RFR: 8207057: No debug info for assembler files

[Severin Gehwolf]

Hi Erik,

Thanks for the review!

On Thu, 2018-07-12 at 09:47 -0700, Erik Joelsson wrote:
> Hello Severin,
> From looking at your jdk-submit job I can already say that it's not working on Solaris:
> jib > /bin/as: error: unknown option 'g0'
> jib > /bin/as: error: unknown option 'xs'
> jib > usage: /bin/as [-V] [-Q{y,n}] [-s]
> jib > 	[-S{a|b|c|l|A|B|C|L}] [-hwcap={1|0}] [-o objfile] [-L]
> jib > 	[-P [[-Yc,path] [-Ipath] [-Dname] [-Dname=def] [-Uname]]...]
> jib > 	[-m [-Ym,path]] [-n] [-ul] [-xF]
> jib > 	[-m32] [-m64]
> jib > 	[-xarch={sparc,sparcvis,sparcvis2,sparcvis3,sparc4,sparc5,sparcfmaf,sparcima,sparcace,sparcaceplus}]
> jib > file.s...

OK. Not too surprising. Would you happen to know what those magic flags
for solaris should be?

> I think we need to introduce a separate ASFLAGS_DEBUG_SYMBOLS variable for this to work. 

I'll work on that then.

Thanks,
Severin

> /Erik
> 
> On 2018-07-12 08:17, Severin Gehwolf wrote:
> > Hi,
> > 
> > Could I please get a review of this build fix? The problem is that no
> > debug info gets ever generated for assembler files in hotspot. The
> > proposed fix is to generated debug info via CFLAGS_DEBUG_SYMBOLS if so
> > requested. For example --with-native-debug-info=none no debug info is
> > generated. --with-native-debug-info=internal generates it. The question
> > is whether the assembler will accept the same debug-info related flags
> > as the compiler on all supported platforms (CFLAGS_DEBUG_SYMBOLS).
> > Thoughts?
> > 
> > Bug: https://bugs.openjdk.java.net/browse/JDK-8207057
> > webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8207057/webrev.01/
> > 
> > Testing:
> > - I've manually verified via gdb that relevant debug info is present.
> > - Currently running this through jdk-submit
> > 
> > Thanks,
> > Severin
> > 
> > PS:
> > 
> > --with-native-debug-info=internal
> > 
> > $ grep -in linux_x86_64.s build/linux-x86_64-normal-server-release/build.log 
> > 3549:SetupCompileNativeFile BUILD_LIBJVM_linux_x86_64.s  
> > 3550: [2] FILE := /disk/openjdk/upstream-sources/openjdk-head/src/hotspot/os_cpu/linux_x86/linux_x86_64.s  
> > 15605:Compiling linux_x86_64.s (for libjvm.so)
> > 15607:( /usr/bin/gcc -c -m64 -g -o /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o /disk/openjdk/upstream-sources/openjdk-head/src/hotspot/os_cpu/linux_x86/linux_x86_64.s > >(/usr/bin/tee /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log) 2> >(/usr/bin/tee /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log >&2) || ( exitcode=$? && /usr/bin/cp /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_linux_x86_64.o.log && /usr/bin/cp /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.cmdline /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_linux_x86_64.o.cmdline && exit $exitcode ) )
> > 
> > Note: -g switch is present.
> > 
> > --with-native-debug-info=none
> > 
> > $ grep -in linux_x86_64.s build/linux-x86_64-normal-server-release/build.log 
> > 3549:SetupCompileNativeFile BUILD_LIBJVM_linux_x86_64.s  
> > 3550: [2] FILE := /disk/openjdk/upstream-sources/openjdk-head/src/hotspot/os_cpu/linux_x86/linux_x86_64.s  
> > 12499:Compiling linux_x86_64.s (for libjvm.so)
> > 12653:( /usr/bin/gcc -c -m64 -o /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o /disk/openjdk/upstream-sources/openjdk-head/src/hotspot/os_cpu/linux_x86/linux_x86_64.s > >(/usr/bin/tee /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log) 2> >(/usr/bin/tee /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log >&2) || ( exitcode=$? && /usr/bin/cp /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.log /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_linux_x86_64.o.log && /usr/bin/cp /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/objs/linux_x86_64.o.cmdline /disk/openjdk/upstream-sources/openjdk-head/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_linux_x86_64.o.cmdline && exit $exitcode ) )
> > 
> > Note: No -g switch present as expected. 
>