+2017-08-26 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/21997
+ * elf-bfd.h (elf_obj_tdata): Use ENUM_BITFIELD on object_id,
+ dyn_lib_class and has_gnu_symbols. Change bad_symtab to bitfield.
+ Add a has_no_copy_on_protected bitfield.
+ (elf_has_no_copy_on_protected): New.
+ * elf-properties.c (_bfd_elf_parse_gnu_properties): Set
+ elf_has_no_copy_on_protected for GNU_PROPERTY_NO_COPY_ON_PROTECTED.
+ (elf_merge_gnu_property_list): Likewise.
+ (_bfd_elf_link_setup_gnu_properties): Set extern_protected_data
+ to FALSE for elf_has_no_copy_on_protected.
+ * elf32-i386.c (SYMBOL_NO_COPYRELOC): New.
+ (elf_i386_link_hash_entry): Add def_protected.
+ (elf_i386_adjust_dynamic_symbol): Also check SYMBOL_NO_COPYRELOC
+ when checking info->nocopyreloc.
+ (elf_i386_link_setup_gnu_properties): Don't set
+ extern_protected_data here.
+ (elf_i386_merge_symbol_attribute): New function.
+ (elf_backend_merge_symbol_attribute): New.
+ * elf64-x86-64.c (SYMBOL_NO_COPYRELOC): New.
+ (elf_x86_64_link_hash_entry): Add def_protected.
+ (elf_x86_64_need_pic): Report protected symbol for def_protected.
+ (elf_x86_64_adjust_dynamic_symbol): Also check SYMBOL_NO_COPYRELOC
+ when checking info->nocopyreloc.
+ (elf_x86_64_relocate_section): Also check for R_X86_64_PC32
+ relocation run-time overflow and unresolvable R_X86_64_32S
+ relocation against protected data symbol defined in shared object
+ with GNU_PROPERTY_NO_COPY_ON_PROTECTED.
+ (elf_x86_64_link_setup_gnu_properties): Don't set
+ extern_protected_data here.
+ (elf_x86_64_merge_symbol_attribute): New function.
+ (elf_backend_merge_symbol_attribute): New.
+
2017-08-26 Alan Modra <amodra@gmail.com>
* elf32-ppc.c (must_be_dyn_reloc): Use bfd_link_dll. Comment.
/* An identifier used to distinguish different target
specific extensions to this structure. */
- enum elf_target_id object_id;
+ ENUM_BITFIELD (elf_target_id) object_id : 6;
/* Whether a dyanmic object was specified normally on the linker
command line, or was specified when --as-needed was in effect,
or was found via a DT_NEEDED entry. */
- enum dynamic_lib_link_class dyn_lib_class;
+ ENUM_BITFIELD (dynamic_lib_link_class) dyn_lib_class : 4;
+
+ /* Whether if the bfd contains symbols that have the STT_GNU_IFUNC
+ symbol type or STB_GNU_UNIQUE binding. */
+ ENUM_BITFIELD (elf_gnu_symbols) has_gnu_symbols : 3;
+
+ /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED
+ property. */
+ unsigned int has_no_copy_on_protected : 1;
/* Irix 5 often screws up the symbol table, sorting local symbols
after global symbols. This flag is set if the symbol table in
this BFD appears to be screwed up. If it is, we ignore the
sh_info field in the symbol table header, and always read all the
symbols. */
- bfd_boolean bad_symtab;
-
- enum elf_gnu_symbols has_gnu_symbols;
+ unsigned int bad_symtab : 1;
/* Information grabbed from an elf core file. */
struct core_elf_obj_tdata *core;
#define elf_other_obj_attributes_proc(bfd) \
(elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
#define elf_properties(bfd) (elf_tdata (bfd) -> properties)
