Bananymous
/
banan-os
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

LibC: Fix backtrace compilation 

Also dump backtrace on SIGABRT
This commit is contained in:
Bananymous 2025-12-16 05:19:45 +02:00
parent b2723a0c5f
commit fc16b5331c
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
userspace/libraries/LibC/unistd.cpp
View File

@ -32,6 +32,11 @@ struct init_funcs_t
extern "C" char** environ;
#define DUMP_BACKTRACE 1
#define DEMANGLE_BACKTRACE 0
#if DEMANGLE_BACKTRACE
#include <cxxabi.h>
#endif
static void __dump_backtrace(int, siginfo_t*, void*);
@ -136,8 +141,20 @@ static void __dump_symbol(int fd, const void* address)
return;
}
#if DEMANGLE_BACKTRACE
int status;
char* demangled = abi::__cxa_demangle(dli.dli_sname, nullptr, nullptr, &status);
const char* symbol_name = status ? dli.dli_sname : demangled;
#else
const char* symbol_name = dli.dli_sname;
#endif
const uintptr_t uptr_saddr = reinterpret_cast<uintptr_t>(dli.dli_saddr);
dprintf(fd, " 0x%08" PRIxPTR " (%s) %s+0x%" PRIxPTR "\n", uptr_addr - uptr_fbase, dli.dli_fname, symbol_name, uptr_addr - uptr_saddr);
#if DEMANGLE_BACKTRACE
free(demangled);
#endif
}
static void __dump_backtrace(int sig, siginfo_t* info, void* context)
@ -146,6 +163,7 @@ static void __dump_backtrace(int sig, siginfo_t* info, void* context)
[](int signal) -> const char*
{
switch (signal) {
case SIGABRT: return "SIGABRT";
case SIGBUS: return "SIGBUS";
case SIGFPE: return "SIGFPE";
case SIGILL: return "SIGILL";