+++ /dev/null
-/*
- * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "vpx_config.h"
-#include "vpx/vpx_integer.h"
-
-typedef enum {
- OUTPUT_FMT_PLAIN,
- OUTPUT_FMT_RVDS,
- OUTPUT_FMT_GAS,
- OUTPUT_FMT_C_HEADER,
-} output_fmt_t;
-
-int log_msg(const char *fmt, ...) {
- int res;
- va_list ap;
- va_start(ap, fmt);
- res = vfprintf(stderr, fmt, ap);
- va_end(ap);
- return res;
-}
-
-#if defined(__GNUC__) && __GNUC__
-
-#if defined(FORCE_PARSE_ELF)
-
-#if defined(__MACH__)
-#undef __MACH__
-#endif
-
-#if !defined(__ELF__)
-#define __ELF__
-#endif
-#endif
-
-#if defined(__MACH__)
-
-#include <mach-o/loader.h>
-#include <mach-o/nlist.h>
-
-int print_macho_equ(output_fmt_t mode, uint8_t* name, int val) {
- switch (mode) {
- case OUTPUT_FMT_RVDS:
- printf("%-40s EQU %5d\n", name, val);
- return 0;
- case OUTPUT_FMT_GAS:
- printf(".set %-40s, %5d\n", name, val);
- return 0;
- case OUTPUT_FMT_C_HEADER:
- printf("#define %-40s %5d\n", name, val);
- return 0;
- default:
- log_msg("Unsupported mode: %d", mode);
- return 1;
- }
-}
-
-int parse_macho(uint8_t *base_buf, size_t sz, output_fmt_t mode) {
- int i, j;
- struct mach_header header;
- uint8_t *buf = base_buf;
- int base_data_section = 0;
- int bits = 0;
-
- /* We can read in mach_header for 32 and 64 bit architectures
- * because it's identical to mach_header_64 except for the last
- * element (uint32_t reserved), which we don't use. Then, when
- * we know which architecture we're looking at, increment buf
- * appropriately.
- */
- memcpy(&header, buf, sizeof(struct mach_header));
-
- if (header.magic == MH_MAGIC) {
- if (header.cputype == CPU_TYPE_ARM
- || header.cputype == CPU_TYPE_X86) {
- bits = 32;
- buf += sizeof(struct mach_header);
- } else {
- log_msg("Bad cputype for object file. Currently only tested for CPU_TYPE_[ARM|X86].\n");
- goto bail;
- }
- } else if (header.magic == MH_MAGIC_64) {
- if (header.cputype == CPU_TYPE_X86_64) {
- bits = 64;
- buf += sizeof(struct mach_header_64);
- } else {
- log_msg("Bad cputype for object file. Currently only tested for CPU_TYPE_X86_64.\n");
- goto bail;
- }
- } else {
- log_msg("Bad magic number for object file. 0x%x or 0x%x expected, 0x%x found.\n",
- MH_MAGIC, MH_MAGIC_64, header.magic);
- goto bail;
- }
-
- if (header.filetype != MH_OBJECT) {
- log_msg("Bad filetype for object file. Currently only tested for MH_OBJECT.\n");
- goto bail;
- }
-
- for (i = 0; i < header.ncmds; i++) {
- struct load_command lc;
-
- memcpy(&lc, buf, sizeof(struct load_command));
-
- if (lc.cmd == LC_SEGMENT) {
- uint8_t *seg_buf = buf;
- struct section s;
- struct segment_command seg_c;
-
- memcpy(&seg_c, seg_buf, sizeof(struct segment_command));
- seg_buf += sizeof(struct segment_command);
-
- /* Although each section is given it's own offset, nlist.n_value
- * references the offset of the first section. This isn't
- * apparent without debug information because the offset of the
- * data section is the same as the first section. However, with
- * debug sections mixed in, the offset of the debug section
- * increases but n_value still references the first section.
