157 lines
4.4 KiB
C
157 lines
4.4 KiB
C
/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
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Copyright 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include "defs.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include <sys/ptrace.h>
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#define KERNEL /* To get floating point reg definitions */
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#include <machine/reg.h>
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extern int errno;
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#if defined (GDB_TARGET_IS_SUN3)
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/* All of this stuff is only relevant if both host and target are sun3. */
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void
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fetch_inferior_registers ()
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{
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struct regs inferior_registers;
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#ifdef FP0_REGNUM
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struct fp_status inferior_fp_registers;
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#endif
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extern char registers[];
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registers_fetched ();
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ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
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#ifdef FP0_REGNUM
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ptrace (PTRACE_GETFPREGS, inferior_pid, &inferior_fp_registers);
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#endif
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bcopy (&inferior_registers, registers, 16 * 4);
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#ifdef FP0_REGNUM
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bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
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sizeof inferior_fp_registers.fps_regs);
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#endif
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*(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
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*(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
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#ifdef FP0_REGNUM
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bcopy (&inferior_fp_registers.fps_control,
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®isters[REGISTER_BYTE (FPC_REGNUM)],
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sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
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#endif
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}
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/* Store our register values back into the inferior.
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If REGNO is -1, do this for all registers.
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Otherwise, REGNO specifies which register (so we can save time). */
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store_inferior_registers (regno)
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int regno;
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{
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struct regs inferior_registers;
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#ifdef FP0_REGNUM
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struct fp_status inferior_fp_registers;
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#endif
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extern char registers[];
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bcopy (registers, &inferior_registers, 16 * 4);
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#ifdef FP0_REGNUM
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bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
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sizeof inferior_fp_registers.fps_regs);
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#endif
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inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
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inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
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#ifdef FP0_REGNUM
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bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)],
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&inferior_fp_registers.fps_control,
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sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
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#endif
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ptrace (PTRACE_SETREGS, inferior_pid, &inferior_registers);
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#if FP0_REGNUM
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ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
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#endif
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}
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/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
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void
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fetch_core_registers (core_reg_sect, core_reg_size, which)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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{
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extern char registers[];
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struct regs *regs = (struct regs *) core_reg_sect;
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if (which == 0) {
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if (core_reg_size < sizeof (struct regs))
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error ("Can't find registers in core file");
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bcopy ((char *)regs, registers, 16 * 4);
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supply_register (PS_REGNUM, ®s->r_ps);
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supply_register (PC_REGNUM, ®s->r_pc);
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} else if (which == 2) {
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#define fpustruct ((struct fpu *) core_reg_sect)
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if (core_reg_size >= sizeof (struct fpu))
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{
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#ifdef FP0_REGNUM
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bcopy (fpustruct->f_fpstatus.fps_regs,
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®isters[REGISTER_BYTE (FP0_REGNUM)],
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sizeof fpustruct->f_fpstatus.fps_regs);
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bcopy (&fpustruct->f_fpstatus.fps_control,
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®isters[REGISTER_BYTE (FPC_REGNUM)],
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sizeof fpustruct->f_fpstatus -
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sizeof fpustruct->f_fpstatus.fps_regs);
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#endif
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}
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else
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fprintf (stderr, "Couldn't read float regs from core file\n");
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}
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}
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#else /* Not sun3 target. */
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/* These functions shouldn't be called when we're cross-debugging. */
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void
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fetch_inferior_registers ()
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{
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}
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/* ARGSUSED */
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store_inferior_registers (regno)
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int regno;
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{
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}
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/* ARGSUSED */
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void
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fetch_core_registers (core_reg_sect, core_reg_size, which)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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{
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}
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#endif /* Not sun3 target. */
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