-/* $Id: ex.c 5173 2008-01-07 22:10:52Z mquinson $ */
+/* $Id$ */
/* backtrace_windows - backtrace displaying on windows platform */
/* This file is included by ex.c on need (windows x86) */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-/*
- * Win32 (x86) implementation backtrace, backtrace_symbols
- * : support for application self-debugging.
+/*
+ * Win32 (x86) implementation backtrace, backtrace_symbols:
+ * support for application self-debugging.
*/
-#include <dbghelp.h>
+#if defined(_XBT_BORLAND_COMPILER) || defined(_XBT_VISUALC_COMPILER)
+/* native windows build */
+# include <dbghelp.h>
+#else
+/* gcc-based cross-compiling */
+# include "xbt/wine_dbghelp.h"
+#endif
-/* Pointer function to SymInitialize() */
-typedef BOOL (WINAPI *xbt_pfn_sym_initialize_t)(HANDLE, PSTR , BOOL);
-/* Pointer function to SymCleanup() */
-typedef BOOL (WINAPI *xbt_pfn_sym_cleanup_t)(HANDLE hProcess);
+/* SymInitialize() */
+typedef BOOL(WINAPI * fun_initialize_t) (HANDLE, PSTR, BOOL);
+static fun_initialize_t fun_initialize;
-/* Pointer function to SymFunctionTableAccess() */
-typedef PVOID (WINAPI *xbt_pfn_sym_function_table_access_t)(HANDLE, DWORD);
+/* SymCleanup() */
+typedef BOOL(WINAPI * fun_cleanup_t) (HANDLE hProcess);
+static fun_cleanup_t fun_cleanup;
-/* Pointer function to SymGetLineFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_line_from_addr_t)(HANDLE, DWORD, PDWORD , PIMAGEHLP_LINE);
+/* SymFunctionTableAccess() */
+typedef PVOID(WINAPI * fun_function_table_access_t) (HANDLE, DWORD);
+static fun_function_table_access_t fun_function_table_access;
-/* Pointer function to SymGetModuleBase() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_module_base_t)(HANDLE,DWORD);
+/* SymGetLineFromAddr() */
+typedef BOOL(WINAPI * fun_get_line_from_addr_t) (HANDLE, DWORD,
+ PDWORD, PIMAGEHLP_LINE);
+static fun_get_line_from_addr_t fun_get_line_from_addr;
-/* Pointer function to SymGetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_options_t)(VOID);
+/* SymGetModuleBase() */
+typedef DWORD(WINAPI * fun_get_module_base_t) (HANDLE, DWORD);
+static fun_get_module_base_t fun_get_module_base;
-/* Pointer function to SymGetSymFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_sym_from_addr_t)(HANDLE, DWORD, PDWORD , OUT PIMAGEHLP_SYMBOL);
+/* SymGetOptions() */
+typedef DWORD(WINAPI * fun_get_options_t) (VOID);
+static fun_get_options_t fun_get_options;
-/* Pointer function to SymSetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_set_options_t)(DWORD);
+/* SymSetOptions() */
+typedef DWORD(WINAPI * fun_set_options_t) (DWORD);
+static fun_set_options_t fun_set_options;
+
+/* Pointer function to SymGetSymFromAddr() */
+typedef BOOL(WINAPI * fun_get_sym_from_addr_t) (HANDLE, DWORD, PDWORD,
+ OUT PIMAGEHLP_SYMBOL);
+static fun_get_sym_from_addr_t fun_get_sym_from_addr;
/* Pointer function to StackWalk() */
-typedef BOOL (WINAPI *xbt_pfn_stack_walk_t)(DWORD, HANDLE, HANDLE ,LPSTACKFRAME, PVOID,PREAD_PROCESS_MEMORY_ROUTINE, PFUNCTION_TABLE_ACCESS_ROUTINE, PGET_MODULE_BASE_ROUTINE, PTRANSLATE_ADDRESS_ROUTINE);
+typedef BOOL(WINAPI * fun_stack_walk_t) (DWORD, HANDLE, HANDLE,
+ LPSTACKFRAME, PVOID,
+ PREAD_PROCESS_MEMORY_ROUTINE,
+ PFUNCTION_TABLE_ACCESS_ROUTINE,
