^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2004 Microtronix Datacom Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef _ASM_NIOS2_ENTRY_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define _ASM_NIOS2_ENTRY_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifdef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/registers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/asm-offsets.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Standard Nios2 interrupt entry and exit macros.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Must be called with interrupts disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) .macro SAVE_ALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) rdctl r24, estatus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) andi r24, r24, ESTATUS_EU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) beq r24, r0, 1f /* In supervisor mode, already on kernel stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) movia r24, _current_thread /* Switch to current kernel stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ldw r24, 0(r24) /* using the thread_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) addi r24, r24, THREAD_SIZE-PT_REGS_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) stw sp, PT_SP(r24) /* Save user stack before changing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) mov sp, r24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) br 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 1 : mov r24, sp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) addi sp, sp, -PT_REGS_SIZE /* Backup the kernel stack pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) stw r24, PT_SP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 2 : stw r1, PT_R1(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) stw r2, PT_R2(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) stw r3, PT_R3(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) stw r4, PT_R4(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) stw r5, PT_R5(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) stw r6, PT_R6(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) stw r7, PT_R7(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) stw r8, PT_R8(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) stw r9, PT_R9(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) stw r10, PT_R10(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) stw r11, PT_R11(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) stw r12, PT_R12(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) stw r13, PT_R13(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) stw r14, PT_R14(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) stw r15, PT_R15(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) stw r2, PT_ORIG_R2(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) stw r7, PT_ORIG_R7(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) stw ra, PT_RA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) stw fp, PT_FP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) stw gp, PT_GP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) rdctl r24, estatus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) stw r24, PT_ESTATUS(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) stw ea, PT_EA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .macro RESTORE_ALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ldw r1, PT_R1(sp) /* Restore registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ldw r2, PT_R2(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ldw r3, PT_R3(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ldw r4, PT_R4(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ldw r5, PT_R5(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ldw r6, PT_R6(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ldw r7, PT_R7(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) ldw r8, PT_R8(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ldw r9, PT_R9(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ldw r10, PT_R10(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ldw r11, PT_R11(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ldw r12, PT_R12(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ldw r13, PT_R13(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) ldw r14, PT_R14(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ldw r15, PT_R15(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ldw ra, PT_RA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ldw fp, PT_FP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ldw gp, PT_GP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ldw r24, PT_ESTATUS(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) wrctl estatus, r24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ldw ea, PT_EA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) ldw sp, PT_SP(sp) /* Restore sp last */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .macro SAVE_SWITCH_STACK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) addi sp, sp, -SWITCH_STACK_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) stw r16, SW_R16(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) stw r17, SW_R17(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) stw r18, SW_R18(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) stw r19, SW_R19(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) stw r20, SW_R20(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) stw r21, SW_R21(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) stw r22, SW_R22(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) stw r23, SW_R23(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) stw fp, SW_FP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) stw gp, SW_GP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) stw ra, SW_RA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .macro RESTORE_SWITCH_STACK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ldw r16, SW_R16(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ldw r17, SW_R17(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ldw r18, SW_R18(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ldw r19, SW_R19(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ldw r20, SW_R20(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ldw r21, SW_R21(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ldw r22, SW_R22(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ldw r23, SW_R23(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ldw fp, SW_FP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) ldw gp, SW_GP(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ldw ra, SW_RA(sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) addi sp, sp, SWITCH_STACK_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .endm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #endif /* _ASM_NIOS2_ENTRY_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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