diff options
| author |   Paul Mackerras <paulus@samba.org> | 2005-05-01 08:58:40 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 08:58:40 -0700 |
| commit | 443a848cd30eb5bb5c1038e6371d83404775dcfc (patch) | |
| tree | f61d62eebf19498395257a7cddee828c4edfa876 /arch/ppc/kernel/align.c | |
| parent | [PATCH] ppc32: Fix errata for some G3 CPUs (diff) | |
| download | linux-dev-443a848cd30eb5bb5c1038e6371d83404775dcfc.tar.xz linux-dev-443a848cd30eb5bb5c1038e6371d83404775dcfc.zip | |
[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 <jason.mcmullan@timesys.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc/kernel/align.c')
| -rw-r--r-- | arch/ppc/kernel/align.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/ppc/kernel/align.c b/arch/ppc/kernel/align.c index 79c929475037..40d356c66c41 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; } |