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Diffstat (limited to 'third_party/backtrace-mingw/backtrace.c')
-rw-r--r--third_party/backtrace-mingw/backtrace.c62
1 files changed, 35 insertions, 27 deletions
diff --git a/third_party/backtrace-mingw/backtrace.c b/third_party/backtrace-mingw/backtrace.c
index b9ddcf4..cd5a255 100644
--- a/third_party/backtrace-mingw/backtrace.c
+++ b/third_party/backtrace-mingw/backtrace.c
@@ -61,6 +61,7 @@ struct bfd_set {
struct find_info {
asymbol **symbol;
bfd_vma counter;
+ bfd_vma base_addr;
const char *file;
const char *func;
unsigned line;
@@ -138,7 +139,7 @@ output_print(struct output_buffer *ob, const char * format, ...)
ob->buf[ob->ptr] = '\0';
va_list ap;
va_start(ap,format);
- vsnprintf(ob->buf + ob->ptr , ob->sz - ob->ptr , format, ap);
+ vsnprintf(ob->buf + ob->ptr, ob->sz - ob->ptr, format, ap);
va_end(ap);
ob->ptr = strlen(ob->buf + ob->ptr) + ob->ptr;
@@ -152,23 +153,27 @@ lookup_section(bfd *abfd, asection *sec, void *opaque_data)
if (data->func)
return;
- if (!(bfd_get_section_flags(abfd, sec) & SEC_ALLOC))
+ if (!(bfd_section_flags(sec) & SEC_ALLOC))
return;
- bfd_vma vma = bfd_get_section_vma(abfd, sec);
- if (data->counter < vma || vma + bfd_get_section_size(sec) <= data->counter)
- return;
+ bfd_vma vma = bfd_section_vma(sec);
+ bfd_vma addr = data->counter;
+ if (addr < vma || addr >= vma + bfd_section_size(sec))
+ addr -= data->base_addr; //relocated?
+ if (addr < vma || addr >= vma + bfd_section_size(sec))
+ return;
- bfd_find_nearest_line(abfd, sec, data->symbol, data->counter - vma, &(data->file), &(data->func), &(data->line));
+ bfd_find_nearest_line(abfd, sec, data->symbol, addr - vma, &(data->file), &(data->func), &(data->line));
}
static void
-find(struct bfd_ctx * b, DWORD offset, const char **file, const char **func, unsigned *line)
+find_sym(struct bfd_ctx * b, DWORD64 offset, DWORD64 base, const char **file, const char **func, unsigned *line)
{
struct find_info data;
data.func = NULL;
data.symbol = b->symbol;
data.counter = offset;
+ data.base_addr = base;
data.file = NULL;
data.func = NULL;
data.line = 0;
@@ -242,10 +247,10 @@ close_bfd_ctx(struct bfd_ctx *bc)
}
static struct bfd_ctx *
-get_bc(struct bfd_set *set , const char *procname, int *err)
+get_bc(struct bfd_set *set, const char *procname, int *err)
{
while(set->name) {
- if (strcmp(set->name , procname) == 0) {
+ if (strcmp(set->name, procname) == 0) {
return set->bc;
}
set = set->next;
@@ -277,15 +282,12 @@ release_set(struct bfd_set *set)
static void
_backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT context)
{
- char procname[MAX_PATH];
- GetModuleFileNameA(NULL, procname, sizeof procname);
-
struct bfd_ctx *bc = NULL;
int err = BFD_ERR_OK;
DWORD machine_type = 0;
- STACKFRAME frame;
- memset(&frame,0,sizeof(frame));
+ STACKFRAME64 frame;
+ memset(&frame, 0, sizeof(frame));
#if defined(_M_IX86) || defined(__i386__)
machine_type = IMAGE_FILE_MACHINE_I386;
@@ -317,8 +319,8 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
&frame,
context,
0,
- SymFunctionTableAccess,
- SymGetModuleBase, 0)) {
+ SymFunctionTableAccess64,
+ SymGetModuleBase64, 0)) {
--depth;
if (depth < 0)
@@ -328,7 +330,7 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
symbol->SizeOfStruct = (sizeof *symbol) + 255;
symbol->MaxNameLength = 254;
- DWORD module_base = SymGetModuleBase(process, frame.AddrPC.Offset);
+ DWORD64 module_base = SymGetModuleBase64(process, frame.AddrPC.Offset);
const char * module_name = "[unknown module]";
if (module_base &&
@@ -337,17 +339,21 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
bc = get_bc(set, module_name, &err);
}
+ PLOADED_IMAGE exeimg = ImageLoad(module_name, NULL);
+ DWORD64 imbase = exeimg->FileHeader->OptionalHeader.ImageBase;
+ ImageUnload(exeimg);
+
const char * source_file = NULL;
const char * func = NULL;
unsigned line = 0;
if (bc) {
- find(bc,frame.AddrPC.Offset,&source_file,&func,&line);
+ find_sym(bc, frame.AddrPC.Offset, module_base - imbase, &source_file, &func, &line);
}
if (source_file == NULL) {
- DWORD dummy = 0;
- if (SymGetSymFromAddr(process, frame.AddrPC.Offset, &dummy, symbol)) {
+ DWORD64 dummy = 0;
+ if (SymGetSymFromAddr64(process, frame.AddrPC.Offset, &dummy, symbol)) {
source_file = symbol->Name;
}
else {
@@ -355,14 +361,14 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
}
}
if (func == NULL) {
- output_print(ob,"0x%08x from %s in %s %s \n",
+ output_print(ob, "0x%08llx from %s in %s %s \n",
frame.AddrPC.Offset,
module_name,
source_file,
bfd_errors[err]);
}
else {
- output_print(ob,"0x%08x in %s at %s:%d from %s \n",
+ output_print(ob, "0x%08llx in %s at %s:%d from %s \n",
frame.AddrPC.Offset,
func,
source_file,
@@ -387,7 +393,7 @@ exception_filter(LPEXCEPTION_POINTERS info)
else {
bfd_init();
PEXCEPTION_RECORD rec = info->ExceptionRecord;
- output_print(&ob,"Unhandled exception occured at 0x%08x: %s.\n",
+ output_print(&ob,"Unhandled exception occured at 0x%08llx: %s.\n",
rec->ExceptionAddress,
exception_name(rec->ExceptionCode)
);
@@ -399,14 +405,16 @@ exception_filter(LPEXCEPTION_POINTERS info)
output_print(&ob, "The data at memory address 0x%08x could not be %s.\n",
rec->ExceptionInformation[1], op);
}
- struct bfd_set *set = calloc(1,sizeof(*set));
- _backtrace(&ob , set , 128 , info->ContextRecord);
+ struct bfd_set *set = calloc(1, sizeof(*set));
+ _backtrace(&ob, set, 128, info->ContextRecord);
release_set(set);
SymCleanup(GetCurrentProcess());
}
- fputs(g_output , stderr);
+ FILE *btf = fopen("backtrace.log", "w");
+ fputs(g_output, btf);
+ fclose(btf);
return EXCEPTION_CONTINUE_SEARCH;
}
@@ -436,7 +444,7 @@ __printf__(const char * format, ...) {
int value;
va_list arg;
va_start(arg, format);
- value = vprintf ( format, arg );
+ value = vprintf(format, arg);
va_end(arg);
return value;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 20:29:41 +0000