mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-11-26 10:49:21 +00:00
[ Patch from Jean-Pierre <chombier@free.fr> ]
More changes to support mach-o x86_64.
This commit is contained in:
asvitkine
parent
f4705aa5e1
commit
ded367a176
@ -572,6 +572,7 @@ int text_shndx;
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int data_shndx;
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uint8_t *text;
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uint8_t *data;
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uint8_t *literal16;
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EXE_RELOC *relocs;
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int nb_relocs;
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@ -1156,6 +1157,7 @@ struct symtab_command *symtabcmd = 0;
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struct SECTION *section_hdr;
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struct SECTION *text_sec_hdr;
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struct SECTION *data_sec_hdr;
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struct SECTION *literal16_sec_hdr;
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uint8_t **sdata;
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/* relocs */
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@ -1277,8 +1279,8 @@ static const char * find_reloc_name_in_sec_ptr(int address, struct SECTION * sec
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error("size = 0");
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}
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else if( sec_hdr->flags & S_LAZY_SYMBOL_POINTERS ||
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sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS)
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else if( (sec_hdr->flags & S_LAZY_SYMBOL_POINTERS) ||
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(sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS) )
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size = sizeof(unsigned long);
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else
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return 0;
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@ -1355,6 +1357,10 @@ static const char * get_reloc_name(EXE_RELOC * rel, int * sslide)
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return get_sym_name(&symtab[rel->r_symbolnum]);
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}
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#ifdef HOST_X86_64
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return 0;
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#else
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/* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */
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sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff;
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@ -1401,6 +1407,7 @@ static const char * get_reloc_name(EXE_RELOC * rel, int * sslide)
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name = (char *)find_sym_with_value_and_sec_number(sectoffset, sectnum, sslide);
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return name;
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#endif
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}
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/* Used by dyngen common code */
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@ -1510,10 +1517,12 @@ int load_object(const char *filename, FILE *outfile)
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/* .data section */
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data_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_DATA, SECT_DATA);
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i = find_mach_sec_index(section_hdr, segment->nsects, SEG_DATA, SECT_DATA);
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if (i == -1)
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data = NULL;
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else
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data = sdata[i];
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data = (i == -1) ? NULL : sdata[i];
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/* const section TODO: __cstring __literal4 __literal8 */
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literal16_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, "__literal16");
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i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, "__literal16");
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literal16 = (i == -1) ? NULL : sdata[i];
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/* .text section */
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text_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
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@ -1584,7 +1593,14 @@ int load_object(const char *filename, FILE *outfile)
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void get_reloc_expr(char *name, int name_size, const char *sym_name)
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{
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const char *p;
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char *demangled;
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char demangled_buf[256];
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size_t nd = sizeof(demangled_buf);
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int status;
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demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
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if (!status && demangled)
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sym_name = demangled;
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if (strstart(sym_name, "__op_param", &p) ||
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strstart(sym_name, "__op_PARAM", &p)) {
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snprintf(name, name_size, "param%s", p);
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@ -1713,6 +1729,10 @@ void gen_code(const char *name, const char *demangled_name,
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const char *sym_name, *p;
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EXE_RELOC *rel;
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int op_execute = 0;
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char demangled_buf[256];
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size_t nd;
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char *demangled;
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int status;
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if (strncmp(name, "op_execute", 10) == 0)
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op_execute = 1;
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@ -1933,6 +1953,10 @@ void gen_code(const char *name, const char *demangled_name,
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sym_name = get_rel_sym_name(rel);
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if(!sym_name)
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continue;
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nd = sizeof(demangled_buf);
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demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
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if (!status && demangled)
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sym_name = demangled;
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if (strstart(sym_name, "__op_PARAM", &p)) {
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n = strtoul(p, NULL, 10);
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if (n > MAX_ARGS)
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@ -1979,6 +2003,10 @@ void gen_code(const char *name, const char *demangled_name,
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sym_name = get_rel_sym_name(rel);
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if(!sym_name)
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continue;
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nd = sizeof(demangled_buf);
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demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
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if (!status && demangled)
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sym_name = demangled;
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if (*sym_name &&
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!strstart(sym_name, "__op_PARAM", NULL) &&
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!strstart(sym_name, "__op_jmp", NULL) &&
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@ -2218,8 +2246,9 @@ void patch_relocations(FILE *outfile, const char *name, host_ulong size, host_ul
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const char *p;
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int slide, sslide;
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int i, bytecount, bitlength;
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int local16;
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for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
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for (i = 0, rel = relocs, local16 = 0; i < nb_relocs; i++, rel++) {
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unsigned int isym, usesym, offset, length, pcrel, type;
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isym = rel->r_symbolnum;
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@ -2238,14 +2267,36 @@ void patch_relocations(FILE *outfile, const char *name, host_ulong size, host_ul
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if (length > 3)
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error("unsupported %d-bit relocation", 8 * (1 << length));
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sym_name = get_reloc_name(rel, &sslide);
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if (!sym_name) {
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fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
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name, isym, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
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continue; /* dunno how to handle without final_sym_name */
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bytecount = (1 << length);
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bitlength = 8 * bytecount;
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slide = offset - start_offset;
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if (!usesym) {
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// local reloc
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sslide = get32((uint32_t *)(text + offset)) + rel->r_address + 4;
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if ( literal16_sec_hdr
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&& sslide >= literal16_sec_hdr->addr
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&& sslide + 16 <= literal16_sec_hdr->addr + literal16_sec_hdr->size ) {
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sprintf(final_sym_name, "literal16_%d", ++local);
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print_data(outfile, final_sym_name, literal16 + sslide - literal16_sec_hdr->addr, 16);
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fprintf(outfile, " static uint8 *data_p_%d = NULL;\n", local);
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fprintf(outfile, " if (data_p_%d == NULL)\n", local);
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fprintf(outfile, " data_p_%d = copy_data(%s, %d);\n", local, final_sym_name, 16);
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fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (int32_t)((long)data_p_%d - (long)(code_ptr() + %d + %d));\n",
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slide, local, slide, bytecount);
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} else {
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fprintf(outfile, "/* #warning relocation not handled in %s (section %d, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
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name, isym, offset, length, pcrel ? "pcrel":"", type);
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}
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continue;
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}
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sym_name = get_reloc_name(rel, &sslide);
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if (!sym_name) {
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error("external symbol not found in %s (section %d, offset 0x%x, length 0x%x, %s, type 0x%x\n",
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name, isym, offset, length, pcrel ? "pcrel":"", type);
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}
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slide = offset - start_offset;
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if (strstart(sym_name, "__op_jmp", &p)) {
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int n;
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n = strtol(p, NULL, 10);
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@ -2254,9 +2305,6 @@ void patch_relocations(FILE *outfile, const char *name, host_ulong size, host_ul
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continue; /* Nothing more to do */
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}
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bytecount = (1 << length);
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bitlength = 8 * bytecount;
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get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
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if (pcrel || strstart(sym_name,"__op_gen_label",&p)) {
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@ -2854,6 +2902,7 @@ int gen_file(FILE *outfile, int out_type)
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}
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else {
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/* demangle C++ symbols */
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nd = 256;
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demangled_name = cxx_demangle(name, demangled_name, &nd, &status);
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if (status == 0 && strstart(demangled_name, OP_PREFIX, NULL)) {
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/* get real function name */
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