Merge tag 'xtensa-20170507' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - clearly mark references to spilled register locations with SPILL_SLOT
   macros

 - clean up xtensa ptrace: use generic tracehooks, move internal kernel
   definitions from uapi/asm to asm, make locally-used functions static,
   fix code style and alignment

 - use command line parameters passed to ISS as kernel command line.

* tag 'xtensa-20170507' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: clean up access to spilled registers locations
  xtensa: use generic tracehooks
  xtensa: move internal ptrace definitions from uapi/asm to asm
  xtensa: clean up xtensa/kernel/ptrace.c
  xtensa: drop unused fast_io_protect function
  xtensa: use ITLB_HIT_BIT instead of hardcoded number
  xtensa: ISS: update kernel command line in platform_setup
  xtensa: ISS: add argc/argv simcall definitions
  xtensa: ISS: cleanup setup.c

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 86ffcd68e496..003eeee3fbc6 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -113,6 +113,21 @@
  */
 #define MAKE_PC_FROM_RA(ra,sp)    (((ra) & 0x3fffffff) | ((sp) & 0xc0000000))
 
+/* Spill slot location for the register reg in the spill area under the stack
+ * pointer sp. reg must be in the range [0..4).
+ */
+#define SPILL_SLOT(sp, reg) (*(((unsigned long *)(sp)) - 4 + (reg)))
+
+/* Spill slot location for the register reg in the spill area under the stack
+ * pointer sp for the call8. reg must be in the range [4..8).
+ */
+#define SPILL_SLOT_CALL8(sp, reg) (*(((unsigned long *)(sp)) - 12 + (reg)))
+
+/* Spill slot location for the register reg in the spill area under the stack
+ * pointer sp for the call12. reg must be in the range [4..12).
+ */
+#define SPILL_SLOT_CALL12(sp, reg) (*(((unsigned long *)(sp)) - 16 + (reg)))
+
 typedef struct {
 	unsigned long seg;
 } mm_segment_t;