powerpc/ptrace: move register viewing functions out of ptrace.c

Create a dedicated ptrace-view.c file.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/bfd8c3ed57c9057e4a5d3816737b5ee98c6f7e43.1582848567.git.christophe.leroy@c-s.fr

arch/powerpc/kernel/ptrace/Makefile

@@ -3,9 +3,9 @@
 # Makefile for the linux kernel.
 #
 
-CFLAGS_ptrace.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
+CFLAGS_ptrace-view.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
 
-obj-y				+= ptrace.o
+obj-y				+= ptrace.o ptrace-view.o
 obj-$(CONFIG_PPC64)		+= ptrace32.o
 obj-$(CONFIG_VSX)		+= ptrace-vsx.o
 ifneq ($(CONFIG_VSX),y)

arch/powerpc/kernel/ptrace/ptrace-decl.h

@@ -22,6 +22,45 @@
 #define TFSO(f)	(offsetof(struct thread_fp_state, f))
 #define TSO(f)	(offsetof(struct thread_struct, f))
 
+/*
+ * These are our native regset flavors.
+ */
+enum powerpc_regset {
+	REGSET_GPR,
+	REGSET_FPR,
+#ifdef CONFIG_ALTIVEC
+	REGSET_VMX,
+#endif
+#ifdef CONFIG_VSX
+	REGSET_VSX,
+#endif
+#ifdef CONFIG_SPE
+	REGSET_SPE,
+#endif
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+	REGSET_TM_CGPR,		/* TM checkpointed GPR registers */
+	REGSET_TM_CFPR,		/* TM checkpointed FPR registers */
+	REGSET_TM_CVMX,		/* TM checkpointed VMX registers */
+	REGSET_TM_CVSX,		/* TM checkpointed VSX registers */
+	REGSET_TM_SPR,		/* TM specific SPR registers */
+	REGSET_TM_CTAR,		/* TM checkpointed TAR register */
+	REGSET_TM_CPPR,		/* TM checkpointed PPR register */
+	REGSET_TM_CDSCR,	/* TM checkpointed DSCR register */
+#endif
+#ifdef CONFIG_PPC64
+	REGSET_PPR,		/* PPR register */
+	REGSET_DSCR,		/* DSCR register */
+#endif
+#ifdef CONFIG_PPC_BOOK3S_64
+	REGSET_TAR,		/* TAR register */
+	REGSET_EBB,		/* EBB registers */
+	REGSET_PMR,		/* Performance Monitor Registers */
+#endif
+#ifdef CONFIG_PPC_MEM_KEYS
+	REGSET_PKEY,		/* AMR register */
+#endif
+};
+
 /* ptrace-(no)vsx */
 
 int fpr_get(struct task_struct *target, const struct user_regset *regset,
@@ -131,3 +170,7 @@ int tm_cgpr32_get(struct task_struct *target, const struct user_regset *regset,
 int tm_cgpr32_set(struct task_struct *target, const struct user_regset *regset,
 		  unsigned int pos, unsigned int count,
 		  const void *kbuf, const void __user *ubuf);
+
+/* ptrace-view */
+
+extern const struct user_regset_view user_ppc_native_view;