+ PGET_MODULE_BASE_ROUTINE,
+ PTRANSLATE_ADDRESS_ROUTINE);
+static fun_stack_walk_t fun_stack_walk;
+
+static HINSTANCE hlp_dbg_instance = NULL;
+static HANDLE process_handle = NULL;
+
+
+/* Module creation/destruction: nothing to do on linux */
+void xbt_backtrace_init(void)
+{
+ process_handle = GetCurrentProcess();
+
+ if (hlp_dbg_instance) {
+ /* debug help is already loaded */
+ return;
+ }
+
+ /* load the library */
+ hlp_dbg_instance = LoadLibraryA("Dbghelp.dll");
+
+ if (!hlp_dbg_instance)
+ return;
+
+ /* get the pointers to debug help library exported functions */
+ fun_initialize =
+ (fun_initialize_t) GetProcAddress(hlp_dbg_instance, "SymInitialize");
+ fun_cleanup =
+ (fun_cleanup_t) GetProcAddress(hlp_dbg_instance, "SymCleanup");
+ fun_function_table_access =
+ (fun_function_table_access_t) GetProcAddress(hlp_dbg_instance,
+ "SymFunctionTableAccess");
+ fun_get_line_from_addr =
+ (fun_get_line_from_addr_t) GetProcAddress(hlp_dbg_instance,
+ "SymGetLineFromAddr");
+ fun_get_module_base =
+ (fun_get_module_base_t) GetProcAddress(hlp_dbg_instance,
+ "SymGetModuleBase");
+ fun_get_options =
+ (fun_get_options_t) GetProcAddress(hlp_dbg_instance, "SymGetOptions");
+ fun_get_sym_from_addr =
+ (fun_get_sym_from_addr_t) GetProcAddress(hlp_dbg_instance,
+ "SymGetSymFromAddr");
+ fun_set_options =
+ (fun_set_options_t) GetProcAddress(hlp_dbg_instance, "SymSetOptions");
+ fun_stack_walk =
+ (fun_stack_walk_t) GetProcAddress(hlp_dbg_instance, "StackWalk");
+
+ /* Check that everything worked well */
+ if (!fun_initialize ||
+ !fun_cleanup ||
+ !fun_function_table_access ||
+ !fun_get_line_from_addr ||
+ !fun_get_module_base ||
+ !fun_get_options ||
+ !fun_get_sym_from_addr || !fun_set_options || !fun_stack_walk) {
+ FreeLibrary(hlp_dbg_instance);
+ hlp_dbg_instance = NULL;
+ return;
+ }
+
+ (*fun_set_options) ((*fun_get_options) () |
+ SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS);
+
+ if (!(*fun_initialize) (process_handle, 0, 1)) {
+ FreeLibrary(hlp_dbg_instance);
+ hlp_dbg_instance = NULL;
+ }
+}
-/* This structure represents the debug_help library used interface */
-typedef struct s_xbt_debug_help
+void xbt_backtrace_exit(void)
{
- HINSTANCE instance;
- HANDLE process_handle;
- xbt_pfn_sym_initialize_t sym_initialize;
- xbt_pfn_sym_cleanup_t sym_cleanup;
- xbt_pfn_sym_function_table_access_t sym_function_table_access;
- xbt_pfn_sym_get_line_from_addr_t sym_get_line_from_addr;
- xbt_pfn_sym_get_module_base_t sym_get_module_base;
- xbt_pfn_sym_get_options_t sym_get_options;
- xbt_pfn_sym_get_sym_from_addr_t sym_get_sym_from_addr;
- xbt_pfn_sym_set_options_t sym_set_options;
- xbt_pfn_stack_walk_t stack_walk;
-}s_xbt_debug_hlp_t,* xbt_debug_hlp_t;
-
-
-/* the address to the unique reference to the debug help library interface */
-static xbt_debug_hlp_t
-dbg_hlp = NULL;
-
-/* initialize the debug help library */
-static int
-dbg_hlp_init(HANDLE process_handle);
-
-/* finalize the debug help library */
-static int
-dbg_hlp_finalize(void);
+ if (!hlp_dbg_instance)
+ return;
+
+ if ((*fun_cleanup) (process_handle))
+ FreeLibrary(hlp_dbg_instance);
+
+ hlp_dbg_instance = NULL;
+}
/*
* backtrace() function.
* sure that buffer and size are large enough.
