Set dynamic tag VMA and size from dynamic section when possible

Rather than searching the output for a specific named section, it's
better, where possible, to use a linker created dynamic section to set
a dynamic tag's value.  That way ld doesn't depend on the output
section name, making it possibile to map dynamic sections differently.

bfd/
	* elf-m10300.c (_bfd_mn10300_elf_finish_dynamic_sections): Use
	linker dynamic sections in calculating size and address of
	* dynamic tags rather than using output sections.  Remove asserts.
	* elf32-arm.c (elf32_arm_finish_dynamic_sections): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_finish_dynamic_sections): Likewise.
	* elf32-cris.c (elf_cris_finish_dynamic_sections): Likewise.
	* elf32-i370.c (i370_elf_finish_dynamic_sections): Likewise.
	* elf32-lm32.c (lm32_elf_finish_dynamic_sections): Likewise.
	* elf32-m32r.c (m32r_elf_finish_dynamic_sections): Likewise.
	* elf32-m68k.c (elf_m68k_finish_dynamic_sections): Likewise.
	* elf32-metag.c (elf_metag_finish_dynamic_sections): Likewise.
	* elf32-microblaze.c (microblaze_elf_finish_dynamic_sections): Likewise.
	* elf32-nds32.c (nds32_elf_finish_dynamic_sections): Likewise.
	* elf32-nios2.c (nios2_elf32_finish_dynamic_sections): Likewise.
	* elf32-or1k.c (or1k_elf_finish_dynamic_sections): Likewise.
	* elf32-s390.c (elf_s390_finish_dynamic_sections): Likewise.
	* elf32-score.c (s3_bfd_score_elf_finish_dynamic_sections): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_finish_dynamic_sections): Likewise.
	* elf32-vax.c (elf_vax_finish_dynamic_sections): Likewise.
	* elf32-xtensa.c (elf_xtensa_finish_dynamic_sections): Likewise.
	* elf64-alpha.c (elf64_alpha_finish_dynamic_sections): Likewise.
	* elf64-s390.c (elf_s390_finish_dynamic_sections): Likewise.
	* elf64-sh64.c (sh64_elf64_finish_dynamic_sections): Likewise.
	* elflink.c (bfd_elf_final_link): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_finish_dynamic_sections): Likewise.
	* elfxx-sparc.c (sparc_finish_dyn): Likewise.  Adjust error message.
	* elf32-arc.c (GET_SYMBOL_OR_SECTION): Remove ASSERT arg and
	don't set doit.  Look up dynobj section.
	(elf_arc_finish_dynamic_sections): Adjust GET_SYMBOL_OR_SECTION
	invocation and dynamic tag vma calculation.  Don't test
	boolean var == TRUE.
	* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_sections): Fix
	DT_JMPREL calc.
ld/
	* testsuite/ld-arm/arm-elf.exp: Adjust for arm-no-rel-plt now passing.
	Use different output file name for static app without .rel.plt.
	* testsuite/ld-arm/arm-no-rel-plt.ld: Align .rel.dyn and .rela.dyn.
	* testsuite/ld-arm/arm-no-rel-plt.out: Delete.
	* testsuite/ld-arm/arm-no-rel-plt.r: New.
	* testsuite/ld-arm/arm-static-app.d: Don't check file name.
	* testsuite/ld-arm/arm-static-app.r: Likewise.

