Disintegrate asm/system.h for Xtensa
Disintegrate asm/system.h for Xtensa.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index e64efac..bc1e14c 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -381,6 +381,25 @@
return sp;
}
+static inline void spill_registers(void)
+{
+ unsigned int a0, ps;
+
+ __asm__ __volatile__ (
+ "movi a14," __stringify (PS_EXCM_BIT) " | 1\n\t"
+ "mov a12, a0\n\t"
+ "rsr a13," __stringify(SAR) "\n\t"
+ "xsr a14," __stringify(PS) "\n\t"
+ "movi a0, _spill_registers\n\t"
+ "rsync\n\t"
+ "callx0 a0\n\t"
+ "mov a0, a12\n\t"
+ "wsr a13," __stringify(SAR) "\n\t"
+ "wsr a14," __stringify(PS) "\n\t"
+ :: "a" (&a0), "a" (&ps)
+ : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", "memory");
+}
+
void show_trace(struct task_struct *task, unsigned long *sp)
{
unsigned long a0, a1, pc;