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Add <link.h> for absl

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Justine Tunney 2023-12-08 12:52:24 -08:00
parent a11016e590
commit 8874a37abc
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GPG key ID: BE714B4575D6E328
5 changed files with 99 additions and 0 deletions
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2
ape/ape.S
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@ -752,6 +752,8 @@ ape_loader_end:
#if SupportsSystemv() || SupportsMetal()
.section .elf.phdrs,"a",@progbits
.globl ape_phdrs
ape_phdrs:
.long PT_LOAD
.long PF_R|PF_X
.stub ape_cod_offset,quad

1
ape/sections.internal.h
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@ -22,6 +22,7 @@ extern uint8_t __data_start[] __attribute__((__weak__));
extern uint8_t __data_end[] __attribute__((__weak__));
extern uint8_t __bss_start[] __attribute__((__weak__));
extern uint8_t __bss_end[] __attribute__((__weak__));
extern unsigned char ape_phdrs[] __attribute__((__weak__));
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_APE_SECTIONS_INTERNAL_H_ */

33
libc/calls/dl_iterate_phdr.c Normal file
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@ -0,0 +1,33 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2023 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/sections.internal.h"
#include "libc/elf/link.h"
#include "libc/runtime/runtime.h"
int dl_iterate_phdr(int callback(struct dl_phdr_info *info, size_t size,
void *data),
void *data) {
struct dl_phdr_info info = {
.dlpi_addr = (uintptr_t)__executable_start,
.dlpi_name = GetProgramExecutableName(),
.dlpi_phdr = (const Elf64_Phdr *)ape_phdrs,
.dlpi_phnum = 3,
};
return callback(&info, sizeof(info), data);
}

40
libc/elf/link.h Normal file
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@ -0,0 +1,40 @@
#ifndef COSMOPOLITAN_ELF_LINK_H_
#define COSMOPOLITAN_ELF_LINK_H_
#include "libc/elf/scalar.h"
#include "libc/elf/struct/dyn.h"
#include "libc/elf/struct/phdr.h"
COSMOPOLITAN_C_START_
#define ElfW(type) Elf64_##type
struct dl_phdr_info {
Elf64_Addr dlpi_addr;
const char *dlpi_name;
const Elf64_Phdr *dlpi_phdr;
Elf64_Half dlpi_phnum;
unsigned long long int dlpi_adds;
unsigned long long int dlpi_subs;
size_t dlpi_tls_modid;
void *dlpi_tls_data;
};
struct link_map {
Elf64_Addr l_addr;
char *l_name;
Elf64_Dyn *l_ld;
struct link_map *l_next;
struct link_map *l_prev;
};
struct r_debug {
int r_version;
struct link_map *r_map;
Elf64_Addr r_brk;
enum { RT_CONSISTENT, RT_ADD, RT_DELETE } r_state;
Elf64_Addr r_ldbase;
};
int dl_iterate_phdr(int (*)(struct dl_phdr_info *, size_t, void *), void *);
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_ELF_LINK_H_ */

23
libc/isystem/link.h Normal file
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@ -0,0 +1,23 @@
#ifndef _LINK_H
#define _LINK_H
#include "libc/elf/def.h"
#include "libc/elf/link.h"
#include "libc/elf/scalar.h"
#include "libc/elf/struct/auxv.h"
#include "libc/elf/struct/chdr.h"
#include "libc/elf/struct/dyn.h"
#include "libc/elf/struct/ehdr.h"
#include "libc/elf/struct/lib.h"
#include "libc/elf/struct/move.h"
#include "libc/elf/struct/nhdr.h"
#include "libc/elf/struct/phdr.h"
#include "libc/elf/struct/rel.h"
#include "libc/elf/struct/rela.h"
#include "libc/elf/struct/shdr.h"
#include "libc/elf/struct/sym.h"
#include "libc/elf/struct/syminfo.h"
#include "libc/elf/struct/verdaux.h"
#include "libc/elf/struct/verdef.h"
#include "libc/elf/struct/vernaux.h"
#include "libc/elf/struct/verneed.h"
#endif /* _LINK_H */