2 * linux/include/asm-arm/assembler.h
4 * Copyright (C) 1996-2000 Russell King
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.
10 * This file contains arm architecture specific defines
11 * for the different processors.
13 * Do not include any C declarations in this file - it is included by
17 #error "Only include this from assembly code"
20 #include <asm/ptrace.h>
23 * Endian independent macros for shifting bytes within registers.
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
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
50 * Data preload for architectures that support it
52 #if __LINUX_ARM_ARCH__ >= 5
53 #define PLD(code...) code
59 * Enable and disable interrupts
61 #if __LINUX_ARM_ARCH__ >= 6
71 msr cpsr_c, #PSR_I_BIT | SVC_MODE
80 * Save the current IRQ state and disable IRQs. Note that this macro
81 * assumes FIQs are enabled, and that the processor is in SVC mode.
83 .macro save_and_disable_irqs, oldcpsr
89 * Restore interrupt state previously stored in a register. We don't
90 * guarantee that this will preserve the flags.
92 .macro restore_irqs, oldcpsr
98 .section __ex_table,"a"; \