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Add disassemble CLI debugger command

This commit is contained in:
Jeffrey Pfau 2014-07-12 03:36:04 -07:00
parent aefa5f0ab8
commit 5b7a551ed8
1 changed files with 39 additions and 2 deletions
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41
src/debugger/cli-debugger.c
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@ -28,6 +28,7 @@ typedef void (DebuggerCommand)(struct CLIDebugger*, struct DebugVector*);
static void _breakInto(struct CLIDebugger*, struct DebugVector*);
static void _continue(struct CLIDebugger*, struct DebugVector*);
static void _disassemble(struct CLIDebugger*, struct DebugVector*);
static void _next(struct CLIDebugger*, struct DebugVector*);
static void _print(struct CLIDebugger*, struct DebugVector*);
static void _printHex(struct CLIDebugger*, struct DebugVector*);
@ -41,6 +42,7 @@ static void _clearBreakpoint(struct CLIDebugger*, struct DebugVector*);
static void _setWatchpoint(struct CLIDebugger*, struct DebugVector*);
static void _breakIntoDefault(int signal);
static void _printLine(struct CLIDebugger* debugger, uint32_t address, enum ExecutionMode mode);
static struct {
const char* name;
@ -52,6 +54,8 @@ static struct {
{ "continue", _continue },
{ "d", _clearBreakpoint },
{ "delete", _clearBreakpoint },
{ "dis", _disassemble },
{ "disasm", _disassemble },
{ "i", _printStatus },
{ "info", _printStatus },
{ "n", _next },
@ -116,6 +120,39 @@ static void _next(struct CLIDebugger* debugger, struct DebugVector* dv) {
_printStatus(debugger, 0);
}
static void _disassemble(struct CLIDebugger* debugger, struct DebugVector* dv) {
uint32_t address;
int size;
int wordSize;
enum ExecutionMode mode = debugger->d.cpu->executionMode;
if (mode == MODE_ARM) {
wordSize = WORD_SIZE_ARM;
} else {
wordSize = WORD_SIZE_THUMB;
}
if (!dv || dv->type != INT_TYPE) {
address = debugger->d.cpu->gprs[ARM_PC] - wordSize;
} else {
address = dv->intValue;
dv = dv->next;
}
if (!dv || dv->type != INT_TYPE) {
size = 1;
} else {
size = dv->intValue;
dv = dv->next; // TODO: Check for excess args
}
int i;
for (i = 0; i < size; ++i) {
_printLine(debugger, address, mode);
address += wordSize;
}
}
static void _print(struct CLIDebugger* debugger, struct DebugVector* dv) {
UNUSED(debugger);
for ( ; dv; dv = dv->next) {
@ -138,12 +175,12 @@ static inline void _printLine(struct CLIDebugger* debugger, uint32_t address, en
if (mode == MODE_ARM) {
uint32_t instruction = debugger->d.cpu->memory.load32(debugger->d.cpu, address, 0);
ARMDecodeARM(instruction, &info);
ARMDisassemble(&info, debugger->d.cpu->gprs[ARM_PC] + WORD_SIZE_ARM, disassembly, sizeof(disassembly));
ARMDisassemble(&info, address + WORD_SIZE_ARM * 2, disassembly, sizeof(disassembly));
printf("%08X: %s\n", instruction, disassembly);
} else {
uint16_t instruction = debugger->d.cpu->memory.loadU16(debugger->d.cpu, address, 0);
ARMDecodeThumb(instruction, &info);
ARMDisassemble(&info, debugger->d.cpu->gprs[ARM_PC] + WORD_SIZE_THUMB, disassembly, sizeof(disassembly));
ARMDisassemble(&info, address + WORD_SIZE_THUMB * 2, disassembly, sizeof(disassembly));
printf("%04X: %s\n", instruction, disassembly);
}
}