2 * Copyright (c) 2010 The FreeBSD Foundation
5 * This software was developed by Rui Paulo under sponsorship from the
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/types.h>
34 #include <sys/ptrace.h>
43 proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
47 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
48 phdl->status == PS_IDLE) {
52 memset(®s, 0, sizeof(regs));
53 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
57 #if defined(__amd64__)
58 *regvalue = regs.r_rip;
59 #elif defined(__i386__)
60 *regvalue = regs.r_eip;
64 #if defined(__amd64__)
65 *regvalue = regs.r_rsp;
66 #elif defined(__i386__)
67 *regvalue = regs.r_esp;
71 warn("ERROR: no support for reg number %d", reg);
79 proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
83 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
84 phdl->status == PS_IDLE) {
88 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
92 #if defined(__amd64__)
93 regs.r_rip = regvalue;
94 #elif defined(__i386__)
95 regs.r_eip = regvalue;
99 #if defined(__amd64__)
100 regs.r_rsp = regvalue;
101 #elif defined(__i386__)
102 regs.r_esp = regvalue;
106 warn("ERROR: no support for reg number %d", reg);
109 if (ptrace(PT_SETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)