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authorSean Eric Fagan <sef@cygnus>1992-02-10 23:30:35 +0000
committerSean Eric Fagan <sef@cygnus>1992-02-10 23:30:35 +0000
commit36a2f895f8de98026f702c7f98f2812c9d6632d5 (patch)
tree6eb5af3e91d392fa8c98e716df82d2d5d5ddd759 /gdb/os68k-xdep.c
parent87780a059afdf42e9535a9a54061a2dff03956fc (diff)
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Added support for hosting on an Apollo Series 400 processor (under
System V emulation), and targeted towards an OS/68000 system.
Diffstat (limited to 'gdb/os68k-xdep.c')
-rw-r--r--gdb/os68k-xdep.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/gdb/os68k-xdep.c b/gdb/os68k-xdep.c
new file mode 100644
index 0000000..295dff8
--- /dev/null
+++ b/gdb/os68k-xdep.c
@@ -0,0 +1,157 @@
+/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
+ Copyright 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include "defs.h"
+#include "inferior.h"
+#include "gdbcore.h"
+
+#include <sys/ptrace.h>
+#define KERNEL /* To get floating point reg definitions */
+#include <machine/reg.h>
+
+extern int errno;
+
+#if defined (GDB_TARGET_IS_SUN3)
+/* All of this stuff is only relevant if both host and target are sun3. */
+void
+fetch_inferior_registers ()
+{
+ struct regs inferior_registers;
+#ifdef FP0_REGNUM
+ struct fp_status inferior_fp_registers;
+#endif
+ extern char registers[];
+
+ registers_fetched ();
+
+ ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
+#ifdef FP0_REGNUM
+ ptrace (PTRACE_GETFPREGS, inferior_pid, &inferior_fp_registers);
+#endif
+
+ bcopy (&inferior_registers, registers, 16 * 4);
+#ifdef FP0_REGNUM
+ bcopy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
+ sizeof inferior_fp_registers.fps_regs);
+#endif
+ *(int *)&registers[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
+ *(int *)&registers[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
+#ifdef FP0_REGNUM
+ bcopy (&inferior_fp_registers.fps_control,
+ &registers[REGISTER_BYTE (FPC_REGNUM)],
+ sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
+#endif
+}
+
+/* Store our register values back into the inferior.
+ If REGNO is -1, do this for all registers.
+ Otherwise, REGNO specifies which register (so we can save time). */
+
+store_inferior_registers (regno)
+ int regno;
+{
+ struct regs inferior_registers;
+#ifdef FP0_REGNUM
+ struct fp_status inferior_fp_registers;
+#endif
+ extern char registers[];
+
+ bcopy (registers, &inferior_registers, 16 * 4);
+#ifdef FP0_REGNUM
+ bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
+ sizeof inferior_fp_registers.fps_regs);
+#endif
+ inferior_registers.r_ps = *(int *)&registers[REGISTER_BYTE (PS_REGNUM)];
+ inferior_registers.r_pc = *(int *)&registers[REGISTER_BYTE (PC_REGNUM)];
+
+#ifdef FP0_REGNUM
+ bcopy (&registers[REGISTER_BYTE (FPC_REGNUM)],
+ &inferior_fp_registers.fps_control,
+ sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
+#endif
+
+ ptrace (PTRACE_SETREGS, inferior_pid, &inferior_registers);
+#if FP0_REGNUM
+ ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
+#endif
+}
+
+/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
+
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+ char *core_reg_sect;
+ unsigned core_reg_size;
+ int which;
+{
+ extern char registers[];
+ struct regs *regs = (struct regs *) core_reg_sect;
+
+ if (which == 0) {
+ if (core_reg_size < sizeof (struct regs))
+ error ("Can't find registers in core file");
+
+ bcopy ((char *)regs, registers, 16 * 4);
+ supply_register (PS_REGNUM, &regs->r_ps);
+ supply_register (PC_REGNUM, &regs->r_pc);
+
+ } else if (which == 2) {
+
+#define fpustruct ((struct fpu *) core_reg_sect)
+
+ if (core_reg_size >= sizeof (struct fpu))
+ {
+#ifdef FP0_REGNUM
+ bcopy (fpustruct->f_fpstatus.fps_regs,
+ &registers[REGISTER_BYTE (FP0_REGNUM)],
+ sizeof fpustruct->f_fpstatus.fps_regs);
+ bcopy (&fpustruct->f_fpstatus.fps_control,
+ &registers[REGISTER_BYTE (FPC_REGNUM)],
+ sizeof fpustruct->f_fpstatus -
+ sizeof fpustruct->f_fpstatus.fps_regs);
+#endif
+ }
+ else
+ fprintf (stderr, "Couldn't read float regs from core file\n");
+ }
+}
+#else /* Not sun3 target. */
+/* These functions shouldn't be called when we're cross-debugging. */
+
+void
+fetch_inferior_registers ()
+{
+}
+
+/* ARGSUSED */
+store_inferior_registers (regno)
+ int regno;
+{
+}
+
+/* ARGSUSED */
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+ char *core_reg_sect;
+ unsigned core_reg_size;
+ int which;
+{
+}
+#endif /* Not sun3 target. */