1 /* Native-dependent code for OpenBSD/mips64.
3 Copyright (C) 2004-2016 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
25 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
29 #include "mips-tdep.h"
30 #include "inf-ptrace.h"
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
38 /* Supply the general-purpose registers stored in GREGS to REGCACHE. */
41 mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs)
43 const char *regs = gregs;
46 for (regnum = MIPS_ZERO_REGNUM; regnum <= MIPS_PC_REGNUM; regnum++)
47 regcache_raw_supply (regcache, regnum, regs + regnum * 8);
49 for (regnum = MIPS_FP0_REGNUM; regnum <= MIPS_FSR_REGNUM; regnum++)
50 regcache_raw_supply (regcache, regnum, regs + (regnum + 2) * 8);
53 /* Collect the general-purpose registers from REGCACHE and store them
57 mips64obsd_collect_gregset (const struct regcache *regcache,
58 void *gregs, int regnum)
63 for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++)
65 if (regnum == -1 || regnum == i)
66 regcache_raw_collect (regcache, i, regs + i * 8);
69 for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
71 if (regnum == -1 || regnum == i)
72 regcache_raw_collect (regcache, i, regs + (i + 2) * 8);
77 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
81 mips64obsd_fetch_inferior_registers (struct target_ops *ops,
82 struct regcache *regcache, int regnum)
86 if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
87 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
88 perror_with_name (_("Couldn't get registers"));
90 mips64obsd_supply_gregset (regcache, ®s);
93 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
94 this for all registers. */
97 mips64obsd_store_inferior_registers (struct target_ops *ops,
98 struct regcache *regcache, int regnum)
102 if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
103 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
104 perror_with_name (_("Couldn't get registers"));
106 mips64obsd_collect_gregset (regcache, ®s, regnum);
108 if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
109 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
110 perror_with_name (_("Couldn't write registers"));
114 /* Provide a prototype to silence -Wmissing-prototypes. */
115 void _initialize_mips64obsd_nat (void);
118 _initialize_mips64obsd_nat (void)
120 struct target_ops *t;
122 t = inf_ptrace_target ();
123 t->to_fetch_registers = mips64obsd_fetch_inferior_registers;
124 t->to_store_registers = mips64obsd_store_inferior_registers;