LowLevel/Luma3DS-3GX
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Fix the arm11 exception handlers on < 7.x

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This commit is contained in:
TuxSH 2016-09-30 22:46:48 +02:00
parent 5f93724845
commit bd6c7b7fdb
2 changed files with 8 additions and 9 deletions
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2
exceptions/arm11/Makefile
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@ -18,7 +18,7 @@ dir_build := build
dir_out := ../../$(dir_build)
ASFLAGS := -mcpu=mpcore -mfpu=vfp
CFLAGS := -Wall -Wextra -MMD -MP -mthumb -mthumb-interwork $(ASFLAGS) -fno-builtin -std=c11 -Wno-main -O2 -flto -ffast-math
CFLAGS := -Wall -Wextra -MMD -MP -mthumb -mthumb-interwork $(ASFLAGS) -fno-builtin -std=c11 -Wno-main -Os -flto -ffast-math
LDFLAGS := -nostdlib
objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \

15
exceptions/arm11/source/mainHandler.c
View File

@ -22,8 +22,6 @@
#include "handlers.h"
#define FINAL_BUFFER 0xE5000000 //0x25000000
#define REG_DUMP_SIZE 4 * 23
#define CODE_DUMP_SIZE 48
@ -49,7 +47,8 @@ void __attribute__((noreturn)) mainHandler(u32 *regs, u32 type, u32 cpuId)
u32 registerDump[REG_DUMP_SIZE / 4];
u8 codeDump[CODE_DUMP_SIZE];
u8 *final = (u8 *)FINAL_BUFFER;
u8 *const finalBuffer = cannotAccessVA((const void *)0xE5000000) ? (u8 *)0xF5000000 : (u8 *)0xE5000000; //VA for 0x25000000
u8 *final = finalBuffer;
while(*(vu32 *)final == 0xDEADC0DE && *((vu32 *)final + 1) == 0xDEADCAFE);
@ -80,8 +79,8 @@ void __attribute__((noreturn)) mainHandler(u32 *regs, u32 type, u32 cpuId)
u8 *instr = (u8 *)pc + ((cpsr & 0x20) ? 2 : 4) - dumpHeader.codeDumpSize; //Doesn't work well on 32-bit Thumb instructions, but it isn't much of a problem
dumpHeader.codeDumpSize = copyMemory(codeDump, instr, dumpHeader.codeDumpSize, ((cpsr & 0x20) != 0) ? 2 : 4);
//Copy register dump and code dump
final = (u8 *)(FINAL_BUFFER + sizeof(ExceptionDumpHeader));
//Copy register dump and code dump
final = (u8 *)(finalBuffer + sizeof(ExceptionDumpHeader));
final += copyMemory(final, registerDump, dumpHeader.registerDumpSize, 1);
final += copyMemory(final, codeDump, dumpHeader.codeDumpSize, 1);
@ -95,7 +94,7 @@ void __attribute__((noreturn)) mainHandler(u32 *regs, u32 type, u32 cpuId)
dumpHeader.additionalDataSize = 16;
vu8 *currentKCodeSet = *(vu8 **)(*(vu8 **)0xFFFF9004 + CODESET_OFFSET); //currentKProcess + CodeSet
additionalData[0] = *(vu64 *)(currentKCodeSet + 0x50); //Process name
additionalData[0] = *(vu64 *)(currentKCodeSet + 0x50); //Process name
additionalData[1] = *(vu64 *)(currentKCodeSet + 0x5C); //Title ID
}
else dumpHeader.additionalDataSize = 0;
@ -103,8 +102,8 @@ void __attribute__((noreturn)) mainHandler(u32 *regs, u32 type, u32 cpuId)
dumpHeader.totalSize = sizeof(ExceptionDumpHeader) + dumpHeader.registerDumpSize + dumpHeader.codeDumpSize + dumpHeader.stackDumpSize + dumpHeader.additionalDataSize;
//Copy header (actually optimized by the compiler)
*(ExceptionDumpHeader *)FINAL_BUFFER = dumpHeader;
*(ExceptionDumpHeader *)finalBuffer = dumpHeader;
cleanInvalidateDCacheAndDMB();
mcuReboot(); //Also contains DCache-cleaning code
}
}