[caf88699] | 1 | /* Support files for newlib/GDB simulator. |
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| 2 | * $Id$ |
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| 3 | */ |
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| 4 | |
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| 5 | #include <_ansi.h> |
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| 6 | #include <sys/types.h> |
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| 7 | #include <sys/stat.h> |
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| 8 | #include <sys/fcntl.h> |
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| 9 | #include <stdio.h> |
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| 10 | #include <time.h> |
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| 11 | #include <sys/time.h> |
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| 12 | #include <sys/times.h> |
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| 13 | #include <errno.h> |
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| 14 | #include <reent.h> |
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| 15 | #include "swi.h" |
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| 16 | |
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| 17 | int armulator_stdin; |
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| 18 | int armulator_stdout; |
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| 19 | int armulator_stderr; |
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| 20 | |
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| 21 | #ifdef ARM_RDI_MONITOR |
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| 22 | |
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| 23 | static inline int |
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| 24 | do_AngelSWI (int reason, void * arg) |
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| 25 | { |
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| 26 | int value; |
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| 27 | asm volatile ("mov r0, %1; mov r1, %2; swi %a3; mov %0, r0" |
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| 28 | : "=r" (value) /* Outputs */ |
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| 29 | : "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */ |
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| 30 | : "r0", "r1", "lr" |
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| 31 | /* Clobbers r0 and r1, and lr if in supervisor mode */); |
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| 32 | return value; |
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| 33 | } |
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| 34 | #endif /* ARM_RDI_MONITOR */ |
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| 35 | |
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| 36 | void |
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| 37 | initialize_monitor_handles (void) |
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| 38 | { |
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| 39 | #ifdef ARM_RDI_MONITOR |
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| 40 | int volatile block[3]; |
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| 41 | |
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| 42 | block[0] = (int) ":tt"; |
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| 43 | block[2] = 3; /* length of filename */ |
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| 44 | block[1] = 0; /* mode "r" */ |
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[1668178] | 45 | armulator_stdin = do_AngelSWI (AngelSWI_Reason_Open, (void *)block); |
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[caf88699] | 46 | |
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| 47 | block[0] = (int) ":tt"; |
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| 48 | block[2] = 3; /* length of filename */ |
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| 49 | block[1] = 4; /* mode "w" */ |
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[1668178] | 50 | armulator_stdout = armulator_stderr = do_AngelSWI (AngelSWI_Reason_Open, (void *)block); |
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[caf88699] | 51 | #else |
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| 52 | int fh; |
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| 53 | const char * name; |
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| 54 | |
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| 55 | name = ":tt"; |
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| 56 | asm ("mov r0,%2; mov r1, #0; swi %a1; mov %0, r0" |
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| 57 | : "=r"(fh) |
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| 58 | : "i" (SWI_Open),"r"(name) |
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| 59 | : "r0","r1"); |
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| 60 | armulator_stdin = fh; |
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| 61 | |
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| 62 | name = ":tt"; |
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| 63 | asm ("mov r0,%2; mov r1, #4; swi %a1; mov %0, r0" |
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| 64 | : "=r"(fh) |
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| 65 | : "i" (SWI_Open),"r"(name) |
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| 66 | : "r0","r1"); |
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| 67 | armulator_stdout = armulator_stderr = fh; |
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| 68 | #endif |
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| 69 | } |
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| 70 | |
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| 71 | /* Returns # chars not! read */ |
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| 72 | |
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| 73 | int |
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| 74 | _swiread (int file, |
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| 75 | char * ptr, |
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| 76 | int len) |
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| 77 | { |
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| 78 | int fh = file; |
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| 79 | #ifdef ARM_RDI_MONITOR |
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| 80 | int block[3]; |
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| 81 | |
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| 82 | block[0] = fh; |
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| 83 | block[1] = (int) ptr; |
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| 84 | block[2] = len; |
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| 85 | |
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| 86 | return do_AngelSWI (AngelSWI_Reason_Read, block); |
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| 87 | #else |
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| 88 | asm ("mov r0, %1; mov r1, %2;mov r2, %3; swi %a0" |
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| 89 | : /* No outputs */ |
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| 90 | : "i"(SWI_Read), "r"(fh), "r"(ptr), "r"(len) |
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| 91 | : "r0","r1","r2"); |
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| 92 | #endif |
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| 93 | } |
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| 94 | |
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| 95 | /* Returns #chars not! written */ |
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| 96 | int |
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| 97 | _swiwrite ( |
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| 98 | int file, |
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| 99 | char * ptr, |
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| 100 | int len) |
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| 101 | { |
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| 102 | int fh = file; |
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| 103 | #ifdef ARM_RDI_MONITOR |
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| 104 | int block[3]; |
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| 105 | |
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| 106 | block[0] = fh; |
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| 107 | block[1] = (int) ptr; |
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| 108 | block[2] = len; |
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| 109 | |
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| 110 | return do_AngelSWI (AngelSWI_Reason_Write, block); |
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| 111 | #else |
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| 112 | asm ("mov r0, %1; mov r1, %2;mov r2, %3; swi %a0" |
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| 113 | : /* No outputs */ |
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| 114 | : "i"(SWI_Write), "r"(fh), "r"(ptr), "r"(len) |
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| 115 | : "r0","r1","r2"); |
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| 116 | #endif |
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| 117 | } |
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| 118 | |
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| 119 | /* |
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| 120 | * Move me |
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| 121 | */ |
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| 122 | |
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| 123 | void |
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| 124 | bsp_cleanup (void ) |
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| 125 | { |
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| 126 | /* FIXME: return code is thrown away */ |
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| 127 | |
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| 128 | #ifdef ARM_RDI_MONITOR |
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| 129 | do_AngelSWI (AngelSWI_Reason_ReportException, |
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| 130 | (void *) ADP_Stopped_ApplicationExit); |
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| 131 | #else |
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| 132 | asm ("swi %a0" :: "i" (SWI_Exit)); |
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| 133 | #endif |
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| 134 | } |
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| 135 | |
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| 136 | /* |
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| 137 | * Technically could use this as guts of a "real-time clock driver" |
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| 138 | */ |
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| 139 | |
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| 140 | #if 0 |
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| 141 | int |
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| 142 | _gettimeofday (struct timeval * tp, struct timezone * tzp) |
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| 143 | { |
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| 144 | |
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| 145 | if (tp) |
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| 146 | { |
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| 147 | /* Ask the host for the seconds since the Unix epoch */ |
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| 148 | #ifdef ARM_RDI_MONITOR |
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| 149 | tp->tv_sec = do_AngelSWI (AngelSWI_Reason_Time,NULL); |
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| 150 | #else |
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| 151 | { |
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| 152 | int value; |
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| 153 | asm ("swi %a1; mov %0, r0" : "=r" (value): "i" (SWI_Time) : "r0"); |
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| 154 | tp->tv_sec = value; |
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| 155 | } |
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| 156 | #endif |
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| 157 | tp->tv_usec = 0; |
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| 158 | } |
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| 159 | |
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| 160 | /* Return fixed data for the timezone */ |
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| 161 | if (tzp) |
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| 162 | { |
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| 163 | tzp->tz_minuteswest = 0; |
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| 164 | tzp->tz_dsttime = 0; |
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| 165 | } |
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| 166 | |
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| 167 | return 0; |
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| 168 | } |
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| 169 | #endif |
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| 170 | |
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