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Misc exception handlers fixes

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Biggest one is they actually work now
This commit is contained in:
Wolfvak 2017-08-16 19:43:08 -03:00
parent 06318455c1
commit cfa26c2a2d
8 changed files with 38 additions and 39 deletions
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4
Makefile
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@ -21,9 +21,9 @@ ifeq ($(SAFEMODE),1)
export TARGET := SafeMode9
endif
BUILD := build
SOURCES := source source/common source/filesys source/crypto source/fatfs source/nand source/virtual source/game source/gamecart source/quicklz
SOURCES := source source/common source/filesys source/crypto source/fatfs source/nand source/virtual source/game source/gamecart source/quicklz source/system
DATA := data
INCLUDES := common source source/common source/font source/filesys source/crypto source/fatfs source/nand source/virtual source/game source/gamecart source/quicklz
INCLUDES := common source source/common source/font source/filesys source/crypto source/fatfs source/nand source/virtual source/game source/gamecart source/quicklz source/system
#---------------------------------------------------------------------------------
# options for code generation

4
source/start.s
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@ -9,7 +9,7 @@
.global _start
_start:
@ Switch to supervisor mode and disable interrupts
msr cpsr_c, #(SR_SVC_MODE | SR_IRQ | SR_FIQ)
msr cpsr_c, #(SR_SYS_MODE | SR_IRQ | SR_FIQ)
@ Short delay (not always necessary, just in case)
mov r3, #0x40000
@ -136,7 +136,7 @@ _start_gm:
bl main
__mpu_regions:
.word 0xFFFF001F @ ffff0000 64k | bootrom (unprotected / protected)
.word 0xFFFF001F @ FFFF0000 64k | bootrom (unprotected / protected)
.word 0x3000801B @ 30008000 16k | dtcm
.word 0x00000035 @ 00000000 128M | itcm
.word 0x08000029 @ 08000000 2M | arm9 mem (O3DS / N3DS)

0
source/common/bootfirm.h → source/system/bootfirm.h
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0
source/common/bootfirm.s → source/system/bootfirm.s
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0
source/common/cache.h → source/system/cache.h
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0
source/common/cache.s → source/system/cache.s
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51
source/common/xrq.c → source/system/xrq.c
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@ -10,8 +10,8 @@
#include <arm.h>
/* Code will be dumped from PC-PC_DUMPRAD to PC+PC_DUMPRAD */
#define PC_DUMPRAD (0x20)
#define PC_DUMPRAD (0x30)
#define SP_DUMPLEN (0x60)
#define XRQ_DUMPDATAFUNC(type, size) \
int XRQ_DumpData_##type(char *b, u32 s, u32 e) \
@ -33,10 +33,9 @@ XRQ_DUMPDATAFUNC(u16, 4)
XRQ_DUMPDATAFUNC(u32, 8)
// Last 3 should never happen
const char *XRQ_Name[] = {
"Reset", "Undefined", "SWI", "Prefetch Abort",
"Data Abort", "", "", ""
"Data Abort", "Reserved", "IRQ", "FIQ"
};
extern char __stack_top;
@ -45,43 +44,44 @@ void XRQ_DumpRegisters(u32 xrq, u32 *regs)
{
int y;
u32 sp, st, pc;
char *wstr = (char*)TEMP_BUFFER, *dumpstr = wstr;
char dumpstr[2048], *wstr = dumpstr;
ClearScreen(MAIN_SCREEN, COLOR_BLACK);
wstr += sprintf(wstr, "Exception: %s (%lu)\n", XRQ_Name[xrq&7], xrq);
/* Print registers on screen */
wstr += sprintf(wstr, "Exception: %s (%lu)\n", XRQ_Name[xrq&7], xrq);
for (int i = 0; i < 8; i++) {
int i_ = i*2;
wstr += sprintf(wstr,
"R%02d: %08lX | R%02d: %08lX\n", i_, regs[i_], i_+1, regs[i_+1]);
}
wstr += sprintf(wstr, "CPSR: %08lX\n", regs[16]);
DrawStringF(MAIN_SCREEN, 10, 0, COLOR_WHITE, COLOR_BLACK,
dumpstr);
DrawStringF(MAIN_SCREEN, 10, 0, COLOR_WHITE, COLOR_BLACK, dumpstr);
/* Reinitialize SD */
y = GetDrawStringHeight(dumpstr);
DrawStringF(MAIN_SCREEN, 10, y, COLOR_WHITE, COLOR_BLACK,
"Reinitializing SD subsystem...");
DrawString(MAIN_SCREEN, "Reinitializing SD subsystem...", 10, y,
COLOR_WHITE, COLOR_BLACK);
y+=FONT_HEIGHT_EXT;
while(!InitSDCardFS()) {
DeinitSDCardFS();
}
DrawStringF(MAIN_SCREEN, 10, y, COLOR_WHITE, COLOR_BLACK,
"Done");
DrawString(MAIN_SCREEN, "Done", 10, y, COLOR_WHITE, COLOR_BLACK);
y+=FONT_HEIGHT_EXT;
/* Dump STACK */
sp = regs[13] & ~0xF;
st = (u32)&__stack_top;
if (sp >= 0x20000000 && sp <= st) {
wstr += sprintf(wstr, "\nStack dump:\n\n");
wstr += XRQ_DumpData_u8(wstr, sp, st);
}
wstr += sprintf(wstr, "\nStack dump:\n\n");
wstr += XRQ_DumpData_u8(wstr, sp, min(sp+SP_DUMPLEN, st));
pc = regs[15];
/* Dump TEXT */
pc = regs[15] & ~0xF;
wstr += sprintf(wstr, "\nCode dump:\n\n");
if (regs[16] & SR_THUMB) {
wstr += XRQ_DumpData_u16(wstr, pc-PC_DUMPRAD, pc+PC_DUMPRAD);
@ -89,12 +89,15 @@ void XRQ_DumpRegisters(u32 xrq, u32 *regs)
wstr += XRQ_DumpData_u32(wstr, pc-PC_DUMPRAD, pc+PC_DUMPRAD);
}
DrawStringF(MAIN_SCREEN, 10, y, COLOR_WHITE, COLOR_BLACK,
"Dumping state to SD...");
/* Dump to SD */
DrawString(MAIN_SCREEN, "Dumping state to SD...", 10, y,
COLOR_WHITE, COLOR_BLACK);
y+=FONT_HEIGHT_EXT;
FileSetData(OUTPUT_PATH"/dump.txt", dumpstr, wstr - dumpstr, 0, true);
DrawStringF(MAIN_SCREEN, 10, y, COLOR_WHITE, COLOR_BLACK,
"Done");
FileSetData(OUTPUT_PATH"/exception_dump.txt", dumpstr, wstr - dumpstr, 0, true);
DrawString(MAIN_SCREEN, "Done", 10, y, COLOR_WHITE, COLOR_BLACK);
DeinitSDCardFS();
return;
}

