/* 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. */
-extern char **environ; /* the environment, as specified by the opengroup */
+extern char **environ; /* the environment, as specified by the opengroup */
-void xbt_ex_setup_backtrace(xbt_ex_t *e) {
+void xbt_ex_setup_backtrace(xbt_ex_t * e)
+{
int i;
+
/* to get the backtrace from the libc */
- char **backtrace_syms = backtrace_symbols (e->bt, e->used);
-
+ char **backtrace_syms = backtrace_symbols(e->bt, e->used);
+
/* To build the commandline of addr2line */
char *cmd, *curr;
-
+
/* to extract the addresses from the backtrace */
- char **addrs=xbt_new(char*,e->used);
- char buff[256],*p;
-
+ char **addrs = xbt_new(char *, e->used);
+ char buff[256], *p;
+
/* To read the output of addr2line */
FILE *pipe;
- char line_func[1024],line_pos[1024];
+ char line_func[1024], line_pos[1024];
/* size (in char) of pointers on this arch */
- int addr_len=0;
+ int addr_len = 0;
/* To search for the right executable path when not trivial */
struct stat stat_buf;
char *binary_name = NULL;
-
- e->used = backtrace((void**)e->bt,XBT_BACKTRACE_SIZE);
+
+ e->used = backtrace((void **) e->bt, XBT_BACKTRACE_SIZE);
e->bt_strings = NULL;
/* Some arches only have stubs of backtrace, no implementation (hppa comes to mind) */
if (!e->used)
- return;
-
+ return;
+
/* build the commandline */
- if (stat(xbt_binary_name,&stat_buf)) {
+ if (stat(xbt_binary_name, &stat_buf)) {
/* Damn. binary not in current dir. We'll have to dig the PATH to find it */
int i;
- for (i=0; environ[i]; i++) {
- if (!strncmp("PATH=",environ[i], 5)) {
- xbt_dynar_t path=xbt_str_split(environ[i] + 5, ":");
- unsigned int cpt;
- char *data;
- xbt_dynar_foreach(path, cpt, data) {
- if (binary_name)
- free(binary_name);
- binary_name = bprintf("%s/%s",data,xbt_binary_name);
- if (!stat(binary_name,&stat_buf)) {
- /* Found. */
- DEBUG1("Looked in the PATH for the binary. Found %s",binary_name);
- xbt_dynar_free(&path);
- break;
- }
- }
- if (stat(binary_name,&stat_buf)) {
- /* not found */
- e->used = 1;
- e->bt_strings = xbt_new(char*,1);
- e->bt_strings[0] = bprintf("(binary '%s' not found the path)",xbt_binary_name);
- return;
- }
- xbt_dynar_free(&path);
- break;
- }
+
+ for (i = 0; environ[i]; i++) {
+ if (!strncmp("PATH=", environ[i], 5)) {
+ xbt_dynar_t path = xbt_str_split(environ[i] + 5, ":");
+ unsigned int cpt;
+ char *data;
+
+ xbt_dynar_foreach(path, cpt, data) {
+ if (binary_name)
+ free(binary_name);
+ binary_name = bprintf("%s/%s", data, xbt_binary_name);
+ if (!stat(binary_name, &stat_buf)) {
+ /* Found. */
+ DEBUG1("Looked in the PATH for the binary. Found %s",
+ binary_name);
+ xbt_dynar_free(&path);
+ break;
+ }
+ }
+ if (stat(binary_name, &stat_buf)) {
+ /* not found */
+ e->used = 1;
+ e->bt_strings = xbt_new(char *, 1);
+
+ e->bt_strings[0] =
+ bprintf("(binary '%s' not found the path)", xbt_binary_name);
+ return;
+ }
+ xbt_dynar_free(&path);
+ break;
+ }
}
} else {
binary_name = xbt_strdup(xbt_binary_name);
- }
- cmd = curr = xbt_new(char,strlen(ADDR2LINE)+25+strlen(binary_name)+32*e->used);
-
- curr += sprintf(curr,"%s -f -e %s ",ADDR2LINE,binary_name);
+ }
+ cmd = curr =
+ xbt_new(char,
+ strlen(ADDR2LINE) + 25 + strlen(binary_name) + 32 * e->used);
+
+ curr += sprintf(curr, "%s -f -e %s ", ADDR2LINE, binary_name);
free(binary_name);
-
- for (i=0; i<e->used;i++) {
+
+ for (i = 0; i < e->used; i++) {
/* retrieve this address */
DEBUG2("Retrieving address number %d from '%s'", i, backtrace_syms[i]);
- snprintf(buff,256,"%s",strchr(backtrace_syms[i],'[')+1);
- p=strchr(buff,']');
- *p='\0';
- if (strcmp(buff,"(nil)"))
- addrs[i]=bprintf("%s", buff);
+ snprintf(buff, 256, "%s", strchr(backtrace_syms[i], '[') + 1);
+ p = strchr(buff, ']');
+ *p = '\0';
+ if (strcmp(buff, "(nil)"))
+ addrs[i] = bprintf("%s", buff);
else
- addrs[i]=bprintf("0x0");