+#define elf_has_no_copy_on_protected(bfd) \
+ (elf_tdata(bfd) -> has_no_copy_on_protected)
\f
extern void _bfd_elf_swap_verdef_in
(bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *);
return FALSE;
}
prop = _bfd_elf_get_property (abfd, type, datasz);
+ elf_has_no_copy_on_protected (abfd) = TRUE;
prop->pr_kind = property_number;
goto next;
for (p = *listp; p != NULL; p = p->next)
if (elf_merge_gnu_properties (info, abfd, NULL, &p->property))
{
+ if (p->property.pr_type == GNU_PROPERTY_NO_COPY_ON_PROTECTED)
+ elf_has_no_copy_on_protected (abfd) = TRUE;
+
pr = _bfd_elf_get_property (abfd, p->property.pr_type,
p->property.pr_datasz);
/* It must be a new property. */
/* Cache the section contents for elf_link_input_bfd. */
elf_section_data (sec)->this_hdr.contents = contents;
+
+ /* If GNU_PROPERTY_NO_COPY_ON_PROTECTED is set, protected data
+ symbol is defined in the shared object. */
+ if (elf_has_no_copy_on_protected (first_pbfd))
+ info->extern_protected_data = FALSE;
}
return first_pbfd;
|| (EH)->has_non_got_reloc \
|| !(INFO)->dynamic_undefined_weak))))
+/* Should copy relocation be generated for a symbol. Don't generate
+ copy relocation against a protected symbol defined in a shared
+ object with GNU_PROPERTY_NO_COPY_ON_PROTECTED. */
+#define SYMBOL_NO_COPYRELOC(INFO, EH) \
+ ((EH)->def_protected \
+ && ((EH)->elf.root.type == bfd_link_hash_defined \
+ || (EH)->elf.root.type == bfd_link_hash_defweak) \
+ && elf_has_no_copy_on_protected ((EH)->elf.root.u.def.section->owner) \
+ && ((EH)->elf.root.u.def.section->owner->flags & DYNAMIC) != 0 \
+ && ((EH)->elf.root.u.def.section->flags & SEC_CODE) == 0)
+
+
/* i386 ELF linker hash entry. */
struct elf_i386_link_hash_entry
/* TRUE if symbol is __tls_get_addr. */
unsigned int tls_get_addr : 1;
+ /* TRUE if symbol is defined as a protected symbol. */
+ unsigned int def_protected : 1;
+
/* Reference count of C/C++ function pointer relocations in read-write
section which can be resolved at run-time. */
bfd_signed_vma func_pointer_refcount;
the link may change h->type. So fix it now. */
h->plt.offset = (bfd_vma) -1;
+ eh = (struct elf_i386_link_hash_entry *) h;
+
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ if (ELIMINATE_COPY_RELOCS
+ || info->nocopyreloc
+ || SYMBOL_NO_COPYRELOC (info, eh))
h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
/* If there are no references to this symbol that do not use the
GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
reloc. */
- eh = (struct elf_i386_link_hash_entry *) h;
if (!h->non_got_ref && !eh->gotoff_ref)
return TRUE;
/* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
+ if (info->nocopyreloc || SYMBOL_NO_COPYRELOC (info, eh))
{
h->non_got_ref = 0;
return TRUE;
break;
}
- if (ebfd != NULL)
+ if (ebfd != NULL && features)
{
- if (features)
+ /* If features is set, add GNU_PROPERTY_X86_FEATURE_1_IBT and
+ GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
+ prop = _bfd_elf_get_property (ebfd,
+ GNU_PROPERTY_X86_FEATURE_1_AND,
+ 4);
+ prop->u.number |= features;
+ prop->pr_kind = property_number;
+
+ /* Create the GNU property note section if needed. */
