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authorRalf Baechle <ralf@linux-mips.org>2009-11-24 19:35:41 +0000
committerRalf Baechle <ralf@linux-mips.org>2009-12-17 01:57:32 +0000
commit137f6f3e284e8215a940cf20dbf2aef449fe5a60 (patch)
treea8243dc24c2e00eb2d6b0c924b2dde3910912eb0 /arch/mips
parent69f3a7de1f1ec935924b1b13f83812f8b30e92ce (diff)
downloadblackbird-op-linux-137f6f3e284e8215a940cf20dbf2aef449fe5a60.tar.gz
blackbird-op-linux-137f6f3e284e8215a940cf20dbf2aef449fe5a60.zip
MIPS: Cleanup signal code initialization
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/709/
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/include/asm/fpu.h8
-rw-r--r--arch/mips/kernel/signal.c46
-rw-r--r--arch/mips/kernel/signal32.c24
-rw-r--r--arch/mips/kernel/traps.c76
4 files changed, 70 insertions, 84 deletions
diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h
index 8a3ef247659a..7fcef8ef3fab 100644
--- a/arch/mips/include/asm/fpu.h
+++ b/arch/mips/include/asm/fpu.h
@@ -28,15 +28,7 @@
struct sigcontext;
struct sigcontext32;
-extern asmlinkage int (*save_fp_context)(struct sigcontext __user *sc);
-extern asmlinkage int (*restore_fp_context)(struct sigcontext __user *sc);
-
-extern asmlinkage int (*save_fp_context32)(struct sigcontext32 __user *sc);
-extern asmlinkage int (*restore_fp_context32)(struct sigcontext32 __user *sc);
-
extern void fpu_emulator_init_fpu(void);
-extern int fpu_emulator_save_context(struct sigcontext __user *sc);
-extern int fpu_emulator_restore_context(struct sigcontext __user *sc);
extern void _init_fpu(void);
extern void _save_fp(struct task_struct *);
extern void _restore_fp(struct task_struct *);
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 6254041b942f..d0c68b5d717b 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -35,6 +35,15 @@
#include "signal-common.h"
+static int (*save_fp_context)(struct sigcontext __user *sc);
+static int (*restore_fp_context)(struct sigcontext __user *sc);
+
+extern asmlinkage int _save_fp_context(struct sigcontext __user *sc);
+extern asmlinkage int _restore_fp_context(struct sigcontext __user *sc);
+
+extern asmlinkage int fpu_emulator_save_context(struct sigcontext __user *sc);
+extern asmlinkage int fpu_emulator_restore_context(struct sigcontext __user *sc);
+
/*
* Horribly complicated - with the bloody RM9000 workarounds enabled
* the signal trampolines is moving to the end of the structure so we can
@@ -709,3 +718,40 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
key_replace_session_keyring();
}
}
+
+#ifdef CONFIG_SMP
+static int smp_save_fp_context(struct sigcontext __user *sc)
+{
+ return raw_cpu_has_fpu
+ ? _save_fp_context(sc)
+ : fpu_emulator_save_context(sc);
+}
+
+static int smp_restore_fp_context(struct sigcontext __user *sc)
+{
+ return raw_cpu_has_fpu
+ ? _restore_fp_context(sc)
+ : fpu_emulator_restore_context(sc);
+}
+#endif
+
+static int signal_setup(void)
+{
+#ifdef CONFIG_SMP
+ /* For now just do the cpu_has_fpu check when the functions are invoked */
+ save_fp_context = smp_save_fp_context;
+ restore_fp_context = smp_restore_fp_context;
+#else
+ if (cpu_has_fpu) {
+ save_fp_context = _save_fp_context;
+ restore_fp_context = _restore_fp_context;
+ } else {
+ save_fp_context = fpu_emulator_save_context;
+ restore_fp_context = fpu_emulator_restore_context;
+ }
+#endif
+
+ return 0;
+}
+
+arch_initcall(signal_setup);
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 2e74075ac0ca..03abaf048f09 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -35,6 +35,15 @@
#include "signal-common.h"
+static int (*save_fp_context32)(struct sigcontext32 __user *sc);
+static int (*restore_fp_context32)(struct sigcontext32 __user *sc);
+
+extern asmlinkage int _save_fp_context32(struct sigcontext32 __user *sc);
+extern asmlinkage int _restore_fp_context32(struct sigcontext32 __user *sc);
+
+extern asmlinkage int fpu_emulator_save_context32(struct sigcontext32 __user *sc);
+extern asmlinkage int fpu_emulator_restore_context32(struct sigcontext32 __user *sc);
+
/*
* Including <asm/unistd.h> would give use the 64-bit syscall numbers ...
