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/tmp/gdb-7.10/gdb/alpha-linux-nat.c
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1 /* Low level Alpha GNU/Linux interface, for GDB when running native.
2  Copyright (C) 2005-2015 Free Software Foundation, Inc.
3 
4  This file is part of GDB.
5 
6  This program is free software; you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation; either version 3 of the License, or
9  (at your option) any later version.
10 
11  This program is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 
19 #include "defs.h"
20 #include "target.h"
21 #include "regcache.h"
22 #include "linux-nat.h"
23 
24 #include "alpha-tdep.h"
25 
26 #include <sys/ptrace.h>
27 #include <alpha/ptrace.h>
28 
29 #include <sys/procfs.h>
30 #include "gregset.h"
31 
32 /* The address of UNIQUE for ptrace. */
33 #define ALPHA_UNIQUE_PTRACE_ADDR 65
34 
35 
36 /* See the comment in m68k-tdep.c regarding the utility of these
37  functions. */
38 
39 void
40 supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
41 {
42  const long *regp = (const long *)gregsetp;
43 
44  /* PC is in slot 32, UNIQUE is in slot 33. */
45  alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32);
46 }
47 
48 void
50  gdb_gregset_t *gregsetp, int regno)
51 {
52  long *regp = (long *)gregsetp;
53 
54  /* PC is in slot 32, UNIQUE is in slot 33. */
55  alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32);
56 }
57 
58 /* Now we do the same thing for floating-point registers.
59  Again, see the comments in m68k-tdep.c. */
60 
61 void
62 supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
63 {
64  const long *regp = (const long *)fpregsetp;
65 
66  /* FPCR is in slot 32. */
67  alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
68 }
69 
70 void
72  gdb_fpregset_t *fpregsetp, int regno)
73 {
74  long *regp = (long *)fpregsetp;
75 
76  /* FPCR is in slot 32. */
77  alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
78 }
79 
80 
81 static CORE_ADDR
82 alpha_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
83 {
84  if (regno == gdbarch_pc_regnum (gdbarch))
85  return PC;
86  if (regno == ALPHA_UNIQUE_REGNUM)
88  if (regno < gdbarch_fp0_regnum (gdbarch))
89  return GPR_BASE + regno;
90  else
91  return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch);
92 }
93 
94 void _initialize_alpha_linux_nat (void);
95 
96 void
98 {
100 }
#define PC
void alpha_supply_int_regs(struct regcache *regcache, int regno, const void *r0_r30, const void *pc, const void *unique)
Definition: alpha-tdep.c:1499
bfd_vma CORE_ADDR
Definition: common-types.h:41
void alpha_fill_int_regs(const struct regcache *regcache, int regno, void *r0_r30, void *pc, void *unique)
Definition: alpha-tdep.c:1524
#define ALPHA_UNIQUE_REGNUM
Definition: alpha-tdep.h:51
void alpha_fill_fp_regs(const struct regcache *regcache, int regno, void *f0_f30, void *fpcr)
Definition: alpha-tdep.c:1558
void supply_gregset(struct regcache *regcache, const gdb_gregset_t *gregsetp)
GDB_GREGSET_T gdb_gregset_t
Definition: gregset.h:34
void fill_gregset(const struct regcache *regcache, gdb_gregset_t *gregsetp, int regno)
#define ALPHA_UNIQUE_PTRACE_ADDR
GDB_FPREGSET_T gdb_fpregset_t
Definition: gregset.h:35
static CORE_ADDR alpha_linux_register_u_offset(struct gdbarch *gdbarch, int regno, int store_p)
void supply_fpregset(struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
void linux_nat_add_target(struct target_ops *t)
Definition: linux-nat.c:4972
void fill_fpregset(const struct regcache *regcache, gdb_fpregset_t *fpregsetp, int regno)
#define FPR_BASE
int gdbarch_fp0_regnum(struct gdbarch *gdbarch)
Definition: gdbarch.c:2032
int gdbarch_pc_regnum(struct gdbarch *gdbarch)
Definition: gdbarch.c:1998
void alpha_supply_fp_regs(struct regcache *regcache, int regno, const void *f0_f30, const void *fpcr)
Definition: alpha-tdep.c:1542
void _initialize_alpha_linux_nat(void)
struct target_ops * linux_trad_target(CORE_ADDR(*register_u_offset)(struct gdbarch *, int, int))
Definition: linux-nat.c:4555