sparc64:Support User Probes for sparc

Signed-off-by: Eric Saint Etienne <eric.saint.etienne@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 59 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/uprobes.h b/arch/sparc/include/asm/uprobes.h
new file mode 100644
index 000000000000..f87aae5a908e
--- /dev/null
+++ b/arch/sparc/include/asm/uprobes.h
@@ -0,0 +1,59 @@
+#ifndef _ASM_UPROBES_H
+#define _ASM_UPROBES_H
+/*
+ * User-space Probes (UProbes) for sparc
+ *
+ * Copyright (C) 2013 Oracle, Inc.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Jose E. Marchesi <jose.marchesi@oracle.com>
+ *	Eric Saint Etienne <eric.saint.etienne@oracle.com>
+ */
+
+typedef u32 uprobe_opcode_t;
+
+#define MAX_UINSN_BYTES		4
+#define UPROBE_XOL_SLOT_BYTES	(MAX_UINSN_BYTES * 2)
+
+#define UPROBE_SWBP_INSN_SIZE	4
+#define UPROBE_SWBP_INSN	0x91d02073 /* ta 0x73 */
+#define UPROBE_STP_INSN		0x91d02074 /* ta 0x74 */
+
+#define ANNUL_BIT (1 << 29)
+
+struct arch_uprobe {
+	union {
+		u8  insn[MAX_UINSN_BYTES];
+		u32 ixol;
+	};
+};
+
+struct arch_uprobe_task {
+	u32 saved_tpc;
+	u32 saved_tnpc;
+};
+
+struct task_struct;
+struct notifier_block;
+
+extern int  arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr);
+extern int  arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+extern int  arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
+extern int  arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
+extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+
+#endif	/* _ASM_UPROBES_H */