| entry.S (812489ac4dd91144a74ce65ecf232252a2e406fb) | entry.S (63d7f9f11e5e81de2ce8f1c7a8aaed5b0288eddf) |
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| 1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * OpenRISC entry.S 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * --- 92 unchanged lines hidden (view full) --- 101 */ 102 103#define RESTORE_ALL \ 104 DISABLE_INTERRUPTS(r3,r4) ;\ 105 l.lwz r3,PT_PC(r1) ;\ 106 l.mtspr r0,r3,SPR_EPCR_BASE ;\ 107 l.lwz r3,PT_SR(r1) ;\ 108 l.mtspr r0,r3,SPR_ESR_BASE ;\ | 1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * OpenRISC entry.S 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * --- 92 unchanged lines hidden (view full) --- 101 */ 102 103#define RESTORE_ALL \ 104 DISABLE_INTERRUPTS(r3,r4) ;\ 105 l.lwz r3,PT_PC(r1) ;\ 106 l.mtspr r0,r3,SPR_EPCR_BASE ;\ 107 l.lwz r3,PT_SR(r1) ;\ 108 l.mtspr r0,r3,SPR_ESR_BASE ;\ |
| 109 l.lwz r3,PT_FPCSR(r1) ;\ 110 l.mtspr r0,r3,SPR_FPCSR ;\ |
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| 109 l.lwz r2,PT_GPR2(r1) ;\ 110 l.lwz r3,PT_GPR3(r1) ;\ 111 l.lwz r4,PT_GPR4(r1) ;\ 112 l.lwz r5,PT_GPR5(r1) ;\ 113 l.lwz r6,PT_GPR6(r1) ;\ 114 l.lwz r7,PT_GPR7(r1) ;\ 115 l.lwz r8,PT_GPR8(r1) ;\ 116 l.lwz r9,PT_GPR9(r1) ;\ --- 53 unchanged lines hidden (view full) --- 170 l.sw PT_GPR25(r1),r25 ;\ 171 l.sw PT_GPR26(r1),r26 ;\ 172 l.sw PT_GPR27(r1),r27 ;\ 173 l.sw PT_GPR28(r1),r28 ;\ 174 l.sw PT_GPR29(r1),r29 ;\ 175 /* r30 already save */ ;\ 176 l.sw PT_GPR31(r1),r31 ;\ 177 TRACE_IRQS_OFF_ENTRY ;\ | 111 l.lwz r2,PT_GPR2(r1) ;\ 112 l.lwz r3,PT_GPR3(r1) ;\ 113 l.lwz r4,PT_GPR4(r1) ;\ 114 l.lwz r5,PT_GPR5(r1) ;\ 115 l.lwz r6,PT_GPR6(r1) ;\ 116 l.lwz r7,PT_GPR7(r1) ;\ 117 l.lwz r8,PT_GPR8(r1) ;\ 118 l.lwz r9,PT_GPR9(r1) ;\ --- 53 unchanged lines hidden (view full) --- 172 l.sw PT_GPR25(r1),r25 ;\ 173 l.sw PT_GPR26(r1),r26 ;\ 174 l.sw PT_GPR27(r1),r27 ;\ 175 l.sw PT_GPR28(r1),r28 ;\ 176 l.sw PT_GPR29(r1),r29 ;\ 177 /* r30 already save */ ;\ 178 l.sw PT_GPR31(r1),r31 ;\ 179 TRACE_IRQS_OFF_ENTRY ;\ |
| 180 l.mfspr r30,r0,SPR_FPCSR ;\ 181 l.sw PT_FPCSR(r1),r30 ;\ |
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| 178 /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ 179 l.addi r30,r0,-1 ;\ 180 l.sw PT_ORIG_GPR11(r1),r30 181 182#define UNHANDLED_EXCEPTION(handler,vector) \ 183 .global handler ;\ 184handler: ;\ 185 /* r1, EPCR, ESR already saved */ ;\ --- 24 unchanged lines hidden (view full) --- 210 l.sw PT_GPR27(r1),r27 ;\ 211 l.sw PT_GPR28(r1),r28 ;\ 212 l.sw PT_GPR29(r1),r29 ;\ 213 /* r30 already saved */ ;\ 214 l.sw PT_GPR31(r1),r31 ;\ 215 /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ 216 l.addi r30,r0,-1 ;\ 217 l.sw PT_ORIG_GPR11(r1),r30 ;\ | 182 /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ 183 l.addi r30,r0,-1 ;\ 184 l.sw PT_ORIG_GPR11(r1),r30 185 186#define UNHANDLED_EXCEPTION(handler,vector) \ 187 .global handler ;\ 188handler: ;\ 189 /* r1, EPCR, ESR already saved */ ;\ --- 24 unchanged lines hidden (view full) --- 214 l.sw PT_GPR27(r1),r27 ;\ 215 l.sw PT_GPR28(r1),r28 ;\ 216 l.sw PT_GPR29(r1),r29 ;\ 217 /* r30 already saved */ ;\ 218 l.sw PT_GPR31(r1),r31 ;\ 219 /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ 220 l.addi r30,r0,-1 ;\ 221 l.sw PT_ORIG_GPR11(r1),r30 ;\ |
