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); + 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 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; + } - // 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 - } - } + 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); - return 0; // not sure about this as it could affect return indices. needed to stop return error. + 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 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 i; // Iterator + int stro = 4; // Offset in string table -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; - } - } + for(i=0; ih_sym, T_EXT, 0L) == -1) + return 1; +printf("dounresolved(): added %s\n",hptr->h_sym); + htemp = hptr->h_next; // Temporarily get ptr to next record + free(hptr); // Free current record + hptr = htemp; // Make next record ptr, current + } - 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; + 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); +// +// 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) + { + // TEXT segment size plus padding + pad = ((ofile->o_header.tsize+secalign) & ~secalign); + textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize)); - // Obtain pointer to start of symbols - symbols = symtab + ofile->o_header.ssize; + if (vflag > 1) + printf("reloc_segment(%s, TEXT) : No Relocation Data\n", ofile->o_name); - // Obtain pointer to start of TEXT segment - sptr = ofile->o_image + 32; + return 0; + } - // Obtain pointer to start of TEXT relocation records - rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize); + // 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) + { + // 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)); - relocsize = ofile->o_header.absrel.reloc.tsize; + if (vflag > 1) + printf("reloc_segment(%s, DATA) : No Relocation Data\n", ofile->o_name); - // 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; - } + return 0; + } - // 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); - } + // Verbose mode information + if (vflag > 1) + { + printf("reloc_segment(%s, %s) : Processing Relocation Data\n", + ofile->o_name, flag == T_DATA ? "DATA" : "TEXT"); + } - // 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); + // 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); - putlong(sptr + addr, newdata); + // Obtain pointer to start of symbols + symbols = symtab + ofile->o_header.ssize; - } - else if (relreloc) { - putword(sptr + addr, newdata - tbase - addr - ofile->o_tbase); - } + // Obtain pointer to start of TEXT segment + sptr = ofile->o_image + 32; - rptr += 8; // Point to the next relocation record - } + // Obtain pointer to start of TEXT relocation records + rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize); - // 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)); - } + 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 + + // 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 +//AARRRGGGGHHHHH! does the else belong to the 1st 'if' or the 2nd? +// can we trust the indention to tell the truth here??? +// Braces were not here, so if something breaks, try pairing the else to the 1st 'if'... + if (!glblreloc) + { + if (flag == T_TEXT) // Is this a TEXT section record? + newdata = tbase + textoffset + olddata; + else + newdata = tbase + dataoffset + olddata; // Nope, must be DATA section + } + + break; + case 0x00000600: // DATA segment relocation record + if (!glblreloc) + newdata = dbase + dataoffset + (olddata - ofile->o_header.tsize); - return 0; // Return value, should always be zero + 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); + } + + // Shamus: Let's output some info to aid in debugging this crap + if (vflag) + { + printf("reloc_segment(%d): %s, $%08X: $%08X => $%08X\n",i, (glblreloc ? sym : "(LOCAL)"), addr, olddata, getlong(sptr + addr)); + } + + rptr += 8; // Point to the next relocation record + } + + // Update the COF segment offset allowing for the phrase padding. + if (flag == T_TEXT) + { + // TEXT segment plus padding + pad = ((ofile->o_header.tsize + secalign) & ~secalign); + textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize)); + } + else + { + // DATA segment plus padding + pad = ((ofile->o_header.dsize + secalign) & ~secalign); + dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize)); + // BSS segment plus padding + pad = ((ofile->o_header.bsize + secalign) & ~secalign); + bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize)); + } + + // Return value, should