x86: signal: rename sigframe and rt_sigframe on 32-bit

Impact: cleanup, prepare to move sigframe.h

On 32-bit, rename struct sigrame to struct sigframe_ia32, struct rt_sigframe
to struct rt_sigframe_ia32 and several structures.

And add helper macros to access the above data in arch/x86/kernel/signal.c.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 17 insertions, 11 deletions

diff --git a/arch/x86/kernel/sigframe.h b/arch/x86/kernel/sigframe.h
index 6dd7e2b70a4b..6718ed04b05b 100644
--- a/arch/x86/kernel/sigframe.h
+++ b/arch/x86/kernel/sigframe.h
@@ -1,8 +1,14 @@
 #ifdef CONFIG_X86_32
-struct sigframe {
-        char __user *pretcode;
+#define sigframe_ia32           sigframe
+#define rt_sigframe_ia32        rt_sigframe
+#define sigcontext_ia32         sigcontext
+#define _fpstate_ia32           _fpstate
+#define ucontext_ia32           ucontext
+
+struct sigframe_ia32 {
+        u32 pretcode;
         int sig;
-        struct sigcontext sc;
+        struct sigcontext_ia32 sc;
         /*
          * fpstate is unused. fpstate is moved/allocated after
          * retcode[] below. This movement allows to have the FP state and the
@@ -11,27 +17,27 @@ struct sigframe {
          * the offset of extramask[] in the sigframe and thus prevent any
          * legacy application accessing/modifying it.
          */
-        struct _fpstate fpstate_unused;
+        struct _fpstate_ia32 fpstate_unused;
         unsigned long extramask[_NSIG_WORDS-1];
         char retcode[8];
         /* fp state follows here */
 };
 
-struct rt_sigframe {
-        char __user *pretcode;
+struct rt_sigframe_ia32 {
+        u32 pretcode;
         int sig;
-        struct siginfo __user *pinfo;
-        void __user *puc;
+        u32 pinfo;
+        u32 puc;
         struct siginfo info;
-        struct ucontext uc;
+        struct ucontext_ia32 uc;
         char retcode[8];
         /* fp state follows here */
 };
-#else
+#else /* !CONFIG_X86_32 */
 struct rt_sigframe {
         char __user *pretcode;
         struct ucontext uc;
         struct siginfo info;
         /* fp state follows here */
 };
-#endif
+#endif /* CONFIG_X86_32 */