Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Low level Alpha interface, for GDB when running native. |
6aba47ca | 2 | Copyright (C) 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003, 2007 |
b6ba6518 | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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. | |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b JM |
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 | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e162d11b | 23 | #include "gdb_string.h" |
c906108c SS |
24 | #include "inferior.h" |
25 | #include "gdbcore.h" | |
26 | #include "target.h" | |
4e052eda | 27 | #include "regcache.h" |
dc129d82 JT |
28 | |
29 | #include "alpha-tdep.h" | |
30 | ||
c906108c | 31 | #include <sys/ptrace.h> |
f1e3ec29 | 32 | #include <alpha/coreregs.h> |
c906108c SS |
33 | #include <sys/user.h> |
34 | ||
c906108c | 35 | |
c906108c SS |
36 | /* Extract the register values out of the core file and store |
37 | them where `read_register' will find them. | |
38 | ||
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 | |
c5aa993b | 42 | on machines where they are discontiguous). |
c906108c | 43 | REG_ADDR is the offset from u.u_ar0 to the register values relative to |
c5aa993b JM |
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. | |
c906108c SS |
47 | */ |
48 | ||
49 | static void | |
fba45db2 KB |
50 | fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size, |
51 | int which, CORE_ADDR reg_addr) | |
c906108c | 52 | { |
52f0bd74 AC |
53 | int regno; |
54 | int addr; | |
c906108c SS |
55 | int bad_reg = -1; |
56 | ||
f1e3ec29 AC |
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 | |
61 | same. */ | |
98a8e1e5 | 62 | static int const core_reg_mapping[ALPHA_NUM_REGS] = |
c906108c | 63 | { |
f1e3ec29 AC |
64 | #ifdef NCF_REGS |
65 | #define EFL NCF_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, | |
515921d7 | 74 | CF_PC, -1, -1 |
f1e3ec29 | 75 | #else |
c906108c | 76 | #define EFL (EF_SIZE / 8) |
c5aa993b JM |
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, | |
515921d7 | 85 | EF_PC, -1, -1 |
f1e3ec29 | 86 | #endif |
c906108c | 87 | }; |
c906108c | 88 | |
98a8e1e5 | 89 | for (regno = 0; regno < ALPHA_NUM_REGS; regno++) |
c906108c SS |
90 | { |
91 | if (CANNOT_FETCH_REGISTER (regno)) | |
92 | { | |
23a6d369 | 93 | regcache_raw_supply (current_regcache, regno, NULL); |
c906108c SS |
94 | continue; |
95 | } | |
96 | addr = 8 * core_reg_mapping[regno]; | |
97 | if (addr < 0 || addr >= core_reg_size) | |
98 | { | |
98a8e1e5 RH |
99 | /* ??? UNIQUE is a new addition. Don't generate an error. */ |
100 | if (regno == ALPHA_UNIQUE_REGNUM) | |
101 | { | |
23a6d369 | 102 | regcache_raw_supply (current_regcache, regno, NULL); |
98a8e1e5 RH |
103 | continue; |
104 | } | |
c906108c SS |
105 | if (bad_reg < 0) |
106 | bad_reg = regno; | |
107 | } | |
108 | else | |
109 | { | |
23a6d369 | 110 | regcache_raw_supply (current_regcache, regno, core_reg_sect + addr); |
c906108c SS |
111 | } |
112 | } | |
113 | if (bad_reg >= 0) | |
114 | { | |
edefbb7c | 115 | error (_("Register %s not found in core file."), REGISTER_NAME (bad_reg)); |
c906108c SS |
116 | } |
117 | } | |
118 | ||
c906108c SS |
119 | |
120 | /* Map gdb internal register number to a ptrace ``address''. | |
87d1b352 RH |
121 | These ``addresses'' are defined in <sys/ptrace.h>, with |