- */
- if (seg_c.nsects < 1) {
- log_msg("Not enough sections\n");
- goto bail;
- }
-
- memcpy(&s, seg_buf, sizeof(struct section));
- base_data_section = s.offset;
- } else if (lc.cmd == LC_SEGMENT_64) {
- uint8_t *seg_buf = buf;
- struct section_64 s;
- struct segment_command_64 seg_c;
-
- memcpy(&seg_c, seg_buf, sizeof(struct segment_command_64));
- seg_buf += sizeof(struct segment_command_64);
-
- /* Explanation in LG_SEGMENT */
- if (seg_c.nsects < 1) {
- log_msg("Not enough sections\n");
- goto bail;
- }
-
- memcpy(&s, seg_buf, sizeof(struct section_64));
- base_data_section = s.offset;
- } else if (lc.cmd == LC_SYMTAB) {
- if (base_data_section != 0) {
- struct symtab_command sc;
- uint8_t *sym_buf = base_buf;
- uint8_t *str_buf = base_buf;
-
- memcpy(&sc, buf, sizeof(struct symtab_command));
-
- if (sc.cmdsize != sizeof(struct symtab_command)) {
- log_msg("Can't find symbol table!\n");
- goto bail;
- }
-
- sym_buf += sc.symoff;
- str_buf += sc.stroff;
-
- for (j = 0; j < sc.nsyms; j++) {
- /* Location of string is cacluated each time from the
- * start of the string buffer. On darwin the symbols
- * are prefixed by "_", so we bump the pointer by 1.
- * The target value is defined as an int in *_asm_*_offsets.c,
- * which is 4 bytes on all targets we currently use.
- */
- if (bits == 32) {
- struct nlist nl;
- int val;
-
- memcpy(&nl, sym_buf, sizeof(struct nlist));
- sym_buf += sizeof(struct nlist);
-
- memcpy(&val, base_buf + base_data_section + nl.n_value,
- sizeof(val));
- print_macho_equ(mode, str_buf + nl.n_un.n_strx + 1, val);
- } else { /* if (bits == 64) */
- struct nlist_64 nl;
- int val;
-
- memcpy(&nl, sym_buf, sizeof(struct nlist_64));
- sym_buf += sizeof(struct nlist_64);
-
- memcpy(&val, base_buf + base_data_section + nl.n_value,
- sizeof(val));
- print_macho_equ(mode, str_buf + nl.n_un.n_strx + 1, val);
- }
- }
- }
- }
-
- buf += lc.cmdsize;
- }
-
- return 0;
-bail:
- return 1;
-
-}
-
-#elif defined(__ELF__)
-#include "elf.h"
-
-#define COPY_STRUCT(dst, buf, ofst, sz) do {\
- if(ofst + sizeof((*(dst))) > sz) goto bail;\
- memcpy(dst, buf+ofst, sizeof((*(dst))));\
- } while(0)
-
-#define ENDIAN_ASSIGN(val, memb) do {\
- if(!elf->le_data) {log_msg("Big Endian data not supported yet!\n");goto bail;}\
- (val) = (memb);\
- } while(0)
-
-#define ENDIAN_ASSIGN_IN_PLACE(memb) do {\
- ENDIAN_ASSIGN(memb, memb);\
- } while(0)
-
-typedef struct {
- uint8_t *buf; /* Buffer containing ELF data */
- size_t sz; /* Buffer size */
- int le_data; /* Data is little-endian */
- unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
- int bits; /* 32 or 64 */
- Elf32_Ehdr hdr32;
- Elf64_Ehdr hdr64;
-} elf_obj_t;
-
-int parse_elf_header(elf_obj_t *elf) {
- int res;
- /* Verify ELF Magic numbers */
- COPY_STRUCT(&elf->e_ident, elf->buf, 0, elf->sz);
- res = elf->e_ident[EI_MAG0] == ELFMAG0;
- res &= elf->e_ident[EI_MAG1] == ELFMAG1;
- res &= elf->e_ident[EI_MAG2] == ELFMAG2;
- res &= elf->e_ident[EI_MAG3] == ELFMAG3;
- res &= elf->e_ident[EI_CLASS] == ELFCLASS32
- || elf->e_ident[EI_CLASS] == ELFCLASS64;
- res &= elf->e_ident[EI_DATA] == ELFDATA2LSB;
-
- if (!res) goto bail;
-
- elf->le_data = elf->e_ident[EI_DATA] == ELFDATA2LSB;
-
- /* Read in relevant values */
- if (elf->e_ident[EI_CLASS] == ELFCLASS32) {
- elf->bits = 32;
- COPY_STRUCT(&elf->hdr32, elf->buf, 0, elf->sz);
-
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_type);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_machine);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_version);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_entry);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_phoff);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_shoff);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_flags);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_ehsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_phentsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_phnum);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_shentsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_shnum);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr32.e_shstrndx);
- } else { /* if (elf->e_ident[EI_CLASS] == ELFCLASS64) */
- elf->bits = 64;
- COPY_STRUCT(&elf->hdr64, elf->buf, 0, elf->sz);
-
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_type);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_machine);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_version);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_entry);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_phoff);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_shoff);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_flags);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_ehsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_phentsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_phnum);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_shentsize);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_shnum);
