mirror of
https://github.com/zeldaret/oot.git
synced 2024-11-25 17:54:15 +00:00
e413325637
* Add support for 'after' and 'number' in mkldscript * Use 'after' in spec to ensure code ends up after dmadata in RAM
492 lines
15 KiB
C
492 lines
15 KiB
C
#include <ctype.h>
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "util.h"
|
|
|
|
#define ARRAY_COUNT(arr) (sizeof(arr) / sizeof(arr[0]))
|
|
|
|
static FILE *fout;
|
|
|
|
enum
|
|
{
|
|
STMT_address,
|
|
STMT_after,
|
|
STMT_align,
|
|
STMT_beginseg,
|
|
STMT_endseg,
|
|
STMT_entry,
|
|
STMT_flags,
|
|
STMT_include,
|
|
STMT_name,
|
|
STMT_number,
|
|
STMT_romalign,
|
|
STMT_stack,
|
|
STMT_increment,
|
|
};
|
|
|
|
enum
|
|
{
|
|
FLAG_BOOT = (1 << 0),
|
|
FLAG_OBJECT = (1 << 1),
|
|
FLAG_RAW = (1 << 2),
|
|
};
|
|
|
|
struct Segment
|
|
{
|
|
uint32_t fields;
|
|
char *name;
|
|
char *after;
|
|
uint32_t flags;
|
|
uint32_t address;
|
|
uint32_t stack;
|
|
uint32_t align;
|
|
uint32_t romalign;
|
|
uint32_t increment;
|
|
uint32_t entry;
|
|
uint32_t number;
|
|
char **includes;
|
|
int includesCount;
|
|
};
|
|
|
|
static struct Segment *g_segments = NULL;
|
|
static int g_segmentsCount = 0;
|
|
|
|
static struct Segment *add_segment(void)
|
|
{
|
|
struct Segment *seg;
|
|
|
|
g_segmentsCount++;
|
|
g_segments = realloc(g_segments, g_segmentsCount * sizeof(*g_segments));
|
|
|
|
seg = &g_segments[g_segmentsCount - 1];
|
|
memset(seg, 0, sizeof(*seg));
|
|
|
|
seg->align = 16;
|
|
|
|
return seg;
|
|
}
|
|
|
|
static char *skip_whitespace(char *str)
|
|
{
|
|
while (isspace(*str))
|
|
str++;
|
|
return str;
|
|
}
|
|
|
|
// null terminates the current token and returns a pointer to the next token
|
|
static char *token_split(char *str)
|
|
{
|
|
while (!isspace(*str))
|
|
{
|
|
if (*str == 0)
|
|
return str; // end of string
|
|
str++;
|
|
}
|
|
*str = 0; // terminate token
|
|
str++;
|
|
|
|
return skip_whitespace(str);
|
|
}
|
|
|
|
// null terminates the current line and returns a pointer to the next line
|
|
static char *line_split(char *str)
|
|
{
|
|
while (*str != '\n')
|
|
{
|
|
if (*str == 0)
|
|
return str; // end of string
|
|
str++;
|
|
}
|
|
*str = 0; // terminate line
|
|
return str + 1;
|
|
}
|
|
|
|
static bool parse_number(const char *str, unsigned int *num)
|
|
{
|
|
char *endptr;
|
|
long int n = strtol(str, &endptr, 0);
|
|
*num = n;
|
|
return endptr > str;
|
|
}
|
|
|
|
static bool parse_flags(char *str, unsigned int *flags)
|
|
{
|
|
unsigned int f = 0;
|
|
|
|
while (str[0] != 0)
|
|
{
|
|
char *next = token_split(str);
|
|
|
|
if (strcmp(str, "BOOT") == 0)
|
|
f |= FLAG_BOOT;
|
|
else if (strcmp(str, "OBJECT") == 0)
|
|
f |= FLAG_OBJECT;
|
|
else if (strcmp(str, "RAW") == 0)
|
|
f |= FLAG_RAW;
|
|
else
|
|
return false;
|
|
|
|
str = next;
|
|
}
|
|
*flags = f;
|
|
return true;
|
|
}
|
|
|
|
static bool parse_quoted_string(char *str, char **out)
|
|
{
|
|
if (*str != '"')
|
|
return false;
|
|
|
|
str++;
|
|
*out = str;
|
|
|
|
while (*str != '"')
|
|
{
|
|
if (*str == 0)
|
|
return false; // unterminated quote
|
|
str++;
|
|
}
|
|
*str = 0;
|
|
str++;
|
|
|
|
str = skip_whitespace(str);
|
|
if (*str != 0)
|
|
return false; // garbage after filename
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool is_pow_of_2(unsigned int n)
|
|
{
|
|
return (n & (n - 1)) == 0;
|
|
}
|
|
|
|
static const char *const stmtNames[] =
|
|
{
|
|
[STMT_address] = "address",
|
|
[STMT_after] = "after",
|
|
