mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-08 02:10:14 +02:00
376 lines
9.4 KiB
C++
376 lines
9.4 KiB
C++
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is nsStackFrameWin.h code, released
|
|
* December 20, 2000.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2003
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsStackFrameUnix.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
#include "nscore.h"
|
|
|
|
// On glibc 2.1, the Dl_info api defined in <dlfcn.h> is only exposed
|
|
// if __USE_GNU is defined. I suppose its some kind of standards
|
|
// adherence thing.
|
|
//
|
|
#if (__GLIBC_MINOR__ >= 1) && !defined(__USE_GNU)
|
|
#define __USE_GNU
|
|
#endif
|
|
|
|
#ifdef HAVE_LIBDL
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
|
|
|
|
// This thing is exported by libstdc++
|
|
// Yes, this is a gcc only hack
|
|
#if defined(MOZ_DEMANGLE_SYMBOLS)
|
|
#include <cxxabi.h>
|
|
#include <stdlib.h> // for free()
|
|
#endif // MOZ_DEMANGLE_SYMBOLS
|
|
|
|
void DemangleSymbol(const char * aSymbol,
|
|
char * aBuffer,
|
|
int aBufLen)
|
|
{
|
|
aBuffer[0] = '\0';
|
|
|
|
#if defined(MOZ_DEMANGLE_SYMBOLS)
|
|
/* See demangle.h in the gcc source for the voodoo */
|
|
char * demangled = abi::__cxa_demangle(aSymbol,0,0,0);
|
|
|
|
if (demangled)
|
|
{
|
|
strncpy(aBuffer,demangled,aBufLen);
|
|
free(demangled);
|
|
}
|
|
#endif // MOZ_DEMANGLE_SYMBOLS
|
|
}
|
|
|
|
|
|
#if defined(linux) && defined(__GNUC__) && (defined(__i386) || defined(PPC) || defined(__x86_64__)) // i386 or PPC Linux stackwalking code
|
|
|
|
|
|
void DumpStackToFile(FILE* aStream)
|
|
{
|
|
// Stack walking code courtesy Kipp's "leaky".
|
|
|
|
// Get the frame pointer
|
|
void **bp;
|
|
#if defined(__i386)
|
|
__asm__( "movl %%ebp, %0" : "=g"(bp));
|
|
#elif defined(__x86_64__)
|
|
__asm__( "movq %%rbp, %0" : "=g"(bp));
|
|
#else
|
|
// It would be nice if this worked uniformly, but at least on i386 and
|
|
// x86_64, it stopped working with gcc 4.1, because it points to the
|
|
// end of the saved registers instead of the start.
|
|
bp = (void**) __builtin_frame_address(0);
|
|
#endif
|
|
|
|
int skip = 2;
|
|
for ( ; (void**)*bp > bp; bp = (void**)*bp) {
|
|
void *pc = *(bp+1);
|
|
if (--skip <= 0) {
|
|
Dl_info info;
|
|
int ok = dladdr(pc, &info);
|
|
if (!ok) {
|
|
fprintf(aStream, "UNKNOWN %p\n", pc);
|
|
continue;
|
|
}
|
|
|
|
PRUint32 foff = (char*)pc - (char*)info.dli_fbase;
|
|
|
|
const char * symbol = info.dli_sname;
|
|
int len;
|
|
if (!symbol || !(len = strlen(symbol))) {
|
|
fprintf(aStream, "UNKNOWN [%s +0x%08X]\n",
|
|
info.dli_fname, foff);
|
|
continue;
|
|
}
|
|
|
|
char demangled[4096] = "\0";
|
|
|
|
DemangleSymbol(symbol, demangled, sizeof(demangled));
|
|
|
|
if (strlen(demangled)) {
|
|
symbol = demangled;
|
|
len = strlen(symbol);
|
|
}
|
|
|
|
PRUint32 off = (char*)pc - (char*)info.dli_saddr;
|
|
fprintf(aStream, "%s+0x%08X [%s +0x%08X]\n",
|
|
symbol, off, info.dli_fname, foff);
|
|
}
|
|
}
|
|
}
|
|
|
|
#elif defined(__sun) && (defined(__sparc) || defined(sparc) || defined(__i386) || defined(i386))
|
|
|
|
/*
|
|
* Stack walking code for Solaris courtesy of Bart Smaalder's "memtrak".