- ENDIAN_ASSIGN_IN_PLACE(elf->hdr64.e_shstrndx);
- }
-
- return 0;
-bail:
- log_msg("Failed to parse ELF file header");
- return 1;
-}
-
-int parse_elf_section(elf_obj_t *elf, int idx, Elf32_Shdr *hdr32, Elf64_Shdr *hdr64) {
- if (hdr32) {
- if (idx >= elf->hdr32.e_shnum)
- goto bail;
-
- COPY_STRUCT(hdr32, elf->buf, elf->hdr32.e_shoff + idx * elf->hdr32.e_shentsize,
- elf->sz);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_name);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_type);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_flags);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_addr);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_offset);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_size);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_link);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_info);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_addralign);
- ENDIAN_ASSIGN_IN_PLACE(hdr32->sh_entsize);
- } else { /* if (hdr64) */
- if (idx >= elf->hdr64.e_shnum)
- goto bail;
-
- COPY_STRUCT(hdr64, elf->buf, elf->hdr64.e_shoff + idx * elf->hdr64.e_shentsize,
- elf->sz);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_name);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_type);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_flags);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_addr);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_offset);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_size);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_link);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_info);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_addralign);
- ENDIAN_ASSIGN_IN_PLACE(hdr64->sh_entsize);
- }
-
- return 0;
-bail:
- return 1;
-}
-
-const char *parse_elf_string_table(elf_obj_t *elf, int s_idx, int idx) {
- if (elf->bits == 32) {
- Elf32_Shdr shdr;
-
- if (parse_elf_section(elf, s_idx, &shdr, NULL)) {
- log_msg("Failed to parse ELF string table: section %d, index %d\n",
- s_idx, idx);
- return "";
- }
-
- return (char *)(elf->buf + shdr.sh_offset + idx);
- } else { /* if (elf->bits == 64) */
- Elf64_Shdr shdr;
-
- if (parse_elf_section(elf, s_idx, NULL, &shdr)) {
- log_msg("Failed to parse ELF string table: section %d, index %d\n",
- s_idx, idx);
- return "";
- }
-
- return (char *)(elf->buf + shdr.sh_offset + idx);
- }
-}
-
-int parse_elf_symbol(elf_obj_t *elf, unsigned int ofst, Elf32_Sym *sym32, Elf64_Sym *sym64) {
- if (sym32) {
- COPY_STRUCT(sym32, elf->buf, ofst, elf->sz);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_name);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_value);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_size);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_info);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_other);
- ENDIAN_ASSIGN_IN_PLACE(sym32->st_shndx);
- } else { /* if (sym64) */
- COPY_STRUCT(sym64, elf->buf, ofst, elf->sz);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_name);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_value);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_size);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_info);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_other);
- ENDIAN_ASSIGN_IN_PLACE(sym64->st_shndx);
- }
- return 0;
-bail:
- return 1;
-}
-
-int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode) {
- elf_obj_t elf;
- unsigned int ofst;
- int i;
- Elf32_Off strtab_off32;
- Elf64_Off strtab_off64; /* save String Table offset for later use */
-
- memset(&elf, 0, sizeof(elf));
- elf.buf = buf;
- elf.sz = sz;
-
- /* Parse Header */
- if (parse_elf_header(&elf))
- goto bail;
-
- if (elf.bits == 32) {
- Elf32_Shdr shdr;
- for (i = 0; i < elf.hdr32.e_shnum; i++) {
- parse_elf_section(&elf, i, &shdr, NULL);
-
- if (shdr.sh_type == SHT_STRTAB) {
- char strtsb_name[128];
-
- strcpy(strtsb_name, (char *)(elf.buf + shdr.sh_offset + shdr.sh_name));
-
- if (!(strcmp(strtsb_name, ".shstrtab"))) {
- /* log_msg("found section: %s\n", strtsb_name); */
- strtab_off32 = shdr.sh_offset;
- break;
- }
- }
- }
- } else { /* if (elf.bits == 64) */
- Elf64_Shdr shdr;
- for (i = 0; i < elf.hdr64.e_shnum; i++) {
- parse_elf_section(&elf, i, NULL, &shdr);
-
- if (shdr.sh_type == SHT_STRTAB) {
- char strtsb_name[128];
-
- strcpy(strtsb_name, (char *)(elf.buf + shdr.sh_offset + shdr.sh_name));
-
- if (!(strcmp(strtsb_name, ".shstrtab"))) {
- /* log_msg("found section: %s\n", strtsb_name); */
- strtab_off64 = shdr.sh_offset;
- break;
- }
- }
- }
- }
-
- /* Parse all Symbol Tables */
- if (elf.bits == 32) {
- Elf32_Shdr shdr;
- for (i = 0; i < elf.hdr32.e_shnum; i++) {
- parse_elf_section(&elf, i, &shdr, NULL);
-
- if (shdr.sh_type == SHT_SYMTAB) {
- for (ofst = shdr.sh_offset;
- ofst < shdr.sh_offset + shdr.sh_size;
- ofst += shdr.sh_entsize) {
- Elf32_Sym sym;
-
- parse_elf_symbol(&elf, ofst, &sym, NULL);
-
- /* For all OBJECTS (data objects), extract the value from the
- * proper data segment.
