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- #ifndef __ASM_ARC_ENTRY_H
- #define __ASM_ARC_ENTRY_H
- #include <asm/unistd.h> /* For NR_syscalls defination */
- #include <asm/arcregs.h>
- #include <asm/ptrace.h>
- #include <asm/processor.h> /* For VMALLOC_START */
- #include <asm/mmu.h>
- #ifdef CONFIG_ISA_ARCOMPACT
- #include <asm/entry-compact.h> /* ISA specific bits */
- #else
- #include <asm/entry-arcv2.h>
- #endif
- .macro PUSH reg
- st.a \reg, [sp, -4]
- .endm
- .macro PUSHAX aux
- lr r9, [\aux]
- PUSH r9
- .endm
- .macro POP reg
- ld.ab \reg, [sp, 4]
- .endm
- .macro POPAX aux
- POP r9
- sr r9, [\aux]
- .endm
- .macro SAVE_R0_TO_R12
- PUSH r0
- PUSH r1
- PUSH r2
- PUSH r3
- PUSH r4
- PUSH r5
- PUSH r6
- PUSH r7
- PUSH r8
- PUSH r9
- PUSH r10
- PUSH r11
- PUSH r12
- .endm
- .macro RESTORE_R12_TO_R0
- POP r12
- POP r11
- POP r10
- POP r9
- POP r8
- POP r7
- POP r6
- POP r5
- POP r4
- POP r3
- POP r2
- POP r1
- POP r0
- .endm
- .macro SAVE_R13_TO_R24
- PUSH r13
- PUSH r14
- PUSH r15
- PUSH r16
- PUSH r17
- PUSH r18
- PUSH r19
- PUSH r20
- PUSH r21
- PUSH r22
- PUSH r23
- PUSH r24
- .endm
- .macro RESTORE_R24_TO_R13
- POP r24
- POP r23
- POP r22
- POP r21
- POP r20
- POP r19
- POP r18
- POP r17
- POP r16
- POP r15
- POP r14
- POP r13
- .endm
- .macro SAVE_CALLEE_SAVED_USER
- mov r12, sp
- SAVE_R13_TO_R24
- #ifdef CONFIG_ARC_CURR_IN_REG
-
- ld r12, [r12, PT_user_r25]
- PUSH r12
- #else
- PUSH r25
- #endif
- .endm
- .macro SAVE_CALLEE_SAVED_KERNEL
- SAVE_R13_TO_R24
- #ifdef CONFIG_ARC_CURR_IN_REG
- sub sp, sp, 4
- #else
- PUSH r25
- #endif
- .endm
- .macro RESTORE_CALLEE_SAVED_KERNEL
- #ifdef CONFIG_ARC_CURR_IN_REG
- add sp, sp, 4
- #else
- POP r25
- #endif
- RESTORE_R24_TO_R13
- .endm
- .macro RESTORE_CALLEE_SAVED_USER
- #ifdef CONFIG_ARC_CURR_IN_REG
- POP r12
- #else
- POP r25
- #endif
- RESTORE_R24_TO_R13
-
- #ifdef CONFIG_ARC_CURR_IN_REG
- st r12, [sp, PT_user_r25]
- #endif
- .endm
- .macro DISCARD_CALLEE_SAVED_USER
- add sp, sp, SZ_CALLEE_REGS
- .endm
- .macro GET_TSK_STACK_BASE tsk, out
-
- ld \out, [\tsk, TASK_THREAD_INFO]
-
- add2 \out, \out, (THREAD_SIZE)/4
- .endm
- .macro GET_CURR_THR_INFO_FLAGS reg
- GET_CURR_THR_INFO_FROM_SP \reg
- ld \reg, [\reg, THREAD_INFO_FLAGS]
- .endm
- #ifdef CONFIG_SMP
- .macro GET_CURR_TASK_ON_CPU reg
- GET_CPU_ID \reg
- ld.as \reg, [@_current_task, \reg]
- .endm
- .macro SET_CURR_TASK_ON_CPU tsk, tmp
- GET_CPU_ID \tmp
- add2 \tmp, @_current_task, \tmp
- st \tsk, [\tmp]
- #ifdef CONFIG_ARC_CURR_IN_REG
- mov r25, \tsk
- #endif
- .endm
- #else /* Uniprocessor implementation of macros */
- .macro GET_CURR_TASK_ON_CPU reg
- ld \reg, [@_current_task]
- .endm
- .macro SET_CURR_TASK_ON_CPU tsk, tmp
- st \tsk, [@_current_task]
- #ifdef CONFIG_ARC_CURR_IN_REG
- mov r25, \tsk
- #endif
- .endm
- #endif /* SMP / UNI */
- #ifdef CONFIG_ARC_CURR_IN_REG
- .macro GET_CURR_TASK_FIELD_PTR off, reg
- add \reg, r25, \off
- .endm
- #else
- .macro GET_CURR_TASK_FIELD_PTR off, reg
- GET_CURR_TASK_ON_CPU \reg
- add \reg, \reg, \off
- .endm
- #endif /* CONFIG_ARC_CURR_IN_REG */
- #endif /* __ASM_ARC_ENTRY_H */
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