+ addrs[i] = bprintf("0x0");
DEBUG3("Set up a new address: %d, '%s'(%p)", i, addrs[i], addrs[i]);
-
+
/* Add it to the command line args */
- curr+=sprintf(curr,"%s ",addrs[i]);
- }
+ curr += sprintf(curr, "%s ", addrs[i]);
+ }
addr_len = strlen(addrs[0]);
/* parse the output and build a new backtrace */
- e->bt_strings = xbt_new(char*,e->used);
-
+ e->bt_strings = xbt_new(char *, e->used);
+
VERB1("Fire a first command: '%s'", cmd);
pipe = popen(cmd, "r");
if (!pipe) {
abort();
}
- for (i=0; i<e->used; i++) {
- DEBUG2("Looking for symbol %d, addr = '%s'", i, addrs[i]);
- fgets(line_func,1024,pipe);
- line_func[strlen(line_func)-1]='\0';
- fgets(line_pos,1024,pipe);
- line_pos[strlen(line_pos)-1]='\0';
+ for (i = 0; i < e->used; i++) {
+ DEBUG2("Looking for symbol %d, addr = '%s'", i, addrs[i]);
+ fgets(line_func, 1024, pipe);
+ line_func[strlen(line_func) - 1] = '\0';
+ fgets(line_pos, 1024, pipe);
+ line_pos[strlen(line_pos) - 1] = '\0';
- if (strcmp("??",line_func)) {
+ if (strcmp("??", line_func)) {
DEBUG2("Found static symbol %s() at %s", line_func, line_pos);
- e->bt_strings[i] = bprintf("** In %s() at %s", line_func,line_pos);
+ e->bt_strings[i] = bprintf("** In %s() at %s", line_func, line_pos);
} else {
/* Damn. The symbol is in a dynamic library. Let's get wild */
char *maps_name;
FILE *maps;
char maps_buff[512];
- long int addr,offset=0;
- char *p,*p2;
+ long int addr, offset = 0;
+ char *p, *p2;
char *subcmd;
FILE *subpipe;
- int found=0;
+ int found = 0;
/* let's look for the offset of this library in our addressing space */
- maps_name=bprintf("/proc/%d/maps",(int)getpid());
- maps=fopen(maps_name,"r");
-
- sscanf(addrs[i],"%lx",&addr);
- sprintf(maps_buff,"%#lx",addr);
-
- if (strcmp(addrs[i],maps_buff)) {
- CRITICAL2("Cannot parse backtrace address '%s' (addr=%#lx)",
- addrs[i], addr);
+ maps_name = bprintf("/proc/%d/maps", (int) getpid());
+ maps = fopen(maps_name, "r");
+
+ sscanf(addrs[i], "%lx", &addr);
+ sprintf(maps_buff, "%#lx", addr);
+
+ if (strcmp(addrs[i], maps_buff)) {
+ CRITICAL2("Cannot parse backtrace address '%s' (addr=%#lx)",
+ addrs[i], addr);
}
- DEBUG2("addr=%s (as string) =%#lx (as number)",addrs[i],addr);
+ DEBUG2("addr=%s (as string) =%#lx (as number)", addrs[i], addr);
while (!found) {
- long int first, last;
- if (fgets(maps_buff,512,maps) == NULL)
- break;
- if (i==0) {
- maps_buff[strlen(maps_buff) -1]='\0';
- DEBUG1("map line: %s", maps_buff);
- }
- sscanf(maps_buff,"%lx",&first);
- p=strchr(maps_buff,'-')+1;
- sscanf(p,"%lx",&last);
- if (first < addr && addr < last) {
- offset = first;
- found=1;
- }
- if (found) {
- DEBUG3("%#lx in [%#lx-%#lx]", addr, first,last);
- DEBUG0("Symbol found, map lines not further displayed (even if looking for next ones)");
- }
+ long int first, last;
+
+ if (fgets(maps_buff, 512, maps) == NULL)
+ break;
+ if (i == 0) {
+ maps_buff[strlen(maps_buff) - 1] = '\0';
+ DEBUG1("map line: %s", maps_buff);
+ }
+ sscanf(maps_buff, "%lx", &first);
+ p = strchr(maps_buff, '-') + 1;
+ sscanf(p, "%lx", &last);
+ if (first < addr && addr < last) {
+ offset = first;
+ found = 1;
+ }
+ if (found) {
+ DEBUG3("%#lx in [%#lx-%#lx]", addr, first, last);
+ DEBUG0
+ ("Symbol found, map lines not further displayed (even if looking for next ones)");
+ }
}
fclose(maps);
free(maps_name);
if (!found) {
- VERB0("Problem while reading the maps file. Following backtrace will be mangled.");
- DEBUG1("No dynamic. Static symbol: %s", backtrace_syms[i]);
- e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace_syms[i]);
- continue;
+ VERB0
+ ("Problem while reading the maps file. Following backtrace will be mangled.");
+ DEBUG1("No dynamic. Static symbol: %s", backtrace_syms[i]);
+ e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace_syms[i]);
+ continue;
}
/* Ok, Found the offset of the maps line containing the searched symbol.
