diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 13:39:02 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 13:39:02 -0400 |
| commit | 7e31aa11fc672bbe0dd0da59513c9efe3809ced7 (patch) | |
| tree | 0aafe6a0045230950ce6b26579a053da12614a49 /arch/arm/include/asm/assembler.h | |
| parent | 071f4924844c435a3ae0cdbab7d7df2f1da85713 (diff) | |
| parent | 9cb7117fa4858468014f76bd996076985111e955 (diff) | |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5182/1: pxa: Fix pcm990 compilation
[ARM] Fix explicit asm(-arm)?/arch-foo references
[ARM] move include/asm-arm to arch/arm/include/asm
[ARM] Remove explicit dependency for misc.o from compressed/Makefile
[ARM] initrd: claim initrd memory exclusively
[ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2)
[ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout
[ARM] add Sascha Hauer as Freescale i.MX Maintainer
[ARM] i.MX: add missing clock functions exports
[ARM] i.MX: remove set_imx_fb_info() export
[ARM] mx1ads: make mmc platform data available for modules
[ARM] mx2: add missing Kconfig dependency
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h new file mode 100644 index 000000000000..6116e4893c0a --- /dev/null +++ b/arch/arm/include/asm/assembler.h | |||
| @@ -0,0 +1,116 @@ | |||
| 1 | /* | ||
| 2 | * arch/arm/include/asm/assembler.h | ||
| 3 | * | ||
| 4 | * Copyright (C) 1996-2000 Russell King | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License version 2 as | ||
| 8 | * published by the Free Software Foundation. | ||
| 9 | * | ||
| 10 | * This file contains arm architecture specific defines | ||
| 11 | * for the different processors. | ||
| 12 | * | ||
| 13 | * Do not include any C declarations in this file - it is included by | ||
| 14 | * assembler source. | ||
| 15 | */ | ||
| 16 | #ifndef __ASSEMBLY__ | ||
| 17 | #error "Only include this from assembly code" | ||
| 18 | #endif | ||
| 19 | |||
| 20 | #include <asm/ptrace.h> | ||
| 21 | |||
| 22 | /* | ||
| 23 | * Endian independent macros for shifting bytes within registers. | ||
| 24 | */ | ||
| 25 | #ifndef __ARMEB__ | ||
| 26 | #define pull lsr | ||
| 27 | #define push lsl | ||
| 28 | #define get_byte_0 lsl #0 | ||
| 29 | #define get_byte_1 lsr #8 | ||
| 30 | #define get_byte_2 lsr #16 | ||
| 31 | #define get_byte_3 lsr #24 | ||
| 32 | #define put_byte_0 lsl #0 | ||
| 33 | #define put_byte_1 lsl #8 | ||
| 34 | #define put_byte_2 lsl #16 | ||
| 35 | #define put_byte_3 lsl #24 | ||
| 36 | #else | ||
| 37 | #define pull lsl | ||
| 38 | #define push lsr | ||
| 39 | #define get_byte_0 lsr #24 | ||
| 40 | #define get_byte_1 lsr #16 | ||
| 41 | #define get_byte_2 lsr #8 | ||
| 42 | #define get_byte_3 lsl #0 | ||
| 43 | #define put_byte_0 lsl #24 | ||
| 44 | #define put_byte_1 lsl #16 | ||
| 45 | #define put_byte_2 lsl #8 | ||
| 46 | #define put_byte_3 lsl #0 | ||
| 47 | #endif | ||
| 48 | |||
| 49 | /* | ||
| 50 | * Data preload for architectures that support it | ||
| 51 | */ | ||
| 52 | #if __LINUX_ARM_ARCH__ >= 5 | ||
| 53 | #define PLD(code...) code | ||
| 54 | #else | ||
| 55 | #define PLD(code...) | ||
| 56 | #endif | ||
| 57 | |||
| 58 | /* | ||
| 59 | * This can be used to enable code to cacheline align the destination | ||
| 60 | * pointer when bulk writing to memory. Experiments on StrongARM and | ||
| 61 | * XScale didn't show this a worthwhile thing to do when the cache is not | ||
| 62 | * set to write-allocate (this would need further testing on XScale when WA | ||
| 63 | * is used). | ||
| 64 | * | ||
| 65 | * On Feroceon there is much to gain however, regardless of cache mode. | ||
| 66 | */ | ||
| 67 | #ifdef CONFIG_CPU_FEROCEON | ||
| 68 | #define CALGN(code...) code | ||
| 69 | #else | ||
| 70 | #define CALGN(code...) | ||
| 71 | #endif | ||
| 72 | |||
| 73 | /* | ||
| 74 | * Enable and disable interrupts | ||
| 75 | */ | ||
| 76 | #if __LINUX_ARM_ARCH__ >= 6 | ||
| 77 | .macro disable_irq | ||
| 78 | cpsid i | ||
| 79 | .endm | ||
| 80 | |||
| 81 | .macro enable_irq | ||
| 82 | cpsie i | ||
| 83 | .endm | ||
| 84 | #else | ||
| 85 | .macro disable_irq | ||
| 86 | msr cpsr_c, #PSR_I_BIT | SVC_MODE | ||
| 87 | .endm | ||
| 88 | |||
| 89 | .macro enable_irq | ||
| 90 | msr cpsr_c, #SVC_MODE | ||
| 91 | .endm | ||
| 92 | #endif | ||
| 93 | |||
| 94 | /* | ||
| 95 | * Save the current IRQ state and disable IRQs. Note that this macro | ||
| 96 | * assumes FIQs are enabled, and that the processor is in SVC mode. | ||
| 97 | */ | ||
| 98 | .macro save_and_disable_irqs, oldcpsr | ||
| 99 | mrs \oldcpsr, cpsr | ||
| 100 | disable_irq | ||
| 101 | .endm | ||
| 102 | |||
| 103 | /* | ||
| 104 | * Restore interrupt state previously stored in a register. We don't | ||
| 105 | * guarantee that this will preserve the flags. | ||
| 106 | */ | ||
| 107 | .macro restore_irqs, oldcpsr | ||
| 108 | msr cpsr_c, \oldcpsr | ||
| 109 | .endm | ||
| 110 | |||
| 111 | #define USER(x...) \ | ||
| 112 | 9999: x; \ | ||
| 113 | .section __ex_table,"a"; \ | ||
| 114 | .align 3; \ | ||
| 115 | .long 9999b,9001f; \ | ||
| 116 | .previous | ||
