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/tmp/gdb-8.1/gdb/sparc64-nbsd-nat.c
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1 /* Native-dependent code for NetBSD/sparc64.
2
3 Copyright (C) 2003-2018 Free Software Foundation, Inc.
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
9 the Free Software Foundation; either version 3 of the License, or
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
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #include "defs.h"
21 #include "gdbcore.h"
22 #include "regcache.h"
23 #include "target.h"
24
25 #include "sparc64-tdep.h"
26 #include "sparc-nat.h"
27
28 /* NetBSD is different from the other OSes that support both SPARC and
29 UltraSPARC in that the result of ptrace(2) depends on whether the
30 traced process is 32-bit or 64-bit. */
31
32 static void
33 sparc64nbsd_supply_gregset (const struct sparc_gregmap *gregmap,
34 struct regcache *regcache,
35 int regnum, const void *gregs)
36 {
37 int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
38
39 if (sparc32)
40 sparc32_supply_gregset (&sparc32nbsd_gregmap, regcache, regnum, gregs);
41 else
42 sparc64_supply_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
43 }
44
45 static void
46 sparc64nbsd_collect_gregset (const struct sparc_gregmap *gregmap,
47 const struct regcache *regcache,
48 int regnum, void *gregs)
49 {
50 int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
51
52 if (sparc32)
53 sparc32_collect_gregset (&sparc32nbsd_gregmap, regcache, regnum, gregs);
54 else
55 sparc64_collect_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
56 }
57
58 static void
59 sparc64nbsd_supply_fpregset (const struct sparc_fpregmap *fpregmap,
60 struct regcache *regcache,
61 int regnum, const void *fpregs)
62 {
63 int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
64
65 if (sparc32)
66 sparc32_supply_fpregset (&sparc32_bsd_fpregmap, regcache, regnum, fpregs);
67 else
68 sparc64_supply_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
69 }
70
71 static void
72 sparc64nbsd_collect_fpregset (const struct sparc_fpregmap *fpregmap,
73 const struct regcache *regcache,
74 int regnum, void *fpregs)
75 {
76 int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
77
78 if (sparc32)
79 sparc32_collect_fpregset (&sparc32_bsd_fpregmap, regcache, regnum, fpregs);
80 else
81 sparc64_collect_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
82 }
83
84 /* Determine whether `gregset_t' contains register REGNUM. */
85
86 static int
87 sparc64nbsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
88 {
89 if (gdbarch_ptr_bit (gdbarch) == 32)
90 return sparc32_gregset_supplies_p (gdbarch, regnum);
91
92 /* Integer registers. */
93 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
94 || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
95 || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
96 || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
97 return 1;
98
99 /* Control registers. */
100 if (regnum == SPARC64_PC_REGNUM
101 || regnum == SPARC64_NPC_REGNUM
102 || regnum == SPARC64_STATE_REGNUM
103 || regnum == SPARC64_Y_REGNUM)
104 return 1;
105
106 return 0;
107 }
108
109 /* Determine whether `fpregset_t' contains register REGNUM. */
110
111 static int
112 sparc64nbsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
113 {
114 if (gdbarch_ptr_bit (gdbarch) == 32)
115 return sparc32_fpregset_supplies_p (gdbarch, regnum);
116
117 /* Floating-point registers. */
118 if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
119 || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
120 return 1;
121
122 /* Control registers. */
