diff options
author | Paul Burton <paul.burton@imgtec.com> | 2014-01-27 15:23:02 +0000 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:09 +0100 |
commit | b2ead528288545859dbd7004e07bc23204cf92a8 (patch) | |
tree | d01478041879e4d01aef8e1b544575428000caa5 /arch/mips/math-emu | |
parent | e87ce9482287c396c0804e4ec3a3fc63b1ff7ac0 (diff) | |
download | op-kernel-dev-b2ead528288545859dbd7004e07bc23204cf92a8.zip op-kernel-dev-b2ead528288545859dbd7004e07bc23204cf92a8.tar.gz |
MIPS: Move & rename fpu_emulator_{save,restore}_context
These functions aren't directly related to the FPU emulator at all, they
simply copy between a thread's saved context & a sigcontext. Thus move
them to the appropriate signal files & rename them accordingly. This
makes it clearer that the functions don't require the FPU emulator in
any way.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6422/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu')
-rw-r--r-- | arch/mips/math-emu/kernel_linkage.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/arch/mips/math-emu/kernel_linkage.c b/arch/mips/math-emu/kernel_linkage.c index 9b46213..eb58a85 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 |