+ if (pbfd == NULL)
{
- /* If features is set, add GNU_PROPERTY_X86_FEATURE_1_IBT and
- GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
- prop = _bfd_elf_get_property (ebfd,
- GNU_PROPERTY_X86_FEATURE_1_AND,
- 4);
- prop->u.number |= features;
- prop->pr_kind = property_number;
-
- /* Create the GNU property note section if needed. */
- if (pbfd == NULL)
- {
- sec = bfd_make_section_with_flags (ebfd,
- NOTE_GNU_PROPERTY_SECTION_NAME,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_IN_MEMORY
- | SEC_READONLY
- | SEC_HAS_CONTENTS
- | SEC_DATA));
- if (sec == NULL)
- info->callbacks->einfo (_("%F: failed to create GNU property section\n"));
+ sec = bfd_make_section_with_flags (ebfd,
+ NOTE_GNU_PROPERTY_SECTION_NAME,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_HAS_CONTENTS
+ | SEC_DATA));
+ if (sec == NULL)
+ info->callbacks->einfo (_("%F: failed to create GNU property section\n"));
- if (!bfd_set_section_alignment (ebfd, sec, 2))
- {
+ if (!bfd_set_section_alignment (ebfd, sec, 2))
+ {
error_alignment:
- info->callbacks->einfo (_("%F%A: failed to align section\n"),
- sec);
- }
-
- elf_section_type (sec) = SHT_NOTE;
+ info->callbacks->einfo (_("%F%A: failed to align section\n"),
+ sec);
}
- }
- /* Check GNU_PROPERTY_NO_COPY_ON_PROTECTED. */
- for (; pbfd != NULL; pbfd = pbfd->link.next)
- if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour
- && (pbfd->flags
- & (DYNAMIC | BFD_LINKER_CREATED | BFD_PLUGIN)) == 0)
- {
- elf_property_list *p;
-
- /* The property list is sorted in order of type. */
- for (p = elf_properties (pbfd); p != NULL; p = p->next)
- {
- if (GNU_PROPERTY_NO_COPY_ON_PROTECTED
- == p->property.pr_type)
- {
- /* Clear extern_protected_data if
- GNU_PROPERTY_NO_COPY_ON_PROTECTED is
- set on any input relocatable file. */
- info->extern_protected_data = FALSE;
- break;
- }
- else if (GNU_PROPERTY_NO_COPY_ON_PROTECTED
- < p->property.pr_type)
- break;
- }
- }
+ elf_section_type (sec) = SHT_NOTE;
+ }
}
pbfd = _bfd_elf_link_setup_gnu_properties (info);
return _bfd_elf_link_check_relocs (abfd, info);
}
+static void
+elf_i386_merge_symbol_attribute (struct elf_link_hash_entry *h,
+ const Elf_Internal_Sym *isym,
+ bfd_boolean definition,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED)
+{
+ if (definition)
+ {
+ struct elf_i386_link_hash_entry *eh
+ = (struct elf_i386_link_hash_entry *) h;
+ eh->def_protected = (ELF_ST_VISIBILITY (isym->st_other)
+ == STV_PROTECTED);
+ }
+}
+
#define TARGET_LITTLE_SYM i386_elf32_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
#define elf_backend_parse_gnu_properties elf_i386_parse_gnu_properties
#define elf_backend_merge_gnu_properties elf_i386_merge_gnu_properties
#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
+#define elf_backend_merge_symbol_attribute elf_i386_merge_symbol_attribute
#include "elf32-target.h"
|| (EH)->has_non_got_reloc \
|| !(INFO)->dynamic_undefined_weak))))
+/* Should copy relocation be generated for a symbol. Don't generate
+ copy relocation against a protected symbol defined in a shared
