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Diffstat (limited to 'include/asm-mips/stackframe.h')
| -rw-r--r-- | include/asm-mips/stackframe.h | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h deleted file mode 100644 index a8919dcc93c..00000000000 --- a/include/asm-mips/stackframe.h +++ /dev/null @@ -1,353 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 1994, 95, 96, 99, 2001 Ralf Baechle - * Copyright (C) 1994, 1995, 1996 Paul M. Antoine. - * Copyright (C) 1999 Silicon Graphics, Inc. - */ -#ifndef _ASM_STACKFRAME_H -#define _ASM_STACKFRAME_H - -#include <linux/config.h> -#include <linux/threads.h> - -#include <asm/asm.h> -#include <asm/mipsregs.h> -#include <asm/asm-offsets.h> - - .macro SAVE_AT - .set push - .set noat - LONG_S $1, PT_R1(sp) - .set pop - .endm - - .macro SAVE_TEMP - mfhi v1 -#ifdef CONFIG_32BIT - LONG_S $8, PT_R8(sp) - LONG_S $9, PT_R9(sp) -#endif - LONG_S v1, PT_HI(sp) - mflo v1 - LONG_S $10, PT_R10(sp) - LONG_S $11, PT_R11(sp) - LONG_S v1, PT_LO(sp) - LONG_S $12, PT_R12(sp) - LONG_S $13, PT_R13(sp) - LONG_S $14, PT_R14(sp) - LONG_S $15, PT_R15(sp) - LONG_S $24, PT_R24(sp) - .endm - - .macro SAVE_STATIC - LONG_S $16, PT_R16(sp) - LONG_S $17, PT_R17(sp) - LONG_S $18, PT_R18(sp) - LONG_S $19, PT_R19(sp) - LONG_S $20, PT_R20(sp) - LONG_S $21, PT_R21(sp) - LONG_S $22, PT_R22(sp) - LONG_S $23, PT_R23(sp) - LONG_S $30, PT_R30(sp) - .endm - -#ifdef CONFIG_SMP - .macro get_saved_sp /* SMP variation */ -#ifdef CONFIG_32BIT - mfc0 k0, CP0_CONTEXT - lui k1, %hi(kernelsp) - srl k0, k0, 23 - addu k1, k0 - LONG_L k1, %lo(kernelsp)(k1) -#endif -#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64) - MFC0 k1, CP0_CONTEXT - dsra k1, 23 - lui k0, %hi(pgd_current) - addiu k0, %lo(pgd_current) - dsubu k1, k0 - lui k0, %hi(kernelsp) - daddu k1, k0 - LONG_L k1, %lo(kernelsp)(k1) -#endif -#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64) - MFC0 k1, CP0_CONTEXT - lui k0, %highest(kernelsp) - dsrl k1, 23 - daddiu k0, %higher(kernelsp) - dsll k0, k0, 16 - daddiu k0, %hi(kernelsp) - dsll k0, k0, 16 - daddu k1, k1, k0 - LONG_L k1, %lo(kernelsp)(k1) -#endif - .endm - - .macro set_saved_sp stackp temp temp2 -#ifdef CONFIG_32BIT - mfc0 \temp, CP0_CONTEXT - srl \temp, 23 -#endif -#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64) - lw \temp, TI_CPU(gp) - dsll \temp, 3 -#endif -#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64) - MFC0 \temp, CP0_CONTEXT - dsrl \temp, 23 -#endif - LONG_S \stackp, kernelsp(\temp) - .endm -#else - .macro get_saved_sp /* Uniprocessor variation */ -#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64) - lui k1, %highest(kernelsp) - daddiu k1, %higher(kernelsp) - dsll k1, k1, 16 - daddiu k1, %hi(kernelsp) - dsll k1, k1, 16 -#else - lui k1, %hi(kernelsp) -#endif - LONG_L k1, %lo(kernelsp)(k1) - .endm - - .macro set_saved_sp stackp temp temp2 - LONG_S \stackp, kernelsp - .endm -#endif - - .macro SAVE_SOME - .set push - .set noat - .set reorder - mfc0 k0, CP0_STATUS - sll k0, 3 /* extract cu0 bit */ - .set noreorder - bltz k0, 8f - move k1, sp - .set reorder - /* Called from user mode, new stack. */ - get_saved_sp -8: move k0, sp - PTR_SUBU sp, k1, PT_SIZE - LONG_S k0, PT_R29(sp) - LONG_S $3, PT_R3(sp) - LONG_S $0, PT_R0(sp) - mfc0 v1, CP0_STATUS - LONG_S $2, PT_R2(sp) - LONG_S v1, PT_STATUS(sp) - LONG_S $4, PT_R4(sp) - mfc0 v1, CP0_CAUSE - LONG_S $5, PT_R5(sp) - LONG_S v1, PT_CAUSE(sp) - LONG_S $6, PT_R6(sp) - MFC0 v1, CP0_EPC - LONG_S $7, PT_R7(sp) -#ifdef CONFIG_64BIT - LONG_S $8, PT_R8(sp) - LONG_S $9, PT_R9(sp) -#endif - LONG_S