x86: signal: move sigframe.h to arch/x86/include/asm

Impact: cleanup, move header file

Move arch/x86/kernel/sigframe.h to arch/x86/include/asm/sigframe.h.
It will be used in arch/x86/ia32/ia32_signal.c.

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

1 files changed, 43 insertions, 0 deletions

diff --git a/arch/x86/include/asm/sigframe.h b/arch/x86/include/asm/sigframe.h
new file mode 100644
index 000000000000..6718ed04b05b
--- /dev/null
+++ b/arch/x86/include/asm/sigframe.h
@@ -0,0 +1,43 @@
+#ifdef CONFIG_X86_32
+#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_ia32 sc;
+        /*
+         * fpstate is unused. fpstate is moved/allocated after
+         * retcode[] below. This movement allows to have the FP state and the
+         * future state extensions (xsave) stay together.
+         * And at the same time retaining the unused fpstate, prevents changing
+         * the offset of extramask[] in the sigframe and thus prevent any
+         * legacy application accessing/modifying it.
+         */
+        struct _fpstate_ia32 fpstate_unused;
+        unsigned long extramask[_NSIG_WORDS-1];
+        char retcode[8];
+        /* fp state follows here */
+};
+
+struct rt_sigframe_ia32 {
+        u32 pretcode;
+        int sig;
+        u32 pinfo;
+        u32 puc;
+        struct siginfo info;
+        struct ucontext_ia32 uc;
+        char retcode[8];
+        /* fp state follows here */
+};
+#else /* !CONFIG_X86_32 */
+struct rt_sigframe {
+        char __user *pretcode;
+        struct ucontext uc;
+        struct siginfo info;
+        /* fp state follows here */
+};
+#endif /* CONFIG_X86_32 */