+ object with GNU_PROPERTY_NO_COPY_ON_PROTECTED. */
+#define SYMBOL_NO_COPYRELOC(INFO, EH) \
+ ((EH)->def_protected \
+ && ((EH)->elf.root.type == bfd_link_hash_defined \
+ || (EH)->elf.root.type == bfd_link_hash_defweak) \
+ && elf_has_no_copy_on_protected ((EH)->elf.root.u.def.section->owner) \
+ && ((EH)->elf.root.u.def.section->owner->flags & DYNAMIC) != 0 \
+ && ((EH)->elf.root.u.def.section->flags & SEC_CODE) == 0)
+
/* x86-64 ELF linker hash entry. */
struct elf_x86_64_link_hash_entry
/* TRUE if symbol is __tls_get_addr. */
unsigned int tls_get_addr : 1;
+ /* TRUE if symbol is defined as a protected symbol. */
+ unsigned int def_protected : 1;
+
/* Reference count of C/C++ function pointer relocations in read-write
section which can be resolved at run-time. */
bfd_signed_vma func_pointer_refcount;
v = _("protected symbol ");
break;
default:
- v = _("symbol ");
+ if (((struct elf_x86_64_link_hash_entry *) h)->def_protected)
+ v = _("protected symbol ");
+ else
+ v = _("symbol ");
pic = _("; recompile with -fPIC");
break;
}
the link may change h->type. So fix it now. */
h->plt.offset = (bfd_vma) -1;
+ eh = (struct elf_x86_64_link_hash_entry *) h;
+
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ if (ELIMINATE_COPY_RELOCS
+ || info->nocopyreloc
+ || SYMBOL_NO_COPYRELOC (info, eh))
{
- eh = (struct elf_x86_64_link_hash_entry *) h;
h->non_got_ref = h->u.weakdef->non_got_ref;
eh->needs_copy = h->u.weakdef->needs_copy;
}
return TRUE;
/* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
+ if (info->nocopyreloc || SYMBOL_NO_COPYRELOC (info, eh))
{
h->non_got_ref = 0;
return TRUE;
&& ((bfd_link_executable (info)
&& ((h->root.type == bfd_link_hash_undefweak
&& !resolved_to_zero)
- || (info->nocopyreloc
+ || ((info->nocopyreloc
+ || (eh->def_protected
+ && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
&& h->def_dynamic
&& !(h->root.u.def.section->flags & SEC_CODE))))
|| bfd_link_dll (info)))
switch (r_type)
{
case R_X86_64_32S:
- if (info->nocopyreloc
+ sec = h->root.u.def.section;
+ if ((info->nocopyreloc
+ || (eh->def_protected
+ && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
&& !(h->root.u.def.section->flags & SEC_CODE))
return elf_x86_64_need_pic (info, input_bfd, input_section,
h, NULL, NULL, howto);
return TRUE;
}
+static void
+elf_x86_64_merge_symbol_attribute (struct elf_link_hash_entry *h,
+ const Elf_Internal_Sym *isym,
+ bfd_boolean definition,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED)
+{
+ if (definition)
+ {
+ struct elf_x86_64_link_hash_entry *eh
+ = (struct elf_x86_64_link_hash_entry *) h;
+ eh->def_protected = (ELF_ST_VISIBILITY (isym->st_other)
+ == STV_PROTECTED);
+ }
+}
+
static int
elf_x86_64_additional_program_headers (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
break;
}
- if (ebfd != NULL)
+ if (ebfd != NULL && features)
{
- if (features)
+ /* If features is set, add GNU_PROPERTY_X86_FEATURE_1_IBT and
+ GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
+ prop = _bfd_elf_get_property (ebfd,
+ GNU_PROPERTY_X86_FEATURE_1_AND,
+ 4);
+ prop->u.number |= features;
