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Disintegrate asm/system.h for Xtensa

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Disintegrate asm/system.h for Xtensa.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Chris Zankel <chris@zankel.net>
This commit is contained in:
David Howells
2012-03-28 18:30:03 +01:00
parent 8978bfd228
commit f9aa7e1882
15 changed files with 225 additions and 191 deletions
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19
arch/xtensa/kernel/traps.c
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@@ -381,6 +381,25 @@ static __always_inline unsigned long *stack_pointer(struct task_struct *task)
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;