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| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
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| 1 | 2 | /* |
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| 2 | 3 | * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) |
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| 3 | 4 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
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| 4 | | - * |
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| 5 | | - * This program is free software; you can redistribute it and/or modify |
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| 6 | | - * it under the terms of the GNU General Public License version 2 as |
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| 7 | | - * published by the Free Software Foundation. |
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| 8 | 5 | * |
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| 9 | 6 | * Vineetg: March 2009 (Supporting 2 levels of Interrupts) |
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| 10 | 7 | * Stack switching code can no longer reliably rely on the fact that |
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| .. | .. |
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| 35 | 32 | #include <asm/asm-offsets.h> |
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| 36 | 33 | #include <asm/irqflags-compact.h> |
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| 37 | 34 | #include <asm/thread_info.h> /* For THREAD_SIZE */ |
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| 38 | | - |
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| 39 | | -#ifdef CONFIG_ARC_PLAT_EZNPS |
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| 40 | | -#include <plat/ctop.h> |
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| 41 | | -#endif |
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| 42 | 35 | |
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| 43 | 36 | /*-------------------------------------------------------------- |
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| 44 | 37 | * Switch to Kernel Mode stack if SP points to User Mode stack |
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| .. | .. |
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| 133 | 126 | * to be saved again on kernel mode stack, as part of pt_regs. |
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| 134 | 127 | *-------------------------------------------------------------*/ |
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| 135 | 128 | .macro PROLOG_FREEUP_REG reg, mem |
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| 136 | | -#ifdef CONFIG_SMP |
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| 129 | +#ifndef ARC_USE_SCRATCH_REG |
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| 137 | 130 | sr \reg, [ARC_REG_SCRATCH_DATA0] |
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| 138 | 131 | #else |
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| 139 | 132 | st \reg, [\mem] |
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| .. | .. |
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| 141 | 134 | .endm |
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| 142 | 135 | |
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| 143 | 136 | .macro PROLOG_RESTORE_REG reg, mem |
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| 144 | | -#ifdef CONFIG_SMP |
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| 137 | +#ifndef ARC_USE_SCRATCH_REG |
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| 145 | 138 | lr \reg, [ARC_REG_SCRATCH_DATA0] |
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| 146 | 139 | #else |
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| 147 | 140 | ld \reg, [\mem] |
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| .. | .. |
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| 192 | 185 | PUSHAX lp_start |
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| 193 | 186 | PUSHAX erbta |
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| 194 | 187 | |
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| 195 | | -#ifdef CONFIG_ARC_PLAT_EZNPS |
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| 196 | | - .word CTOP_INST_SCHD_RW |
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| 197 | | - PUSHAX CTOP_AUX_GPA1 |
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| 198 | | - PUSHAX CTOP_AUX_EFLAGS |
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| 199 | | -#endif |
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| 200 | | - |
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| 201 | | - lr r9, [ecr] |
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| 202 | | - st r9, [sp, PT_event] /* EV_Trap expects r9 to have ECR */ |
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| 188 | + lr r10, [ecr] |
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| 189 | + st r10, [sp, PT_event] /* EV_Trap expects r10 to have ECR */ |
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| 203 | 190 | .endm |
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| 204 | 191 | |
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| 205 | 192 | /*-------------------------------------------------------------- |
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| .. | .. |
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| 214 | 201 | * by hardware and that is not good. |
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| 215 | 202 | *-------------------------------------------------------------*/ |
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| 216 | 203 | .macro EXCEPTION_EPILOGUE |
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| 217 | | -#ifdef CONFIG_ARC_PLAT_EZNPS |
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| 218 | | - .word CTOP_INST_SCHD_RW |
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| 219 | | - POPAX CTOP_AUX_EFLAGS |
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| 220 | | - POPAX CTOP_AUX_GPA1 |
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| 221 | | -#endif |
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| 222 | 204 | |
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| 223 | 205 | POPAX erbta |
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| 224 | 206 | POPAX lp_start |
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| .. | .. |
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| 281 | 263 | PUSHAX lp_start |
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| 282 | 264 | PUSHAX bta_l\LVL\() |
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| 283 | 265 | |
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| 284 | | -#ifdef CONFIG_ARC_PLAT_EZNPS |
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| 285 | | - .word CTOP_INST_SCHD_RW |
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| 286 | | - PUSHAX CTOP_AUX_GPA1 |
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| 287 | | - PUSHAX CTOP_AUX_EFLAGS |
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| 288 | | -#endif |
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| 289 | 266 | .endm |
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| 290 | 267 | |
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| 291 | 268 | /*-------------------------------------------------------------- |
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| .. | .. |
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| 298 | 275 | * by hardware and that is not good. |
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| 299 | 276 | *-------------------------------------------------------------*/ |
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| 300 | 277 | .macro INTERRUPT_EPILOGUE LVL |
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| 301 | | -#ifdef CONFIG_ARC_PLAT_EZNPS |
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| 302 | | - .word CTOP_INST_SCHD_RW |
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| 303 | | - POPAX CTOP_AUX_EFLAGS |
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| 304 | | - POPAX CTOP_AUX_GPA1 |
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| 305 | | -#endif |
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| 306 | 278 | |
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| 307 | 279 | POPAX bta_l\LVL\() |
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| 308 | 280 | POPAX lp_start |
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| .. | .. |
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| 330 | 302 | bic \reg, sp, (THREAD_SIZE - 1) |
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| 331 | 303 | .endm |
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| 332 | 304 | |
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| 333 | | -#ifndef CONFIG_ARC_PLAT_EZNPS |
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| 334 | 305 | /* Get CPU-ID of this core */ |
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| 335 | 306 | .macro GET_CPU_ID reg |
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| 336 | 307 | lr \reg, [identity] |
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| 337 | 308 | lsr \reg, \reg, 8 |
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| 338 | 309 | bmsk \reg, \reg, 7 |
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| 339 | 310 | .endm |
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| 340 | | -#endif |
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| 341 | 311 | |
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| 342 | 312 | #endif /* __ASM_ARC_ENTRY_COMPACT_H */ |
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