mirror of
https://github.com/zeldaret/oot.git
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f4a72303cb
* remove trailing whitespaces * minor docs tweaks * some more trailing whitespaces * few more tweaks
233 lines
9 KiB
C
233 lines
9 KiB
C
#include <ctype.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "spec.h"
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#include "util.h"
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struct Segment *g_segments;
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int g_segmentsCount;
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static void write_ld_script(FILE *fout)
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{
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int i;
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int j;
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fputs("SECTIONS {\n"
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" _RomSize = 0;\n"
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" _RomStart = _RomSize;\n\n",
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fout);
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for (i = 0; i < g_segmentsCount; i++)
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{
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const struct Segment *seg = &g_segments[i];
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// align start of ROM segment
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if (seg->fields & (1 << STMT_romalign))
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fprintf(fout, " _RomSize = (_RomSize + %i) & ~ %i;\n", seg->romalign - 1, seg->romalign - 1);
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// initialized data (.text, .data, .rodata, .sdata)
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// Increment the start of the section
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//if (seg->fields & (1 << STMT_increment))
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//fprintf(fout, " . += 0x%08X;\n", seg->increment);
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fprintf(fout, " _%sSegmentRomStartTemp = _RomSize;\n"
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" _%sSegmentRomStart = _%sSegmentRomStartTemp;\n"
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" ..%s ", seg->name, seg->name, seg->name, seg->name);
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if (seg->fields & (1 << STMT_after))
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fprintf(fout, "_%sSegmentEnd ", seg->after);
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else if (seg->fields & (1 << STMT_number))
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fprintf(fout, "0x%02X000000 ", seg->number);
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else if (seg->fields & (1 << STMT_address))
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fprintf(fout, "0x%08X ", seg->address);
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// (AT(_RomSize) isn't necessary, but adds useful "load address" lines to the map file)
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fprintf(fout, ": AT(_RomSize)\n {\n"
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" _%sSegmentStart = .;\n"
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" . = ALIGN(0x10);\n"
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" _%sSegmentTextStart = .;\n",
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seg->name, seg->name);
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if (seg->fields & (1 << STMT_align))
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fprintf(fout, " . = ALIGN(0x%X);\n", seg->align);
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for (j = 0; j < seg->includesCount; j++)
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{
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fprintf(fout, " %s (.text)\n", seg->includes[j].fpath);
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if (seg->includes[j].linkerPadding != 0)
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fprintf(fout, " . += 0x%X;\n", seg->includes[j].linkerPadding);
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}
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fprintf(fout, " _%sSegmentTextEnd = .;\n", seg->name);
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fprintf(fout, " _%sSegmentTextSize = ABSOLUTE( _%sSegmentTextEnd - _%sSegmentTextStart );\n", seg->name, seg->name, seg->name);
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fprintf(fout, " _%sSegmentDataStart = .;\n", seg->name);
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for (j = 0; j < seg->includesCount; j++)
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{
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if (!seg->includes[j].dataWithRodata)
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fprintf(fout, " %s (.data)\n", seg->includes[j].fpath);
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}
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/*
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.rodata)\n", seg->includes[j].fpath);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.sdata)\n", seg->includes[j].fpath);
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*/
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//fprintf(fout, " . = ALIGN(0x10);\n");
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fprintf(fout, " _%sSegmentDataEnd = .;\n", seg->name);
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fprintf(fout, " _%sSegmentDataSize = ABSOLUTE( _%sSegmentDataEnd - _%sSegmentDataStart );\n", seg->name, seg->name, seg->name);
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fprintf(fout, " _%sSegmentRoDataStart = .;\n", seg->name);
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for (j = 0; j < seg->includesCount; j++)
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{
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if (seg->includes[j].dataWithRodata)
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fprintf(fout, " %s (.data)\n", seg->includes[j].fpath);
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fprintf(fout, " %s (.rodata)\n", seg->includes[j].fpath);
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// Compilers other than IDO, such as GCC, produce different sections such as
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// the ones named directly below. These sections do not contain values that
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// need relocating, but we need to ensure that the base .rodata section
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// always comes first. The reason this is important is due to relocs assuming
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// the base of .rodata being the offset for the relocs and thus needs to remain
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// the beginning of the entire rodata area in order to remain consistent.
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// Inconsistencies will lead to various .rodata reloc crashes as a result of
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// either missing relocs or wrong relocs.
