Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Low level Alpha interface, for GDB when running native. |
28e7fd62 | 2 | Copyright (C) 1993-2013 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
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 | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
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. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
e162d11b | 20 | #include "gdb_string.h" |
c906108c SS |
21 | #include "inferior.h" |
22 | #include "gdbcore.h" | |
23 | #include "target.h" | |
d1a7880c | 24 | #include "procfs.h" |
4e052eda | 25 | #include "regcache.h" |
dc129d82 JT |
26 | |
27 | #include "alpha-tdep.h" | |
28 | ||
c906108c | 29 | #include <sys/ptrace.h> |
f1e3ec29 | 30 | #include <alpha/coreregs.h> |
c906108c SS |
31 | #include <sys/user.h> |
32 | ||
c906108c | 33 | |
c906108c | 34 | /* Extract the register values out of the core file and store |
7157eed4 | 35 | them into REGCACHE. |
c906108c SS |
36 | |
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 | |
c5aa993b | 40 | on machines where they are discontiguous). |
c906108c | 41 | REG_ADDR is the offset from u.u_ar0 to the register values relative to |
c5aa993b JM |
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. | |
0963b4bd | 44 | Original upage address X is at location core_reg_sect+x+reg_addr. */ |
c906108c SS |
45 | |
46 | static void | |
9eefc95f UW |
47 | fetch_osf_core_registers (struct regcache *regcache, |
48 | char *core_reg_sect, unsigned core_reg_size, | |
fba45db2 | 49 | int which, CORE_ADDR reg_addr) |
c906108c | 50 | { |
ec7cc0e8 | 51 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
52f0bd74 AC |
52 | int regno; |
53 | int addr; | |
c906108c SS |
54 | int bad_reg = -1; |
55 | ||
f1e3ec29 AC |
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 | |
60 | same. */ | |
98a8e1e5 | 61 | static int const core_reg_mapping[ALPHA_NUM_REGS] = |
c906108c | 62 | { |
f1e3ec29 AC |
63 | #ifdef NCF_REGS |
64 | #define EFL NCF_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, | |
0963b4bd MS |
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, | |
515921d7 | 77 | CF_PC, -1, -1 |
f1e3ec29 | 78 | #else |
c906108c | 79 | #define EFL (EF_SIZE / 8) |
c5aa993b JM |
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, | |
0963b4bd MS |
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, | |
515921d7 | 92 | EF_PC, -1, -1 |
f1e3ec29 | 93 | #endif |
c906108c | 94 | }; |
c906108c | 95 | |
98a8e1e5 | 96 | for (regno = 0; regno < ALPHA_NUM_REGS; regno++) |
c906108c | 97 | { |
ec7cc0e8 | 98 | if (gdbarch_cannot_fetch_register (gdbarch, regno)) |
c906108c | 99 | { |
9eefc95f | 100 | regcache_raw_supply (regcache, regno, NULL); |
c906108c SS |
101 | continue; |
102 | } | |
4a1be8d2 PA |
103 | |
104 | if (regno == ALPHA_ZERO_REGNUM) | |
105 | { | |
106 | const gdb_byte zero[8] = { 0 }; | |
107 | ||
108 | regcache_raw_supply (regcache, regno, zero); | |
109 | continue; | |
110 | } | |
111 | ||
c906108c SS |
112 | addr = 8 * core_reg_mapping[regno]; |
113 | if (addr < 0 || addr >= core_reg_size) | |
114 | { | |
98a8e1e5 RH |
115 | /* ??? UNIQUE is a new addition. Don't generate an error. */ |
116 | if (regno == ALPHA_UNIQUE_REGNUM) | |
117 | { | |
