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 17 #include <asm/unified.h> 18 19 /* 20 * Endian independent macros for shifting bytes within registers. 21 */ 22 #ifndef __ARMEB__ 23 #define lspull lsr 24 #define lspush lsl 25 #define get_byte_0 lsl #0 26 #define get_byte_1 lsr #8 27 #define get_byte_2 lsr #16 28 #define get_byte_3 lsr #24 29 #define put_byte_0 lsl #0 30 #define put_byte_1 lsl #8 31 #define put_byte_2 lsl #16 32 #define put_byte_3 lsl #24 33 #else 34 #define lspull lsl 35 #define lspush lsr 36 #define get_byte_0 lsr #24 37 #define get_byte_1 lsr #16 38 #define get_byte_2 lsr #8 39 #define get_byte_3 lsl #0 40 #define put_byte_0 lsl #24 41 #define put_byte_1 lsl #16 42 #define put_byte_2 lsl #8 43 #define put_byte_3 lsl #0 44 #endif 45 46 /* 47 * Data preload for architectures that support it 48 */ 49 #if defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || \ 50 defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \ 51 defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || \ 52 defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_7A__) || \ 53 defined(__ARM_ARCH_7R__) 54 #define PLD(code...) code 55 #else 56 #define PLD(code...) 57 #endif 58 59 /* 60 * Use 'bx lr' everywhere except ARMv4 (without 'T') where only 'mov pc, lr' 61 * works 62 */ 63 .irp c,,eq,ne,cs,cc,mi,pl,vs,vc,hi,ls,ge,lt,gt,le,hs,lo 64 .macro ret\c, reg 65 66 /* ARMv4- don't know bx lr but the assembler fails to see that */ 67 #ifdef __ARM_ARCH_4__ 68 mov\c pc, \reg 69 #else 70 .ifeqs "\reg", "lr" 71 bx\c \reg 72 .else 73 mov\c pc, \reg 74 .endif 75 #endif 76 .endm 77 .endr 78 79 /* 80 * Cache aligned, used for optimized memcpy/memset 81 * In the kernel this is only enabled for Feroceon CPU's... 82 * We disable it especially for Thumb builds since those instructions 83 * are not made in a Thumb ready way... 84 */ 85 #if CONFIG_IS_ENABLED(SYS_THUMB_BUILD) 86 #define CALGN(code...) 87 #else 88 #define CALGN(code...) code 89 #endif 90