mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-05-23 05:42:29 +00:00
Make changes needed for new demo
This commit is contained in:
Justine Tunney
parent
c3440d040c
commit
e6b7c16a53
13 changed files with 96 additions and 47 deletions
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@ -105,6 +105,7 @@ static void printelfehdr(void) {
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static void printelfsegmentheader(int i) {
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Elf64_Phdr *phdr = GetElfSegmentHeaderAddress(elf, st->st_size, i);
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if (!phdr) return;
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printf("/\tElf64_Phdr *phdr = GetElfSegmentHeaderAddress(elf, st->st_size, "
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"%d)\n",
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i);
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@ -133,6 +134,7 @@ static void printelfsegmentheaders(void) {
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static void printelfsectionheader(int i, char *shstrtab) {
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Elf64_Shdr *shdr;
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shdr = GetElfSectionHeaderAddress(elf, st->st_size, i);
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if (!shdr) return;
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printf("/\tElf64_Shdr *shdr = GetElfSectionHeaderAddress(elf, st->st_size, "
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"%d)\n",
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i);
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@ -160,7 +162,11 @@ static void printelfsectionheader(int i, char *shstrtab) {
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static void printelfsectionheaders(void) {
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Elf64_Half i;
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char *shstrtab;
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const char *str;
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Elf64_Shdr *shdr, *shshdr;
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shshdr = GetElfSectionHeaderAddress(elf, st->st_size, elf->e_shstrndx);
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shstrtab = GetElfSectionNameStringTable(elf, st->st_size);
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if (!shshdr || !shstrtab) return;
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if (shstrtab) {
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printf("\n");
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printf("\t.org\t%#x\n", elf->e_shoff);
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@ -168,12 +174,11 @@ static void printelfsectionheaders(void) {
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printelfsectionheader(i, shstrtab);
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}
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printf("\n/\t%s\n", "elf->e_shstrndx");
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printf("\t.org\t%#x\n",
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GetElfSectionHeaderAddress(elf, st->st_size, elf->e_shstrndx)
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->sh_offset);
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printf("\t.org\t%#x\n", shshdr->sh_offset);
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for (i = 0; i < elf->e_shnum; ++i) {
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Elf64_Shdr *shdr = GetElfSectionHeaderAddress(elf, st->st_size, i);
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const char *str = GetElfString(elf, st->st_size, shstrtab, shdr->sh_name);
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shdr = GetElfSectionHeaderAddress(elf, st->st_size, i);
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if (!shdr) break;
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str = GetElfString(elf, st->st_size, shstrtab, shdr->sh_name);
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show(".asciz", format(b1, "%`'s", str), NULL);
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}
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}
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@ -182,13 +187,18 @@ static void printelfsectionheaders(void) {
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static void printelfgroups(void) {
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for (int i = 0; i < elf->e_shnum; ++i) {
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Elf64_Shdr *shdr = GetElfSectionHeaderAddress(elf, st->st_size, i);
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if (!shdr) break;
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if (shdr->sh_type == SHT_GROUP) {
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const Elf64_Shdr *symhdr =
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GetElfSectionHeaderAddress(elf, st->st_size, shdr->sh_link);
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if (!symhdr) break;
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const Elf64_Shdr *strhdr =
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GetElfSectionHeaderAddress(elf, st->st_size, symhdr->sh_link);
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if (!strhdr) break;
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Elf64_Sym *syms = GetElfSectionAddress(elf, st->st_size, symhdr);
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if (!syms) break;
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char *strs = GetElfSectionAddress(elf, st->st_size, strhdr);
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if (!strs) break;
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printf("\n");
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printf("//\t%s group\n",
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GetElfString(elf, st->st_size, strs, syms[shdr->sh_info].st_name));
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@ -206,9 +216,11 @@ static void printelfgroups(void) {
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const Elf64_Shdr *section =
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GetElfSectionHeaderAddress(elf, st->st_size, READ32LE(p));
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printf("\t.long\t%#x\t\t\t# %s\n", READ32LE(p),
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GetElfString(elf, st->st_size,
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GetElfSectionNameStringTable(elf, st->st_size),
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section->sh_name));
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section ? GetElfString(
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elf, st->st_size,
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GetElfSectionNameStringTable(elf, st->st_size),
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section->sh_name)
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: 0);
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}
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shdr->sh_offset;
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}
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@ -244,14 +256,15 @@ static void printelfsymbol(Elf64_Sym *sym, char *strtab, char *shstrtab) {
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GetElfString(elf, st->st_size, strtab, sym->st_name)));
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printelfsymbolinfo(sym);
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printelfsymbolother(sym);
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Elf64_Shdr *shdr =
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GetElfSectionHeaderAddress(elf, st->st_size, sym->st_shndx);
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show(".short", format(b1, "%d", sym->st_shndx),
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format(b2, "%s sym->st_shndx",
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sym->st_shndx < 0xff00
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? format(b1, "%`'s",
