1 /* Native-dependent code for UltraSPARC systems running NetBSD.
2 Copyright 2002 Free Software Foundation, Inc.
3 Contributed by Wasabi Systems, 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., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include "sparcnbsd-tdep.h"
28 #include <sys/types.h>
29 #include <sys/ptrace.h>
30 #include <machine/reg.h>
32 /* NOTE: We don't bother with any of the deferred_store nonsense; it
33 makes things a lot more complicated than they need to be. */
35 /* Determine if PT_GETREGS fetches this register. */
37 getregs_supplies (int regno)
39 /* FIXME: PS_REGNUM for 32-bit code. */
40 return (regno == TSTATE_REGNUM
42 || regno == NPC_REGNUM
44 || (regno >= G0_REGNUM && regno <= G7_REGNUM)
45 || (regno >= O0_REGNUM && regno <= O7_REGNUM)
46 /* stack regs (handled by sparcnbsd_supply_reg) */
47 || (regno >= L0_REGNUM && regno <= I7_REGNUM));
50 /* Determine if PT_GETFPREGS fetches this register. */
52 getfpregs_supplies (int regno)
54 return ((regno >= FP0_REGNUM && regno <= (FP0_REGNUM + 47))
55 || regno == FPS_REGNUM);
59 fetch_inferior_registers (int regno)
61 /* We don't use deferred stores. */
63 internal_error (__FILE__, __LINE__,
64 "fetch_inferior_registers: deferred stores pending");
66 if (regno == -1 || getregs_supplies (regno))
73 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
74 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
75 perror_with_name ("Couldn't get registers");
77 if (gdbarch_ptr_bit (current_gdbarch) == 32)
78 sparcnbsd_supply_reg32 ((char *) ®s.regs32, regno);
80 sparcnbsd_supply_reg64 ((char *) ®s.regs64, regno);
85 if (regno == -1 || getfpregs_supplies (regno))
88 struct fpreg32 fpregs32;
89 struct fpreg64 fpregs64;
92 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
93 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
94 perror_with_name ("Couldn't get floating point registers");
96 if (gdbarch_ptr_bit (current_gdbarch) == 32)
97 sparcnbsd_supply_fpreg32 ((char *) &fpregs.fpregs32, regno);
99 sparcnbsd_supply_fpreg64 ((char *) &fpregs.fpregs64, regno);
106 store_inferior_registers (int regno)
108 /* We don't use deferred stores. */
110 internal_error (__FILE__, __LINE__,
111 "store_inferior_registers: deferred stores pending");
113 if (regno == -1 || getregs_supplies (regno))
120 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
121 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
122 perror_with_name ("Couldn't get registers");
124 if (gdbarch_ptr_bit (current_gdbarch) == 32)
125 sparcnbsd_fill_reg32 ((char *) ®s.regs32, regno);
127 sparcnbsd_fill_reg64 ((char *) ®s.regs64, regno);
129 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
130 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
131 perror_with_name ("Couldn't write registers");
133 /* Deal with the stack regs. */
134 if (regno == -1 || regno == SP_REGNUM
135 || (regno >= L0_REGNUM && regno <= I7_REGNUM))
137 CORE_ADDR sp = read_register (SP_REGNUM);
143 /* Registers are 64-bit. */
146 for (i = L0_REGNUM; i <= I7_REGNUM; i++)
148 if (regno == -1 || regno == SP_REGNUM || regno == i)
150 regcache_collect (i, buf);
151 target_write_memory (sp + ((i - L0_REGNUM) * 8),
158 /* Registers are 32-bit. Toss any sign-extension of the stack
161 FIXME: We don't currently handle 32-bit code in a binary
162 that indicated LP64. Do we have to care about that? */
163 if (gdbarch_ptr_bit (current_gdbarch) != 32)
166 "store_inferior_registers: 32-bit code in 64-bit inferior");
169 for (i = L0_REGNUM; i <= I7_REGNUM; i++)
171 if (regno == -1 || regno == SP_REGNUM || regno == i)
173 regcache_collect (i, buf);
174 target_write_memory (sp + ((i - L0_REGNUM) * 4), buf, 4);
184 if (regno == -1 || getfpregs_supplies (regno))
187 struct fpreg32 fpregs32;
188 struct fpreg64 fpregs64;
191 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
192 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
193 perror_with_name ("Couldn't get floating point registers");
195 if (gdbarch_ptr_bit (current_gdbarch) == 32)
196 sparcnbsd_fill_fpreg32 ((char *) &fpregs.fpregs32, regno);
198 sparcnbsd_fill_fpreg64 ((char *) &fpregs.fpregs64, regno);
200 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
201 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
202 perror_with_name ("Couldn't write floating point registers");