- We now need to substract this from the address we got from backtrace.
- */
-
+ We now need to substract this from the address we got from backtrace.
+ */
+
free(addrs[i]);
- addrs[i] = bprintf("0x%0*lx",addr_len-2,addr-offset);
- DEBUG2("offset=%#lx new addr=%s",offset,addrs[i]);
+ addrs[i] = bprintf("0x%0*lx", addr_len - 2, addr - offset);
+ DEBUG2("offset=%#lx new addr=%s", offset, addrs[i]);
/* Got it. We have our new address. Let's get the library path and we
- are set */
- p = xbt_strdup(backtrace_syms[i]);
- if (p[0]=='[') {
- /* library path not displayed in the map file either... */
- free(p);
- sprintf(line_func,"??");
+ are set */
+ p = xbt_strdup(backtrace_syms[i]);
+ if (p[0] == '[') {
+ /* library path not displayed in the map file either... */
+ free(p);
+ sprintf(line_func, "??");
} else {
- p2 = strrchr(p,'(');
- if (p2) *p2= '\0';
- p2 = strrchr(p,' ');
- if(p2) *p2= '\0';
-
- /* Here we go, fire an addr2line up */
- subcmd = bprintf("%s -f -e %s %s",ADDR2LINE,p, addrs[i]);
- free(p);
- VERB1("Fire a new command: '%s'",subcmd);
- subpipe = popen(subcmd,"r");
- if (!subpipe) {
- CRITICAL0("Cannot fork addr2line to display the backtrace");
- abort();
- }
- fgets(line_func,1024,subpipe);
- line_func[strlen(line_func)-1]='\0';
- fgets(line_pos,1024,subpipe);
- line_pos[strlen(line_pos)-1]='\0';
- pclose(subpipe);
- free(subcmd);
+ p2 = strrchr(p, '(');
+ if (p2)
+ *p2 = '\0';
+ p2 = strrchr(p, ' ');
+ if (p2)
+ *p2 = '\0';
+
+ /* Here we go, fire an addr2line up */
+ subcmd = bprintf("%s -f -e %s %s", ADDR2LINE, p, addrs[i]);
+ free(p);
+ VERB1("Fire a new command: '%s'", subcmd);
+ subpipe = popen(subcmd, "r");
+ if (!subpipe) {
+ CRITICAL0("Cannot fork addr2line to display the backtrace");
+ abort();
+ }
+ fgets(line_func, 1024, subpipe);
+ line_func[strlen(line_func) - 1] = '\0';
+ fgets(line_pos, 1024, subpipe);
+ line_pos[strlen(line_pos) - 1] = '\0';
+ pclose(subpipe);
+ free(subcmd);
}
/* check whether the trick worked */
- if (strcmp("??",line_func)) {
- DEBUG2("Found dynamic symbol %s() at %s", line_func, line_pos);
- e->bt_strings[i] = bprintf("** In %s() at %s", line_func,line_pos);
+ if (strcmp("??", line_func)) {
+ DEBUG2("Found dynamic symbol %s() at %s", line_func, line_pos);
+ e->bt_strings[i] = bprintf("** In %s() at %s", line_func, line_pos);
} else {
- /* damn, nothing to do here. Let's print the raw address */
- DEBUG1("Dynamic symbol not found. Raw address = %s", backtrace_syms[i]);
- e->bt_strings[i] = bprintf("** In ?? at %s", backtrace_syms[i]);
+ /* damn, nothing to do here. Let's print the raw address */
+ DEBUG1("Dynamic symbol not found. Raw address = %s",
+ backtrace_syms[i]);
+ e->bt_strings[i] = bprintf("** In ?? at %s", backtrace_syms[i]);
}
-
+
}
free(addrs[i]);
-
- /* Mask the bottom of the stack */
- if (!strncmp("main",line_func,strlen("main")) ||
- !strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) {
- int j;
- for (j=i+1; j<e->used; j++)
- free(addrs[j]);
- e->used = i;
-
- if (!strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) {
- e->used++;
- e->bt_strings[i] = bprintf("** (in a separate thread)");
- }
+
+ /* Mask the bottom of the stack */
+ if (!strncmp("main", line_func, strlen("main")) ||
+ !strncmp("xbt_thread_context_wrapper", line_func,
+ strlen("xbt_thread_context_wrapper"))) {
+ int j;
+
+ for (j = i + 1; j < e->used; j++)
+ free(addrs[j]);
+ e->used = i;
+
+ if (!strncmp
+ ("xbt_thread_context_wrapper", line_func,
+ strlen("xbt_thread_context_wrapper"))) {
+ e->used++;
+ e->bt_strings[i] = bprintf("** (in a separate thread)");
+ }
}
-
-
+
+
}
pclose(pipe);
free(addrs);
#include <dbghelp.h>
/* Pointer function to SymInitialize() */
-typedef BOOL (WINAPI *xbt_pfn_sym_initialize_t)(HANDLE, PSTR , BOOL);