7 files changed, 26 insertions, 9 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 6480439..6587105 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,13 @@
+2016-05-13  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/ld-arm/arm-elf.exp: Adjust for arm-no-rel-plt now passing.
+	Use different output file name for static app without .rel.plt.
+	* testsuite/ld-arm/arm-no-rel-plt.ld: Align .rel.dyn and .rela.dyn.
+	* testsuite/ld-arm/arm-no-rel-plt.out: Delete.
+	* testsuite/ld-arm/arm-no-rel-plt.r: New.
+	* testsuite/ld-arm/arm-static-app.d: Don't check file name.
+	* testsuite/ld-arm/arm-static-app.r: Likewise.
+
 2016-05-12  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/20070
diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp
index f34ce5f..db25a8d 100644
--- a/ld/testsuite/ld-arm/arm-elf.exp
+++ b/ld/testsuite/ld-arm/arm-elf.exp
@@ -286,11 +286,11 @@ set armelftests_nonacl {
     {"Simple static application without .rel.plt in linker script"
 	"-T arm-no-rel-plt.ld" "" "" {arm-static-app.s}
      {{objdump -fdw arm-static-app.d} {objdump -rw arm-static-app.r}}
-     "arm-static-app"}
+     "arm-static-app-no-rel-plt"}
     {"Simple dynamic application without .rel.plt in linker script"
 	"tmpdir/arm-lib.so -T arm-no-rel-plt.ld" "" "" {arm-app.s}
-     {{ld arm-no-rel-plt.out}}
-     "arm-app"}
+     {{readelf -dr arm-no-rel-plt.r}}
+     "arm-app-no-rel-plt"}
     {"Non-pcrel function reference" "tmpdir/arm-lib.so" "" "" {arm-app-abs32.s}
      {{objdump -fdw arm-app-abs32.d} {objdump -Rw arm-app-abs32.r}}
      "arm-app-abs32"}
diff --git a/ld/testsuite/ld-arm/arm-no-rel-plt.ld b/ld/testsuite/ld-arm/arm-no-rel-plt.ld
index 391e663..d175a3d 100644
--- a/ld/testsuite/ld-arm/arm-no-rel-plt.ld
+++ b/ld/testsuite/ld-arm/arm-no-rel-plt.ld
@@ -14,7 +14,7 @@ SECTIONS
   .gnu.version    : { *(.gnu.version) }
   .gnu.version_d  : { *(.gnu.version_d) }
   .gnu.version_r  : { *(.gnu.version_r) }
-  .rel.dyn        :
+  .rel.dyn ALIGN (0x100) :
     {
       *(.rel.init)
       *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
@@ -34,7 +34,7 @@ SECTIONS
       PROVIDE_HIDDEN (__rela_iplt_start = .);
       PROVIDE_HIDDEN (__rela_iplt_end = .);
     }
-  .rela.dyn       :
+  .rela.dyn ALIGN (0x100) :
     {
       *(.rela.init)
       *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
diff --git a/ld/testsuite/ld-arm/arm-no-rel-plt.out b/ld/testsuite/ld-arm/arm-no-rel-plt.out
deleted file mode 100644
index 948d5a5..0000000
--- a/ld/testsuite/ld-arm/arm-no-rel-plt.out
+++ /dev/null
@@ -1,2 +0,0 @@
-.*: error: required section '.rel.plt' not found in the linker script
-.*: final link failed: Invalid operation
diff --git a/ld/testsuite/ld-arm/arm-no-rel-plt.r b/ld/testsuite/ld-arm/arm-no-rel-plt.r
new file mode 100644
index 0000000..686957e
--- /dev/null
+++ b/ld/testsuite/ld-arm/arm-no-rel-plt.r
@@ -0,0 +1,9 @@
+#...
+ 0x00000017 \(JMPREL\) +0x.*08
+ 0x00000011 \(REL\) +0x.*00
+#...
+
+Relocation section '\.rel\.dyn' at offset 0x.*00 contains 2 entries:
+ Offset +Info +Type +Sym\.Value +Sym\. Name
+.* R_ARM_COPY .* data_obj
+.* R_ARM_JUMP_SLOT .* lib_func1
diff --git a/ld/testsuite/ld-arm/arm-static-app.d b/ld/testsuite/ld-arm/arm-static-app.d
index 40355c8..9547cd9 100644
--- a/ld/testsuite/ld-arm/arm-static-app.d
+++ b/ld/testsuite/ld-arm/arm-static-app.d
@@ -1,5 +1,5 @@
 
-tmpdir/arm-static-app:     file format elf32-(little|big)arm.*
+.*:     file format elf32-(little|big)arm.*
 architecture: arm.*, flags 0x00000112:
 EXEC_P, HAS_SYMS, D_PAGED
 start address 0x.*
diff --git a/ld/testsuite/ld-arm/arm-static-app.r b/ld/testsuite/ld-arm/arm-static-app.r
index 92df70e..cad5905 100644
--- a/ld/testsuite/ld-arm/arm-static-app.r
+++ b/ld/testsuite/ld-arm/arm-static-app.r
@@ -1,3 +1,3 @@
 
-tmpdir/arm-static-app:     file format elf32-(little|big)arm.*
+.*:     file format elf32-(little|big)arm.*