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Handle elf_phdr/elf_shdr enums in elf.c

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... and refactor a little.
This commit is contained in:
deffi420 2016-01-26 02:26:24 +02:00 committed by pancake
parent 028df44c9d
commit f4bce2b425
1 changed files with 39 additions and 13 deletions
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52
libr/bin/format/elf/elf.c
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@ -61,6 +61,7 @@ static int init_ehdr(struct Elf_(r_bin_elf_obj_t) *bin) {
" EM_V850=87, EM_M32R=88, EM_MN10300=89, EM_MN10200=90, EM_PJ=91,"
" EM_OPENRISC=92, EM_ARC_A5=93, EM_XTENSA=94, EM_NUM=95};", 0);
sdb_num_set (bin->kv, "elf_header.offset", 0, 0);
sdb_num_set (bin->kv, "elf_header_size.offset", sizeof (Elf_(Ehdr)), 0);
#if R_BIN_ELF64
sdb_set (bin->kv, "elf_header.format", "[16]z[2]E[2]Exqqqxwwwwww"
" ident (elf_type)type (elf_machine)machine version entry phoff shoff flags ehsize"
@ -85,6 +86,9 @@ static int init_ehdr(struct Elf_(r_bin_elf_obj_t) *bin) {
return false;
}
return handle_e_ident (bin);
// Usage example:
// > td `k bin/cur/info/elf_type.cparse`; td `k bin/cur/info/elf_machine.cparse`
// > pf `k bin/cur/info/elf_header.format` @ `k bin/cur/info/elf_header.offset`
}
static int init_phdr(struct Elf_(r_bin_elf_obj_t) *bin) {
@ -120,25 +124,28 @@ static int init_phdr(struct Elf_(r_bin_elf_obj_t) *bin) {
R_FREE (bin->phdr);
return false;
}
sdb_num_set (bin->kv, "elf_header_size.offset", sizeof (Elf_(Ehdr)), 0);
sdb_num_set (bin->kv, "elf_phdr.offset", bin->ehdr.e_phoff, 0);
sdb_num_set (bin->kv, "elf_phdr_size.offset", sizeof (Elf_(Phdr)), 0);
sdb_num_set (bin->kv, "elf_shdr_size.offset", sizeof (Elf_(Shdr)), 0);
sdb_set (bin->kv, "elf_p_type.cparse", "enum elf_p_type {PT_NULL=0,PT_LOAD=1,PT_DYNAMIC=2,"
"PT_INERP=3,PT_NOTE=4,PT_SHLIB=5,PT_PHDR=6,PT_LOOS=0x60000000,"
"PT_HIOS=0x6fffffff,PT_LOPROC=0x70000000,PT_HIPROC=0x7fffffff};", 0);
sdb_set (bin->kv, "elf_p_flags.cparse", "enum elf_p_flags {PF_None=0,PF_Exec=1,"
"PF_Write=2,PF_Write_Exec=3,PF_Read=4,PF_Read_Exec=5,PF_Read_Write=6,"
"PF_Read_Write_Exec=7};", 0);
#if R_BIN_ELF64
sdb_num_set (bin->kv, "elf_phdr.offset", bin->ehdr.e_phoff, 0);
sdb_set (bin->kv, "elf_phdr.format", "[4]E[4]Eqqqqqq (elf_p_type)type (elf_p_flags)flags offset vaddr paddr filesz memsz align", 0);
sdb_num_set (bin->kv, "elf_shdr.offset", bin->ehdr.e_shoff, 0);
sdb_set (bin->kv, "elf_shdr.format", "x[4]E[8]Eqqqxxqq name (elf_s_type)type (elf_s_flags_64)flags addr offset size link info addralign entsize", 0);
sdb_set (bin->kv, "elf_phdr.format", "[4]E[4]Eqqqqqq (elf_p_type)type (elf_p_flags)flags"
" offset vaddr paddr filesz memsz align", 0);
#else
sdb_num_set (bin->kv, "elf_phdr.offset", bin->ehdr.e_phoff, 0);