122 | the exception of ALPHA_UNIQUE_PTRACE_ADDR. */ | |
c906108c | 123 | |
87d1b352 | 124 | #define ALPHA_UNIQUE_PTRACE_ADDR 0 |
c906108c SS |
125 | |
126 | CORE_ADDR | |
fba45db2 | 127 | register_addr (int regno, CORE_ADDR blockend) |
c906108c | 128 | { |
87d1b352 RH |
129 | if (regno == PC_REGNUM) |
130 | return PC; | |
131 | if (regno == ALPHA_UNIQUE_REGNUM) | |
132 | return ALPHA_UNIQUE_PTRACE_ADDR; | |
133 | if (regno < FP0_REGNUM) | |
134 | return GPR_BASE + regno; | |
135 | else | |
136 | return FPR_BASE + regno - FP0_REGNUM; | |
c906108c SS |
137 | } |
138 | ||
139 | int | |
fba45db2 | 140 | kernel_u_size (void) |
c906108c SS |
141 | { |
142 | return (sizeof (struct user)); | |
143 | } | |
144 | ||
145 | #if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T) | |
146 | #include <sys/procfs.h> | |
147 | ||
c60c0f5f MS |
148 | /* Prototypes for supply_gregset etc. */ |
149 | #include "gregset.h" | |
150 | ||
c906108c SS |
151 | /* |
152 | * See the comment in m68k-tdep.c regarding the utility of these functions. | |
153 | */ | |
154 | ||
c5aa993b | 155 | void |
7f7fe91e | 156 | supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp) |
c906108c | 157 | { |
7f7fe91e | 158 | const long *regp = gregsetp->regs; |
c906108c | 159 | |
98a8e1e5 | 160 | /* PC is in slot 32. */ |
7f7fe91e | 161 | alpha_supply_int_regs (regcache, -1, regp, regp + 31, NULL); |
c906108c SS |
162 | } |
163 | ||
164 | void | |
7f7fe91e UW |
165 | fill_gregset (const struct regcache *regcache, |
166 | gdb_gregset_t *gregsetp, int regno) | |
c906108c | 167 | { |
efc72ef5 | 168 | long *regp = gregsetp->regs; |
c906108c | 169 | |
98a8e1e5 | 170 | /* PC is in slot 32. */ |
7f7fe91e | 171 | alpha_fill_int_regs (regcache, regno, regp, regp + 31, NULL); |
c906108c SS |
172 | } |
173 | ||
174 | /* | |
175 | * Now we do the same thing for floating-point registers. | |
176 | * Again, see the comments in m68k-tdep.c. | |
177 | */ | |
178 | ||
179 | void | |
7f7fe91e | 180 | supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp) |
c906108c | 181 | { |
7f7fe91e | 182 | const long *regp = fpregsetp->regs; |
c906108c | 183 | |
98a8e1e5 | 184 | /* FPCR is in slot 32. */ |
7f7fe91e | 185 | alpha_supply_fp_regs (regcache, -1, regp, regp + 31); |
c906108c SS |
186 | } |
187 | ||
188 | void | |
7f7fe91e UW |
189 | fill_fpregset (const struct regcache *regcache, |
190 | gdb_fpregset_t *fpregsetp, int regno) | |
c906108c | 191 | { |
efc72ef5 | 192 | long *regp = fpregsetp->regs; |
c906108c | 193 | |
98a8e1e5 | 194 | /* FPCR is in slot 32. */ |
7f7fe91e | 195 | alpha_fill_fp_regs (regcache, regno, regp, regp + 31); |
c906108c SS |
196 | } |
197 | #endif | |
c906108c | 198 | \f |
c5aa993b | 199 | |
c906108c SS |
200 | /* Register that we are able to handle alpha core file formats. */ |
201 | ||
202 | static struct core_fns alpha_osf_core_fns = | |
203 | { | |
204 | /* This really is bfd_target_unknown_flavour. */ | |
205 | ||
2acceee2 JM |
206 | bfd_target_unknown_flavour, /* core_flavour */ |
207 | default_check_format, /* check_format */ | |
208 | default_core_sniffer, /* core_sniffer */ | |
209 | fetch_osf_core_registers, /* core_read_registers */ | |
210 | NULL /* next */ | |
c906108c SS |
211 | }; |
212 | ||
c906108c | 213 | void |
fba45db2 | 214 | _initialize_core_alpha (void) |
c906108c | 215 | { |
00e32a35 | 216 | deprecated_add_core_fns (&alpha_osf_core_fns); |
c906108c | 217 | } |