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GetElfString(elf, st->st_size, shstrtab,
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GetElfSectionHeaderAddress(
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elf, st->st_size, sym->st_shndx)
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->sh_name))
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shdr ? GetElfString(elf, st->st_size, shstrtab,
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shdr->sh_name)
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: 0)
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: findnamebyid(kElfSpecialSectionNames, sym->st_shndx)));
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show(".quad", format(b1, "%#x", sym->st_value), "sym->st_value");
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show(".quad", format(b1, "%#x", sym->st_size), "sym->st_size");
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@ -260,13 +273,14 @@ static void printelfsymbol(Elf64_Sym *sym, char *strtab, char *shstrtab) {
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static void printelfsymboltable(void) {
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size_t i, symcount = 0;
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Elf64_Sym *symtab = GetElfSymbolTable(elf, st->st_size, &symcount);
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if (!symtab) return;
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char *strtab = GetElfStringTable(elf, st->st_size);
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char *shstrtab = GetElfSectionNameStringTable(elf, st->st_size);
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if (symtab && strtab) {
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printf("\n\n");
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printf("\t.org\t%#x\n", (intptr_t)symtab - (intptr_t)elf);
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for (i = 0; i < symcount; ++i) {
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printf(".Lsym%d:\n", i);
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printf("\n\n");
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printf("\t.org\t%#x\n", (intptr_t)symtab - (intptr_t)elf);
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for (i = 0; i < symcount; ++i) {
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printf(".Lsym%d:\n", i);
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if (strtab && shstrtab) {
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printelfsymbol(&symtab[i], strtab, shstrtab);
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}
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}
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@ -275,13 +289,14 @@ static void printelfsymboltable(void) {
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static void printelfdynsymboltable(void) {
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size_t i, symcount = 0;
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Elf64_Sym *symtab = GetElfDynSymbolTable(elf, st->st_size, &symcount);
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if (!symtab) return;
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char *strtab = GetElfDynStringTable(elf, st->st_size);
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char *shstrtab = GetElfSectionNameStringTable(elf, st->st_size);
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if (symtab && strtab) {
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printf("\n\n");
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printf("\t.org\t%#x\n", (intptr_t)symtab - (intptr_t)elf);
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for (i = 0; i < symcount; ++i) {
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printf(".Lsym%d:\n", i);
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printf("\n\n");
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printf("\t.org\t%#x\n", (intptr_t)symtab - (intptr_t)elf);
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for (i = 0; i < symcount; ++i) {
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printf(".Lsym%d:\n", i);
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if (strtab && shstrtab) {
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printelfsymbol(&symtab[i], strtab, shstrtab);
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}
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}
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@ -309,8 +324,8 @@ static void printelfrelocations(void) {
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size_t i, j, count;
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const Elf64_Sym *syms;
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const Elf64_Rela *rela;
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const Elf64_Shdr *shdr, *symtab;
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char *strtab, *shstrtab, *symbolname;
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const Elf64_Shdr *shdr, *shdr2, *symtab;
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strtab = GetElfStringTable(elf, st->st_size);
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shstrtab = GetElfSectionNameStringTable(elf, st->st_size);
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for (i = 0; i < elf->e_shnum; ++i) {
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@ -324,20 +339,25 @@ static void printelfrelocations(void) {
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(uintptr_t)elf + shdr->sh_offset + shdr->sh_size));
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++rela, ++j) {
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symtab = GetElfSectionHeaderAddress(elf, st->st_size, shdr->sh_link);
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if (!symtab) continue;
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count = symtab->sh_size / symtab->sh_entsize;
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syms = GetElfSectionAddress(elf, st->st_size, symtab);
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sym = ELF64_R_SYM(rela->r_info);
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if (0 <= sym && sym < count) {
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symbolname =
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getelfsymbolname(elf, st->st_size, strtab, shstrtab, syms + sym);
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if (syms && strtab && shstrtab) {
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symbolname = getelfsymbolname(elf, st->st_size, strtab, shstrtab,
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syms + sym);
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} else {
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symbolname = xasprintf("evil-sym-%d", sym);
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}
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} else {
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symbolname = xasprintf("bad-sym-%d", sym);
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}
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printf("/\t%s+%#lx → %s%c%#lx\n",
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GetElfString(
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elf, st->st_size, shstrtab,
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GetElfSectionHeaderAddress(elf, st->st_size, shdr->sh_info)
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->sh_name),
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(shdr2 =
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GetElfSectionHeaderAddress(elf, st->st_size, shdr->sh_info))
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? GetElfString(elf, st->st_size, shstrtab, shdr2->sh_name)
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: 0,
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rela->r_offset, symbolname, rela->r_addend >= 0 ? '+' : '-',
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ABS(rela->r_addend));
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printf("%s_%zu_%zu:\n", ".Lrela", i, j);
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