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Fix bugs and make improvements

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- Get clone() working on FreeBSD
- Increase some Python build quotas
- Add more atomic builtins to chibicc
- Fix ASAN poisoning of alloca() memory
- Make MODE= mandatory link path tinier
- Improve the examples folder a little bit
- Start working on some more resource limits
- Make the linenoise auto-complete UI as good as GNU readline
- Update compile.com, avoiding AVX codegen on non-AVX systems
- Make sure empty path to syscalls like opendir raises ENOENT
- Correctly polyfill ENOENT vs. ENOTDIR on the New Technology
- Port bestline's paredit features to //third_party/linenoise
- Remove workarounds for RHEL 5.0 bugs that were fixed in 5.1
This commit is contained in:
Justine Tunney 2022-04-20 09:56:53 -07:00
parent c3fb624647
commit ae638c0850
181 changed files with 2994 additions and 1367 deletions
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27
libc/intrin/asan.c
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@ -44,6 +44,7 @@
#include "libc/runtime/internal.h"
#include "libc/runtime/memtrack.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/stack.h"
#include "libc/runtime/symbols.internal.h"
#include "libc/str/str.h"
#include "libc/str/tpenc.h"
@ -58,7 +59,7 @@ STATIC_YOINK("_init_asan");
#define ASAN_MORGUE_ITEMS 512
#define ASAN_MORGUE_THRESHOLD 65536 // morgue memory O(ITEMS*THRESHOLD)
#define ASAN_TRACE_ITEMS 16 // backtrace limit on malloc origin
#define ASAN_TRACE_ITEMS 16 // backtrace limit on malloc origin
/**
* @fileoverview Cosmopolitan Address Sanitizer Runtime.
@ -156,9 +157,10 @@ struct ReportOriginHeap {
bool __asan_noreentry;
static struct AsanMorgue __asan_morgue;
static wontreturn void __asan_unreachable(void) {
for (;;) __builtin_trap();
}
#define __asan_unreachable() \
do { \
for (;;) __builtin_trap(); \
} while (0)
static int __asan_bsf(uint64_t x) {
_Static_assert(sizeof(long long) == sizeof(uint64_t), "");
@ -177,7 +179,8 @@ static uint64_t __asan_roundup2pow(uint64_t x) {
static char *__asan_utf8cpy(char *p, unsigned c) {
uint64_t z;
z = tpenc(c);
do *p++ = z;
do
*p++ = z;
while ((z >>= 8));
return p;
}
@ -921,7 +924,8 @@ static void __asan_trace(struct AsanTrace *bt, const struct StackFrame *bp) {
if (!__asan_checka(SHADOW(bp), sizeof(*bp) >> 3).kind) {
addr = bp->addr;
if (addr == weakaddr("__gc") && weakaddr("__gc")) {
do --gi;
do
--gi;
while ((addr = garbage->p[gi].ret) == weakaddr("__gc"));
}
bt->p[i] = addr;
@ -1172,10 +1176,7 @@ void __asan_stack_free(char *p, size_t size, int classid) {
}
void __asan_handle_no_return(void) {
uintptr_t stk, ssz;
stk = (uintptr_t)__builtin_frame_address(0);
ssz = GetStackSize();
__asan_unpoison(stk, ROUNDUP(stk, ssz) - stk);
__asan_unpoison(GetStackAddr(0), GetStackSize());
}
void __asan_register_globals(struct AsanGlobal g[], int n) {
@ -1239,14 +1240,14 @@ void __asan_unpoison_stack_memory(uintptr_t addr, size_t size) {
__asan_unpoison(addr, size);
}
void __asan_alloca_poison(uintptr_t addr, size_t size) {
void __asan_alloca_poison(uintptr_t addr, uintptr_t size) {
__asan_poison(addr - 32, 32, kAsanAllocaUnderrun);
__asan_poison(addr + size, 32, kAsanAllocaOverrun);
__asan_unpoison(addr, size);
}
void __asan_allocas_unpoison(uintptr_t x, uintptr_t y) {
if (x && x > y) __asan_unpoison(x, y - x);
if (!x || x > y) return;
__asan_memset((void *)((x >> 3) + 0x7fff8000), 0, (y - x) / 8);
}
void *__asan_addr_is_in_fake_stack(void *fakestack, void *addr, void **beg,