[gcc r12-3301] Add MIPS Linux support to gcc.misc-tests/linkage.c (testsuite/51748)

[Andrew Pinski <pinskia@gcc.gnu.org>]

https://gcc.gnu.org/g:852fdc23a20d07087b5908b57ae7725f435732d5

commit r12-3301-g852fdc23a20d07087b5908b57ae7725f435732d5
Author: Andrew Pinski <apinski@marvell.com>
Date:   Wed Sep 1 00:13:51 2021 +0000

    Add MIPS Linux support to gcc.misc-tests/linkage.c (testsuite/51748)
    
    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.

Diff:
---
 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 ] {