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Annotation of sys/arch/amd64/amd64/kgdb_machdep.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: kgdb_machdep.c,v 1.1 2005/11/13 17:51:52 fgsch Exp $  */
        !             2: /*
        !             3:  * Copyright (c) 2005 Federico G. Schwindt
        !             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:  *
        !            14:  * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
        !            15:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
        !            16:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
        !            17:  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OPENBSD
        !            18:  * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
        !            19:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
        !            20:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            21:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            22:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            23:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
        !            24:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: #include <sys/kgdb.h>
        !            28:
        !            29: int
        !            30: kgdb_acc(vaddr_t va, size_t len)
        !            31: {
        !            32:        vaddr_t last_va;
        !            33:        pt_entry_t *pte;
        !            34:
        !            35:        last_va = va + len;
        !            36:        va &= ~PGOFSET;
        !            37:        last_va &= PGOFSET;
        !            38:
        !            39:        do {
        !            40:                pte = kvtopte(va);
        !            41:                if ((*pte & PG_V) == 0)
        !            42:                        return (0);
        !            43:                va += NBPG;
        !            44:        } while (va < last_va);
        !            45:
        !            46:        return (1);
        !            47: }
        !            48:
        !            49: int
        !            50: kgdb_signal(int type)
        !            51: {
        !            52:        switch (type) {
        !            53:        default:
        !            54:                return (SIGEMT);
        !            55:        }
        !            56: }
        !            57:
        !            58: void
        !            59: kgdb_getregs(db_regs_t *regs, kgdb_reg_t *gdb_regs)
        !            60: {
        !            61:        gdb_regs[ 0] = regs->tf_rax;
        !            62:        gdb_regs[ 1] = regs->tf_rbx;
        !            63:        gdb_regs[ 2] = regs->tf_rcx;
        !            64:        gdb_regs[ 3] = regs->tf_rdx;
        !            65:        gdb_regs[ 4] = regs->tf_rsi;
        !            66:        gdb_regs[ 5] = regs->tf_rdi;
        !            67:        gdb_regs[ 6] = regs->tf_rbp;
        !            68:        gdb_regs[ 7] = regs->tf_rsp;
        !            69:        gdb_regs[ 8] = regs->tf_r8;
        !            70:        gdb_regs[ 9] = regs->tf_r9;
        !            71:        gdb_regs[10] = regs->tf_r10;
        !            72:        gdb_regs[11] = regs->tf_r11;
        !            73:        gdb_regs[12] = regs->tf_r12;
        !            74:        gdb_regs[13] = regs->tf_r13;
        !            75:        gdb_regs[14] = regs->tf_r14;
        !            76:        gdb_regs[15] = regs->tf_r15;
        !            77:        gdb_regs[16] = regs->tf_rip;
        !            78:        /* XXX: 32bits but defined as 64 */
        !            79:        gdb_regs[17] = regs->tf_rflags;
        !            80:        gdb_regs[18] = regs->tf_cs;
        !            81:        gdb_regs[19] = regs->tf_ss;
        !            82: }
        !            83:
        !            84: void
        !            85: kgdb_setregs(db_regs_t *regs, kgdb_reg_t *gdb_regs)
        !            86: {
        !            87:        regs->tf_rax = gdb_regs[ 0];
        !            88:        regs->tf_rbx = gdb_regs[ 1];
        !            89:        regs->tf_rcx = gdb_regs[ 2];
        !            90:        regs->tf_rdx = gdb_regs[ 3];
        !            91:        regs->tf_rsi = gdb_regs[ 4];
        !            92:        regs->tf_rdi = gdb_regs[ 5];
        !            93:        regs->tf_rbp = gdb_regs[ 6];
        !            94:        regs->tf_rsp = gdb_regs[ 7];
        !            95:        regs->tf_r8  = gdb_regs[ 8];
        !            96:        regs->tf_r9  = gdb_regs[ 9];
        !            97:        regs->tf_r10 = gdb_regs[10];
        !            98:        regs->tf_r11 = gdb_regs[11];
        !            99:        regs->tf_r12 = gdb_regs[12];
        !           100:        regs->tf_r13 = gdb_regs[13];
        !           101:        regs->tf_r14 = gdb_regs[14];
        !           102:        regs->tf_r15 = gdb_regs[15];
        !           103:        regs->tf_rip = gdb_regs[16];
        !           104:        regs->tf_rflags = gdb_regs[17];
        !           105:        regs->tf_cs  = gdb_regs[18];
        !           106:        regs->tf_ss  = gdb_regs[19];
        !           107: }