From 443a848cd30eb5bb5c1038e6371d83404775dcfc Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sun, 1 May 2005 08:58:40 -0700 Subject: [PATCH] ppc32: refactor FPU exception handling Moved common FPU exception handling code out of head.S so it can be used by several of the sub-architectures that might of a full PowerPC FPU. Also, uses new CONFIG_PPC_FPU define to fix alignment exception handling for floating point load/store instructions to only occur if we have a hardware FPU. Signed-off-by: Jason McMullan Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc/kernel/head_booke.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/ppc/kernel/head_booke.h') diff --git a/arch/ppc/kernel/head_booke.h b/arch/ppc/kernel/head_booke.h index 884dac916bc..f213d12eec0 100644 --- a/arch/ppc/kernel/head_booke.h +++ b/arch/ppc/kernel/head_booke.h @@ -337,4 +337,11 @@ label: addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_LITE(0x0900, timer_interrupt) +#define FP_UNAVAILABLE_EXCEPTION \ + START_EXCEPTION(FloatingPointUnavailable) \ + NORMAL_EXCEPTION_PROLOG; \ + bne load_up_fpu; /* if from user, just load it up */ \ + addi r3,r1,STACK_FRAME_OVERHEAD; \ + EXC_XFER_EE_LITE(0x800, KernelFP) + #endif /* __HEAD_BOOKE_H__ */ -- cgit v1.2.3