18
source/common/xrq_handler.s → source/system/xrq_handler.s
View File

@ -32,7 +32,6 @@ XRQ_Registers:
.space (17*4)
XRQ_Reset:
msr cpsr_c, #(SR_ABT_MODE | SR_IRQ | SR_FIQ)
XRQ_FATAL 0
XRQ_Undefined:
@ -52,10 +51,6 @@ XRQ_MainHandler:
mrs r9, spsr
mov r8, lr
@ Disable interrupts
orr r0, r0, #(SR_IRQ | SR_FIQ)
msr cpsr, r0
@ Disable mpu / caches
ldr r4, =BRF_WB_INV_DCACHE
ldr r5, =BRF_INVALIDATE_ICACHE
@ -67,23 +62,23 @@ XRQ_MainHandler:
@ Retrieve banked registers
and r0, r9, #(SR_PMODE_MASK)
cmp r0, #(SR_USR_MODE)
orreq r0, r9, #(SR_SYS_MODE)
orreq r0, #(SR_SYS_MODE)
orr r0, #(SR_IRQ | SR_FIQ)
msr cpsr_c, r0 @ Switch to previous mode
msr cpsr_c, r0 @ Switch to previous mode
mov r0, sp
mov r1, lr
msr cpsr, r10 @ Return to abort
msr cpsr_c, r10 @ Return to abort
stmia sp!, {r0,r1,r8,r9}
ldr sp, =__stack_abt
ldr r2, =XRQ_DumpRegisters
ldr sp, =0x8000
ldr r2, =XRQ_DumpRegisters @ void XRQ_DumpRegisters(u32 xrq_id, u32 *regs)
adr r1, XRQ_Registers
mov r0, r11
blx r2
msr cpsr_c, #(SR_SVC_MODE | SR_IRQ | SR_FIQ)
msr cpsr, #(SR_SVC_MODE | SR_IRQ | SR_FIQ)
mov r0, #0
.LXRQ_WFI:
mcr p15, 0, r0, c7, c0, 4
@ -93,3 +88,4 @@ XRQ_MainHandler:
.global XRQ_End
XRQ_End:
.word 0