mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-05-16 18:40:16 +00:00
Perform some code cleanup
This commit is contained in:
Justine Tunney
parent
992a4638ae
commit
72f8bd10b7
8 changed files with 55 additions and 265 deletions
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@ -1,26 +0,0 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/errno.h"
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extern _Thread_local int hog;
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int dog(void) {
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return hog;
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}
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@ -17,28 +17,11 @@
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/sysv/consts/nr.h"
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static inline unsigned sys_umask(unsigned newmask) {
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#ifdef __x86_64__
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unsigned res;
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asm volatile("syscall"
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: "=a"(res)
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: "0"(__NR_umask), "D"(newmask)
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: "memory", "cc");
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#elif defined(__aarch64__)
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// xnu m1 doesn't manage carry flag
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register long r0 asm("x0") = newmask;
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register long r8 asm("x8") = __NR_umask & 0x7ff;
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register long r16 asm("x16") = __NR_umask & 0x7ff;
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register unsigned res asm("x0");
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asm volatile("svc\t0" : "=r"(res) : "r"(r0), "r"(r8), "r"(r16) : "memory");
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#endif
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return res;
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}
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/**
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* Sets file mode creation mask.
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*
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@ -17,6 +17,7 @@
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/state.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/atomic.h"
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@ -249,17 +250,13 @@ static void __asan_memset(void *p, char c, size_t n) {
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__builtin_memcpy(b + n - 8, &x, 8);
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break;
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default:
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if (n <= 64) {
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i = 0;
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do {
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__builtin_memcpy(b + i, &x, 8);
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asm volatile("" ::: "memory");
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__builtin_memcpy(b + i + 8, &x, 8);
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} while ((i += 16) + 16 <= n);
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for (; i < n; ++i) b[i] = x;
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} else {
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__repstosb(p, c, n);
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}
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i = 0;
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do {
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__builtin_memcpy(b + i, &x, 8);
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asm volatile("" ::: "memory");
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__builtin_memcpy(b + i + 8, &x, 8);
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} while ((i += 16) + 16 <= n);
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for (; i < n; ++i) b[i] = x;
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break;
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}
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}
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@ -317,18 +314,14 @@ static void *__asan_mempcpy(void *dst, const void *src, size_t n) {
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__builtin_memcpy(d + n - 8, &b, 8);
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return d + n;
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default:
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if (n <= 64) {
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i = 0;
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do {
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__builtin_memcpy(&a, s + i, 8);
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asm volatile("" ::: "memory");
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__builtin_memcpy(d + i, &a, 8);
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} while ((i += 8) + 8 <= n);
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for (; i < n; ++i) d[i] = s[i];
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return d + i;
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} else {
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return __repmovsb(d, s, n);
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}
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i = 0;
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do {
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__builtin_memcpy(&a, s + i, 8);
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asm volatile("" ::: "memory");
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__builtin_memcpy(d + i, &a, 8);
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} while ((i += 8) + 8 <= n);
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for (; i < n; ++i) d[i] = s[i];
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return d + i;
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}
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}
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@ -1426,8 +1419,14 @@ void __asan_map_shadow(uintptr_t p, size_t n) {
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__asan_unpoison((char *)p, n);
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}
