/* $OpenBSD: kgdb_machdep.c,v 1.1 2005/11/13 17:51:52 fgsch Exp $ */
/*
* Copyright (c) 2005 Federico G. Schwindt
*
* 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 OPENBSD PROJECT AND CONTRIBUTORS
* ``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 OPENBSD
* PROJECT OR CONTRIBUTORS 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/kgdb.h>
int
kgdb_acc(vaddr_t va, size_t len)
{
vaddr_t last_va;
pt_entry_t *pte;
last_va = va + len;
va &= ~PGOFSET;
last_va &= PGOFSET;
do {
pte = kvtopte(va);
if ((*pte & PG_V) == 0)
return (0);
va += NBPG;
} while (va < last_va);
return (1);
}
int
kgdb_signal(int type)
{
switch (type) {
default:
return (SIGEMT);
}
}
void
kgdb_getregs(db_regs_t *regs, kgdb_reg_t *gdb_regs)
{
gdb_regs[ 0] = regs->tf_rax;
gdb_regs[ 1] = regs->tf_rbx;
gdb_regs[ 2] = regs->tf_rcx;
gdb_regs[ 3] = regs->tf_rdx;
gdb_regs[ 4] = regs->tf_rsi;
gdb_regs[ 5] = regs->tf_rdi;
gdb_regs[ 6] = regs->tf_rbp;
gdb_regs[ 7] = regs->tf_rsp;
gdb_regs[ 8] = regs->tf_r8;
gdb_regs[ 9] = regs->tf_r9;
gdb_regs[10] = regs->tf_r10;
gdb_regs[11] = regs->tf_r11;
gdb_regs[12] = regs->tf_r12;
gdb_regs[13] = regs->tf_r13;
gdb_regs[14] = regs->tf_r14;
gdb_regs[15] = regs->tf_r15;
gdb_regs[16] = regs->tf_rip;
/* XXX: 32bits but defined as 64 */
gdb_regs[17] = regs->tf_rflags;
gdb_regs[18] = regs->tf_cs;
gdb_regs[19] = regs->tf_ss;
}
void
kgdb_setregs(db_regs_t *regs, kgdb_reg_t *gdb_regs)
{
regs->tf_rax = gdb_regs[ 0];
regs->tf_rbx = gdb_regs[ 1];
regs->tf_rcx = gdb_regs[ 2];
regs->tf_rdx = gdb_regs[ 3];
regs->tf_rsi = gdb_regs[ 4];
regs->tf_rdi = gdb_regs[ 5];
regs->tf_rbp = gdb_regs[ 6];
regs->tf_rsp = gdb_regs[ 7];
regs->tf_r8 = gdb_regs[ 8];
regs->tf_r9 = gdb_regs[ 9];
regs->tf_r10 = gdb_regs[10];
regs->tf_r11 = gdb_regs[11];
regs->tf_r12 = gdb_regs[12];
regs->tf_r13 = gdb_regs[13];
regs->tf_r14 = gdb_regs[14];
regs->tf_r15 = gdb_regs[15];
regs->tf_rip = gdb_regs[16];
regs->tf_rflags = gdb_regs[17];
regs->tf_cs = gdb_regs[18];
regs->tf_ss = gdb_regs[19];
}