Fix wrong bitstream mode for AC-3.

[ffmpeg] / libavutil / x86_cpu.h

diff --git a/libavutil/x86_cpu.h b/libavutil/x86_cpu.h
index 08d31461fb2c700ea63aa2af183876c43d87ce05..c3341c232d3adda1355998bc81903613d69f5ab7 100644 (file)
--- a/libavutil/x86_cpu.h
+++ b/libavutil/x86_cpu.h
@@ -25,6 +25,7 @@
 #include "config.h"
 
 #if ARCH_X86_64
+#    define OPSIZE "q"
 #    define REG_a "rax"
 #    define REG_b "rbx"
 #    define REG_c "rcx"
@@ -45,6 +46,7 @@ typedef int64_t x86_reg;
 
 #elif ARCH_X86_32
 
+#    define OPSIZE "l"
 #    define REG_a "eax"
 #    define REG_b "ebx"
 #    define REG_c "ecx"
@@ -73,4 +75,24 @@ typedef int x86_reg;
 #    define BROKEN_RELOCATIONS 1
 #endif
 
+/*
+ * If gcc is not set to support sse (-msse) it will not accept xmm registers
+ * in the clobber list for inline asm. XMM_CLOBBERS takes a list of xmm
+ * registers to be marked as clobbered and evaluates to nothing if they are
+ * not supported, or to the list itself if they are supported. Since a clobber
+ * list may not be empty, XMM_CLOBBERS_ONLY should be used if the xmm
+ * registers are the only in the clobber list.
+ * For example a list with "eax" and "xmm0" as clobbers should become:
+ * : XMM_CLOBBERS("xmm0",) "eax"
+ * and a list with only "xmm0" should become:
+ * XMM_CLOBBERS_ONLY("xmm0")
+ */
+#if HAVE_XMM_CLOBBERS
+#    define XMM_CLOBBERS(...)        __VA_ARGS__
+#    define XMM_CLOBBERS_ONLY(...) : __VA_ARGS__
+#else
+#    define XMM_CLOBBERS(...)
+#    define XMM_CLOBBERS_ONLY(...)
+#endif
+
 #endif /* AVUTIL_X86_CPU_H */