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authorMark Kettenis <kettenis@gnu.org>2000-05-31 20:26:46 +0000
committerMark Kettenis <kettenis@gnu.org>2000-05-31 20:26:46 +0000
commit448628fe90adf4687346f67b63041aa03ec436ab (patch)
treeedd4948fef7eba185f2f36f1b602bc54f2bc9a1a /gdb/alphabsd-nat.c
parentc0ae4cccdd190ac5bdb579a7519ff8ff46fdc805 (diff)
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Add support for FreeBSD/Alpha.
* alphabsd-nat.c, config/alpha/fbsd.mh, config/alpha/fbsd.mt, config/alpha/nm-fbsd.h, config/alpha/tm-fbsd.h, config/alpha/xm-fbsd.h: New files.
Diffstat (limited to 'gdb/alphabsd-nat.c')
-rw-r--r--gdb/alphabsd-nat.c187
1 files changed, 187 insertions, 0 deletions
diff --git a/gdb/alphabsd-nat.c b/gdb/alphabsd-nat.c
new file mode 100644
index 0000000..f6b607d
--- /dev/null
+++ b/gdb/alphabsd-nat.c
@@ -0,0 +1,187 @@
+/* Native-dependent code for Alpha BSD's.
+ Copyright (C) 2000 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "inferior.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#ifdef HAVE_SYS_PROCFS_H
+#include <sys/procfs.h>
+#endif
+
+#ifndef HAVE_GREGSET_T
+typedef struct reg gregset_t;
+#endif
+
+#ifndef HAVE_FPREGSET_T
+typedef struct fpreg fpregset_t;
+#endif
+
+#include "gregset.h"
+
+/* Number of general-purpose registers. */
+#define NUM_GREGS 32
+
+/* Number of floating point registers. */
+#define NUM_FPREGS 31
+
+
+/* Transfering the registers between GDB, inferiors and core files. */
+
+/* Fill GDB's register array with the genereal-purpose register values
+ in *GREGSETP. */
+
+void
+supply_gregset (gregset_t *gregsetp)
+{
+ int i;
+
+ for (i = 0; i < NUM_GREGS; i++)
+ {
+ if (CANNOT_FETCH_REGISTER (i))
+ supply_register (i, NULL);
+ else
+ supply_register (i, (char *) &gregsetp->r_regs[i]);
+ }
+
+ /* The PC travels in the R_ZERO slot. */
+ supply_register (PC_REGNUM, (char *) &gregsetp->r_regs[R_ZERO]);
+}
+
+/* Fill register REGNO (if it is a general-purpose register) in
+ *GREGSETPS with the value in GDB's register array. If REGNO is -1,
+ do this for all registers. */
+
+void
+fill_gregset (gregset_t *gregsetp, int regno)
+{
+ int i;
+
+ for (i = 0; i < NUM_GREGS; i++)
+ if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i))
+ memcpy (&gregsetp->r_regs[i], &registers[REGISTER_BYTE (i)],
+ REGISTER_RAW_SIZE (i));
+
+ /* The PC travels in the R_ZERO slot. */
+ if (regno == -1 || regno == PC_REGNUM)
+ memcpy (&gregsetp->r_regs[R_ZERO], &registers[REGISTER_BYTE (PC_REGNUM)],
+ REGISTER_RAW_SIZE (PC_REGNUM));
+}
+
+/* Fill GDB's register array with the floating-point register values
+ in *FPREGSETP. */
+
+void
+supply_fpregset (fpregset_t *fpregsetp)
+{
+ int i;
+
+ for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++)
+ {
+ if (CANNOT_FETCH_REGISTER (i))
+ supply_register (i, NULL);
+ else
+ supply_register (i, (char *) &fpregsetp->fpr_regs[i]);
+ }
+
+ supply_register (FPCR_REGNUM, (char *) &fpregsetp->fpr_cr);
+}
+
+/* Fill register REGNO (if it is a floating-point register) in
+ *FPREGSETP with the value in GDB's register array. If REGNO is -1,
+ do this for all registers. */
+
+void
+fill_fpregset (fpregset_t *fpregsetp, int regno)
+{
+ int i;
+
+ for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++)
+ if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i))
+ memcpy (&fpregsetp->fpr_regs[i - FP0_REGNUM],
+ &registers[REGISTER_BYTE (i)], REGISTER_RAW_SIZE (i));
+
+ if (regno == -1 || regno == FPCR_REGNUM)
+ memcpy (&fpregsetp->fpr_cr, &registers[REGISTER_BYTE (FPCR_REGNUM)],
+ REGISTER_RAW_SIZE (FPCR_REGNUM));
+}
+
+/* Fetch register REGNO from the inferior. If REGNO is -1, do this
+ for all registers (including the floating point registers). */
+
+void
+fetch_inferior_registers (int regno)
+{
+ gregset_t gregs;
+
+ if (ptrace (PT_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ supply_gregset (&gregs);
+
+ if (regno == -1 || regno >= FP0_REGNUM)
+ {
+ fpregset_t fpregs;
+
+ if (ptrace (PT_GETFPREGS, inferior_pid,
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get floating point status");
+
+ supply_fpregset (&fpregs);
+ }
+
+ /* Reset virtual frame pointer. */
+ supply_register (FP_REGNUM, NULL);
+}
+
+/* Store register REGNO back into the inferior. If REGNO is -1, do
+ this for all registers (including the floating point registers). */
+
+void
+store_inferior_registers (int regno)
+{
+ gregset_t gregs;
+
+ if (ptrace (PT_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ fill_gregset (&gregs, regno);
+
+ if (ptrace (PT_SETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
+ perror_with_name ("Couldn't write registers");
+
+ if (regno == -1 || regno >= FP0_REGNUM)
+ {
+ fpregset_t fpregs;
+
+ if (ptrace (PT_GETFPREGS, inferior_pid,
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get floating point status");
+
+ fill_fpregset (&fpregs, regno);
+
+ if (ptrace (PT_SETFPREGS, inferior_pid,
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't write floating point status");
+ }
+}