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whb: Exception handler now works

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* The context structure for the crash handler thread needs to be aligned
to at least 8 bytes.
* In my cases, the entry at the bottom of my stack always has a
back-chain value of 0x1. Of course, this address is not likely to be
part of the stack, so this should be considered to be the end of the
stack.
* During ISI exceptions, only a stack trace is printed, and during DSI,
disassembly and stack information is printed. For some unknown reason, I
never see register dumps.
This commit is contained in:
CreeperMario 2018-01-11 18:21:06 +10:30
parent d0f43d24b7
commit eb1a610f92
1 changed files with 2 additions and 2 deletions
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4
src/libwhb/src/crash.c
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@ -40,7 +40,7 @@ sRegistersLength = 0;
static uint8_t static uint8_t
sCrashThreadStack[THREAD_STACK_SIZE]; sCrashThreadStack[THREAD_STACK_SIZE];
static OSThread static OSThread __attribute__((aligned(8)))
sCrashThread; sCrashThread;
static int static int
@ -96,7 +96,7 @@ getStackTrace(OSContext *context)
for (i = 0; i < 16; ++i) { for (i = 0; i < 16; ++i) {
uint32_t addr; uint32_t addr;
if (!stackPtr || (uintptr_t)stackPtr == 0xFFFFFFFF) { if (!stackPtr || (uintptr_t)stackPtr == 0x1 || (uintptr_t)stackPtr == 0xFFFFFFFF) {
break; break;
} }