mirror of
https://github.com/jart/cosmopolitan.git
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f2af97711b
- Improve compatibility with Blink virtual machine - Add non-POSIX APIs for joining threads and signal masks - Never ever use anything except 32-bit integers for atomics - Add some `#undef` statements to workaround `ctags` problems
91 lines
3.8 KiB
C
91 lines
3.8 KiB
C
/*-*- 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 2021 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/dce.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/intrin/weaken.h"
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#include "libc/macros.internal.h"
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#include "libc/runtime/brk.internal.h"
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#include "libc/runtime/memtrack.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/winargs.internal.h"
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#ifdef DescribeFrame
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#undef DescribeFrame
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#endif
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#define ADDR(x) ((int64_t)((uint64_t)(x) << 32) >> 16)
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#define UNSHADOW(x) ((int64_t)(MAX(0, (x)-0x7fff8000)) << 3)
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#define FRAME(x) ((int)((x) >> 16))
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forceinline pureconst bool IsBrkFrame(int x) {
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unsigned char *p = (unsigned char *)((intptr_t)((uintptr_t)x << 32) >> 16);
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return _weaken(__brk) && p >= _end && p < _weaken(__brk)->p;
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}
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static const char *GetFrameName(int x) {
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if (!x) {
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return "null";
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} else if (IsShadowFrame(x)) {
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return "shadow";
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} else if (IsAutoFrame(x)) {
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return "automap";
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} else if (IsFixedFrame(x)) {
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return "fixed";
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} else if (IsArenaFrame(x)) {
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return "arena";
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} else if (IsStaticStackFrame(x)) {
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return "stack";
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} else if (IsBrkFrame(x)) {
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return "brk";
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} else if (IsGfdsFrame(x)) {
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return "g_fds";
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} else if (IsZiposFrame(x)) {
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return "zipos";
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} else if (IsKmallocFrame(x)) {
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return "kmalloc";
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} else if (IsMemtrackFrame(x)) {
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return "memtrack";
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} else if (IsOldStackFrame(x)) {
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return "oldstack";
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} else if (IsWindows() &&
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(((GetStaticStackAddr(0) + GetStackSize()) >> 16) <= x &&
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x <= ((GetStaticStackAddr(0) + GetStackSize() +
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sizeof(struct WinArgs) - 1) >>
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16))) {
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return "winargs";
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} else if ((int)((intptr_t)_base >> 16) <= x &&
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x <= (int)(((intptr_t)_end - 1) >> 16)) {
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return "image";
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} else {
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return "unknown";
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}
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}
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const char *DescribeFrame(char buf[32], int x) {
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char *p;
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if (IsShadowFrame(x)) {
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ksnprintf(buf, 32, "%s %s %.8x", GetFrameName(x),
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GetFrameName(FRAME(UNSHADOW(ADDR(x)))), FRAME(UNSHADOW(ADDR(x))));
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return buf;
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} else {
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return GetFrameName(x);
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}
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}
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