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-rw-r--r--bfd/ChangeLog6
-rw-r--r--bfd/elf32-i386.c4
-rw-r--r--bfd/elf64-x86-64.c5
-rw-r--r--ld/testsuite/ChangeLog14
-rw-r--r--ld/testsuite/ld-i386/i386.exp2
-rw-r--r--ld/testsuite/ld-i386/mov1.s6
-rw-r--r--ld/testsuite/ld-i386/mov1a.d13
-rw-r--r--ld/testsuite/ld-i386/mov1b.d13
-rw-r--r--ld/testsuite/ld-x86-64/mov1.s6
-rw-r--r--ld/testsuite/ld-x86-64/mov1a.d13
-rw-r--r--ld/testsuite/ld-x86-64/mov1b.d13
-rw-r--r--ld/testsuite/ld-x86-64/mov1c.d13
-rw-r--r--ld/testsuite/ld-x86-64/mov1d.d13
-rw-r--r--ld/testsuite/ld-x86-64/x86-64.exp4
14 files changed, 123 insertions, 2 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 71933e6..d545c1d 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,11 @@
2012-08-31 H.J. Lu <hongjiu.lu@intel.com>
+ * elf32-i386.c (elf_i386_convert_mov_to_lea): Don't optimize
+ _DYNAMIC.
+ * elf64-x86-64.c (elf_x86_64_convert_mov_to_lea): Likewise.
+
+2012-08-31 H.J. Lu <hongjiu.lu@intel.com>
+
* elf32-i386.c (elf_i386_convert_mov_to_lea): New.
(elf_i386_size_dynamic_sections): Use it on input sections.
(elf_i386_relocate_section): Don't convert
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index c9bc694..eab963c 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -2631,9 +2631,11 @@ elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
- /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
+ /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
+ optimizing _DYNAMIC since ld.so may use its link-time address. */
if (h->def_regular
&& h->type != STT_GNU_IFUNC
+ && strcmp (h->root.root.string, "_DYNAMIC") != 0
&& SYMBOL_REFERENCES_LOCAL (link_info, h)
&& bfd_get_8 (input_bfd,
contents + irel->r_offset - 2) == 0x8b)
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 0c37cd3..9edc5ae 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -2667,9 +2667,12 @@ elf_x86_64_convert_mov_to_lea (bfd *abfd, asection *sec,
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
- /* STT_GNU_IFUNC must keep R_X86_64_GOTPCREL relocation. */
+ /* STT_GNU_IFUNC must keep R_X86_64_GOTPCREL relocation. We also
+ avoid optimizing _DYNAMIC since ld.so may use its link-time
+ address. */
if (h->def_regular
&& h->type != STT_GNU_IFUNC
+ && strcmp (h->root.root.string, "_DYNAMIC") != 0
&& SYMBOL_REFERENCES_LOCAL (link_info, h)
&& bfd_get_8 (input_bfd,
contents + irel->r_offset - 2) == 0x8b)
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index 35740cc..dc9223d 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,5 +1,19 @@
2012-08-31 H.J. Lu <hongjiu.lu@intel.com>
+ * ld-i386/i386.exp: Run mov1a, mov1b.
+ * ld-x86-64/x86-64.exp: Run mov1a, mov1b, mov1c, mov1d.
+
+ * ld-i386/mov1.s: New file.
+ * ld-i386/mov1a.d: Likewise.
+ * ld-i386/mov1b.d: Likewise.
+ * ld-x86-64/mov1.s: Likewise.
+ * ld-x86-64/mov1a.d: Likewise.
+ * ld-x86-64/mov1b.d: Likewise.
+ * ld-x86-64/mov1c.d: Likewise.
+ * ld-x86-64/mov1d.d: Likewise.
+
+2012-08-31 H.J. Lu <hongjiu.lu@intel.com>
+
* ld-i386/i386.exp: Run lea1d, lea1f, lea1f.
