]>
Commit | Line | Data |
---|---|---|
448628fe | 1 | /* Native-dependent code for Alpha BSD's. |
07681759 | 2 | |
e2882c85 | 3 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
448628fe MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
448628fe MK |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
448628fe MK |
19 | |
20 | #include "defs.h" | |
21 | #include "inferior.h" | |
4e052eda | 22 | #include "regcache.h" |
448628fe | 23 | |
dc129d82 | 24 | #include "alpha-tdep.h" |
03b62bbb | 25 | #include "alpha-bsd-tdep.h" |
0d6e4ad7 | 26 | #include "inf-ptrace.h" |
dc129d82 | 27 | |
448628fe MK |
28 | #include <sys/types.h> |
29 | #include <sys/ptrace.h> | |
30 | #include <machine/reg.h> | |
31 | ||
32 | #ifdef HAVE_SYS_PROCFS_H | |
33 | #include <sys/procfs.h> | |
34 | #endif | |
35 | ||
36 | #ifndef HAVE_GREGSET_T | |
37 | typedef struct reg gregset_t; | |
38 | #endif | |
39 | ||
12bcb0fe JT |
40 | #ifndef HAVE_FPREGSET_T |
41 | typedef struct fpreg fpregset_t; | |
42 | #endif | |
448628fe MK |
43 | |
44 | #include "gregset.h" | |
45 | ||
f6ac5f3d PA |
46 | struct alpha_bsd_nat_target final : public inf_ptrace_target |
47 | { | |
48 | void fetch_registers (struct regcache *, int) override; | |
49 | void store_registers (struct regcache *, int) override; | |
50 | }; | |
51 | ||
52 | static alpha_bsd_nat_target the_alpha_bsd_nat_target; | |
53 | ||
12bcb0fe JT |
54 | /* Provide *regset() wrappers around the generic Alpha BSD register |
55 | supply/fill routines. */ | |
448628fe MK |
56 | |
57 | void | |
7f7fe91e | 58 | supply_gregset (struct regcache *regcache, const gregset_t *gregsetp) |
448628fe | 59 | { |
7f7fe91e | 60 | alphabsd_supply_reg (regcache, (const char *) gregsetp, -1); |
448628fe MK |
61 | } |
62 | ||
448628fe | 63 | void |
7f7fe91e | 64 | fill_gregset (const struct regcache *regcache, gregset_t *gregsetp, int regno) |
448628fe | 65 | { |
7f7fe91e | 66 | alphabsd_fill_reg (regcache, (char *) gregsetp, regno); |
448628fe MK |
67 | } |
68 | ||
448628fe | 69 | void |
7f7fe91e | 70 | supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp) |
448628fe | 71 | { |
7f7fe91e | 72 | alphabsd_supply_fpreg (regcache, (const char *) fpregsetp, -1); |
448628fe MK |
73 | } |
74 | ||
448628fe | 75 | void |
0963b4bd MS |
76 | fill_fpregset (const struct regcache *regcache, |
77 | fpregset_t *fpregsetp, int regno) | |
448628fe | 78 | { |
7f7fe91e | 79 | alphabsd_fill_fpreg (regcache, (char *) fpregsetp, regno); |
448628fe | 80 | } |
12bcb0fe | 81 | \f |
e771a871 JT |
82 | /* Determine if PT_GETREGS fetches this register. */ |
83 | ||
84 | static int | |
85 | getregs_supplies (int regno) | |
86 | { | |
dc129d82 | 87 | return ((regno >= ALPHA_V0_REGNUM && regno <= ALPHA_ZERO_REGNUM) |
07681759 | 88 | || regno >= ALPHA_PC_REGNUM); |
e771a871 JT |
89 | } |
90 | ||
448628fe MK |
91 | /* Fetch register REGNO from the inferior. If REGNO is -1, do this |
92 | for all registers (including the floating point registers). */ | |
93 | ||
f6ac5f3d PA |
94 | void |
95 | alpha_bsd_nat_target::fetch_registers (struct regcache *regcache, int regno) | |
448628fe | 96 | { |
e771a871 JT |
97 | if (regno == -1 || getregs_supplies (regno)) |
98 | { | |
12bcb0fe | 99 | struct reg gregs; |
e771a871 | 100 | |
e99b03dc | 101 | if (ptrace (PT_GETREGS, regcache->ptid ().pid (), |
9f8e0089 | 102 | (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
edefbb7c | 103 | perror_with_name (_("Couldn't get registers")); |
448628fe | 104 | |
56be3814 | 105 | alphabsd_supply_reg (regcache, (char *) &gregs, regno); |
e771a871 JT |
106 | if (regno != -1) |
107 | return; | |
108 | } | |
448628fe | 109 | |
0963b4bd | 110 | if (regno == -1 |
