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# T2 SDE: package/*/mplayer/hotfix-x86-mathops.patch
# Copyright (C) 2006 - 2024 The T2 SDE Project
# 
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# more information can be found in the files COPYING and README.
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# patched project is licensed under, as long as it is an OpenSource license
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Mplayer 1.5 is not using updated versions of FFmpeg where x86
assembly macros (__asm) of mathops.h used therein are outdated &
those were already fixed (in Jul 20, 2023) - see:
 - https://github.com/FFmpeg/FFmpeg/commit/effadce6c756247ea8bae32dc13bb3e6f464f0eb

Building without this patch results in the below error message during
`make`:

./libavcodec/x86/mathops.h: Assembler messages:
./libavcodec/x86/mathops.h:125: Error: operand type mismatch for `shr'
^^^^ // REPEATS A FEW TIMES THEN:
./libavcodec/x86/mathops.h:125: Error: operand type mismatch for `shr'
make[1]: *** [ffbuild/common.mak:78: libavformat/adtsenc.o] Error 1

  - Mehdi Ahmadi <aphorise@gmail.com>

--- ./ffmpeg/libavcodec/x86/mathops.h	2022-02-27 16:52:31.000000000 +0100
+++ ./ffmpeg/libavcodec/x86/mathops.h.new	2024-04-15 20:21:35.372349371 +0200
@@ -35,12 +35,20 @@
 static av_always_inline av_const int MULL(int a, int b, unsigned shift)
 {
     int rt, dummy;
+    if (__builtin_constant_p(shift))
     __asm__ (
         "imull %3               \n\t"
         "shrdl %4, %%edx, %%eax \n\t"
         :"=a"(rt), "=d"(dummy)
-        :"a"(a), "rm"(b), "ci"((uint8_t)shift)
+        :"a"(a), "rm"(b), "i"(shift & 0x1F)
     );
+    else
+        __asm__ (
+            "imull %3               \n\t"
+            "shrdl %4, %%edx, %%eax \n\t"
+            :"=a"(rt), "=d"(dummy)
+            :"a"(a), "rm"(b), "c"((uint8_t)shift)
+        );
     return rt;
 }
 
@@ -113,19 +121,31 @@
 // avoid +32 for shift optimization (gcc should do that ...)
 #define NEG_SSR32 NEG_SSR32
 static inline  int32_t NEG_SSR32( int32_t a, int8_t s){
+    if (__builtin_constant_p(s))
     __asm__ ("sarl %1, %0\n\t"
          : "+r" (a)
-         : "ic" ((uint8_t)(-s))
+         : "i" (-s & 0x1F)
     );
+    else
+        __asm__ ("sarl %1, %0\n\t"
+               : "+r" (a)
+               : "c" ((uint8_t)(-s))
+        );
     return a;
 }
 
 #define NEG_USR32 NEG_USR32
 static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
+    if (__builtin_constant_p(s))
     __asm__ ("shrl %1, %0\n\t"
          : "+r" (a)
-         : "ic" ((uint8_t)(-s))
+         : "i" (-s & 0x1F)
     );
+    else
+        __asm__ ("shrl %1, %0\n\t"
+               : "+r" (a)
+               : "c" ((uint8_t)(-s))
+        );
     return a;
 }