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09-03-05 Christophe Lyon <christophe.lyon@st.com>

Browse Source 
bfd/
	* elf32-arm.c (group_sections): Take next section size into
	account before accepting to group it.

	testsuite/
	* ld-arm/arm-elf.exp: Add new farcall-group-limit test.
	* ld-arm/farcall-group-limit.d: New file.
	* ld-arm/farcall-group3.s: New file.
	* ld-arm/farcall-group4.s: New file.
This commit is contained in:
Christophe Lyon 2009-03-06 08:57:58 +00:00
parent f0da3b538d
commit 8cd931b713
7 changed files with 82 additions and 8 deletions
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5
bfd/ChangeLog
View File

@ -1,3 +1,8 @@
2009-03-05 Christophe Lyon <christophe.lyon@st.com>
* elf32-arm.c (group_sections): Take next section size into
account before accepting to group it.
2009-03-05 Christophe Lyon <christophe.lyon@st.com>
* elf32-arm.c (arm_type_of_stub): Handle long branches targetting

32
bfd/elf32-arm.c
View File

@ -3554,11 +3554,20 @@ group_sections (struct elf32_arm_link_hash_table *htab,
bfd_size_type total;
curr = head;
total = head->size;
while ((next = NEXT_SEC (curr)) != NULL
&& ((total += next->output_offset - curr->output_offset)
< stub_group_size))
total = 0;
while ((next = NEXT_SEC (curr)) != NULL)
{
if ( (total + next->output_offset - curr->output_offset
+ next->size)
< stub_group_size )
{
total += next->output_offset - curr->output_offset;
}
else
break;
curr = next;
}
/* OK, the size from the start to the start of CURR is less
than stub_group_size and thus can be handled by one stub
@ -3579,11 +3588,18 @@ group_sections (struct elf32_arm_link_hash_table *htab,
bytes after the stub section can be handled by it too. */
if (!stubs_always_after_branch)
{
total = 0;
while (next != NULL
&& ((total += next->output_offset - head->output_offset)
< stub_group_size))
total = head->size;
while (next != NULL)
{
if ( (total + next->output_offset - head->output_offset
+ next->size)
< stub_group_size )
{
total += next->output_offset - head->output_offset;
}
else
break;
head = next;
next = NEXT_SEC (head);
htab->stub_group[head->id].link_sec = curr;

7
ld/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2009-03-05 Christophe Lyon <christophe.lyon@st.com>
* ld-arm/arm-elf.exp: Add new farcall-group-limit test.
* ld-arm/farcall-group-limit.d: New file.
* ld-arm/farcall-group3.s: New file.
* ld-arm/farcall-group4.s: New file.
2009-03-05 Christophe Lyon <christophe.lyon@st.com>
* ld-arm/arm-elf.exp: Add 2 more tests to check long branch stubs

3
ld/testsuite/ld-arm/arm-elf.exp
View File

@ -338,6 +338,9 @@ set armeabitests {
{"Group size=2" "-Ttext 0x1000 --section-start .foo=0x2003020 --stub-group-size=2" "" {farcall-group.s farcall-group2.s}
{{objdump -d farcall-group-size2.d}}
"farcall-group-size2"}
{"Group size limit" "-Ttext 0x1000 --section-start .far=0x2003020" "" {farcall-group3.s farcall-group4.s}
{{objdump -d farcall-group-limit.d}}
"farcall-group-limit"}
{"Mixed ARM/Thumb dynamic application with farcalls" "tmpdir/mixed-lib.so -T arm-dyn.ld --section-start .far_arm=0x2100000 --section-start .far_thumb=0x2200000" ""
{farcall-mixed-app.s}

21
ld/testsuite/ld-arm/farcall-group-limit.d Normal file
View File

@ -0,0 +1,21 @@
.*: file format .*
Disassembly of section .text:
00001000 <_start>:
1000: eb000000 bl 1008 <__bar_veneer>
1004: 00000000 andeq r0, r0, r0
00001008 <__bar_veneer>:
1008: e51ff004 ldr pc, \[pc, #-4\] ; 100c <__bar_veneer\+0x4>
100c: 02003020 .word 0x02003020
00001010 <myfunc>:
...
2001010: eb000802 bl 2003020 <bar>
Disassembly of section .far:
02003020 <bar>:
2003020: e12fff1e bx lr

9
ld/testsuite/ld-arm/farcall-group3.s Normal file
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@ -0,0 +1,9 @@
@ Test to ensure that ARM calls exceeding 32Mb generate stubs,
@ and that stubs are correctly inserted between input sections
@ when one contribution size exceeds the limit.
.text
.global bar
.global _start
_start:
bl bar

13
ld/testsuite/ld-arm/farcall-group4.s Normal file
View File

@ -0,0 +1,13 @@
@ Test to ensure that ARM calls exceeding 32Mb generate stubs,
@ and that a large input section forces stub insertion before its
@ contribution.
.text
myfunc:
.space 0x2000000
bl bar
.section .far, "xa"
.global bar
bar:
bx lr