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Implement crash reporting for AARCH64

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The ShowCrashReports() feature for aarch64 should work even better than
the x86 crash reports. Thanks to the benefit of hindsight these reports
should be rock solid reliable and beautiful to read.

This change also improves the syscall polyfills for aarch64. Some of the
sys_foo() functions have been removed, usually because they're legacy or
downright footguns not worth building.
This commit is contained in:
Justine Tunney 2023-05-12 05:47:54 -07:00
parent 285e8a2348
commit 1f2a5a8fc1
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GPG key ID: BE714B4575D6E328
42 changed files with 540 additions and 247 deletions
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7
libc/runtime/memtrack.internal.h
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@ -126,8 +126,11 @@ forceinline pureconst bool IsOldStackFrame(int x) {
/* openbsd uses 4mb stack by default */
/* freebsd uses 512mb stack by default */
/* most systems use 8mb stack by default */
intptr_t old = ROUNDDOWN(__oldstack, GetStackSize());
return (old >> 16) <= x && x <= ((old + (GetStackSize() - FRAMESIZE)) >> 16);
size_t foss_stack_size = 4ul * 1024 * 1024;
uintptr_t top = ROUNDUP(__oldstack, FRAMESIZE);
uintptr_t bot = top - foss_stack_size;
uintptr_t old = ROUNDDOWN(__oldstack, foss_stack_size);
return (int)(bot >> 16) <= x && x <= (int)((top >> 16) - 1);
}
forceinline pureconst bool IsFixedFrame(int x) {