1 files changed, 213 insertions, 0 deletions
diff --git a/gnu/usr.bin/gdb/gdbserver/fbsd-amd64-low.c b/gnu/usr.bin/gdb/gdbserver/fbsd-amd64-low.c
new file mode 100644
index 0000000..82a8c93
--- /dev/null
+++ b/gnu/usr.bin/gdb/gdbserver/fbsd-amd64-low.c
@@ -0,0 +1,213 @@
+/* GNU/FreeBSD/amd64 specific low level interface, for the remote server for GDB.
+   Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
+   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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "server.h"
+#include "fbsd-low.h"
+#include "i387-fp.h"
+
+#include <sys/stddef.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+/* Mapping between the general-purpose registers in `struct user'
+   format and GDB's register array layout.  */
+static int amd64_regmap[] = {
+	offsetof(struct reg, r_rax),
+	offsetof(struct reg, r_rbx),
+	offsetof(struct reg, r_rcx),
+	offsetof(struct reg, r_rdx),
+	offsetof(struct reg, r_rsi),
+	offsetof(struct reg, r_rdi),
+	offsetof(struct reg, r_rbp),
+	offsetof(struct reg, r_rsp),
+	offsetof(struct reg, r_r8),
+	offsetof(struct reg, r_r9),
+	offsetof(struct reg, r_r10),
+	offsetof(struct reg, r_r11),
+	offsetof(struct reg, r_r12),
+	offsetof(struct reg, r_r13),
+	offsetof(struct reg, r_r14),
+	offsetof(struct reg, r_r15),
+	offsetof(struct reg, r_rip),
+	offsetof(struct reg, r_rflags),	/* XXX 64-bit */
+	offsetof(struct reg, r_cs),
+	offsetof(struct reg, r_ss),
+	offsetof(struct reg, r_ds),
+	offsetof(struct reg, r_es),
+	offsetof(struct reg, r_fs),
+	offsetof(struct reg, r_gs),
+};
+#define	AMD64_NUM_REGS	(sizeof(amd64_regmap) / sizeof(amd64_regmap[0]))
+
+static const char amd64_breakpoint[] = { 0xCC };
+#define	AMD64_BP_LEN	1
+
+extern int debug_threads;
+
+static int
+amd64_cannot_store_register(int regno)
+{
+
+	return (regno >= AMD64_NUM_REGS);
+}
+
+static int
+amd64_cannot_fetch_register(int regno)
+{
+
+	return (regno >= AMD64_NUM_REGS);
+}
+
+static void
+amd64_fill_gregset(void *buf)
+{
+	int i;
+
+	for (i = 0; i < AMD64_NUM_REGS; i++)
+		collect_register(i, ((char *)buf) + amd64_regmap[i]);
+}
+
+static void
+amd64_store_gregset(const void *buf)
+{
+	int i;
+
+	for (i = 0; i < AMD64_NUM_REGS; i++)
+		supply_register(i, ((char *)buf) + amd64_regmap[i]);
+}
+
+static void
+amd64_fill_fpregset(void *buf)
+{
+
+	i387_cache_to_fsave(buf);
+}
+
+static void
+amd64_store_fpregset(const void *buf)
+{
+
+	i387_fsave_to_cache(buf);
+}
+
+static void
+amd64_fill_fpxregset(void *buf)
+{  
+
+	i387_cache_to_fxsave(buf);
+}
+
+static void
+amd64_store_fpxregset(const void *buf)
+{
+
+	i387_fxsave_to_cache(buf);
+}
+
+
+struct regset_info target_regsets[] = {
+	{
+		PT_GETREGS,
+		PT_SETREGS,
+		sizeof(struct reg),
+		GENERAL_REGS,
+		amd64_fill_gregset,
+		amd64_store_gregset,
+	},
+#ifdef HAVE_PTRACE_GETFPXREGS
+	{
+		PTRACE_GETFPXREGS,
+		PTRACE_SETFPXREGS,
+		sizeof(elf_fpxregset_t),
+		EXTENDED_REGS,
+		amd64_fill_fpxregset,
+		amd64_store_fpxregset,
+	},
+#endif
+	{
+		PT_GETFPREGS,
+		PT_SETFPREGS,
+		sizeof(struct fpreg),
+		FP_REGS,
+		amd64_fill_fpregset,
+		amd64_store_fpregset,
+	},
+	{
+		0,
+		0,
+		-1,
+		-1,
+		NULL,
+		NULL,
+	}
+};
+
+static CORE_ADDR
+amd64_get_pc(void)
+{
+	unsigned long pc;
+
+	collect_register_by_name("rip", &pc);
+
+	if (debug_threads)
+		fprintf(stderr, "stop pc (before any decrement) is %016lx\n", pc);
+
+	return (pc);
+}
+
+static void
+amd64_set_pc(CORE_ADDR newpc)
+{
+
+	if (debug_threads)
+		fprintf(stderr, "set pc to %016lx\n", (long)newpc);
+	supply_register_by_name("rip", &newpc);
+}
+
+static int
+amd64_breakpoint_at(CORE_ADDR pc)
+{
+	unsigned char c;
+
+	read_inferior_memory(pc, &c, 1);
+	if (c == 0xCC)
+		return (1);
+
+	return (0);
+}
+
+struct fbsd_target_ops the_low_target = {
+	AMD64_NUM_REGS,
+	amd64_regmap,
+	amd64_cannot_fetch_register,
+	amd64_cannot_store_register,
+	amd64_get_pc,
+	amd64_set_pc,
+	amd64_breakpoint,
+	AMD64_BP_LEN,
+	NULL,
+	1,
+	amd64_breakpoint_at,
+};