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Improved backtrace on platforms without glibc. Added $$frameaddress and $$returnaddress properly.

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This commit is contained in:
Christoffer Lerno
2023-11-18 14:18:09 +01:00
committed by Christoffer Lerno
parent 00019f9d76
commit 87fdb5956e
11 changed files with 347 additions and 16 deletions
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15
lib/std/os/posix/process.c3
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@@ -37,7 +37,6 @@ def spawn = posix_spawn;
extern fn CInt kill(Pid_t pid, CInt sig);
extern fn Pid_t waitpid(Pid_t pid, CInt* stat_loc, int options);
extern fn CInt raise(CInt sig);
extern fn CInt backtrace(void **buffer, CInt size);
extern fn ZString* backtrace_symbols(void** buffer, CInt size);
extern fn void backtrace_symbols_fd(void** buffer, CInt size, CInt fd);
macro CInt wEXITSTATUS(CInt status) => (status & 0xff00) >> 8;
@@ -55,3 +54,17 @@ const CInt __W_CONTINUED = 0xffff;
const CInt WNOHANG = 1;
const CInt WUNTRACES = 2;
extern fn CInt backtrace(void** buffer, CInt size) @if(env::DARWIN);
fn CInt backtrace(void** buffer, CInt size) @if(!env::DARWIN)
{
if (size < 1) return 0;
void*[128] buffer_first;
CInt i;
for (i = 0; (uptr)builtin::get_frameaddress(i + 1) > 1 && i < size; i++)
{
buffer[i] = builtin::get_returnaddress(i);
if (!buffer[i]) break;
}
return i;
}