1 /* Low level Alpha interface, for GDB when running native.
2 Copyright (C) 1993-2014 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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/>. */
26 #include "alpha-tdep.h"
28 #include <sys/ptrace.h>
29 #include <alpha/coreregs.h>
33 /* Extract the register values out of the core file and store
36 CORE_REG_SECT points to the register values themselves, read into memory.
37 CORE_REG_SIZE is the size of that area.
38 WHICH says which set of registers we are handling (0 = int, 2 = float
39 on machines where they are discontiguous).
40 REG_ADDR is the offset from u.u_ar0 to the register values relative to
41 core_reg_sect. This is used with old-fashioned core files to
42 locate the registers in a large upage-plus-stack ".reg" section.
43 Original upage address X is at location core_reg_sect+x+reg_addr. */
46 fetch_osf_core_registers (struct regcache
*regcache
,
47 char *core_reg_sect
, unsigned core_reg_size
,
48 int which
, CORE_ADDR reg_addr
)
50 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
55 /* Table to map a gdb regnum to an index in the core register
56 section. The floating point register values are garbage in
57 OSF/1.2 core files. OSF5 uses different names for the register
58 enum list, need to handle two cases. The actual values are the
60 static int const core_reg_mapping
[ALPHA_NUM_REGS
] =
64 CF_V0
, CF_T0
, CF_T1
, CF_T2
, CF_T3
, CF_T4
, CF_T5
, CF_T6
,
65 CF_T7
, CF_S0
, CF_S1
, CF_S2
, CF_S3
, CF_S4
, CF_S5
, CF_S6
,
66 CF_A0
, CF_A1
, CF_A2
, CF_A3
, CF_A4
, CF_A5
, CF_T8
, CF_T9
,
67 CF_T10
, CF_T11
, CF_RA
, CF_T12
, CF_AT
, CF_GP
, CF_SP
, -1,
68 EFL
+ 0, EFL
+ 1, EFL
+ 2, EFL
+ 3,
69 EFL
+ 4, EFL
+ 5, EFL
+ 6, EFL
+ 7,
70 EFL
+ 8, EFL
+ 9, EFL
+ 10, EFL
+ 11,
71 EFL
+ 12, EFL
+ 13, EFL
+ 14, EFL
+ 15,
72 EFL
+ 16, EFL
+ 17, EFL
+ 18, EFL
+ 19,
73 EFL
+ 20, EFL
+ 21, EFL
+ 22, EFL
+ 23,
74 EFL
+ 24, EFL
+ 25, EFL
+ 26, EFL
+ 27,
75 EFL
+ 28, EFL
+ 29, EFL
+ 30, EFL
+ 31,
78 #define EFL (EF_SIZE / 8)
79 EF_V0
, EF_T0
, EF_T1
, EF_T2
, EF_T3
, EF_T4
, EF_T5
, EF_T6
,
80 EF_T7
, EF_S0
, EF_S1
, EF_S2
, EF_S3
, EF_S4
, EF_S5
, EF_S6
,
81 EF_A0
, EF_A1
, EF_A2
, EF_A3
, EF_A4
, EF_A5
, EF_T8
, EF_T9
,
82 EF_T10
, EF_T11
, EF_RA
, EF_T12
, EF_AT
, EF_GP
, EF_SP
, -1,
83 EFL
+ 0, EFL
+ 1, EFL
+ 2, EFL
+ 3,
84 EFL
+ 4, EFL
+ 5, EFL
+ 6, EFL
+ 7,
85 EFL
+ 8, EFL
+ 9, EFL
+ 10, EFL
+ 11,
86 EFL
+ 12, EFL
+ 13, EFL
+ 14, EFL
+ 15,
87 EFL
+ 16, EFL
+ 17, EFL
+ 18, EFL
+ 19,
88 EFL
+ 20, EFL
+ 21, EFL
+ 22, EFL
+ 23,
89 EFL
+ 24, EFL
+ 25, EFL
+ 26, EFL
+ 27,
90 EFL
+ 28, EFL
+ 29, EFL
+ 30, EFL
+ 31,
95 for (regno
= 0; regno
< ALPHA_NUM_REGS
; regno
++)
97 if (gdbarch_cannot_fetch_register (gdbarch
, regno
))
99 regcache_raw_supply (regcache
, regno
, NULL
);
103 if (regno
== ALPHA_ZERO_REGNUM
)
105 const gdb_byte zero
[8] = { 0 };
107 regcache_raw_supply (regcache
, regno
, zero
);
111 addr
= 8 * core_reg_mapping
[regno
];
112 if (addr
< 0 || addr
>= core_reg_size
)
114 /* ??? UNIQUE is a new addition. Don't generate an error. */
115 if (regno
== ALPHA_UNIQUE_REGNUM
)
117 regcache_raw_supply (regcache
, regno
, NULL
);
125 regcache_raw_supply (regcache
, regno
, core_reg_sect
+ addr
);
130 error (_("Register %s not found in core file."),
131 gdbarch_register_name (gdbarch
, bad_reg
));
136 #include <sys/procfs.h>
137 /* Prototypes for supply_gregset etc. */
140 /* See the comment in m68k-tdep.c regarding the utility of these
144 supply_gregset (struct regcache
*regcache
, const gdb_gregset_t
*gregsetp
)
146 const long *regp
= gregsetp
->regs
;
148 /* PC is in slot 32. */
149 alpha_supply_int_regs (regcache
, -1, regp
, regp
+ 31, NULL
);
153 fill_gregset (const struct regcache
*regcache
,
154 gdb_gregset_t
*gregsetp
, int regno
)
156 long *regp
= gregsetp
->regs
;
158 /* PC is in slot 32. */
159 alpha_fill_int_regs (regcache
, regno
, regp
, regp
+ 31, NULL
);
162 /* Now we do the same thing for floating-point registers.
163 Again, see the comments in m68k-tdep.c. */
166 supply_fpregset (struct regcache
*regcache
, const gdb_fpregset_t
*fpregsetp
)
168 const long *regp
= fpregsetp
->regs
;
170 /* FPCR is in slot 32. */
171 alpha_supply_fp_regs (regcache
, -1, regp
, regp
+ 31);
175 fill_fpregset (const struct regcache
*regcache
,
176 gdb_fpregset_t
*fpregsetp
, int regno
)
178 long *regp
= fpregsetp
->regs
;
180 /* FPCR is in slot 32. */
181 alpha_fill_fp_regs (regcache
, regno
, regp
, regp
+ 31);
185 /* Register that we are able to handle alpha core file formats. */
187 static struct core_fns alpha_osf_core_fns
=
189 /* This really is bfd_target_unknown_flavour. */
191 bfd_target_unknown_flavour
, /* core_flavour */
192 default_check_format
, /* check_format */
193 default_core_sniffer
, /* core_sniffer */
194 fetch_osf_core_registers
, /* core_read_registers */
198 /* Provide a prototype to silence -Wmissing-prototypes. */
199 extern initialize_file_ftype _initialize_alpha_nat
;
202 _initialize_alpha_nat (void)
204 struct target_ops
*t
;
206 t
= procfs_target ();
209 deprecated_add_core_fns (&alpha_osf_core_fns
);