45 static int (*save_fp_context)(void __user *sc);
46 static int (*restore_fp_context)(void __user *sc);
69 static int copy_fp_to_sigcontext(void __user *sc)  in copy_fp_to_sigcontext()  argument
72 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in copy_fp_to_sigcontext()
73 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in copy_fp_to_sigcontext()
88 static int copy_fp_from_sigcontext(void __user *sc)  in copy_fp_from_sigcontext()  argument
91 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in copy_fp_from_sigcontext()
92 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in copy_fp_from_sigcontext()
110 static int save_hw_fp_context(void __user *sc)  in save_hw_fp_context()  argument
113 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in save_hw_fp_context()
114 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in save_hw_fp_context()
119 static int restore_hw_fp_context(void __user *sc)  in restore_hw_fp_context()  argument
122 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in restore_hw_fp_context()
123 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in restore_hw_fp_context()
132 static inline void __user *sc_to_extcontext(void __user *sc)  in sc_to_extcontext()  argument
141 	uc = container_of(sc, struct ucontext, uc_mcontext);  in sc_to_extcontext()
296 int protected_save_fp_context(void __user *sc)  in protected_save_fp_context()  argument
299 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in protected_save_fp_context()
300 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in protected_save_fp_context()
301 	uint32_t __user *used_math = sc + abi->off_sc_used_math;  in protected_save_fp_context()
324 			err = save_fp_context(sc);  in protected_save_fp_context()
328 			err = copy_fp_to_sigcontext(sc);  in protected_save_fp_context()
341 	ext_sz = err = save_extcontext(sc_to_extcontext(sc));  in protected_save_fp_context()
349 int protected_restore_fp_context(void __user *sc)  in protected_restore_fp_context()  argument
352 	uint64_t __user *fpregs = sc + abi->off_sc_fpregs;  in protected_restore_fp_context()
353 	uint32_t __user *csr = sc + abi->off_sc_fpc_csr;  in protected_restore_fp_context()
354 	uint32_t __user *used_math = sc + abi->off_sc_used_math;  in protected_restore_fp_context()
387 			err = restore_fp_context(sc);  in protected_restore_fp_context()
391 			err = copy_fp_from_sigcontext(sc);  in protected_restore_fp_context()
405 		err = restore_extcontext(sc_to_extcontext(sc));  in protected_restore_fp_context()
410 int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in setup_sigcontext()  argument
415 	err |= __put_user(regs->cp0_epc, &sc->sc_pc);  in setup_sigcontext()
417 	err |= __put_user(0, &sc->sc_regs[0]);  in setup_sigcontext()
419 		err |= __put_user(regs->regs[i], &sc->sc_regs[i]);  in setup_sigcontext()
422 	err |= __put_user(regs->acx, &sc->sc_acx);  in setup_sigcontext()
424 	err |= __put_user(regs->hi, &sc->sc_mdhi);  in setup_sigcontext()
425 	err |= __put_user(regs->lo, &sc->sc_mdlo);  in setup_sigcontext()
427 		err |= __put_user(mfhi1(), &sc->sc_hi1);  in setup_sigcontext()
428 		err |= __put_user(mflo1(), &sc->sc_lo1);  in setup_sigcontext()
429 		err |= __put_user(mfhi2(), &sc->sc_hi2);  in setup_sigcontext()
430 		err |= __put_user(mflo2(), &sc->sc_lo2);  in setup_sigcontext()
431 		err |= __put_user(mfhi3(), &sc->sc_hi3);  in setup_sigcontext()
432 		err |= __put_user(mflo3(), &sc->sc_lo3);  in setup_sigcontext()
433 		err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);  in setup_sigcontext()
441 	err |= protected_save_fp_context(sc);  in setup_sigcontext()
487 int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in restore_sigcontext()  argument
496 	err |= __get_user(regs->cp0_epc, &sc->sc_pc);  in restore_sigcontext()
499 	err |= __get_user(regs->acx, &sc->sc_acx);  in restore_sigcontext()
501 	err |= __get_user(regs->hi, &sc->sc_mdhi);  in restore_sigcontext()
502 	err |= __get_user(regs->lo, &sc->sc_mdlo);  in restore_sigcontext()
504 		err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);  in restore_sigcontext()
505 		err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);  in restore_sigcontext()
506 		err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);  in restore_sigcontext()
507 		err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);  in restore_sigcontext()
508 		err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);  in restore_sigcontext()
509 		err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);  in restore_sigcontext()
510 		err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);  in restore_sigcontext()
514 		err |= __get_user(regs->regs[i], &sc->sc_regs[i]);  in restore_sigcontext()
516 	return err ?: protected_restore_fp_context(sc);  in restore_sigcontext()
869 static int smp_save_fp_context(void __user *sc)  in smp_save_fp_context()  argument
872 	       ? save_hw_fp_context(sc)  in smp_save_fp_context()
873 	       : copy_fp_to_sigcontext(sc);  in smp_save_fp_context()
876 static int smp_restore_fp_context(void __user *sc)  in smp_restore_fp_context()  argument
879 	       ? restore_hw_fp_context(sc)  in smp_restore_fp_context()
880 	       : copy_fp_from_sigcontext(sc);  in smp_restore_fp_context()