|
|
*/
|
|
|
|
#include <synch.h>
|
|
#include <ucontext.h>
|
|
#include <sys/frame.h>
|
|
#include <sys/regset.h>
|
|
#include <sys/stack.h>
|
|
|
|
static int load_address ( void * pc, void * arg, FILE * aStream );
|
|
static int write_address_file ( void * pc );
|
|
static struct bucket * newbucket ( void * pc );
|
|
static struct frame * cs_getmyframeptr ( void );
|
|
static void cs_walk_stack ( void * (*read_func)(char * address),
|
|
struct frame * fp,
|
|
int (*operate_func)(void *, void *),
|
|
void * usrarg, FILE * aStream );
|
|
static void cs_operate ( void (*operate_func)(void *, void *),
|
|
void * usrarg, FILE * aStream );
|
|
|
|
#ifndef STACK_BIAS
|
|
#define STACK_BIAS 0
|
|
#endif /*STACK_BIAS*/
|
|
|
|
#define LOGSIZE 4096
|
|
|
|
/* type of demangling function */
|
|
typedef int demf_t(const char *, char *, size_t);
|
|
|
|
static demf_t *demf;
|
|
|
|
static int initialized = 0;
|
|
|
|
#if defined(sparc) || defined(__sparc)
|
|
#define FRAME_PTR_REGISTER REG_SP
|
|
#endif
|
|
|
|
#if defined(i386) || defined(__i386)
|
|
#define FRAME_PTR_REGISTER EBP
|
|
#endif
|
|
|
|
struct bucket {
|
|
void * pc;
|
|
int index;
|
|
struct bucket * next;
|
|
};
|
|
|
|
struct mybuf {
|
|
char * buffer;
|
|
int chars_left;
|
|
};
|
|
|
|
|
|
static void myinit();
|
|
|
|
#pragma init (myinit)
|
|
|
|
static void
|
|
myinit()
|
|
{
|
|
|
|
if (! initialized) {
|
|
#ifndef __GNUC__
|
|
void *handle;
|
|
const char *libdem = "libdemangle.so.1";
|
|
|
|
/* load libdemangle if we can and need to (only try this once) */
|
|
if ((handle = dlopen(libdem, RTLD_LAZY)) != NULL) {
|
|
demf = (demf_t *)dlsym(handle,
|
|
"cplus_demangle"); /*lint !e611 */
|
|
/*
|
|
* lint override above is to prevent lint from
|
|
* complaining about "suspicious cast".
