41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
#if defined(__linux__)
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#define UNW_LOCAL_ONLY
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include <features.h>
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#endif
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#include <dlfcn.h>
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#include <libunwind.h>
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extern "C" {
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void *llgo_address() { return __builtin_return_address(0); }
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int llgo_addrinfo(void *addr, Dl_info *info) { return dladdr(addr, info); }
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void llgo_stacktrace(int skip, void *ctx, int (*fn)(void *ctx, void *pc, void *offset, void *sp, char *name)) {
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unw_cursor_t cursor;
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unw_context_t context;
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unw_word_t offset, pc, sp;
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char fname[256];
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unw_getcontext(&context);
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unw_init_local(&cursor, &context);
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int depth = 0;
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while (unw_step(&cursor) > 0) {
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if (depth < skip) {
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depth++;
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continue;
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}
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if (unw_get_reg(&cursor, UNW_REG_IP, &pc) == 0) {
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unw_get_proc_name(&cursor, fname, sizeof(fname), &offset);
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unw_get_reg(&cursor, UNW_REG_SP, &sp);
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if (fn(ctx, (void *)pc, (void *)offset, (void *)sp, fname) == 0) {
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return;
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}
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}
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}
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}
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}
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