int getCurrentStackTrace(size_t skip, StackTrace* trace) {
trace->frameIPs = NULL;
trace->frameCount = 0;
struct Context ctx;
ctx.trace = trace;
ctx.skip = skip;
ctx.capacity = 0;
unw_context_t uctx;
int r = unw_getcontext(&uctx);
int err = checkError("unw_get_context", r);
if (err) return err;
unw_cursor_t cursor;
r = unw_init_local(&cursor, &uctx);
err = checkError("unw_init_local", r);
if (err) return err;
while ((r = unw_step(&cursor)) > 0) {
if ((err = addIP(&ctx, &cursor)) != 0) {
destroyStackTrace(trace);
return err;
}
}
err = checkError("unw_step", r);
if (err) return err;
return 0;
}
int dwarf_backtrace(CallStack **returnStack) {
*returnStack = calloc(1, sizeof(CallStack));
CallStack *callStack = *returnStack;
callStack->stack = calloc(INITIAL_LIVE_FUNCTION_SIZE, sizeof(LiveFunction));
callStack->count = 0;
callStack->capacity = INITIAL_LIVE_FUNCTION_SIZE;
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
if (callStack->count >= callStack->capacity) {
callStack->capacity *= 2;
callStack->stack = realloc(callStack->stack,
callStack->capacity * sizeof(LiveFunction *));
}
callStack->stack[callStack->count].cursor = cursor;
callStack->stack[callStack->count].pc = (void *)ip;
callStack->stack[callStack->count].sp = (void *)sp;
printf("%p => %p\n", (void *)ip, (void *)sp);
callStack->count++;
}
return callStack->count;
}
static void findRealErrorOnStack (ShockerScriptableControlObject* obj) {
unw_context_t uc;
unw_cursor_t cursor, prev;
unw_word_t bp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
char framename [1024];
int count = 0;
while (unw_step(&cursor) > 0 && count < 18) {
count++;
unw_get_proc_name (&cursor, framename, sizeof(framename), 0);
if (!*framename)
continue;
if (strstr (framename, "js_ReportErrorAgain")) {
#if (__i386__)
unw_get_reg(&prev, UNW_X86_EBP, &bp);
#elif (__amd64__)
unw_get_reg(&prev, UNW_X86_64_RBP, &bp);
#endif
bp += 12;
char ** n = (char**)bp;
obj->GetLogProvider ()->LogError (*n);
break;
}
prev = cursor;
}
}
static void _adjust_stack_pre_safepoint(hlt_execution_context* ctx)
{
// Climb up the stack and adjust the reference counts for live objects
// referenced there so that it reflects reality.
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
int level = 0;
while ( unw_step(&cursor) > 0 ) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
printf("level = %d ip = %lx, sp = %lx\n", level, (long)ip, (long)sp);
level++;
}
#ifdef DEBUG
// DBG_LOG("hilti-mem", "%10s stack-adjust-ctor %p %d %s::%s = %s", obj, level, func, id, render);
#endif
}
/*
* ut_dump_backtrace -- dump stacktrace to error log using libunwind
*/
void
ut_dump_backtrace(void)
{
unw_context_t context;
unw_proc_info_t pip;
pip.unwind_info = NULL;
int ret = unw_getcontext(&context);
