error: invalid operand in inline asm: 'adds $1, ${2:R}, ${2:Q}, lsr #31

[hsleedevelop]

CC libavcodec/audioconvert.o error: invalid operand in inline asm: 'adds $1, ${2:R}, ${2:Q}, lsr #31
mvnne $1, #1<<31
eorne $0, $1, ${2:R}, asr #31
' make: *** [libavcodec/audioconvert.o] Error 1

iOS5 sdk, LION-10.7.2

[hsleedevelop]

using LLVM-GCC4.2 compiler,,

[wobbals]

For those who came here via google: http://stackoverflow.com/questions/7874667/trying-to-compile-last-ffmpeg-iphone-error-invalid-operand-in-inline-asm

[shengbinmeng]

I now have exactly the same problem! evercry, have you figured it out? I'll appreciate it if you share your solution. I googled, but found no answer.

[wobbals]

Edwin- have you tried disabling asm support when configuring ffmpeg? This was sufficient to solve the issue for me, and the ffmpeg libraries still work fine without it.

[shengbinmeng]

Thank you, wobbles, disabling asm does work fine. But I should mention that I want to use NEON optimization of ffmpeg, so if disable-asm, the neon support is not possible.

[ghost]

Hi Edwin, any luck with this issue ?

I have also the same problem with Lion and iOS 5.0.

Looking for fix ....

[shengbinmeng]

Well, just for a quick work, I did this:

1. find the error source, that is "av_clipl_int32_arm" in libavutil/arm/intmath.h;
2. avoid it. (I simply comment out "#define av_clipl_int32 av_clipl_int32_arm", so don't use NEON for just that one function)

Hope to know a more professional fix :-)

[ghost]

Hi Edwin,

Thanks for the fix. That error gone away but unfortunately, I got another error,

libavformat/asfcrypt.o error: invalid operand in inline asm: 'ldr ${0:Q}, $1
ldr ${0:R}, $2

What is the ffmpeg version you are using ?

Thanks

[shengbinmeng]

I am using kind of old version - 0.6.1, and have disabled a lot of encoders/decoders (in my application).

Anyway, what I did is only "扬汤止沸", we may all need a better fix.

[ghost]

Yes, we may need a proper fix.

If you don't mind, can I have the ffmpeg configure command options that you are using at terminal ?

I also don't want a lot of encoders and decoders.

Thanks,

[shengbinmeng]

It should be all right. myconfig.sh:

#!/bin/bash

./configure
--disable-doc
--disable-ffmpeg
--disable-ffplay
--disable-ffprobe
--disable-ffserver
--disable-avdevice
--disable-avfilter

--disable-everything
--enable-decoder=h264
--enable-decoder=mp3
--enable-decoder=mp2
--enable-decoder=mpegaudio
--enable-parser=h264
--enable-parser=mpegaudio
--enable-demuxer=h264
--enable-demuxer=rtsp
--enable-demuxer=rtp
--enable-protocol=rtsp
--enable-protocol=rtp
--enable-protocol=udp
--enable-protocol=tcp

--enable-cross-compile
--arch=arm
--target-os=darwin
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc
--as="gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc"
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk
--extra-cflags="-w -arch armv7 -mfpu=neon "
--extra-ldflags="-arch armv7 -mfpu=neon -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk"
--enable-pic \

[ghost]

Thanks A lot :)

[ghost]

Hi Edwin,

Have you built librtmp with ffmpeg and arm ?

I am having trouble with building ffmpeg with librtmp :(

I am always getting "librtmp" not found. I set the PKG_PATH to point librtmp.c but no luck.

any Idea ?

Thanks

[shengbinmeng]

No, I know little about using librtmp. I googled and it seems some one has the similar problem with you. you can go do more searching.

Good luck!

[lu-zero]

a workaround landed libav already http://git.libav.org/?p=libav.git;a=commit;h=f7de52354fe15ba7cae141b44ffdd01e560f0e47

[ciphor]

I met this problem too.

[davidcairns]

So… any update on a fix for this?

[ciphor]

This error is due to that current version of gnu assembler does not support 64bit instructions. My suggestion is to replace those 64bit assembly functions to 32bit.

2012/2/17 David Cairns < [email protected]

So any update on a fix for this?

---

Reply to this email directly or view it on GitHub: https://github.com/yuvi/gas-preprocessor/issues/16#issuecomment-4013152

[zebeurton]

I had also this issue. How can we replace 64 bit assembly functions to 32bit ones?

[IronSight87]

Is there meanwhile a solution for that problem?

[wobbals]

Yes; turn the optimizations off for your target architecture. ffmpeg runs just fine without them.

[IronSight87]

But this will slow down the performance. Other solutions?

