This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-ia64 / kprobes.h

diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
new file mode 100644 (file)
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+++ b/include/asm-ia64/kprobes.h
@@ -0,0 +1,128 @@
+#ifndef _ASM_KPROBES_H
+#define _ASM_KPROBES_H
+/*
+ *  Kernel Probes (KProbes)
+ *  include/asm-ia64/kprobes.h
+ *
+ * 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, 2002, 2004
+ * Copyright (C) Intel Corporation, 2005
+ *
+ * 2005-Apr     Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
+ *              <anil.s.keshavamurthy@intel.com> adapted from i386
+ */
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/percpu.h>
+#include <asm/break.h>
+
+#define MAX_INSN_SIZE   16
+#define BREAK_INST     (long)(__IA64_BREAK_KPROBE << 6)
+
+typedef union cmp_inst {
+       struct {
+       unsigned long long qp : 6;
+       unsigned long long p1 : 6;
+       unsigned long long c  : 1;
+       unsigned long long r2 : 7;
+       unsigned long long r3 : 7;
+       unsigned long long p2 : 6;
+       unsigned long long ta : 1;
+       unsigned long long x2 : 2;
+       unsigned long long tb : 1;
+       unsigned long long opcode : 4;
+       unsigned long long reserved : 23;
+       }f;
+       unsigned long long l;
+} cmp_inst_t;
+
+struct kprobe;
+
+typedef struct _bundle {
+       struct {
+               unsigned long long template : 5;
+               unsigned long long slot0 : 41;
+               unsigned long long slot1_p0 : 64-46;
+       } quad0;
+       struct {
+               unsigned long long slot1_p1 : 41 - (64-46);
+               unsigned long long slot2 : 41;
+       } quad1;
+} __attribute__((__aligned__(16)))  bundle_t;
+
+struct prev_kprobe {
+       struct kprobe *kp;
+       unsigned long status;
+};
+
+#define        MAX_PARAM_RSE_SIZE      (0x60+0x60/0x3f)
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+       unsigned long kprobe_status;
+       struct pt_regs jprobe_saved_regs;
+       unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE];
+       unsigned long *bsp;
+       unsigned long cfm;
+       struct prev_kprobe prev_kprobe;
+};
+
+#define JPROBE_ENTRY(pentry)   (kprobe_opcode_t *)pentry
+
+#define ARCH_SUPPORTS_KRETPROBES
+
+#define SLOT0_OPCODE_SHIFT     (37)
+#define SLOT1_p1_OPCODE_SHIFT  (37 - (64-46))
+#define SLOT2_OPCODE_SHIFT     (37)
+
+#define INDIRECT_CALL_OPCODE           (1)
+#define IP_RELATIVE_CALL_OPCODE                (5)
+#define IP_RELATIVE_BRANCH_OPCODE      (4)
+#define IP_RELATIVE_PREDICT_OPCODE     (7)
+#define LONG_BRANCH_OPCODE             (0xC)
+#define LONG_CALL_OPCODE               (0xD)
+#define arch_remove_kprobe(p)          do {} while (0)
+
+typedef struct kprobe_opcode {
+       bundle_t bundle;
+} kprobe_opcode_t;
+
+struct fnptr {
+       unsigned long ip;
+       unsigned long gp;
+};
+
+/* Architecture specific copy of original instruction*/
+struct arch_specific_insn {
+       /* copy of the instruction to be emulated */
+       kprobe_opcode_t insn;
+ #define INST_FLAG_FIX_RELATIVE_IP_ADDR                1
+ #define INST_FLAG_FIX_BRANCH_REG              2
+ #define INST_FLAG_BREAK_INST                  4
+       unsigned long inst_flag;
+       unsigned short target_br_reg;
+};
+
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+                                   unsigned long val, void *data);
+
+/* ia64 does not need this */
+static inline void jprobe_return(void)
+{
+}
+extern void invalidate_stacked_regs(void);
+extern void flush_register_stack(void);
+
+#endif                         /* _ASM_KPROBES_H */