| 222 l.mfspr r30,r0,SPR_FPCSR ;\ 223 l.sw PT_FPCSR(r1),r30 ;\ |
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| 218 l.addi r3,r1,0 ;\ 219 /* r4 is exception EA */ ;\ 220 l.addi r5,r0,vector ;\ 221 l.jal unhandled_exception ;\ 222 l.nop ;\ 223 l.j _ret_from_exception ;\ 224 l.nop 225 --- 856 unchanged lines hidden (view full) --- 1082 l.sw PT_GPR18(r1),r18 1083 l.sw PT_GPR20(r1),r20 1084 l.sw PT_GPR22(r1),r22 1085 l.sw PT_GPR24(r1),r24 1086 l.sw PT_GPR26(r1),r26 1087 l.sw PT_GPR28(r1),r28 1088 l.sw PT_GPR30(r1),r30 1089 | 224 l.addi r3,r1,0 ;\ 225 /* r4 is exception EA */ ;\ 226 l.addi r5,r0,vector ;\ 227 l.jal unhandled_exception ;\ 228 l.nop ;\ 229 l.j _ret_from_exception ;\ 230 l.nop 231 --- 856 unchanged lines hidden (view full) --- 1088 l.sw PT_GPR18(r1),r18 1089 l.sw PT_GPR20(r1),r20 1090 l.sw PT_GPR22(r1),r22 1091 l.sw PT_GPR24(r1),r24 1092 l.sw PT_GPR26(r1),r26 1093 l.sw PT_GPR28(r1),r28 1094 l.sw PT_GPR30(r1),r30 1095 |
| 1096 /* Store the old FPU state to new pt_regs */ 1097 l.mfspr r29,r0,SPR_FPCSR 1098 l.sw PT_FPCSR(r1),r29 1099 |
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| 1090 l.addi r11,r10,0 /* Save old 'current' to 'last' return value*/ 1091 1092 /* We use thread_info->ksp for storing the address of the above 1093 * structure so that we can get back to it later... we don't want 1094 * to lose the value of thread_info->ksp, though, so store it as 1095 * pt_regs->sp so that we can easily restore it when we are made 1096 * live again... 1097 */ --- 6 unchanged lines hidden (view full) --- 1104 l.sw TI_KSP(r10),r1 /* Save old stack pointer */ 1105 l.or r10,r4,r0 /* Set up new current_thread_info */ 1106 l.lwz r1,TI_KSP(r10) /* Load new stack pointer */ 1107 1108 /* Restore the old value of thread_info->ksp */ 1109 l.lwz r29,PT_SP(r1) 1110 l.sw TI_KSP(r10),r29 1111 | 1100 l.addi r11,r10,0 /* Save old 'current' to 'last' return value*/ 1101 1102 /* We use thread_info->ksp for storing the address of the above 1103 * structure so that we can get back to it later... we don't want 1104 * to lose the value of thread_info->ksp, though, so store it as 1105 * pt_regs->sp so that we can easily restore it when we are made 1106 * live again... 1107 */ --- 6 unchanged lines hidden (view full) --- 1114 l.sw TI_KSP(r10),r1 /* Save old stack pointer */ 1115 l.or r10,r4,r0 /* Set up new current_thread_info */ 1116 l.lwz r1,TI_KSP(r10) /* Load new stack pointer */ 1117 1118 /* Restore the old value of thread_info->ksp */ 1119 l.lwz r29,PT_SP(r1) 1120 l.sw TI_KSP(r10),r29 1121 |
| 1122 /* Restore the old value of FPCSR */ 1123 l.lwz r29,PT_FPCSR(r1) 1124 l.mtspr r0,r29,SPR_FPCSR 1125 |
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| 1112 /* ...and restore the registers, except r11 because the return value 1113 * has already been set above. 1114 */ 1115 l.lwz r2,PT_GPR2(r1) 1116 l.lwz r9,PT_GPR9(r1) 1117 /* No need to restore r10 */ 1118 /* ...and do not restore r11 */ 1119 --- 104 unchanged lines hidden --- | 1126 /* ...and restore the registers, except r11 because the return value 1127 * has already been set above. 1128 */ 1129 l.lwz r2,PT_GPR2(r1) 1130 l.lwz r9,PT_GPR9(r1) 1131 /* No need to restore r10 */ 1132 /* ...and do not restore r11 */ 1133 --- 104 unchanged lines hidden --- |