1b7dd394fe
ysyx_22040000 李心杨 Linux calcite 6.6.19 #1-NixOS SMP PREEMPT_DYNAMIC Fri Mar 1 12:35:11 UTC 2024 x86_64 GNU/Linux 00:25:34 up 2 days 14:01, 2 users, load average: 0.46, 0.24, 0.27
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
#include <common.h>
|
|
#include <elf.h>
|
|
|
|
// Put this into another file
|
|
#ifdef CONFIG_FTRACE
|
|
// static vaddr_t g_function_stack[CONFIG_FTRACE_STACK_SIZE] = {0};
|
|
#endif
|
|
|
|
#define FAILED_GOTO(tag, exp) do {if((exp)) goto tag;} while(0)
|
|
|
|
void init_elf(const char *path) {
|
|
FILE *elf_file = fopen(path, "rb");
|
|
Elf32_Ehdr header;
|
|
Elf32_Shdr section_header[200], *psh;
|
|
FAILED_GOTO(failed_nosym, fread(&header, sizeof(Elf32_Ehdr), 1, elf_file) <= 0);
|
|
FAILED_GOTO(failed_nosym, fseek(elf_file, header.e_shoff, SEEK_SET) != 0);
|
|
printf("%hu %hu %u\n", header.e_shentsize, header.e_shnum, header.e_shoff);
|
|
FAILED_GOTO(failed_nosym, fread(section_header, header.e_shentsize, header.e_shnum, elf_file) <= 0);
|
|
|
|
Elf32_Shdr *symtab = NULL, *strtab = NULL;
|
|
for(int i = 0; i < header.e_shnum; i++) {
|
|
psh = section_header + i;
|
|
if (psh->sh_type == SHT_SYMTAB) {
|
|
symtab = psh;
|
|
break;
|
|
} else if (psh->sh_type == SHT_STRTAB) {
|
|
strtab = psh;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
int sym_length = symtab->sh_size / sizeof(Elf32_Sym);
|
|
Elf32_Sym *sym = calloc(sym_length, sizeof(Elf32_Sym));
|
|
FAILED_GOTO(failed, fseek(elf_file, symtab->sh_offset, SEEK_SET) != 0);
|
|
FAILED_GOTO(failed, fread(sym, sizeof(Elf32_Sym), sym_length, elf_file) <= 0);
|
|
for(int j = 0; j < sym_length; j++) {
|
|
if(ELF32_ST_TYPE(sym[j].st_info) != STT_FUNC) continue;
|
|
// Only read function type symbol
|
|
char func[30];
|
|
FAILED_GOTO(failed, fseek(elf_file, strtab->sh_offset + sym[j].st_name, SEEK_SET) != 0);
|
|
FAILED_GOTO(failed, fgets(func, 30, elf_file) <= 0);
|
|
puts(func);
|
|
}
|
|
free(sym);
|
|
return;
|
|
failed:
|
|
free(sym);
|
|
failed_nosym:
|
|
Error("Failed reading elf file");
|
|
}
|