1 /* Low level Alpha interface, for GDB when running native.
2 Copyright (C) 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003, 2007
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 2 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, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 #include "gdb_string.h"
29 #include "alpha-tdep.h"
31 #include <sys/ptrace.h>
32 #include <alpha/coreregs.h>
36 /* Extract the register values out of the core file and store
37 them where `read_register' will find them.
39 CORE_REG_SECT points to the register values themselves, read into memory.
40 CORE_REG_SIZE is the size of that area.
41 WHICH says which set of registers we are handling (0 = int, 2 = float
42 on machines where they are discontiguous).
43 REG_ADDR is the offset from u.u_ar0 to the register values relative to
44 core_reg_sect. This is used with old-fashioned core files to
45 locate the registers in a large upage-plus-stack ".reg" section.
46 Original upage address X is at location core_reg_sect+x+reg_addr.
50 fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size,
51 int which, CORE_ADDR reg_addr)
57 /* Table to map a gdb regnum to an index in the core register
58 section. The floating point register values are garbage in
59 OSF/1.2 core files. OSF5 uses different names for the register
60 enum list, need to handle two cases. The actual values are the
62 static int const core_reg_mapping[ALPHA_NUM_REGS] =
66 CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6,
67 CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6,
68 CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9,
69 CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_SP, -1,
70 EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
71 EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
72 EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
73 EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
76 #define EFL (EF_SIZE / 8)
77 EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
78 EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
79 EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9,
80 EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1,
81 EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
82 EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
83 EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
84 EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
89 for (regno = 0; regno < ALPHA_NUM_REGS; regno++)
91 if (CANNOT_FETCH_REGISTER (regno))
93 regcache_raw_supply (current_regcache, regno, NULL);
96 addr = 8 * core_reg_mapping[regno];
97 if (addr < 0 || addr >= core_reg_size)
99 /* ??? UNIQUE is a new addition. Don't generate an error. */
100 if (regno == ALPHA_UNIQUE_REGNUM)
102 regcache_raw_supply (current_regcache, regno, NULL);
110 regcache_raw_supply (current_regcache, regno, core_reg_sect + addr);
115 error (_("Register %s not found in core file."), REGISTER_NAME (bad_reg));
120 /* Map gdb internal register number to a ptrace ``address''.
121 These ``addresses'' are defined in <sys/ptrace.h>, with
122 the exception of ALPHA_UNIQUE_PTRACE_ADDR. */
124 #define ALPHA_UNIQUE_PTRACE_ADDR 0
127 register_addr (int regno, CORE_ADDR blockend)
129 if (regno == PC_REGNUM)
131 if (regno == ALPHA_UNIQUE_REGNUM)
132 return ALPHA_UNIQUE_PTRACE_ADDR;
133 if (regno < FP0_REGNUM)
134 return GPR_BASE + regno;
136 return FPR_BASE + regno - FP0_REGNUM;
142 return (sizeof (struct user));
145 #if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T)
146 #include <sys/procfs.h>
148 /* Prototypes for supply_gregset etc. */
152 * See the comment in m68k-tdep.c regarding the utility of these functions.
156 supply_gregset (gdb_gregset_t *gregsetp)
158 long *regp = gregsetp->regs;
160 /* PC is in slot 32. */
161 alpha_supply_int_regs (current_regcache, -1, regp, regp + 31, NULL);
165 fill_gregset (gdb_gregset_t *gregsetp, int regno)
167 long *regp = gregsetp->regs;
169 /* PC is in slot 32. */
170 alpha_fill_int_regs (current_regcache, regno, regp, regp + 31, NULL);
174 * Now we do the same thing for floating-point registers.
175 * Again, see the comments in m68k-tdep.c.
179 supply_fpregset (gdb_fpregset_t *fpregsetp)
181 long *regp = fpregsetp->regs;
183 /* FPCR is in slot 32. */
184 alpha_supply_fp_regs (current_regcache, -1, regp, regp + 31);
188 fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
190 long *regp = fpregsetp->regs;
192 /* FPCR is in slot 32. */
193 alpha_fill_fp_regs (current_regcache, regno, regp, regp + 31);
198 /* Register that we are able to handle alpha core file formats. */
200 static struct core_fns alpha_osf_core_fns =
202 /* This really is bfd_target_unknown_flavour. */
204 bfd_target_unknown_flavour, /* core_flavour */
205 default_check_format, /* check_format */
206 default_core_sniffer, /* core_sniffer */
207 fetch_osf_core_registers, /* core_read_registers */
212 _initialize_core_alpha (void)
214 deprecated_add_core_fns (&alpha_osf_core_fns);