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sparc64-obsd-nat.c
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1/* Native-dependent code for OpenBSD/sparc64.
2
3 Copyright (C) 2003-2023 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#include "obsd-nat.h"
28
29/* Determine whether `gregset_t' contains register REGNUM. */
30
31static int
33{
34 /* Integer registers. */
39 return 1;
40
41 /* Control registers. */
46 return 1;
47
48 return 0;
49}
50
51/* Determine whether `fpregset_t' contains register REGNUM. */
52
53static int
55{
56 /* Floating-point registers. */
59 return 1;
60
61 /* Control registers. */
63 return 1;
64
65 return 0;
66}
67
68
69/* Support for debugging kernel virtual memory images. */
70
71#include <sys/types.h>
72#include <machine/pcb.h>
73
74#include "bsd-kvm.h"
75
76static int
77sparc64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
78{
79 u_int64_t state;
80 int regnum;
81
82 /* The following is true for OpenBSD 3.0:
83
84 The pcb contains %sp and %pc, %pstate and %cwp. From this
85 information we reconstruct the register state as it would look
86 when we just returned from cpu_switch(). */
87
88 /* The stack pointer shouldn't be zero. */
89 if (pcb->pcb_sp == 0)
90 return 0;
91
92 /* If the program counter is zero, this is probably a core dump, and
93 we can get %pc from the stack. */
94 if (pcb->pcb_pc == 0)
95 read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
96 (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
97
98 regcache->raw_supply (SPARC_SP_REGNUM, &pcb->pcb_sp);
99 regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc);
100
101 state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
103
104 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
105
106 return 1;
107}
108
109/* Add some extra features to the generic SPARC target. */
111
113void
int regnum
void bsd_kvm_add_target(int(*supply_pcb)(struct regcache *, struct pcb *))
Definition bsd-kvm.c:380
void raw_supply(int regnum, const void *buf) override
Definition regcache.c:1062
void read_memory(CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
Definition corefile.c:238
void add_inf_child_target(inf_child_target *target)
Definition inf-child.c:418
int(* sparc_fpregset_supplies_p)(struct gdbarch *, int)
Definition sparc-nat.c:106
int(* sparc_gregset_supplies_p)(struct gdbarch *, int)
Definition sparc-nat.c:105
#define sparc_supply_fpregset
#define sparc_supply_gregset
#define sparc_collect_fpregset
#define sparc_collect_gregset
void sparc_supply_rwindow(struct regcache *regcache, CORE_ADDR sp, int regnum)
#define BIAS
Definition sparc-tdep.c:68
@ SPARC_O0_REGNUM
Definition sparc-tdep.h:112
@ SPARC_G1_REGNUM
Definition sparc-tdep.h:105
@ SPARC_L0_REGNUM
Definition sparc-tdep.h:120
@ SPARC_I0_REGNUM
Definition sparc-tdep.h:128
@ SPARC_G7_REGNUM
Definition sparc-tdep.h:111
@ SPARC_F0_REGNUM
Definition sparc-tdep.h:136
@ SPARC_L7_REGNUM
Definition sparc-tdep.h:127
@ SPARC_I7_REGNUM
Definition sparc-tdep.h:135
@ SPARC_F31_REGNUM
Definition sparc-tdep.h:144
@ SPARC_O7_REGNUM
Definition sparc-tdep.h:119
@ SPARC_SP_REGNUM
Definition sparc-tdep.h:118
const struct sparc_gregmap sparc64nbsd_gregmap
static int sparc64obsd_fpregset_supplies_p(struct gdbarch *gdbarch, int regnum)
static sparc_target< obsd_nat_target > the_sparc64_obsd_nat_target
void _initialize_sparc64obsd_nat()
static int sparc64obsd_gregset_supplies_p(struct gdbarch *gdbarch, int regnum)
static int sparc64obsd_supply_pcb(struct regcache *regcache, struct pcb *pcb)
void sparc64_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
void sparc64_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
void sparc64_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
const struct sparc_fpregmap sparc64_bsd_fpregmap
void sparc64_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
@ SPARC64_FSR_REGNUM
@ SPARC64_Y_REGNUM
@ SPARC64_PC_REGNUM
@ SPARC64_F32_REGNUM
@ SPARC64_NPC_REGNUM
@ SPARC64_STATE_REGNUM
@ SPARC64_F62_REGNUM