1 /* Low level Alpha GNU/Linux interface, for GDB when running native.
2 Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
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
38 * See the comment in m68k-tdep.c regarding the utility of these functions.
42 supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
44 const long *regp = (const long *)gregsetp;
46 /* PC is in slot 32, UNIQUE is in slot 33. */
47 alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32);
51 fill_gregset (const struct regcache *regcache,
52 gdb_gregset_t *gregsetp, int regno)
54 long *regp = (long *)gregsetp;
56 /* PC is in slot 32, UNIQUE is in slot 33. */
57 alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32);
61 * Now we do the same thing for floating-point registers.
62 * Again, see the comments in m68k-tdep.c.
66 supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
68 const long *regp = (const long *)fpregsetp;
70 /* FPCR is in slot 32. */
71 alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
75 fill_fpregset (const struct regcache *regcache,
76 gdb_fpregset_t *fpregsetp, int regno)
78 long *regp = (long *)fpregsetp;
80 /* FPCR is in slot 32. */
81 alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
86 alpha_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
88 if (regno == gdbarch_pc_regnum (gdbarch))
90 if (regno == ALPHA_UNIQUE_REGNUM)
91 return ALPHA_UNIQUE_PTRACE_ADDR;
92 if (regno < gdbarch_fp0_regnum (gdbarch))
93 return GPR_BASE + regno;
95 return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch);
98 void _initialialize_alpha_linux_nat (void);
101 _initialize_alpha_linux_nat (void)
103 linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset));