Date: Fri, 25 Nov 2016 00:40:46 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: MIPS code size strangeness Message-ID: <5837261E.9040700@grosbein.net> In-Reply-To: <58371526.4050908@grosbein.net> References: <5831E800.60003@grosbein.net> <CAJ-VmokUfc2ABY1O0B7RqzfCmU_99VwnCmmHfhcRhM5NcH4Ubg@mail.gmail.com> <5832FF33.9010307@grosbein.net> <CAF19XB%2BwS%2BeCrv1mtmXLS1b7SJNZbQUD_2PFZXkhyvX-4wfeLQ@mail.gmail.com> <58330AB6.60306@grosbein.net> <CAF19XBLaZ=t_HPm079vsXvT5vBLunPib94d6=hNkzRd2xz5EPg@mail.gmail.com> <58332491.3000706@grosbein.net> <CAJ-Vmo=Zp2HFLcd5293G-9odo-8r=qa1j=FsJoD-jxMiMJXKAQ@mail.gmail.com> <58332940.8030606@grosbein.net> <CAJ-VmokTECO2kfRKsBiESCCygfM8qh_NzL4pzik8H7KL6pw6HQ@mail.gmail.com> <58346974.2020907@grosbein.net> <CAJ-VmokX_ThysU0vRxKWeAQL4JLFHh5vH6rDbtRitCpPCm=_TQ@mail.gmail.com> <58371526.4050908@grosbein.net>
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On 24.11.2016 23:28, Eugene Grosbein wrote:
> On 24.11.2016 05:11, Adrian Chadd wrote:
>> It's the mips-xtoolchain or xtoolchain-mips-gcc or something
>
> Thanks!
>
> I've changed the port devel/powerpc64-gcc (master port for devel/mips-gcc) slightly
> to build gcc-6.2.0 instead of gcc-5.3.0 and it builds and installs just fine
> using command make FREEBSD_EXTENSION=yes install
>
> Then, I've installed devel/mips-xtoolchain-gcc and run buildworld using CROSS_TOOLCHAIN=mips-gcc.
> It fails:
>
> --- cancelpoints_sem_new.o ---
> {standard input}: Assembler messages:
> {standard input}:1347: Error: opcode not supported on this processor: mips1 (mips1) `ll $5,4($4)'
> {standard input}:1350: Error: opcode not supported on this processor: mips1 (mips1) `sc $5,4($4)'
> {standard input}:1360: Error: opcode not supported on this processor: mips1 (mips1) `sync'
> {standard input}:1456: Error: opcode not supported on this processor: mips1 (mips1) `ll $4,0($17)'
> {standard input}:1459: Error: opcode not supported on this processor: mips1 (mips1) `sc $4,0($17)'
> {standard input}:1469: Error: opcode not supported on this processor: mips1 (mips1) `sync'
> {standard input}:1697: Error: opcode not supported on this processor: mips1 (mips1) `sync'
> {standard input}:1702: Error: opcode not supported on this processor: mips1 (mips1) `ll $5,4($4)'
> {standard input}:1705: Error: opcode not supported on this processor: mips1 (mips1) `sc $5,4($4)'
> *** [cancelpoints_sem_new.o] Error code 1
>
> I try to build code for TP-Link WDR3600.
> I'm not familiar with MIPS assembler. Is there a way to alter gcc6 code generator to avoid this error?
I've managed to build FreeBSD12/mips using gcc6 and additional src.conf knobs:
CROSS_TOOLCHAIN=mips-gcc
WITHOUT_CROSS_COMPILER=yes
CROSSENV+=CFLAGS="-march=mips32"
This time, ucl_hash_replace() function takes 628 bytes (0x274) instead of 25000:
# nm -C -D --print-size --size-sort libprivateucl.so.1 | grep ucl_hash_replace
0003098c 00000274 T ucl_hash_replace
However, libprivateucl.so.1 still takes 247224 bytes in case of FreeBSD12/mips
comparing with 136064 bytes in case of FreeBSD11/amd64.
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