9eefc95f | 118 | regcache_raw_supply (regcache, regno, NULL); |
98a8e1e5 RH |
119 | continue; |
120 | } | |
c906108c SS |
121 | if (bad_reg < 0) |
122 | bad_reg = regno; | |
123 | } | |
124 | else | |
125 | { | |
9eefc95f | 126 | regcache_raw_supply (regcache, regno, core_reg_sect + addr); |
c906108c SS |
127 | } |
128 | } | |
129 | if (bad_reg >= 0) | |
130 | { | |
c9f4d572 | 131 | error (_("Register %s not found in core file."), |
ec7cc0e8 | 132 | gdbarch_register_name (gdbarch, bad_reg)); |
c906108c SS |
133 | } |
134 | } | |
135 | ||
c906108c | 136 | |
c906108c | 137 | #include <sys/procfs.h> |
0963b4bd | 138 | /* Prototypes for supply_gregset etc. */ |
c60c0f5f MS |
139 | #include "gregset.h" |
140 | ||
0963b4bd MS |
141 | /* See the comment in m68k-tdep.c regarding the utility of these |
142 | functions. */ | |
c906108c | 143 | |
c5aa993b | 144 | void |
7f7fe91e | 145 | supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp) |
c906108c | 146 | { |
7f7fe91e | 147 | const long *regp = gregsetp->regs; |
c906108c | 148 | |
98a8e1e5 | 149 | /* PC is in slot 32. */ |
7f7fe91e | 150 | alpha_supply_int_regs (regcache, -1, regp, regp + 31, NULL); |
c906108c SS |
151 | } |
152 | ||
153 | void | |
7f7fe91e UW |
154 | fill_gregset (const struct regcache *regcache, |
155 | gdb_gregset_t *gregsetp, int regno) | |
c906108c | 156 | { |
efc72ef5 | 157 | long *regp = gregsetp->regs; |
c906108c | 158 | |
98a8e1e5 | 159 | /* PC is in slot 32. */ |
7f7fe91e | 160 | alpha_fill_int_regs (regcache, regno, regp, regp + 31, NULL); |
c906108c SS |
161 | } |
162 | ||
0963b4bd MS |
163 | /* Now we do the same thing for floating-point registers. |
164 | Again, see the comments in m68k-tdep.c. */ | |
c906108c SS |
165 | |
166 | void | |
7f7fe91e | 167 | supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp) |
c906108c | 168 | { |
7f7fe91e | 169 | const long *regp = fpregsetp->regs; |
c906108c | 170 | |
98a8e1e5 | 171 | /* FPCR is in slot 32. */ |
7f7fe91e | 172 | alpha_supply_fp_regs (regcache, -1, regp, regp + 31); |
c906108c SS |
173 | } |
174 | ||
175 | void | |
7f7fe91e UW |
176 | fill_fpregset (const struct regcache *regcache, |
177 | gdb_fpregset_t *fpregsetp, int regno) | |
c906108c | 178 | { |
efc72ef5 | 179 | long *regp = fpregsetp->regs; |
c906108c | 180 | |
98a8e1e5 | 181 | /* FPCR is in slot 32. */ |
7f7fe91e | 182 | alpha_fill_fp_regs (regcache, regno, regp, regp + 31); |
c906108c | 183 | } |
c906108c | 184 | \f |
c5aa993b | 185 | |
0963b4bd | 186 | /* Register that we are able to handle alpha core file formats. */ |
c906108c SS |
187 | |
188 | static struct core_fns alpha_osf_core_fns = | |
189 | { | |
190 | /* This really is bfd_target_unknown_flavour. */ | |
191 | ||
2acceee2 JM |
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 */ | |
196 | NULL /* next */ | |
c906108c SS |
197 | }; |
198 | ||
d1a7880c PA |
199 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
200 | extern initialize_file_ftype _initialize_alpha_nat; | |
201 | ||
c906108c | 202 | void |
d1a7880c | 203 | _initialize_alpha_nat (void) |
c906108c | 204 | { |
d1a7880c PA |
205 | struct target_ops *t; |
206 | ||
207 | t = procfs_target (); | |
208 | add_target (t); | |
209 | ||
00e32a35 | 210 | deprecated_add_core_fns (&alpha_osf_core_fns); |
c906108c | 211 | } |