|
|
*/
|
|
}
|
|
#endif /*__GNUC__*/
|
|
}
|
|
initialized = 1;
|
|
}
|
|
|
|
|
|
static int
|
|
write_address_file(void * pc, FILE* aStream)
|
|
{
|
|
static struct bucket table[2048];
|
|
static mutex_t lock;
|
|
struct bucket * ptr;
|
|
|
|
unsigned int val = NS_PTR_TO_INT32(pc);
|
|
|
|
ptr = table + ((val >> 2)&2047);
|
|
|
|
mutex_lock(&lock);
|
|
while (ptr->next) {
|
|
if (ptr->next->pc == pc)
|
|
break;
|
|
ptr = ptr->next;
|
|
}
|
|
|
|
if (ptr->next) {
|
|
mutex_unlock(&lock);
|
|
return (ptr->next->index);
|
|
} else {
|
|
char buffer[4096], dembuff[4096];
|
|
Dl_info info;
|
|
const char *func = "??", *lib = "??";
|
|
|
|
ptr->next = newbucket(pc);
|
|
mutex_unlock(&lock);
|
|
|
|
if (dladdr(pc, & info)) {
|
|
if (info.dli_fname)
|
|
lib = info.dli_fname;
|
|
if (info.dli_sname)
|
|
func = info.dli_sname;
|
|
}
|
|
|
|
#ifdef __GNUC__
|
|
DemangleSymbol(func, dembuff, sizeof(dembuff));
|
|
#else
|
|
if (!demf || demf(func, dembuff, sizeof (dembuff)))
|
|
dembuff[0] = 0;
|
|
#endif /*__GNUC__*/
|
|
if (strlen(dembuff)) {
|
|
func = dembuff;
|
|
}
|
|
fprintf(aStream, "%u %s:%s+0x%x\n",
|
|
ptr->next->index,
|
|
lib,
|
|
func,
|
|
(char *)pc - (char*)info.dli_saddr);
|
|
|
|
return (ptr->next->index);
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
load_address(void * pc, void * arg, FILE * aStream)
|
|
{
|
|
struct mybuf * buf = (struct mybuf *) arg;
|
|
|
|
char name[80];
|
|
int len;
|
|
|
|
sprintf(name, " %u", write_address_file(pc, aStream));
|
|
|
|
len = strlen(name);
|
|
|
|
if (len >= buf->chars_left)
|
|
return (1);
|
|
|
|
strcat(buf->buffer, name);
|
|
|
|
buf->chars_left -= len;
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
static struct bucket *
|
|
newbucket(void * pc)
|
|
{
|
|
struct bucket * ptr = (struct bucket *) malloc(sizeof (*ptr));
|
|
static int index; /* protected by lock in caller */
|
|
|
|
ptr->index = index++;
|
|
ptr->next = NULL;
|
|
ptr->pc = pc;
|
|
return (ptr);
|
|
}
|
|
|
|
|
|
static struct frame *
|
|
csgetframeptr()
|
|
{
|
|
ucontext_t u;
|
|
struct frame *fp;
|
|
|
|
(void) getcontext(&u);
|
|
|
|
fp = (struct frame *)
|
|
((char *)u.uc_mcontext.gregs[FRAME_PTR_REGISTER] +
|
|
STACK_BIAS);
|
|
|
|
/* make sure to return parents frame pointer.... */
|
|
|
|
return ((struct frame *)((ulong_t)fp->fr_savfp + STACK_BIAS));
|
|
}
|
|
|
|
|
|
static void
|
|
cswalkstack(struct frame *fp, int (*operate_func)(void *, void *, FILE *),
|
|
void *usrarg, FILE * aStream)
|
|
{
|
|
|
|
while (fp != 0 && fp->fr_savpc != 0) {
|
|
|
|
if (operate_func((void *)fp->fr_savpc, usrarg, aStream) != 0)
|
|
break;
|
|
/*
|
|
* watch out - libthread stacks look funny at the top
|
|
* so they may not have their STACK_BIAS set
|
|
*/
|
|
|
|
fp = (struct frame *)((ulong_t)fp->fr_savfp +
|
|
(fp->fr_savfp?(ulong_t)STACK_BIAS:0));
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
cs_operate(int (*operate_func)(void *, void *, FILE *), void * usrarg, FILE *aStream)
|
|
{
|
|
cswalkstack(csgetframeptr(), operate_func, usrarg, aStream);
|
|
}
|
|
|
|
void DumpStackToFile(FILE* aStream)
|
|
{
|
|
char buffer[LOGSIZE];
|
|
struct mybuf mybuf;
|
|
|
|
if (!initialized)
|
|
myinit();
|
|
|
|
mybuf.chars_left = LOGSIZE - strlen(buffer)-1;
|
|
mybuf.buffer = buffer;
|
|
cs_operate(load_address, &mybuf, aStream);
|
|
}
|
|
#endif
|