forked from Minki/linux
103 lines
1.9 KiB
C
103 lines
1.9 KiB
C
|
/*
|
||
|
|
* 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 SR_GM_BIT
|
||
|
|
#define mask_exceptions ssrf SR_EM_BIT
|
||
|
|
#define unmask_interrupts csrf SR_GM_BIT
|
||
|
|
#define unmask_exceptions csrf SR_EM_BIT
|
||
|
|
|
||
|
|
#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__ */
|