Definition in file hal_syscall.c.
Go to the source code of this file.
Functions | |
| CYG_ADDRWORD | __do_syscall (CYG_ADDRWORD func, CYG_ADDRWORD arg1, CYG_ADDRWORD arg2, CYG_ADDRWORD arg3, CYG_ADDRWORD arg4, CYG_ADDRWORD *retval) |
| int | hal_syscall_handler (void) |
| HAL syscall handler. | |
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Referenced by hal_syscall_handler(). |
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HAL syscall handler.
Definition at line 97 of file hal_syscall.c. References __do_syscall(), ER0, ER1, ER2, ER3, get_register(), and put_register().
00098 {
00099 CYG_ADDRWORD func, arg1, arg2, arg3, arg4;
00100 CYG_ADDRWORD err;
00101
00102 func = get_register(ER0);
00103 arg1 = get_register(ER1);
00104 arg2 = get_register(ER2);
00105 arg3 = get_register(ER3);
00106 arg4 = 0;
00107
00108 if (func == SYS_interrupt) {
00109 // A console interrupt landed us here.
00110 // Invoke the debug agent so as to cause a SIGINT.
00111 return SIGINT;
00112 }
00113
00114 if (__do_syscall(func, arg1, arg2, arg3, arg4, &err)) {
00115 put_register(D0, err);
00116 return 0;
00117 }
00118
00119 return SIGTRAP;
00120 }
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1.3.5