Re: gdbserver optimizer build failure

[Stan Shebs <stan@codesourcery.com>]

Pierre Muller wrote:
>   
>   gdbserver build currently
> fails on gcc16 (x86-64 machine running linux).
>   

This is presumably the same problem as Doug reported a couple days ago:

http://sourceware.org/ml/gdb-patches/2010-06/msg00370.html

It doesn't happen to me, probably because it only kicks in on particular 
compiler / binutils combos.  But could you please try Ian's suggested 
macro in http://sourceware.org/ml/gdb-patches/2010-06/msg00379.html ?  
It looks like it would do the right thing.

Stan

>
> gcc -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbserve
> r/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gdbser
> ver/../../include
> -Wl,--dynamic-list=../../../src/gdb/gdbserver/proc-service.li
> st -o gdbserver inferiors.o regcache.o remote-utils.o server.o signals.o
> target.
> o utils.o version.o mem-break.o hostio.o event-loop.o tracepoint.o
> xml-builtin.o
>  amd64-linux.o amd64-avx-linux.o i386-linux.o i386-avx-linux.o
> i386-mmx-linux.o
> linux-low.o linux-x86-low.o i386-low.o i387-fp.o hostio-errno.o thread-db.o
> proc
> -service.o  \
>           -ldl
> linux-x86-low.o: In function `i386_emit_void_call_2':
> /home/muller/gdb/build-norm/gdb/gdbserver/../../../src/gdb/gdbserver/linux-x
> 86-low.c:2426: undefined reference to `start_i386_void_call_2_a'
> /home/muller/gdb/build-norm/gdb/gdbserver/../../../src/gdb/gdbserver/linux-x
> 86-low.c:2426: undefined reference to `end_i386_void_call_2_a'
> /home/muller/gdb/build-norm/gdb/gdbserver/../../../src/gdb/gdbserver/linux-x
> 86-l
>
> And so on...
>
> If I do:
> prompt$ rm linux-x86-low.o
> prompt$ make CFLAGS="-g  --save-temps" linux-x86-low.o
> gcc -c -Wall -g  --save-temps    -I. -I../../../src/gdb/gdbserver
> -I../../../src
> /gdb/gdbserver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../s
> rc/gdb/gdbserver/../../include ../../../src/gdb/gdbserver/linux-x86-low.c
> prompt$ make
> rm -f gdbserver
> gcc -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbserve
> r/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gdbser
> ver/../../include
> -Wl,--dynamic-list=../../../src/gdb/gdbserver/proc-service.li
> st -o gdbserver inferiors.o regcache.o remote-utils.o server.o signals.o
> target.
> o utils.o version.o mem-break.o hostio.o event-loop.o tracepoint.o
> xml-builtin.o
>  amd64-linux.o amd64-avx-linux.o i386-linux.o i386-avx-linux.o
> i386-mmx-linux.o
> linux-low.o linux-x86-low.o i386-low.o i387-fp.o hostio-errno.o thread-db.o
> proc
> -service.o  \
>           -ldl
> gcc -c -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbse
> rver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gdb
> server/../../include ../../../src/gdb/gdbserver/gdbreplay.c
> rm -f gdbreplay
> gcc -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbserve
> r/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gdbser
> ver/../../include
> -Wl,--dynamic-list=../../../src/gdb/gdbserver/proc-service.li
> st -o gdbreplay gdbreplay.o version.o \
>
> gcc -c  -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbs
> erver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gd
> bserver/../../include -fPIC -DGDBSERVER -DIN_PROCESS_AGENT
> -fvisibility=hidden .
> ./../../src/gdb/gdbserver/tracepoint.c -o tracepoint-ipa.o
> gcc -c  -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbs
> erver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gd
> bserver/../../include -fPIC -DGDBSERVER -DIN_PROCESS_AGENT
> -fvisibility=hidden .
> ./../../src/gdb/gdbserver/utils.c -o utils-ipa.o
> gcc -c  -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbs
> erver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gd
> bserver/../../include -fPIC -DGDBSERVER -DIN_PROCESS_AGENT
> -fvisibility=hidden .
> ./../../src/gdb/gdbserver/regcache.c -o regcache-ipa.o
> gcc -c  -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbs
> erver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gd
> bserver/../../include -fPIC -DGDBSERVER -DIN_PROCESS_AGENT
> -fvisibility=hidden a
> md64-linux.c -o amd64-linux-ipa.o
> gcc -c  -Wall -g -O2    -I. -I../../../src/gdb/gdbserver
> -I../../../src/gdb/gdbs
> erver/../common -I../../../src/gdb/gdbserver/../regformats
> -I../../../src/gdb/gd
> bserver/../../include -fPIC -DGDBSERVER -DIN_PROCESS_AGENT
> -fvisibility=hidden .
> ./../../src/gdb/gdbserver/linux-amd64-ipa.c -o linux-amd64-ipa.o
> rm -f libinproctrace.so
> gcc -shared -fPIC -Wl,--no-undefined -Wall -g -O2    -I.
> -I../../../src/gdb/gdbs
> erver -I../../../src/gdb/gdbserver/../common
> -I../../../src/gdb/gdbserver/../reg
> formats -I../../../src/gdb/gdbserver/../../include \
>          -Wl,--dynamic-list=../../../src/gdb/gdbserver/proc-service.list -o
> libi
> nproctrace.so tracepoint-ipa.o utils-ipa.o regcache-ipa.o amd64-linux-ipa.o
> linu
> x-amd64-ipa.o
>
>
> The build completes successfully!
>
>
>   It seems that there is a problem with the macro EMIT_ASM
> which seems to be mistreated by the optimizer.
>
>   I have no clue how to solve this...
>
> Pierre Muller
> Pascal language support maintainer for GDB
>
>
>
>