123 if (regnum == SPARC64_FSR_REGNUM)
124 return 1;
125
126 return 0;
127 }
128
129
130 /* Support for debugging kernel virtual memory images. */
131
132 #include <sys/types.h>
133 #include <machine/pcb.h>
134
135 #include "bsd-kvm.h"
136
137 static int
138 sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
139 {
140 u_int64_t state;
141 int regnum;
142
143 /* The following is true for NetBSD 1.6.2:
144
145 The pcb contains %sp and %pc, %pstate and %cwp. From this
146 information we reconstruct the register state as it would look
147 when we just returned from cpu_switch(). */
148
149 /* The stack pointer shouldn't be zero. */
150 if (pcb->pcb_sp == 0)
151 return 0;
152
153 /* If the program counter is zero, this is probably a core dump, and
154 we can get %pc from the stack. */
155 if (pcb->pcb_pc == 0)
156 read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
157 (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
158
159 regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
160 regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
161
162 state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
163 regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, &state);
164
165 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
166
167 return 1;
168 }
169
170 void
171 _initialize_sparc64nbsd_nat (void)
172 {
173 sparc_supply_gregset = sparc64nbsd_supply_gregset;
174 sparc_collect_gregset = sparc64nbsd_collect_gregset;
175 sparc_supply_fpregset = sparc64nbsd_supply_fpregset;
176 sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
177 sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
178 sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
179
180 /* We've got nothing to add to the generic SPARC target. */
181 add_target (sparc_target ());
182
183 /* Support debugging kernel virtual memory images. */
184 bsd_kvm_add_target (sparc64nbsd_supply_pcb);
185 }
sparc32_gregset_supplies_p
int sparc32_gregset_supplies_p(struct gdbarch *gdbarch, int regnum)
Definition: sparc-nat.c:98
gdbarch
Definition: gdbarch.c:127
add_target
void add_target(struct target_ops *t)
Definition: target.c:395
sparc64_collect_fpregset
void sparc64_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
Definition: sparc64-tdep.c:2143
sparc32_supply_gregset
void sparc32_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
Definition: sparc-tdep.c:2069
sparc64nbsd_gregset_supplies_p
static int sparc64nbsd_gregset_supplies_p(struct gdbarch *gdbarch, int regnum)
Definition: sparc64-nbsd-nat.c:87
sparc-nat.h
gdbarch_ptr_bit
int gdbarch_ptr_bit(struct gdbarch *gdbarch)
Definition: gdbarch.c:1831
_initialize_sparc64nbsd_nat
void _initialize_sparc64nbsd_nat(void)
Definition: sparc64-nbsd-nat.c:171
BIAS
#define BIAS
Definition: sparc-tdep.c:72
sparc_target
struct target_ops * sparc_target(void)
Definition: sparc-nat.c:329
sparc64nbsd_supply_fpregset
static void sparc64nbsd_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
Definition: sparc64-nbsd-nat.c:59
SPARC_O7_REGNUM
Definition: sparc-tdep.h:116
sparc32_fpregset_supplies_p
int sparc32_fpregset_supplies_p(struct gdbarch *gdbarch, int regnum)
Definition: sparc-nat.c:120
sparc64-tdep.h
SPARC_I0_REGNUM
Definition: sparc-tdep.h:125
sparc_gregmap
Definition: sparc-tdep.h:37
sparc32_collect_fpregset
void sparc32_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
Definition: sparc-tdep.c:2209
SPARC_F31_REGNUM
Definition: sparc-tdep.h:141
defs.h
sparc_supply_fpregset
#define sparc_supply_fpregset
Definition: sparc-sol2-nat.c:67
sparc64_collect_gregset
void sparc64_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
Definition: sparc64-tdep.c:1995
