1 | ////////////////////////////////////////////////////////////////////////////////// |
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2 | // File : stdio.h |
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3 | // Date : 01/04/2010 |
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4 | // Author : alain greiner & Joel Porquet |
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5 | // Copyright (c) UPMC-LIP6 |
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6 | /////////////////////////////////////////////////////////////////////////////////// |
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7 | |
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8 | #ifndef _STDIO_H |
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9 | #define _STDIO_H |
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10 | |
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11 | // These define must be synchronised with |
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12 | // the _syscall_vector defined in file sys_handler.c |
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13 | |
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14 | #define SYSCALL_PROCID 0x00 |
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15 | #define SYSCALL_PROCTIME 0x01 |
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16 | #define SYSCALL_TTY_WRITE 0x02 |
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17 | #define SYSCALL_TTY_READ 0x03 |
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18 | #define SYSCALL_TIMER_START 0x04 |
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19 | #define SYSCALL_TIMER_STOP 0x05 |
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20 | #define SYSCALL_FREE_06 0x06 |
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21 | #define SYSCALL_FREE_07 0x07 |
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22 | #define SYSCALL_HEAP_INFO 0x08 |
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23 | #define SYSCALL_LOCAL_TASK_ID 0x09 |
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24 | #define SYSCALL_GLOBAL_TASK_ID 0x0A |
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25 | #define SYSCALL_FB_CMA_INIT 0x0B |
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26 | #define SYSCALL_FB_CMA_WRITE 0x0C |
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27 | #define SYSCALL_FB_CMA_STOP 0x0D |
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28 | #define SYSCALL_EXIT 0x0E |
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29 | #define SYSCALL_PROC_NUMBER 0x0F |
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30 | |
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31 | #define SYSCALL_FB_SYNC_WRITE 0x10 |
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32 | #define SYSCALL_FB_SYNC_READ 0x11 |
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33 | #define SYSCALL_FREE_12 0x12 |
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34 | #define SYSCALL_FREE_13 0x13 |
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35 | #define SYSCALL_FREE_14 0x14 |
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36 | #define SYSCALL_FREE_15 0x15 |
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37 | #define SYSCALL_FREE_16 0x16 |
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38 | #define SYSCALL_FREE_17 0x17 |
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39 | #define SYSCALL_FREE_18 0x18 |
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40 | #define SYSCALL_CTX_SWITCH 0x19 |
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41 | #define SYSCALL_VOBJ_GET_VBASE 0x1A |
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42 | #define SYSCALL_FREE_1B 0x1B |
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43 | #define SYSCALL_NIC_CMA_START 0x1C |
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44 | #define SYSCALL_NIC_CMA_STOP 0x1D |
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45 | #define SYSCALL_NIC_SYNC_READ 0x1E |
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46 | #define SYSCALL_NIC_SYNC_WRITE 0x1F |
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47 | |
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48 | #define SYSCALL_FAT_OPEN 0x20 |
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49 | #define SYSCALL_FAT_READ 0x21 |
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50 | #define SYSCALL_FAT_WRITE 0x22 |
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51 | #define SYSCALL_FAT_LSEEK 0x23 |
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52 | #define SYSCALL_FAT_FSTAT 0x24 |
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53 | #define SYSCALL_FAT_CLOSE 0x25 |
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54 | |
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55 | ////////////////////////////////////////////////////////////////////////////////// |
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56 | // This generic C function is used to implement all system calls. |
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57 | // It writes the system call arguments in the proper registers, |
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58 | // and tells GCC what has been modified by system call execution. |
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59 | ////////////////////////////////////////////////////////////////////////////////// |
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60 | static inline int sys_call( int call_no, |
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61 | int arg_0, |
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62 | int arg_1, |
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63 | int arg_2, |
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64 | int arg_3 ) |
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65 | { |
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66 | register int reg_no_and_output asm("v0") = call_no; |
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67 | register int reg_a0 asm("a0") = arg_0; |
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68 | register int reg_a1 asm("a1") = arg_1; |
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69 | register int reg_a2 asm("a2") = arg_2; |
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70 | register int reg_a3 asm("a3") = arg_3; |
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71 | |
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72 | asm volatile( |
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73 | "syscall" |
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74 | : "=r" (reg_no_and_output) /* output argument */ |
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75 | : "r" (reg_a0), /* input arguments */ |
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76 | "r" (reg_a1), |
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77 | "r" (reg_a2), |
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78 | "r" (reg_a3), |
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79 | "r" (reg_no_and_output) |
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80 | : "memory", |
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81 | /* These persistant registers will be saved on the stack by the |
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82 | * compiler only if they contain relevant data. */ |
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83 | "at", |
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84 | "v1", |
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85 | "ra", |
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86 | "t0", |
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87 | "t1", |
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88 | "t2", |
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89 | "t3", |
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90 | "t4", |
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91 | "t5", |
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92 | "t6", |
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93 | "t7", |
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94 | "t8", |
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95 | "t9" |
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96 | ); |
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97 | return reg_no_and_output; |
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98 | } |
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99 | |
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100 | ////////////////////////////////////////////////////////////////////////// |
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101 | // MIPS32 related system calls |
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102 | ////////////////////////////////////////////////////////////////////////// |
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103 | |
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104 | extern int giet_procid(); |
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105 | |
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106 | extern int giet_proctime(); |
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107 | |
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108 | ////////////////////////////////////////////////////////////////////////// |
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109 | // TTY device related system calls |
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110 | ////////////////////////////////////////////////////////////////////////// |
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111 | |
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112 | extern int giet_tty_putc(char byte); |
