Last change
on this file since 498 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
2.3 KB
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Line | |
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1 | # xstormy16 system calls for the simulator |
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2 | |
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3 | #include <syscall.h> |
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4 | |
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5 | .text |
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6 | |
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7 | .globl _exit |
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8 | _exit: |
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9 | mov r1,#SYS_exit |
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10 | .hword 0x0001 |
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11 | bnz r1,#0,syscall_error |
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12 | ret |
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13 | 0: .size exit,0b-_exit |
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14 | |
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15 | .globl _open |
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16 | _open: |
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17 | mov r1,#SYS_open |
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18 | .hword 0x0001 |
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19 | bnz r1,#0,syscall_error |
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20 | ret |
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21 | 0: .size open,0b-_open |
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22 | |
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23 | .globl _close |
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24 | _close: |
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25 | mov r1,#SYS_close |
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26 | .hword 0x0001 |
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27 | bnz r1,#0,syscall_error |
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28 | ret |
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29 | 0: .size close,0b-_close |
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30 | |
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31 | .globl _read |
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32 | _read: |
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33 | mov r1,#SYS_read |
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34 | .hword 0x0001 |
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35 | bnz r1,#0,syscall_error |
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36 | ret |
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37 | 0: .size read,0b-_read |
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38 | |
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39 | .globl _write |
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40 | _write: |
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41 | mov r1,#SYS_write |
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42 | .hword 0x0001 |
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43 | bnz r1,#0,syscall_error |
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44 | ret |
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45 | 0: .size write,0b-_write |
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46 | |
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47 | .globl _lseek |
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48 | _lseek: |
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49 | mov r1,#SYS_lseek |
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50 | .hword 0x0001 |
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51 | bnz r1,#0,syscall_error |
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52 | ret |
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53 | 0: .size lseek,0b-_lseek |
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54 | |
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55 | .globl _unlink |
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56 | _unlink: |
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57 | mov r1,#SYS_unlink |
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58 | .hword 0x0001 |
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59 | bnz r1,#0,syscall_error |
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60 | ret |
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61 | 0: .size unlink,0b-_unlink |
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62 | |
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63 | .globl _getpid |
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64 | _getpid: |
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65 | mov r1,#SYS_getpid |
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66 | .hword 0x0001 |
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67 | bnz r1,#0,syscall_error |
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68 | ret |
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69 | 0: .size getpid,0b-_getpid |
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70 | |
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71 | .globl _kill |
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72 | _kill: |
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73 | mov r1,#SYS_kill |
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74 | .hword 0x0001 |
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75 | bnz r1,#0,syscall_error |
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76 | ret |
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77 | 0: .size kill,0b-_kill |
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78 | |
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79 | .globl _fstat |
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80 | _fstat: |
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81 | mov r1,#SYS_fstat |
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82 | .hword 0x0001 |
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83 | bnz r1,#0,syscall_error |
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84 | ret |
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85 | 0: .size fstat,0b-_fstat |
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86 | |
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87 | .globl _chdir |
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88 | _chdir: |
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89 | mov r1,#SYS_chdir |
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90 | .hword 0x0001 |
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91 | bnz r1,#0,syscall_error |
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92 | ret |
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93 | 0: .size chdir,0b-_chdir |
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94 | |
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95 | .globl _stat |
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96 | _stat: |
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97 | mov r1,#SYS_stat |
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98 | .hword 0x0001 |
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99 | bnz r1,#0,syscall_error |
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100 | ret |
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101 | 0: .size stat,0b-_stat |
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102 | |
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103 | .globl _chmod |
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104 | _chmod: |
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105 | mov r1,#SYS_chmod |
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106 | .hword 0x0001 |
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107 | bnz r1,#0,syscall_error |
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108 | ret |
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109 | 0: .size chmod,0b-_chmod |
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110 | |
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111 | .globl _utime |
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112 | _utime: |
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113 | mov r1,#SYS_utime |
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114 | .hword 0x0001 |
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115 | bnz r1,#0,syscall_error |
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116 | ret |
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117 | 0: .size utime,0b-_utime |
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118 | |
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119 | .globl _time |
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120 | _time: |
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121 | mov r1,#SYS_time |
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122 | .hword 0x0001 |
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123 | bnz r1,#0,syscall_error |
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124 | ret |
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125 | 0: .size time,0b-_time |
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126 | |
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127 | .globl _gettimeofday |
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128 | _gettimeofday: |
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129 | mov r1,#SYS_gettimeofday |
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130 | .hword 0x0001 |
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131 | bnz r1,#0,syscall_error |
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132 | ret |
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133 | 0: .size gettimeofday,0b-_gettimeofday |
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134 | |
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135 | .globl _times |
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136 | _times: |
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137 | mov r1,#SYS_times |
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138 | .hword 0x0001 |
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139 | bnz r1,#0,syscall_error |
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140 | ret |
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141 | 0: .size times,0b-_times |
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142 | |
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143 | .globl _link |
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144 | _link: |
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145 | mov r1,#SYS_link |
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146 | .hword 0x0001 |
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147 | bnz r1,#0,syscall_error |
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148 | ret |
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149 | 0: .size link,0b-_link |
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150 | |
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151 | syscall_error: |
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152 | # Return value for the syscall is in r2. Save it here, as |
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153 | # _errno will overwrite it with the address of the errno |
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154 | # variable. r0 is the errno. |
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155 | push r2 |
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156 | push r0 |
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157 | callf __errno |
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158 | pop r0 |
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159 | mov.w (r2),r0 |
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160 | pop r2 |
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161 | ret |
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162 | 0: .size syscall_error,0b-syscall_error |
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