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2008-06-03 Christophe Lyon <christophe.lyon@st.com>

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bfd/
	* elf32-arm.c (arm_stub_is_thumb): Define.
	(elf32_arm_final_link_relocate): Handle near mode switching stubs.

	ld/testsuite/
	* ld-arm/farcall-thumb-thumb-m.d: Fix branch type.
	* ld-arm/farcall-thumb-arm.d: Likewise.
This commit is contained in:
Daniel Jacobowitz
2008-06-09 14:53:13 +00:00
parent 2424f30373
commit f4ac848464
5 changed files with 39 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
bfd/ChangeLog
View File

@ -1,3 +1,8 @@
2008-06-09 Christophe Lyon <christophe.lyon@st.com>
* elf32-arm.c (arm_stub_is_thumb): Define.
(elf32_arm_final_link_relocate): Handle near mode switching stubs.
2008-06-07 Alan Modra <amodra@bigpond.net.au> 2008-06-07 Alan Modra <amodra@bigpond.net.au>
* elf32-spu.c (spu_elf_auto_overlay): Add valid area below sp * elf32-spu.c (spu_elf_auto_overlay): Add valid area below sp

30
bfd/elf32-arm.c
View File

@ -2713,6 +2713,23 @@ using_thumb2 (struct elf32_arm_link_hash_table *globals)
return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
} }
static bfd_boolean
arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
{
switch (stub_type)
{
case arm_thumb_thumb_stub_long_branch:
case arm_thumb_arm_v4t_stub_long_branch:
return TRUE;
case arm_stub_none:
BFD_FAIL ();
return FALSE;
break;
default:
return FALSE;
}
}
/* Determine the type of stub needed, if any, for a call. */ /* Determine the type of stub needed, if any, for a call. */
static enum elf32_arm_stub_type static enum elf32_arm_stub_type
@ -6426,7 +6443,8 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto,
|| ||
(thumb2 (thumb2
&& (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
|| (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))) || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
|| ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
{ {
/* The target is out of reach or we are changing modes, so /* The target is out of reach or we are changing modes, so
redirect the branch to the local stub for this redirect the branch to the local stub for this
@ -6439,8 +6457,14 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto,
+ stub_entry->stub_sec->output_offset + stub_entry->stub_sec->output_offset
+ stub_entry->stub_sec->output_section->vma); + stub_entry->stub_sec->output_section->vma);
/* This call becomes a call to Arm for sure. Force BLX. */ /* If this call becomes a call to Arm, force BLX. */
lower_insn = (lower_insn & ~0x1000) | 0x0800; if (globals->use_blx)
{
if ((stub_entry
&& !arm_stub_is_thumb (stub_entry->stub_type))
|| (sym_flags != STT_ARM_TFUNC))
lower_insn = (lower_insn & ~0x1000) | 0x0800;
}
} }
} }

5
ld/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2008-06-09 Christophe Lyon <christophe.lyon@st.com>
* ld-arm/farcall-thumb-thumb-m.d: Fix branch type.
* ld-arm/farcall-thumb-arm.d: Likewise.
2008-05-31 Nick Clifton <nickc@redhat.com> 2008-05-31 Nick Clifton <nickc@redhat.com>
PR ld/6430 PR ld/6430

2
ld/testsuite/ld-arm/farcall-thumb-arm.d
View File

@ -12,7 +12,7 @@ Disassembly of section .text:
... ...
00001018 <_start>: 00001018 <_start>:
1018: f7ff eff2 blx 1000 <_start-0x18> 1018: f7ff fff2 bl 1000 <_start-0x18>
Disassembly of section .foo: Disassembly of section .foo:
02001014 <bar>: 02001014 <bar>:

2
ld/testsuite/ld-arm/farcall-thumb-thumb-m.d
View File

@ -12,7 +12,7 @@ Disassembly of section .text:
100c: 02001015 .word 0x02001015 100c: 02001015 .word 0x02001015
00001010 <_start>: 00001010 <_start>:
1010: f7ff eff6 blx 1000 <_start-0x10> 1010: f7ff fff6 bl 1000 <_start-0x10>
Disassembly of section .foo: Disassembly of section .foo:
02001014 <bar>: 02001014 <bar>: