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Implement non-working data breakpoints feedback

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This commit is contained in:
BullyWiiPlaza 2017-12-23 12:07:11 +01:00
parent 9ce7af45d7
commit 6b23b17d11
2 changed files with 39 additions and 37 deletions
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72
src/tcpgecko/hardware_breakpoints.h
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@ -41,53 +41,55 @@ static inline int getDABRAddress(void *interruptedContext) {
} }
unsigned char basicDABRBreakpointHandler(OSContext *context) { unsigned char basicDABRBreakpointHandler(OSContext *context) {
log_print("Getting DABR address\n"); // log_print("Getting DABR address\n");
int address = getDABRAddress(context); int address = getDABRAddress(context);
log_printf("Got DABR address: %08x\n", address); // log_printf("Got DABR address: %08x\n", address);
if (OSIsAddressValid((const void *) address)) { if (OSIsAddressValid((const void *) address)) {
log_printf("Data breakpoint address: %x08\n", address); // log_printf("Data breakpoint address: %x08\n", address);
} else { } else {
log_printf("Data breakpoint invalid address: %x08\n", address); // log_printf("Data breakpoint invalid address: %x08\n", address);
} }
return 0; return 0;
} }
static void SetDataBreakpoint(unsigned int address, bool read, bool write) { static void SetDataBreakpoint(unsigned int address, bool read, bool write) {
log_print("Before installing...\n"); // log_print("Before installing...\n");
DataBreakpoints_Install(); DataBreakpoints_Install();
log_print("After installing...\n"); // log_print("After installing...\n");
RegisterDataBreakpointHandler(basicDABRBreakpointHandler); RegisterDataBreakpointHandler(basicDABRBreakpointHandler);
log_print("After registering...\n"); // log_print("After registering...\n");
unsigned int dabr = address & ~0b00000111; //GCC \o/ unsigned int dabr = address & ~0b00000111; //GCC \o/
log_printf("DABR 1: %08x\n", dabr); // log_printf("DABR 1: %08x\n", dabr);
dabr |= 0b00000100; //enable translation dabr |= 0b00000100; //enable translation
log_printf("DABR 2: %08x\n", dabr); // log_printf("DABR 2: %08x\n", dabr);
if (read) { if (read) {
dabr |= 0b00000001; //break on read dabr |= 0b00000001; //break on read
log_printf("DABR 3: %08x\n", dabr); // log_printf("DABR 3: %08x\n", dabr);
} }
if (write) { if (write) {
dabr |= 0b00000010; //break on write dabr |= 0b00000010; //break on write
log_printf("DABR 4: %08x\n", dabr); // log_printf("DABR 4: %08x\n", dabr);
} }
log_print("Setting DABR...\n"); // log_print("Setting DABR...\n");
SC0x2D_KernelSetDABR(dabr); SC0x2D_KernelSetDABR(dabr);
log_print("DABR set!\n"); // log_print("DABR set!\n");
} }
static unsigned char DataBreakpoints_DSIHandler(void *ctx) { static unsigned char DataBreakpoints_DSIHandler(void *ctx) {
log_print("DSI handler\n"); // log_print("DSI handler\n");
OSContext *context = (OSContext *) ctx; /*OSContext *context = (OSContext *) ctx;
if (context->dsisr & DSISR_DABR_MATCH) { if (context->dsisr & DSISR_DABR_MATCH) {
log_print("Running BP handler\n"); // log_print("Running BP handler\n");
if (bHandler) {
return bHandler(context); return bHandler(context);
} }
}*/
log_print("DSI exception\n"); // log_print("DSI exception\n");
return dsi_exception_cb(ctx); return dsi_exception_cb(ctx);
} }
@ -144,14 +146,14 @@ static inline int getIABRMatch(void *interruptedContext) {
unsigned char breakPointHandler(void *interruptedContext); unsigned char breakPointHandler(void *interruptedContext);
void registerBreakPointHandler() { void registerBreakPointHandler() {
log_print("Registering breakpoint handler...\n"); // log_print("Registering breakpoint handler...\n");
// TODO Not working, never called? // TODO Not working, never called?
