LowLevel/Luma3DS-3GX
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Exception register dumps are now displayed on screen, among other things

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This commit is contained in:
TuxSH
2016-05-06 22:50:01 +02:00
parent a63fb971d4
commit 17964f8cd1
2 changed files with 57 additions and 8 deletions
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59
source/exceptions.c
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@@ -20,8 +20,35 @@ void installArm9Handlers(void)
((void (*)())payloadAddress)();
}
static void hexItoa(u32 n, char* out)
{
static const char hexDigits[] = "0123456789ABCDEF";
int i = 0;
while(n > 0)
{
out[7-i++] = hexDigits[(int)(n & 0xf)];
n >>= 4;
}
for(; i < 8; ++i) out[7-i] = '0';
out[8] = '\x00';
}
void detectAndProcessExceptionDumps(void)
{
static const char* handledExceptionNames[] = {
"FIQ", "undefined instruction", "prefetch abort", "data abort"
};
static const char* registerNames[] = {
"R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "R8", "R9", "R10", "R11", "R12",
"SP", "LR", "PC", "CPSR"
};
char hexstring[] = "00000000";
vu32 *dump = (u32 *)0x25000000;
if(dump[0] == 0xDEADC0DE && dump[1] == 0xDEADCAFE && dump[3] == 9)
@@ -38,11 +65,33 @@ void detectAndProcessExceptionDumps(void)
initScreens();
drawString("An ARM9 exception occurred", 10, 10, COLOR_RED);
int posY = drawString("You can find a dump in the following file:", 10, 30, COLOR_WHITE);
posY = drawString(path, 10, posY + SPACING_Y, COLOR_WHITE);
drawString("Press any button to shutdown", 10, posY + 2 * SPACING_Y, COLOR_WHITE);
drawString("An exception occurred", 10, 10, COLOR_RED);
int posY = drawString("Processor: ARM9", 10, 30, COLOR_WHITE) + SPACING_Y;
posY = drawString("Exception type: ", 10, posY, COLOR_WHITE);
posY = drawString(handledExceptionNames[dump[4]], 10 + 16 * SPACING_X, posY, COLOR_WHITE);
posY += 3 * SPACING_Y;
for(u32 i = 0; i < 17; i += 2)
{
posY = drawString(registerNames[i], 10, posY, COLOR_WHITE);
hexItoa(dump[10 + i], hexstring);
posY = drawString(hexstring, 10 + 7 * SPACING_X, posY, COLOR_WHITE);
if(i != 16)
{
posY = drawString(registerNames[i + 1], 10 + 22 * SPACING_X, posY, COLOR_WHITE);
hexItoa(dump[10 + i + 1], hexstring);
posY = drawString(hexstring, 10 + 29 * SPACING_X, posY, COLOR_WHITE);
}
posY += SPACING_Y;
}
posY += 2 * SPACING_Y;
posY = drawString("You can find a dump in the following file:", 10, posY, COLOR_WHITE) + SPACING_Y;
posY = drawString(path, 10, posY, COLOR_WHITE) + 2 * SPACING_Y;
drawString("Press any button to shutdown", 10, posY, COLOR_WHITE);
waitInput();
i2cWriteRegister(I2C_DEV_MCU, 0x20, 1);