i386: Issue an error on non-PIC call to IFUNC in PIC object

On i386, IFUNC function must be called via PLT.  Since PLT in PIC
object uses EBX register, R_386_PLT32 relocation must be used to
call IFUNC function even when IFUNC function is defined locally.
Linker should issue an error when R_386_PC32 relocation is used
to call IFUNC function.

Since PR ld/19784 tests doesn't use PLT relocation to local IFUNC
function, they are moved to the x86-64 test directory.

bfd/

	PR ld/14961
	PR ld/20515
	* elf32-i386.c (elf_i386_check_relocs): Issue an error when
	R_386_PC32 relocation is used to call IFUNC function in PIC
	object.

ld/

	PR ld/14961
	PR ld/20515
	* testsuite/ld-i386/i386.exp: Run pr20515.
	* testsuite/ld-i386/pr20515.d: New file.
	* testsuite/ld-i386/pr20515.s: Likewise.
	* testsuite/ld-ifunc/ifunc-14a.s: Use R_386_PLT32 to call IFUNC
	function.
	* testsuite/ld-ifunc/ifunc-14c.s: Likewise.
	* testsuite/ld-ifunc/ifunc-2-i386.s: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-i386.s: Likewise.
	* testsuite/ld-ifunc/ifunc.exp: Move PR ld/19784 tests to ...
	* testsuite/ld-x86-64/x86-64.exp: Here.
	* testsuite/ld-ifunc/pr19784a.c: Moved to ...
	* testsuite/ld-x86-64/pr19784a.c: Here.
	* testsuite/ld-ifunc/pr19784b.c: Moved to ...
	* testsuite/ld-x86-64/pr19784b.c: Here.
	* testsuite/ld-ifunc/pr19784c.c: Moved to ...
	* testsuite/ld-x86-64/pr19784c.c: Here.

1 files changed, 0 insertions, 40 deletions

diff --git a/ld/testsuite/ld-ifunc/ifunc.exp b/ld/testsuite/ld-ifunc/ifunc.exp
index c3c9379..504007a 100644
--- a/ld/testsuite/ld-ifunc/ifunc.exp
+++ b/ld/testsuite/ld-ifunc/ifunc.exp
@@ -505,30 +505,6 @@ run_cc_link_tests [list \
 	{} \
 	"libpr18841c.so" \
     ] \
-    [list \
-	"Build libpr19784a.so" \
-	"-shared -Wl,-Bsymbolic-functions" \
-	"-fPIC -O2 -g" \
-	{ pr19784b.c pr19784c.c } \
-	{} \
-	"libpr19784a.so" \
-    ] \
-    [list \
-	"Build libpr19784b.so" \
-	"-shared -Wl,-Bsymbolic-functions" \
-	"-fPIC -O2 -g" \
-	{ pr19784c.c pr19784b.c } \
-	{} \
-	"libpr19784b.so" \
-    ] \
-    [list \
-	"Build pr19784a.o" \
-	"" \
-	"" \
-	{ pr19784a.c } \
-	"" \
-	"" \
-    ] \
 ]
 
 run_ld_link_exec_tests [list \
@@ -556,20 +532,4 @@ run_ld_link_exec_tests [list \
 	"pr18841c" \
 	"pr18841.out" \
     ] \
-    [list \
-	"Run pr19784a" \
-	"tmpdir/pr19784a.o tmpdir/libpr19784a.so" \
-	"" \
-	{ dummy.c } \
-	"pr19784a" \
-	"pass.out" \
-    ] \
-    [list \
-	"Run pr19784b" \
-	"--as-needed tmpdir/pr19784a.o tmpdir/libpr19784b.so" \
-	"" \
-	{ dummy.c } \
-	"pr19784b" \
-	"pass.out" \
-    ] \
 ]