1 /* Low level Alpha interface, for GDB when running native.
2 Copyright (C) 1993-2013 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/>. */
20 #include "gdb_string.h"
27 #include "alpha-tdep.h"
29 #include <sys/ptrace.h>
30 #include <alpha/coreregs.h>
34 /* Extract the register values out of the core file and store
37 CORE_REG_SECT points to the register values themselves, read into memory.
38 CORE_REG_SIZE is the size of that area.
39 WHICH says which set of registers we are handling (0 = int, 2 = float
40 on machines where they are discontiguous).
41 REG_ADDR is the offset from u.u_ar0 to the register values relative to
42 core_reg_sect. This is used with old-fashioned core files to
43 locate the registers in a large upage-plus-stack ".reg" section.
44 Original upage address X is at location core_reg_sect+x+reg_addr. */
47 fetch_osf_core_registers (struct regcache *regcache,
48 char *core_reg_sect, unsigned core_reg_size,
49 int which, CORE_ADDR reg_addr)
51 struct gdbarch *gdbarch = get_regcache_arch (regcache);
56 /* Table to map a gdb regnum to an index in the core register
57 section. The floating point register values are garbage in
58 OSF/1.2 core files. OSF5 uses different names for the register
59 enum list, need to handle two cases. The actual values are the
61 static int const core_reg_mapping[ALPHA_NUM_REGS] =
65 CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6,
66 CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6,
67 CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9,
68 CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_SP, -1,
69 EFL + 0, EFL + 1, EFL + 2, EFL + 3,
70 EFL + 4, EFL + 5, EFL + 6, EFL + 7,
71 EFL + 8, EFL + 9, EFL + 10, EFL + 11,
72 EFL + 12, EFL + 13, EFL + 14, EFL + 15,
73 EFL + 16, EFL + 17, EFL + 18, EFL + 19,
74 EFL + 20, EFL + 21, EFL + 22, EFL + 23,
75 EFL + 24, EFL + 25, EFL + 26, EFL + 27,
76 EFL + 28, EFL + 29, EFL + 30, EFL + 31,
79 #define EFL (EF_SIZE / 8)
80 EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
81 EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
82 EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9,
83 EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1,
84 EFL + 0, EFL + 1, EFL + 2, EFL + 3,
85 EFL + 4, EFL + 5, EFL + 6, EFL + 7,
86 EFL + 8, EFL + 9, EFL + 10, EFL + 11,
87 EFL + 12, EFL + 13, EFL + 14, EFL + 15,
88 EFL + 16, EFL + 17, EFL + 18, EFL + 19,
89 EFL + 20, EFL + 21, EFL + 22, EFL + 23,
90 EFL + 24, EFL + 25, EFL + 26, EFL + 27,
91 EFL + 28, EFL + 29, EFL + 30, EFL + 31,
96 for (regno = 0; regno < ALPHA_NUM_REGS; regno++)
98 if (gdbarch_cannot_fetch_register (gdbarch, regno))
100 regcache_raw_supply (regcache, regno, NULL);
104 if (regno == ALPHA_ZERO_REGNUM)
106 const gdb_byte zero[8] = { 0 };
108 regcache_raw_supply (regcache, regno, zero);
112 addr = 8 * core_reg_mapping[regno];
113 if (addr < 0 || addr >= core_reg_size)
115 /* ??? UNIQUE is a new addition. Don't generate an error. */
116 if (regno == ALPHA_UNIQUE_REGNUM)
118 regcache_raw_supply (regcache, regno, NULL);
126 regcache_raw_supply (regcache, regno, core_reg_sect + addr);
131 error (_("Register %s not found in core file."),
132 gdbarch_register_name (gdbarch, bad_reg));
137 #include <sys/procfs.h>
138 /* Prototypes for supply_gregset etc. */
141 /* See the comment in m68k-tdep.c regarding the utility of these
145 supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
147 const long *regp = gregsetp->regs;
149 /* PC is in slot 32. */
150 alpha_supply_int_regs (regcache, -1, regp, regp + 31, NULL);
154 fill_gregset (const struct regcache *regcache,
155 gdb_gregset_t *gregsetp, int regno)
157 long *regp = gregsetp->regs;
159 /* PC is in slot 32. */
160 alpha_fill_int_regs (regcache, regno, regp, regp + 31, NULL);
163 /* Now we do the same thing for floating-point registers.
164 Again, see the comments in m68k-tdep.c. */
167 supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
169 const long *regp = fpregsetp->regs;
171 /* FPCR is in slot 32. */
172 alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
176 fill_fpregset (const struct regcache *regcache,
177 gdb_fpregset_t *fpregsetp, int regno)
179 long *regp = fpregsetp->regs;
181 /* FPCR is in slot 32. */
182 alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
186 /* Register that we are able to handle alpha core file formats. */
188 static struct core_fns alpha_osf_core_fns =
190 /* This really is bfd_target_unknown_flavour. */
192 bfd_target_unknown_flavour, /* core_flavour */
193 default_check_format, /* check_format */
194 default_core_sniffer, /* core_sniffer */
195 fetch_osf_core_registers, /* core_read_registers */
199 /* Provide a prototype to silence -Wmissing-prototypes. */
200 extern initialize_file_ftype _initialize_alpha_nat;
203 _initialize_alpha_nat (void)
205 struct target_ops *t;
207 t = procfs_target ();
210 deprecated_add_core_fns (&alpha_osf_core_fns);