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Bind defined symbol locally in PIE
authorH.J. Lu <hjl.tools@gmail.com>
Tue, 15 Mar 2016 18:46:51 +0000 (11:46 -0700)
committerH.J. Lu <hjl.tools@gmail.com>
Tue, 15 Mar 2016 18:47:06 +0000 (11:47 -0700)
Symbols defined in PIE should be bound locally, the same as -shared
-Bsymbolic.

bfd/

PR ld/19827
* elf32-i386.c (elf_i386_check_relocs): Bind defined symbol
locally in PIE.
(elf_i386_relocate_section): Likewise.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
(elf_x86_64_relocate_section): Likewise.

ld/

PR ld/19827
* testsuite/ld-i386/i386.exp: Run PR ld/19827 tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr19827.rd: New file.
* testsuite/ld-i386/pr19827a.S: Likewise.
* testsuite/ld-i386/pr19827b.S: Likewise.
* testsuite/ld-x86-64/pr19827.rd: Likewise.
* testsuite/ld-x86-64/pr19827a.S: Likewise.
* testsuite/ld-x86-64/pr19827b.S: Likewise.

12 files changed:
bfd/ChangeLog patch | blob | history
bfd/elf32-i386.c patch | blob | history
bfd/elf64-x86-64.c patch | blob | history
ld/ChangeLog patch | blob | history
ld/testsuite/ld-i386/i386.exp patch | blob | history
ld/testsuite/ld-i386/pr19827.rd [new file with mode: 0644] patch | blob
ld/testsuite/ld-i386/pr19827a.S [new file with mode: 0644] patch | blob
ld/testsuite/ld-i386/pr19827b.S [new file with mode: 0644] patch | blob
ld/testsuite/ld-x86-64/pr19827.rd [new file with mode: 0644] patch | blob
ld/testsuite/ld-x86-64/pr19827a.S [new file with mode: 0644] patch | blob
ld/testsuite/ld-x86-64/pr19827b.S [new file with mode: 0644] patch | blob
ld/testsuite/ld-x86-64/x86-64.exp patch | blob | history

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2bb0cc1..740fd44 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,14 @@
 2016-03-15  H.J. Lu  <hongjiu.lu@intel.com>
 
+       PR ld/19827
+       * elf32-i386.c (elf_i386_check_relocs): Bind defined symbol
+       locally in PIE.
+       (elf_i386_relocate_section): Likewise.
+       * elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
+       (elf_x86_64_relocate_section): Likewise.
+
+2016-03-15  H.J. Lu  <hongjiu.lu@intel.com>
+
        PR ld/19807
        * elf64-x86-64.c (elf_x86_64_relocate_section): Check
        no_reloc_overflow_check to diable R_X86_64_32/R_X86_64_32S
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index ac3c2f4..1ebb615 100644 (file)
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -1874,7 +1874,8 @@ do_size:
               && (sec->flags & SEC_ALLOC) != 0
               && (r_type != R_386_PC32
                   || (h != NULL
-                      && (! SYMBOLIC_BIND (info, h)
+                      && (! (bfd_link_pie (info)
+                             || SYMBOLIC_BIND (info, h))
                           || h->root.type == bfd_link_hash_defweak
                           || !h->def_regular))))
              || (ELIMINATE_COPY_RELOCS
@@ -4431,8 +4432,8 @@ r_386_got32:
              else if (h != NULL
                       && h->dynindx != -1
                       && (r_type == R_386_PC32
-                          || !bfd_link_pic (info)
-                          || !SYMBOLIC_BIND (info, h)
+                          || !(bfd_link_executable (info)
+                               || SYMBOLIC_BIND (info, h))
                           || !h->def_regular))
                outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
              else
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 31b1f87..dc7738a 100644 (file)
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -2073,7 +2073,8 @@ do_size:
               && (sec->flags & SEC_ALLOC) != 0
               && (! IS_X86_64_PCREL_TYPE (r_type)
                   || (h != NULL
-                      && (! SYMBOLIC_BIND (info, h)
+                      && (! (bfd_link_pie (info)
+                             || SYMBOLIC_BIND (info, h))
                           || h->root.type == bfd_link_hash_defweak
                           || !h->def_regular))))
              || (ELIMINATE_COPY_RELOCS
@@ -4830,8 +4831,8 @@ direct:
              else if (h != NULL
                       && h->dynindx != -1
                       && (IS_X86_64_PCREL_TYPE (r_type)
-                          || ! bfd_link_pic (info)
-                          || ! SYMBOLIC_BIND (info, h)
+                          || !(bfd_link_executable (info)
+                               || SYMBOLIC_BIND (info, h))
                           || ! h->def_regular))
                {
                  if ((r_type != R_X86_64_PC64 && r_type != R_X86_64_64)
diff --git a/ld/ChangeLog b/ld/ChangeLog
index d3172dc..04b484c 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,5 +1,17 @@
 2016-03-15  H.J. Lu  <hongjiu.lu@intel.com>
 
