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>
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index bac6a94..ca57f08 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -61,7 +61,10 @@ extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
#define force_successful_syscall_return() set_thread_noerror(1)
#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
#define instruction_pointer(regs) ((regs)->tpc)
-#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
+#define instruction_pointer_set(regs, val) do { \
+ (regs)->tpc = (val); \
+ (regs)->tnpc = (val)+4; \
+ } while (0)
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
static inline int is_syscall_success(struct pt_regs *regs)
{
@@ -77,6 +80,36 @@ unsigned long profile_pc(struct pt_regs *);
#else
#define profile_pc(regs) instruction_pointer(regs)
#endif
+
+#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
+
+extern int regs_query_register_offset(const char *name);
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs: pt_regs from which register value is gotten
+ * @offset: offset number of the register.
+ *
+ * regs_get_register returns the value of a register whose
+ * offset from @regs. The @offset is the offset of the register
+ * in struct pt_regs. If @offset is bigger than MAX_REG_OFFSET,
+ * this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+ unsigned long offset)
+{
+ if (unlikely(offset >= MAX_REG_OFFSET))
+ return 0;
+ if (offset == PT_V9_Y)
+ return *(unsigned int *)((unsigned long)regs + offset);
+ return *(unsigned long *)((unsigned long)regs + offset);
+}
+
+/* Valid only for Kernel mode traps. */
+static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
+{
+ return regs->u_regs[UREG_I6];
+}
#else /* __ASSEMBLY__ */
#endif /* __ASSEMBLY__ */
#else /* (defined(__sparc__) && defined(__arch64__)) */