rv34: 1-pass inter MB reconstruction

[ffmpeg] / libavcodec / x86 / cabac.h

diff --git a/libavcodec/x86/cabac.h b/libavcodec/x86/cabac.h
index 52bea9c53d861e57e3755db83823f7bd579834c8..3c3652d5f0ae1ff2d17c7d18f8baa3b49094dce2 100644 (file)
--- a/libavcodec/x86/cabac.h
+++ b/libavcodec/x86/cabac.h
@@ -27,17 +27,17 @@
 #include "config.h"
 
 #if HAVE_FAST_CMOV
-#define BRANCHLESS_GET_CABAC_UPDATE(ret, cabac, statep, low, lowword, range, tmp)\
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp)\
         "mov    "tmp"       , %%ecx     \n\t"\
         "shl    $17         , "tmp"     \n\t"\
         "cmp    "low"       , "tmp"     \n\t"\
         "cmova  %%ecx       , "range"   \n\t"\
         "sbb    %%ecx       , %%ecx     \n\t"\
         "and    %%ecx       , "tmp"     \n\t"\
-        "sub    "tmp"       , "low"     \n\t"\
-        "xor    %%ecx       , "ret"     \n\t"
+        "xor    %%ecx       , "ret"     \n\t"\
+        "sub    "tmp"       , "low"     \n\t"
 #else /* HAVE_FAST_CMOV */
-#define BRANCHLESS_GET_CABAC_UPDATE(ret, cabac, statep, low, lowword, range, tmp)\
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp)\
         "mov    "tmp"       , %%ecx     \n\t"\
         "shl    $17         , "tmp"     \n\t"\
         "sub    "low"       , "tmp"     \n\t"\
@@ -51,70 +51,62 @@
         "xor    "tmp"       , "ret"     \n\t"
 #endif /* HAVE_FAST_CMOV */
 
-#define BRANCHLESS_GET_CABAC(ret, cabac, statep, low, lowword, range, tmp, tmpbyte, byte) \
+#define BRANCHLESS_GET_CABAC(ret, statep, low, lowword, range, tmp, tmpbyte, byte) \
         "movzbl "statep"    , "ret"                                     \n\t"\
         "mov    "range"     , "tmp"                                     \n\t"\
         "and    $0xC0       , "range"                                   \n\t"\
         "movzbl "MANGLE(ff_h264_lps_range)"("ret", "range", 2), "range" \n\t"\
         "sub    "range"     , "tmp"                                     \n\t"\
-        BRANCHLESS_GET_CABAC_UPDATE(ret, cabac, statep, low, lowword,        \
-                                    range, tmp)                              \
+        BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp)   \
         "movzbl " MANGLE(ff_h264_norm_shift) "("range"), %%ecx          \n\t"\
         "shl    %%cl        , "range"                                   \n\t"\
         "movzbl "MANGLE(ff_h264_mlps_state)"+128("ret"), "tmp"          \n\t"\
-        "mov    "tmpbyte"   , "statep"                                  \n\t"\
         "shl    %%cl        , "low"                                     \n\t"\
+        "mov    "tmpbyte"   , "statep"                                  \n\t"\
         "test   "lowword"   , "lowword"                                 \n\t"\
         " jnz   1f                                                      \n\t"\
-        "mov "byte"("cabac"), %%"REG_c"                                 \n\t"\
+        "mov    "byte"      , %%"REG_c"                                 \n\t"\
+        "add"OPSIZE" $2     , "byte"                                    \n\t"\
         "movzwl (%%"REG_c")     , "tmp"                                 \n\t"\
-        "bswap  "tmp"                                                   \n\t"\
-        "shr    $15         , "tmp"                                     \n\t"\
-        "sub    $0xFFFF     , "tmp"                                     \n\t"\
-        "add    $2          , %%"REG_c"                                 \n\t"\
-        "mov    %%"REG_c"   , "byte    "("cabac")                       \n\t"\
         "lea    -1("low")   , %%ecx                                     \n\t"\
         "xor    "low"       , %%ecx                                     \n\t"\
         "shr    $15         , %%ecx                                     \n\t"\
+        "bswap  "tmp"                                                   \n\t"\
+        "shr    $15         , "tmp"                                     \n\t"\
         "movzbl " MANGLE(ff_h264_norm_shift) "(%%ecx), %%ecx            \n\t"\
+        "sub    $0xFFFF     , "tmp"                                     \n\t"\
         "neg    %%ecx                                                   \n\t"\
         "add    $7          , %%ecx                                     \n\t"\
         "shl    %%cl        , "tmp"                                     \n\t"\
         "add    "tmp"       , "low"                                     \n\t"\
         "1:                                                             \n\t"
 
