[ELF,test] Improve weak-undef-rw.s

Author: MaskRay

lld/test/ELF/weak-undef-rw.s

@@ -3,12 +3,17 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64 b.s -o b.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64 c.s -o c.o
-# RUN: ld.lld a.o -o nopie --export-dynamic
-# RUN: llvm-readelf -r --hex-dump=.data nopie | FileCheck %s --check-prefix=STATIC
-# RUN: ld.lld a.o -o out.pie -pie
-# RUN: llvm-readelf -r --hex-dump=.data out.pie | FileCheck %s --check-prefix=STATIC
-# RUN: ld.lld a.o -o out.so -shared
-# RUN: llvm-readobj -r out.so | FileCheck %s --check-prefix=PIC
+# RUN: llvm-mc -filetype=obj -triple=x86_64 %S/Inputs/shared.s -o s.o
+# RUN: ld.lld -shared s.o -o s.so
+
+# RUN: ld.lld a.o -o a --export-dynamic
+# RUN: llvm-readelf -r --hex-dump=.data a | FileCheck %s --check-prefix=STATIC
+# RUN: ld.lld a.o s.so -o as
+# RUN: llvm-readelf -r --hex-dump=.data as | FileCheck %s --check-prefix=STATIC
+# RUN: ld.lld a.o -o a.pie -pie
+# RUN: llvm-readelf -r --hex-dump=.data a.pie | FileCheck %s --check-prefix=STATIC
+# RUN: ld.lld a.o -o a.so -shared
+# RUN: llvm-readelf -r a.so | FileCheck %s --check-prefix=DYN
 
 ## gABI leaves the behavior of weak undefined references implementation defined.
 ## We choose to resolve them statically for static linking and produce dynamic relocations
@@ -19,35 +24,44 @@
 
 # STATIC:      no relocations
 # STATIC:      Hex dump of section '.data':
-# STATIC-NEXT: {{.*}} 00000000 00000000 .
+# STATIC-NEXT: {{.*}} 00000000 00000000 03000000 00000000 .
 # STATIC-EMPTY:
 
-# PIC:      .rela.dyn {
-# PIC-NEXT:   R_X86_64_64 foobar 0x0
-# PIC-NEXT: }
+# DYN:        Relocation section '.rela.dyn' {{.*}} contains 2
+# DYN:        R_X86_64_64 0000000000000000 foobar + 0{{$}}
 
-# RUN: ld.lld a.o b.o -o out1 -z undefs
-# RUN: llvm-readelf -r -x .data out1 | FileCheck %s --check-prefix=STATIC1
-# RUN: ld.lld a.o b.o -o out1.pie -pie -z undefs
-# RUN: llvm-readelf -r -x .data out1.pie | FileCheck %s --check-prefix=STATIC1
+# RUN: ld.lld a.o b.o -o ab -z undefs
+# RUN: llvm-readelf -r -x .data ab | FileCheck %s --check-prefix=STATIC1
+# RUN: ld.lld a.o b.o s.so -o abs -z undefs
+# RUN: llvm-readelf -r -x .data abs | FileCheck %s --check-prefix=DYN1
+# RUN: ld.lld a.o b.o -o abs.pie -pie -z undefs
+# RUN: llvm-readelf -r -x .data abs.pie | FileCheck %s --check-prefix=STATIC1
 
 # STATIC1:      no relocations
 # STATIC1:      Hex dump of section '.data':
-# STATIC1-NEXT: {{.*}} 00000000 00000000 00000000 00000000 .
+# STATIC1-NEXT: {{.*}} 00000000 00000000 03000000 00000000 .
+# STATIC1-NEXT: {{.*}} 05000000 00000000                   .
 # STATIC1-EMPTY:
 
+# DYN1:        Relocation section '.rela.dyn' {{.*}} contains 1
+# DYN1:        Hex dump of section '.data':
+# DYN1-NEXT:   {{.*}} 00000000 00000000 03000000 00000000 .
+# DYN1-NEXT:   {{.*}} 00000000 00000000                   .
+# DYN1-EMPTY:
+
 # RUN: ld.lld a.o b.o c.o -pie -z undefs 2>&1 | count 0
 
 #--- a.s
-        .global _start
+.global _start
 _start:
-        .data
-        .weak foobar
-        .quad foobar
+.data
+.weak foobar
+.quad foobar
+.quad foobar+3
 
 #--- b.s
 .data
-.quad undef
+.quad undef+5
 
 #--- c.s
 call undef