if (ret) {
ERR("unw_getcontext: %s [%d]", unw_strerror(ret), ret);
return;
}
unw_cursor_t cursor;
ret = unw_init_local(&cursor, &context);
if (ret) {
ERR("unw_init_local: %s [%d]", unw_strerror(ret), ret);
return;
}
ret = unw_step(&cursor);
char procname[PROCNAMELEN];
unsigned i = 0;
while (ret > 0) {
ret = unw_get_proc_info(&cursor, &pip);
if (ret) {
ERR("unw_get_proc_info: %s [%d]", unw_strerror(ret),
ret);
break;
}
unw_word_t off;
ret = unw_get_proc_name(&cursor, procname, PROCNAMELEN, &off);
if (ret && ret != -UNW_ENOMEM) {
if (ret != -UNW_EUNSPEC) {
ERR("unw_get_proc_name: %s [%d]",
unw_strerror(ret), ret);
}
strcpy(procname, "?");
}
void *ptr = (void *)(pip.start_ip + off);
Dl_info dlinfo;
const char *fname = "?";
if (dladdr(ptr, &dlinfo) && dlinfo.dli_fname &&
*dlinfo.dli_fname)
fname = dlinfo.dli_fname;
ERR("%u: %s (%s%s+0x%lx) [%p]", i++, fname, procname,
ret == -UNW_ENOMEM ? "..." : "", off, ptr);
ret = unw_step(&cursor);
if (ret < 0)
ERR("unw_step: %s [%d]", unw_strerror(ret), ret);
}
}
ssize_t getStackTraceSafe(uintptr_t* addresses, size_t maxAddresses) {
if (maxAddresses == 0) {
return 0;
}
unw_context_t context;
if (unw_getcontext(&context) < 0) {
return -1;
}
unw_cursor_t cursor;
if (unw_init_local(&cursor, &context) < 0) {
return -1;
}
if (!getFrameInfo(&cursor, *addresses)) {
return -1;
}
++addresses;
size_t count = 1;
for (; count != maxAddresses; ++count, ++addresses) {
int r = unw_step(&cursor);
if (r < 0) {
return -1;
}
if (r == 0) {
break;
}
if (!getFrameInfo(&cursor, *addresses)) {
return -1;
}
}
return count;
}
int xbt_libunwind_backtrace(void** bt, int size){
int i = 0;
for(i=0; i < size; i++)
bt[i] = nullptr;
i=0;
unw_cursor_t c;
unw_context_t uc;
unw_getcontext (&uc);
unw_init_local (&c, &uc);
unw_word_t ip;
unw_step(&c);
while(unw_step(&c) >= 0 && i < size){
unw_get_reg(&c, UNW_REG_IP, &ip);
bt[i] = (void*)(long)ip;
i++;
}
return i;
}
UINT64 Extrae_get_caller (int offset)
{
int current_deep = 0;
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip;
if (unw_getcontext(&uc) < 0)
return 0;
if (unw_init_local(&cursor, &uc))
return 0;
offset --; /* Don't compute call to unw_getcontext */
while (current_deep <= offset)
{
if (unw_get_reg(&cursor, UNW_REG_IP, &ip) < 0)
break;
#if defined(DEBUG)
fprintf (stderr, "DEBUG: offset %d depth %d address %08llx %c\n", offset, current_deep, ip, (offset == current_deep)?'*':' ');
#endif
if (unw_step (&cursor) <= 0)
return 0;
current_deep ++;
}
return (UINT64) ip;
}
void backtrace() {
unw_cursor_t cursor;
unw_context_t context;
// Initialize cursor to current frame for local unwinding.
unw_getcontext(&context);
unw_init_local(&cursor, &context);
// Unwind frames one by one, going up the frame stack.