+ prop->pr_kind = property_number;
+
+ /* Create the GNU property note section if needed. */
+ if (pbfd == NULL)
{
- /* If features is set, add GNU_PROPERTY_X86_FEATURE_1_IBT and
- GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
- prop = _bfd_elf_get_property (ebfd,
- GNU_PROPERTY_X86_FEATURE_1_AND,
- 4);
- prop->u.number |= features;
- prop->pr_kind = property_number;
-
- /* Create the GNU property note section if needed. */
- if (pbfd == NULL)
- {
- sec = bfd_make_section_with_flags (ebfd,
- NOTE_GNU_PROPERTY_SECTION_NAME,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_IN_MEMORY
- | SEC_READONLY
- | SEC_HAS_CONTENTS
- | SEC_DATA));
- if (sec == NULL)
- info->callbacks->einfo (_("%F: failed to create GNU property section\n"));
+ sec = bfd_make_section_with_flags (ebfd,
+ NOTE_GNU_PROPERTY_SECTION_NAME,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_HAS_CONTENTS
+ | SEC_DATA));
+ if (sec == NULL)
+ info->callbacks->einfo (_("%F: failed to create GNU property section\n"));
- if (!bfd_set_section_alignment (ebfd, sec,
- ABI_64_P (ebfd) ? 3 : 2))
- {
+ if (!bfd_set_section_alignment (ebfd, sec,
+ ABI_64_P (ebfd) ? 3 : 2))
+ {
error_alignment:
- info->callbacks->einfo (_("%F%A: failed to align section\n"),
- sec);
- }
-
- elf_section_type (sec) = SHT_NOTE;
+ info->callbacks->einfo (_("%F%A: failed to align section\n"),
+ sec);
}
- }
-
- /* Check GNU_PROPERTY_NO_COPY_ON_PROTECTED. */
- for (; pbfd != NULL; pbfd = pbfd->link.next)
- if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour
- && (pbfd->flags
- & (DYNAMIC | BFD_LINKER_CREATED | BFD_PLUGIN)) == 0)
- {
- elf_property_list *p;
- /* The property list is sorted in order of type. */
- for (p = elf_properties (pbfd); p != NULL; p = p->next)
- {
- if (GNU_PROPERTY_NO_COPY_ON_PROTECTED
- == p->property.pr_type)
- {
- /* Clear extern_protected_data if
- GNU_PROPERTY_NO_COPY_ON_PROTECTED is
- set on any input relocatable file. */
- info->extern_protected_data = FALSE;
- break;
- }
- else if (GNU_PROPERTY_NO_COPY_ON_PROTECTED
- < p->property.pr_type)
- break;
- }
- }
+ elf_section_type (sec) = SHT_NOTE;
+ }
}
pbfd = _bfd_elf_link_setup_gnu_properties (info);
elf_x86_64_common_definition
#define elf_backend_merge_symbol \
elf_x86_64_merge_symbol
+#define elf_backend_merge_symbol_attribute \
+ elf_x86_64_merge_symbol_attribute
#define elf_backend_special_sections \
elf_x86_64_special_sections
#define elf_backend_additional_program_headers \
+2017-08-26 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/21997
+ * testsuite/ld-i386/i386.exp: Run PR ld/21997 tests.
+ * testsuite/ld-x86-64/x86-64.exp: Likewise.
+ * testsuite/ld-i386/pr21997-1a.S: New file.
+ * testsuite/ld-i386/pr21997-1b.c: Likewise.
+ * testsuite/ld-i386/pr21997-1c.S: Likewise.
+ * testsuite/ld-x86-64/pr21997-1a.S: Likewise.
+ * testsuite/ld-x86-64/pr21997-1a.err: Likewise.
+ * testsuite/ld-x86-64/pr21997-1b.c: Likewise.
+ * testsuite/ld-x86-64/pr21997-1b.err: Likewise.
+ * testsuite/ld-x86-64/pr21997-1c.c: Likewise.
+
2017-08-24 H.J. Lu <hongjiu.lu@intel.com>
* testsuite/ld-elf/pr21903c.d: Remove '\' before --.
