Richard Sandiford via Gcc-patches <gcc-patches@gcc.gnu.org>
于2021年9月1日周三 下午4:55写道：
>
> apinski--- via Gcc-patches <gcc-patches@gcc.gnu.org> writes:
> > From: Andrew Pinski <apin...@marvell.com>
> >
> > This adds MIPS Linux support to gcc.misc-tests/linkage.exp. Basically
> > copying what was done for MIPS IRIX and changing the options to be correct.
> >
> > OK?
> >
> > gcc/testsuite/ChangeLog:
> >
> > PR testsuite/51748
> > * gcc.misc-tests/linkage.exp: Add mips*-linux-* support.
>
> OK, thanks. Searching for any match for 64 seems surprisingly general,
> but it's what other cases do and has obviously stood the test of time.
>
syq@XX:~$ gcc -mips64r2 -mabi=64 -c zz.c && file zz.o
zz.o: ELF 64-bit LSB relocatable, MIPS, MIPS64 rel2 version 1 (SYSV),
not stripped
syq@XX:~$ gcc -mips64r2 -mabi=32 -c zz.c && file zz.o
zz.o: ELF 32-bit LSB relocatable, MIPS, MIPS64 rel2 version 1 (SYSV),
not stripped
syq@XX:~$ gcc -mips64r2 -mabi=n32 -c zz.c && file zz.o
zz.o: ELF 32-bit LSB relocatable, MIPS, N32 MIPS64 rel2 version 1
(SYSV), not stripped
In the first glance, I also thought the code is wrong. While with some
check, it does work.
> Richard
>
> > ---
> > gcc/testsuite/gcc.misc-tests/linkage.exp | 12 ++++++++++++
> > 1 file changed, 12 insertions(+)
> >
> > diff --git a/gcc/testsuite/gcc.misc-tests/linkage.exp
> > b/gcc/testsuite/gcc.misc-tests/linkage.exp
> > index afed2b811c9..2cb109e776e 100644
> > --- a/gcc/testsuite/gcc.misc-tests/linkage.exp
> > +++ b/gcc/testsuite/gcc.misc-tests/linkage.exp
> > @@ -38,6 +38,18 @@ if { [isnative] && ![is_remote host] } then {
> >
> > # Need to ensure ABI for native compiler matches gcc
> > set native_cflags ""
> > + if [istarget "mips*-linux*"] {
> > + set file_string [exec file "linkage-x.o"]
> > + if [ string match "*64*" $file_string ] {
> > + set native_cflags "-mabi=64"
> > + }
> > + if [ string match "*ELF 32*" $file_string ] {
> > + set native_cflags "-mabi=32"
> > + }
> > + if [ string match "*N32*" $file_string ] {
> > + set native_cflags "-mabi=n32"
> > + }
> > + }
> > if [istarget "sparc*-sun-solaris2*"] {
> > set file_string [exec file "linkage-x.o"]
> > if [ string match "*64*" $file_string ] {
