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> compile NEMU

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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
 17:38:26  up   4:44,  2 users,  load average: 0.67, 0.30, 0.25
This commit is contained in:
tracer-ysyx 2024-03-20 17:38:26 +08:00 committed by xinyangli
parent be9ae806d9
commit 5aee73e34d
1 changed files with 18 additions and 13 deletions
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31
nemu/src/utils/ftrace.c
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@ -28,13 +28,12 @@ const char *get_func_name(vaddr_t addr) {
} }
void init_elf(const char *path) { void init_elf(const char *path) {
bool success = false;
FILE *elf_file = fopen(path, "rb"); FILE *elf_file = fopen(path, "rb");
Elf32_Ehdr header; Elf32_Ehdr header;
Elf32_Shdr section_header[200], *psh; Elf32_Shdr section_header[200], *psh;
func_table = (func_t *)calloc(func_table_size, sizeof(func_t)); func_table = (func_t *)calloc(func_table_size, sizeof(func_t));
FAILED_GOTO(failed_nosym, func_table == NULL); assert(func_table);
FAILED_GOTO(failed_nosym, fread(&header, sizeof(Elf32_Ehdr), 1, elf_file) <= 0); 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); FAILED_GOTO(failed_nosym, fseek(elf_file, header.e_shoff, SEEK_SET) != 0);
@ -56,7 +55,7 @@ void init_elf(const char *path) {
int sym_length = symtab->sh_size / sizeof(Elf32_Sym); int sym_length = symtab->sh_size / sizeof(Elf32_Sym);
Elf32_Sym *sym = calloc(sym_length, sizeof(Elf32_Sym)); Elf32_Sym *sym = calloc(sym_length, sizeof(Elf32_Sym));
FAILED_GOTO(failed_nosym, sym == NULL); assert(sym);
FAILED_GOTO(failed, fseek(elf_file, symtab->sh_offset, SEEK_SET) != 0); 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); FAILED_GOTO(failed, fread(sym, sizeof(Elf32_Sym), sym_length, elf_file) <= 0);
@ -79,17 +78,23 @@ void init_elf(const char *path) {
} }
} }
qsort(func_table, func_table_len, sizeof(func_t), cmp_func_t); qsort(func_table, func_table_len, sizeof(func_t), cmp_func_t);
success = true; goto success;
success:
free(sym);
free(shstrtab);
return;
failed: failed:
// for(int i = 0; i < func_table_len; i++) { free(sym);
// func_t *f = &func_table[i];
// if(f->name) { free(f->name); }
// }
// free(func_table);
// free(sym);
failed_shstrtab: failed_shstrtab:
// free(shstrtab); free(shstrtab);
failed_nosym: failed_nosym:
if(success) return; for(int i = 0; i < func_table_len; i++) {
else Error("Failed reading elf file"); func_t *f = &func_table[i];
if(f->name) { free(f->name); }
}
free(func_table);
Error("Failed reading elf file");
return;
} }