[STMT_align] = "align",
|
|
[STMT_beginseg] = "beginseg",
|
|
[STMT_endseg] = "endseg",
|
|
[STMT_entry] = "entry",
|
|
[STMT_flags] = "flags",
|
|
[STMT_include] = "include",
|
|
[STMT_name] = "name",
|
|
[STMT_number] = "number",
|
|
[STMT_romalign] = "romalign",
|
|
[STMT_stack] = "stack",
|
|
[STMT_increment] = "increment",
|
|
};
|
|
|
|
static void parse_rom_spec(char *spec)
|
|
{
|
|
int lineNum = 1;
|
|
char *line = spec;
|
|
|
|
struct Segment *currSeg = NULL;
|
|
|
|
// iterate over lines
|
|
while (line[0] != 0)
|
|
{
|
|
char *nextLine = line_split(line);
|
|
|
|
if (line[0] != 0)
|
|
{
|
|
char *stmtName = skip_whitespace(line);
|
|
char *args = token_split(stmtName);
|
|
unsigned int stmt;
|
|
|
|
for (stmt = 0; stmt < ARRAY_COUNT(stmtNames); stmt++)
|
|
if (strcmp(stmtName, stmtNames[stmt]) == 0)
|
|
goto got_stmt;
|
|
util_fatal_error("line %i: unknown statement '%s'", lineNum, stmtName);
|
|
got_stmt:
|
|
|
|
if (currSeg != NULL)
|
|
{
|
|
// ensure no duplicates (except for 'include')
|
|
if (stmt != STMT_include && (currSeg->fields & (1 << stmt)))
|
|
util_fatal_error("line %i: duplicate '%s' statement", lineNum, stmtName);
|
|
|
|
currSeg->fields |= 1 << stmt;
|
|
|
|
// statements valid within a segment definition
|
|
switch (stmt)
|
|
{
|
|
case STMT_beginseg:
|
|
util_fatal_error("line %i: '%s' inside of a segment definition", lineNum, stmtName);
|
|
break;
|
|
case STMT_endseg:
|
|
// verify segment data
|
|
if (currSeg->name == NULL)
|
|
util_fatal_error("line %i: no name specified for segment", lineNum);
|
|
if (currSeg->includesCount == 0)
|
|
util_fatal_error("line %i: no includes specified for segment", lineNum);
|
|
currSeg = NULL;
|
|
break;
|
|
case STMT_name:
|
|
if (!parse_quoted_string(args, &currSeg->name))
|
|
util_fatal_error("line %i: invalid name", lineNum);
|
|
break;
|
|
case STMT_after:
|
|
if (!parse_quoted_string(args, &currSeg->after))
|
|
util_fatal_error("line %i: invalid name for 'after'", lineNum);
|
|
break;
|
|
case STMT_address:
|
|
if (!parse_number(args, &currSeg->address))
|
|
util_fatal_error("line %i: expected number after 'address'", lineNum);
|
|
break;
|
|
case STMT_number:
|
|
if (!parse_number(args, &currSeg->number))
|
|
util_fatal_error("line %i: expected number after 'number'", lineNum);
|
|
break;
|
|
case STMT_flags:
|
|
if (!parse_flags(args, &currSeg->flags))
|
|
util_fatal_error("line %i: invalid flags", lineNum);
|
|
break;
|
|
case STMT_align:
|
|
if (!parse_number(args, &currSeg->align))
|
|
util_fatal_error("line %i: expected number after 'align'", lineNum);
|
|
if (!is_pow_of_2(currSeg->align))
|
|
util_fatal_error("line %i: alignment is not a power of two", lineNum);
|
|
break;
|
|
case STMT_romalign:
|
|
if (!parse_number(args, &currSeg->romalign))
|
|
util_fatal_error("line %i: expected number after 'romalign'", lineNum);
|
|
if (!is_pow_of_2(currSeg->romalign))
|
|
util_fatal_error("line %i: alignment is not a power of two", lineNum);
|
|
break;
|
|
case STMT_include:
|
|
currSeg->includesCount++;
|
|
currSeg->includes = realloc(currSeg->includes, currSeg->includesCount * sizeof(*currSeg->includes));
|
|
if (!parse_quoted_string(args, &currSeg->includes[currSeg->includesCount - 1]))
|
|
util_fatal_error("line %i: invalid filename", lineNum);
|
|
break;
|
|
case STMT_increment:
|
|
if (!parse_number(args, &currSeg->increment))
|
|
