1 /* Low level Alpha interface, for GDB when running native.
2 Copyright (C) 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003, 2007, 2008,
3 2009 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/>. */
21 #include "gdb_string.h"
28 #include "alpha-tdep.h"
30 #include <sys/ptrace.h>
31 #include <alpha/coreregs.h>
35 /* Extract the register values out of the core file and store
38 CORE_REG_SECT points to the register values themselves, read into memory.
39 CORE_REG_SIZE is the size of that area.
40 WHICH says which set of registers we are handling (0 = int, 2 = float
41 on machines where they are discontiguous).
42 REG_ADDR is the offset from u.u_ar0 to the register values relative to
43 core_reg_sect. This is used with old-fashioned core files to
44 locate the registers in a large upage-plus-stack ".reg" section.
45 Original upage address X is at location core_reg_sect+x+reg_addr.
49 fetch_osf_core_registers (struct regcache *regcache,
50 char *core_reg_sect, unsigned core_reg_size,
51 int which, CORE_ADDR reg_addr)
53 struct gdbarch *gdbarch = get_regcache_arch (regcache);
58 /* Table to map a gdb regnum to an index in the core register
59 section. The floating point register values are garbage in
60 OSF/1.2 core files. OSF5 uses different names for the register
61 enum list, need to handle two cases. The actual values are the
63 static int const core_reg_mapping[ALPHA_NUM_REGS] =
67 CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6,
68 CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6,
69 CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9,
70 CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_SP, -1,
71 EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
72 EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
73 EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
74 EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
77 #define EFL (EF_SIZE / 8)
78 EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
79 EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
80 EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9,
81 EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1,
82 EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
83 EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
84 EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
85 EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
90 for (regno = 0; regno < ALPHA_NUM_REGS; regno++)
92 if (gdbarch_cannot_fetch_register (gdbarch, regno))
94 regcache_raw_supply (regcache, regno, NULL);
97 addr = 8 * core_reg_mapping[regno];
98 if (addr < 0 || addr >= core_reg_size)
100 /* ??? UNIQUE is a new addition. Don't generate an error. */
101 if (regno == ALPHA_UNIQUE_REGNUM)
103 regcache_raw_supply (regcache, regno, NULL);
111 regcache_raw_supply (regcache, regno, core_reg_sect + addr);
116 error (_("Register %s not found in core file."),
117 gdbarch_register_name (gdbarch, bad_reg));
122 #include <sys/procfs.h>
123 /* Prototypes for supply_gregset etc. */
127 * See the comment in m68k-tdep.c regarding the utility of these functions.
131 supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
133 const long *regp = gregsetp->regs;
135 /* PC is in slot 32. */
136 alpha_supply_int_regs (regcache, -1, regp, regp + 31, NULL);
140 fill_gregset (const struct regcache *regcache,
141 gdb_gregset_t *gregsetp, int regno)
143 long *regp = gregsetp->regs;
145 /* PC is in slot 32. */
146 alpha_fill_int_regs (regcache, regno, regp, regp + 31, NULL);
150 * Now we do the same thing for floating-point registers.
151 * Again, see the comments in m68k-tdep.c.
155 supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
157 const long *regp = fpregsetp->regs;
159 /* FPCR is in slot 32. */
160 alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
164 fill_fpregset (const struct regcache *regcache,
165 gdb_fpregset_t *fpregsetp, int regno)
167 long *regp = fpregsetp->regs;
169 /* FPCR is in slot 32. */
170 alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
174 /* Register that we are able to handle alpha core file formats. */
176 static struct core_fns alpha_osf_core_fns =
178 /* This really is bfd_target_unknown_flavour. */
180 bfd_target_unknown_flavour, /* core_flavour */
181 default_check_format, /* check_format */
182 default_core_sniffer, /* core_sniffer */
183 fetch_osf_core_registers, /* core_read_registers */
187 /* Provide a prototype to silence -Wmissing-prototypes. */
188 extern initialize_file_ftype _initialize_alpha_nat;
191 _initialize_alpha_nat (void)
193 struct target_ops *t;
195 t = procfs_target ();
198 deprecated_add_core_fns (&alpha_osf_core_fns);