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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__ */
|
|
