1 /* Low level Alpha GNU/Linux interface, for GDB when running native.
2 Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011
3 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/>. */
23 #include "linux-nat.h"
25 #include "alpha-tdep.h"
27 #include <sys/ptrace.h>
28 #include <alpha/ptrace.h>
30 #include <sys/procfs.h>
33 /* The address of UNIQUE for ptrace. */
34 #define ALPHA_UNIQUE_PTRACE_ADDR 65
37 /* See the comment in m68k-tdep.c regarding the utility of these
41 supply_gregset (struct regcache
*regcache
, const gdb_gregset_t
*gregsetp
)
43 const long *regp
= (const long *)gregsetp
;
45 /* PC is in slot 32, UNIQUE is in slot 33. */
46 alpha_supply_int_regs (regcache
, -1, regp
, regp
+ 31, regp
+ 32);
50 fill_gregset (const struct regcache
*regcache
,
51 gdb_gregset_t
*gregsetp
, int regno
)
53 long *regp
= (long *)gregsetp
;
55 /* PC is in slot 32, UNIQUE is in slot 33. */
56 alpha_fill_int_regs (regcache
, regno
, regp
, regp
+ 31, regp
+ 32);
59 /* Now we do the same thing for floating-point registers.
60 Again, see the comments in m68k-tdep.c. */
63 supply_fpregset (struct regcache
*regcache
, const gdb_fpregset_t
*fpregsetp
)
65 const long *regp
= (const long *)fpregsetp
;
67 /* FPCR is in slot 32. */
68 alpha_supply_fp_regs (regcache
, -1, regp
, regp
+ 31);
72 fill_fpregset (const struct regcache
*regcache
,
73 gdb_fpregset_t
*fpregsetp
, int regno
)
75 long *regp
= (long *)fpregsetp
;
77 /* FPCR is in slot 32. */
78 alpha_fill_fp_regs (regcache
, regno
, regp
, regp
+ 31);
83 alpha_linux_register_u_offset (struct gdbarch
*gdbarch
, int regno
, int store_p
)
85 if (regno
== gdbarch_pc_regnum (gdbarch
))
87 if (regno
== ALPHA_UNIQUE_REGNUM
)
88 return ALPHA_UNIQUE_PTRACE_ADDR
;
89 if (regno
< gdbarch_fp0_regnum (gdbarch
))
90 return GPR_BASE
+ regno
;
92 return FPR_BASE
+ regno
- gdbarch_fp0_regnum (gdbarch
);
95 void _initialialize_alpha_linux_nat (void);
98 _initialize_alpha_linux_nat (void)
100 linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset
));