1 /* Native-dependent code for UltraSPARC systems running NetBSD.
2 Copyright 2002, 2003 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 "sparc-tdep.h"
27 #include "sparcnbsd-tdep.h"
29 #include <sys/types.h>
30 #include <sys/ptrace.h>
31 #include <machine/reg.h>
33 /* NOTE: We don't bother with any of the deferred_store nonsense; it
34 makes things a lot more complicated than they need to be. */
36 /* Determine if PT_GETREGS fetches this register. */
38 getregs_supplies (int regno)
40 /* FIXME: PS_REGNUM for 32-bit code. */
41 return (regno == TSTATE_REGNUM
43 || regno == DEPRECATED_NPC_REGNUM
45 || (regno >= G0_REGNUM && regno <= G7_REGNUM)
46 || (regno >= O0_REGNUM && regno <= O7_REGNUM)
47 /* stack regs (handled by sparcnbsd_supply_reg) */
48 || (regno >= L0_REGNUM && regno <= I7_REGNUM));
51 /* Determine if PT_GETFPREGS fetches this register. */
53 getfpregs_supplies (int regno)
55 return ((regno >= FP0_REGNUM && regno <= (FP0_REGNUM + 47))
56 || regno == FPS_REGNUM);
60 fetch_inferior_registers (int regno)
62 /* We don't use deferred stores. */
64 internal_error (__FILE__, __LINE__,
65 "fetch_inferior_registers: deferred stores pending");
67 if (regno == -1 || getregs_supplies (regno))
74 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
75 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
76 perror_with_name ("Couldn't get registers");
78 if (gdbarch_ptr_bit (current_gdbarch) == 32)
79 sparcnbsd_supply_reg32 ((char *) ®s.regs32, regno);
81 sparcnbsd_supply_reg64 ((char *) ®s.regs64, regno);
86 if (regno == -1 || getfpregs_supplies (regno))
89 struct fpreg32 fpregs32;
90 struct fpreg64 fpregs64;
93 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
94 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
95 perror_with_name ("Couldn't get floating point registers");
97 if (gdbarch_ptr_bit (current_gdbarch) == 32)
98 sparcnbsd_supply_fpreg32 ((char *) &fpregs.fpregs32, regno);
100 sparcnbsd_supply_fpreg64 ((char *) &fpregs.fpregs64, regno);
107 store_inferior_registers (int regno)
109 /* We don't use deferred stores. */
111 internal_error (__FILE__, __LINE__,
112 "store_inferior_registers: deferred stores pending");
114 if (regno == -1 || getregs_supplies (regno))
121 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
122 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
123 perror_with_name ("Couldn't get registers");
125 if (gdbarch_ptr_bit (current_gdbarch) == 32)
126 sparcnbsd_fill_reg32 ((char *) ®s.regs32, regno);
128 sparcnbsd_fill_reg64 ((char *) ®s.regs64, regno);
130 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
131 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
132 perror_with_name ("Couldn't write registers");
134 /* Deal with the stack regs. */
135 if (regno == -1 || regno == SP_REGNUM
136 || (regno >= L0_REGNUM && regno <= I7_REGNUM))
138 CORE_ADDR sp = read_register (SP_REGNUM);
144 /* Registers are 64-bit. */
147 for (i = L0_REGNUM; i <= I7_REGNUM; i++)
149 if (regno == -1 || regno == SP_REGNUM || regno == i)
151 regcache_collect (i, buf);
152 target_write_memory (sp + ((i - L0_REGNUM) * 8),
159 /* Registers are 32-bit. Toss any sign-extension of the stack
162 FIXME: We don't currently handle 32-bit code in a binary
163 that indicated LP64. Do we have to care about that? */
164 if (gdbarch_ptr_bit (current_gdbarch) != 32)
167 "store_inferior_registers: 32-bit code in 64-bit inferior");
170 for (i = L0_REGNUM; i <= I7_REGNUM; i++)
172 if (regno == -1 || regno == SP_REGNUM || regno == i)
174 regcache_collect (i, buf);
175 target_write_memory (sp + ((i - L0_REGNUM) * 4), buf, 4);
185 if (regno == -1 || getfpregs_supplies (regno))
188 struct fpreg32 fpregs32;
189 struct fpreg64 fpregs64;
192 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
193 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
194 perror_with_name ("Couldn't get floating point registers");
196 if (gdbarch_ptr_bit (current_gdbarch) == 32)
197 sparcnbsd_fill_fpreg32 ((char *) &fpregs.fpregs32, regno);
199 sparcnbsd_fill_fpreg64 ((char *) &fpregs.fpregs64, regno);
201 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
202 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
203 perror_with_name ("Couldn't write floating point registers");