*/
@@ -828,3 +837,18 @@ SYSCALL_DEFINE5(32_waitid, int, which, compat_pid_t, pid,
info.si_code |= __SI_CHLD;
return copy_siginfo_to_user32(uinfo, &info);
}
+
+static int signal32_init(void)
+{
+ if (cpu_has_fpu) {
+ save_fp_context32 = _save_fp_context32;
+ restore_fp_context32 = _restore_fp_context32;
+ } else {
+ save_fp_context32 = fpu_emulator_save_context32;
+ restore_fp_context32 = fpu_emulator_restore_context32;
+ }
+
+ return 0;
+}
+
+arch_initcall(signal32_init);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 9fe21fb65305..308e43460864 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1395,77 +1395,6 @@ void *set_vi_handler(int n, vi_handler_t addr)
return set_vi_srs_handler(n, addr, 0);
}
-/*
- * This is used by native signal handling
- */
-asmlinkage int (*save_fp_context)(struct sigcontext __user *sc);
-asmlinkage int (*restore_fp_context)(struct sigcontext __user *sc);
-
-extern asmlinkage int _save_fp_context(struct sigcontext __user *sc);
-extern asmlinkage int _restore_fp_context(struct sigcontext __user *sc);
-
-extern asmlinkage int fpu_emulator_save_context(struct sigcontext __user *sc);
-extern asmlinkage int fpu_emulator_restore_context(struct sigcontext __user *sc);
-
-#ifdef CONFIG_SMP
-static int smp_save_fp_context(struct sigcontext __user *sc)
-{
- return raw_cpu_has_fpu
- ? _save_fp_context(sc)
- : fpu_emulator_save_context(sc);
-}
-
-static int smp_restore_fp_context(struct sigcontext __user *sc)
-{
- return raw_cpu_has_fpu
- ? _restore_fp_context(sc)
- : fpu_emulator_restore_context(sc);
-}
-#endif
-
-static inline void signal_init(void)
-{
-#ifdef CONFIG_SMP
- /* For now just do the cpu_has_fpu check when the functions are invoked */
- save_fp_context = smp_save_fp_context;
- restore_fp_context = smp_restore_fp_context;
-#else
- if (cpu_has_fpu) {
- save_fp_context = _save_fp_context;
- restore_fp_context = _restore_fp_context;
- } else {
- save_fp_context = fpu_emulator_save_context;
- restore_fp_context = fpu_emulator_restore_context;
- }
-#endif
-}
-
-#ifdef CONFIG_MIPS32_COMPAT
-
-/*
- * This is used by 32-bit signal stuff on the 64-bit kernel
- */
-asmlinkage int (*save_fp_context32)(struct sigcontext32 __user *sc);
-asmlinkage int (*restore_fp_context32)(struct sigcontext32 __user *sc);
-
-extern asmlinkage int _save_fp_context32(struct sigcontext32 __user *sc);
-extern asmlinkage int _restore_fp_context32(struct sigcontext32 __user *sc);
-
-extern asmlinkage int fpu_emulator_save_context32(struct sigcontext32 __user *sc);
-extern asmlinkage int fpu_emulator_restore_context32(struct sigcontext32 __user *sc);
-
-static inline void signal32_init(void)
-{
- if (cpu_has_fpu) {
- save_fp_context32 = _save_fp_context32;
- restore_fp_context32 = _restore_fp_context32;
- } else {
- save_fp_context32 = fpu_emulator_save_context32;
- restore_fp_context32 = fpu_emulator_restore_context32;
- }
-}
-#endif
-
extern void cpu_cache_init(void);
extern void tlb_init(void);
extern void flush_tlb_handlers(void);
@@ -1779,11 +1708,6 @@ void __init trap_init(void)
else
memcpy((void *)(ebase + 0x080), &except_vec3_generic, 0x80);
- signal_init();
-#ifdef CONFIG_MIPS32_COMPAT
- signal32_init();
-#endif
-
local_flush_icache_range(ebase, ebase + 0x400);
flush_tlb_handlers();
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