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package/ffmpeg: fix build with binutils >= 2.41 

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
master
Bernd Kuhls 2023-08-01 22:21:37 +02:00 committed by Thomas Petazzoni
parent 9e69a62fe0
commit e039a7dfe5
1 changed files with 84 additions and 0 deletions
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84
package/ffmpeg/0005-Fixes-assembling-with-binutils-as-2.41.patch 100644
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@ -0,0 +1,84 @@
From effadce6c756247ea8bae32dc13bb3e6f464f0eb Mon Sep 17 00:00:00 2001
From: =?utf8?q?R=C3=A9mi=20Denis-Courmont?= <remi@remlab.net>
Date: Sun, 16 Jul 2023 18:18:02 +0300
Subject: [PATCH] avcodec/x86/mathops: clip constants used with shift
instructions within inline assembly
Fixes assembling with binutils as >= 2.41
Upstream: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=effadce6c756247ea8bae32dc13bb3e6f464f0eb
Bug reports for this change in binutils:
https://fftrac-bg.ffmpeg.org/ticket/10405
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108941
https://sourceware.org/bugzilla/show_bug.cgi?id=30578
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
libavcodec/x86/mathops.h | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/libavcodec/x86/mathops.h b/libavcodec/x86/mathops.h
index 6298f5ed19..ca7e2dffc1 100644
--- a/libavcodec/x86/mathops.h
+++ b/libavcodec/x86/mathops.h
@@ -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 @@ __asm__ volatile(\
// 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;
}
--
2.30.2