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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__ */
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