[258] | 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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[259] | 50 | #define SYSCALL_FAT_WRITE 0x22 |
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| 51 | #define SYSCALL_FAT_LSEEK 0x23 |
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[260] | 52 | #define SYSCALL_FAT_FSTAT 0x24 |
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| 53 | #define SYSCALL_FAT_CLOSE 0x25 |
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[258] | 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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[260] | 185 | extern int giet_fat_fstat( unsigned int fd ); |
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| 186 | |
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[258] | 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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