always be zero + return 0; } + // -// ------------------------------------------------------------------------------------------------- -// Add a path character to the end of string 's' if it doesn't already end with one. -// The last occurrance of '/' or '\\' in the string is assumed to be the path character. -// ------------------------------------------------------------------------------------------------- +// Add a path character to the end of string 's' if it doesn't already end with +// one. The last occurrance of '/' or '\\' in the string is assumed to be the +// path character. // +void pathadd(char * s) +{ + // And hope to God that there's enough space in the buffer... + char pathchar = 0; -void pathadd(char *s) { - char pathchar = 0; + while (*s) + { + if (*s == '/' || *s == '\\') + pathchar = *s; - while (*s) { - if (*s == '/' || *s == '\\') pathchar = *s; - s++; - } - s--; - if (*s == pathchar) return; + s++; + } - *++s = pathchar; - *++s = 0; + s--; + + if (*s == pathchar) + return; + + *++s = pathchar; + *++s = 0; } + // -// ------------------------------------------------------------------------------------------------- -// Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the handle of the file -// successfully opened. p_name is updated to point to a malloc()'ed string which is the name which -// actually got opened. p_name will return unchanged if the file can't be found. -// ------------------------------------------------------------------------------------------------- +// Try to open "name", "name.o", "${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 -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; + } - // 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; - } + strcpy(tmpbuf, name); + hasdot = ((lastdot = strrchr(tmpbuf, '.')) > strrchr(tmpbuf, '/')) + && (lastdot > strrchr(tmpbuf, '\\')); - // 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; - } - } + 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 - return(-1); // Couldn't open file at all + 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) { - printf("tryopen() : out of memory\n"); - return(-1); - } - *p_name = tmpbuf; - - return(fd); // Return file descriptor + // 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 + +// What more Atari label use - sigh!!! +ok: + 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 } @@ -810,7 +928,7 @@ int dofile(char * fname, int flag, char * sym) return 1; } - // The file is open; save its info in the handle and name arrays + // 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; @@ -820,15 +938,15 @@ int dofile(char * fname, int flag, char * sym) { temp = strlen(sym); // Get symbol length - // 100 chars is max length of a symbol + // 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 + // 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) { @@ -917,15 +1035,18 @@ int write_ofile(struct OHEADER * header) // 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) + 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; } @@ -936,7 +1057,7 @@ int write_ofile(struct OHEADER * header) { tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets - // Process each object file segment size to obtain a cumulative segment size for both + // 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++) { @@ -962,11 +1083,11 @@ int write_ofile(struct OHEADER * header) 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 + 40, tbase ); // @TEXT putlong(himage + 44, dbase ); // @DATA // Build the TEXT SEC_HDR - putlong(himage + 48, 0x2E746578 ); + putlong(himage + 48, 0x2E746578 ); putlong(himage + 52, 0x74000000 ); // ".text" putlong(himage + 56, tbase ); // TEXT START putlong(himage + 60, tbase ); // TEXT START @@ -978,7 +1099,7 @@ int write_ofile(struct OHEADER * header) putlong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT // Build the DATA SEC_HDR - putlong(himage + 88, 0x2E646174 ); + putlong(himage + 88, 0x2E646174 ); putlong(himage + 92, 0x61000000 ); // ".data" putlong(himage + 96, dbase ); // DATA START putlong(himage + 100, dbase ); // DATA START @@ -990,7 +1111,7 @@ int write_ofile(struct OHEADER * header) putlong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA // Build the BSS SEC_HDR - putlong(himage + 128, 0x2E627373 ); + putlong(himage + 128, 0x2E627373 ); putlong(himage + 132, 0x00000000 ); // ".bss" putlong(himage + 136, bbase ); // BSS START putlong(himage + 140, bbase ); // BSS START @@ -1012,7 +1133,7 @@ int write_ofile(struct OHEADER * header) 