1/* Native-dependent code for NetBSD/sparc64.
2
3   Copyright 2003, 2004 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 2 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, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330,
20   Boston, MA 02111-1307, USA.  */
21
22#include "defs.h"
23
24#include "sparc64-tdep.h"
25#include "sparc-nat.h"
26
27/* NetBSD is different from the other OSes that support both SPARC and
28   UltraSPARC in that the result of ptrace(2) depends on whether the
29   traced process is 32-bit or 64-bit.  */
30
31static void
32sparc64nbsd_supply_gregset (const struct sparc_gregset *gregset,
33			    struct regcache *regcache,
34			    int regnum, const void *gregs)
35{
36  int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
37
38  if (sparc32)
39    sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
40  else
41    sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
42}
43
44static void
45sparc64nbsd_collect_gregset (const struct sparc_gregset *gregset,
46			     const struct regcache *regcache,
47			     int regnum, void *gregs)
48{
49  int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
50
51  if (sparc32)
52    sparc32_collect_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
53  else
54    sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
55}
56
57static void
58sparc64nbsd_supply_fpregset (struct regcache *regcache,
59			     int regnum, const void *fpregs)
60{
61  int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
62
63  if (sparc32)
64    sparc32_supply_fpregset (regcache, regnum, fpregs);
65  else
66    sparc64_supply_fpregset (regcache, regnum, fpregs);
67}
68
69static void
70sparc64nbsd_collect_fpregset (const struct regcache *regcache,
71			      int regnum, void *fpregs)
72{
73  int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
74
75  if (sparc32)
76    sparc32_collect_fpregset (regcache, regnum, fpregs);
77  else
78    sparc64_collect_fpregset (regcache, regnum, fpregs);
79}
80
81/* Determine whether `gregset_t' contains register REGNUM.  */
82
83static int
84sparc64nbsd_gregset_supplies_p (int regnum)
85{
86  if (gdbarch_ptr_bit (current_gdbarch) == 32)
87    return sparc32_gregset_supplies_p (regnum);
88
89  /* Integer registers.  */
90  if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
91      || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
92      || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
93      || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
94    return 1;
95
96  /* Control registers.  */
97  if (regnum == SPARC64_PC_REGNUM
98      || regnum == SPARC64_NPC_REGNUM
99      || regnum == SPARC64_STATE_REGNUM
100      || regnum == SPARC64_Y_REGNUM)
101    return 1;
102
103  return 0;
104}
105
106/* Determine whether `fpregset_t' contains register REGNUM.  */
107
108static int
109sparc64nbsd_fpregset_supplies_p (int regnum)
110{
111  if (gdbarch_ptr_bit (current_gdbarch) == 32)
112    return sparc32_fpregset_supplies_p (regnum);
113
114  /* Floating-point registers.  */
115  if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
116      || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
117    return 1;
118
119  /* Control registers.  */
120  if (regnum == SPARC64_FSR_REGNUM)
121    return 1;
122
123  return 0;
124}
125
126
127/* Provide a prototype to silence -Wmissing-prototypes.  */
128void _initialize_sparcnbsd_nat (void);
129
130void
131_initialize_sparcnbsd_nat (void)
132{
133  sparc_supply_gregset = sparc64nbsd_supply_gregset;
134  sparc_collect_gregset = sparc64nbsd_collect_gregset;
135  sparc_supply_fpregset = sparc64nbsd_supply_fpregset;
136  sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
137  sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
138  sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
139}
140