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/align.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/ppc/kernel/align.c') diff --git a/arch/ppc/kernel/align.c b/arch/ppc/kernel/align.c index 79c92947503..40d356c66c4 100644 --- a/arch/ppc/kernel/align.c +++ b/arch/ppc/kernel/align.c @@ -368,16 +368,24 @@ fix_alignment(struct pt_regs *regs) /* Single-precision FP load and store require conversions... */ case LD+F+S: +#ifdef CONFIG_PPC_FPU preempt_disable(); enable_kernel_fp(); cvt_fd(&data.f, &data.d, ¤t->thread.fpscr); preempt_enable(); +#else + return 0; +#endif break; case ST+F+S: +#ifdef CONFIG_PPC_FPU preempt_disable(); enable_kernel_fp(); cvt_df(&data.d, &data.f, ¤t->thread.fpscr); preempt_enable(); +#else + return 0; +#endif break; } -- cgit v1.2.3-70-g09d2