2 * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
3 * Copyright (c) 2004 Marcel Moolenaar
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/procfs.h>
36 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
38 mcontext_t *mc = &uc->uc_mcontext;
40 mc->mc_rdi = r->r_rdi;
41 mc->mc_rsi = r->r_rsi;
42 mc->mc_rdx = r->r_rdx;
43 mc->mc_rcx = r->r_rcx;
46 mc->mc_rax = r->r_rax;
47 mc->mc_rbx = r->r_rbx;
48 mc->mc_rbp = r->r_rbp;
49 mc->mc_r10 = r->r_r10;
50 mc->mc_r11 = r->r_r11;
51 mc->mc_r12 = r->r_r12;
52 mc->mc_r13 = r->r_r13;
53 mc->mc_r14 = r->r_r14;
54 mc->mc_r15 = r->r_r15;
55 mc->mc_rip = r->r_rip;
57 mc->mc_rflags = r->r_rflags;
58 mc->mc_rsp = r->r_rsp;
63 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
65 const mcontext_t *mc = &uc->uc_mcontext;
67 r->r_rdi = mc->mc_rdi;
68 r->r_rsi = mc->mc_rsi;
69 r->r_rdx = mc->mc_rdx;
70 r->r_rcx = mc->mc_rcx;
73 r->r_rax = mc->mc_rax;
74 r->r_rbx = mc->mc_rbx;
75 r->r_rbp = mc->mc_rbp;
76 r->r_r10 = mc->mc_r10;
77 r->r_r11 = mc->mc_r11;
78 r->r_r12 = mc->mc_r12;
79 r->r_r13 = mc->mc_r13;
80 r->r_r14 = mc->mc_r14;
81 r->r_r15 = mc->mc_r15;
82 r->r_rip = mc->mc_rip;
84 r->r_rflags = mc->mc_rflags;
85 r->r_rsp = mc->mc_rsp;
90 pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
92 memcpy(&uc->uc_mcontext.mc_fpstate, r, sizeof(r));
96 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
98 memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(r));
108 pt_reg_sstep(struct reg *reg, int step)
114 reg->r_rflags |= 0x0100;
116 reg->r_rflags &= ~0x0100;
117 return (old != reg->r_rflags); /* changed ? */