[FFmpeg-cvslog] avutil/x86inc: fix warnings when assembling with Nasm 2.15

[Henrik Gramner]

ffmpeg | branch: release/4.3 | Henrik Gramner <gramner at twoorioles.com> | Thu Jul  9 11:47:35 2020 -0300| [bb3490e7f9645babab4cf84fdb2b2dd4922d81a6] | committer: James Almer

avutil/x86inc: fix warnings when assembling with Nasm 2.15

Some new warnings regarding use of empty macro parameters has
been added, so adjust some x86inc code to silence those.

Fixes part of ticket #8771

Signed-off-by: James Almer <jamrial at gmail.com>
(cherry picked from commit 0b2b03568f22fdb361d9a44c262bfb9269335f80)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bb3490e7f9645babab4cf84fdb2b2dd4922d81a6
---

 libavutil/x86/x86inc.asm | 46 ++++++++++++++++++++++++++++++----------------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index 5044ee86f0..01c35e3a4b 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -411,16 +411,6 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
     %endif
 %endmacro
 
-%macro DEFINE_ARGS_INTERNAL 3+
-    %ifnum %2
-        DEFINE_ARGS %3
-    %elif %1 == 4
-        DEFINE_ARGS %2
-    %elif %1 > 4
-        DEFINE_ARGS %2, %3
-    %endif
-%endmacro
-
 %if WIN64 ; Windows x64 ;=================================================
 
 DECLARE_REG 0,  rcx
@@ -439,7 +429,7 @@ DECLARE_REG 12, R15, 104
 DECLARE_REG 13, R12, 112
 DECLARE_REG 14, R13, 120
 
-%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
     %assign num_args %1
     %assign regs_used %2
     ASSERT regs_used >= num_args
@@ -451,7 +441,15 @@ DECLARE_REG 14, R13, 120
         WIN64_SPILL_XMM %3
     %endif
     LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
-    DEFINE_ARGS_INTERNAL %0, %4, %5
+    %if %0 > 4
+        %ifnum %4
+            DEFINE_ARGS %5
+        %else
+            DEFINE_ARGS %4, %5
+        %endif
+    %elifnnum %4
+        DEFINE_ARGS %4
+    %endif
 %endmacro
 
 %macro WIN64_PUSH_XMM 0
@@ -547,7 +545,7 @@ DECLARE_REG 12, R15, 56
 DECLARE_REG 13, R12, 64
 DECLARE_REG 14, R13, 72
 
-%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
     %assign num_args %1
     %assign regs_used %2
     %assign xmm_regs_used %3
@@ -557,7 +555,15 @@ DECLARE_REG 14, R13, 72
     PUSH_IF_USED 9, 10, 11, 12, 13, 14
     ALLOC_STACK %4
     LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
-    DEFINE_ARGS_INTERNAL %0, %4, %5
+    %if %0 > 4
+        %ifnum %4
+            DEFINE_ARGS %5
+        %else
+            DEFINE_ARGS %4, %5
+        %endif
+    %elifnnum %4
+        DEFINE_ARGS %4
+    %endif
 %endmacro
 
 %define has_epilogue regs_used > 9 || stack_size > 0 || vzeroupper_required
@@ -598,7 +604,7 @@ DECLARE_REG 6, ebp, 28
 
 DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
 
-%macro PROLOGUE 2-5+ ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
     %assign num_args %1
     %assign regs_used %2
     ASSERT regs_used >= num_args
@@ -613,7 +619,15 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
     PUSH_IF_USED 3, 4, 5, 6
     ALLOC_STACK %4
     LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
-    DEFINE_ARGS_INTERNAL %0, %4, %5
+    %if %0 > 4
+        %ifnum %4
+            DEFINE_ARGS %5
+        %else
+            DEFINE_ARGS %4, %5
+        %endif
+    %elifnnum %4
+        DEFINE_ARGS %4
+    %endif
 %endmacro
 
 %define has_epilogue regs_used > 3 || stack_size > 0 || vzeroupper_required