static void _checkBreakpoints(struct ARMDebugger* debugger) {
int instructionLength;
enum ExecutionMode mode = debugger->cpu->cpsr.t;
if (mode == MODE_ARM) {
instructionLength = WORD_SIZE_ARM;
} else {
instructionLength = WORD_SIZE_THUMB;
}
struct DebugBreakpoint* breakpoint = _lookupBreakpoint(&debugger->breakpoints, debugger->cpu->gprs[ARM_PC] - instructionLength);
if (!breakpoint) {
return;
}
struct DebuggerEntryInfo info = {
.address = breakpoint->address
};
ARMDebuggerEnter(debugger, DEBUGGER_ENTER_BREAKPOINT, &info);
}
static void ARMDebuggerInit(struct ARMCore*, struct ARMComponent*);
static void ARMDebuggerDeinit(struct ARMComponent*);
void ARMDebuggerCreate(struct ARMDebugger* debugger) {
debugger->d.id = ARM_DEBUGGER_ID;
debugger->d.init = ARMDebuggerInit;
debugger->d.deinit = ARMDebuggerDeinit;
}
static void LR35902DebuggerCheckBreakpoints(struct mDebuggerPlatform* d) {
struct LR35902Debugger* debugger = (struct LR35902Debugger*) d;
struct LR35902DebugBreakpoint* breakpoint = _lookupBreakpoint(&debugger->breakpoints, debugger->cpu->pc - 1);
if (!breakpoint) {
return;
}
// TODO: Segments
struct mDebuggerEntryInfo info = {
.address = breakpoint->address
};
mDebuggerEnter(d->p, DEBUGGER_ENTER_BREAKPOINT, &info);
}
static void LR35902DebuggerInit(void* cpu, struct mDebuggerPlatform* platform);
static void LR35902DebuggerDeinit(struct mDebuggerPlatform* platform);
static void LR35902DebuggerEnter(struct mDebuggerPlatform* d, enum mDebuggerEntryReason reason, struct mDebuggerEntryInfo* info);
static void LR35902DebuggerSetBreakpoint(struct mDebuggerPlatform*, uint32_t address);
static void LR35902DebuggerClearBreakpoint(struct mDebuggerPlatform*, uint32_t address);
static void LR35902DebuggerCheckBreakpoints(struct mDebuggerPlatform*);
static bool LR35902DebuggerHasBreakpoints(struct mDebuggerPlatform*);
struct mDebuggerPlatform* LR35902DebuggerPlatformCreate(void) {
struct mDebuggerPlatform* platform = (struct mDebuggerPlatform*) malloc(sizeof(struct LR35902Debugger));
platform->entered = LR35902DebuggerEnter;
platform->init = LR35902DebuggerInit;
platform->deinit = LR35902DebuggerDeinit;
platform->setBreakpoint = LR35902DebuggerSetBreakpoint;
platform->clearBreakpoint = LR35902DebuggerClearBreakpoint;
platform->setWatchpoint = NULL;
platform->clearWatchpoint = NULL;
platform->checkBreakpoints = LR35902DebuggerCheckBreakpoints;
platform->hasBreakpoints = LR35902DebuggerHasBreakpoints;
return platform;
}
void LR35902DebuggerInit(void* cpu, struct mDebuggerPlatform* platform) {
struct LR35902Debugger* debugger = (struct LR35902Debugger*) platform;
debugger->cpu = cpu;
LR35902DebugBreakpointListInit(&debugger->breakpoints, 0);
LR35902DebugWatchpointListInit(&debugger->watchpoints, 0);
}
void LR35902DebuggerDeinit(struct mDebuggerPlatform* platform) {
struct LR35902Debugger* debugger = (struct LR35902Debugger*) platform;
LR35902DebugBreakpointListDeinit(&debugger->breakpoints);
LR35902DebugWatchpointListDeinit(&debugger->watchpoints);
}
static void LR35902DebuggerEnter(struct mDebuggerPlatform* platform, enum mDebuggerEntryReason reason, struct mDebuggerEntryInfo* info) {
UNUSED(reason);
UNUSED(info);
struct LR35902Debugger* debugger = (struct LR35902Debugger*) platform;
struct LR35902Core* cpu = debugger->cpu;
cpu->nextEvent = cpu->cycles;
}
void ARMDebuggerEnter(struct ARMDebugger* debugger, enum DebuggerEntryReason reason, struct DebuggerEntryInfo* info) {
debugger->state = DEBUGGER_PAUSED;
struct ARMCore* cpu = debugger->cpu;
cpu->nextEvent = cpu->cycles;
if (reason == DEBUGGER_ENTER_BREAKPOINT) {
struct DebugBreakpoint* breakpoint = _lookupBreakpoint(&debugger->swBreakpoints, _ARMPCAddress(cpu));
debugger->currentBreakpoint = breakpoint;
if (breakpoint && breakpoint->isSw) {
info->address = breakpoint->address;
if (debugger->clearSoftwareBreakpoint) {
debugger->clearSoftwareBreakpoint(debugger, breakpoint->address, breakpoint->sw.mode, breakpoint->sw.opcode);
}
ARMRunFake(cpu, breakpoint->sw.opcode);
}
}
if (debugger->entered) {
debugger->entered(debugger, reason, info);
}
}
