44 static int (*save_fp_context)(struct sigcontext __user *sc);
45 static int (*restore_fp_context)(struct sigcontext __user *sc);
47 extern asmlinkage int _save_fp_context(struct sigcontext __user *sc);
48 extern asmlinkage int _restore_fp_context(struct sigcontext __user *sc);
68 static int copy_fp_to_sigcontext(struct sigcontext __user *sc)  in copy_fp_to_sigcontext()  argument
76 			       &sc->sc_fpregs[i]);  in copy_fp_to_sigcontext()
78 	err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);  in copy_fp_to_sigcontext()
83 static int copy_fp_from_sigcontext(struct sigcontext __user *sc)  in copy_fp_from_sigcontext()  argument
90 		err |= __get_user(fpr_val, &sc->sc_fpregs[i]);  in copy_fp_from_sigcontext()
93 	err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);  in copy_fp_from_sigcontext()
101 static int protected_save_fp_context(struct sigcontext __user *sc)  in protected_save_fp_context()  argument
108 			err = save_fp_context(sc);  in protected_save_fp_context()
112 			err = copy_fp_to_sigcontext(sc);  in protected_save_fp_context()
117 		err = __put_user(0, &sc->sc_fpregs[0]) |  in protected_save_fp_context()
118 			__put_user(0, &sc->sc_fpregs[31]) |  in protected_save_fp_context()
119 			__put_user(0, &sc->sc_fpc_csr);  in protected_save_fp_context()
129 	err = save_fp_context(sc); /* this might fail */  in protected_save_fp_context()
134 static int protected_restore_fp_context(struct sigcontext __user *sc)  in protected_restore_fp_context()  argument
141 			err = restore_fp_context(sc);  in protected_restore_fp_context()
145 			err = copy_fp_from_sigcontext(sc);  in protected_restore_fp_context()
150 		err = __get_user(tmp, &sc->sc_fpregs[0]) |  in protected_restore_fp_context()
151 			__get_user(tmp, &sc->sc_fpregs[31]) |  in protected_restore_fp_context()
152 			__get_user(tmp, &sc->sc_fpc_csr);  in protected_restore_fp_context()
162 	err = restore_fp_context(sc); /* this might fail */  in protected_restore_fp_context()
167 int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in setup_sigcontext()  argument
173 	err |= __put_user(regs->cp0_epc, &sc->sc_pc);  in setup_sigcontext()
175 	err |= __put_user(0, &sc->sc_regs[0]);  in setup_sigcontext()
177 		err |= __put_user(regs->regs[i], &sc->sc_regs[i]);  in setup_sigcontext()
180 	err |= __put_user(regs->acx, &sc->sc_acx);  in setup_sigcontext()
182 	err |= __put_user(regs->hi, &sc->sc_mdhi);  in setup_sigcontext()
183 	err |= __put_user(regs->lo, &sc->sc_mdlo);  in setup_sigcontext()
185 		err |= __put_user(mfhi1(), &sc->sc_hi1);  in setup_sigcontext()
186 		err |= __put_user(mflo1(), &sc->sc_lo1);  in setup_sigcontext()
187 		err |= __put_user(mfhi2(), &sc->sc_hi2);  in setup_sigcontext()
188 		err |= __put_user(mflo2(), &sc->sc_lo2);  in setup_sigcontext()
189 		err |= __put_user(mfhi3(), &sc->sc_hi3);  in setup_sigcontext()
190 		err |= __put_user(mflo3(), &sc->sc_lo3);  in setup_sigcontext()
191 		err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);  in setup_sigcontext()
195 	err |= __put_user(used_math, &sc->sc_used_math);  in setup_sigcontext()
202 		err |= protected_save_fp_context(sc);  in setup_sigcontext()
227 check_and_restore_fp_context(struct sigcontext __user *sc)  in check_and_restore_fp_context()  argument
231 	err = sig = fpcsr_pending(&sc->sc_fpc_csr);  in check_and_restore_fp_context()
234 	err |= protected_restore_fp_context(sc);  in check_and_restore_fp_context()
238 int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in restore_sigcontext()  argument
248 	err |= __get_user(regs->cp0_epc, &sc->sc_pc);  in restore_sigcontext()
251 	err |= __get_user(regs->acx, &sc->sc_acx);  in restore_sigcontext()
253 	err |= __get_user(regs->hi, &sc->sc_mdhi);  in restore_sigcontext()
254 	err |= __get_user(regs->lo, &sc->sc_mdlo);  in restore_sigcontext()
256 		err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);  in restore_sigcontext()
257 		err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);  in restore_sigcontext()
258 		err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);  in restore_sigcontext()
259 		err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);  in restore_sigcontext()
260 		err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);  in restore_sigcontext()
261 		err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);  in restore_sigcontext()
262 		err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);  in restore_sigcontext()
266 		err |= __get_user(regs->regs[i], &sc->sc_regs[i]);  in restore_sigcontext()
268 	err |= __get_user(used_math, &sc->sc_used_math);  in restore_sigcontext()
274 			err = check_and_restore_fp_context(sc);  in restore_sigcontext()
633 static int smp_save_fp_context(struct sigcontext __user *sc)  in smp_save_fp_context()  argument
636 	       ? _save_fp_context(sc)  in smp_save_fp_context()
637 	       : copy_fp_to_sigcontext(sc);  in smp_save_fp_context()
640 static int smp_restore_fp_context(struct sigcontext __user *sc)  in smp_restore_fp_context()  argument
643 	       ? _restore_fp_context(sc)  in smp_restore_fp_context()
644 	       : copy_fp_from_sigcontext(sc);  in smp_restore_fp_context()