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| author | Ingo Molnar <mingo@elte.hu> | 2008-09-24 09:56:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-24 09:56:20 +0200 |
| commit | ebdd90a8cb2e3963f55499850f02ce6003558b55 (patch) | |
| tree | d153f917ed41d257ddafa22f9cc2201bfddf8f9c /arch/avr32/include/asm/asm.h | |
| parent | 3c9339049df5cc3a468c11de6c4101a1ea8c3d83 (diff) | |
| parent | 72d31053f62c4bc464c2783974926969614a8649 (diff) | |
| download | linux-ebdd90a8cb2e3963f55499850f02ce6003558b55.tar.gz | |
Merge commit 'v2.6.27-rc7' into x86/pebs
Diffstat (limited to 'arch/avr32/include/asm/asm.h')
| -rw-r--r-- | arch/avr32/include/asm/asm.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/avr32/include/asm/asm.h b/arch/avr32/include/asm/asm.h new file mode 100644 index 000000000000..a2c64f404b98 --- /dev/null +++ b/arch/avr32/include/asm/asm.h @@ -0,0 +1,102 @@ +/* + * 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__ */ |