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Annotation of prex-old/sys/arch/arm/arm/trap.c, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2005, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: /*
                     31:  * trap.c - called from the trap handler when a processor trap occurs.
                     32:  */
                     33:
                     34: #include <kernel.h>
                     35: #include <exception.h>
                     36: #include <thread.h>
                     37: #include <task.h>
                     38: #include <cpu.h>
                     39:
                     40: #ifdef DEBUG
                     41: void trap_dump(struct cpu_regs *);
                     42:
                     43: static char *const trap_name[] = {
                     44:        "Reset",
                     45:        "Undefined instruction",
                     46:        "Software interrupt",
                     47:        "Prefetch abort",
                     48:        "Data abort",
                     49:        "Reserved",
                     50:        "IRQ",
                     51:        "FIQ",
                     52: };
                     53: #define MAXTRAP (sizeof(trap_name) / sizeof(void *) - 1)
                     54: #endif /* DEBUG */
                     55:
                     56: /*
                     57:  * Trap/exception mapping table.
                     58:  * ARM exception is translated to the architecture
                     59:  * independent exception code.
                     60:  */
                     61: static const int exception_map[] = {
                     62:        0,
                     63:        SIGILL,         /* Undefined instruction */
                     64:        0,
                     65:        SIGSEGV,        /* Prefech abort */
                     66:        SIGSEGV,        /* Data abort */
                     67:        0,
                     68:        0,
                     69: };
                     70:
                     71: /*
                     72:  * TODO: Need to implement trap code
                     73:  */
                     74: