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Handle .rodata.cst16 on AMD64 for FP constants.

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This commit is contained in:
gbeauche 2004-01-27 17:02:13 +00:00
parent 8afa65cc96
commit c9edbd29ee
1 changed files with 44 additions and 7 deletions
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51
SheepShaver/src/kpx_cpu/src/cpu/jit/dyngen.c
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@ -457,10 +457,10 @@ int arm_emit_ldr_info(const char *name, unsigned long start_offset,
}
#endif
static void print_code(FILE *outfile, const char *name, const uint8_t *code_p, int code_size)
static void do_print_code(FILE *outfile, const char *name, const uint8_t *code_p, int code_size)
{
int i;
fprintf(outfile, " static const uint8 %s_code[] = {", name);
fprintf(outfile, " static const uint8 %s[] = {", name);
for (i = 0; i < code_size; i++) {
if ((i % 12) == 0) {
if (i != 0)
@ -474,6 +474,23 @@ static void print_code(FILE *outfile, const char *name, const uint8_t *code_p, i
fprintf(outfile, "\n };\n");
}
static void print_code(FILE *outfile, const char *name, const uint8_t *code_p, int code_size)
{
char *code_name;
code_name = alloca(strlen(name) + 5);
strcpy(code_name, name);
strcat(code_name, "_code");
do_print_code(outfile, code_name, code_p, code_size);
}
static char *gen_dot_prefix(const char *sym_name)
{
static char name[256];
assert(sym_name[0] == '.');
snprintf(name, sizeof(name), "dg_dot_%s", sym_name + 1);
return name;
}
#define MAX_ARGS 3
@ -702,7 +719,8 @@ void gen_code(const char *name, const char *demangled_name,
if (*sym_name &&
!strstart(sym_name, "__op_param", NULL) &&
!strstart(sym_name, "__op_cpuparam", NULL) &&
!strstart(sym_name, "__op_jmp", NULL))
!strstart(sym_name, "__op_jmp", NULL) &&
!strstart(sym_name, ".LC", NULL))
error("unexpected external symbol %s", sym_name);
}
}
@ -801,11 +819,12 @@ void gen_code(const char *name, const char *demangled_name,
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
if (strstart(sym_name, "__op_param", &p)) {
if (strstart(sym_name, "__op_param", &p))
snprintf(name, sizeof(name), "param%s", p);
} else {
snprintf(name, sizeof(name), "(long)(&%s)", sym_name);
}
else if (strstart(sym_name, ".LC", NULL))
snprintf(name, sizeof(name), "(long)(%s)", gen_dot_prefix(sym_name));
else
snprintf(name, sizeof(name), "(long)(&%s)", sym_name[0]);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
switch(type) {
@ -1189,6 +1208,9 @@ int load_elf(const char *filename, FILE *outfile, int out_type)
elf_shdr *data_sec;
uint8_t *data;
int data_shndx;
elf_shdr *rodata_cst16_sec;
uint8_t *rodata_cst16 = NULL;
int rodata_cst16_shndx;
fd = open(filename, O_RDONLY);
if (fd < 0)
@ -1259,6 +1281,13 @@ int load_elf(const char *filename, FILE *outfile, int out_type)
data_shndx = data_sec - shdr;
data = sdata[data_shndx];
/* data section */
rodata_cst16_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".rodata.cst16");
if (rodata_cst16_sec) {
rodata_cst16_shndx = rodata_cst16_sec - shdr;
rodata_cst16 = sdata[rodata_cst16_shndx];
}
/* text section */
text_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".text");
if (!text_sec)
@ -1353,6 +1382,14 @@ int load_elf(const char *filename, FILE *outfile, int out_type)
gen_code(func_name, NULL, sym->st_value, sym->st_size, outfile,
text, relocs, nb_relocs, 3, prefix);
}
/* emit local symbols */
else if (strstart(name, ".LC", NULL)) {
if (sym->st_shndx != (rodata_cst16_sec - shdr))
error("invalid section for local data %s (%x)\n", name, sym->st_shndx);
fprintf(outfile, "#ifdef DYNGEN_IMPL\n");
do_print_code(outfile, gen_dot_prefix(name), rodata_cst16 + sym->st_value, 16);
fprintf(outfile, "#endif\n");
}
}
fprintf(outfile, "#undef DEFINE_CST\n");
fprintf(outfile, "#undef DEFINE_GEN\n");