apple2ix/Android/jni/jnicrash.c

141 lines
3.7 KiB
C

/*
* Apple // emulator for *ix
*
* This software package is subject to the GNU General Public License
* version 3 or later (your choice) as published by the Free Software
* Foundation.
*
* Copyright 2015 Aaron Culliney
*
*/
#include "common.h"
// Keep these in sync with the Java side
enum {
CRASH_JAVA=0,
CRASH_NULL_DEREF,
CRASH_STACKCALL_OVERFLOW,
CRASH_STACKBUF_OVERFLOW,
// MOAR!
};
#include <jni.h>
static volatile int __attribute__((noinline)) _crash_null_deref(void) {
static volatile uintptr_t *ptr = NULL;
while ((ptr+1)) {
*ptr++ = 0xAA;
}
return (int)ptr[0];
}
static volatile int (*funPtr0)(void) = NULL;
static volatile int __attribute__((noinline)) _crash_stackcall_overflow(void) {
if (funPtr0) {
funPtr0();
funPtr0 = NULL;
} else {
funPtr0 = &_crash_stackcall_overflow;
funPtr0();
}
return getpid();
}
static volatile int (*funPtr1)(unsigned int) = NULL;
static volatile int __attribute__((noinline)) _crash_stackbuf_overflow0(unsigned int smashSize) {
volatile char buf[32];
memset((char *)buf, 0x55, smashSize);
return (int)&buf[0];
}
static volatile int __attribute__((noinline)) _crash_stackbuf_overflow(void) {
static volatile unsigned int smashSize = 0;
while (1) {
if (funPtr1) {
funPtr1(smashSize);
funPtr1 = NULL;
} else {
funPtr1 = &_crash_stackbuf_overflow0;
funPtr1(smashSize);
}
smashSize += 32;
if (!smashSize) {
break;
}
}
return getpid();
}
void Java_org_deadc0de_apple2ix_Apple2CrashHandler_nativePerformCrash(JNIEnv *env, jclass cls, jint crashType) {
#warning FIXME TODO ... we should turn off test codepaths in release build =D
LOG("... performing crash of type : %d", crashType);
switch (crashType) {
case CRASH_NULL_DEREF:
_crash_null_deref();
break;
case CRASH_STACKCALL_OVERFLOW:
_crash_stackcall_overflow();
break;
case CRASH_STACKBUF_OVERFLOW:
_crash_stackbuf_overflow();
break;
default:
// unknown crasher, just abort ...
abort();
break;
}
}
void Java_org_deadc0de_apple2ix_Apple2CrashHandler_nativeProcessCrash(JNIEnv *env, jclass cls, jstring jCrashPath, jstring jOutputPath) {
if (!(crashHandler && crashHandler->processCrash)) {
return;
}
LOG("...");
const char *crashPath = (*env)->GetStringUTFChars(env, jCrashPath, NULL);
const char *outputPath = (*env)->GetStringUTFChars(env, jOutputPath, NULL);
FILE *outputFILE = NULL;
char *symbolsPath = NULL;
do {
outputFILE = TEMP_FAILURE_RETRY_FOPEN(fopen(outputPath, "w"));
if (!outputFILE) {
ERRLOG("could not open %s", outputPath);
break;
}
if (android_armArchV7A) {
ASPRINTF(&symbolsPath, "%s/symbols/armeabi-v7a", data_dir);
} else if (android_x86) {
ASPRINTF(&symbolsPath, "%s/symbols/x86", data_dir);
} else /*if (android_armArch)*/ {
ASPRINTF(&symbolsPath, "%s/symbols/armeabi", data_dir);
} /*else { moar archs ... } */
bool success = crashHandler->processCrash(crashPath, symbolsPath, outputFILE);
if (!success) {
RELEASE_LOG("CRASH REPORT PROCESSING FAILED ...");
}
} while (0);
if (outputFILE) {
TEMP_FAILURE_RETRY(fflush(outputFILE));
TEMP_FAILURE_RETRY(fclose(outputFILE));
}
if (symbolsPath) {
FREE(symbolsPath);
}
(*env)->ReleaseStringUTFChars(env, jCrashPath, crashPath);
(*env)->ReleaseStringUTFChars(env, jOutputPath, outputPath);
}