Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / mips / include / asm / kprobes.h

diff --git a/kernel/arch/mips/include/asm/kprobes.h b/kernel/arch/mips/include/asm/kprobes.h
new file mode 100644 (file)
index 0000000..daba1f9
--- /dev/null
+++ b/kernel/arch/mips/include/asm/kprobes.h
@@ -0,0 +1,97 @@
+/*
+ *  Kernel Probes (KProbes)
+ *  include/asm-mips/kprobes.h
+ *
+ *  Copyright 2006 Sony Corp.
+ *  Copyright 2010 Cavium Networks
+ *
+ *  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; version 2 of the License.
+ *
+ *  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
+ */
+
+#ifndef _ASM_KPROBES_H
+#define _ASM_KPROBES_H
+
+#include <linux/ptrace.h>
+#include <linux/types.h>
+
+#include <asm/cacheflush.h>
+#include <asm/kdebug.h>
+#include <asm/inst.h>
+
+#define         __ARCH_WANT_KPROBES_INSN_SLOT
+
+struct kprobe;
+struct pt_regs;
+
+typedef union mips_instruction kprobe_opcode_t;
+
+#define MAX_INSN_SIZE 2
+
+#define flush_insn_slot(p)                                             \
+do {                                                                   \
+       flush_icache_range((unsigned long)p->addr,                      \
+                          (unsigned long)p->addr +                     \
+                          (MAX_INSN_SIZE * sizeof(kprobe_opcode_t)));  \
+} while (0)
+
+
+#define kretprobe_blacklist_size 0
+
+void arch_remove_kprobe(struct kprobe *p);
+
+/* Architecture specific copy of original instruction*/
+struct arch_specific_insn {
+       /* copy of the original instruction */
+       kprobe_opcode_t *insn;
+};
+
+struct prev_kprobe {
+       struct kprobe *kp;
+       unsigned long status;
+       unsigned long old_SR;
+       unsigned long saved_SR;
+       unsigned long saved_epc;
+};
+
+#define MAX_JPROBES_STACK_SIZE 128
+#define MAX_JPROBES_STACK_ADDR \
+       (((unsigned long)current_thread_info()) + THREAD_SIZE - 32 - sizeof(struct pt_regs))
+
+#define MIN_JPROBES_STACK_SIZE(ADDR)                                   \
+       ((((ADDR) + MAX_JPROBES_STACK_SIZE) > MAX_JPROBES_STACK_ADDR)   \
+               ? MAX_JPROBES_STACK_ADDR - (ADDR)                       \
+               : MAX_JPROBES_STACK_SIZE)
+
+
+#define SKIP_DELAYSLOT 0x0001
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+       unsigned long kprobe_status;
+       unsigned long kprobe_old_SR;
+       unsigned long kprobe_saved_SR;
+       unsigned long kprobe_saved_epc;
+       unsigned long jprobe_saved_sp;
+       struct pt_regs jprobe_saved_regs;
+       /* Per-thread fields, used while emulating branches */
+       unsigned long flags;
+       unsigned long target_epc;
+       u8 jprobes_stack[MAX_JPROBES_STACK_SIZE];
+       struct prev_kprobe prev_kprobe;
+};
+
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+                                   unsigned long val, void *data);
+
+#endif                         /* _ASM_KPROBES_H */