* ld-x86-64/x86-64.exp: Run lea1g, lea1h, lea1i, lea1j, lea1k,
lea1l.
diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index adb852e..f5835ac 100644
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -239,6 +239,8 @@ run_dump_test "lea1c"
run_dump_test "lea1d"
run_dump_test "lea1e"
run_dump_test "lea1f"
+run_dump_test "mov1a"
+run_dump_test "mov1b"
if { !([istarget "i?86-*-linux*"]
|| [istarget "i?86-*-gnu*"]
diff --git a/ld/testsuite/ld-i386/mov1.s b/ld/testsuite/ld-i386/mov1.s
new file mode 100644
index 0000000..c813e71
--- /dev/null
+++ b/ld/testsuite/ld-i386/mov1.s
@@ -0,0 +1,6 @@
+ .text
+ .globl _start
+ .type _start, @function
+_start:
+ movl _DYNAMIC@GOT(%ecx), %eax
+ .size _start, .-_start
diff --git a/ld/testsuite/ld-i386/mov1a.d b/ld/testsuite/ld-i386/mov1a.d
new file mode 100644
index 0000000..d8ce6b8
--- /dev/null
+++ b/ld/testsuite/ld-i386/mov1a.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --32
+#ld: -shared -melf_i386
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 8b 81 ([0-9a-f]{2} ){4} * mov -0x[a-f0-9]+\(%ecx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/mov1b.d b/ld/testsuite/ld-i386/mov1b.d
new file mode 100644
index 0000000..583dfc8
--- /dev/null
+++ b/ld/testsuite/ld-i386/mov1b.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --32
+#ld: -pie -melf_i386
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 8b 81 ([0-9a-f]{2} ){4} * mov -0x[a-f0-9]+\(%ecx\),%eax
+#pass
diff --git a/ld/testsuite/ld-x86-64/mov1.s b/ld/testsuite/ld-x86-64/mov1.s
new file mode 100644
index 0000000..2a11b7a
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/mov1.s
@@ -0,0 +1,6 @@
+ .text
+ .globl _start
+ .type _start, @function
+_start:
+ movq _DYNAMIC@GOTPCREL(%rip), %rax
+ .size _start, .-_start
diff --git a/ld/testsuite/ld-x86-64/mov1a.d b/ld/testsuite/ld-x86-64/mov1a.d
new file mode 100644
index 0000000..df156be
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/mov1a.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --64
+#ld: -shared -melf_x86_64
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 48 8b 05 ([0-9a-f]{2} ){4} * mov 0x[a-f0-9]+\(%rip\),%rax # [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+#pass
diff --git a/ld/testsuite/ld-x86-64/mov1b.d b/ld/testsuite/ld-x86-64/mov1b.d
new file mode 100644
index 0000000..2f2f6f5
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/mov1b.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --64
+#ld: -pie -melf_x86_64
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 48 8b 05 ([0-9a-f]{2} ){4} * mov 0x[a-f0-9]+\(%rip\),%rax # [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+#pass
diff --git a/ld/testsuite/ld-x86-64/mov1c.d b/ld/testsuite/ld-x86-64/mov1c.d
new file mode 100644
index 0000000..a57e1c1
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/mov1c.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --x32
+#ld: -shared -melf32_x86_64
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 48 8b 05 ([0-9a-f]{2} ){4} * mov 0x[a-f0-9]+\(%rip\),%rax # [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+#pass
diff --git a/ld/testsuite/ld-x86-64/mov1d.d b/ld/testsuite/ld-x86-64/mov1d.d
new file mode 100644
index 0000000..955d33e
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/mov1d.d
@@ -0,0 +1,13 @@
+#source: mov1.s
+#as: --x32
+#ld: -pie -melf32_x86_64
+#objdump: -dw
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+#...
+[ ]*[a-f0-9]+: 48 8b 05 ([0-9a-f]{2} ){4} * mov 0x[a-f0-9]+\(%rip\),%rax # [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+#pass
diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index 7eabf39..1ad54e6 100644
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -288,6 +288,10 @@ run_dump_test "lea1i"
run_dump_test "lea1j"
run_dump_test "lea1k"
run_dump_test "lea1l"
+run_dump_test "mov1a"
+run_dump_test "mov1b"
+run_dump_test "mov1c"
+run_dump_test "mov1d"
# Must be native with the C compiler
if { [isnative] && [which $CC] != 0 } {
generated by cgit v1.1 at 2024-11-29 17:10:07 +0000