+       PR ld/19827
+       * testsuite/ld-i386/i386.exp: Run PR ld/19827 tests.
+       * testsuite/ld-x86-64/x86-64.exp: Likewise.
+       * testsuite/ld-i386/pr19827.rd: New file.
+       * testsuite/ld-i386/pr19827a.S: Likewise.
+       * testsuite/ld-i386/pr19827b.S: Likewise.
+       * testsuite/ld-x86-64/pr19827.rd: Likewise.
+       * testsuite/ld-x86-64/pr19827a.S: Likewise.
+       * testsuite/ld-x86-64/pr19827b.S: Likewise.
+
+2016-03-15  H.J. Lu  <hongjiu.lu@intel.com>
+
        PR ld/19807
        * Makefile.am (ELF_X86_DEPS): Add
        $(srcdir)/emulparams/reloc_overflow.sh.
diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index 1e52cdb..2b7a09e 100644 (file)
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -195,6 +195,14 @@ set i386tests {
      "--32" {pr17709a.s} {} "libpr17709.so"}
     {"PR ld/17709 (2)" "-melf_i386 tmpdir/libpr17709.so" ""
      "--32" {pr17709b.s} {{readelf -r pr17709.rd}} "pr17709"}
+    {"Build pr19827a.o" "" ""
+     "--32" { pr19827a.S }}
+    {"Build pr19827b.so" "-melf_i386 -shared" ""
+     "--32" { pr19827b.S } {} "pr19827b.so"}
+    {"Build pr19827" "-melf_i386 -pie tmpdir/pr19827a.o tmpdir/pr19827b.so" ""
+     "--32" { dummy.s } {{readelf {-rW} pr19827.rd}} "pr19827"}
+    {"Build pr19827.so" "-melf_i386 -shared -Bsymbolic" ""
+     "--32" { pr19827a.S }  {{readelf {-rW} pr19827.rd}} "pr19827.so"}
 }
 
 # So as to avoid rewriting every last test case here in a nacl variant,
diff --git a/ld/testsuite/ld-i386/pr19827.rd b/ld/testsuite/ld-i386/pr19827.rd
new file mode 100644 (file)
index 0000000..5d2a885
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr19827.rd
@@ -0,0 +1,5 @@
+#readelf: -r --wide
+
+Relocation section '.rel.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
+ Offset     Info    Type                Sym. Value  Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_RELATIVE +
diff --git a/ld/testsuite/ld-i386/pr19827a.S b/ld/testsuite/ld-i386/pr19827a.S
new file mode 100644 (file)
index 0000000..cdf1d4b
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr19827a.S
@@ -0,0 +1,8 @@
+       .text
+       .global _start
+_start:
+       .dc.a foo
+       .data
+       .globl foo
+foo:
+       .byte 0
diff --git a/ld/testsuite/ld-i386/pr19827b.S b/ld/testsuite/ld-i386/pr19827b.S
new file mode 100644 (file)
index 0000000..bb46e1d
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr19827b.S
@@ -0,0 +1,2 @@
+       .data
+       .dc.a foo
diff --git a/ld/testsuite/ld-x86-64/pr19827.rd b/ld/testsuite/ld-x86-64/pr19827.rd
new file mode 100644 (file)
index 0000000..67eaacc
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr19827.rd
@@ -0,0 +1,5 @@
+#readelf: -r --wide
+
+Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
+    Offset             Info             Type               Symbol's Value  Symbol's Name \+ Addend
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_RELATIVE +[0-9a-f]+
diff --git a/ld/testsuite/ld-x86-64/pr19827a.S b/ld/testsuite/ld-x86-64/pr19827a.S
new file mode 100644 (file)
index 0000000..cdf1d4b
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr19827a.S
@@ -0,0 +1,8 @@
+       .text
+       .global _start
+_start:
+       .dc.a foo
+       .data
+       .globl foo
+foo:
+       .byte 0
diff --git a/ld/testsuite/ld-x86-64/pr19827b.S b/ld/testsuite/ld-x86-64/pr19827b.S
new file mode 100644 (file)
index 0000000..bb46e1d
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr19827b.S
@@ -0,0 +1,2 @@
+       .data
+       .dc.a foo
diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index 8f29761..603ef37 100644 (file)
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -148,6 +148,14 @@ set x86_64tests {
      "--64" {pr17709a.s} {} "libpr17709.so"}
     {"PR ld/17709 (2)" "-melf_x86_64 tmpdir/libpr17709.so" ""
      "--64" {pr17709b.s} {{readelf -rW pr17709.rd}} "pr17709"}
+    {"Build pr19827a.o" "" ""
+     "--64" { pr19827a.S }}
+    {"Build pr19827b.so" "-melf_x86_64 -shared" ""
+     "--64" { pr19827b.S } {} "pr19827b.so"}
+    {"Build pr19827" "-melf_x86_64 -pie tmpdir/pr19827a.o tmpdir/pr19827b.so" ""
+     "--64" { dummy.s } {{readelf {-rW} pr19827.rd}} "pr19827"}
+    {"Build pr19827.so" "-melf_x86_64 -shared -Bsymbolic" ""
+     "--64" { pr19827a.S }  {{readelf {-rW} pr19827.rd}} "pr19827.so"}
 }
 
 # So as to avoid rewriting every last test case here in a nacl variant,
Domain: System / Toolchain;