util_fatal_error("line %i: expected number after 'increment'", lineNum);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "warning: '%s' is not implemented\n", stmtName);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// commands valid outside a segment definition
|
|
switch (stmt)
|
|
{
|
|
case STMT_beginseg:
|
|
currSeg = add_segment();
|
|
break;
|
|
case STMT_endseg:
|
|
util_fatal_error("line %i: '%s' outside of a segment definition", lineNum, stmtName);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "warning: '%s' is not implemented\n", stmtName);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
line = nextLine;
|
|
lineNum++;
|
|
}
|
|
}
|
|
|
|
static void write_ld_script(void)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
fputs("SECTIONS {\n"
|
|
" _RomSize = 0;\n"
|
|
" _RomStart = _RomSize;\n\n",
|
|
fout);
|
|
|
|
for (i = 0; i < g_segmentsCount; i++)
|
|
{
|
|
const struct Segment *seg = &g_segments[i];
|
|
|
|
// align start of ROM segment
|
|
if (seg->fields & (1 << STMT_romalign))
|
|
fprintf(fout, " _RomSize = (_RomSize + %i) & ~ %i;\n", seg->romalign - 1, seg->romalign - 1);
|
|
|
|
// initialized data (.text, .data, .rodata, .sdata)
|
|
|
|
// Increment the start of the section
|
|
//if (seg->fields & (1 << STMT_increment))
|
|
//fprintf(fout, " . += 0x%08X;\n", seg->increment);
|
|
|
|
fprintf(fout, " _%sSegmentRomStart = _RomSize;\n"
|
|
" ..%s ", seg->name, seg->name);
|
|
|
|
if (seg->fields & (1 << STMT_after))
|
|
fprintf(fout, "_%sSegmentEnd ", seg->after);
|
|
else if (seg->fields & (1 << STMT_number))
|
|
fprintf(fout, "0x%02X000000 ", seg->number);
|
|
else if (seg->fields & (1 << STMT_address))
|
|
fprintf(fout, "0x%08X ", seg->address);
|
|
|
|
// (AT(_RomSize) isn't necessary, but adds useful "load address" lines to the map file)
|
|
fprintf(fout, ": AT(_RomSize)\n {\n"
|
|
" _%sSegmentStart = .;\n"
|
|
" . = ALIGN(0x10);\n"
|
|
" _%sSegmentTextStart = .;\n",
|
|
seg->name, seg->name);
|
|
|
|
if (seg->fields & (1 << STMT_align))
|
|
fprintf(fout, " . = ALIGN(0x%X);\n", seg->align);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.text)\n", seg->includes[j]);
|
|
|
|
fprintf(fout, " _%sSegmentTextEnd = .;\n", seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentTextSize = ABSOLUTE( _%sSegmentTextEnd - _%sSegmentTextStart );\n", seg->name, seg->name, seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentDataStart = .;\n", seg->name);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.data)\n", seg->includes[j]);
|
|
|
|
/*
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.rodata)\n", seg->includes[j]);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.sdata)\n", seg->includes[j]);
|
|
*/
|
|
|
|
//fprintf(fout, " . = ALIGN(0x10);\n");
|
|
fprintf(fout, " _%sSegmentDataEnd = .;\n", seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentDataSize = ABSOLUTE( _%sSegmentDataEnd - _%sSegmentDataStart );\n", seg->name, seg->name, seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentRoDataStart = .;\n", seg->name);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.rodata)\n", seg->includes[j]);
|
|
|
|
//fprintf(fout, " . = ALIGN(0x10);\n");
|
|
|
|
fprintf(fout, " _%sSegmentRoDataEnd = .;\n", seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentRoDataSize = ABSOLUTE( _%sSegmentRoDataEnd - _%sSegmentRoDataStart );\n", seg->name, seg->name, seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentSDataStart = .;\n", seg->name);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.sdata)\n", seg->includes[j]);
