2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2010 The FreeBSD Foundation
7 * This software was developed by Rui Paulo under sponsorship from the
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
36 #include <sys/ptrace.h>
46 proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
50 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
51 phdl->status == PS_IDLE) {
55 memset(®s, 0, sizeof(regs));
56 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
60 #if defined(__aarch64__)
62 #elif defined(__amd64__)
63 *regvalue = regs.r_rip;
64 #elif defined(__arm__)
65 *regvalue = regs.r_pc;
66 #elif defined(__i386__)
67 *regvalue = regs.r_eip;
68 #elif defined(__powerpc__)
70 #elif defined(__riscv)
71 *regvalue = regs.sepc;
75 #if defined(__aarch64__)
77 #elif defined(__amd64__)
78 *regvalue = regs.r_rsp;
79 #elif defined(__arm__)
80 *regvalue = regs.r_sp;
81 #elif defined(__i386__)
82 *regvalue = regs.r_esp;
83 #elif defined(__powerpc__)
84 *regvalue = regs.fixreg[1];
85 #elif defined(__riscv)
90 DPRINTFX("ERROR: no support for reg number %d", reg);
98 proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
102 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
103 phdl->status == PS_IDLE) {
107 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
111 #if defined(__aarch64__)
113 #elif defined(__amd64__)
114 regs.r_rip = regvalue;
115 #elif defined(__arm__)
116 regs.r_pc = regvalue;
117 #elif defined(__i386__)
118 regs.r_eip = regvalue;
119 #elif defined(__powerpc__)
121 #elif defined(__riscv)
122 regs.sepc = regvalue;
126 #if defined(__aarch64__)
128 #elif defined(__amd64__)
129 regs.r_rsp = regvalue;
130 #elif defined(__arm__)
131 regs.r_sp = regvalue;
132 #elif defined(__i386__)
133 regs.r_esp = regvalue;
134 #elif defined(__powerpc__)
135 regs.fixreg[1] = regvalue;
136 #elif defined(__riscv)
141 DPRINTFX("ERROR: no support for reg number %d", reg);
144 if (ptrace(PT_SETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)