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>

diff --git a/arch/x86/kernel/sigframe.h b/arch/x86/kernel/sigframe.h
index 6dd7e2b..6718ed0 100644 (file)
--- 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 */