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>
44 proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
48 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
49 phdl->status == PS_IDLE) {
53 memset(®s, 0, sizeof(regs));
54 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
58 #if defined(__aarch64__)
60 #elif defined(__amd64__)
61 *regvalue = regs.r_rip;
62 #elif defined(__arm__)
63 *regvalue = regs.r_pc;
64 #elif defined(__i386__)
65 *regvalue = regs.r_eip;
66 #elif defined(__mips__)
67 *regvalue = regs.r_regs[PC];
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(__mips__)
84 *regvalue = regs.r_regs[SP];
85 #elif defined(__powerpc__)
86 *regvalue = regs.fixreg[1];
87 #elif defined(__riscv__)
92 DPRINTFX("ERROR: no support for reg number %d", reg);
100 proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
104 if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
105 phdl->status == PS_IDLE) {
109 if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
113 #if defined(__aarch64__)
115 #elif defined(__amd64__)
116 regs.r_rip = regvalue;
117 #elif defined(__arm__)
118 regs.r_pc = regvalue;
119 #elif defined(__i386__)
120 regs.r_eip = regvalue;
121 #elif defined(__mips__)
122 regs.r_regs[PC] = regvalue;
123 #elif defined(__powerpc__)
125 #elif defined(__riscv__)
126 regs.sepc = regvalue;
130 #if defined(__aarch64__)
132 #elif defined(__amd64__)
133 regs.r_rsp = regvalue;
134 #elif defined(__arm__)
135 regs.r_sp = regvalue;
136 #elif defined(__i386__)
137 regs.r_esp = regvalue;
138 #elif defined(__mips__)
139 regs.r_regs[PC] = regvalue;
140 #elif defined(__powerpc__)
141 regs.fixreg[1] = regvalue;
142 #elif defined(__riscv__)
147 DPRINTFX("ERROR: no support for reg number %d", reg);
150 if (ptrace(PT_SETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)