- */
- /* if (ELF32_ST_TYPE(sym.st_info) == STT_OBJECT && sym.st_name)
- log_msg("found data object %s\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name));
- */
-
- if (ELF32_ST_TYPE(sym.st_info) == STT_OBJECT
- && sym.st_size == 4) {
- Elf32_Shdr dhdr;
- int val = 0;
- char section_name[128];
-
- parse_elf_section(&elf, sym.st_shndx, &dhdr, NULL);
-
- /* For explanition - refer to _MSC_VER version of code */
- strcpy(section_name, (char *)(elf.buf + strtab_off32 + dhdr.sh_name));
- /* log_msg("Section_name: %s, Section_type: %d\n", section_name, dhdr.sh_type); */
-
- if (strcmp(section_name, ".bss")) {
- if (sizeof(val) != sym.st_size) {
- /* The target value is declared as an int in
- * *_asm_*_offsets.c, which is 4 bytes on all
- * targets we currently use. Complain loudly if
- * this is not true.
- */
- log_msg("Symbol size is wrong\n");
- goto bail;
- }
-
- memcpy(&val,
- elf.buf + dhdr.sh_offset + sym.st_value,
- sym.st_size);
- }
-
- if (!elf.le_data) {
- log_msg("Big Endian data not supported yet!\n");
- goto bail;
- }
-
- switch (mode) {
- case OUTPUT_FMT_RVDS:
- printf("%-40s EQU %5d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- break;
- case OUTPUT_FMT_GAS:
- printf(".equ %-40s, %5d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- break;
- case OUTPUT_FMT_C_HEADER:
- printf("#define %-40s %5d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- break;
- default:
- printf("%s = %d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- }
- }
- }
- }
- }
- } else { /* if (elf.bits == 64) */
- Elf64_Shdr shdr;
- for (i = 0; i < elf.hdr64.e_shnum; i++) {
- parse_elf_section(&elf, i, NULL, &shdr);
-
- if (shdr.sh_type == SHT_SYMTAB) {
- for (ofst = shdr.sh_offset;
- ofst < shdr.sh_offset + shdr.sh_size;
- ofst += shdr.sh_entsize) {
- Elf64_Sym sym;
-
- parse_elf_symbol(&elf, ofst, NULL, &sym);
-
- /* For all OBJECTS (data objects), extract the value from the
- * proper data segment.
- */
- /* if (ELF64_ST_TYPE(sym.st_info) == STT_OBJECT && sym.st_name)
- log_msg("found data object %s\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name));
- */
-
- if (ELF64_ST_TYPE(sym.st_info) == STT_OBJECT
- && sym.st_size == 4) {
- Elf64_Shdr dhdr;
- int val = 0;
- char section_name[128];
-
- parse_elf_section(&elf, sym.st_shndx, NULL, &dhdr);
-
- /* For explanition - refer to _MSC_VER version of code */
- strcpy(section_name, (char *)(elf.buf + strtab_off64 + dhdr.sh_name));
- /* log_msg("Section_name: %s, Section_type: %d\n", section_name, dhdr.sh_type); */
-
- if ((strcmp(section_name, ".bss"))) {
- if (sizeof(val) != sym.st_size) {
- /* The target value is declared as an int in
- * *_asm_*_offsets.c, which is 4 bytes on all
- * targets we currently use. Complain loudly if
- * this is not true.