v1, PT_EPC(sp) - LONG_S $25, PT_R25(sp) - LONG_S $28, PT_R28(sp) - LONG_S $31, PT_R31(sp) - ori $28, sp, _THREAD_MASK - xori $28, _THREAD_MASK - .set pop - .endm - - .macro SAVE_ALL - SAVE_SOME - SAVE_AT - SAVE_TEMP - SAVE_STATIC - .endm - - .macro RESTORE_AT - .set push - .set noat - LONG_L $1, PT_R1(sp) - .set pop - .endm - - .macro RESTORE_TEMP - LONG_L $24, PT_LO(sp) -#ifdef CONFIG_32BIT - LONG_L $8, PT_R8(sp) - LONG_L $9, PT_R9(sp) -#endif - mtlo $24 - LONG_L $24, PT_HI(sp) - LONG_L $10, PT_R10(sp) - LONG_L $11, PT_R11(sp) - mthi $24 - LONG_L $12, PT_R12(sp) - LONG_L $13, PT_R13(sp) - LONG_L $14, PT_R14(sp) - LONG_L $15, PT_R15(sp) - LONG_L $24, PT_R24(sp) - .endm - - .macro RESTORE_STATIC - LONG_L $16, PT_R16(sp) - LONG_L $17, PT_R17(sp) - LONG_L $18, PT_R18(sp) - LONG_L $19, PT_R19(sp) - LONG_L $20, PT_R20(sp) - LONG_L $21, PT_R21(sp) - LONG_L $22, PT_R22(sp) - LONG_L $23, PT_R23(sp) - LONG_L $30, PT_R30(sp) - .endm - -#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) - - .macro RESTORE_SOME - .set push - .set reorder - .set noat - mfc0 a0, CP0_STATUS - ori a0, 0x1f - xori a0, 0x1f - mtc0 a0, CP0_STATUS - li v1, 0xff00 - and a0, v1 - LONG_L v0, PT_STATUS(sp) - nor v1, $0, v1 - and v0, v1 - or v0, a0 - mtc0 v0, CP0_STATUS - LONG_L $31, PT_R31(sp) - LONG_L $28, PT_R28(sp) - LONG_L $25, PT_R25(sp) -#ifdef CONFIG_64BIT - LONG_L $8, PT_R8(sp) - LONG_L $9, PT_R9(sp) -#endif - LONG_L $7, PT_R7(sp) - LONG_L $6, PT_R6(sp) - LONG_L $5, PT_R5(sp) - LONG_L $4, PT_R4(sp) - LONG_L $3, PT_R3(sp) - LONG_L $2, PT_R2(sp) - .set pop - .endm - - .macro RESTORE_SP_AND_RET - .set push - .set noreorder - LONG_L k0, PT_EPC(sp) - LONG_L sp, PT_R29(sp) - jr k0 - rfe - .set pop - .endm - -#else - - .macro RESTORE_SOME - .set push - .set reorder - .set noat - mfc0 a0, CP0_STATUS - ori a0, 0x1f - xori a0, 0x1f - mtc0 a0, CP0_STATUS - li v1, 0xff00 - and a0, v1 - LONG_L v0, PT_STATUS(sp) - nor v1, $0, v1 - and v0, v1 - or v0, a0 - mtc0 v0, CP0_STATUS - LONG_L v1, PT_EPC(sp) - MTC0 v1, CP0_EPC - LONG_L $31, PT_R31(sp) - LONG_L $28, PT_R28(sp) - LONG_L $25, PT_R25(sp) -#ifdef CONFIG_64BIT - LONG_L $8, PT_R8(sp) - LONG_L $9, PT_R9(sp) -#endif - LONG_L $7, PT_R7(sp) - LONG_L $6, PT_R6(sp) - LONG_L $5, PT_R5(sp) - LONG_L $4, PT_R4(sp) - LONG_L $3, PT_R3(sp) - LONG_L $2, PT_R2(sp) - .set pop - .endm - - .macro RESTORE_SP_AND_RET - LONG_L sp, PT_R29(sp) - .set mips3 - eret - .set mips0 - .endm - -#endif - - .macro RESTORE_SP - LONG_L sp, PT_R29(sp) - .endm - - .macro RESTORE_ALL - RESTORE_TEMP - RESTORE_STATIC - RESTORE_AT - RESTORE_SOME - RESTORE_SP - .endm - - .macro RESTORE_ALL_AND_RET - RESTORE_TEMP - RESTORE_STATIC - RESTORE_AT - RESTORE_SOME - RESTORE_SP_AND_RET - .endm - -/* - * Move to kernel mode and disable interrupts. - * Set cp0 enable bit as sign that we're running on the kernel stack - */ - .macro CLI - mfc0 t0, CP0_STATUS - li t1, ST0_CU0 | 0x1f - or t0, t1 - xori t0, 0x1f - mtc0 t0, CP0_STATUS - irq_disable_hazard - .endm - -/* - * Move to kernel mode and enable interrupts. - * Set cp0 enable bit as sign that we're running on the kernel stack - */ - .macro STI - mfc0 t0, CP0_STATUS - li t1, ST0_CU0 | 0x1f - or t0, t1 - xori t0, 0x1e - mtc0 t0, CP0_STATUS - irq_enable_hazard - .endm - -/* - * Just move to kernel mode and leave interrupts as they are. - * Set cp0 enable bit as sign that we're running on the kernel stack - */ - .macro KMODE - mfc0 t0, CP0_STATUS - li t1, ST0_CU0 | 0x1e - or t0, t1 - xori t0, 0x1e - mtc0 t0, CP0_STATUS - irq_disable_hazard - .endm - -#endif /* _ASM_STACKFRAME_H */ |