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/* * Copyright (C) 2004-2006 Atmel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_AVR32_ASM_H__ #define __ASM_AVR32_ASM_H__ #include <asm/sysreg.h> #include <asm/asm-offsets.h> #include <asm/thread_info.h> #define mask_interrupts ssrf SYSREG_GM_OFFSET #define mask_exceptions ssrf SYSREG_EM_OFFSET #define unmask_interrupts csrf SYSREG_GM_OFFSET #define unmask_exceptions csrf SYSREG_EM_OFFSET #ifdef CONFIG_FRAME_POINTER .macro save_fp st.w --sp, r7 .endm .macro restore_fp ld.w r7, sp++ .endm .macro zero_fp mov r7, 0 .endm #else .macro save_fp .endm .macro restore_fp .endm .macro zero_fp .endm #endif .macro get_thread_info reg mov \reg, sp andl \reg, ~(THREAD_SIZE - 1) & 0xffff .endm /* Save and restore registers */ .macro save_min sr, tmp=lr pushm lr mfsr \tmp, \sr zero_fp st.w --sp, \tmp .endm .macro restore_min sr, tmp=lr ld.w \tmp, sp++ mtsr \sr, \tmp popm lr .endm .macro save_half sr, tmp=lr save_fp pushm r8-r9,r10,r11,r12,lr zero_fp mfsr \tmp, \sr st.w --sp, \tmp .endm .macro restore_half sr, tmp=lr ld.w \tmp, sp++ mtsr \sr, \tmp popm r8-r9,r10,r11,r12,lr restore_fp .endm .macro save_full_user sr, tmp=lr stmts --sp, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr st.w --sp, lr zero_fp mfsr \tmp, \sr st.w --sp, \tmp .endm .macro restore_full_user sr, tmp=lr ld.w \tmp, sp++ mtsr \sr, \tmp ld.w lr, sp++ ldmts sp++, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr .endm /* uaccess macros */ .macro branch_if_kernel scratch, label get_thread_info \scratch ld.w \scratch, \scratch[TI_flags] bld \scratch, TIF_USERSPACE brcc \label .endm .macro ret_if_privileged scratch, addr, size, ret sub \scratch, \size, 1 add \scratch, \addr retcs \ret retmi \ret .endm #endif /* __ASM_AVR32_ASM_H__ */