diff options
Diffstat (limited to 'arch/x86/include/asm/fpu/internal.h')
-rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index b68f9940489f..7722aadc3278 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -60,107 +60,6 @@ extern void fpstate_init_soft(struct swregs_state *soft); static inline void fpstate_init_soft(struct swregs_state *soft) {} #endif -/* - * Returns 0 on success or the trap number when the operation raises an - * exception. - */ -#define user_insn(insn, output, input...) \ -({ \ - int err; \ - \ - might_fault(); \ - \ - asm volatile(ASM_STAC "\n" \ - "1: " #insn "\n" \ - "2: " ASM_CLAC "\n" \ - _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_MCE_SAFE) \ - : [err] "=a" (err), output \ - : "0"(0), input); \ - err; \ -}) - -#define kernel_insn_err(insn, output, input...) \ -({ \ - int err; \ - asm volatile("1:" #insn "\n\t" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: movl $-1,%[err]\n" \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE(1b, 3b) \ - : [err] "=r" (err), output \ - : "0"(0), input); \ - err; \ -}) - -#define kernel_insn(insn, output, input...) \ - asm volatile("1:" #insn "\n\t" \ - "2:\n" \ - _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FPU_RESTORE) \ - : output : input) - -static inline int fnsave_to_user_sigframe(struct fregs_state __user *fx) -{ - return user_insn(fnsave %[fx]; fwait, [fx] "=m" (*fx), "m" (*fx)); -} - -static inline int fxsave_to_user_sigframe(struct fxregs_state __user *fx) -{ - if (IS_ENABLED(CONFIG_X86_32)) - return user_insn(fxsave %[fx], [fx] "=m" (*fx), "m" (*fx)); - else - return user_insn(fxsaveq %[fx], [fx] "=m" (*fx), "m" (*fx)); - -} - -static inline void fxrstor(struct fxregs_state *fx) -{ - if (IS_ENABLED(CONFIG_X86_32)) - kernel_insn(fxrstor %[fx], "=m" (*fx), [fx] "m" (*fx)); - else - kernel_insn(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline int fxrstor_safe(struct fxregs_state *fx) -{ - if (IS_ENABLED(CONFIG_X86_32)) - return kernel_insn_err(fxrstor %[fx], "=m" (*fx), [fx] "m" (*fx)); - else - return kernel_insn_err(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline int fxrstor_from_user_sigframe(struct fxregs_state __user *fx) -{ - if (IS_ENABLED(CONFIG_X86_32)) - return user_insn(fxrstor %[fx], "=m" (*fx), [fx] "m" (*fx)); - else - return user_insn(fxrstorq %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline void frstor(struct fregs_state *fx) -{ - kernel_insn(frstor %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline int frstor_safe(struct fregs_state *fx) -{ - return kernel_insn_err(frstor %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline int frstor_from_user_sigframe(struct fregs_state __user *fx) -{ - return user_insn(frstor %[fx], "=m" (*fx), [fx] "m" (*fx)); -} - -static inline void fxsave(struct fxregs_state *fx) -{ - if (IS_ENABLED(CONFIG_X86_32)) - asm volatile( "fxsave %[fx]" : [fx] "=m" (*fx)); - else - asm volatile("fxsaveq %[fx]" : [fx] "=m" (*fx)); -} - extern void restore_fpregs_from_fpstate(union fpregs_state *fpstate, u64 mask); extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size); |