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- Add GetCpuCount() API to redbean
- Add unix.gmtime() API to redbean
- Add unix.readlink() API to redbean
- Add unix.localtime() API to redbean
- Perfect the new redbean UNIX module APIs
- Integrate with Linux clock_gettime() vDSO
- Run Lua garbage collector when malloc() fails
- Fix another regression quirk with linenoise repl
- Fix GetProgramExecutableName() for systemwide installs
- Fix a build flake with test/libc/mem/test.mk SRCS list
This commit is contained in:
Justine Tunney 2022-04-25 21:16:05 -07:00
parent 860ea18a87
commit d57b81aac7
51 changed files with 3096 additions and 1395 deletions
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32
tool/decode/dumpvdso.c Normal file
View file

@ -0,0 +1,32 @@
/*-*- 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 2022 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 "libc/calls/calls.h"
#include "libc/elf/struct/ehdr.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/auxv.h"
noasan int main(int argc, char *argv[]) {
int i = 0;
Elf64_Ehdr *ehdr = (Elf64_Ehdr *)getauxval(AT_SYSINFO_EHDR);
if (isatty(1)) exit(1);
for (;;) {
write(1, ((char *)ehdr) + i++, 1);
}
return 0;
}

19
tool/decode/elf.c
View file

@ -27,8 +27,10 @@
#include "libc/log/check.h"
#include "libc/log/log.h"
#include "libc/macros.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/auxv.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/prot.h"
@ -231,6 +233,21 @@ static void printelfsymboltable(void) {
}
}
static void printelfdynsymboltable(void) {
size_t i, symcount = 0;
Elf64_Sym *symtab = GetElfDynSymbolTable(elf, st->st_size, &symcount);
char *strtab = GetElfDynStringTable(elf, st->st_size);
char *shstrtab = GetElfSectionNameStringTable(elf, st->st_size);
if (symtab && strtab) {
printf("\n\n");
printf("\t.org\t%#x\n", (intptr_t)symtab - (intptr_t)elf);
for (i = 0; i < symcount; ++i) {
printf(".Lsym%d:\n", i);
printelfsymbol(&symtab[i], strtab, shstrtab);
}
}
}
static char *getelfsymbolname(const Elf64_Ehdr *elf, size_t mapsize,
const char *strtab, const char *shstrtab,
const Elf64_Sym *sym) {
@ -324,12 +341,14 @@ int main(int argc, char *argv[]) {
fprintf(stderr, "error: not an elf executable: %'s\n", path);
exit(1);
}
elf = (Elf64_Ehdr *)getauxval(AT_SYSINFO_EHDR);
startfile();
printelfehdr();
printelfsegmentheaders();
printelfsectionheaders();
printelfrelocations();
printelfsymboltable();
printelfdynsymboltable();
munmap(elf, st->st_size);
close(fd);
return 0;