[FFmpeg-cvslog] x86: fix build with nasm 2.08

[Mans Rullgard]

ffmpeg | branch: master | Mans Rullgard <mans at mansr.com> | Mon Aug  6 02:26:15 2012 +0100| [edd82267958fbbd34eca4f4dbfb96197b9b40ab5] | committer: Mans Rullgard

x86: fix build with nasm 2.08

It appears that something goes wrong in old nasm versions when the
%+ operator is used in the last argument of a macro invocation and
this argument is tested with %ifdef within the macro.  This patch
rearranges the macro arguments such that the %+ operator is never
used in the last argument.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=edd82267958fbbd34eca4f4dbfb96197b9b40ab5
---

 libavutil/x86/x86inc.asm |   18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index e729924..5cb200f 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -505,12 +505,8 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
 ; Applies any symbol mangling needed for C linkage, and sets up a define such that
 ; subsequent uses of the function name automatically refer to the mangled version.
 ; Appends cpuflags to the function name if cpuflags has been specified.
-%macro cglobal 1-2+ ; name, [PROLOGUE args]
-%if %0 == 1
-    cglobal_internal %1 %+ SUFFIX
-%else
+%macro cglobal 1-2+ "" ; name, [PROLOGUE args]
     cglobal_internal %1 %+ SUFFIX, %2
-%endif
 %endmacro
 %macro cglobal_internal 1-2+
     %ifndef cglobaled_%1
@@ -528,7 +524,7 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
     %1:
     RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer
     %assign stack_offset 0
-    %if %0 > 1
+    %ifnidn %2, ""
         PROLOGUE %2
     %endif
 %endmacro
@@ -795,13 +791,13 @@ INIT_XMM
 
 ; Append cpuflags to the callee's name iff the appended name is known and the plain name isn't
 %macro call 1
-    call_internal %1, %1 %+ SUFFIX
+    call_internal %1 %+ SUFFIX, %1
 %endmacro
 %macro call_internal 2
-    %xdefine %%i %1
-    %ifndef cglobaled_%1
-        %ifdef cglobaled_%2
-            %xdefine %%i %2
+    %xdefine %%i %2
+    %ifndef cglobaled_%2
+        %ifdef cglobaled_%1
+            %xdefine %%i %1
         %endif
     %endif
     call %%i