Current Path : /sys/i386/i386/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/i386/i386/gdb_machdep.c |
/*- * Copyright (c) 2004 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/i386/i386/gdb_machdep.c 139724 2005-01-05 19:10:48Z imp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/kdb.h> #include <sys/kernel.h> #include <sys/proc.h> #include <sys/signal.h> #include <machine/gdb_machdep.h> #include <machine/pcb.h> #include <machine/trap.h> #include <machine/frame.h> #include <machine/endian.h> #include <gdb/gdb.h> void * gdb_cpu_getreg(int regnum, size_t *regsz) { *regsz = gdb_cpu_regsz(regnum); if (kdb_thread == curthread) { switch (regnum) { case 0: return (&kdb_frame->tf_eax); case 1: return (&kdb_frame->tf_ecx); case 2: return (&kdb_frame->tf_edx); } } switch (regnum) { case 3: return (&kdb_thrctx->pcb_ebx); case 4: return (&kdb_thrctx->pcb_esp); case 5: return (&kdb_thrctx->pcb_ebp); case 6: return (&kdb_thrctx->pcb_esi); case 7: return (&kdb_thrctx->pcb_edi); case 8: return (&kdb_thrctx->pcb_eip); } return (NULL); } void gdb_cpu_setreg(int regnum, void *val) { switch (regnum) { case GDB_REG_PC: kdb_thrctx->pcb_eip = *(register_t *)val; if (kdb_thread == curthread) kdb_frame->tf_eip = *(register_t *)val; } } int gdb_cpu_signal(int type, int code) { switch (type & ~T_USER) { case 0: return (SIGFPE); /* Divide by zero. */ case 1: return (SIGTRAP); /* Debug exception. */ case 3: return (SIGTRAP); /* Breakpoint. */ case 4: return (SIGURG); /* into instr. (overflow). */ case 5: return (SIGURG); /* bound instruction. */ case 6: return (SIGILL); /* Invalid opcode. */ case 7: return (SIGFPE); /* Coprocessor not present. */ case 8: return (SIGEMT); /* Double fault. */ case 9: return (SIGSEGV); /* Coprocessor segment overrun. */ case 10: return (SIGTRAP); /* Invalid TSS (also single-step). */ case 11: return (SIGSEGV); /* Segment not present. */ case 12: return (SIGSEGV); /* Stack exception. */ case 13: return (SIGSEGV); /* General protection. */ case 14: return (SIGSEGV); /* Page fault. */ case 16: return (SIGEMT); /* Coprocessor error. */ } return (SIGEMT); }