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amd64-bsd-nat.c
Go to the documentation of this file.
1/* Native-dependent code for AMD64 BSD's.
2
3 Copyright (C) 2003-2023 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20#include "defs.h"
21#include "inferior.h"
22#include "regcache.h"
23#include "target.h"
24
25/* We include <signal.h> to make sure `struct fxsave64' is defined on
26 NetBSD, since NetBSD's <machine/reg.h> needs it. */
27#include <signal.h>
28#include <sys/types.h>
29#include <sys/ptrace.h>
30#include <machine/reg.h>
31
32#include "amd64-tdep.h"
33#include "amd64-nat.h"
34#include "x86-bsd-nat.h"
35#include "inf-ptrace.h"
36#include "amd64-bsd-nat.h"
37
38
39static PTRACE_TYPE_RET
40gdb_ptrace (PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr,
42{
43#ifdef __NetBSD__
44 gdb_assert (data == 0);
45 /* Support for NetBSD threads: unlike other ptrace implementations in this
46 file, NetBSD requires that we pass both the pid and lwp. */
47 return ptrace (request, ptid.pid (), addr, ptid.lwp ());
48#else
49 pid_t pid = get_ptrace_pid (ptid);
50 return ptrace (request, pid, addr, data);
51#endif
52}
53
54/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
55 for all registers (including the floating-point registers). */
56
57void
59{
60 struct gdbarch *gdbarch = regcache->arch ();
61 ptid_t ptid = regcache->ptid ();
62
64 {
65 struct reg regs;
66
67 if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
68 perror_with_name (_("Couldn't get registers"));
69
71 if (regnum != -1)
72 return;
73 }
74
76 {
77 struct fpreg fpregs;
78
79 if (gdb_ptrace (PT_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
80 perror_with_name (_("Couldn't get floating point status"));
81
82 amd64_supply_fxsave (regcache, -1, &fpregs);
83 }
84}
85
86/* Store register REGNUM back into the inferior. If REGNUM is -1, do
87 this for all registers (including the floating-point registers). */
88
89void
91{
92 struct gdbarch *gdbarch = regcache->arch ();
93 ptid_t ptid = regcache->ptid ();
94
96 {
97 struct reg regs;
98
99 if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
100 perror_with_name (_("Couldn't get registers"));
101
103
104 if (gdb_ptrace (PT_SETREGS, ptid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
105 perror_with_name (_("Couldn't write registers"));
106
107 if (regnum != -1)
108 return;
109 }
110
112 {
113 struct fpreg fpregs;
114
115 if (gdb_ptrace (PT_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
116 perror_with_name (_("Couldn't get floating point status"));
117
119
120 if (gdb_ptrace (PT_SETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
121 perror_with_name (_("Couldn't write floating point status"));
122 }
123}
int regnum
static PTRACE_TYPE_RET gdb_ptrace(PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr, PTRACE_TYPE_ARG4 data)
void amd64bsd_store_inferior_registers(struct regcache *regcache, int regnum)
void amd64bsd_fetch_inferior_registers(struct regcache *regcache, int regnum)
void amd64_collect_native_gregset(const struct regcache *regcache, void *gregs, int regnum)
Definition amd64-nat.c:119
void amd64_supply_native_gregset(struct regcache *regcache, const void *gregs, int regnum)
Definition amd64-nat.c:88
int amd64_native_gregset_supplies_p(struct gdbarch *gdbarch, int regnum)
Definition amd64-nat.c:78
void amd64_supply_fxsave(struct regcache *regcache, int regnum, const void *fxsave)
void amd64_collect_fxsave(const struct regcache *regcache, int regnum, void *fxsave)
gdbarch * arch() const
Definition regcache.c:231
ptid_t ptid() const
Definition regcache.h:408
#define PTRACE_TYPE_RET
Definition config.h:675
#define PTRACE_TYPE_ARG1
Definition config.h:663
#define ptrace(request, pid, addr, data)
Definition gdb_ptrace.h:141
mach_port_t mach_port_t name mach_port_t mach_port_t name kern_return_t int int rusage_t pid_t pid
Definition gnu-nat.c:1791
pid_t get_ptrace_pid(ptid_t ptid)
Definition inf-ptrace.c:238
#define PTRACE_TYPE_ARG3
#define PTRACE_TYPE_ARG4