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Make minor improvements

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- Work towards simplifying ape.S startup process
- Rewrote ar because it took minutes to build cosmopolitan.a
This commit is contained in:
Justine Tunney 2020-11-09 15:41:11 -08:00
parent 95bc650be8
commit aea89fe832
70 changed files with 1037 additions and 456 deletions
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13
libc/elf/elf.h
View file

@ -20,10 +20,9 @@ COSMOPOLITAN_C_START_
struct MappedFile;
Elf64_Ehdr *mapelfread(const char *, struct MappedFile *);
char *getelfstringtable(const Elf64_Ehdr *, size_t);
Elf64_Sym *getelfsymboltable(const Elf64_Ehdr *, size_t, Elf64_Xword *);
Elf64_Shdr *getelfsectionbyaddress(const Elf64_Ehdr *, size_t, void *);
bool iself64binary(const Elf64_Ehdr *, size_t);
char *GetElfStringTable(const Elf64_Ehdr *, size_t);
Elf64_Sym *GetElfSymbolTable(const Elf64_Ehdr *, size_t, Elf64_Xword *);
bool IsElf64Binary(const Elf64_Ehdr *, size_t);
forceinline void checkelfaddress(const Elf64_Ehdr *elf, size_t mapsize,
intptr_t addr, size_t addrsize) {
@ -94,7 +93,7 @@ static inline void getelfvirtualaddressrange(const Elf64_Ehdr *elf,
if (out_end) *out_end = end;
}
static inline char *getelfstring(const Elf64_Ehdr *elf, size_t mapsize,
static inline char *GetElfString(const Elf64_Ehdr *elf, size_t mapsize,
const char *strtab, Elf64_Word rva) {
intptr_t addr = (intptr_t)strtab + rva;
#if !(TRUSTWORTHY + ELF_TRUSTWORTHY + 0)
@ -105,10 +104,10 @@ static inline char *getelfstring(const Elf64_Ehdr *elf, size_t mapsize,
return (char *)addr;
}
static inline const char *getelfsectionname(const Elf64_Ehdr *elf,
static inline const char *GetElfSectionName(const Elf64_Ehdr *elf,
size_t mapsize, Elf64_Shdr *shdr) {
if (!elf || !shdr) return NULL;
return getelfstring(elf, mapsize, getelfsectionnamestringtable(elf, mapsize),
return GetElfString(elf, mapsize, getelfsectionnamestringtable(elf, mapsize),
shdr->sh_name);
}

37
libc/elf/getelfsectionbyaddress.c
View file

@ -1,37 +0,0 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
Elf64_Shdr *getelfsectionbyaddress(const Elf64_Ehdr *elf, size_t mapsize,
void *addr) {
Elf64_Half i;
Elf64_Shdr *shdr;
if (elf) {
for (i = elf->e_shnum; i > 0; --i) {
shdr = getelfsectionheaderaddress(elf, mapsize, i - 1);
if ((intptr_t)addr >= shdr->sh_addr &&
(intptr_t)addr < shdr->sh_addr + shdr->sh_size) {
return shdr;
}
}
}
return NULL;
}

2
libc/elf/getelfstringtable.c
View file

@ -20,7 +20,7 @@
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
char *getelfstringtable(const Elf64_Ehdr *elf, size_t mapsize) {
char *GetElfStringTable(const Elf64_Ehdr *elf, size_t mapsize) {
Elf64_Half i;
Elf64_Shdr *shdr;
for (i = elf->e_shnum; i > 0; --i) {

2
libc/elf/getelfsymboltable.c
View file

@ -20,7 +20,7 @@
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
Elf64_Sym *getelfsymboltable(const Elf64_Ehdr *elf, size_t mapsize,
Elf64_Sym *GetElfSymbolTable(const Elf64_Ehdr *elf, size_t mapsize,
Elf64_Xword *out_count) {
Elf64_Half i;
Elf64_Shdr *shdr;

2
libc/elf/iself64binary.c
View file

@ -19,7 +19,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/elf/elf.h"
bool iself64binary(const Elf64_Ehdr *elf, size_t mapsize) {
bool IsElf64Binary(const Elf64_Ehdr *elf, size_t mapsize) {
if (mapsize < sizeof(Elf64_Ehdr)) return false;
if (memcmp(elf->e_ident, ELFMAG, 4)) return false;
return (elf->e_ident[EI_CLASS] == ELFCLASSNONE ||

1
libc/elf/struct/sym.h
View file

@ -10,6 +10,7 @@ typedef struct Elf64_Sym {
uint8_t st_info;
/* STV_{DEFAULT,INTERNAL,HIDDEN,PROTECTED} */
uint8_t st_other;
/* SHN_UNDEF, <section index>, SHN_ABS, SHN_COMMON, etc. */
Elf64_Section st_shndx;
Elf64_Addr st_value;
Elf64_Xword st_size;