arch/arm/include/asm/unified.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * include/asm-arm/unified.h - Unified Assembler Syntax helper macros
   4  *
   5  * Copyright (C) 2008 ARM Limited
   6  */
   7
   8 #ifndef __ASM_UNIFIED_H
   9 #define __ASM_UNIFIED_H
  10
  11 #if defined(__ASSEMBLY__) && defined(CONFIG_ARM_ASM_UNIFIED)
  12         .syntax unified
  13 #endif
  14
  15 #ifdef CONFIG_CPU_V7M
  16 #define AR_CLASS(x...)
  17 #define M_CLASS(x...)   x
  18 #else
  19 #define AR_CLASS(x...)  x
  20 #define M_CLASS(x...)
  21 #endif
  22
  23 #ifdef CONFIG_THUMB2_KERNEL
  24
  25 #if __GNUC__ < 4
  26 #error Thumb-2 kernel requires gcc >= 4
  27 #endif
  28
  29 /* The CPSR bit describing the instruction set (Thumb) */
  30 #define PSR_ISETSTATE   PSR_T_BIT
  31
  32 #define ARM(x...)
  33 #define THUMB(x...)     x
  34 #ifdef __ASSEMBLY__
  35 #define W(instr)        instr.w
  36 #else
  37 #define WASM(instr)     #instr ".w"
  38 #endif
  39
  40 #else   /* !CONFIG_THUMB2_KERNEL */
  41
  42 /* The CPSR bit describing the instruction set (ARM) */
  43 #define PSR_ISETSTATE   0
  44
  45 #define ARM(x...)       x
  46 #define THUMB(x...)
  47 #ifdef __ASSEMBLY__
  48 #define W(instr)        instr
  49 #else
  50 #define WASM(instr)     #instr
  51 #endif
  52
  53 #endif  /* CONFIG_THUMB2_KERNEL */
  54
  55 #ifndef CONFIG_ARM_ASM_UNIFIED
  56
  57 /*
  58  * If the unified assembly syntax isn't used (in ARM mode), these
  59  * macros expand to an empty string
  60  */
  61 #ifdef __ASSEMBLY__
  62         .macro  it, cond
  63         .endm
  64         .macro  itt, cond
  65         .endm
  66         .macro  ite, cond
  67         .endm
  68         .macro  ittt, cond
  69         .endm
  70         .macro  itte, cond
  71         .endm
  72         .macro  itet, cond
  73         .endm
  74         .macro  itee, cond
  75         .endm
  76         .macro  itttt, cond
  77         .endm
  78         .macro  ittte, cond
  79         .endm
  80         .macro  ittet, cond
  81         .endm
  82         .macro  ittee, cond
  83         .endm
  84         .macro  itett, cond
  85         .endm
  86         .macro  itete, cond
  87         .endm
  88         .macro  iteet, cond
  89         .endm
  90         .macro  iteee, cond
  91         .endm
  92 #else   /* !__ASSEMBLY__ */
  93 __asm__(
  94 "       .macro  it, cond\n"
  95 "       .endm\n"
  96 "       .macro  itt, cond\n"
  97 "       .endm\n"
  98 "       .macro  ite, cond\n"
  99 "       .endm\n"
 100 "       .macro  ittt, cond\n"
 101 "       .endm\n"
 102 "       .macro  itte, cond\n"
 103 "       .endm\n"
 104 "       .macro  itet, cond\n"
 105 "       .endm\n"
 106 "       .macro  itee, cond\n"
 107 "       .endm\n"
 108 "       .macro  itttt, cond\n"
 109 "       .endm\n"
 110 "       .macro  ittte, cond\n"
 111 "       .endm\n"
 112 "       .macro  ittet, cond\n"
 113 "       .endm\n"
 114 "       .macro  ittee, cond\n"
 115 "       .endm\n"
 116 "       .macro  itett, cond\n"
 117 "       .endm\n"
 118 "       .macro  itete, cond\n"
 119 "       .endm\n"
 120 "       .macro  iteet, cond\n"
 121 "       .endm\n"
 122 "       .macro  iteee, cond\n"
 123 "       .endm\n");
 124 #endif  /* __ASSEMBLY__ */
 125
 126 #endif  /* CONFIG_ARM_ASM_UNIFIED */
 127
 128 #endif  /* !__ASM_UNIFIED_H */