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 + 18, 0x00000000 ); // putlong(himage + 22, tbase ); // TEXT base address putword(himage + 26, 0xFFFF ); // Flags (?) putlong(himage + 28, dbase ); // DATA base address @@ -1026,13 +1147,13 @@ int write_ofile(struct OHEADER * header) if (!cflag) { if (!noheaderflag) - if (fwrite(himage, 36, 1, fd) != 1) + if (fwrite(himage, 36, 1, fd) != 1) goto werror; } // Absolute (COF) header else { - if (fwrite(himage, 168, 1, fd) != 1) + if (fwrite(himage, 168, 1, fd) != 1) goto werror; } @@ -1047,11 +1168,11 @@ int write_ofile(struct OHEADER * header) if (vflag > 1) printf("Writing TEXT Segment of %s\n", otemp->o_name); - if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1) + if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1) goto werror; // Pad to required alignment boundary - if (segmentpad(fd, osize, 0x0000)) + if (segmentpad(fd, osize, 0x0000)) goto werror; symoffset += osize; @@ -1073,7 +1194,7 @@ int write_ofile(struct OHEADER * header) goto werror; // Pad to required alignment boundary - if (segmentpad(fd, osize, 0)) + if (segmentpad(fd, osize, 0)) goto werror; symoffset += osize; @@ -1095,8 +1216,8 @@ int write_ofile(struct OHEADER * header) // 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 + // 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 @@ -1150,7 +1271,7 @@ int write_ofile(struct OHEADER * header) } } - // Close the file + // Close the file if (fclose(fd)) { printf("Close error on output file %s\n",ofile); @@ -1183,13 +1304,13 @@ int write_map(struct OHEADER * header) printf("LOAD MAP\n\n"); - // Outer loop for each of the symbol areas to map out; + // 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) { @@ -1208,12 +1329,12 @@ int write_map(struct OHEADER * header) 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; + c = 0; } // If local symbols not included and the type is local then go to next symbol record @@ -1324,7 +1445,7 @@ struct OHEADER * make_ofile() textsize = datasize = bsssize = 0; // Initialise cumulative segment sizes - // For each object file, accumulate the sizes of the segments but remove those + // 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 @@ -1359,9 +1480,9 @@ struct OHEADER * make_ofile() 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; + textsize += (otemp->o_header.tsize + secalign) & ~secalign; + datasize += (otemp->o_header.dsize + secalign) & ~secalign; + bsssize += (otemp->o_header.bsize + secalign) & ~secalign; oprev = otemp; } } @@ -1386,7 +1507,7 @@ struct OHEADER * make_ofile() ost_add("_BSS_E", 0x09000000, tval + textsize + datasize + bsssize); } else - { + { // BSS is independant of DATA bbase = bval; ost_add("_BSS_E", 0x09000000, bval + bsssize); @@ -1412,9 +1533,9 @@ struct OHEADER * make_ofile() } } - // Place each unresolved symbol in the output symbol table + // Place each unresolved symbol in the output symbol table if (dounresolved()) - return NULL; + return NULL; tptr = 0; // Initialise base addresses dptr = 0; @@ -1433,26 +1554,23 @@ struct OHEADER * make_ofile() { 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; + 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)) + + // 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; @@ -1478,26 +1596,28 @@ struct OHEADER * make_ofile() 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 + // 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 + 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 + hash_free(); // Done with global symbol hash tables return (ret ? (unsigned)NULL : header); } @@ -1506,9 +1626,9 @@ struct OHEADER * make_ofile() // // Add Symbol to Hash List // -int add_to_hlist(struct HREC **hptr, char *sym, struct OFILE *ofile, long value, int type) +int add_to_hlist(struct HREC ** hptr, char * sym, struct OFILE * ofile, long value, int type) { - struct HREC *htemp; // Temporary hash record pointer + struct HREC * htemp; // Temporary hash record pointer int i; // Attempt to allocate new hash record @@ -1568,7 +1688,8 @@ struct HREC * lookup(char * sym) while (hptr != NULL) { - if (symcmp(symbol, hptr->h_sym)) + // if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch + if (strcmp(symbol,hptr->h_sym)==0) return hptr; hptr = hptr->h_next; // Return hash pointer if found @@ -1597,10 +1718,11 @@ int hash_add(char * sym, long type, long value, struct OFILE * ofile) 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 + // Mismatch: global came first; warn and keep the global one if (wflag) { printf("Warning: %s: global