1 /* Host-dependent code for Sun-3 for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 #include <sys/ptrace.h>
26 #define KERNEL /* To get floating point reg definitions */
27 #include <machine/reg.h>
31 #if defined (GDB_TARGET_IS_SUN3)
32 /* All of this stuff is only relevant if both host and target are sun3. */
34 fetch_inferior_registers (regno)
37 struct regs inferior_registers;
39 struct fp_status inferior_fp_registers;
41 extern char registers[];
45 ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
47 ptrace (PTRACE_GETFPREGS, inferior_pid, &inferior_fp_registers);
50 bcopy (&inferior_registers, registers, 16 * 4);
52 bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
53 sizeof inferior_fp_registers.fps_regs);
55 *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
56 *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
58 bcopy (&inferior_fp_registers.fps_control,
59 ®isters[REGISTER_BYTE (FPC_REGNUM)],
60 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
64 /* Store our register values back into the inferior.
65 If REGNO is -1, do this for all registers.
66 Otherwise, REGNO specifies which register (so we can save time). */
69 store_inferior_registers (regno)
72 struct regs inferior_registers;
74 struct fp_status inferior_fp_registers;
76 extern char registers[];
78 bcopy (registers, &inferior_registers, 16 * 4);
80 bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
81 sizeof inferior_fp_registers.fps_regs);
83 inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
84 inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
87 bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)],
88 &inferior_fp_registers.fps_control,
89 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
92 ptrace (PTRACE_SETREGS, inferior_pid, &inferior_registers);
94 ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
98 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
101 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
103 unsigned core_reg_size;
105 unsigned int reg_addr; /* Unused in this version */
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. */
143 fetch_inferior_registers (regno)
150 store_inferior_registers (regno)
157 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
159 unsigned core_reg_size;
161 unsigned int reg_addr; /* Unused in this version */
164 #endif /* Not sun3 target. */