{} \
"pr22001-1.so" \
] \
+ [list \
+ "Build pr21997-1.so" \
+ "-shared" \
+ "" \
+ { property-stack.S property-no-copy.S pr21997-1a.S } \
+ {} \
+ "pr21997-1.so" \
+ ] \
]
run_ld_link_exec_tests [list \
"pass.out" \
"-fPIC" \
] \
+ [list \
+ "Run pr21997-1" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1b.c } \
+ "pr21997-1" \
+ "pass.out" \
+ "$NOPIE_CFLAGS" \
+ ] \
+ [list \
+ "Run pr21997-1 (PIC 1)" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1b.c } \
+ "pr21997-1-pic-1" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
+ [list \
+ "Run pr21997-1 (PIC 2)" \
+ "-pie -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1b.c } \
+ "pr21997-1-pic-2" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
+ [list \
+ "Run pr21997-1 (PIE 1)" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1c.S } \
+ "pr21997-1-pie-1" \
+ "pass.out" \
+ ] \
+ [list \
+ "Run pr21997-1 (PIE 2)" \
+ "-pie -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1c.S } \
+ "pr21997-1-pie-2" \
+ "pass.out" \
+ ] \
]
if { [at_least_gcc_version 5 0] } {
--- /dev/null
+ .text
+ .p2align 4,,15
+ .globl get_protected
+ .type get_protected, @function
+get_protected:
+ call __x86.get_pc_thunk.ax
+ addl $_GLOBAL_OFFSET_TABLE_, %eax
+ movl protected@GOTOFF(%eax), %eax
+ ret
+ .size get_protected, .-get_protected
+ .p2align 4,,15
+ .globl get_protected_p
+ .type get_protected_p, @function
+get_protected_p:
+ call __x86.get_pc_thunk.ax
+ addl $_GLOBAL_OFFSET_TABLE_, %eax
+ leal protected@GOTOFF(%eax), %eax
+ ret
+ .size get_protected_p, .-get_protected_p
+ .protected protected
+ .globl protected
+ .data
+ .align 4
+ .type protected, @object
+ .size protected, 4
+protected:
+ .long 1
+ .section .text.__x86.get_pc_thunk.ax,"axG",@progbits,__x86.get_pc_thunk.ax,comdat
+ .globl __x86.get_pc_thunk.ax
+ .hidden __x86.get_pc_thunk.ax
+ .type __x86.get_pc_thunk.ax, @function
+__x86.get_pc_thunk.ax:
+ movl (%esp), %eax
+ ret
+ .section .note.GNU-stack,"",@progbits
--- /dev/null
+#include <stdio.h>
+
+extern int protected;
+extern int get_protected (void);
+extern int* get_protected_p (void);
+
+int
+main ()
+{
+
+ if (protected == get_protected ()
+ && &protected == get_protected_p ())
+ printf ("PASS\n");
+
+ return 0;
+}
--- /dev/null
+ .section .rodata.str1.1,"aMS",@progbits,1
+.LC0:
+ .string "PASS"
+ .section .text.startup,"ax",@progbits
+ .p2align 4,,15
+ .globl main
+ .type main, @function
+main:
+ leal 4(%esp), %ecx
+ andl $-16, %esp
+ pushl -4(%ecx)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %esi
+ pushl %ebx
+ pushl %ecx
+ call __x86.get_pc_thunk.bx
+ addl $_GLOBAL_OFFSET_TABLE_, %ebx
+ subl $12, %esp
+ call get_protected@PLT
+ movl protected@GOT(%ebx), %esi
+ cmpl (%esi), %eax
+ je .L7
+.L3:
+ leal -12(%ebp), %esp
+ xorl %eax, %eax
+ popl %ecx
+ popl %ebx
+ popl %esi
+ popl %ebp
+ leal -4(%ecx), %esp
+ ret
+.L7:
+ call get_protected_p@PLT
+ cmpl %esi, %eax
+ jne .L3
+ leal .LC0@GOTOFF(%ebx), %eax
+ subl $12, %esp
+ pushl %eax
+ call puts@PLT
+ addl $16, %esp
+ jmp .L3
+ .size main, .-main
+ .section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+ .globl __x86.get_pc_thunk.bx
+ .hidden __x86.get_pc_thunk.bx
+ .type __x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+ movl (%esp), %ebx
+ ret
+ .section .note.GNU-stack,"",@progbits
--- /dev/null
+ .text
+ .p2align 4,,15
+ .globl get_protected
+ .type get_protected, @function
+get_protected:
+ movl protected(%rip), %eax
+ ret
+ .size get_protected, .-get_protected
+ .p2align 4,,15
+ .globl get_protected_p
+ .type get_protected_p, @function
+get_protected_p:
+ leaq protected(%rip), %rax
+ ret
+ .size get_protected_p, .-get_protected_p
+ .protected protected
+ .globl protected
+ .data
+ .align 4
+ .type protected, @object
+ .size protected, 4
+protected:
+ .long 1
+ .section .note.GNU-stack,"",@progbits
--- /dev/null
+.*relocation R_X86_64_PC32 against protected symbol `protected' can not be used when making a P(D|I)E object; recompile with -fPIC
+#...
