Title: [9839] trunk/include/asm-generic/ptrace.h: asm-generic/ptrace.h: start a common low level ptrace helper
- Revision
- 9839
- Author
- vapier
- Date
- 2011-04-14 21:09:26 -0400 (Thu, 14 Apr 2011)
Log Message
asm-generic/ptrace.h: start a common low level ptrace helper
This implements a bunch of helper funcs for poking the registers of a
ptrace structure. Now common code should be able to portably update
specific registers (like kgdb updating the PC).
Added Paths
Diff
Added: trunk/include/asm-generic/ptrace.h (0 => 9839)
--- trunk/include/asm-generic/ptrace.h (rev 0)
+++ trunk/include/asm-generic/ptrace.h 2011-04-15 01:09:26 UTC (rev 9839)
@@ -0,0 +1,74 @@
+/*
+ * Common low level (register) ptrace helpers
+ *
+ * Copyright 2004-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ASM_GENERIC_PTRACE_H__
+#define __ASM_GENERIC_PTRACE_H__
+
+#ifndef __ASSEMBLY__
+
+/* Helpers for working with the instruction pointer */
+#ifndef GET_IP
+#define GET_IP(regs) ((regs)->pc)
+#endif
+#ifndef SET_IP
+#define SET_IP(regs, val) (GET_IP(regs) = (val))
+#endif
+
+static inline unsigned long instruction_pointer(struct pt_regs *regs)
+{
+ return GET_IP(regs);
+}
+static inline void instruction_pointer_set(struct pt_regs *regs,
+ unsigned long val)
+{
+ SET_IP(regs, val);
+}
+
+#ifndef profile_pc
+#define profile_pc(regs) instruction_pointer(regs)
+#endif
+
+/* Helpers for working with the user stack pointer */
+#ifndef GET_USP
+#define GET_USP(regs) ((regs)->usp)
+#endif
+#ifndef SET_USP
+#define SET_USP(regs, val) (GET_USP(regs) = (val))
+#endif
+
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+ return GET_USP(regs);
+}
+static inline void user_stack_pointer_set(struct pt_regs *regs,
+ unsigned long val)
+{
+ SET_USP(regs, val);
+}
+
+/* Helpers for working with the frame pointer */
+#ifndef GET_FP
+#define GET_FP(regs) ((regs)->fp)
+#endif
+#ifndef SET_FP
+#define SET_FP(regs, val) (GET_FP(regs) = (val))
+#endif
+
+static inline unsigned long frame_pointer(struct pt_regs *regs)
+{
+ return GET_FP(regs);
+}
+static inline void frame_pointer_set(struct pt_regs *regs,
+ unsigned long val)
+{
+ SET_FP(regs, val);
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif
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