while (unw_step(&cursor) > 0) {
unw_word_t offset, pc;
unw_get_reg(&cursor, UNW_REG_IP, &pc);
if (pc == 0) {
break;
}
printf("0x%lx:", pc);
char sym[256];
if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
char* nameptr = sym;
int status;
char* demangled = abi::__cxa_demangle(sym, nullptr, nullptr, &status);
if (status == 0) {
nameptr = demangled;
}
char file[256];
int line = 0;
getFileAndLine((long)pc, file, 256, &line);
printf(" (%s+0x%lx) in %s:%d\n", nameptr, offset, file, line);
free(demangled);
} else {
printf(" -- error: unable to obtain symbol name for this frame\n");
}
}
}
static void
print_trace (void)
{
#ifdef HAVE_LIBUNWIND
unw_context_t uc;
unw_cursor_t cursor;
guint stack_num = 0;
if (!display_filter (DISPLAY_FLAG_BACKTRACE))
return;
unw_getcontext (&uc);
unw_init_local (&cursor, &uc);
while (unw_step (&cursor) > 0)
{
gchar name[129];
unw_word_t off;
int result;
result = unw_get_proc_name (&cursor, name, sizeof (name) - 1, &off);
if (result < 0 && result != UNW_ENOMEM)
{
g_print ("Error getting proc name\n");
break;
}
g_print ("#%d %s + [0x%08x]\n", stack_num++, name, (unsigned int)off);
}
}
// Initialize unw_cursor_t and unw_context_t from REGDISPLAY
bool InitializeUnwindContextAndCursor(REGDISPLAY* regDisplay, unw_cursor_t* cursor, unw_context_t* unwContext)
{
#ifndef CAN_LINK_SHARED_LIBUNWIND
return false;
#else // CAN_LINK_SHARED_LIBUNWIND
int st;
#if !UNWIND_CONTEXT_IS_UCONTEXT_T
st = unw_getcontext(unwContext);
if (st < 0)
{
return false;
}
#endif
RegDisplayToUnwindContext(regDisplay, unwContext);
st = unw_init_local(cursor, unwContext);
if (st < 0)
{
return false;
}
#if !UNWIND_CONTEXT_IS_UCONTEXT_T
// Set the unwind context to the specified windows context
RegDisplayToUnwindCursor(regDisplay, cursor);
#endif
return true;
#endif // CAN_LINK_SHARED_LIBUNWIND
}
void VSDebugLib::printStack() {
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp, off;
unw_proc_info_t pi;
char file[256], name[256];
int line;
int status;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
unw_get_proc_name (&cursor, name, sizeof (name), &off);
getFileAndLine((long)ip, file, 256, &line);
if (line >= 0) {
char *realname;
realname = abi::__cxa_demangle(name, 0, 0, &status);
if (realname) {
printf("%s: %s, %d\n", realname, file, line);
free(realname);
} else {
printf("%s: %s, %d\n", name, file, line);
}
}
}
}
static void GetContextAndExit(void* data) {
GetContextArg* arg = (GetContextArg*)data;
unw_getcontext(arg->unw_context);
// Don't touch the stack anymore.
while (*arg->exit_flag == 0) {
}
}
vector<long> StackUnwind::fullUnwind() {
#ifdef MAKE_DYNA
return dynaUnwind();
#endif
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
vector<long> call_stack;
/* Need to step twice to remove mention of WMTrace from the call stack */
if (unw_step(&cursor) <= 0)
return call_stack;
if (unw_step(&cursor) <= 0)
return call_stack;
int counter = 0;
while (unw_step(&cursor) > 0 && counter < unw_max_depth) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
call_stack.push_back((long) ip);
counter++;
}
return call_stack;
}
static void handler(int sig) {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
SkDebugf("\nSignal %d:\n", sig);
while (unw_step(&cursor) > 0) {
static const size_t kMax = 256;
char mangled[kMax], demangled[kMax];
unw_word_t offset;
unw_get_proc_name(&cursor, mangled, kMax, &offset);
int ok;
size_t len = kMax;
abi::__cxa_demangle(mangled, demangled, &len, &ok);
SkDebugf("%s (+0x%zx)\n", ok == 0 ? demangled : mangled, (size_t)offset);
}
SkDebugf("\n");
// Exit NOW. Don't notify other threads, don't call anything registered with atexit().