sparc64_supply_gregset
void sparc64_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
Definition: sparc64-tdep.c:1878
sparc_supply_rwindow
void sparc_supply_rwindow(struct regcache *regcache, CORE_ADDR sp, int regnum)
Definition: sparc-tdep.c:1925
SPARC_F0_REGNUM
Definition: sparc-tdep.h:133
SPARC_SP_REGNUM
Definition: sparc-tdep.h:115
sparc32nbsd_gregmap
const struct sparc_gregmap sparc32nbsd_gregmap
Definition: sparc-nbsd-tdep.c:41
SPARC_I7_REGNUM
Definition: sparc-tdep.h:132
sparc_supply_gregset
#define sparc_supply_gregset
Definition: sparc-sol2-nat.c:66
sparc64_bsd_fpregmap
const struct sparc_fpregmap sparc64_bsd_fpregmap
Definition: sparc64-tdep.c:2180
sparc64nbsd_fpregset_supplies_p
static int sparc64nbsd_fpregset_supplies_p(struct gdbarch *gdbarch, int regnum)
Definition: sparc64-nbsd-nat.c:112
SPARC64_PC_REGNUM
Definition: sparc64-tdep.h:53
SPARC_L0_REGNUM
Definition: sparc-tdep.h:117
sparc64nbsd_collect_gregset
static void sparc64nbsd_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
Definition: sparc64-nbsd-nat.c:46
regcache.h
bsd-kvm.h
SPARC64_NPC_REGNUM
Definition: sparc64-tdep.h:54
sparc64_supply_fpregset
void sparc64_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
Definition: sparc64-tdep.c:2105
sparc_fpregmap
Definition: sparc-tdep.h:50
SPARC64_STATE_REGNUM
Definition: sparc64-tdep.h:55
sparc32_supply_fpregset
void sparc32_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
Definition: sparc-tdep.c:2189
sparc_collect_fpregset
#define sparc_collect_fpregset
Definition: sparc-sol2-nat.c:69
sparc64nbsd_gregmap
const struct sparc_gregmap sparc64nbsd_gregmap
Definition: sparc64-nbsd-tdep.c:37
SPARC_G1_REGNUM
Definition: sparc-tdep.h:102
sparc32_collect_gregset
void sparc32_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
Definition: sparc-tdep.c:2134
regnum
int regnum
Definition: aarch64-tdep.c:77
read_memory
void read_memory(CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
Definition: corefile.c:258
gdbarch_tdep::gregmap
unsigned long * gregmap
Definition: xtensa-tdep.h:220
SPARC64_FSR_REGNUM
Definition: sparc64-tdep.h:56
sparc64nbsd_supply_gregset
static void sparc64nbsd_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
Definition: sparc64-nbsd-nat.c:33
sparc32_bsd_fpregmap
const struct sparc_fpregmap sparc32_bsd_fpregmap
Definition: sparc-tdep.c:2250
gdb_byte
bfd_byte gdb_byte
Definition: common-types.h:38
sparc_collect_gregset
#define sparc_collect_gregset
Definition: sparc-sol2-nat.c:68
SPARC_O0_REGNUM
Definition: sparc-tdep.h:109
SPARC64_F62_REGNUM
Definition: sparc64-tdep.h:51
gdbcore.h
SPARC64_Y_REGNUM
Definition: sparc64-tdep.h:58
regcache::arch
gdbarch * arch() const
Definition: regcache.c:221
SPARC64_F32_REGNUM
Definition: sparc64-tdep.h:49
target.h
regcache_raw_supply
void regcache_raw_supply(struct regcache *regcache, int regnum, const void *buf)
Definition: regcache.c:1004
sparc_fpregset_supplies_p
int(* sparc_fpregset_supplies_p)(struct gdbarch *, int)
Definition: sparc-nat.c:93
regcache
Definition: regcache.h:232
sparc64nbsd_supply_pcb
static int sparc64nbsd_supply_pcb(struct regcache *regcache, struct pcb *pcb)
Definition: sparc64-nbsd-nat.c:138
bsd_kvm_add_target
void bsd_kvm_add_target(int(*supply_pcb)(struct regcache *, struct pcb *))
Definition: bsd-kvm.c:354
sparc_gregset_supplies_p
int(* sparc_gregset_supplies_p)(struct gdbarch *, int)
Definition: sparc-nat.c:92
SPARC_L7_REGNUM
Definition: sparc-tdep.h:124
sparc64nbsd_collect_fpregset
static void sparc64nbsd_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
Definition: sparc64-nbsd-nat.c:72
SPARC_G7_REGNUM
Definition: sparc-tdep.h:108