-#if ARCH_X86 && HAVE_7REGS && !defined(BROKEN_RELOCATIONS)
+#if HAVE_7REGS && !defined(BROKEN_RELOCATIONS)
 #define get_cabac_inline get_cabac_inline_x86
 static av_always_inline int get_cabac_inline_x86(CABACContext *c,
                                                  uint8_t *const state)
 {
-    int bit, low, range, tmp;
+    int bit, tmp;
 
     __asm__ volatile(
-        "movl %a6(%5), %2               \n\t"
-        "movl %a7(%5), %1               \n\t"
-        BRANCHLESS_GET_CABAC("%0", "%5", "(%4)", "%1", "%w1", "%2",
-                             "%3", "%b3", "%a8")
-        "movl %2, %a6(%5)               \n\t"
-        "movl %1, %a7(%5)               \n\t"
-
-        :"=&r"(bit), "=&r"(low), "=&r"(range), "=&q"(tmp)
-        :"r"(state), "r"(c),
-         "i"(offsetof(CABACContext, range)), "i"(offsetof(CABACContext, low)),
-         "i"(offsetof(CABACContext, bytestream))
+        BRANCHLESS_GET_CABAC("%0", "(%5)", "%1", "%w1", "%2",
+                             "%3", "%b3", "%4")
+        :"=&r"(bit), "+&r"(c->low), "+&r"(c->range), "=&q"(tmp),
+         "+m"(c->bytestream)
+        :"r"(state)
         : "%"REG_c, "memory"
     );
     return bit & 1;
 }
-#endif /* ARCH_X86 && HAVE_7REGS && !defined(BROKEN_RELOCATIONS) */
+#endif /* HAVE_7REGS && !defined(BROKEN_RELOCATIONS) */
 
 #define get_cabac_bypass_sign get_cabac_bypass_sign_x86
 static av_always_inline int get_cabac_bypass_sign_x86(CABACContext *c, int val)
 {
     x86_reg tmp;
     __asm__ volatile(
-        "movl %a3(%2), %k1                      \n\t"
-        "movl %a4(%2), %%eax                    \n\t"
+        "movl %4, %k1                           \n\t"
+        "movl %2, %%eax                         \n\t"
         "shl $17, %k1                           \n\t"
         "add %%eax, %%eax                       \n\t"
         "sub %k1, %%eax                         \n\t"
@@ -125,22 +117,20 @@ static av_always_inline int get_cabac_bypass_sign_x86(CABACContext *c, int val)
         "sub %%edx, %%ecx                       \n\t"
         "test %%ax, %%ax                        \n\t"
         " jnz 1f                                \n\t"
-        "mov  %a5(%2), %1                       \n\t"
+        "mov  %3, %1                            \n\t"
         "subl $0xFFFF, %%eax                    \n\t"
         "movzwl (%1), %%edx                     \n\t"
         "bswap %%edx                            \n\t"
         "shrl $15, %%edx                        \n\t"
         "add  $2, %1                            \n\t"
         "addl %%edx, %%eax                      \n\t"
-        "mov  %1, %a5(%2)                       \n\t"
+        "mov  %1, %3                            \n\t"
         "1:                                     \n\t"
-        "movl %%eax, %a4(%2)                    \n\t"
+        "movl %%eax, %2                         \n\t"
 
-        :"+c"(val), "=&r"(tmp)
-        :"r"(c),
-         "i"(offsetof(CABACContext, range)), "i"(offsetof(CABACContext, low)),
-         "i"(offsetof(CABACContext, bytestream))
-        : "%eax", "%edx", "memory"
+        :"+c"(val), "=&r"(tmp), "+m"(c->low), "+m"(c->bytestream)
+        :"m"(c->range)
+        : "%eax", "%edx"
     );
     return val;
 }