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elfdump: Improve section type reporting

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The SHT range 0x70000000-0x7fffffff is processor-specific.  Pass the
ELF machine type header to sh_types so the section header type name can
be reported correctly for the given processor.

For all ranges report the actual value for unknown types.

Add MIPS-specific type SHT_MIPS_OPTIONS.

CR:		D483
Reviewed by:	sbruno, marcel
Sponsored by:	DARPA, AFRL
This commit is contained in:
Ed Maste 2014-07-25 18:20:56 +00:00
parent c14beb6822
commit b385405966
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=269092
1 changed files with 73 additions and 35 deletions
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108
usr.bin/elfdump/elfdump.c
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@ -303,40 +303,76 @@ static const char *p_flags[] = {
/* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */
static const char *
sh_types(u_int64_t sht) {
switch (sht) {
case 0: return "SHT_NULL";
case 1: return "SHT_PROGBITS";
case 2: return "SHT_SYMTAB";
case 3: return "SHT_STRTAB";
case 4: return "SHT_RELA";
case 5: return "SHT_HASH";
case 6: return "SHT_DYNAMIC";
case 7: return "SHT_NOTE";
case 8: return "SHT_NOBITS";
case 9: return "SHT_REL";
case 10: return "SHT_SHLIB";
case 11: return "SHT_DYNSYM";
case 14: return "SHT_INIT_ARRAY";
case 15: return "SHT_FINI_ARRAY";
case 16: return "SHT_PREINIT_ARRAY";
case 17: return "SHT_GROUP";
case 18: return "SHT_SYMTAB_SHNDX";
/* 0x60000000 - 0x6fffffff operating system-specific semantics */
case 0x6ffffff0: return "XXX:VERSYM";
case 0x6ffffff4: return "SHT_SUNW_dof";
case 0x6ffffff7: return "SHT_GNU_LIBLIST";
case 0x6ffffffc: return "XXX:VERDEF";
case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef";
case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed";
case 0x6fffffff: return "SHT_SUNW(GNU)_versym";
/* 0x70000000 - 0x7fffffff processor-specific semantics */
case 0x70000000: return "SHT_IA_64_EXT";
case 0x70000001: return "SHT_IA_64_UNWIND";
case 0x7ffffffd: return "XXX:AUXILIARY";
case 0x7fffffff: return "XXX:FILTER";
/* 0x80000000 - 0xffffffff application programs */
default: return "ERROR: SHT NOT DEFINED";
sh_types(uint64_t machine, uint64_t sht) {
static char unknown_buf[64];
if (sht < 0x60000000) {
switch (sht) {
case 0: return "SHT_NULL";
case 1: return "SHT_PROGBITS";
case 2: return "SHT_SYMTAB";
case 3: return "SHT_STRTAB";
case 4: return "SHT_RELA";
case 5: return "SHT_HASH";
case 6: return "SHT_DYNAMIC";
case 7: return "SHT_NOTE";
case 8: return "SHT_NOBITS";
case 9: return "SHT_REL";
case 10: return "SHT_SHLIB";
case 11: return "SHT_DYNSYM";
case 14: return "SHT_INIT_ARRAY";
case 15: return "SHT_FINI_ARRAY";
case 16: return "SHT_PREINIT_ARRAY";
case 17: return "SHT_GROUP";
case 18: return "SHT_SYMTAB_SHNDX";
}
snprintf(unknown_buf, sizeof(unknown_buf),
"ERROR: SHT %ju NOT DEFINED", (uintmax_t)sht);
return (unknown_buf);
} else if (sht < 0x70000000) {
/* 0x60000000-0x6fffffff operating system-specific semantics */
switch (sht) {
case 0x6ffffff0: return "XXX:VERSYM";
case 0x6ffffff4: return "SHT_SUNW_dof";
case 0x6ffffff7: return "SHT_GNU_LIBLIST";
case 0x6ffffffc: return "XXX:VERDEF";
case 0x6ffffffd: return "SHT_SUNW(GNU)_verdef";
case 0x6ffffffe: return "SHT_SUNW(GNU)_verneed";
case 0x6fffffff: return "SHT_SUNW(GNU)_versym";
}
snprintf(unknown_buf, sizeof(unknown_buf),
"ERROR: OS-SPECIFIC SHT 0x%jx NOT DEFINED",
(uintmax_t)sht);
return (unknown_buf);
} else if (sht < 0x80000000) {
/* 0x70000000-0x7fffffff processor-specific semantics */
switch (machine) {
case EM_MIPS:
switch (sht) {
case 0x7000000d: return "SHT_MIPS_OPTIONS";
}
break;
case EM_IA_64:
switch (sht) {
case 0x70000000: return "SHT_IA_64_EXT";
case 0x70000001: return "SHT_IA_64_UNWIND";
}
break;
}
switch (sht) {
case 0x7ffffffd: return "XXX:AUXILIARY";
case 0x7fffffff: return "XXX:FILTER";
}
snprintf(unknown_buf, sizeof(unknown_buf),
"ERROR: PROCESSOR-SPECIFIC SHT 0x%jx NOT DEFINED",
(uintmax_t)sht);
return (unknown_buf);
} else {
/* 0x80000000-0xffffffff application programs */
snprintf(unknown_buf, sizeof(unknown_buf),
"ERROR: SHT 0x%jx NOT DEFINED",
(uintmax_t)sht);
return (unknown_buf);
}
}
@ -704,6 +740,7 @@ elf_print_shdr(Elf32_Ehdr *e, void *sh)
u_int64_t info;
u_int64_t addralign;
u_int64_t entsize;
u_int64_t machine;
void *v;
int i;
@ -712,6 +749,7 @@ elf_print_shdr(Elf32_Ehdr *e, void *sh)
return;
}
machine = elf_get_quarter(e, e, E_MACHINE);
shentsize = elf_get_quarter(e, e, E_SHENTSIZE);
shnum = elf_get_shnum(e, sh);
fprintf(out, "\nsection header:\n");
@ -730,7 +768,7 @@ elf_print_shdr(Elf32_Ehdr *e, void *sh)
fprintf(out, "\n");
fprintf(out, "entry: %d\n", i);
fprintf(out, "\tsh_name: %s\n", shstrtab + name);
fprintf(out, "\tsh_type: %s\n", sh_types(type));
fprintf(out, "\tsh_type: %s\n", sh_types(machine, type));
fprintf(out, "\tsh_flags: %s\n", sh_flags[flags & 0x7]);
fprintf(out, "\tsh_addr: %#jx\n", addr);
fprintf(out, "\tsh_offset: %jd\n", (intmax_t)offset);