- */
- log_msg("Symbol size is wrong\n");
- goto bail;
- }
-
- memcpy(&val,
- elf.buf + dhdr.sh_offset + sym.st_value,
- sym.st_size);
- }
-
- if (!elf.le_data) {
- log_msg("Big Endian data not supported yet!\n");
- goto bail;
- }
-
- switch (mode) {
- case OUTPUT_FMT_RVDS:
- printf("%-40s EQU %5d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- break;
- case OUTPUT_FMT_GAS:
- printf(".equ %-40s, %5d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- break;
- default:
- printf("%s = %d\n",
- parse_elf_string_table(&elf,
- shdr.sh_link,
- sym.st_name),
- val);
- }
- }
- }
- }
- }
- }
-
- if (mode == OUTPUT_FMT_RVDS)
- printf(" END\n");
-
- return 0;
-bail:
- log_msg("Parse error: File does not appear to be valid ELF32 or ELF64\n");
- return 1;
-}
-
-#endif
-#endif /* defined(__GNUC__) && __GNUC__ */
-
-
-#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__)
-/* See "Microsoft Portable Executable and Common Object File Format Specification"
- for reference.
-*/
-#define get_le32(x) ((*(x)) | (*(x+1)) << 8 |(*(x+2)) << 16 | (*(x+3)) << 24 )
-#define get_le16(x) ((*(x)) | (*(x+1)) << 8)
-
-int parse_coff(uint8_t *buf, size_t sz) {
- unsigned int nsections, symtab_ptr, symtab_sz, strtab_ptr;
- unsigned int sectionrawdata_ptr;
- unsigned int i;
- uint8_t *ptr;
- uint32_t symoffset;
-
- char **sectionlist; // this array holds all section names in their correct order.
- // it is used to check if the symbol is in .bss or .rdata section.
-
- nsections = get_le16(buf + 2);
- symtab_ptr = get_le32(buf + 8);
- symtab_sz = get_le32(buf + 12);
- strtab_ptr = symtab_ptr + symtab_sz * 18;
-
- if (nsections > 96) {
- log_msg("Too many sections\n");
- return 1;
- }
-
- sectionlist = malloc(nsections * sizeof(sectionlist));
-
- if (sectionlist == NULL) {
- log_msg("Allocating first level of section list failed\n");
- return 1;
- }
-
- // log_msg("COFF: Found %u symbols in %u sections.\n", symtab_sz, nsections);
-
- /*
- The size of optional header is always zero for an obj file. So, the section header
- follows the file header immediately.
- */
-
- ptr = buf + 20; // section header
-
- for (i = 0; i < nsections; i++) {
- char sectionname[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
- strncpy(sectionname, ptr, 8);
- // log_msg("COFF: Parsing section %s\n",sectionname);
-
- sectionlist[i] = malloc(strlen(sectionname) + 1);
-
- if (sectionlist[i] == NULL) {
- log_msg("Allocating storage for %s failed\n", sectionname);
- goto bail;
- }
- strcpy(sectionlist[i], sectionname);
-
- // check if it's .rdata and is not a COMDAT section.
- if (!strcmp(sectionname, ".rdata") &&
- (get_le32(ptr + 36) & 0x1000) == 0) {
- sectionrawdata_ptr = get_le32(ptr + 20);
- }
-
- ptr += 40;
- }
-
- // log_msg("COFF: Symbol table at offset %u\n", symtab_ptr);
- // log_msg("COFF: raw data pointer ofset for section .rdata is %u\n", sectionrawdata_ptr);
-
- /* The compiler puts the data with non-zero offset in .rdata section, but puts the data with
- zero offset in .bss section. So, if the data in in .bss section, set offset=0.
- Note from Wiki: In an object module compiled from C, the bss section contains
- the local variables (but not functions) that were declared with the static keyword,
- except for those with non-zero initial values. (In C, static variables are initialized
- to zero by default.) It also contains the non-local (both extern and static) variables
- that are also initialized to zero (either explicitly or by default).
