After a memory fault caused by a kgdb access (in kgdb_mem2hex for
example) the kgdb_fault_setjmp/longjmp routines are used to recover from
the fault. On ARM, when kgdb_fault_longjmp restores the state, it does
not properly restore the CPSR saved by kgdb_fault_setjmp before the
fault. Here's a patch to properly restore CPSR.
The patch below is from 2.6.10, but this code hasn't changed since 2.4
so should apply to any kernel.
Kevin
Index: linux-2.6.10/arch/arm/kernel/kgdb-jmp.S
===================================================================
--- linux-2.6.10.orig/arch/arm/kernel/kgdb-jmp.S
+++ linux-2.6.10/arch/arm/kernel/kgdb-jmp.S
@@ -27,4 +27,6 @@ ENTRY (kgdb_fault_longjmp)
/* Restore registers */
mov r1,#1
str r1,[r0]
+ ldr r1,[r0, #64]
+ msr spsr,r1
ldmia r0,{r0-pc}^
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