1 /* Native-dependent code for OpenBSD/sparc64.
3 Copyright (C) 2003-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
25 #include "sparc64-tdep.h"
26 #include "sparc-nat.h"
29 /* Determine whether `gregset_t' contains register REGNUM. */
32 sparc64obsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
34 /* Integer registers. */
35 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
36 || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
37 || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
38 || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
41 /* Control registers. */
42 if (regnum == SPARC64_PC_REGNUM
43 || regnum == SPARC64_NPC_REGNUM
44 || regnum == SPARC64_STATE_REGNUM
45 || regnum == SPARC64_Y_REGNUM)
51 /* Determine whether `fpregset_t' contains register REGNUM. */
54 sparc64obsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
56 /* Floating-point registers. */
57 if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
58 || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
61 /* Control registers. */
62 if (regnum == SPARC64_FSR_REGNUM)
69 /* Support for debugging kernel virtual memory images. */
71 #include <sys/types.h>
72 #include <machine/pcb.h>
77 sparc64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
82 /* The following is true for OpenBSD 3.0:
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(). */
88 /* The stack pointer shouldn't be zero. */
92 /* If the program counter is zero, this is probably a core dump, and
93 we can get %pc from the stack. */
95 read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
96 (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
98 regcache->raw_supply (SPARC_SP_REGNUM, &pcb->pcb_sp);
99 regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc);
101 state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
102 regcache->raw_supply (SPARC64_STATE_REGNUM, &state);
104 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
109 /* Add some extra features to the generic SPARC target. */
110 static sparc_target<obsd_nat_target> the_sparc64_obsd_nat_target;
113 _initialize_sparc64obsd_nat (void)
115 sparc_supply_gregset = sparc64_supply_gregset;
116 sparc_collect_gregset = sparc64_collect_gregset;
117 sparc_supply_fpregset = sparc64_supply_fpregset;
118 sparc_collect_fpregset = sparc64_collect_fpregset;
119 sparc_gregset_supplies_p = sparc64obsd_gregset_supplies_p;
120 sparc_fpregset_supplies_p = sparc64obsd_fpregset_supplies_p;
122 sparc_gregmap = &sparc64nbsd_gregmap;
123 sparc_fpregmap = &sparc64_bsd_fpregmap;
125 /* Add some extra features to the generic SPARC target. */
126 add_inf_child_target (&the_sparc64_obsd_nat_target);
128 /* Support debugging kernel virtual memory images. */
129 bsd_kvm_add_target (sparc64obsd_supply_pcb);