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 | * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and |
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10 | * Bernd Becker (becker@faw.uni-ulm.de) |
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11 | * |
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12 | * NOTE: The spacing in the use of these macros |
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13 | * is critical to them working as advertised. |
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14 | * |
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15 | * COPYRIGHT: |
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16 | * |
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17 | * This file is based on similar code found in newlib available |
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18 | * from ftp.cygnus.com. The file which was used had no copyright |
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19 | * notice. This file is freely distributable as long as the source |
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20 | * of the file is noted. This file is: |
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21 | * |
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22 | * |
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23 | * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany |
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24 | * |
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25 | * This program is distributed in the hope that it will be useful, |
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26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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28 | * |
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29 | * |
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30 | * COPYRIGHT (c) 1998. |
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31 | * On-Line Applications Research Corporation (OAR). |
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32 | * Copyright assigned to U.S. Government, 1994. |
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33 | * |
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34 | * The license and distribution terms for this file may be |
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35 | * found in the file LICENSE in this distribution or at |
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36 | * http://www.OARcorp.com/rtems/license.html. |
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37 | * |
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38 | * $Id$ |
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39 | */ |
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40 | |
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41 | #ifndef __CPU_SH_ASM_h |
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42 | #define __CPU_SH_ASM_h |
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43 | |
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44 | /* |
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45 | * Indicate we are in an assembly file and get the basic CPU definitions. |
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46 | */ |
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47 | |
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48 | #ifndef ASM |
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49 | #define ASM |
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50 | #endif |
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51 | |
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52 | #include <rtems/score/cpuopts.h> |
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53 | #include <rtems/score/sh.h> |
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54 | |
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55 | /* |
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56 | * Recent versions of GNU cpp define variables which indicate the |
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57 | * need for underscores and percents. If not using GNU cpp or |
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58 | * the version does not support this, then you will obviously |
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59 | * have to define these as appropriate. |
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60 | */ |
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61 | |
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62 | #ifndef __USER_LABEL_PREFIX__ |
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63 | #define __USER_LABEL_PREFIX__ _ |
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64 | #endif |
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65 | |
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66 | #ifndef __REGISTER_PREFIX__ |
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67 | #define __REGISTER_PREFIX__ |
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68 | #endif |
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69 | |
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70 | /* ANSI concatenation macros. */ |
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71 | |
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72 | #define CONCAT1(a, b) CONCAT2(a, b) |
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73 | #define CONCAT2(a, b) a ## b |
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74 | |
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75 | /* Use the right prefix for global labels. */ |
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76 | |
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77 | #define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) |
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78 | |
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79 | /* Use the right prefix for registers. */ |
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80 | |
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81 | #define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) |
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82 | |
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83 | /* |
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84 | * define macros for all of the registers on this CPU |
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85 | * |
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86 | * EXAMPLE: #define d0 REG (d0) |
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87 | */ |
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88 | #define r0 REG (r0) |
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89 | #define r1 REG (r1) |
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90 | #define r2 REG (r2) |
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91 | #define r3 REG (r3) |
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92 | #define r4 REG (r4) |
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93 | #define r5 REG (r5) |
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94 | #define r6 REG (r6) |
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95 | #define r7 REG (r7) |
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96 | #define r8 REG (r8) |
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97 | #define r9 REG (r9) |
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98 | #define r10 REG (r10) |
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99 | #define r11 REG (r11) |
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100 | #define r12 REG (r12) |
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101 | #define r13 REG (r13) |
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102 | #define r14 REG (r14) |
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103 | #define r15 REG (r15) |
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104 | #define vbr REG (vbr) |
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105 | #define gbr REG (gbr) |
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106 | #define pr REG (pr) |
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107 | #define mach REG (mach) |
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108 | #define macl REG (macl) |
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109 | #define sr REG (sr) |
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110 | #define pc REG (pc) |
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111 | |
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112 | /* |
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113 | * Define macros to handle section beginning and ends. |
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114 | */ |
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115 | |
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116 | |
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117 | #define BEGIN_CODE_DCL .text |
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118 | #define END_CODE_DCL |
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119 | #define BEGIN_DATA_DCL .data |
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120 | #define END_DATA_DCL |
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121 | #define BEGIN_CODE .text |
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122 | #define END_CODE |
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123 | #define BEGIN_DATA |
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124 | #define END_DATA |
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125 | #define BEGIN_BSS |
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126 | #define END_BSS |
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127 | #define END |
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128 | |
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129 | /* |
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130 | * Following must be tailor for a particular flavor of the C compiler. |
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131 | * They may need to put underscores in front of the symbols. |
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132 | */ |
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133 | |
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134 | #define PUBLIC(sym) .global SYM (sym) |
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135 | #define EXTERN(sym) .global SYM (sym) |
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136 | |
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137 | #endif |
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