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mips64-obsd-nat.c
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1/* Native-dependent code for OpenBSD/mips64.
2
3 Copyright (C) 2004-2023 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#include <sys/types.h>
26#include <sys/ptrace.h>
27#include <machine/reg.h>
28
29#include "mips-tdep.h"
30#include "inf-ptrace.h"
31#include "obsd-nat.h"
32
33/* Shorthand for some register numbers used below. */
34#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
35#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
36#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
37
39{
40 void fetch_registers (struct regcache *, int) override;
41 void store_registers (struct regcache *, int) override;
42};
43
45
46/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
47
48static void
49mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs)
50{
51 const char *regs = gregs;
52 int regnum;
53
55 regcache->raw_supply (regnum, regs + regnum * 8);
56
58 regcache->raw_supply (regnum, regs + (regnum + 2) * 8);
59}
60
61/* Collect the general-purpose registers from REGCACHE and store them
62 in GREGS. */
63
64static void
66 void *gregs, int regnum)
67{
68 char *regs = gregs;
69 int i;
70
71 for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++)
72 {
73 if (regnum == -1 || regnum == i)
74 regcache->raw_collect (i, regs + i * 8);
75 }
76
77 for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
78 {
79 if (regnum == -1 || regnum == i)
80 regcache->raw_collect (i, regs + (i + 2) * 8);
81 }
82}
83
84
85/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
86 for all registers. */
87
88void
90{
91 struct reg regs;
92 pid_t pid = regcache->ptid ().pid ();
93
94 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
95 perror_with_name (_("Couldn't get registers"));
96
98}
99
100/* Store register REGNUM back into the inferior. If REGNUM is -1, do
101 this for all registers. */
102
103static void
105{
106 struct reg regs;
107 pid_t pid = regcache->ptid ().pid ();
108
109 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
110 perror_with_name (_("Couldn't get registers"));
111
113
114 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
115 perror_with_name (_("Couldn't write registers"));
116}
117
119void
int regnum
void raw_collect(int regnum, void *buf) const override
Definition regcache.c:1127
void raw_supply(int regnum, const void *buf) override
Definition regcache.c:1062
ptid_t ptid() const
Definition regcache.h:408
#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
void add_inf_child_target(inf_child_target *target)
Definition inf-child.c:418
#define PTRACE_TYPE_ARG3
@ MIPS_ZERO_REGNUM
Definition mips-tdep.h:135
static void mips64obsd_collect_gregset(const struct regcache *regcache, void *gregs, int regnum)
#define MIPS_FSR_REGNUM
static void mips64obsd_supply_gregset(struct regcache *regcache, const void *gregs)
#define MIPS_PC_REGNUM
static mips64_obsd_nat_target the_mips64_obsd_nat_target
void _initialize_mips64obsd_nat()
#define MIPS_FP0_REGNUM
void store_registers(struct regcache *, int) override
void fetch_registers(struct regcache *, int) override