ac7936df | 111 | || regno >= gdbarch_fp0_regnum (regcache->arch ())) |
448628fe | 112 | { |
12bcb0fe | 113 | struct fpreg fpregs; |
448628fe | 114 | |
e99b03dc | 115 | if (ptrace (PT_GETFPREGS, regcache->ptid ().pid (), |
9f8e0089 | 116 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 117 | perror_with_name (_("Couldn't get floating point status")); |
448628fe | 118 | |
56be3814 | 119 | alphabsd_supply_fpreg (regcache, (char *) &fpregs, regno); |
448628fe | 120 | } |
448628fe MK |
121 | } |
122 | ||
123 | /* Store register REGNO back into the inferior. If REGNO is -1, do | |
124 | this for all registers (including the floating point registers). */ | |
125 | ||
f6ac5f3d PA |
126 | void |
127 | alpha_bsd_nat_target::store_registers (struct regcache *regcache, int regno) | |
448628fe | 128 | { |
e771a871 JT |
129 | if (regno == -1 || getregs_supplies (regno)) |
130 | { | |
12bcb0fe | 131 | struct reg gregs; |
e99b03dc | 132 | if (ptrace (PT_GETREGS, regcache->ptid ().pid (), |
9f8e0089 | 133 | (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
edefbb7c | 134 | perror_with_name (_("Couldn't get registers")); |
e771a871 | 135 | |
56be3814 | 136 | alphabsd_fill_reg (regcache, (char *) &gregs, regno); |
448628fe | 137 | |
e99b03dc | 138 | if (ptrace (PT_SETREGS, regcache->ptid ().pid (), |
9f8e0089 | 139 | (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
edefbb7c | 140 | perror_with_name (_("Couldn't write registers")); |
448628fe | 141 | |
e771a871 JT |
142 | if (regno != -1) |
143 | return; | |
144 | } | |
448628fe | 145 | |
0963b4bd | 146 | if (regno == -1 |
ac7936df | 147 | || regno >= gdbarch_fp0_regnum (regcache->arch ())) |
448628fe | 148 | { |
12bcb0fe | 149 | struct fpreg fpregs; |
448628fe | 150 | |
e99b03dc | 151 | if (ptrace (PT_GETFPREGS, regcache->ptid ().pid (), |
9f8e0089 | 152 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 153 | perror_with_name (_("Couldn't get floating point status")); |
448628fe | 154 | |
56be3814 | 155 | alphabsd_fill_fpreg (regcache, (char *) &fpregs, regno); |
448628fe | 156 | |
e99b03dc | 157 | if (ptrace (PT_SETFPREGS, regcache->ptid ().pid (), |
9f8e0089 | 158 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 159 | perror_with_name (_("Couldn't write floating point status")); |
448628fe MK |
160 | } |
161 | } | |
4816ec69 MK |
162 | \f |
163 | ||
164 | /* Support for debugging kernel virtual memory images. */ | |
165 | ||
4816ec69 MK |
166 | #include <sys/signal.h> |
167 | #include <machine/pcb.h> | |
168 | ||
169 | #include "bsd-kvm.h" | |
170 | ||
171 | static int | |
172 | alphabsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) | |
173 | { | |
174 | int regnum; | |
175 | ||
176 | /* The following is true for OpenBSD 3.9: | |
177 | ||
178 | The pcb contains the register state at the context switch inside | |
179 | cpu_switch(). */ | |
180 | ||
181 | /* The stack pointer shouldn't be zero. */ | |
182 | if (pcb->pcb_hw.apcb_ksp == 0) | |
183 | return 0; | |
184 | ||
73e1c03f | 185 | regcache->raw_supply (ALPHA_SP_REGNUM, &pcb->pcb_hw.apcb_ksp); |
4816ec69 MK |
186 | |
187 | for (regnum = ALPHA_S0_REGNUM; regnum < ALPHA_A0_REGNUM; regnum++) | |
73e1c03f SM |
188 | regcache->raw_supply (regnum, &pcb->pcb_context[regnum - ALPHA_S0_REGNUM]); |
189 | regcache->raw_supply (ALPHA_RA_REGNUM, &pcb->pcb_context[7]); | |
4816ec69 MK |
190 | |
191 | return 1; | |
192 | } | |
193 | \f | |
0d6e4ad7 | 194 | |
0d6e4ad7 MK |
195 | void |
196 | _initialize_alphabsd_nat (void) | |
197 | { | |
d9f719f1 | 198 | add_inf_child_target (&the_alpha_bsd_nat_target); |
4816ec69 MK |
199 | |
200 | /* Support debugging kernel virtual memory images. */ | |
201 | bsd_kvm_add_target (alphabsd_supply_pcb); | |
0d6e4ad7 | 202 | } |