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Subject[PATCH v4 3.0-rc2-tip 1/22] 1: X86 specific breakpoint definitions.

Provides definitions for the breakpoint instruction and x86 specific
uprobe info structure.

Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
---
arch/x86/Kconfig | 3 +++
arch/x86/include/asm/uprobes.h | 40 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 0 deletions(-)
create mode 100644 arch/x86/include/asm/uprobes.h
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 30041d8..7c843e2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -243,6 +243,9 @@ config ARCH_CPU_PROBE_RELEASE
def_bool y
depends on HOTPLUG_CPU

+config ARCH_SUPPORTS_UPROBES
+ def_bool y
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"

diff --git a/arch/x86/include/asm/uprobes.h b/arch/x86/include/asm/uprobes.h
new file mode 100644
index 0000000..192ba4a
--- /dev/null
+++ b/arch/x86/include/asm/uprobes.h
@@ -0,0 +1,40 @@
+#ifndef _ASM_UPROBES_H
+#define _ASM_UPROBES_H
+/*
+ * Userspace Probes (UProbes) for x86
+ *
+ * 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.
+ *
+ * Copyright (C) IBM Corporation, 2008-2011
+ * Authors:
+ * Srikar Dronamraju
+ * Jim Keniston
+ */
+
+typedef u8 uprobe_opcode_t;
+#define MAX_UINSN_BYTES 16
+#define UPROBES_XOL_SLOT_BYTES 128 /* to keep it cache aligned */
+
+#define UPROBES_BKPT_INSN 0xcc
+#define UPROBES_BKPT_INSN_SIZE 1
+
+#ifdef CONFIG_X86_64
+struct uprobe_arch_info {
+ unsigned long rip_rela_target_address;
+};
+#else
+struct uprobe_arch_info {};
+#endif
+#endif /* _ASM_UPROBES_H */

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