> As mpg123 upstream it would be cool to get note of such issues without > having to look for them in the debian bts. Having some bot subscribe > and post to mpg123-de...@lists.sourceforge.net would be splendit; but if > that is too troublesome, sending an info to maintai...@mpg123.org would > be just as fine (using the generic address in case I vanish in future). > But perhaps I overlooked a generic way to subscribe an address to all > future reports.
Hello: I have not tried it myself but I think this is what you are asking for: http://www.debian.org/doc/manuals/developers-reference/resources.html#pkg-tracking-system Section 4.10.1 explains the subscribe and the keyword options. I would filter out some of them since it would be too verbose IMO. > Second: There is no inline assembly in mpg123. The file at hand > (layer3.c) is plain C all around. So, without further data, I must > assume that this is a bug in gcc that is worked around by adding -marm. > You might consider asking gcc folks about this. I had some free time so I looked into this. The armhf architecture defaults to -mthumb instead of -marm and: 1) --with-cpu=arm_nofpu it fails with -mthumb and works with -marm (-DOPT_ARM -DREAL_IS_FIXED) 2) --with-cpu=neon it works with both. (-DOPT_NEON -DREAL_IS_FLOAT) This lead me to believe that it was most likely related to -DOPT_ARM. I saw that layer3.c includes "#include "mpg123lib_intern.h" and that in that file there is a block: # elif defined(OPT_ARM) /* for arm */ # define REAL_MUL_ASM(x, y, radix) \ <snip> I patched this file by basically doing -# elif defined(OPT_ARM) +# elif defined(OxxxxxPT_ARxxxxxM) Without the patch it FTBFS but with the patch it builds. Looking at the ASM code it seems that these 2 asm block use PRE-UAL ARM syntax which only work in ARM and not thumb. The newer UAL syntax works with both. Here is a link that mentions some of the changes: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204j/Cjagjjbc.html Attached is a patch to really fix this and the orr problem with a header inside the patch explaining the changes. Using -marm was really a workaround to hide the problem but not a real solution to this and disabled all the advantages of using -mthumb. Reference for thumb2 instructions: http://infocenter.arm.com/help/topic/com.arm.doc.qrc0001m/QRC0001_UAL.pdf Hope this helps, Miguel
0005-thumbs2.patch
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