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113 | |
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114 | extern int giet_tty_puts(char* buf); |
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115 | |
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116 | extern int giet_tty_putw(unsigned int val); |
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117 | |
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118 | extern int giet_tty_getc_no_irq(char* byte); |
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119 | |
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120 | extern int giet_tty_getc(char* byte); |
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121 | |
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122 | extern int giet_tty_gets(char* buf, unsigned int bufsize); |
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123 | |
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124 | extern int giet_tty_getw(unsigned int* val); |
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125 | |
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126 | extern int giet_tty_printf(char* format,...); |
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127 | |
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128 | ////////////////////////////////////////////////////////////////////////// |
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129 | // TIMER device related system calls |
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130 | ////////////////////////////////////////////////////////////////////////// |
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131 | |
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132 | extern int giet_timer_start(); |
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133 | |
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134 | extern int giet_timer_stop(); |
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135 | |
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136 | ////////////////////////////////////////////////////////////////////////// |
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137 | // Frame buffer device related system calls |
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138 | ////////////////////////////////////////////////////////////////////////// |
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139 | |
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140 | extern int giet_fb_sync_read( unsigned int offset, |
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141 | void* buffer, |
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142 | unsigned int length ); |
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143 | |
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144 | extern int giet_fb_sync_write(unsigned int offset, |
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145 | void* buffer, |
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146 | unsigned int length); |
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147 | |
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148 | extern int giet_fb_cma_init( void* buf0, |
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149 | void* buf1, |
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150 | unsigned int length); |
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151 | |
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152 | extern int giet_fb_cma_write(unsigned int buf_id); |
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153 | |
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154 | extern int giet_fb_cma_stop(); |
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155 | |
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156 | ////////////////////////////////////////////////////////////////////////// |
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157 | // Network controller related system calls |
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158 | ////////////////////////////////////////////////////////////////////////// |
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159 | |
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160 | extern int giet_nic_cma_start(); |
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161 | |
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162 | extern int giet_nic_cma_stop(); |
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163 | |
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164 | ////////////////////////////////////////////////////////////////////////// |
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165 | // FAT related system calls |
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166 | ////////////////////////////////////////////////////////////////////////// |
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167 | |
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168 | extern int giet_fat_open( const char* pathname, |
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169 | unsigned int flags ); |
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170 | |
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171 | extern int giet_fat_read( unsigned int fd, |
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172 | void* buffer, |
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173 | unsigned int count, |
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174 | unsigned int offset ); |
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175 | |
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176 | extern int giet_fat_write( unsigned int fd, |
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177 | void* buffer, |
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178 | unsigned int count, |
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179 | unsigned int offset ); |
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180 | |
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181 | extern int giet_fat_lseek( unsigned int fd, |
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182 | unsigned int offset, |
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183 | unsigned int whence ); |
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184 | |
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185 | extern int giet_fat_fstat( unsigned int fd ); |
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186 | |
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187 | extern int giet_fat_close( unsigned int fd ); |
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188 | |
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189 | ////////////////////////////////////////////////////////////////////////// |
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190 | // Miscelaneous system calls |
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191 | ////////////////////////////////////////////////////////////////////////// |
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192 | |
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193 | extern int giet_vobj_get_vbase( char* vspace_name, |
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194 | char* vobj_name, |
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195 | unsigned int vobj_type, |
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196 | unsigned int* vobj_vaddr); |
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197 | |
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198 | extern int giet_procnumber(); |
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199 | |
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200 | extern void giet_exit(); |
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201 | |
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202 | extern int giet_context_switch(); |
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203 | |
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204 | extern int giet_proc_task_id(); |
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205 | |
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206 | extern int giet_heap_info( unsigned int* vaddr, |
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207 | unsigned int* size ); |
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208 | |
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209 | extern int giet_global_task_id(); |
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210 | |
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211 | extern void giet_assert( unsigned int, |
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212 | char* string ); |
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213 | |
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214 | extern int giet_rand(); |
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215 | |
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216 | #endif |
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217 | |
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218 | // Local Variables: |
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219 | // tab-width: 4 |
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220 | // c-basic-offset: 4 |
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221 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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222 | // indent-tabs-mode: nil |
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223 | // End: |
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224 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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225 | |
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