_Exit(sig);
}
void fakegc()
{
std::cout << "GC\n";
unw_cursor_t cursor;
unw_word_t ip, sp;
unw_context_t uc;
root_info_t root_info_ptr;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
do
{
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
// printf("ip=%p sp=%p\n", ip, sp);
if (stk_map.find_root_info((void*)ip, root_info_ptr))
{
for(auto it : root_info_ptr)
{
int *cptr = *((int**)sp - it);
printf("x=%p\n", cptr);
printf("i=%d\n", *cptr);
*cptr = *cptr + 1;
}
}
} while (unw_step(&cursor) > 0);
}
static void
throw_exception (MonoObject *exc, guint64 rethrow)
{
unw_context_t unw_ctx;
MonoContext ctx;
MonoJitInfo *ji;
unw_word_t ip, sp;
int res;
if (mono_object_isinst (exc, mono_defaults.exception_class)) {
MonoException *mono_ex = (MonoException*)exc;
if (!rethrow) {
mono_ex->stack_trace = NULL;
mono_ex->trace_ips = NULL;
}
}
res = unw_getcontext (&unw_ctx);
g_assert (res == 0);
res = unw_init_local (&ctx.cursor, &unw_ctx);
g_assert (res == 0);
/*
* Unwind until the first managed frame. This is needed since
* mono_handle_exception expects the variables in the original context to
* correspond to the method returned by mono_find_jit_info.
*/
while (TRUE) {
res = unw_get_reg (&ctx.cursor, UNW_IA64_IP, &ip);
g_assert (res == 0);
res = unw_get_reg (&ctx.cursor, UNW_IA64_SP, &sp);
g_assert (res == 0);
ji = mini_jit_info_table_find (mono_domain_get (), (gpointer)ip, NULL);
//printf ("UN: %s %lx %lx\n", ji ? jinfo_get_method (ji)->name : "", ip, sp);
if (ji)
break;
res = unw_step (&ctx.cursor);
if (res == 0) {
/*
* This means an unhandled exception during the compilation of a
* topmost method like Main
*/
break;
}
g_assert (res >= 0);
}
ctx.precise_ip = FALSE;
mono_handle_exception (&ctx, exc);
restore_context (&ctx);
g_assert_not_reached ();
}
void collectStackRoots(TraceStack *stack) {
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp, bp;
// force callee-save registers onto the stack:
// Actually, I feel like this is pretty brittle:
// collectStackRoots itself is allowed to save the callee-save registers
// on its own stack.
jmp_buf registers __attribute__((aligned(sizeof(void*))));
#ifdef VALGRIND
memset(®isters, 0, sizeof(registers));
memset(&cursor, 0, sizeof(cursor));
memset(&uc, 0, sizeof(uc));
memset(&ip, 0, sizeof(ip));
memset(&sp, 0, sizeof(sp));
memset(&bp, 0, sizeof(bp));
#endif
setjmp(registers);
assert(sizeof(registers) % 8 == 0);
//void* stack_bottom = __builtin_frame_address(0);
collectRoots(®isters, ®isters + 1, stack);
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
TraceStackGCVisitor visitor(stack);
int code;
while (true) {
int code = unw_step(&cursor);
assert(code > 0 && "something broke unwinding!");
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
unw_get_reg(&cursor, UNW_TDEP_BP, &bp);
void* cur_sp = (void*)sp;
void* cur_bp = (void*)bp;
//std::string name = g.func_addr_registry.getFuncNameAtAddress((void*)ip, true);
//if (VERBOSITY()) printf("ip = %lx (%s), stack = [%p, %p)\n", (long) ip, name.c_str(), cur_sp, cur_bp);
unw_proc_info_t pip;
unw_get_proc_info(&cursor, &pip);
if (pip.start_ip == (uintptr_t)&__libc_start_main) {
break;
}
if (pip.start_ip == (intptr_t)interpretFunction) {
// TODO Do we still need to crawl the interpreter itself?