sdb_set (bin->kv, "elf_phdr.format", "[4]Exxxxx[4]Ex (elf_p_type)type offset vaddr paddr filesz memsz (elf_p_flags)flags align", 0);
sdb_num_set (bin->kv, "elf_shdr.offset", bin->ehdr.e_shoff, 0);
sdb_set (bin->kv, "elf_shdr.format", "x[4]E[4]Exxxxxxx name (elf_s_type)type (elf_s_flags_32)flags addr offset size link info addralign entsize", 0);
sdb_set (bin->kv, "elf_phdr.format", "[4]Exxxxx[4]Ex (elf_p_type)type offset vaddr paddr"
" filesz memsz (elf_p_flags)flags align", 0);
#endif
// Usage example:
// > pf `k bin/cur/info/elf.phdr.format` @ `k bin/cur/info/elf.phdr.offset`
return true;
// Usage example:
// > td `k bin/cur/info/elf_p_type.cparse`; td `k bin/cur/info/elf_p_flags.cparse`
// > pf `k bin/cur/info/elf_phdr.format` @ `k bin/cur/info/elf_phdr.offset`
}
static int init_shdr(struct Elf_(r_bin_elf_obj_t) *bin) {
ut32 shdr_size;
int len;
@ -158,20 +165,39 @@ static int init_shdr(struct Elf_(r_bin_elf_obj_t) *bin) {
perror ("malloc (shdr)");
return false;
}
sdb_num_set (bin->kv, "elf_shdr.offset", bin->ehdr.e_shoff, 0);
sdb_num_set (bin->kv, "elf_shdr_size.offset", sizeof (Elf_(Shdr)), 0);
sdb_set (bin->kv, "elf_s_type.cparse", "enum elf_s_type {SHT_NULL=0,SHT_PROGBITS=1,"
"SHT_SYMTAB=2,SHT_STRTAB=3,SHT_RELA=4,SHT_HASH=5,SHT_DYNAMIC=6,SHT_NOTE=7,"
"SHT_NOBITS=8,SHT_REL=9,SHT_SHLIB=10,SHT_DYNSYM=11,SHT_LOOS=0x60000000,"
"SHT_HIOS=0x6fffffff,SHT_LOPROC=0x70000000,SHT_HIPROC=0x7fffffff};", 0);
#if R_BIN_ELF64
sdb_set (bin->kv, "elf_s_flags_64.cparse", "enum elf_s_flags_64 {SF64_None=0,SF64_Exec=1,"
"SF64_Alloc=2,SF64_Alloc_Exec=3,SF64_Write=4,SF64_Write_Exec=5,"
"SF64_Write_Alloc=6,SF64_Write_Alloc_Exec=7};", 0);
sdb_set (bin->kv, "elf_shdr.format", "x[4]E[8]Eqqqxxqq name (elf_s_type)type"
" (elf_s_flags_64)flags addr offset size link info addralign entsize", 0);
len = r_buf_fread_at (bin->b, bin->ehdr.e_shoff, (ut8*)bin->shdr,
bin->endian ? "2I4L2I2L" : "2i4l2i2l", bin->ehdr.e_shnum);
#else
sdb_set (bin->kv, "elf_s_flags_32.cparse", "enum elf_s_flags_32 {SF32_None=0,SF32_Exec=1,"
"SF32_Alloc=2,SF32_Alloc_Exec=3,SF32_Write=4,SF32_Write_Exec=5,"
"SF32_Write_Alloc=6,SF32_Write_Alloc_Exec=7};", 0);
sdb_set (bin->kv, "elf_shdr.format", "x[4]E[4]Exxxxxxx name (elf_s_type)type"
" (elf_s_flags_32)flags addr offset size link info addralign entsize", 0);
len = r_buf_fread_at (bin->b, bin->ehdr.e_shoff, (ut8*)bin->shdr,
bin->endian ? "10I" : "10i", bin->ehdr.e_shnum);
#endif
if (len < 1) {
eprintf ("Warning: read (shdr) at 0x%"PFMT64x"\n", (ut64) bin->ehdr.e_shoff);
R_FREE (bin->shdr);
return false;
}
return true;
// Usage example:
// > td `k bin/cur/info/elf_s_type.cparse`; td `k bin/cur/info/elf_s_flags_64.cparse`
// > pf `k bin/cur/info/elf_shdr.format` @ `k bin/cur/info/elf_shdr.offset`
}
static int init_strtab(struct Elf_(r_bin_elf_obj_t) *bin) {