*/
-int
-backtrace (void **buffer, int size);
+int backtrace(void **buffer, int size);
/*
* backtrace_symbols() function.
* trace_symbols() translates the addresses into an array of strings containing
* the name, the source file and the line number or the las called functions.
*/
-char **
-backtrace_symbols (void *const *buffer, int size);
+char **backtrace_symbols(void *const *buffer, int size);
-void xbt_ex_setup_backtrace(xbt_ex_t *e) {
-int i;
-char **backtrace = backtrace_symbols (e->bt, e->used);
-
- /* parse the output and build a new backtrace */
- e->bt_strings = xbt_new(char*,e->used);
-
+void xbt_backtrace_current(xbt_ex_t * e)
+{
+ e->used = backtrace((void **) e->bt, XBT_BACKTRACE_SIZE);
+}
- for(i=0; i<e->used; i++)
- {
- e->bt_strings[i] = xbt_strdup(backtrace[i]);
- free(backtrace[i]);
- }
-
- free(backtrace);
-}
-int
-backtrace (void **buffer, int size)
+void xbt_ex_setup_backtrace(xbt_ex_t * e)
{
- int pos = 0;
- STACKFRAME* stack_frame;
- int first = 1;
-
- IMAGEHLP_SYMBOL * pSym;
- unsigned long offset = 0;
- IMAGEHLP_LINE line_info = {0};
- byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
-
- CONTEXT context = {CONTEXT_FULL};
- GetThreadContext(GetCurrentThread(), &context);
-
- /* ebp points on stack base */
- /* esp points on stack pointer, ie on last stacked element (current element) */
- _asm call $+5
- _asm pop eax
- _asm mov context.Eip, eax
- _asm mov eax, esp
- _asm mov context.Esp, eax
- _asm mov context.Ebp, ebp
-
- dbg_hlp_init(GetCurrentProcess());
-
- if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer))
- {
- errno = EINVAL;
- return 0;
- }
-
- for(pos = 0; pos < size; pos++)
- buffer[pos] = NULL;
-
- pos = 0;
-
- pSym = (IMAGEHLP_SYMBOL*)__buffer;
-
- pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
- pSym->MaxNameLength = MAX_SYM_NAME;
-
-
- line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
-
-
- while(pos < size)
- {
- stack_frame = (void*)xbt_new0(STACKFRAME,1);
-
- if(!stack_frame)
- {
- errno = ENOMEM;
- break;
- }
-
- stack_frame->AddrPC.Offset = context.Eip;
- stack_frame->AddrPC.Mode = AddrModeFlat;
-
- stack_frame->AddrFrame.Offset = context.Ebp;
- stack_frame->AddrFrame.Mode = AddrModeFlat;
-
- stack_frame->AddrStack.Offset = context.Esp;
- stack_frame->AddrStack.Mode = AddrModeFlat;
-
- if((*(dbg_hlp->stack_walk))(
- IMAGE_FILE_MACHINE_I386,
- dbg_hlp->process_handle,
- GetCurrentThread(),
- stack_frame,
- &context,
- NULL,
- dbg_hlp->sym_function_table_access,
- dbg_hlp->sym_get_module_base,
- NULL)
- && !first)
- {
- if(stack_frame->AddrReturn.Offset)
- {
-
- if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &offset,pSym))
- {
- if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &offset,&line_info))
- buffer[pos++] = (void*)stack_frame;
- }
- }
- else
- {
- free(stack_frame); /* no symbol or no line info */
- break;
- }
- }
- else
- {
- free(stack_frame);
-
- if(first)
- first = 0;
- else
- break;
- }
- }
+ int i;
+ char **backtrace_syms;
- return pos;
-}
+ xbt_assert0(e
+ && e->used,
+ "Backtrace not setup yet, cannot set it up for display");
-char **
-backtrace_symbols (void *const *buffer, int size)
-{
- int pos;
- int success = 0;
- char** strings;
- STACKFRAME* stack_frame;
- IMAGEHLP_SYMBOL * pSym;
- unsigned long offset = 0;
- IMAGEHLP_LINE line_info = {0};
- IMAGEHLP_MODULE module = {0};
- byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
-
- if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer))
- {
- errno = EINVAL;
- return NULL;
- }
-
- strings = xbt_new0(char*,size);
-
- if(NULL == strings)
- {
- errno = ENOMEM;
- return NULL;
