diff options
| -rw-r--r-- | arch/mips/kernel/signal.c | 45 | ||||
| -rw-r--r-- | arch/mips/kernel/signal32.c | 43 | ||||
| -rw-r--r-- | arch/mips/math-emu/kernel_linkage.c | 75 |
3 files changed, 76 insertions, 87 deletions
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 5199563c4403..b7e4614d41b5 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -46,9 +46,6 @@ 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); - struct sigframe { u32 sf_ass[4]; /* argument save space for o32 */ u32 sf_pad[2]; /* Was: signal trampoline */ @@ -64,6 +61,40 @@ struct rt_sigframe { }; /* + * Thread saved context copy to/from a signal context presumed to be on the + * user stack, and therefore accessed with appropriate macros from uaccess.h. + */ +static int copy_fp_to_sigcontext(struct sigcontext __user *sc) +{ + int i; + int err = 0; + + for (i = 0; i < 32; i++) { + err |= + __put_user(get_fpr64(¤t->thread.fpu.fpr[i], 0), + &sc->sc_fpregs[i]); + } + err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); + + return err; +} + +static int copy_fp_from_sigcontext(struct sigcontext __user *sc) +{ + int i; + int err = 0; + u64 fpr_val; + + for (i = 0; i < 32; i++) { + err |= __get_user(fpr_val, &sc->sc_fpregs[i]); + set_fpr64(¤t->thread.fpu.fpr[i], 0, fpr_val); + } + err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); + + return err; +} + +/* * Helper routines */ static int protected_save_fp_context(struct sigcontext __user *sc) @@ -595,14 +626,14 @@ static int smp_save_fp_context(struct sigcontext __user *sc) { return raw_cpu_has_fpu ? _save_fp_context(sc) - : fpu_emulator_save_context(sc); + : copy_fp_to_sigcontext(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); + : copy_fp_from_sigcontext(sc); } #endif @@ -617,8 +648,8 @@ static int signal_setup(void) 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; + save_fp_context = copy_fp_from_sigcontext; + restore_fp_context = copy_fp_to_sigcontext; } #endif diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 3d60f7750fa8..dc09206d8c7b 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -42,9 +42,6 @@ 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 ... */ @@ -78,6 +75,42 @@ struct rt_sigframe32 { }; /* + * Thread saved context copy to/from a signal context presumed to be on the + * user stack, and therefore accessed with appropriate macros from uaccess.h. + */ +static int copy_fp_to_sigcontext32(struct sigcontext32 __user *sc) +{ + int i; + int err = 0; + int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; + + for (i = 0; i < 32; i += inc) { + err |= + __put_user(get_fpr64(¤t->thread.fpu.fpr[i], 0), + &sc->sc_fpregs[i]); + } + err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); + + return err; +} + +static int copy_fp_from_sigcontext32(struct sigcontext32 __user *sc) +{ + int i; + int err = 0; + int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; + u64 fpr_val; + + for (i = 0; i < 32; i += inc) { + err |= __get_user(fpr_val, &sc->sc_fpregs[i]); + set_fpr64(¤t->thread.fpu.fpr[i], 0, fpr_val); + } + err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); + + return err; +} + +/* * sigcontext handlers */ static int protected_save_fp_context32(struct sigcontext32 __user *sc) @@ -566,8 +599,8 @@ static int signal32_init(void) 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; + save_fp_context32 = copy_fp_to_sigcontext32; + restore_fp_context32 = copy_fp_from_sigcontext32; } return 0; diff --git a/arch/mips/math-emu/kernel_linkage.c b/arch/mips/math-emu/kernel_linkage.c index 9b46213b1035..eb58a85b3157 100644 --- a/arch/mips/math-emu/kernel_linkage.c +++ b/arch/mips/math-emu/kernel_linkage.c @@ -43,78 +43,3 @@ void fpu_emulator_init_fpu(void) for (i = 0; i < 32; i++) set_fpr64(¤t->thread.fpu.fpr[i], 0, SIGNALLING_NAN); } - - -/* - * Emulator context save/restore to/from a signal context - * presumed to be on the user stack, and therefore accessed - * with appropriate macros from uaccess.h - */ - -int fpu_emulator_save_context(struct sigcontext __user *sc) -{ - int i; - int err = 0; - - for (i = 0; i < 32; i++) { - err |= - __put_user(get_fpr64(¤t->thread.fpu.fpr[i], 0), - &sc->sc_fpregs[i]); - } - err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -int fpu_emulator_restore_context(struct sigcontext __user *sc) -{ - int i; - int err = 0; - u64 fpr_val; - - for (i = 0; i < 32; i++) { - err |= __get_user(fpr_val, &sc->sc_fpregs[i]); - set_fpr64(¤t->thread.fpu.fpr[i], 0, fpr_val); - } - err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -#ifdef CONFIG_64BIT -/* - * This is the o32 version - */ - -int fpu_emulator_save_context32(struct sigcontext32 __user *sc) -{ - int i; - int err = 0; - int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; - - for (i = 0; i < 32; i += inc) { - err |= - __put_user(get_fpr64(¤t->thread.fpu.fpr[i], 0), - &sc->sc_fpregs[i]); - } - err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -int fpu_emulator_restore_context32(struct sigcontext32 __user *sc) -{ - int i; - int err = 0; - int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; - u64 fpr_val; - - for (i = 0; i < 32; i += inc) { - err |= __get_user(fpr_val, &sc->sc_fpregs[i]); - set_fpr64(¤t->thread.fpu.fpr[i], 0, fpr_val); - } - err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} -#endif |