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> compile NEMU

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221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 00:15:29 up 5 days, 12:23,  3 users,  load average: 0.97, 0.62, 0.50
This commit is contained in:
tracer-ics2023
2024-09-11 00:15:30 +08:00
committed by zzy
parent aab675e6f4
commit 67b6f8d078
1 changed files with 6 additions and 7 deletions
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13
nemu/src/monitor/elf.c
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@ -82,31 +82,30 @@ void init_elf(const char* elf_file) {
if (shdr[i].sh_type == SHT_SYMTAB) { if (shdr[i].sh_type == SHT_SYMTAB) {
fseek(fp, shdr[i].sh_offset, SEEK_SET); fseek(fp, shdr[i].sh_offset, SEEK_SET);
assert(shdr[i].sh_size % sizeof(Elf_Sym) == 0); assert(shdr[i].sh_size % sizeof(Elf_Sym) == 0);
symt_len = shdr[i].sh_entsize; symt_len = shdr[i].sh_size / shdr[i].sh_entsize;
Elf_Sym sym[symt_len]; Elf_Sym sym[symt_len];
ret = fread(sym, shdr[i].sh_size, 1, fp); ret = fread(sym, shdr[i].sh_size, 1, fp);
assert(ret == 1); assert(ret == 1);
psymt = sym; psymt = sym;
Log("SYMTAB %08x %06x %06x", shdr[i].sh_addr, shdr[i].sh_offset, shdr[i].sh_size); // Log("SYMTAB %08x %06x %06x", shdr[i].sh_addr, shdr[i].sh_offset, shdr[i].sh_size);
} else if (shdr[i].sh_type == SHT_STRTAB && shdr[i].sh_flags != 0) { } else if (shdr[i].sh_type == SHT_STRTAB && shdr[i].sh_name != ehdr.e_shstrndx) {
strt_sz = shdr[i].sh_size; strt_sz = shdr[i].sh_size;
fseek(fp, shdr[i].sh_offset, SEEK_SET); fseek(fp, shdr[i].sh_offset, SEEK_SET);
char buffer[strt_sz]; char buffer[strt_sz];
ret = fread(buffer, strt_sz, 1, fp); ret = fread(buffer, strt_sz, 1, fp);
assert(ret == 1); assert(ret == 1);
pstrt = buffer; pstrt = buffer;
Log("SHT_STRTAB %08x %06x %06x", shdr[i].sh_addr, shdr[i].sh_offset, shdr[i].sh_size); // Log("SHT_STRTAB %08x %06x %06x", shdr[i].sh_addr, shdr[i].sh_offset, shdr[i].sh_size);
} }
} }
// filling ftrace // filling ftrace
assert(pstrt != NULL && pstrt != NULL); assert(pstrt != NULL && pstrt != NULL);
for (int i = 0; i < symt_len; i ++) { for (int i = 0; i < symt_len; i ++) {
Log("---LOG: %3d: %08x %5u %x", i, psymt[i].st_value, psymt[i].st_size, psymt[i].st_name);
if (ELF_ST_TYPE(psymt[i].st_info) == STT_FUNC) { if (ELF_ST_TYPE(psymt[i].st_info) == STT_FUNC) {
// Warning due to elf_ftrace is global variable so you don't need to set '\0' in the end // Warning due to elf_ftrace is global variable so you don't need to set '\0' in the end
// strncpy(elf_ftrace[elf_ftrace_size].fname, pstrt + psymt[i].st_name, strncpy(elf_ftrace[elf_ftrace_size].fname, pstrt + psymt[i].st_name,
// sizeof(elf_ftrace[0].fname) - 1); sizeof(elf_ftrace[0].fname) - 1);
elf_ftrace[elf_ftrace_size].start = psymt[i].st_value; elf_ftrace[elf_ftrace_size].start = psymt[i].st_value;
elf_ftrace[elf_ftrace_size].size = psymt[i].st_size; elf_ftrace[elf_ftrace_size].size = psymt[i].st_size;
elf_ftrace[elf_ftrace_size].end = psymt[i].st_value + psymt[i].st_size - 1; elf_ftrace[elf_ftrace_size].end = psymt[i].st_value + psymt[i].st_size - 1;