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fprintf(fout, " %s (.rodata.str1.4)\n", seg->includes[j].fpath);
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fprintf(fout, " %s (.rodata.cst4)\n", seg->includes[j].fpath);
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fprintf(fout, " %s (.rodata.cst8)\n", seg->includes[j].fpath);
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}
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//fprintf(fout, " . = ALIGN(0x10);\n");
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fprintf(fout, " _%sSegmentRoDataEnd = .;\n", seg->name);
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fprintf(fout, " _%sSegmentRoDataSize = ABSOLUTE( _%sSegmentRoDataEnd - _%sSegmentRoDataStart );\n", seg->name, seg->name, seg->name);
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fprintf(fout, " _%sSegmentSDataStart = .;\n", seg->name);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.sdata)\n", seg->includes[j].fpath);
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fprintf(fout, " . = ALIGN(0x10);\n");
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fprintf(fout, " _%sSegmentSDataEnd = .;\n", seg->name);
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fprintf(fout, " _%sSegmentOvlStart = .;\n", seg->name);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.ovl)\n", seg->includes[j].fpath);
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fprintf(fout, " . = ALIGN(0x10);\n");
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fprintf(fout, " _%sSegmentOvlEnd = .;\n", seg->name);
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if (seg->fields & (1 << STMT_increment))
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fprintf(fout, " . += 0x%08X;\n", seg->increment);
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fputs(" }\n", fout);
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//fprintf(fout, " _RomSize += ( _%sSegmentDataEnd - _%sSegmentTextStart );\n", seg->name, seg->name);
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fprintf(fout, " _RomSize += ( _%sSegmentOvlEnd - _%sSegmentTextStart );\n", seg->name, seg->name);
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fprintf(fout, " _%sSegmentRomEndTemp = _RomSize;\n"
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"_%sSegmentRomEnd = _%sSegmentRomEndTemp;\n\n",
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seg->name, seg->name, seg->name);
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// algn end of ROM segment
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if (seg->fields & (1 << STMT_romalign))
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fprintf(fout, " _RomSize = (_RomSize + %i) & ~ %i;\n", seg->romalign - 1, seg->romalign - 1);
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// uninitialized data (.sbss, .scommon, .bss, COMMON)
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fprintf(fout, " ..%s.bss ADDR(..%s) + SIZEOF(..%s) (NOLOAD) :\n"
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/*" ..%s.bss :\n"*/
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" {\n"
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" . = ALIGN(0x10);\n"
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" _%sSegmentBssStart = .;\n",
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seg->name, seg->name, seg->name, seg->name);
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if (seg->fields & (1 << STMT_align))
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fprintf(fout, " . = ALIGN(0x%X);\n", seg->align);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.sbss)\n", seg->includes[j].fpath);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.scommon)\n", seg->includes[j].fpath);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (.bss)\n", seg->includes[j].fpath);
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for (j = 0; j < seg->includesCount; j++)
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fprintf(fout, " %s (COMMON)\n", seg->includes[j].fpath);
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fprintf(fout, " . = ALIGN(0x10);\n"
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" _%sSegmentBssEnd = .;\n"
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" _%sSegmentEnd = .;\n"
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" }\n"
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" _%sSegmentBssSize = ABSOLUTE( _%sSegmentBssEnd - _%sSegmentBssStart );\n\n",
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seg->name, seg->name, seg->name, seg->name, seg->name);
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// Increment the end of the segment
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//if (seg->fields & (1 << STMT_increment))
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//fprintf(fout, " . += 0x%08X;\n", seg->increment);
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//fprintf(fout, " ..%s.ovl ADDR(..%s) + SIZEOF(..%s) :\n"
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// /*" ..%s.bss :\n"*/
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// " {\n",
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// seg->name, seg->name, seg->name);
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//fprintf(fout, " _%sSegmentOvlStart = .;\n", seg->name);
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//for (j = 0; j < seg->includesCount; j++)
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// fprintf(fout, " %s (.ovl)\n", seg->includes[j].fpath);
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////fprintf(fout, " . = ALIGN(0x10);\n");
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//fprintf(fout, " _%sSegmentOvlEnd = .;\n", seg->name);
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//fprintf(fout, "\n }\n");
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}
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fputs(" _RomEnd = _RomSize;\n}\n", fout);
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}
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static void usage(const char *execname)
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{
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fprintf(stderr, "Nintendo 64 linker script generation tool v0.02\n"
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"usage: %s SPEC_FILE LD_SCRIPT\n"
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"SPEC_FILE file describing the organization of object files into segments\n"
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"LD_SCRIPT filename of output linker script\n",
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execname);
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}
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int main(int argc, char **argv)
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{
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FILE *ldout;
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void *spec;
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size_t size;
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if (argc != 3)
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{
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usage(argv[0]);
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return 1;
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}
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spec = util_read_whole_file(argv[1], &size);
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parse_rom_spec(spec, &g_segments, &g_segmentsCount);
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ldout = fopen(argv[2], "w");
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if (ldout == NULL)
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util_fatal_error("failed to open file '%s' for writing", argv[2]);
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write_ld_script(ldout);
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fclose(ldout);
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free(spec);
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return 0;
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}
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