commit 443a848cd30eb5bb5c1038e6371d83404775dcfc
author Paul Mackerras <paulus@samba.org> Sun May 01 08:58:40 2005 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> Sun May 01 08:58:40 2005 -0700
tree f61d62eebf19498395257a7cddee828c4edfa876
parent f1c55dea0bb2df94aa2b01b0871cb02f2e206676

[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>

arch/ppc/kernel/align.c

diff --git a/arch/ppc/kernel/align.c b/arch/ppc/kernel/align.c
index 79c9294..40d356c 100644
--- a/arch/ppc/kernel/align.c
+++ b/arch/ppc/kernel/align.c
@@ -368,16 +368,24 @@
 
 	/* 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, &current->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, &current->thread.fpscr);
 		preempt_enable();
+#else
+		return 0;
+#endif
 		break;
 	}