gatherInterpreterRootsForFrame(&visitor, cur_bp);
}
collectRoots(cur_sp, (char*)cur_bp, stack);
}
}
bool UnwindCurrent::Unwind(size_t num_ignore_frames) {
int ret = unw_getcontext(&context_);
if (ret < 0) {
ALOGW("UnwindCurrent::Unwind: unw_getcontext failed %d\n", ret);
return false;
}
return UnwindFromContext(num_ignore_frames, true);
}
int
backtrace(void **trace, int size)
{
unw_cursor_t cursor; unw_context_t uc;
unw_word_t ip;
int n = 0;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
trace[n++] = (void *)ip;
{
char buf[256];
unw_get_proc_name(&cursor, buf, 256, &ip);
if (strncmp("_sigtramp", buf, sizeof("_sigtramp")) == 0) {
goto darwin_sigtramp;
}
}
}
return n;
darwin_sigtramp:
/* darwin's bundled libunwind doesn't support signal trampoline */
{
ucontext_t *uctx;
/* get _sigtramp's ucontext_t and set values to cursor
* http://www.opensource.apple.com/source/Libc/Libc-825.25/i386/sys/_sigtramp.s
* http://www.opensource.apple.com/source/libunwind/libunwind-35.1/src/unw_getcontext.s
*/
unw_get_reg(&cursor, UNW_X86_64_RBX, &ip);
uctx = (ucontext_t *)ip;
unw_set_reg(&cursor, UNW_X86_64_RAX, uctx->uc_mcontext->__ss.__rax);
unw_set_reg(&cursor, UNW_X86_64_RBX, uctx->uc_mcontext->__ss.__rbx);
unw_set_reg(&cursor, UNW_X86_64_RCX, uctx->uc_mcontext->__ss.__rcx);
unw_set_reg(&cursor, UNW_X86_64_RDX, uctx->uc_mcontext->__ss.__rdx);
unw_set_reg(&cursor, UNW_X86_64_RDI, uctx->uc_mcontext->__ss.__rdi);
unw_set_reg(&cursor, UNW_X86_64_RSI, uctx->uc_mcontext->__ss.__rsi);
unw_set_reg(&cursor, UNW_X86_64_RBP, uctx->uc_mcontext->__ss.__rbp);
unw_set_reg(&cursor, UNW_X86_64_RSP, 8+(uctx->uc_mcontext->__ss.__rsp));
unw_set_reg(&cursor, UNW_X86_64_R8, uctx->uc_mcontext->__ss.__r8);
unw_set_reg(&cursor, UNW_X86_64_R9, uctx->uc_mcontext->__ss.__r9);
unw_set_reg(&cursor, UNW_X86_64_R10, uctx->uc_mcontext->__ss.__r10);
unw_set_reg(&cursor, UNW_X86_64_R11, uctx->uc_mcontext->__ss.__r11);
unw_set_reg(&cursor, UNW_X86_64_R12, uctx->uc_mcontext->__ss.__r12);
unw_set_reg(&cursor, UNW_X86_64_R13, uctx->uc_mcontext->__ss.__r13);
unw_set_reg(&cursor, UNW_X86_64_R14, uctx->uc_mcontext->__ss.__r14);
unw_set_reg(&cursor, UNW_X86_64_R15, uctx->uc_mcontext->__ss.__r15);
ip = *(unw_word_t*)uctx->uc_mcontext->__ss.__rsp;
unw_set_reg(&cursor, UNW_REG_IP, ip);
trace[n++] = (void *)uctx->uc_mcontext->__ss.__rip;
trace[n++] = (void *)ip;
}
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
trace[n++] = (void *)ip;
}
return n;
}
static void luw_backtrace()
{
unw_cursor_t cursor;
unw_context_t context;
unw_getcontext(&context);
unw_init_local(&cursor, &context);
std::stringstream output;
output << "Traceback (most recent call first):" << std::endl;
while (unw_step(&cursor) > 0)
{
unw_word_t pc;
unw_get_reg(&cursor, UNW_REG_IP, &pc);
if (pc == 0)
break;
const char *file = NULL;
const char *func = NULL;
unsigned line = 0;
resolve(pc, &file, &line, &func);
if (file != NULL)
{
if (strcmp("__cxa_throw", func) == 0) continue;
if (strncmp(func, "_Z", 2) == 0)
{
// This is a C++ mangled name (as per the IA-64 spec)
output << " 0x" << std::hex << pc << std::dec << " " << demangle(func) << " (" << file << ":" << line << ")" << std::endl;
} else {