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static size_t __asan_strlen(const char *s) {
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size_t i = 0;
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while (s[i]) ++i;
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return i;
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}
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static textstartup void __asan_shadow_string(char *s) {
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__asan_map_shadow((intptr_t)s, __strlen(s) + 1);
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__asan_map_shadow((intptr_t)s, __asan_strlen(s) + 1);
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}
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static textstartup void __asan_shadow_auxv(intptr_t *auxv) {
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@ -1469,6 +1468,10 @@ static textstartup void __asan_shadow_existing_mappings(void) {
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__asan_poison((void *)GetStackAddr(), GUARDSIZE, kAsanStackOverflow);
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}
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forceinline ssize_t __write_str(const char *s) {
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return sys_write(2, s, __asan_strlen(s));
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}
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void __asan_init(int argc, char **argv, char **envp, intptr_t *auxv) {
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static bool once;
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if (!_cmpxchg(&once, false, true)) return;
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@ -1491,7 +1494,7 @@ void __asan_init(int argc, char **argv, char **envp, intptr_t *auxv) {
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__asan_map_shadow(0, 4096);
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__asan_poison(0, GUARDSIZE, kAsanNullPage);
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if (!IsWindows()) {
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__sysv_mprotect((void *)0x7fff8000, 0x10000, PROT_READ);
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sys_mprotect((void *)0x7fff8000, 0x10000, PROT_READ);
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}
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__asan_shadow_string_list(argv);
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__asan_shadow_string_list(envp);
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@ -16,6 +16,7 @@
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/promises.internal.h"
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@ -23,6 +24,7 @@
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#include "libc/log/log.h"
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#include "libc/nt/struct/teb.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/at.h"
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#include "libc/sysv/consts/o.h"
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#define kBufSize 1024
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@ -48,15 +50,15 @@ int IsDebuggerPresent(bool force) {
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if (!PLEDGED(RPATH)) return false;
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res = 0;
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e = errno;
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if ((fd = __sysv_open("/proc/self/status", O_RDONLY, 0)) >= 0) {
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if ((got = __sysv_read(fd, buf, sizeof(buf) - 1)) > 0) {
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if ((fd = __sys_openat(AT_FDCWD, "/proc/self/status", O_RDONLY, 0)) >= 0) {
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if ((got = sys_read(fd, buf, sizeof(buf) - 1)) > 0) {
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buf[got] = '\0';
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if ((p = __strstr(buf, kPid))) {
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p += sizeof(kPid) - 1;
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res = __atoul(p);
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}
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}
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__sysv_close(fd);
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sys_close(fd);
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}
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errno = e;
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return res;
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@ -16,9 +16,10 @@
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/runtime/memtrack.internal.h"
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#include "libc/sysv/consts/at.h"
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#include "libc/sysv/consts/o.h"
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privileged void PrintSystemMappings(int outfd) {
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@ -26,12 +27,12 @@ privileged void PrintSystemMappings(int outfd) {
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ssize_t rc;
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char buf[64];
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if (!IsWindows()) {
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if ((infd = __sysv_open("/proc/self/maps", O_RDONLY, 0)) >= 0) {
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__sysv_write(outfd, "\n", 1);
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while ((rc = __sysv_read(infd, buf, sizeof(buf))) > 0) {
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__sysv_write(outfd, buf, rc);
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if ((infd = __sys_openat(AT_FDCWD, "/proc/self/maps", O_RDONLY, 0)) >= 0) {
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sys_write(outfd, "\n", 1);
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while ((rc = sys_read(infd, buf, sizeof(buf))) > 0) {
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sys_write(outfd, buf, rc);
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}
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}
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__sysv_close(infd);
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sys_close(infd);
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}
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}
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@ -20,7 +20,6 @@
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/errno.h"
