1 //=============================================================================
7 //=============================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //=============================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors:msalter
51 //####DESCRIPTIONEND####
53 //=============================================================================
55 #include <pkgconf/hal.h>
58 #include <pkgconf/redboot.h>
61 #if defined(CYGSEM_REDBOOT_BSP_SYSCALLS)
63 #include <cyg/hal/hal_stub.h> // Our header
64 #include <cyg/hal/hal_arch.h> // HAL_BREAKINST
65 #include <cyg/hal/hal_cache.h> // HAL_xCACHE_x
66 #include <cyg/hal/hal_intr.h> // interrupt disable/restore
68 #include <cyg/hal/hal_if.h> // ROM calling interface
69 #include <cyg/hal/hal_misc.h> // Helper functions
71 extern CYG_ADDRWORD __do_syscall(CYG_ADDRWORD func, // syscall function number
72 CYG_ADDRWORD arg1, CYG_ADDRWORD arg2, // up to four args.
73 CYG_ADDRWORD arg3, CYG_ADDRWORD arg4,
74 CYG_ADDRWORD *retval, // syscall return value
75 CYG_ADDRWORD *sig); // signal to return (or 0)
78 #define SYS_interrupt 1000
81 hal_syscall_handler(void)
83 CYG_ADDRWORD func, arg1, arg2, arg3, arg4;
84 CYG_ADDRWORD err, sig;
86 target_register_t sr = get_register(REG_SR);
88 if ((sr & CYGARC_SR_PM) == 0 || (sr & CYGARC_SR_BS) == 0) {
90 func = get_register(REG_B0R0);
91 arg1 = get_register(REG_B0R1);
92 arg2 = get_register(REG_B0R2);
93 arg3 = get_register(REG_B0R3);
97 func = get_register(REG_B1R0);
98 arg1 = get_register(REG_B1R1);
99 arg2 = get_register(REG_B1R2);
100 arg3 = get_register(REG_B1R3);
106 if (func == SYS_interrupt) {
107 // A console interrupt landed us here.
108 // Invoke the debug agent so as to cause a SIGINT.
112 if (__do_syscall(func, arg1, arg2, arg3, arg4, &err, &sig)) {
113 put_register(retreg, err);
120 #endif // CYGSEM_REDBOOT_BSP_SYSCALLS