from ",sym); @@ -1615,7 +1737,7 @@ int hash_add(char * sym, long type, long value, struct OFILE * ofile) } else if (iscommon(hptr->h_type) && !iscommon(type)) { - // Mismatch: common came first; warn and keep the global one + // Mismatch: common came first; warn and keep the global one if (wflag) { printf("Warning: %s: global from ", sym); @@ -1631,7 +1753,7 @@ int hash_add(char * sym, long type, long value, struct OFILE * ofile) } else if (flag) { // They're both global - // Global exported by another ofile; warn and make this one extern + // Global exported by another ofile; warn and make this one extern if (wflag) { printf("Duplicate symbol %s: ", sym); @@ -1644,7 +1766,7 @@ int hash_add(char * sym, long type, long value, struct OFILE * ofile) putword(sym + 8, ABST_EXTERN); } else - { // They're both common + { // They're both common if (hptr->h_value < value) { hptr->h_value = value; @@ -1655,134 +1777,163 @@ int hash_add(char * sym, long type, long value, struct OFILE * ofile) return 0; } + // -// ------------------------------------------------------------------------------------------------- -// Add the imported symbols from this file to unresolved, and the global and common symbols to the -// exported hash table. +// 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 +// 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 - } - } - } +// +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]; - sfix += 12; // Increment symbol fixup pointer - nsymbols--; // Decrement num of symbols to process - } + 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 this is a global/external + if (type & T_EXT) + { + if ((type - T_EXT)) + { + // Then add to hash table + if (hash_add(symbol, type, value, Ofile)) + { + return 1; // Error if addition failed + } + } + else + { + // If value is zero and in hash table + if ((hptr = lookup(symbol)) != NULL) + { + hptr->h_ofile->o_flags |= O_USED; // Mark symbol as used + } + // Otherwise add to unresolved list + else if (add_unresolved(symbol, Ofile)) + { + return 1; // Error if addition failed + } + } + } - return 0; // Success loading symbols + sfix += 12; // Increment symbol fixup pointer + nsymbols--; // Decrement num of symbols to process + } + + 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 -int doobj(char *fname, char *ptr, char *aname, int flags) { - struct OFILE *Ofile; // Object record pointer - char *temp; // Temporary data pointer + // Allocate memory for object record ptr + if ((Ofile = new_ofile()) == NULL) + { + printf("Out of memory processing %s\n",fname); + return 1; + } - 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); + + // Check filename length + if (strlen(temp) > FNLEN - 1) + { + printf("File name too long: %s\n", temp); + return 1; + } + + // Check archive name length + if (strlen(aname) > FNLEN - 1) + { + 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; - // 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; } @@ -1801,7 +1952,7 @@ int dolist(void) // Process object file list while (plist != NULL) { - if (doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags)) + if (doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags)) return 1; ptemp = plist; @@ -1867,7 +2018,7 @@ char * path_tail(char * name) int pladd(char * ptr, char * fname) { if (plist == NULL) - { + { plist = new_ofile(); // First time object record allocation plast = plist; // Update last object record pointer } @@ -1878,7 +2029,7 @@ int pladd(char * ptr, char * fname) } if (plast == NULL) - { + { printf("Out of memory.\n"); // Error if memory allocation fails return 1; } @@ -1914,7 +2065,7 @@ int pladd(char * ptr, char * fname) // int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment) { - long fsize, dsize, size; // File, DATA segment and image sizes + long fsize, dsize, size; // File, DATA segment and image sizes char * ptr, * sptr; // Data pointers int i; // Iterators int sym1len = 0; // Symbol 1 length @@ -1951,13 +2102,13 @@ int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment) strcpy(obj_fname[obj_index], path_tail(fname)); - // Build this image's dummy header + // 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 + 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; @@ -1965,8 +2116,8 @@ int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment) } else { - putlong(ptr+4, 0L); // Text size - putlong(ptr+8, dsize); // Data size + 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; @@ -1975,7 +2126,7 @@ int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment) obj_index++; // Increment object count - putlong(ptr+12, 0L); // BSS 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 @@ -1997,7 +2148,7 @@ int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment) 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[i] = *sym1++; sptr += (sym1len-1); // Step past symbol string *sptr = '\0'; // Terminate symbol string @@ -2028,7 +2179,7 @@ int doobject(char * fname, int fd, char * ptr) long size; // File size if (ptr == NULL) - { + { size = FSIZE(fd); // Get size of input object file // Allocate memory for file data @@ -2055,9 +2206,9 @@ int doobject(char * fname, int fd, char * ptr) obj_index++; close(fd); // Close file - } + } - // Now add this image to the list of pending ofiles (plist) + // 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); } @@ -2068,196 +2219,231 @@ int doobject(char * fname, int fd, char * ptr) // int flush_handles(void) { - int i; // Iterator - char magic[4]; // Magic header number - // unsigned test; + 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 + // Process all handles + for(i=0; i<(int)hd; i++) + { + // Verbose mode information + if (vflag == 1) + { + printf("Read file %s%s\n", name[i], hflag[i] ? " (include)" : ""); + } - return 0; // Return + 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; + } + } + + // Free include, symbol & object handles + for(i=0; i<(int)hd; i++) + { + free(name[i]); + + if (hflag[i]) + { + free(hsym1[i]); + free(hsym2[i]); + } + } + + hd = 0; // Reset next handle indicator + 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; -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); - } - } + if (vflag) + printf("begin parsing\n"); - /* test for comment */ - if (*buf == '#') { - /* found a comment; skip to next \n and start over */ - while (*buf && *buf != '\n') buf++; - continue; - } + while (1) + { + while (*buf && strchr(",\t\n\r\14 ", *buf)) + buf++; - 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++; - } + /* 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++; + } } + // -// Process in a Link Command File ----------------------------------------- +// Process in a Link Command File // - 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 + 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 + // Verbose information + if (vflag > 1) + printf("docmdfile(%s)\n", fname); - // Allocate memory for new argument values - newargv = malloc((long)(sizeof(char *) * MAXARGS)); + // Allocate memory for new argument values + newargv = malloc((long)(sizeof(char *) * MAXARGS)); - if (!newargv) - { - printf("Out of memory.\n"); - return 1; + 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; - } + // 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); + size = FSIZE(fd); - if ((ptr = malloc(size + 1)) == NULL) - { - printf("Out of memory.\n"); - close(fd); - return 1; - } + 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; - } + 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; - } + *(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; - } + // 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); + // Process the inputted flags + if (doargs(newargc, *newargv)) + { + printf("docmdfile: doargs returns TRUE\n"); + return 1; + } - return 0; + free(ptr); + free(newargv); + + 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 i = 1; // Iterator int c; // Command line character - char * ifile, * isym; // File name and symbol name for -i + 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; @@ -2274,7 +2460,7 @@ int doargs(int argc, char * argv[]) display_help(); return 1; case 'a': - case 'A': // Set absolute linking on + case 'A': // Set absolute linking on if (aflag) warn('a', 1); @@ -2286,7 +2472,7 @@ int doargs(int argc, char * argv[]) aflag = 1; // Set abs link flag // Segment order is TEXT, DATA, BSS - // Text segment can be 'r', 'x' or a value + // Text segment can be 'r', 'x' or a value ttype = 0; if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1]) @@ -2305,7 +2491,7 @@ int doargs(int argc, char * argv[]) } i++; - // Data segment can be 'r', 'x' or a value + // Data segment can be 'r', 'x' or a value dtype = 0; if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1]) @@ -2325,7 +2511,7 @@ int doargs(int argc, char * argv[]) i++; btype = 0; - // BSS segment can be 'r', 'x' or a value + // 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 @@ -2364,7 +2550,7 @@ int doargs(int argc, char * argv[]) break; case 'd': - case 'D': // Wait for "return" before exiting + case 'D': // Wait for "return" before exiting if (dflag) warn('d', 0); @@ -2394,7 +2580,7 @@ int doargs(int argc, char * argv[]) ifile = argv[i++]; isym = argv[i++]; - + if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I')) { // handle -ii (No truncation) if (!cflag) @@ -2433,7 +2619,7 @@ int doargs(int argc, char * argv[]) noheaderflag = 1; break; case 'o': - case 'O': // Specify an output file + case 'O': // Specify an output file if (oflag) warn('o', 1); @@ -2488,7 +2674,7 @@ int doargs(int argc, char * argv[]) vflag++; break; case 'z': - case 'Z': // Suppress banner flag + case 'Z': // Suppress banner flag if (zflag) warn('z', 1); @@ -2524,21 +2710,21 @@ int doargs(int argc, char * argv[]) // -// Display Version Information -------------------------------------------- +// Display Version Information // void display_version(void) { if (displaybanner)// && vflag) { - printf("\nReboot's Linker for Atari Jaguar\n"); - printf("Copyright (c) 199x Allan K. Pratt, 2011 Reboot\n"); + 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); } } // -// Display Command Line Help ----------------------------------------------- +// Display Command Line Help // void display_help(void) { @@ -2575,7 +2761,7 @@ void display_help(void) // -// Application Exit ------------------------------------------------------- +// Application Exit // void rln_exit(void) { @@ -2597,7 +2783,7 @@ void rln_exit(void) // -// Determine Processor Endianess ------------------------------------------ +// Determine Processor Endianess // int get_endianess(void) { @@ -2612,67 +2798,73 @@ int get_endianess(void) // -// Application Code Starts Here ------------------------------------------- +// 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 + char * s = NULL; // String pointer for "getenv" + struct HREC * utemp; // Temporary hash record pointer + struct OHEADER * header; // Pointer to output header structure - endian = get_endianess(); // Get processor endianess - cmdlnexec = argv[0]; // Obtain executable name + endian = get_endianess(); // Get processor endianess + cmdlnexec = argv[0]; // Obtain executable name s = getenv("RLNPATH"); - if (s) // Attempt to obtain env variable - strcpy(libdir, s); // Store it if found + if (s) // Attempt to obtain env variable + strcpy(libdir, s); // Store it if found + // Parse the command line if (doargs(argc, argv)) - { // Parse the command line + { errflag = 1; rln_exit(); } if (!zflag && !vflag) { - display_version(); // Display version information - versflag = 1; // We've dumped the version banner + display_version(); // Display version information + versflag = 1; // We've dumped the version banner } + // Process in specified files/objects if (flush_handles()) - { // Process in specified files/objects + { errflag = 1; rln_exit(); } + // Remove elements from unresolved list if (dolist()) - { // Remove elements from unresolved list + { errflag = 1; rln_exit(); } + // 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(); } + // 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; 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); + put_name(utemp->h_ofile); + printf(")\n"); + utemp = utemp->h_next; } } @@ -2683,47 +2875,52 @@ int main(int argc, char * argv[]) } } + // Make one output file from input objs if ((header = make_ofile()) == NULL) - { // Make one output file from input objs + { errflag = 1; rln_exit(); } + // Partial linking if (pflag) - { // Partial linking + { printf("TO DO:Partial linking\n"); errflag = 1; } + // Relocatable linking else if (!aflag) - { // Relocatable linking + { printf("TO DO:Relocatable linking\n"); errflag = 1; } + // Absolute linking else - { // Absolute linking + { if (vflag) { printf("Absolute linking "); if (cflag) - printf("(COF)\n"); + printf("(COF)\n"); else printf("(ABS)\n"); } 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; + errflag = 1; } - if (mflag) // Display the loaded symbols map + if (mflag) // Display the loaded symbols map if (write_map(header)) errflag = 1; + // Display segment size summary if (vflag) - { // Display segment size summary + { printf("\n"); printf("+---------+----------+----------+----------+\n"); printf("| Segment | TEXT | DATA | BSS |\n"); @@ -2732,6 +2929,6 @@ int main(int argc, char * argv[]) printf("+---------+----------+----------+----------+\n\n"); } - free(header); // Free allocated memory - rln_exit(); // Perform application exit + free(header); // Free allocated memory + rln_exit(); // Perform application exit }