synchronize with external depot
-add relocation code to initial asm setup
-print the top of the stack on a crash
-turn off debug spew when threads exit
-make sure the critical section routines are fully inlined
-remove warning in dpc code
diff --git a/arch/arm/faults.c b/arch/arm/faults.c
index c16aff0..487db1f 100644
--- a/arch/arm/faults.c
+++ b/arch/arm/faults.c
@@ -40,14 +40,31 @@
dprintf("%c%s r13 0x%08x r14 0x%08x\n", ((frame->spsr & MODE_MASK) == MODE_SVC) ? '*' : ' ', "svc", regs.svc_r13, regs.svc_r14);
dprintf("%c%s r13 0x%08x r14 0x%08x\n", ((frame->spsr & MODE_MASK) == MODE_UND) ? '*' : ' ', "und", regs.und_r13, regs.und_r14);
dprintf("%c%s r13 0x%08x r14 0x%08x\n", ((frame->spsr & MODE_MASK) == MODE_SYS) ? '*' : ' ', "sys", regs.sys_r13, regs.sys_r14);
+
+ // dump the bottom of the current stack
+ addr_t stack;
+ switch (frame->spsr & MODE_MASK) {
+ case MODE_FIQ: stack = regs.fiq_r13; break;
+ case MODE_IRQ: stack = regs.irq_r13; break;
+ case MODE_SVC: stack = regs.svc_r13; break;
+ case MODE_UND: stack = regs.und_r13; break;
+ case MODE_SYS: stack = regs.sys_r13; break;
+ default:
+ stack = 0;
+ }
+
+ if (stack != 0) {
+ dprintf("bottom of stack at 0x%08x:\n", (unsigned int)stack);
+ hexdump((void *)stack, 128);
+ }
}
static void exception_die(struct arm_fault_frame *frame, int pc_off, const char *msg)
{
inc_critical_section();
frame->pc += pc_off;
- dump_fault_frame(frame);
dprintf(msg);
+ dump_fault_frame(frame);
debug_halt();
for(;;);
}