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Remove some dead code

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Justine Tunney 2023-07-03 02:47:05 -07:00
parent 168d1c157e
commit 73c0faa1b5
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GPG key ID: BE714B4575D6E328
66 changed files with 324 additions and 7705 deletions
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85
tool/viz/vdsodump.c
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@ -1,85 +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 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/struct/sigaction.h"
#include "libc/calls/struct/siginfo.h"
#include "libc/calls/ucontext.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/auxv.h"
#include "libc/sysv/consts/sa.h"
#include "libc/sysv/consts/sig.h"
#include "third_party/xed/x86.h"
#ifdef __x86_64__
#define OUTPATH "vdso.elf"
volatile bool finished;
void OnSegmentationFault(int sig, siginfo_t *si, void *vctx) {
struct XedDecodedInst xedd;
ucontext_t *ctx = vctx;
xed_decoded_inst_zero_set_mode(&xedd, XED_MACHINE_MODE_LONG_64);
xed_instruction_length_decode(&xedd, (void *)ctx->uc_mcontext.rip, 15);
ctx->uc_mcontext.rip += xedd.length;
finished = true;
}
int main(int argc, char *argv[]) {
FILE *f;
int byte;
volatile unsigned char *vdso, *p;
vdso = (unsigned char *)getauxval(AT_SYSINFO_EHDR);
if (vdso) {
fprintf(stderr, "vdso found at address %p\n", vdso);
} else {
fprintf(stderr, "error: AT_SYSINFO_EHDR was not in auxiliary values\n");
return 1;
}
f = fopen(OUTPATH, "wb");
if (!f) {
fprintf(stderr, "error: fopen(%`'s) failed\n", OUTPATH);
return 1;
}
struct sigaction sa = {
.sa_sigaction = OnSegmentationFault,
.sa_flags = SA_SIGINFO,
};
sigaction(SIGSEGV, &sa, 0);
sigaction(SIGBUS, &sa, 0);
p = vdso;
for (;;) {
byte = *p++;
if (!finished) {
fputc(byte, f);
} else {
break;
}
}
fclose(f);
fprintf(stderr, "%zu bytes dumped to %s\n", p - vdso, OUTPATH);
return 0;
}
#endif /* __x86_64__ */