output << " 0x" << std::hex << pc << std::dec << " " << func << " (" << file << ":" << line << ")" << std::endl;
}
// Try to load the file and print the offending line
std::ifstream f;
f.open(file);
if (!f.is_open())
{
output << " <unable to find file>" << std::endl;
} else
{
seek_to_line(f, line);
std::string line;
std::getline(f, line);
output << " " << line << std::endl;
}
} else {
output << " <unknown> (<unknown file>:<unknown line>)" << std::endl;
}
}
output << std::endl;
__latest_backtrace = output.str();
}
void
jffi_longjmp (jmp_buf env, int val)
{
extern int _jffi_longjmp_cont;
unw_context_t uc;
unw_cursor_t c;
unw_word_t sp, ip, bp = 0;
uintptr_t *wp = (uintptr_t *) env;
int i, setjmp_frame;
if (unw_getcontext (&uc) < 0 || unw_init_local (&c, &uc) < 0) {
debug("failed to get context");
abort ();
}
#ifdef __x86_86__
# define UNW_REG_BP UNW_X86_64_RBP
#else
# define UNW_REG_BP UNW_X86_EBP
#endif
setjmp_frame = 0;
do {
char name[256];
unw_proc_info_t pi;
unw_word_t off;
if (unw_get_reg (&c, UNW_REG_BP, &bp) < 0) {
abort();
}
if (unw_get_reg (&c, UNW_REG_SP, &sp) < 0) {
abort();
}
if (unw_get_reg (&c, UNW_REG_IP, &ip) < 0) {
abort();
}
unw_get_proc_name(&c, name, sizeof(name), &off);
unw_get_proc_info(&c, &pi);
// debug("frame %s ip=%llx sp=%llx bp=%llx wp[RP]=%p wp[SP]=%p, pi.start_ip=%llx, pi.end_ip=%llx",
// name, (long long) ip, (long long) sp, (long long) bp, (void *) wp[JB_RP], (void *) wp[JB_SP],
// pi.start_ip, pi.end_ip);
if (wp[JB_SP] > sp || wp[JB_RP] < pi.start_ip || wp[JB_RP] > pi.end_ip) continue;
/* found the right frame: */
// debug("found frame to jump back to");
assert (UNW_NUM_EH_REGS >= 2);
if (unw_set_reg (&c, UNW_REG_EH + 0, wp[JB_RP]) < 0
|| unw_set_reg (&c, UNW_REG_EH + 1, val) < 0
|| unw_set_reg (&c, UNW_REG_IP, (unw_word_t) (uintptr_t) &_jffi_longjmp_cont))
abort ();
unw_resume (&c);
// should not reach here
abort ();
} while (unw_step (&c) > 0);
// debug("failed to find correct frame to jmp to");
}
int main()
{
// verify unw_getcontext() returns no UNW_ESUCCESS
unw_context_t uc;
if ( unw_getcontext(&uc) == UNW_ESUCCESS )
return 0;
else
return 1;
}
void log_stack_trace(const char *msg)
{
#ifdef USE_UNWIND
unw_context_t ctx;
unw_cursor_t cur;
unw_word_t ip, off;
unsigned level;
char sym[512], *dsym;
int status;
const char *log = stack_trace_log.empty() ? NULL : stack_trace_log.c_str();
#endif
if (msg)
ST_LOG(msg);
ST_LOG("Unwound call stack:");
#ifdef USE_UNWIND
if (unw_getcontext(&ctx) < 0) {
ST_LOG("Failed to create unwind context");
return;
}
if (unw_init_local(&cur, &ctx) < 0) {
ST_LOG("Failed to find the first unwind frame");
return;
}
for (level = 1; level < 999; ++level) { // 999 for safety
int ret = unw_step(&cur);
if (ret < 0) {
ST_LOG("Failed to find the next frame");
return;
}
if (ret == 0)
break;
if (unw_get_reg(&cur, UNW_REG_IP, &ip) < 0) {
ST_LOG(" " << std::setw(4) << level);
continue;
}
if (unw_get_proc_name(&cur, sym, sizeof(sym), &off) < 0) {
ST_LOG(" " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip);
continue;
}
dsym = abi::__cxa_demangle(sym, NULL, NULL, &status);
ST_LOG(" " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip << " " << (!status && dsym ? dsym : sym) << " + " << "0x" << off);
