Properly convert address load of __start_XXX/__stop_XXX

Since __start_XXX and __stop_XXX symbols aren't defined when address
load is being converted, we need to check if there is an XXX output
section to get their section and value.  This patch adds a new function,
bfd_link_get_defined_symbol, to search for the XXX output section to
check if __start_XXX and __stop_XXX symbols are defined.

bfd/

	PR ld/19171
	* elf32-i386.c (elf_i386_convert_load): Call
	bfd_link_get_defined_symbol to check if a symbol is defined.
	* elf64-x86-64.c (elf_x86_64_convert_load): Call
	bfd_link_get_defined_symbol to get defined symbol section and
	value.
	* linker.c (bfd_link_get_defined_symbol): New function.
	* bfd-in2.h: Regenerated.

ld/testsuite/

	PR ld/19171
	* ld-i386/lea1.s: Add tests for address load of __start_XXX
	and __stop_XXX.
	* ld-i386/mov1.s: Likewise.
	* ld-x86-64/lea1.s: Likewise.
	* ld-x86-64/mov1.s: Likewise.
	* ld-i386/lea1a.d: Updated.
	* ld-i386/lea1b.d: Likewise.
	* ld-i386/lea1c.d: Likewise.
	* ld-i386/mov1a.d: Likewise.
	* ld-i386/mov1b.d: Likewise.
	* ld-x86-64/lea1a.d: Likewise.
	* ld-x86-64/lea1b.d: Likewise.
	* ld-x86-64/lea1c.d: Likewise.
	* ld-x86-64/lea1d.d: Likewise.
	* ld-x86-64/lea1e.d: Likewise.
	* ld-x86-64/lea1f.d: 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.

7 files changed, 18 insertions, 0 deletions

diff --git a/ld/testsuite/ld-i386/lea1.s b/ld/testsuite/ld-i386/lea1.s
index f754ec03374..8849a38fb7a 100644
--- a/ld/testsuite/ld-i386/lea1.s
+++ b/ld/testsuite/ld-i386/lea1.s
@@ -1,3 +1,5 @@
+	.section	my_section,"aw",@progbits
+	.long	0x12345678
 	.text
 	.globl	foo
 	.type	foo, @function
@@ -9,6 +11,8 @@ foo:
 _start:
 	movl	foo@GOT(%ecx), %eax
 	movl	bar@GOT(%ecx), %eax
+	movl	__start_my_section@GOT(%ecx), %eax
+	movl	__stop_my_section@GOT(%ecx), %eax
 	.size	_start, .-_start
 	.comm	pad,4,4
 	.comm	bar,4,4
diff --git a/ld/testsuite/ld-i386/lea1a.d b/ld/testsuite/ld-i386/lea1a.d
index 0435d3495b9..d8825227008 100644
--- a/ld/testsuite/ld-i386/lea1a.d
+++ b/ld/testsuite/ld-i386/lea1a.d
@@ -11,4 +11,6 @@ Disassembly of section .text:
 #...
 [ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    -0x[a-f0-9]+\(%ecx\),%eax
 [ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
 #pass
diff --git a/ld/testsuite/ld-i386/lea1b.d b/ld/testsuite/ld-i386/lea1b.d
index 8cef2c4f64a..b3f6507d177 100644
--- a/ld/testsuite/ld-i386/lea1b.d
+++ b/ld/testsuite/ld-i386/lea1b.d
@@ -11,4 +11,6 @@ Disassembly of section .text:
 #...
 [ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    -0x[a-f0-9]+\(%ecx\),%eax
 [ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8d 81 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+\(%ecx\),%eax
 #pass
diff --git a/ld/testsuite/ld-i386/lea1c.d b/ld/testsuite/ld-i386/lea1c.d
index 54ec0deb18e..dd76258be34 100644
--- a/ld/testsuite/ld-i386/lea1c.d
+++ b/ld/testsuite/ld-i386/lea1c.d
@@ -11,4 +11,6 @@ Disassembly of section .text:
 #...
 [ 	]*[a-f0-9]+:	8d 05 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+,%eax
 [ 	]*[a-f0-9]+:	8d 05 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+,%eax
+[ 	]*[a-f0-9]+:	8d 05 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+,%eax
+[ 	]*[a-f0-9]+:	8d 05 ([0-9a-f]{2} ){4} *	lea    0x[a-f0-9]+,%eax
 #pass
diff --git a/ld/testsuite/ld-i386/mov1.s b/ld/testsuite/ld-i386/mov1.s
index c813e718b18..0ed8015e7e4 100644
--- a/ld/testsuite/ld-i386/mov1.s
+++ b/ld/testsuite/ld-i386/mov1.s
@@ -1,6 +1,10 @@
 	.text
+	.weak __start_my_section
+	.weak __stop_my_section
 	.globl	_start
 	.type	_start, @function
 _start:
 	movl	_DYNAMIC@GOT(%ecx), %eax
+	movl	__start_my_section@GOT(%ecx), %eax
+	movl	__stop_my_section@GOT(%ecx), %eax
 	.size	_start, .-_start
diff --git a/ld/testsuite/ld-i386/mov1a.d b/ld/testsuite/ld-i386/mov1a.d
index d8ce6b821f7..d189627744a 100644
--- a/ld/testsuite/ld-i386/mov1a.d
+++ b/ld/testsuite/ld-i386/mov1a.d
@@ -10,4 +10,6 @@ Disassembly of section .text:
 
 #...
 [ 	]*[a-f0-9]+:	8b 81 ([0-9a-f]{2} ){4} *	mov    -0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8b 81 ([0-9a-f]{2} ){4} *	mov    -0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[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
index 583dfc82d46..ae40862384e 100644
--- a/ld/testsuite/ld-i386/mov1b.d
+++ b/ld/testsuite/ld-i386/mov1b.d
@@ -10,4 +10,6 @@ Disassembly of section .text:
 
 #...
 [ 	]*[a-f0-9]+:	8b 81 ([0-9a-f]{2} ){4} *	mov    -0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8b 81 ([0-9a-f]{2} ){4} *	mov    -0x[a-f0-9]+\(%ecx\),%eax
+[ 	]*[a-f0-9]+:	8b 81 ([0-9a-f]{2} ){4} *	mov    -0x[a-f0-9]+\(%ecx\),%eax
 #pass