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#include "libc/log/internal.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/termios.h"
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@ -39,6 +38,12 @@
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static bool __isrestorable;
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static union metatermios __oldtermios;
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static size_t __strlen(const char *s) {
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size_t i = 0;
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while (s[i]) ++i;
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return i;
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}
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// called weakly by libc/calls/ioctl_tcsets.c to avoid pledge("tty")
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void __on_ioctl_tcsets(int fd) {
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int e;
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@ -166,10 +166,16 @@ static char *__ubsan_itpcpy(char *p, struct UbsanTypeDescriptor *t,
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}
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}
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static size_t __ubsan_strlen(const char *s) {
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size_t i = 0;
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while (s[i]) ++i;
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return i;
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}
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static const char *__ubsan_dubnul(const char *s, unsigned i) {
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size_t n;
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while (i--) {
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if ((n = __strlen(s))) {
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if ((n = __ubsan_strlen(s))) {
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s += n + 1;
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} else {
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return NULL;
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@ -1,6 +1,7 @@
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#ifndef COSMOPOLITAN_LIBC_LOG_LIBFATAL_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_LOG_LIBFATAL_INTERNAL_H_
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#include "libc/calls/calls.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/runtime.h"
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@ -10,191 +11,6 @@ COSMOPOLITAN_C_START_
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#define __ToUpper(c) ((c) >= 'a' && (c) <= 'z' ? (c) - 'a' + 'A' : (c))
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forceinline long __sysv_exit(long rc) {
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long ax;
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#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
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asm volatile("call\t__syscall__"
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: "=a"(ax)
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: "0"(__NR_exit_group), "D"(rc)
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: "memory", "cc");
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#elif defined(__aarch64__)
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register long r0 asm("x0") = rc;
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register long r8 asm("x8") = __NR_exit_group & 0x7ff;
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register long r16 asm("x16") = __NR_exit_group & 0x7ff;
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register long res_x0 asm("x0");
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asm volatile("svc\t0" : "=r"(res_x0) : "r"(r0), "r"(r8), "r"(r16) : "memory");
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ax = res_x0;
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#else
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ax = syscall(__NR_exit_group & 0x7ff, rc);
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#endif
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return ax;
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}
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forceinline int __sysv_close(long fd) {
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long ax;
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#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
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asm volatile("call\t__syscall__"
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: "=a"(ax)
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: "0"(__NR_close), "D"(fd)
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: "rdx", "memory", "cc");
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#elif defined(__aarch64__)
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register long r0 asm("x0") = fd;
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register long r8 asm("x8") = __NR_close & 0x7ff;
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register long r16 asm("x16") = __NR_close & 0x7ff;
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register long res_x0 asm("x0");
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asm volatile("mov\tx8,%1\n\t"
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"svc\t0"
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: "=r"(res_x0)
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: "r"(r0), "r"(r8), "r"(r16)
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: "memory");
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ax = res_x0;
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#else
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ax = syscall(__NR_close & 0x7ff, fd);
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#endif
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return ax;
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}
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|
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forceinline int __sysv_open(const char *path, long flags, long mode) {
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long ax, dx;
|
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#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
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asm volatile("call\t__syscall__"
