GDB 6.1 (excluding .info files)

1 files changed, 235 insertions, 0 deletions

diff --git a/gnu/usr.bin/binutils/gdb/amd64fbsd-nat.c b/gnu/usr.bin/binutils/gdb/amd64fbsd-nat.c
new file mode 100644
index 00000000000..f08373422c2
--- /dev/null
+++ b/gnu/usr.bin/binutils/gdb/amd64fbsd-nat.c
@@ -0,0 +1,235 @@
+/* Native-dependent code for FreeBSD/amd64.
+
+   Copyright 2003, 2004 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 "regcache.h"
+
+#include "gdb_assert.h"
+#include <signal.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/sysctl.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"
+#include "amd64-tdep.h"
+#include "amd64-nat.h"
+
+
+/* Offset to the gregset_t location where REG is stored.  */
+#define REG_OFFSET(reg) offsetof (gregset_t, reg)
+
+/* At reg_offset[REGNUM] you'll find the offset to the gregset_t
+   location where the GDB register REGNUM is stored.  Unsupported
+   registers are marked with `-1'.  */
+static int reg_offset[] =
+{
+  REG_OFFSET (r_rax),
+  REG_OFFSET (r_rbx),
+  REG_OFFSET (r_rcx),
+  REG_OFFSET (r_rdx),
+  REG_OFFSET (r_rsi),
+  REG_OFFSET (r_rdi),
+  REG_OFFSET (r_rbp),
+  REG_OFFSET (r_rsp),
+  REG_OFFSET (r_r8),
+  REG_OFFSET (r_r9),
+  REG_OFFSET (r_r10),
+  REG_OFFSET (r_r11),
+  REG_OFFSET (r_r12),
+  REG_OFFSET (r_r13),
+  REG_OFFSET (r_r14),
+  REG_OFFSET (r_r15),
+  REG_OFFSET (r_rip),
+  REG_OFFSET (r_rflags),
+  REG_OFFSET (r_cs),
+  REG_OFFSET (r_ss),
+  -1,
+  -1,
+  -1,
+  -1
+};
+
+
+/* Mapping between the general-purpose registers in FreeBSD/amd64
+   `struct reg' format and GDB's register cache layout for
+   FreeBSD/i386.
+
+   Note that most FreeBSD/amd64 registers are 64-bit, while the
+   FreeBSD/i386 registers are all 32-bit, but since we're
+   little-endian we get away with that.  */
+
+/* From <machine/reg.h>.  */
+static int amd64fbsd32_r_reg_offset[I386_NUM_GREGS] =
+{
+  14 * 8, 13 * 8,		/* %eax, %ecx */
+  12 * 8, 11 * 8,		/* %edx, %ebx */
+  20 * 8, 10 * 8,		/* %esp, %ebp */
+  9 * 8, 8 * 8,			/* %esi, %edi */
+  17 * 8, 19 * 8,		/* %eip, %eflags */
+  18 * 8, 21 * 8,		/* %cs, %ss */
+  -1, -1, -1, -1		/* %ds, %es, %fs, %gs */
+};
+
+
+/* Transfering the registers between GDB, inferiors and core files.  */
+
+/* Fill GDB's register array with the general-purpose register values
+   in *GREGSETP.  */
+
+void
+supply_gregset (gregset_t *gregsetp)
+{
+  amd64_supply_native_gregset (current_regcache, gregsetp, -1);
+}
+
+/* Fill register REGNUM (if it is a general-purpose register) in
+   *GREGSETPS with the value in GDB's register array.  If REGNUM is -1,
+   do this for all registers.  */
+
+void
+fill_gregset (gregset_t *gregsetp, int regnum)
+{
+  amd64_collect_native_gregset (current_regcache, gregsetp, regnum);
+}
+
+/* Fill GDB's register array with the floating-point register values
+   in *FPREGSETP.  */
+
+void
+supply_fpregset (fpregset_t *fpregsetp)
+{
+  amd64_supply_fxsave (current_regcache, -1, fpregsetp);
+}
+
+/* Fill register REGNUM (if it is a floating-point register) in
+   *FPREGSETP with the value in GDB's register array.  If REGNUM is -1,
+   do this for all registers.  */
+
+void
+fill_fpregset (fpregset_t *fpregsetp, int regnum)
+{
+  amd64_fill_fxsave ((char *) fpregsetp, regnum);
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_amd64fbsd_nat (void);
+
+void
+_initialize_amd64fbsd_nat (void)
+{
+  int offset;
+
+  amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset;
+  amd64_native_gregset64_reg_offset = reg_offset;
+
+  /* To support the recognition of signal handlers, i386bsd-tdep.c
+     hardcodes some constants.  Inclusion of this file means that we
+     are compiling a native debugger, which means that we can use the
+     system header files and sysctl(3) to get at the relevant
+     information.  */
+
+#define SC_REG_OFFSET amd64fbsd_sc_reg_offset
+
+  /* We only check the program counter, stack pointer and frame
+     pointer since these members of `struct sigcontext' are essential
+     for providing backtraces.  */
+
+#define SC_RIP_OFFSET SC_REG_OFFSET[AMD64_RIP_REGNUM]
+#define SC_RSP_OFFSET SC_REG_OFFSET[AMD64_RSP_REGNUM]
+#define SC_RBP_OFFSET SC_REG_OFFSET[AMD64_RBP_REGNUM]
+
+  /* Override the default value for the offset of the program counter
+     in the sigcontext structure.  */
+  offset = offsetof (struct sigcontext, sc_rip);
+
+  if (SC_RIP_OFFSET != offset)
+    {
+      warning ("\
+offsetof (struct sigcontext, sc_rip) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.", 
+	       offset, SC_RIP_OFFSET);
+    }
+
+  SC_RIP_OFFSET = offset;
+
+  /* Likewise for the stack pointer.  */
+  offset = offsetof (struct sigcontext, sc_rsp);
+
+  if (SC_RSP_OFFSET != offset)
+    {
+      warning ("\
+offsetof (struct sigcontext, sc_rsp) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.",
+	       offset, SC_RSP_OFFSET);
+    }
+
+  SC_RSP_OFFSET = offset;
+
+  /* And the frame pointer.  */
+  offset = offsetof (struct sigcontext, sc_rbp);
+
+  if (SC_RBP_OFFSET != offset)
+    {
+      warning ("\
+offsetof (struct sigcontext, sc_rbp) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.",
+	       offset, SC_RBP_OFFSET);
+    }
+
+  SC_RBP_OFFSET = offset;
+
+  /* FreeBSD provides a kern.ps_strings sysctl that we can use to
+     locate the sigtramp.  That way we can still recognize a sigtramp
+     if its location is changed in a new kernel.  Of course this is
+     still based on the assumption that the sigtramp is placed
+     directly under the location where the program arguments and
+     environment can be found.  */
+  {
+    int mib[2];
+    long ps_strings;
+    size_t len;
+
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_PS_STRINGS;
+    len = sizeof (ps_strings);
+    if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0)
+      {
+	amd64fbsd_sigtramp_start_addr = ps_strings - 32;
+	amd64fbsd_sigtramp_end_addr = ps_strings;
+      }
+  }
+}