[zebeurton]

I confirm it slown down performances. Impossible to decode correctly a 1080p video encoded in H264 on a iPad 2... It runs at two or three frame by seconds.

Any solution?

[wobbals]

If you feel you must have optimizations turned on, simply disable the defines for all 64-bit inline assembly declarations, as per the instructions I linked early in the thread. Here's a diff to get you started:

danger:FFmpeg charley$ git diff
diff --git a/libavutil/arm/intmath.h b/libavutil/arm/intmath.h
index 52af66e..219e18f 100644
--- a/libavutil/arm/intmath.h
+++ b/libavutil/arm/intmath.h
@@ -97,7 +97,7 @@ static av_always_inline av_const int FASTDIV(int a, int b)

 #endif /* HAVE_ARMV6 */

-#define av_clipl_int32 av_clipl_int32_arm
+//#define av_clipl_int32 av_clipl_int32_arm
 static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a)
 {
     int x, y;
diff --git a/libavutil/arm/intreadwrite.h b/libavutil/arm/intreadwrite.h
index 0292aab..3e19cf3 100644
--- a/libavutil/arm/intreadwrite.h
+++ b/libavutil/arm/intreadwrite.h
@@ -52,7 +52,7 @@ static av_always_inline void AV_WN32(void *p, uint32_t v)
     __asm__ ("str  %1, %0" : "=m"(*(uint32_t *)p) : "r"(v));
 }

-#define AV_RN64 AV_RN64
+//#define AV_RN64 AV_RN64
 static av_always_inline uint64_t AV_RN64(const void *p)
 {
     uint64_t v;
@@ -63,7 +63,7 @@ static av_always_inline uint64_t AV_RN64(const void *p)
     return v;
 }

-#define AV_WN64 AV_WN64
+//#define AV_WN64 AV_WN64
 static av_always_inline void AV_WN64(void *p, uint64_t v)
 {
     __asm__ ("str  %Q2, %0  \n\t"

[IronSight87]

Does anybody found a better fix? Disable the defines, will also disable neon optimizations! I tried configure with llvm-gcc, but ended with the same result.

[mansr]

This has been fixed in Libav. http://git.libav.org/?p=libav.git;a=commitdiff;h=ec9d2c15c17ada4ebb5c8ca335a71a1f330dcaf9

[IronSight87]

Thanks mansr! Works like a charm.

[germangda]

It seems that another issue happens after applying libav fix :S I'm using this configuration

./configure --extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/usr/lib/system --disable-bzlib --disable-doc --enable-cross-compile --arch=arm --target-os=darwin --cc='/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -arch armv7' --as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk --cpu=cortex-a8 --extra-cflags='-arch armv7' --extra-ldflags='-arch armv7' --enable-pic --disable-zlib --disable-bzlib --enable-decoder=h264 --enable-demuxer=h264 --enable-parser=h264

Already did the Libavcodec fixes (thanks mansr) but still shows me this error (copy/paste of the last lines in console) CC libavcodec/arm/aacpsdsp_init_arm.o AS libavcodec/arm/aacpsdsp_neon.o AS libavcodec/arm/ac3dsp_arm.o AS libavcodec/arm/ac3dsp_armv6.o ./libavutil/arm/asm.S:178:garbage following instruction -- ldr r4,.Lpicoff\' ./libavutil/arm/asm.S:179:Unknown pseudo-op: .Lpic ./libavutil/arm/asm.S:179:Rest of line ignored. 1st junk character valued 92 (\). ./libavutil/arm/asm.S:181:Unknown pseudo-op: .altmacro ./libavutil/arm/asm.S:182:Unknown pseudo-op: .noaltmacro ./libavutil/arm/asm.S:185:Unknown pseudo-op: .Lpic ./libavutil/arm/asm.S:185:Rest of line ignored. 1st junk character valued 92 (\). ./libavutil/arm/asm.S:178:garbage following instruction --ldr lr,.Lpicoff' ./libavutil/arm/asm.S:179:Unknown pseudo-op: .Lpic ./libavutil/arm/asm.S:179:Rest of line ignored. 1st junk character valued 92 (). ./libavutil/arm/asm.S:181:Unknown pseudo-op: .altmacro ./libavutil/arm/asm.S:182:Unknown pseudo-op: .noaltmacro ./libavutil/arm/asm.S:185:Unknown pseudo-op: .Lpic ./libavutil/arm/asm.S:185:Rest of line ignored. 1st junk character valued 92 (). make: *** [libavcodec/arm/ac3dsp_armv6.o] Error 1

I can only make it using --disable-asm flag, do you have any guess what could happen with this error?

[IronSight87]

Use the following gas-preprocessor and it will work: https://github.com/xbmc/xbmc/tree/master/tools/darwin/depends/gas-preprocessor

[germangda]

Woooo! It works! Thanks man!