free(dsym);
}
#else
std::stringstream ss;
ss << el::base::debug::StackTrace();
std::vector<std::string> lines;
std::string s = ss.str();
boost::split(lines, s, boost::is_any_of("\n"));
for (const auto &line: lines)
ST_LOG(line);
#endif
}
void
AS_UTL_catchCrash(int sig_num, siginfo_t *info, void *ctx) {
WRITE_STRING("\nFailed with '");
WRITE_STRING(strsignal(sig_num));
WRITE_STRING("'\n");
WRITE_STRING("\nBacktrace (mangled):\n\n");
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp;
int depth = 0;
unw_getcontext(&uc); // Get state
unw_init_local(&cursor, &uc); // Initialize state cursor
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
unw_word_t off;
char name[256];
if (unw_get_proc_name (&cursor, name, sizeof (name), &off) == 0) {
if (off)
fprintf(stderr, "%02d <%s + 0x%lx> ip=%lx sp=%lx\n", depth, name, (long)off, ip, sp);
else
fprintf(stderr, "%02d <%s> ip=%lx sp=%lx\n", depth, name, ip, sp);
} else {
fprintf(stderr, "%02d <?> ip=%lx sp=%lx\n", depth, ip, sp);
}
depth++;
}
//WRITE_STRING("\nBacktrace (demangled):\n\n");
//WRITE_STRING("\nGDB:\n\n");
//AS_UTL_envokeGDB();
// Pass the signal through, only so a core file can get generated.
struct sigaction sa;
sa.sa_handler = SIG_DFL;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sigaction(sig_num, &sa, NULL);
raise(sig_num);
}
//
// Not used by C++.
// Unwinds stack, calling "stop" function at each frame
// Could be used to implement longjmp().
//
EXPORT _Unwind_Reason_Code _Unwind_ForcedUnwind(struct _Unwind_Exception* exception_object, _Unwind_Stop_Fn stop, void* stop_parameter)
{
DEBUG_PRINT_API("_Unwind_ForcedUnwind(ex_obj=%p, stop=%p)\n", exception_object, stop);
unw_context_t uc;
unw_getcontext(&uc);
// mark that this is a forced unwind, so _Unwind_Resume() can do the right thing
exception_object->private_1 = (uintptr_t)stop;
exception_object->private_2 = (uintptr_t)stop_parameter;
// doit
return unwind_phase2_forced(&uc, exception_object, stop, stop_parameter);
}
int main(int argc, char** argv)
{
SIMIX_global_init(&argc, argv);
simgrid::mc::Variable* var;
simgrid::mc::Type* type;
simgrid::mc::Process process(getpid(), -1);
process.init();
test_global_variable(process, process.binary_info.get(),
"some_local_variable", &some_local_variable, sizeof(int));
var = test_global_variable(process, process.binary_info.get(),
"test_some_array", &test_some_array, sizeof(test_some_array));
auto i = process.binary_info->types.find(var->type_id);
xbt_assert(i != process.binary_info->types.end(), "Missing type");
type = &i->second;
xbt_assert(type->element_count == 6*5*4,
"element_count mismatch in test_some_array : %i / %i",
type->element_count, 6*5*4);
var = test_global_variable(process, process.binary_info.get(),
"test_some_struct", &test_some_struct, sizeof(test_some_struct));
i = process.binary_info->types.find(var->type_id);
xbt_assert(i != process.binary_info->types.end(), "Missing type");
type = &i->second;
assert(type);
assert(find_member(*type, "first")->offset() == 0);
assert(find_member(*type, "second")->offset()
== ((const char*)&test_some_struct.second) - (const char*)&test_some_struct);
unw_context_t context;
unw_cursor_t cursor;
unw_getcontext(&context);
