1 /* Sun-3 Machine-dependent code which would otherwise be in inflow.c and core.c,
2 for GDB, the GNU debugger.
3 Copyright (C) 1986, 1987, 1989 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include <sys/ptrace.h>
27 #define KERNEL /* To get floating point reg definitions */
28 #include <machine/reg.h>
34 #if defined (GDB_TARGET_IS_SUN3)
35 /* All of this stuff is only relevant if both host and target are sun3. */
37 fetch_inferior_registers ()
39 struct regs inferior_registers;
41 struct fp_status inferior_fp_registers;
43 extern char registers[];
47 ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
49 ptrace (PTRACE_GETFPREGS, inferior_pid, &inferior_fp_registers);
52 bcopy (&inferior_registers, registers, 16 * 4);
54 bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
55 sizeof inferior_fp_registers.fps_regs);
57 *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
58 *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
60 bcopy (&inferior_fp_registers.fps_control,
61 ®isters[REGISTER_BYTE (FPC_REGNUM)],
62 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
66 /* Store our register values back into the inferior.
67 If REGNO is -1, do this for all registers.
68 Otherwise, REGNO specifies which register (so we can save time). */
70 store_inferior_registers (regno)
73 struct regs inferior_registers;
75 struct fp_status inferior_fp_registers;
77 extern char registers[];
79 bcopy (registers, &inferior_registers, 16 * 4);
81 bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
82 sizeof inferior_fp_registers.fps_regs);
84 inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
85 inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
88 bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)],
89 &inferior_fp_registers.fps_control,
90 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
93 ptrace (PTRACE_SETREGS, inferior_pid, &inferior_registers);
95 ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
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)
104 unsigned core_reg_size;
107 extern char registers[];
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 bcopy ((char *)regs, registers, 16 * 4);
115 supply_register (PS_REGNUM, ®s->r_ps);
116 supply_register (PC_REGNUM, ®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 bcopy (fpustruct->f_fpstatus.fps_regs,
126 ®isters[REGISTER_BYTE (FP0_REGNUM)],
127 sizeof fpustruct->f_fpstatus.fps_regs);
128 bcopy (&fpustruct->f_fpstatus.fps_control,
129 ®isters[REGISTER_BYTE (FPC_REGNUM)],
130 sizeof fpustruct->f_fpstatus -
131 sizeof fpustruct->f_fpstatus.fps_regs);
135 fprintf (stderr, "Couldn't read float regs from core file\n");
138 #else /* Not sun3 target. */
139 /* These functions shouldn't be called when we're cross-debugging. */
142 fetch_inferior_registers ()
147 store_inferior_registers (regno)
154 fetch_core_registers (core_reg_sect, core_reg_size, which)
156 unsigned core_reg_size;
160 #endif /* Not sun3 target. */