- */
- // move to symbol table
- /* COFF symbol table:
- offset field
- 0 Name(*)
- 8 Value
- 12 SectionNumber
- 14 Type
- 16 StorageClass
- 17 NumberOfAuxSymbols
- */
- ptr = buf + symtab_ptr;
-
- for (i = 0; i < symtab_sz; i++) {
- int16_t section = get_le16(ptr + 12); // section number
-
- if (section > 0 && ptr[16] == 2) {
- // if(section > 0 && ptr[16] == 3 && get_le32(ptr+8)) {
-
- if (get_le32(ptr)) {
- char name[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
- strncpy(name, ptr, 8);
- // log_msg("COFF: Parsing symbol %s\n",name);
- /* The 64bit Windows compiler doesn't prefix with an _.
- * Check what's there, and bump if necessary
- */
- if (name[0] == '_')
- printf("%-40s EQU ", name + 1);
- else
- printf("%-40s EQU ", name);
- } else {
- // log_msg("COFF: Parsing symbol %s\n",
- // buf + strtab_ptr + get_le32(ptr+4));
- if ((buf + strtab_ptr + get_le32(ptr + 4))[0] == '_')
- printf("%-40s EQU ",
- buf + strtab_ptr + get_le32(ptr + 4) + 1);
- else
- printf("%-40s EQU ", buf + strtab_ptr + get_le32(ptr + 4));
- }
-
- if (!(strcmp(sectionlist[section - 1], ".bss"))) {
- symoffset = 0;
- } else {
- symoffset = get_le32(buf + sectionrawdata_ptr + get_le32(ptr + 8));
- }
-
- // log_msg(" Section: %d\n",section);
- // log_msg(" Class: %d\n",ptr[16]);
- // log_msg(" Address: %u\n",get_le32(ptr+8));
- // log_msg(" Offset: %u\n", symoffset);
-
- printf("%5d\n", symoffset);
- }
-
- ptr += 18;
- }
-
- printf(" END\n");
-
- for (i = 0; i < nsections; i++) {
- free(sectionlist[i]);
- }
-
- free(sectionlist);
-
- return 0;
-bail:
-
- for (i = 0; i < nsections; i++) {
- free(sectionlist[i]);
- }
-
- free(sectionlist);
-
- return 1;
-}
-#endif /* defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__) */
-
-int main(int argc, char **argv) {
- output_fmt_t mode = OUTPUT_FMT_PLAIN;
- const char *f;
- uint8_t *file_buf;
- int res;
- FILE *fp;
- long int file_size;
-
- if (argc < 2 || argc > 3) {
- fprintf(stderr, "Usage: %s [output format] <obj file>\n\n", argv[0]);
- fprintf(stderr, " <obj file>\tobject file to parse\n");
- fprintf(stderr, "Output Formats:\n");
- fprintf(stderr, " gas - compatible with GNU assembler\n");
- fprintf(stderr, " rvds - compatible with armasm\n");
- fprintf(stderr, " cheader - c/c++ header file\n");
- goto bail;
- }
-
- f = argv[2];
-
- if (!strcmp(argv[1], "rvds"))
- mode = OUTPUT_FMT_RVDS;
- else if (!strcmp(argv[1], "gas"))
- mode = OUTPUT_FMT_GAS;
- else if (!strcmp(argv[1], "cheader"))
- mode = OUTPUT_FMT_C_HEADER;
- else
- f = argv[1];
-
- fp = fopen(f, "rb");
-
- if (!fp) {
- perror("Unable to open file");
- goto bail;
- }
-
- if (fseek(fp, 0, SEEK_END)) {
- perror("stat");
- goto bail;
- }
-
- file_size = ftell(fp);
- file_buf = malloc(file_size);
-
- if (!file_buf) {
- perror("malloc");
- goto bail;
- }
-
- rewind(fp);
-
- if (fread(file_buf, sizeof(char), file_size, fp) != file_size) {
- perror("read");
- goto bail;
- }
-
- if (fclose(fp)) {
- perror("close");
- goto bail;
- }
-
-#if defined(__GNUC__) && __GNUC__
-#if defined(__MACH__)
- res = parse_macho(file_buf, file_size, mode);
-#elif defined(__ELF__)
- res = parse_elf(file_buf, file_size, mode);
-#endif
-#endif
-#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__)
- res = parse_coff(file_buf, file_size);
-#endif
-
- free(file_buf);
-
- if (!res)
- return EXIT_SUCCESS;
-
-bail:
- return EXIT_FAILURE;
-}
projects / libvpx / commitdiff