From 2768f7e4fef56f2d48b4593b78e953098d456582 Mon Sep 17 00:00:00 2001
From: Michael Kostylev <michael.kostylev@gmail.com>
Date: Thu, 16 May 2013 09:29:46 -0400
Subject: [PATCH] sparc: VIS mnemonics

Currently, if VIS is enabled by configure, it will also be enabled at
run-time regardless of its support in the hardware. Thus, masking VIS
usage as it is done in vis.h by constructing binary instructions is
pointless. Using normal VIS mnemonics in inline assembly allows to take
advantage of automatic register allocation, gets rid of register
variables, which are unsupported by suncc for SPARC, and improves code
readability.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
---
 libavcodec/sparc/vis.h | 36 ++++++++----------------------------
 1 file changed, 8 insertions(+), 28 deletions(-)

diff --git a/libavcodec/sparc/vis.h b/libavcodec/sparc/vis.h
index 30dc166899..ff2fb9d2e9 100644
--- a/libavcodec/sparc/vis.h
+++ b/libavcodec/sparc/vis.h
@@ -150,12 +150,9 @@ static inline int vis_level(void)
 #define vis_m2r_2(op,mem1,mem2,rd) \
         __asm__ volatile (#op "\t[%0 + %1], %%f" #rd : : "r" (mem1), "r" (mem2) )
 
-static inline void vis_set_gsr(unsigned int _val)
+static inline void vis_set_gsr(unsigned int val)
 {
-        register unsigned int val __asm__("g1");
-
-        val = _val;
-        __asm__ volatile(".word 0xa7804000"
+        __asm__ volatile("mov %0,%%asr19"
                              : : "r" (val));
 }
 
@@ -208,36 +205,19 @@ static inline void vis_set_gsr(unsigned int _val)
 
 /* Alignment instructions.  */
 
-static inline const void *vis_alignaddr(const void *_ptr)
+static inline const void *vis_alignaddr(const void *ptr)
 {
-        register const void *ptr __asm__("g1");
-
-        ptr = _ptr;
-
-        __asm__ volatile(".word %2"
+        __asm__ volatile("alignaddr %0, %%g0, %0"
                              : "=&r" (ptr)
-                             : "0" (ptr),
-                               "i" (vis_opc_base | vis_opf(0x18) |
-                                    vis_rs1_s(1) |
-                                    vis_rs2_s(0) |
-                                    vis_rd_s(1)));
+                             : "0" (ptr));
 
         return ptr;
 }
 
-static inline void vis_alignaddr_g0(void *_ptr)
+static inline void vis_alignaddr_g0(void *ptr)
 {
-        register void *ptr __asm__("g1");
-
-        ptr = _ptr;
-
-        __asm__ volatile(".word %2"
-                             : "=&r" (ptr)
-                             : "0" (ptr),
-                               "i" (vis_opc_base | vis_opf(0x18) |
-                                    vis_rs1_s(1) |
-                                    vis_rs2_s(0) |
-                                    vis_rd_s(0)));
+        __asm__ volatile("alignaddr %0, %%g0, %%g0"
+                             : : "r" (ptr));
 }
 
 #define vis_faligndata(rs1,rs2,rd)        vis_dd2d(0x48, rs1, rs2, rd)