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: "=a"(ax), "=d"(dx)
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: "0"(__NR_open), "D"(path), "S"(flags), "1"(mode)
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: "memory", "cc");
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#elif defined(__aarch64__)
|
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register long r0 asm("x0") = -100;
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register long r1 asm("x1") = (long)path;
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register long r2 asm("x2") = (long)flags;
|
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register long r3 asm("x3") = (long)mode;
|
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register long r8 asm("x8") = (long)__NR_open & 0x7ff;
|
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register long r16 asm("x16") = (long)__NR_open & 0x7ff;
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register long res_x0 asm("x0");
|
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asm volatile("svc\t0"
|
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: "=r"(res_x0)
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: "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r8), "r"(r16)
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: "memory");
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ax = res_x0;
|
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#else
|
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ax = syscall(__NR_open & 0x7ff, path, flags, mode);
|
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#endif
|
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return ax;
|
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}
|
||||
|
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forceinline long __sysv_read(long fd, void *data, unsigned long size) {
|
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long ax, dx;
|
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#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
||||
asm volatile("call\t__syscall__"
|
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: "=a"(ax), "=d"(dx)
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: "0"(__NR_read), "D"(fd), "S"(data), "1"(size)
|
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: "memory", "cc");
|
||||
#elif defined(__aarch64__)
|
||||
register long r0 asm("x0") = (long)fd;
|
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register long r1 asm("x1") = (long)data;
|
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register long r2 asm("x2") = (long)size;
|
||||
register long r8 asm("x8") = (long)__NR_read & 0x7ff;
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register long r16 asm("x16") = (long)__NR_read & 0x7ff;
|
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register long res_x0 asm("x0");
|
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asm volatile("svc\t0"
|
||||
: "=r"(res_x0)
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: "r"(r0), "r"(r1), "r"(r2), "r"(r8), "r"(r16)
|
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: "memory");
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||||
ax = res_x0;
|
||||
#else
|
||||
ax = syscall(__NR_read & 0x7ff, fd, data, size);
|
||||
#endif
|
||||
return ax;
|
||||
}
|
||||
|
||||
forceinline long __sysv_write(long fd, const void *data, unsigned long size) {
|
||||
long ax, dx;
|
||||
#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
||||
asm volatile("call\t__syscall__"
|
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: "=a"(ax), "=d"(dx)
|
||||
: "0"(__NR_write), "D"(fd), "S"(data), "1"(size)
|
||||
: "memory", "cc");
|
||||
#elif defined(__aarch64__)
|
||||
register long r0 asm("x0") = (long)fd;
|
||||
register long r1 asm("x1") = (long)data;
|
||||
register long r2 asm("x2") = (long)size;
|
||||
register long r8 asm("x8") = (long)__NR_write & 0x7ff;
|
||||
register long r16 asm("x16") = (long)__NR_write & 0x7ff;
|
||||
register long res_x0 asm("x0");
|
||||
asm volatile("svc\t0"
|
||||
: "=r"(res_x0)
|
||||
: "i"(64), "r"(r0), "r"(r1), "r"(r2), "r"(r8), "r"(r16)
|
||||
: "memory");
|
||||
ax = res_x0;
|
||||
#else
|
||||
ax = syscall(__NR_write & 0x7ff, fd, data, size);
|
||||
#endif
|
||||
return ax;
|
||||
}
|
||||
|
||||
forceinline long __sysv_mprotect(void *addr, size_t size, long prot) {
|
||||
long ax, dx;
|
||||
#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
||||
asm volatile("call\t__syscall__"
|
||||
: "=a"(ax), "=d"(dx)
|
||||
: "0"(__NR_mprotect), "D"(addr), "S"(size), "1"(prot)
|
||||
: "memory", "cc");
|
||||
#elif defined(__aarch64__)
|
||||
register long r0 asm("x0") = (long)addr;
|
||||
register long r1 asm("x1") = (long)size;
|
||||
register long r2 asm("x2") = (long)prot;
|
||||
register long r8 asm("x8") = (long)__NR_mprotect & 0x7ff;
|
||||
register long r16 asm("x16") = (long)__NR_mprotect & 0x7ff;
|
||||
register long res_x0 asm("x0");
|
||||
asm volatile("svc\t0"
|
||||
: "=r"(res_x0)
|
||||
: "r"(r0), "r"(r1), "r"(r2), "r"(r8), "r"(r16)
|
||||
: "memory");
|
||||
ax = res_x0;
|
||||
#else
|
||||
ax = syscall(__NR_mprotect & 0x7ff, addr, size, prot);
|
||||
#endif
|
||||
return ax;
|
||||
}
|
||||
|
||||
forceinline int __sysv_getpid(void) {
|
||||
long ax;
|
||||
#if defined(__MNO_RED_ZONE__) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
|
||||
asm volatile("call\t__syscall__"
|
||||
: "=a"(ax)
|
||||
: "0"(__NR_getpid)
|
||||
: "rdx", "memory", "cc");
|
||||
#elif defined(__aarch64__)
|
||||
register long r8 asm("x8") = (long)__NR_getpid & 0x7ff;
|
||||
register long r16 asm("x16") = (long)__NR_getpid & 0x7ff;
|
||||
register long res_x0 asm("x0");
|
||||
asm volatile("svc\t0" : "=r"(res_x0) : "r"(r8), "r"(r16) : "memory");
|
||||
ax = res_x0;
|
||||
#else
|
||||
ax = syscall(__NR_getpid & 0x7ff);
|
||||
#endif
|
||||
return ax;
|
||||
}
|
||||
|
||||
forceinline ssize_t __write(const void *p, size_t n) {
|
||||
uint32_t wrote;
|
||||
if (!IsWindows()) {
|
||||
return __sysv_write(2, p, n);
|
||||
} else if (WriteFile(GetStdHandle(kNtStdErrorHandle), p, n, &wrote, 0)) {
|
||||
return wrote;
|
||||
} else {
|
||||
return -GetLastError();
|
||||
}
|
||||
}
|
||||
|
||||
forceinline size_t __strlen(const char *s) {
|
||||
size_t i = 0;
|
||||
while (s[i]) ++i;
|
||||
return i;
|
||||
}
|
||||
|
||||
forceinline ssize_t __write_str(const char *s) {
|
||||
return __write(s, __strlen(s));
|
||||
}
|
||||
|
||||
forceinline int __strcmp(const char *l, const char *r) {
|
||||
size_t i = 0;
|
||||
while (l[i] == r[i] && r[i]) ++i;
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue