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Make __start/__stop symbols dynamic and add testcase

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bfd/
	* elflink.c (bfd_elf_define_start_stop): Make __start and __stop
	symbols dynamic.
ld/
	* testsuite/ld-elf/pr21964-3a.c: New file.
	* testsuite/ld-elf/pr21964-3c.c: New file.
	* testsuite/ld-elf/shared.exp: Run new __start/__stop testcase.
This commit is contained in:
Alan Modra 2018-01-29 21:45:09 +10:30
parent 185cdb8cc7
commit 36b8fda5d6
6 changed files with 52 additions and 2 deletions
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5
bfd/ChangeLog
View File

@ -1,3 +1,8 @@
2018-01-30 Alan Modra <amodra@gmail.com>
* elflink.c (bfd_elf_define_start_stop): Make __start and __stop
symbols dynamic.
2018-01-29 Alan Modra <amodra@gmail.com>
PR 22741

9
bfd/elflink.c
View File

@ -14354,8 +14354,13 @@ bfd_elf_define_start_stop (struct bfd_link_info *info,
bed = get_elf_backend_data (info->output_bfd);
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
}
else if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_PROTECTED;
else
{
if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_PROTECTED;
if (h->ref_dynamic || h->def_dynamic)
bfd_elf_link_record_dynamic_symbol (info, h);
}
return &h->root;
}
return NULL;

6
ld/ChangeLog
View File

@ -1,3 +1,9 @@
2018-01-29 Alan Modra <amodra@gmail.com>
* testsuite/ld-elf/pr21964-3a.c: New file.
* testsuite/ld-elf/pr21964-3c.c: New file.
* testsuite/ld-elf/shared.exp: Run new __start/__stop testcase.
2018-01-29 Eric Botcazou <ebotcazou@adacore.com>
* testsuite/ld-elf/shared.exp (AFLAGS_PIC): Define on SPARC.

11
ld/testsuite/ld-elf/pr21964-3a.c Normal file
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@ -0,0 +1,11 @@
extern int __start___verbose[];
extern int __stop___verbose[];
int
foo3 (void)
{
if (__start___verbose == __stop___verbose
|| __start___verbose[0] != 6)
return -1;
else
return 0;
}

17
ld/testsuite/ld-elf/pr21964-3c.c Normal file
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@ -0,0 +1,17 @@
#include <stdio.h>
extern int foo1 (void);
extern int foo2 (void);
extern int foo3 (void);
static int my_var __attribute__((used, section("__verbose"))) = 6;
int
main ()
{
if (foo1 () == 0
&& foo2 () == 0
&& foo3 () == 0)
printf ("PASS\n");
return 0;
}

6
ld/testsuite/ld-elf/shared.exp
View File

@ -569,6 +569,9 @@ set build_tests {
{"Build pr21964-2b.so"
"-shared" "-fPIC"
{pr21964-2b.c} {} "pr21964-2b.so"}
{"Build pr21964-3a.so"
"-shared" "-fPIC"
{pr21964-3a.c} {} "pr21964-3a.so"}
{"Dump pr21978.so"
"-shared" "-fPIC -g -O2"
{pr21978a.c pr21978b.c} {{objdump {-Sl} pr21978.od}} "pr21978.so"}
@ -705,6 +708,9 @@ set run_tests [list \
[list "Run pr21964-1" \
"-Wl,--no-as-needed,-rpath,tmpdir tmpdir/pr21964-1a.so tmpdir/pr21964-1b.so" "" \
{pr21964-1c.c} "pr21964-1" "pass.out" ] \
[list "Run pr21964-3" \
"-Wl,--no-as-needed,-rpath,tmpdir tmpdir/pr21964-1a.so tmpdir/pr21964-1b.so tmpdir/pr21964-3a.so" "" \
{pr21964-3c.c} "pr21964-3" "pass.out" ] \
]
# NetBSD ELF systems do not currently support the .*_array sections.