[MIPS] signal: clean up sigframe structure

This patch makes 'struct sigframe' declaration avalaible for all signals
code. It allows signal32 to not have its own declaration.

This patch also removes all ICACHE_REFILLS_WORKAROUND_WAR tests in
structure declaration and hopefully make them more readable.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h
index 03d2b603fb84..6700bde06053 100644
--- a/arch/mips/kernel/signal-common.h
+++ b/arch/mips/kernel/signal-common.h
@@ -12,6 +12,32 @@
 #define __SIGNAL_COMMON_H
 
 /*
+ * Horribly complicated - with the bloody RM9000 workarounds enabled
+ * the signal trampolines is moving to the end of the structure so we can
+ * increase the alignment without breaking software compatibility.
+ */
+#if ICACHE_REFILLS_WORKAROUND_WAR == 0
+
+struct sigframe {
+        u32 sf_ass[4];          /* argument save space for o32 */
+        u32 sf_code[2];         /* signal trampoline */
+        struct sigcontext sf_sc;
+        sigset_t sf_mask;
+};
+
+#else  /* ICACHE_REFILLS_WORKAROUND_WAR */
+
+struct sigframe {
+        u32 sf_ass[4];                  /* argument save space for o32 */
+        u32 sf_pad[2];
+        struct sigcontext sf_sc;        /* hw context */
+        sigset_t sf_mask;
+        u32 sf_code[8] ____cacheline_aligned;   /* signal trampoline */
+};
+
+#endif  /* !ICACHE_REFILLS_WORKAROUND_WAR */
+
+/*
  * handle hardware context
  */
 extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);