- }
-
- pSym = (IMAGEHLP_SYMBOL*)__buffer;
-
- pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
- pSym->MaxNameLength = MAX_SYM_NAME;
-
-
- line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
- module.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
-
- for(pos = 0; pos < size; pos++)
- {
- stack_frame = (STACKFRAME*)(buffer[pos]);
-
- if(NULL != stack_frame)
- {
-
- if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &offset,pSym))
- {
- if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &offset,&line_info))
- {
- strings[pos] = bprintf("** In %s() at %s:%d", pSym->Name,line_info.FileName,line_info.LineNumber);
- }
- else
- {
- strings[pos] = bprintf("** In %s()", pSym->Name);
- }
- success = 1;
- }
- else
- {
- strings[pos] = xbt_strdup("** <no symbol>");
- }
-
- free(stack_frame);
- }
- else
- break;
- }
-
- if(!success)
- {
- free(strings);
- strings = NULL;
- }
-
- dbg_hlp_finalize();
-
- return strings;
+ backtrace_syms = backtrace_symbols(e->bt, e->used);
+ e->bt_strings = NULL;
+ /* parse the output and build a new backtrace */
+ e->bt_strings = xbt_new(char *, e->used);
+
+
+ for (i = 0; i < e->used; i++)
+ e->bt_strings[i] = backtrace_syms[i];
+
+ free(backtrace_syms);
}
-static int
-dbg_hlp_init(HANDLE process_handle)
+int backtrace(void **buffer, int size)
{
- if(dbg_hlp)
- {
- /* debug help is already loaded */
- return 0;
- }
-
- /* allocation */
- dbg_hlp = xbt_new0(s_xbt_debug_hlp_t,1);
-
- if(!dbg_hlp)
- return ENOMEM;
-
- /* load the library */
- dbg_hlp->instance = LoadLibraryA("Dbghelp.dll");
-
- if(!(dbg_hlp->instance))
- {
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- /* get the pointers to debug help library exported functions */
-
- if(!((dbg_hlp->sym_initialize) = (xbt_pfn_sym_initialize_t)GetProcAddress(dbg_hlp->instance,"SymInitialize")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_cleanup) = (xbt_pfn_sym_cleanup_t)GetProcAddress(dbg_hlp->instance,"SymCleanup")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_function_table_access) = (xbt_pfn_sym_function_table_access_t)GetProcAddress(dbg_hlp->instance,"SymFunctionTableAccess")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_line_from_addr) = (xbt_pfn_sym_get_line_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetLineFromAddr")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_module_base) = (xbt_pfn_sym_get_module_base_t)GetProcAddress(dbg_hlp->instance,"SymGetModuleBase")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_options) = (xbt_pfn_sym_get_options_t)GetProcAddress(dbg_hlp->instance,"SymGetOptions")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_sym_from_addr) = (xbt_pfn_sym_get_sym_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetSymFromAddr")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_set_options) = (xbt_pfn_sym_set_options_t)GetProcAddress(dbg_hlp->instance,"SymSetOptions")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->stack_walk) = (xbt_pfn_stack_walk_t)GetProcAddress(dbg_hlp->instance,"StackWalk")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- dbg_hlp->process_handle = process_handle;
-
- (*(dbg_hlp->sym_set_options))((*(dbg_hlp->sym_get_options))() | SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS);
-
- if(!(*(dbg_hlp->sym_initialize))(dbg_hlp->process_handle,0,1))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
-
- return 0;
+ int pos = 0;
+ STACKFRAME *stack_frame;
+ int first = 1;
+
+ IMAGEHLP_SYMBOL *pSym;
+ unsigned long offset = 0;
+ IMAGEHLP_LINE line_info = { 0 };
+ byte
+ __buffer[(sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR) +
