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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-07 04:55:16 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-07 04:55:16 -0400 |
commit | a1b81a84fff05dbfef45b7012c26e1fee9973e5d (patch) | |
tree | 3d053e76542ad4d20bd83ad35c13eabff97003ab /arch/avr32/include/asm/asm.h | |
parent | 4fb8af10d0fd09372d52966b76922b9e82bbc950 (diff) | |
parent | 3663b736a5083b3bce74520b637f630f01f66a7f (diff) |
Merge branch 'header-move' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
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 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2004-2006 Atmel Corporation | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License version 2 as | ||
6 | * published by the Free Software Foundation. | ||
7 | */ | ||
8 | #ifndef __ASM_AVR32_ASM_H__ | ||
9 | #define __ASM_AVR32_ASM_H__ | ||
10 | |||
11 | #include <asm/sysreg.h> | ||
12 | #include <asm/asm-offsets.h> | ||
13 | #include <asm/thread_info.h> | ||
14 | |||
15 | #define mask_interrupts ssrf SYSREG_GM_OFFSET | ||
16 | #define mask_exceptions ssrf SYSREG_EM_OFFSET | ||
17 | #define unmask_interrupts csrf SYSREG_GM_OFFSET | ||
18 | #define unmask_exceptions csrf SYSREG_EM_OFFSET | ||
19 | |||
20 | #ifdef CONFIG_FRAME_POINTER | ||
21 | .macro save_fp | ||
22 | st.w --sp, r7 | ||
23 | .endm | ||
24 | .macro restore_fp | ||
25 | ld.w r7, sp++ | ||
26 | .endm | ||
27 | .macro zero_fp | ||
28 | mov r7, 0 | ||
29 | .endm | ||
30 | #else | ||
31 | .macro save_fp | ||
32 | .endm | ||
33 | .macro restore_fp | ||
34 | .endm | ||
35 | .macro zero_fp | ||
36 | .endm | ||
37 | #endif | ||
38 | .macro get_thread_info reg | ||
39 | mov \reg, sp | ||
40 | andl \reg, ~(THREAD_SIZE - 1) & 0xffff | ||
41 | .endm | ||
42 | |||
43 | /* Save and restore registers */ | ||
44 | .macro save_min sr, tmp=lr | ||
45 | pushm lr | ||
46 | mfsr \tmp, \sr | ||
47 | zero_fp | ||
48 | st.w --sp, \tmp | ||
49 | .endm | ||
50 | |||
51 | .macro restore_min sr, tmp=lr | ||
52 | ld.w \tmp, sp++ | ||
53 | mtsr \sr, \tmp | ||
54 | popm lr | ||
55 | .endm | ||
56 | |||
57 | .macro save_half sr, tmp=lr | ||
58 | save_fp | ||
59 | pushm r8-r9,r10,r11,r12,lr | ||
60 | zero_fp | ||
61 | mfsr \tmp, \sr | ||
62 | st.w --sp, \tmp | ||
63 | .endm | ||
64 | |||
65 | .macro restore_half sr, tmp=lr | ||
66 | ld.w \tmp, sp++ | ||
67 | mtsr \sr, \tmp | ||
68 | popm r8-r9,r10,r11,r12,lr | ||
69 | restore_fp | ||
70 | .endm | ||
71 | |||
72 | .macro save_full_user sr, tmp=lr | ||
73 | stmts --sp, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr | ||
74 | st.w --sp, lr | ||
75 | zero_fp | ||
76 | mfsr \tmp, \sr | ||
77 | st.w --sp, \tmp | ||
78 | .endm | ||
79 | |||
80 | .macro restore_full_user sr, tmp=lr | ||
81 | ld.w \tmp, sp++ | ||
82 | mtsr \sr, \tmp | ||
83 | ld.w lr, sp++ | ||
84 | ldmts sp++, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr | ||
85 | .endm | ||
86 | |||
87 | /* uaccess macros */ | ||
88 | .macro branch_if_kernel scratch, label | ||
89 | get_thread_info \scratch | ||
90 | ld.w \scratch, \scratch[TI_flags] | ||
91 | bld \scratch, TIF_USERSPACE | ||
92 | brcc \label | ||
93 | .endm | ||
94 | |||
95 | .macro ret_if_privileged scratch, addr, size, ret | ||
96 | sub \scratch, \size, 1 | ||
97 | add \scratch, \addr | ||
98 | retcs \ret | ||
99 | retmi \ret | ||
100 | .endm | ||
101 | |||
102 | #endif /* __ASM_AVR32_ASM_H__ */ | ||