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arm9 exception handlers: add arm9 mem dumping feature

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This commit is contained in:
TuxSH 2020-11-22 00:00:12 +00:00
parent df62e1901e
commit 87fa35ccfd
3 changed files with 40 additions and 4 deletions
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31
arm9/source/arm9_exception_handlers.c
View File

@ -33,6 +33,16 @@
#define REG_DUMP_SIZE 4 * 17 #define REG_DUMP_SIZE 4 * 17
#define CODE_DUMP_SIZE 48 #define CODE_DUMP_SIZE 48
static inline void dumpArm9Memory(ExceptionDumpHeader *dumpHeader, u8 *buf)
{
// Check if n3ds extra arm9 mem is enabled (if it's possible to read CFG9_EXTMEMCNT9)
u8 extmemcnt9 = 0;
safecpy(&extmemcnt9, (const void *)0x10000200, 1);
u32 size = (extmemcnt9 & 1) ? 0x180000 : 0x100000;
dumpHeader->additionalDataSize += safecpy(buf, (const void *)0x08000000, size);
}
void __attribute__((noreturn)) arm9ExceptionHandlerMain(u32 *registerDump, u32 type) void __attribute__((noreturn)) arm9ExceptionHandlerMain(u32 *registerDump, u32 type)
{ {
ExceptionDumpHeader dumpHeader; ExceptionDumpHeader dumpHeader;
@ -42,7 +52,7 @@ void __attribute__((noreturn)) arm9ExceptionHandlerMain(u32 *registerDump, u32 t
dumpHeader.magic[0] = 0xDEADC0DE; dumpHeader.magic[0] = 0xDEADC0DE;
dumpHeader.magic[1] = 0xDEADCAFE; dumpHeader.magic[1] = 0xDEADCAFE;
dumpHeader.versionMajor = 1; dumpHeader.versionMajor = 1;
dumpHeader.versionMinor = 2; dumpHeader.versionMinor = 3;
dumpHeader.processor = 9; dumpHeader.processor = 9;
dumpHeader.core = 0; dumpHeader.core = 0;
@ -68,6 +78,25 @@ void __attribute__((noreturn)) arm9ExceptionHandlerMain(u32 *registerDump, u32 t
//Dump stack in place //Dump stack in place
dumpHeader.stackDumpSize = safecpy(final, (const void *)registerDump[13], 0x1000 - (registerDump[13] & 0xFFF)); dumpHeader.stackDumpSize = safecpy(final, (const void *)registerDump[13], 0x1000 - (registerDump[13] & 0xFFF));
final += dumpHeader.stackDumpSize;
// See if we need to copy Arm9 memory (check for bkpt 0xFFFD / bkpt 0xFD)
if(dumpHeader.codeDumpSize > 0)
{
if(cpsr & 0x20)
{
// Thumb
u16 instr;
safecpy(&instr, codeDump + dumpHeader.codeDumpSize - 2, 2);
if(instr == 0xBEFD) dumpArm9Memory(&dumpHeader, final);
}
else
{
u32 instr;
safecpy(&instr, codeDump + dumpHeader.codeDumpSize - 4, 4);
if(instr == 0xE12FFF7D) dumpArm9Memory(&dumpHeader, final);
}
}
dumpHeader.totalSize = sizeof(ExceptionDumpHeader) + dumpHeader.registerDumpSize + dumpHeader.codeDumpSize + dumpHeader.stackDumpSize + dumpHeader.additionalDataSize; dumpHeader.totalSize = sizeof(ExceptionDumpHeader) + dumpHeader.registerDumpSize + dumpHeader.codeDumpSize + dumpHeader.stackDumpSize + dumpHeader.additionalDataSize;

11
arm9/source/exceptions.c
View File

@ -129,8 +129,15 @@ void detectAndProcessExceptionDumps(void)
} }
if(dumpHeader->additionalDataSize != 0) if(dumpHeader->additionalDataSize != 0)
posY = drawFormattedString(true, 10, posY + SPACING_Y, COLOR_WHITE, {
"Current process: %.8s (%016llX)", (const char *)additionalData, *(vu64 *)(additionalData + 8)); u32 size = dumpHeader->additionalDataSize;
if(dumpHeader->processor == 11)
posY = drawFormattedString(true, 10, posY + SPACING_Y, COLOR_WHITE,
"Current process: %.8s (%016llX)", (const char *)additionalData, *(vu64 *)(additionalData + 8));
else
posY = drawFormattedString(true, 10, posY + SPACING_Y, COLOR_WHITE,
"Arm9 memory dump at offset %X size %lX", (uintptr_t)additionalData - (uintptr_t)dumpHeader, size);
}
posY += SPACING_Y; posY += SPACING_Y;
for(u32 i = 0; i < 17; i += 2) for(u32 i = 0; i < 17; i += 2)

2
k11_extension/source/fatalExceptionHandlersMain.c
View File

@ -81,7 +81,7 @@ void fatalExceptionHandlersMain(u32 *registerDump, u32 type, u32 cpuId)
dumpHeader.magic[0] = 0xDEADC0DE; dumpHeader.magic[0] = 0xDEADC0DE;
dumpHeader.magic[1] = 0xDEADCAFE; dumpHeader.magic[1] = 0xDEADCAFE;
dumpHeader.versionMajor = 1; dumpHeader.versionMajor = 1;
dumpHeader.versionMinor = 2; dumpHeader.versionMinor = 3;
dumpHeader.processor = 11; dumpHeader.processor = 11;
dumpHeader.core = cpuId & 0xF; dumpHeader.core = cpuId & 0xF;