+ sizeof(ULONG64) - 1) / sizeof(ULONG64)];
+
+ CONTEXT context = { CONTEXT_FULL };
+ GetThreadContext(GetCurrentThread(), &context);
+
+ /* ebp points on stack base */
+ /* esp points on stack pointer, ie on last stacked element (current element) */
+ _asm call $ + 5
+ _asm pop eax
+ _asm mov context.Eip, eax
+ _asm mov eax, esp
+ _asm mov context.Esp, eax
+ _asm mov context.Ebp, ebp
+ if ((NULL == hlp_dbg_instance) || (size <= 0) || (NULL == buffer)) {
+ errno = EINVAL;
+ return 0;
+ }
+
+ for (pos = 0; pos < size; pos++)
+ buffer[pos] = NULL;
+
+ pos = 0;
+
+ pSym = (IMAGEHLP_SYMBOL *) __buffer;
+
+ pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
+ pSym->MaxNameLength = MAX_SYM_NAME;
+
+
+ line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
+
+
+ while (pos < size) {
+ stack_frame = (void *) xbt_new0(STACKFRAME, 1);
+
+ stack_frame->AddrPC.Offset = context.Eip;
+ stack_frame->AddrPC.Mode = AddrModeFlat;
+
+ stack_frame->AddrFrame.Offset = context.Ebp;
+ stack_frame->AddrFrame.Mode = AddrModeFlat;
+
+ stack_frame->AddrStack.Offset = context.Esp;
+ stack_frame->AddrStack.Mode = AddrModeFlat;
+
+ if ((*fun_stack_walk) (IMAGE_FILE_MACHINE_I386,
+ process_handle,
+ GetCurrentThread(),
+ stack_frame,
+ &context,
+ NULL,
+ fun_function_table_access,
+ fun_get_module_base, NULL)
+ && !first) {
+ if (stack_frame->AddrReturn.Offset) {
+
+ if ((*fun_get_sym_from_addr)
+ (process_handle, stack_frame->AddrPC.Offset, &offset, pSym)) {
+ if ((*fun_get_line_from_addr)
+ (process_handle, stack_frame->AddrPC.Offset, &offset,
+ &line_info))
+ buffer[pos++] = (void *) stack_frame;
+ }
+ } else {
+ free(stack_frame); /* no symbol or no line info */
+ break;
+ }
+ } else {
+ free(stack_frame);
+
+ if (first)
+ first = 0;
+ else
+ break;
+ }
+ }
+
+ return pos;
}
-static int
-dbg_hlp_finalize(void)
+char **backtrace_symbols(void *const *buffer, int size)
{
- if(!dbg_hlp)
- return EINVAL;
-
- if(!(*(dbg_hlp->sym_cleanup))(dbg_hlp->process_handle))
- return (int)GetLastError();
-
- if(!FreeLibrary(dbg_hlp->instance))
- return (int)GetLastError();
-
- free(dbg_hlp);
- dbg_hlp = NULL;
-
- return 0;
-}
+ int pos;
+ int success = 0;
+ char **strings;
+ STACKFRAME *stack_frame;
+ IMAGEHLP_SYMBOL *pSym;
+ unsigned long offset = 0;
+ IMAGEHLP_LINE line_info = { 0 };
+ IMAGEHLP_MODULE module = { 0 };
+ byte
+ __buffer[(sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR) +
+ sizeof(ULONG64) - 1) / sizeof(ULONG64)];
+
+ if ((NULL == hlp_dbg_instance) || (size <= 0) || (NULL == buffer)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ strings = xbt_new0(char *, size);
+
+ pSym = (IMAGEHLP_SYMBOL *) __buffer;
+
+ pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
+ pSym->MaxNameLength = MAX_SYM_NAME;
+
+
+ line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
+ module.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
+
+ for (pos = 0; pos < size; pos++) {
+ stack_frame = (STACKFRAME *) (buffer[pos]);
+ if (NULL != stack_frame) {
+
+ if ((*fun_get_sym_from_addr)
+ (process_handle, stack_frame->AddrPC.Offset, &offset, pSym)) {
+ if ((*fun_get_line_from_addr)
+ (process_handle, stack_frame->AddrPC.Offset, &offset, &line_info)) {
+ strings[pos] =
+ bprintf("** In %s() at %s:%d", pSym->Name, line_info.FileName,
+ (int) line_info.LineNumber);
+ } else {
+ strings[pos] = bprintf("** In %s()", pSym->Name);
+ }
+ success = 1;
+ } else {
+ strings[pos] = xbt_strdup("** <no symbol>");
+ }
+
+ free(stack_frame);
+ } else
+ break;
+ }
+
+ if (!success) {
+ free(strings);
+ strings = NULL;
+ }
+
+ return strings;
+}
