x86: Disallow invalid relocations against protected symbols

Since glibc 2.36 will issue warnings for copy relocation against
protected symbols and non-canonical reference to canonical protected
functions, change the linker to always disallow such relocations.

bfd/

	* elf32-i386.c (elf_i386_scan_relocs): Remove check for
	elf_has_indirect_extern_access.
	* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
	(elf_x86_64_relocate_section): Remove check for
	elf_has_no_copy_on_protected.
	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Check for building
	executable instead of elf_has_no_copy_on_protected.
	(_bfd_x86_elf_adjust_dynamic_symbol): Disallow copy relocation
	against non-copyable protected symbol.
	* elfxx-x86.h (SYMBOL_NO_COPYRELOC): Remove check for
	elf_has_no_copy_on_protected.

ld/

	* testsuite/ld-i386/i386.exp: Expect linker error for PR ld/17709
	test.
	* testsuite/ld-i386/pr17709.rd: Removed.
	* testsuite/ld-i386/pr17709.err: New file.
	* testsuite/ld-x86-64/pr17709.rd: Removed.
	* testsuite/ld-x86-64/pr17709.err: New file.
	* testsuite/ld-x86-64/pr28875-func.err: Updated.
	* testsuite/ld-x86-64/x86-64.exp: Expect linker error for PR
	ld/17709 test.  Add tests for function pointer against protected
	function.

7 files changed, 23 insertions, 11 deletions

diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index b4f7de4..0ab9c001 100644
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -224,7 +224,7 @@ set i386tests {
      "--32 -mx86-used-note=yes" {pr17709a.s} {} "libpr17709.so"}
     {"PR ld/17709 (2)" "-melf_i386 tmpdir/libpr17709.so" ""
      "--32 -mx86-used-note=yes"
-     {pr17709b.s} {{readelf -r pr17709.rd}} "pr17709"}
+     {pr17709b.s} {{ld "pr17709.err"}} "pr17709"}
     {"Build pr19827a.o" "" ""
      "--32 -mx86-used-note=yes" { pr19827a.S }}
     {"Build pr19827b.so" "-melf_i386 -shared" ""
diff --git a/ld/testsuite/ld-i386/pr17709.err b/ld/testsuite/ld-i386/pr17709.err
new file mode 100644
index 0000000..fa6a4ba
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr17709.err
@@ -0,0 +1,2 @@
+.*: tmpdir/pr17709b.o: copy relocation against non-copyable protected symbol `foo' in tmpdir/libpr17709.so
+#...
diff --git a/ld/testsuite/ld-i386/pr17709.rd b/ld/testsuite/ld-i386/pr17709.rd
deleted file mode 100644
index 8414784..0000000
--- a/ld/testsuite/ld-i386/pr17709.rd
+++ /dev/null
@@ -1,4 +0,0 @@
-
-Relocation section '.rel\..*' at offset .* contains 1 entry:
- Offset     Info    Type            Sym\.Value  Sym\. Name
-[0-9a-f ]+R_386_COPY +[0-9a-f]+ +foo
diff --git a/ld/testsuite/ld-x86-64/pr17709.err b/ld/testsuite/ld-x86-64/pr17709.err
new file mode 100644
index 0000000..fa6a4ba
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr17709.err
@@ -0,0 +1,2 @@
+.*: tmpdir/pr17709b.o: copy relocation against non-copyable protected symbol `foo' in tmpdir/libpr17709.so
+#...
diff --git a/ld/testsuite/ld-x86-64/pr17709.rd b/ld/testsuite/ld-x86-64/pr17709.rd
deleted file mode 100644
index beffd3c..0000000
--- a/ld/testsuite/ld-x86-64/pr17709.rd
+++ /dev/null
@@ -1,4 +0,0 @@
-
-Relocation section '.rela\..*' at offset .* contains 1 entry:
- +Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
-[0-9a-f ]+R_X86_64_COPY+[0-9a-f ]+ +foo \+ 0
diff --git a/ld/testsuite/ld-x86-64/pr28875-func.err b/ld/testsuite/ld-x86-64/pr28875-func.err
index 64e961c..f6f4658 100644
--- a/ld/testsuite/ld-x86-64/pr28875-func.err
+++ b/ld/testsuite/ld-x86-64/pr28875-func.err
@@ -1,2 +1,2 @@
-.*: tmpdir/protected-func-1b.o: non-canonical reference to canonical protected function `protected_func_1a' in tmpdir/libprotected-func-2b.so
+.*: tmpdir/protected-func-1b.o: non-canonical reference to canonical protected function `protected_func_1a' in tmpdir/libprotected-func-2..so
 #...
diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index a096c0b..e6a834a 100644
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -177,7 +177,7 @@ set x86_64tests {
     {"PR ld/17709 (1)" "-melf_x86_64 -shared" ""
      "--64" {pr17709a.s} {} "libpr17709.so"}
     {"PR ld/17709 (2)" "-melf_x86_64 tmpdir/libpr17709.so" ""
-     "--64" {pr17709b.s} {{readelf -rW pr17709.rd}} "pr17709"}
+     "--64" {pr17709b.s} {{ld "pr17709.err"}} "pr17709"}
     {"Build pr19827a.o" "" ""
      "--64" { pr19827a.S }}
     {"Build pr19827b.so" "-melf_x86_64 -shared" ""
@@ -1384,6 +1384,22 @@ if { [isnative] && [check_compiler_available] } {
 	    "protected-func-2" \
 	] \
 	[list \
+	    "Build libprotected-func-2c.so" \
+	    "-shared" \
+	    "-fPIC -Wa,-mx86-used-note=yes" \
+	    { protected-func-2c.c } \
+	    {}  \
+	    "libprotected-func-2c.so" \
+	] \
+	[list \
+	    "Build protected-func-2a without PIE" \
+	    "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/libprotected-func-2c.so" \
+	    "$NOPIE_CFLAGS -Wa,-mx86-used-note=yes" \
+	    { protected-func-1b.c } \
+	    {{error_output "pr28875-func.err"}} \
+	    "protected-func-2a" \
+	] \
+	[list \
 	    "Build libprotected-data-1a.so" \
 	    "-shared -z noindirect-extern-access" \
 	    "-fPIC -Wa,-mx86-used-note=yes" \