1 | /* asm.h |
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2 | * |
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3 | * This include file attempts to address the problems |
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4 | * caused by incompatible flavors of assemblers and |
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5 | * toolsets. It primarily addresses variations in the |
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6 | * use of leading underscores on symbols and the requirement |
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7 | * that register names be preceded by a %. |
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8 | * |
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9 | * |
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10 | * NOTE: The spacing in the use of these macros |
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11 | * is critical to them working as advertised. |
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12 | * |
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13 | * COPYRIGHT: |
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14 | * |
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15 | * This file is based on similar code found in newlib available |
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16 | * from ftp.cygnus.com. The file which was used had no copyright |
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17 | * notice. This file is freely distributable as long as the source |
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18 | * of the file is noted. This file is: |
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19 | * |
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20 | * COPYRIGHT (c) 1994-1997. |
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21 | * On-Line Applications Research Corporation (OAR). |
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22 | * |
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23 | * $Id$ |
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24 | */ |
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25 | |
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26 | #ifndef __M68k_ASM_h |
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27 | #define __M68k_ASM_h |
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28 | |
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29 | /* |
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30 | * Indicate we are in an assembly file and get the basic CPU definitions. |
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31 | */ |
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32 | |
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33 | #ifndef ASM |
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34 | #define ASM |
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35 | #endif |
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36 | #include <rtems/score/cpuopts.h> |
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37 | #include <rtems/score/cpu.h> |
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38 | |
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39 | /* |
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40 | * Recent versions of GNU cpp define variables which indicate the |
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41 | * need for underscores and percents. If not using GNU cpp or |
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42 | * the version does not support this, then you will obviously |
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43 | * have to define these as appropriate. |
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44 | */ |
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45 | |
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46 | #ifndef __USER_LABEL_PREFIX__ |
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47 | #define __USER_LABEL_PREFIX__ _ |
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48 | #endif |
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49 | |
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50 | #ifndef __REGISTER_PREFIX__ |
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51 | #define __REGISTER_PREFIX__ |
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52 | #endif |
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53 | |
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54 | /* ANSI concatenation macros. */ |
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55 | |
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56 | #define CONCAT1(a, b) CONCAT2(a, b) |
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57 | #define CONCAT2(a, b) a ## b |
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58 | |
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59 | /* Use the right prefix for global labels. */ |
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60 | |
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61 | #define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) |
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62 | |
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63 | /* Use the right prefix for registers. */ |
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64 | |
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65 | #define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) |
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66 | |
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67 | #define d0 REG (d0) |
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68 | #define d1 REG (d1) |
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69 | #define d2 REG (d2) |
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70 | #define d3 REG (d3) |
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71 | #define d4 REG (d4) |
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72 | #define d5 REG (d5) |
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73 | #define d6 REG (d6) |
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74 | #define d7 REG (d7) |
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75 | #define a0 REG (a0) |
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76 | #define a1 REG (a1) |
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77 | #define a2 REG (a2) |
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78 | #define a3 REG (a3) |
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79 | #define a4 REG (a4) |
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80 | #define a5 REG (a5) |
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81 | #define a6 REG (a6) |
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82 | #define a7 REG (a7) |
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83 | #define sp REG (sp) |
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84 | |
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85 | #define msp REG (msp) |
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86 | #define usp REG (usp) |
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87 | #define isp REG (isp) |
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88 | #define sr REG (sr) |
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89 | #define vbr REG (vbr) |
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90 | #define dfc REG (dfc) |
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91 | #define sfc REG (sfc) |
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92 | |
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93 | /* mcf52xx special regs */ |
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94 | #define cacr REG (cacr) |
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95 | #define acr0 REG (acr0) |
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96 | #define acr1 REG (acr1) |
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97 | #define rambar0 REG (rambar0) |
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98 | #define mbar REG (mbar) |
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99 | |
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100 | |
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101 | #define fp0 REG (fp0) |
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102 | #define fp1 REG (fp1) |
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103 | #define fp2 REG (fp2) |
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104 | #define fp3 REG (fp3) |
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105 | #define fp4 REG (fp4) |
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106 | #define fp5 REG (fp5) |
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107 | #define fp6 REG (fp6) |
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108 | #define fp7 REG (fp7) |
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109 | |
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110 | #define fpc REG (fpc) |
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111 | #define fpi REG (fpi) |
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112 | #define fps REG (fps) |
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113 | #define fpsr REG (fpsr) |
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114 | |
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115 | |
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116 | /* |
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117 | * Define macros to handle section beginning and ends. |
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118 | */ |
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119 | |
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120 | |
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121 | #define BEGIN_CODE_DCL .text |
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122 | #define END_CODE_DCL |
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123 | #define BEGIN_DATA_DCL .data |
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124 | #define END_DATA_DCL |
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125 | #define BEGIN_CODE .text |
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126 | #define END_CODE |
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127 | #define BEGIN_DATA .data |
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128 | #define END_DATA |
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129 | #define BEGIN_BSS .bss |
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130 | #define END_BSS |
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131 | #define END |
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132 | |
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133 | /* |
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134 | * Following must be tailor for a particular flavor of the C compiler. |
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135 | * They may need to put underscores in front of the symbols. |
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136 | */ |
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137 | |
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138 | #define PUBLIC(sym) .globl SYM (sym) |
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139 | #define EXTERN(sym) .globl SYM (sym) |
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140 | |
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141 | #endif |
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142 | /* end of include file */ |
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143 | |
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144 | |
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