1 /* Host-dependent code for Sun-3 for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 #include <sys/ptrace.h>
25 #define KERNEL /* To get floating point reg definitions */
26 #include <machine/reg.h>
28 static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
31 fetch_inferior_registers (regno)
34 struct regs inferior_registers;
36 struct fp_status inferior_fp_registers;
41 ptrace (PTRACE_GETREGS, inferior_pid,
42 (PTRACE_ARG3_TYPE) &inferior_registers);
44 ptrace (PTRACE_GETFPREGS, inferior_pid,
45 (PTRACE_ARG3_TYPE) &inferior_fp_registers);
48 memcpy (registers, &inferior_registers, 16 * 4);
50 memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
51 sizeof inferior_fp_registers.fps_regs);
53 *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
54 *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
56 memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
57 &inferior_fp_registers.fps_control,
58 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
62 /* Store our register values back into the inferior.
63 If REGNO is -1, do this for all registers.
64 Otherwise, REGNO specifies which register (so we can save time). */
67 store_inferior_registers (regno)
70 struct regs inferior_registers;
72 struct fp_status inferior_fp_registers;
75 memcpy (&inferior_registers, registers, 16 * 4);
77 memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
78 sizeof inferior_fp_registers.fps_regs);
80 inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
81 inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
84 memcpy (&inferior_fp_registers.fps_control,
85 ®isters[REGISTER_BYTE (FPC_REGNUM)],
86 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
89 ptrace (PTRACE_SETREGS, inferior_pid,
90 (PTRACE_ARG3_TYPE) &inferior_registers);
92 ptrace (PTRACE_SETFPREGS, inferior_pid,
93 (PTRACE_ARG3_TYPE) &inferior_fp_registers);
98 /* All of this stuff is only relevant if both host and target are sun3. */
99 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
102 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
104 unsigned core_reg_size;
106 CORE_ADDR reg_addr; /* Unused in this version */
108 struct regs *regs = (struct regs *) core_reg_sect;
111 if (core_reg_size < sizeof (struct regs))
112 error ("Can't find registers in core file");
114 memcpy (registers, (char *)regs, 16 * 4);
115 supply_register (PS_REGNUM, (char *)®s->r_ps);
116 supply_register (PC_REGNUM, (char *)®s->r_pc);
118 } else if (which == 2) {
120 #define fpustruct ((struct fpu *) core_reg_sect)
122 if (core_reg_size >= sizeof (struct fpu))
125 memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)],
126 fpustruct->f_fpstatus.fps_regs,
127 sizeof fpustruct->f_fpstatus.fps_regs);
128 memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
129 &fpustruct->f_fpstatus.fps_control,
130 sizeof fpustruct->f_fpstatus -
131 sizeof fpustruct->f_fpstatus.fps_regs);
135 fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
140 /* Register that we are able to handle sun3 core file formats.
141 FIXME: is this really bfd_target_unknown_flavour? */
143 static struct core_fns sun3_core_fns =
145 bfd_target_unknown_flavour,
146 fetch_core_registers,
151 _initialize_core_sun3 ()
153 add_core_fns (&sun3_core_fns);