Need help getting NEON 64 to compile
Need help getting NEON 64 to compile
- Subject: Need help getting NEON 64 to compile
- From: David Hoerl <email@hidden>
- Date: Sun, 02 Nov 2014 17:51:59 -0500
I have an open source iOS project that depends on libjpeg-turbo, and
getting worried as that jpeg library has not been able to get their NEON
64 code to build. Historically, the NEON code that is used on other OS's
has had to be processed by the gas-preprocessor.pl asm preprocessor, to
modify to be compileable by Apple's assembler.
The 32 bit code has been working great, but its been a long haul with
the 64 bit code. A new version of the gas preprocessor appeared to solve
many problems:
https://raw.githubusercontent.com/libav/gas-preprocessor/master/gas-preprocessor.pl
However, there are still huge number of errors on the compile (6.1
official). I have reduced those down to 10 different errors - here are
the first three:
1)
.text
.balign 16
jsimd_idct_islow_neon_consts:
.short (7373)
.short (4433)
...
adr x15, jsimd_idct_islow_neon_consts
error: unqualified, assembler-local label name expected
adr x15, jsimd_idct_islow_neon_consts
^
2) Would it work to replace '-' with ',' as suggested???
error: ',' expected
st1 {v0.8b - v3.8b}, [sp], 32
^
3)
error: invalid operand for instruction
ins v16.2d[1], v17.2d[0]
^
I've uploaded 3 files to dropbox at
https://www.dropbox.com/sh/nvl9mjujy00e0qd/AADQUxI0cKs9BKs4patjh-Lma?dl=0
ERR.txt - the 10 errors
jsimd_arm64_neon.S - NEON 64 bit source
FOO64.S - gas-preprocessor.pl output from jsimd_arm64_neon.S
I don't know ARM assembler or NEON, don't plan to write any, but trying
to facilitate a solution. If I know what the syntax is suppose to be for
those 10 issues, I should be able to modify gas-preprocessor.pl (and I
don't know perl either) to perform the proper translations for these issues.
Any help or points most appreciated.
David
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