std::string DSPDebugInterface::GetRawMemoryString(int memory, unsigned int address)
{
if (DSPCore_GetState() == State::Stopped)
return "";
switch (memory)
{
case 0: // IMEM
switch (address >> 12)
{
case 0:
case 0x8:
return StringFromFormat("%04x", dsp_imem_read(address));
default:
return "--IMEM--";
}
case 1: // DMEM
switch (address >> 12)
{
case 0:
case 1:
return StringFromFormat("%04x (DMEM)", dsp_dmem_read(address));
case 0xf:
return StringFromFormat("%04x (MMIO)", g_dsp.ifx_regs[address & 0xFF]);
default:
return "--DMEM--";
}
}
return "";
}
void DSPDebugInterface::GetRawMemoryString(int memory, unsigned int address, char *dest, int max_size)
{
if (DSPCore_GetState() == DSPCORE_STOP)
{
dest[0] = 0;
return;
}
switch (memory)
{
case 0: // IMEM
switch (address >> 12)
{
case 0:
case 0x8:
sprintf(dest, "%04x", dsp_imem_read(address));
break;
default:
sprintf(dest, "--IMEM--");
break;
}
break;
case 1: // DMEM
switch (address >> 12)
{
case 0:
case 1:
sprintf(dest, "%04x (DMEM)", dsp_dmem_read(address));
break;
case 0xf:
sprintf(dest, "%04x (MMIO)", g_dsp.ifx_regs[address & 0xFF]);
break;
default:
sprintf(dest, "--DMEM--");
break;
}
break;
}
}
static void AnalyzeRange(int start_addr, int end_addr)
{
// First we run an extremely simplified version of a disassembler to find
// where all instructions start.
// This may not be 100% accurate in case of jump tables!
// It could get desynced, which would be bad. We'll see if that's an issue.
u16 last_arithmetic = 0;
for (int addr = start_addr; addr < end_addr;)
{
UDSPInstruction inst = dsp_imem_read(addr);
const DSPOPCTemplate *opcode = GetOpTemplate(inst);
if (!opcode)
{
addr++;
continue;
}
code_flags[addr] |= CODE_START_OF_INST;
// Look for loops.
if ((inst & 0xffe0) == 0x0060 || (inst & 0xff00) == 0x1100)
{
// BLOOP, BLOOPI
u16 loop_end = dsp_imem_read(addr + 1);
code_flags[addr] |= CODE_LOOP_START;
code_flags[loop_end] |= CODE_LOOP_END;
}
else if ((inst & 0xffe0) == 0x0040 || (inst & 0xff00) == 0x1000)
{
// LOOP, LOOPI
code_flags[addr] |= CODE_LOOP_START;
code_flags[addr + 1] |= CODE_LOOP_END;
}
// Mark the last arithmetic/multiplier instruction before a branch.
// We must update the SR reg at these instructions
if (opcode->updates_sr)
{
last_arithmetic = addr;
}
if (opcode->branch && !opcode->uncond_branch)
{
code_flags[last_arithmetic] |= CODE_UPDATE_SR;
}
// If an instruction potentially raises exceptions, mark the following
// instruction as needing to check for exceptions
if (opcode->opcode == 0x00c0 ||
opcode->opcode == 0x1800 ||
opcode->opcode == 0x1880 ||
opcode->opcode == 0x1900 ||
opcode->opcode == 0x1980 ||
opcode->opcode == 0x2000 ||
opcode->extended
)
code_flags[addr + opcode->size] |= CODE_CHECK_INT;
addr += opcode->size;
}
// Next, we'll scan for potential idle skips.
for (int s = 0; s < NUM_IDLE_SIGS; s++)
{
for (int addr = start_addr; addr < end_addr; addr++)
{
bool found = false;
for (int i = 0; i < MAX_IDLE_SIG_SIZE + 1; i++)
{
if (idle_skip_sigs[s][i] == 0)
found = true;
if (idle_skip_sigs[s][i] == 0xFFFF)
continue;
if (idle_skip_sigs[s][i] != dsp_imem_read(addr + i))
break;
}
if (found)
{
INFO_LOG(DSPLLE, "Idle skip location found at %02x (sigNum:%d)", addr, s+1);
code_flags[addr] |= CODE_IDLE_SKIP;
}
}
}
INFO_LOG(DSPLLE, "Finished analysis.");
}