unw_init_local(&cursor, &context);
test_local_variable(process.binary_info.get(), "main", "argc", &argc, &cursor);
{
int lexical_block_variable = 50;
test_local_variable(process.binary_info.get(), "main",
"lexical_block_variable", &lexical_block_variable, &cursor);
}
s_foo my_foo;
test_type_by_name(process, my_foo);
_exit(0);
}
void Extrae_trace_callers (iotimer_t time, int offset, int type)
{
int current_deep = 1;
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip;
/* Leave if they aren't initialized (asked by user!) */
if (Trace_Caller[type] == NULL)
return;
if (unw_getcontext(&uc) < 0)
return;
if (unw_init_local(&cursor, &uc) < 0)
return;
offset --; /* Don't compute call to unw_getcontext */
while ((unw_step(&cursor) > 0) && (current_deep < Caller_Deepness[type]+offset))
{
if (unw_get_reg(&cursor, UNW_REG_IP, &ip) < 0)
break;
#if defined(MPICALLER_DEBUG)
if (current_deep >= offset)
fprintf (stderr, "emitted (deep = %d, offset = %d) ip = %lx\n", current_deep, offset, (long) ip);
else
fprintf (stderr, "ignored (deep = %d, offset = %d) ip = %lx\n", current_deep, offset, (long) ip);
#endif
if (current_deep >= offset)
{
if (type == CALLER_MPI || type == CALLER_DYNAMIC_MEMORY)
{
if (Trace_Caller[type][current_deep-offset])
{
TRACE_EVENT(time, CALLER_EVENT_TYPE(type, current_deep-offset+1), (UINT64)ip);
}
}
#if defined(SAMPLING_SUPPORT)
else if (type == CALLER_SAMPLING)
{
if (Trace_Caller[type][current_deep-offset])
SAMPLE_EVENT_NOHWC(time, SAMPLING_EV+current_deep-offset+1, (UINT64) ip);
}
#endif
}
current_deep ++;
}
}
//
// When _Unwind_RaiseException() is in phase2, it hands control
// to the personality function at each frame. The personality
// may force a jump to a landing pad in that function, the landing
// pad code may then call _Unwind_Resume() to continue with the
// unwinding. Note: the call to _Unwind_Resume() is from compiler
// geneated user code. All other _Unwind_* routines are called
// by the C++ runtime __cxa_* routines.
//
// Re-throwing an exception is implemented by having the code call
// __cxa_rethrow() which in turn calls _Unwind_Resume_or_Rethrow()
//
EXPORT void _Unwind_Resume(struct _Unwind_Exception* exception_object)
{
DEBUG_PRINT_API("_Unwind_Resume(ex_obj=%p)\n", exception_object);
unw_context_t uc;
unw_getcontext(&uc);
if ( exception_object->private_1 != 0 )
unwind_phase2_forced(&uc, exception_object, (_Unwind_Stop_Fn)exception_object->private_1, (void*)exception_object->private_2);
else
unwind_phase2(&uc, exception_object);
// clients assume _Unwind_Resume() does not return, so all we can do is abort.
ABORT("_Unwind_Resume() can't return");
}
/// Scans unwind information to find the function that contains the
/// specified code address "pc".
_LIBUNWIND_EXPORT void *_Unwind_FindEnclosingFunction(void *pc) {
_LIBUNWIND_TRACE_API("_Unwind_FindEnclosingFunction(pc=%p)\n", pc);
// This is slow, but works.
// We create an unwind cursor then alter the IP to be pc
unw_cursor_t cursor;
unw_context_t uc;
unw_proc_info_t info;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(long) pc);
if (unw_get_proc_info(&cursor, &info) == UNW_ESUCCESS)
return (void *)(long) info.start_ip;
else
return NULL;
}