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[gdb.git] / gdb / armbsd-tdep.c
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1 /* Target-dependent code for ARM BSD's.
3 Copyright (C) 2006, 2007, 2008 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/>. */
20 #include "defs.h"
21 #include "osabi.h"
22 #include "regcache.h"
23 #include "regset.h"
25 #include "gdb_assert.h"
26 #include "gdb_string.h"
28 #include "arm-tdep.h"
30 /* Core file support. */
32 /* Sizeof `struct reg' in <machine/reg.h>. */
33 #define ARMBSD_SIZEOF_GREGS (17 * 4)
35 /* Sizeof `struct fpreg' in <machine/reg.h. */
36 #define ARMBSD_SIZEOF_FPREGS ((1 + (8 * 3)) * 4)
38 int
39 armbsd_fpreg_offset (int regnum)
41 if (regnum == ARM_FPS_REGNUM)
42 return 0;
44 return 4 + (regnum - ARM_F0_REGNUM) * 12;
47 /* Supply register REGNUM from the buffer specified by FPREGS and LEN
48 in the floating-point register set REGSET to register cache
49 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
51 static void
52 armbsd_supply_fpregset (const struct regset *regset,
53 struct regcache *regcache,
54 int regnum, const void *fpregs, size_t len)
56 const gdb_byte *regs = fpregs;
57 int i;
59 gdb_assert (len >= ARMBSD_SIZEOF_FPREGS);
61 for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++)
63 if (regnum == i || regnum == -1)
64 regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i));
68 /* Supply register REGNUM from the buffer specified by GREGS and LEN
69 in the general-purpose register set REGSET to register cache
70 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
72 static void
73 armbsd_supply_gregset (const struct regset *regset,
74 struct regcache *regcache,
75 int regnum, const void *gregs, size_t len)
77 const gdb_byte *regs = gregs;
78 int i;
80 gdb_assert (len >= ARMBSD_SIZEOF_GREGS);
82 for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++)
84 if (regnum == i || regnum == -1)
85 regcache_raw_supply (regcache, i, regs + i * 4);
88 if (regnum == ARM_PS_REGNUM || regnum == -1)
89 regcache_raw_supply (regcache, i, regs + 16 * 4);
91 if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS)
93 regs += ARMBSD_SIZEOF_GREGS;
94 len -= ARMBSD_SIZEOF_GREGS;
95 armbsd_supply_fpregset (regset, regcache, regnum, regs, len);
99 /* ARM register sets. */
101 static struct regset armbsd_gregset =
103 NULL,
104 armbsd_supply_gregset
107 static struct regset armbsd_fpregset =
109 NULL,
110 armbsd_supply_fpregset
113 /* Return the appropriate register set for the core section identified
114 by SECT_NAME and SECT_SIZE. */
116 const struct regset *
117 armbsd_regset_from_core_section (struct gdbarch *gdbarch,
118 const char *sect_name, size_t sect_size)
120 if (strcmp (sect_name, ".reg") == 0 && sect_size >= ARMBSD_SIZEOF_GREGS)
121 return &armbsd_gregset;
123 if (strcmp (sect_name, ".reg2") == 0 && sect_size >= ARMBSD_SIZEOF_FPREGS)
124 return &armbsd_fpregset;
126 return NULL;