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authorJan Willeke <willeke@de.ibm.com>2014-09-22 16:39:06 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-09-25 10:52:17 +0200
commit2a0a5b2299b9bef76123fac91e68d39cb361c33e (patch)
treefa8872070bf295dbbc57e7063db6e6baf739f543 /arch/s390/include/asm/uprobes.h
parent975fab17399a2b29985166181ad80e5f50fa42e9 (diff)
s390/uprobes: architecture backend for uprobes
Signed-off-by: Jan Willeke <willeke@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/uprobes.h')
-rw-r--r--arch/s390/include/asm/uprobes.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/s390/include/asm/uprobes.h b/arch/s390/include/asm/uprobes.h
new file mode 100644
index 000000000000..1411dff7fea7
--- /dev/null
+++ b/arch/s390/include/asm/uprobes.h
@@ -0,0 +1,42 @@
+/*
+ * User-space Probes (UProbes) for s390
+ *
+ * Copyright IBM Corp. 2014
+ * Author(s): Jan Willeke,
+ */
+
+#ifndef _ASM_UPROBES_H
+#define _ASM_UPROBES_H
+
+#include <linux/notifier.h>
+
+typedef u16 uprobe_opcode_t;
+
+#define UPROBE_XOL_SLOT_BYTES 256 /* cache aligned */
+
+#define UPROBE_SWBP_INSN 0x0002
+#define UPROBE_SWBP_INSN_SIZE 2
+
+struct arch_uprobe {
+ union{
+ uprobe_opcode_t insn[3];
+ uprobe_opcode_t ixol[3];
+ };
+ unsigned int saved_per : 1;
+ unsigned int saved_int_code;
+};
+
+struct arch_uprobe_task {
+};
+
+int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
+ unsigned long addr);
+int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
+int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
+ void *data);
+void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
+unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
+ struct pt_regs *regs);
+#endif /* _ASM_UPROBES_H */

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