On Fri, Jul 22, 2005 at 07:55:05AM -0700, Matt Kraai wrote: > Package: ffmpeg > Version: 0.cvs20050626-2 > Severity: serious > > ffmpeg fails to build because it clobbers the PIC register %ebx in > an asm:
I've a patch that fixes this problem, but compile doesn't succeed afterwords. The %ebx clobber can be safely deleted there, since ebx is not clobbered at all. It's saved on the stack in the beginning and restored later. However I get a compile error later, and that leaves me puzzled. For me it smells like a gcc problem: i386/h264dsp_mmx.c: In function ‘h264_h_loop_filter_luma_mmx2’: i386/dsputil_mmx.c:618: error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’ i386/dsputil_mmx.c:618: error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’ The reason I can't see a solution for that problem is that I don't see a problem. That asm statement doesn't even request registers, only memory operands... If noone else has an idea how to fix this, it could probably be cloned to gcc-4.0? Cheers, Christian Aichinger
Binary files ffmpeg-0.cvs20050626/libavcodec/i386/cputest.o and
ffmpeg/libavcodec/i386/cputest.o differ
Binary files ffmpeg-0.cvs20050626/libavcodec/i386/fdct_mmx.o and
ffmpeg/libavcodec/i386/fdct_mmx.o differ
Binary files ffmpeg-0.cvs20050626/libavcodec/libpostproc/postprocess.o and
ffmpeg/libavcodec/libpostproc/postprocess.o differ
diff -Nur ffmpeg-0.cvs20050626/libavcodec/libpostproc/postprocess_template.c
ffmpeg/libavcodec/libpostproc/postprocess_template.c
--- ffmpeg-0.cvs20050626/libavcodec/libpostproc/postprocess_template.c
2005-08-07 09:54:10.000000000 +0200
+++ ffmpeg/libavcodec/libpostproc/postprocess_template.c 2005-08-07
10:26:47.000000000 +0200
@@ -3289,7 +3289,6 @@
"r" ((long)srcStride),
"r" ((long)dstStride)
#if defined(PIC) && !defined(ARCH_X86_64)
- : "%"REG_b
#else
: "%"REG_d
#endif
@@ -3343,7 +3342,7 @@
"r" ((long)srcStride),
"r" ((long)dstStride)
#if defined(PIC) && !defined(ARCH_X86_64)
- : "%"REG_a, "%"REG_b
+ : "%"REG_a
#else
: "%"REG_a, "%"REG_d
#endif
Binary files ffmpeg-0.cvs20050626/libavcodec/oggvorbis.o and
ffmpeg/libavcodec/oggvorbis.o differ
signature.asc
Description: Digital signature