--- /dev/null
+#include <stdio.h>
+
+extern int protected;
+extern int get_protected (void);
+
+int
+main ()
+{
+ if (protected == get_protected ())
+ printf ("PASS\n");
+
+ return 0;
+}
--- /dev/null
+.*relocation R_X86_64_32S against protected symbol `protected' can not be used when making a P(D|I)E object; recompile with -fPIC
+#...
--- /dev/null
+#include <stdio.h>
+
+extern int protected;
+extern int* get_protected_p (void);
+
+int
+main ()
+{
+ if (&protected == get_protected_p ())
+ printf ("PASS\n");
+
+ return 0;
+}
{{error_output "pr22001-1a.err"}} \
"pr22001-1a" \
] \
+ [list \
+ "Build pr21997-1.so" \
+ "-shared" \
+ "" \
+ { property-stack.S property-no-copy.S pr21997-1a.S } \
+ {} \
+ "pr21997-1.so" \
+ ] \
+ [list \
+ "Build pr21997-1a" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "$NOPIE_CFLAGS" \
+ { pr21997-1b.c } \
+ {{error_output "pr21997-1a.err"}} \
+ "pr21997-1a" \
+ ] \
]
if {[istarget "x86_64-*-linux*-gnux32"]} {
"pass.out" \
"$NOPIE_CFLAGS" \
] \
+ [list \
+ "Run pr21997-1b" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1c.c } \
+ "pr21997-1b" \
+ "pass.out" \
+ "$NOPIE_CFLAGS" \
+ ] \
]
} else {
run_cc_link_tests [list \
{{error_output "pr22001-1b.err"}} \
"pr22001-1b" \
] \
+ [list \
+ "Build pr21997-1b" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "$NOPIE_CFLAGS" \
+ { pr21997-1c.c } \
+ {{error_output "pr21997-1b.err"}} \
+ "pr21997-1b" \
+ ] \
]
}
"pass.out" \
"-fPIC" \
] \
+ [list \
+ "Run pr21997-1a (PIC 1)" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1b.c } \
+ "pr21997-1a-pic-1" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
+ [list \
+ "Run pr21997-1a (PIC 2)" \
+ "-pie -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1b.c } \
+ "pr21997-1a-pic-2" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
+ [list \
+ "Run pr21997-1b (PIC 1)" \
+ "$NOPIE_LDFLAGS -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1c.c } \
+ "pr21997-1b-pic-1" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
+ [list \
+ "Run pr21997-1b (PIC 2)" \
+ "-pie -Wl,--no-as-needed tmpdir/pr21997-1.so" \
+ "" \
+ { pr21997-1c.c } \
+ "pr21997-1b-pic-2" \
+ "pass.out" \
+ "-fPIC" \
+ ] \
]
# Run-time tests which require working ifunc attribute support.
projects / binutils-gdb.git / commitdiff