// OSSetExceptionCallback((u8) OS_EXCEPTION_DSI, &breakPointHandler); // OSSetExceptionCallback((u8) OS_EXCEPTION_DSI, &breakPointHandler);
// OSSetExceptionCallback((u8) OS_EXCEPTION_ISI, &breakPointHandler); // OSSetExceptionCallback((u8) OS_EXCEPTION_ISI, &breakPointHandler);
// OSSetExceptionCallback((u8) OS_EXCEPTION_PROGRAM, &breakPointHandler); // OSSetExceptionCallback((u8) OS_EXCEPTION_PROGRAM, &breakPointHandler);
OSSetExceptionCallbackEx((u8) OS_EXCEPTION_MODE_GLOBAL_ALL_CORES, (u8) OS_EXCEPTION_PROGRAM, &breakPointHandler); OSSetExceptionCallbackEx((u8) OS_EXCEPTION_MODE_GLOBAL_ALL_CORES, (u8) OS_EXCEPTION_PROGRAM, &breakPointHandler);
// __OSSetInterruptHandler((u8) OS_EXCEPTION_PROGRAM, &breakPointHandler); // __OSSetInterruptHandler((u8) OS_EXCEPTION_PROGRAM, &breakPointHandler);
log_print("Breakpoint handler(s) registered!\n"); // log_print("Breakpoint handler(s) registered!\n");
} }
/*void forceDebuggerInitialized() { /*void forceDebuggerInitialized() {
@ -165,11 +167,11 @@ void forceDebuggerPresent() {
}*/ }*/
static inline void setupBreakpointSupport() { static inline void setupBreakpointSupport() {
/*log_print("Clear and enable...\n"); /*// log_print("Clear and enable...\n");
__OSClearAndEnableInterrupt(); __OSClearAndEnableInterrupt();
log_print("Restore...\n"); // log_print("Restore...\n");
OSRestoreInterrupts(); OSRestoreInterrupts();
log_print("Enable...\n"); // log_print("Enable...\n");
OSEnableInterrupts(); OSEnableInterrupts();
forceDebuggerPresent(); forceDebuggerPresent();
forceDebuggerInitialized();*/ forceDebuggerInitialized();*/
@ -179,11 +181,11 @@ static inline void setupBreakpointSupport() {
void setDataBreakpoint(int address, bool read, bool write) { void setDataBreakpoint(int address, bool read, bool write) {
setupBreakpointSupport(); setupBreakpointSupport();
log_print("Setting DABR...\n"); // log_print("Setting DABR...\n");
OSSetDABR(1, address, read, write); OSSetDABR(1, address, read, write);
log_print("DABR set\n"); // log_print("DABR set\n");
int enabled = OSIsInterruptEnabled(); int enabled = OSIsInterruptEnabled();
log_printf("Interrupts enabled: %i\n", enabled); // log_printf("Interrupts enabled: %i\n", enabled);
} }
void setInstructionBreakpoint(unsigned int address) { void setInstructionBreakpoint(unsigned int address) {
@ -191,36 +193,36 @@ void setInstructionBreakpoint(unsigned int address) {
// int returnedAddress; // int returnedAddress;
log_print("Setting IABR #1...\n"); // log_print("Setting IABR #1...\n");
// OSSetIABR(1, address); // OSSetIABR(1, address);
setIABR(address); setIABR(address);
log_print("IABR set #1...\n"); // log_print("IABR set #1...\n");
/* /*
// TODO Causes crash // TODO Causes crash
returnedAddress = getIABRAddress(); returnedAddress = getIABRAddress();
log_printf("IABR spr value: %08x\n", returnedAddress); // log_printf("IABR spr value: %08x\n", returnedAddress);
log_print("Setting IABR #2...\n"); // log_print("Setting IABR #2...\n");
setIABR(address); setIABR(address);
log_print("IABR set #2...\n"); // log_print("IABR set #2...\n");
returnedAddress = mfspr(IABR); returnedAddress = mfspr(IABR);
log_printf("IABR spr value: %08x\n", returnedAddress);*/ // log_printf("IABR spr value: %08x\n", returnedAddress);*/
} }
unsigned char breakPointHandler(void *interruptedContext) { unsigned char breakPointHandler(void *interruptedContext) {
// Check for data breakpoints // Check for data breakpoints
int dataAddress = getDABRAddress(interruptedContext); int dataAddress = getDABRAddress(interruptedContext);
if (OSIsAddressValid((const void *) dataAddress)) { if (OSIsAddressValid((const void *) dataAddress)) {
log_printf("Data breakpoint address: %x08\n", dataAddress); // log_printf("Data breakpoint address: %x08\n", dataAddress);
} else { } else {
log_printf("Data breakpoint invalid address: %x08\n", dataAddress); // log_printf("Data breakpoint invalid address: %x08\n", dataAddress);
// Check for instruction breakpoints // Check for instruction breakpoints
int instructionAddress = getIABRMatch(interruptedContext); int instructionAddress = getIABRMatch(interruptedContext);
if (OSIsAddressValid((const void *) instructionAddress)) { if (OSIsAddressValid((const void *) instructionAddress)) {
log_printf("Instruction breakpoint address: %x08\n", dataAddress); // log_printf("Instruction breakpoint address: %x08\n", dataAddress);
} else { } else {
log_print("Instruction breakpoint failed!\n"); // log_print("Instruction breakpoint failed!\n");
} }
} }

BIN
tcpgecko.elf
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