+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);
+typedef BOOL(WINAPI * xbt_pfn_sym_cleanup_t) (HANDLE hProcess);
/* Pointer function to SymFunctionTableAccess() */
-typedef PVOID (WINAPI *xbt_pfn_sym_function_table_access_t)(HANDLE, DWORD);
+typedef PVOID(WINAPI * xbt_pfn_sym_function_table_access_t) (HANDLE, DWORD);
/* Pointer function to SymGetLineFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_line_from_addr_t)(HANDLE, DWORD, PDWORD , PIMAGEHLP_LINE);
+typedef BOOL(WINAPI * xbt_pfn_sym_get_line_from_addr_t) (HANDLE, DWORD,
+ PDWORD,
+ PIMAGEHLP_LINE);
/* Pointer function to SymGetModuleBase() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_module_base_t)(HANDLE,DWORD);
+typedef DWORD(WINAPI * xbt_pfn_sym_get_module_base_t) (HANDLE, DWORD);
/* Pointer function to SymGetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_options_t)(VOID);
+typedef DWORD(WINAPI * xbt_pfn_sym_get_options_t) (VOID);
/* Pointer function to SymGetSymFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_sym_from_addr_t)(HANDLE, DWORD, PDWORD , OUT PIMAGEHLP_SYMBOL);
+typedef BOOL(WINAPI * xbt_pfn_sym_get_sym_from_addr_t) (HANDLE, DWORD, PDWORD,
+ OUT PIMAGEHLP_SYMBOL);
/* Pointer function to SymSetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_set_options_t)(DWORD);
+typedef DWORD(WINAPI * xbt_pfn_sym_set_options_t) (DWORD);
/* 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 * 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);
/* This structure represents the debug_help library used interface */
-typedef struct s_xbt_debug_help
-{
- 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;
+typedef struct s_xbt_debug_help {
+ 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;
+static xbt_debug_hlp_t dbg_hlp = NULL;
/* initialize the debug help library */
-static int
-dbg_hlp_init(HANDLE process_handle);
+static int dbg_hlp_init(HANDLE process_handle);
/* finalize the debug help library */
-static int
-dbg_hlp_finalize(void);
+static int dbg_hlp_finalize(void);
/*
* 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);
-
-void xbt_ex_setup_backtrace(xbt_ex_t *e) {
-int i;
-char **backtrace_syms = backtrace_symbols (e->bt, e->used);
-
- e->used = backtrace((void**)e->bt,XBT_BACKTRACE_SIZE);
+char **backtrace_symbols(void *const *buffer, int size);
+
+void xbt_ex_setup_backtrace(xbt_ex_t * e)
+{
+ int i;
+ char **backtrace_syms = backtrace_symbols(e->bt, e->used);
+
+ e->used = backtrace((void **) e->bt, XBT_BACKTRACE_SIZE);
e->bt_strings = NULL;
/* parse the output and build a new backtrace */
- e->bt_strings = xbt_new(char*,e->used);
-
+ e->bt_strings = xbt_new(char *, e->used);
- for(i=0; i<e->used; i++)
- {
- e->bt_strings[i] = xbt_strdup(backtrace_syms[i]);
- free(backtrace_syms[i]);
+
+ for (i = 0; i < e->used; i++) {
+ e->bt_strings[i] = xbt_strdup(backtrace_syms[i]);
+ free(backtrace_syms[i]);
}
-
+
free(backtrace_syms);
-}
+}
-int
-backtrace (void **buffer, int size)
+int backtrace(void **buffer, int size)
{
- 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 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;
}
- return pos;
+ 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;
+ }
+ }
+
+ return pos;
}
-char **
-backtrace_symbols (void *const *buffer, int size)
+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;
+ 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;
}
-static int
-dbg_hlp_init(HANDLE process_handle)
+static int dbg_hlp_init(HANDLE process_handle)
{
- 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;
+ 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;
}
-static int
-dbg_hlp_finalize(void)
+static int dbg_hlp_finalize(void)
{
- 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;
-}
+ 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;
+}