|
|
|
|
fprintf(fout, " . = ALIGN(0x10);\n");
|
|
|
|
fprintf(fout, " _%sSegmentSDataEnd = .;\n", seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentOvlStart = .;\n", seg->name);
|
|
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.ovl)\n", seg->includes[j]);
|
|
|
|
fprintf(fout, " . = ALIGN(0x10);\n");
|
|
|
|
fprintf(fout, " _%sSegmentOvlEnd = .;\n", seg->name);
|
|
|
|
if (seg->fields & (1 << STMT_increment))
|
|
fprintf(fout, " . += 0x%08X;\n", seg->increment);
|
|
|
|
|
|
fputs(" }\n", fout);
|
|
//fprintf(fout, " _RomSize += ( _%sSegmentDataEnd - _%sSegmentTextStart );\n", seg->name, seg->name);
|
|
fprintf(fout, " _RomSize += ( _%sSegmentOvlEnd - _%sSegmentTextStart );\n", seg->name, seg->name);
|
|
|
|
fprintf(fout, " _%sSegmentRomEnd = _RomSize;\n\n", seg->name);
|
|
|
|
// algn end of ROM segment
|
|
if (seg->fields & (1 << STMT_romalign))
|
|
fprintf(fout, " _RomSize = (_RomSize + %i) & ~ %i;\n", seg->romalign - 1, seg->romalign - 1);
|
|
|
|
// uninitialized data (.sbss, .scommon, .bss, COMMON)
|
|
fprintf(fout, " ..%s.bss ADDR(..%s) + SIZEOF(..%s) (NOLOAD) :\n"
|
|
/*" ..%s.bss :\n"*/
|
|
" {\n"
|
|
" . = ALIGN(0x10);\n"
|
|
" _%sSegmentBssStart = .;\n",
|
|
seg->name, seg->name, seg->name, seg->name);
|
|
if (seg->fields & (1 << STMT_align))
|
|
fprintf(fout, " . = ALIGN(0x%X);\n", seg->align);
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.sbss)\n", seg->includes[j]);
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.scommon)\n", seg->includes[j]);
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (.bss)\n", seg->includes[j]);
|
|
for (j = 0; j < seg->includesCount; j++)
|
|
fprintf(fout, " %s (COMMON)\n", seg->includes[j]);
|
|
fprintf(fout, " . = ALIGN(0x10);\n"
|
|
" _%sSegmentBssEnd = .;\n"
|
|
" _%sSegmentEnd = .;\n"
|
|
" }\n"
|
|
" _%sSegmentBssSize = ABSOLUTE( _%sSegmentBssEnd - _%sSegmentBssStart );\n\n",
|
|
seg->name, seg->name, seg->name, seg->name, seg->name);
|
|
|
|
// Increment the end of the segment
|
|
//if (seg->fields & (1 << STMT_increment))
|
|
//fprintf(fout, " . += 0x%08X;\n", seg->increment);
|
|
|
|
//fprintf(fout, " ..%s.ovl ADDR(..%s) + SIZEOF(..%s) :\n"
|
|
// /*" ..%s.bss :\n"*/
|
|
// " {\n",
|
|
// seg->name, seg->name, seg->name);
|
|
//fprintf(fout, " _%sSegmentOvlStart = .;\n", seg->name);
|
|
|
|
//for (j = 0; j < seg->includesCount; j++)
|
|
// fprintf(fout, " %s (.ovl)\n", seg->includes[j]);
|
|
|
|
////fprintf(fout, " . = ALIGN(0x10);\n");
|
|
|
|
//fprintf(fout, " _%sSegmentOvlEnd = .;\n", seg->name);
|
|
|
|
//fprintf(fout, "\n }\n");
|
|
}
|
|
|
|
|
|
fputs(" _RomEnd = _RomSize;\n}\n", fout);
|
|
}
|
|
|
|
static void usage(const char *execname)
|
|
{
|
|
fprintf(stderr, "Nintendo 64 linker script generation tool v0.01\n"
|
|
"usage: %s SPEC_FILE LD_SCRIPT\n"
|
|
"SPEC_FILE file describing the organization of object files into segments\n"
|
|
"LD_SCRIPT filename of output linker script\n",
|
|
execname);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
void *spec;
|
|
size_t size;
|
|
|
|
if (argc != 3)
|
|
{
|
|
usage(argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
spec = util_read_whole_file(argv[1], &size);
|
|
parse_rom_spec(spec);
|
|
fout = fopen(argv[2], "w");
|
|
if (fout == NULL)
|
|
util_fatal_error("failed to open file '%s' for writing", argv[2]);
|
|
write_ld_script();
|
|
free(spec);
|
|
fclose(fout);
|
|
|
|
return 0;
|
|
}
|