1 /* Native-dependent code for NetBSD/sparc64.
3 Copyright (C) 2003, 2004, 2006, 2007 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 2 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, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
27 #include "sparc64-tdep.h"
28 #include "sparc-nat.h"
30 /* NetBSD is different from the other OSes that support both SPARC and
31 UltraSPARC in that the result of ptrace(2) depends on whether the
32 traced process is 32-bit or 64-bit. */
35 sparc64nbsd_supply_gregset (const struct sparc_gregset *gregset,
36 struct regcache *regcache,
37 int regnum, const void *gregs)
39 int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
42 sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
44 sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
48 sparc64nbsd_collect_gregset (const struct sparc_gregset *gregset,
49 const struct regcache *regcache,
50 int regnum, void *gregs)
52 int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
55 sparc32_collect_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
57 sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
61 sparc64nbsd_supply_fpregset (struct regcache *regcache,
62 int regnum, const void *fpregs)
64 int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
67 sparc32_supply_fpregset (regcache, regnum, fpregs);
69 sparc64_supply_fpregset (regcache, regnum, fpregs);
73 sparc64nbsd_collect_fpregset (const struct regcache *regcache,
74 int regnum, void *fpregs)
76 int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
79 sparc32_collect_fpregset (regcache, regnum, fpregs);
81 sparc64_collect_fpregset (regcache, regnum, fpregs);
84 /* Determine whether `gregset_t' contains register REGNUM. */
87 sparc64nbsd_gregset_supplies_p (int regnum)
89 if (gdbarch_ptr_bit (current_gdbarch) == 32)
90 return sparc32_gregset_supplies_p (regnum);
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))
99 /* Control registers. */
100 if (regnum == SPARC64_PC_REGNUM
101 || regnum == SPARC64_NPC_REGNUM
102 || regnum == SPARC64_STATE_REGNUM
103 || regnum == SPARC64_Y_REGNUM)
109 /* Determine whether `fpregset_t' contains register REGNUM. */
112 sparc64nbsd_fpregset_supplies_p (int regnum)
114 if (gdbarch_ptr_bit (current_gdbarch) == 32)
115 return sparc32_fpregset_supplies_p (regnum);
117 /* Floating-point registers. */
118 if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
119 || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
122 /* Control registers. */
123 if (regnum == SPARC64_FSR_REGNUM)
130 /* Support for debugging kernel virtual memory images. */
132 #include <sys/types.h>
133 #include <machine/pcb.h>
138 sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
143 /* The following is true for NetBSD 1.6.2:
145 The pcb contains %sp and %pc, %psr and %wim. From this information
146 we reconstruct the register state as it would look when we just
147 returned from cpu_switch(). */
149 /* The stack pointer shouldn't be zero. */
150 if (pcb->pcb_sp == 0)
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);
160 regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
161 regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
163 state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
164 regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, &state);
166 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
172 /* Provide a prototype to silence -Wmissing-prototypes. */
173 void _initialize_sparc64nbsd_nat (void);
176 _initialize_sparc64nbsd_nat (void)
178 sparc_supply_gregset = sparc64nbsd_supply_gregset;
179 sparc_collect_gregset = sparc64nbsd_collect_gregset;
180 sparc_supply_fpregset = sparc64nbsd_supply_fpregset;
181 sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
182 sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
183 sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
185 /* We've got nothing to add to the generic SPARC target. */
186 add_target (sparc_target ());
188 /* Support debugging kernel virtual memory images. */
189 bsd_kvm_add_target (sparc64nbsd_supply_pcb);