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2007-08-09 Paul Brook <paul@codesourcery.com> 

gas/
	* config/tc-arm.c (relaxed_symbol_addr): Compensate for alignment.

	gas/testsuite/
	* gas/arm/relax_load_align.d: new test.
	* gas/arm/relax_load_align.s: new test.
This commit is contained in:
Paul Brook 2007-08-09 15:11:07 +00:00
parent c309eac207
commit 4396b6862a
5 changed files with 55 additions and 1 deletions
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4
gas/ChangeLog
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@ -1,3 +1,7 @@
2007-08-09 Paul Brook <paul@codesourcery.com>
* config/tc-arm.c (relaxed_symbol_addr): Compensate for alignment.
2007-08-09 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (check_byte_reg): Support pextrb and pinsrb.

26
gas/config/tc-arm.c
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@ -16787,7 +16787,31 @@ relaxed_symbol_addr(fragS *fragp, long stretch)
if (stretch != 0
&& sym_frag->relax_marker != fragp->relax_marker)
addr += stretch;
{
fragS *f;
/* Adjust stretch for any alignment frag. Note that if have
been expanding the earlier code, the symbol may be
defined in what appears to be an earlier frag. FIXME:
This doesn't handle the fr_subtype field, which specifies
a maximum number of bytes to skip when doing an
alignment. */
for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next)
{
if (f->fr_type == rs_align || f->fr_type == rs_align_code)
{
if (stretch < 0)
stretch = - ((- stretch)
& ~ ((1 << (int) f->fr_offset) - 1));
else
stretch &= ~ ((1 << (int) f->fr_offset) - 1);
if (stretch == 0)
break;
}
}
if (f != NULL)
addr += stretch;
}
return addr;
}

5
gas/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2007-08-09 Paul Brook <paul@codesourcery.com>
* gas/arm/relax_load_align.d: new test.
* gas/arm/relax_load_align.s: new test.
2007-08-09 H.J. Lu <hongjiu.lu@intel.com>
* gas/i386/i386.exp: Run sse4_1-intel, sse4_2-intel,

9
gas/testsuite/gas/arm/relax_load_align.d Normal file
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@ -0,0 +1,9 @@
# as: -march=armv6kt2
# objdump: -dr --prefix-addresses --show-raw-insn
.*: +file format .*arm.*
Disassembly of section .text:
0+000 <[^>]+> f510 707a adds.w r0, r0, #1000 ; 0x3e8
0+004 <[^>]+> 4800 ldr r0, \[pc, #0\] \(0+008 <[^>]+>\)
0+006 <[^>]+> 4800 ldr r0, \[pc, #0\] \(0+008 <[^>]+>\)

12
gas/testsuite/gas/arm/relax_load_align.s Normal file
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@ -0,0 +1,12 @@
@ The relaxation algorithm used to not compensate for alignment statements.
@ The early termination to avoid infinite looping would make the second load
@ a wide instruction.
.text
.thumb
.syntax unified
fn:
adds r0, r0, #1000
ldr r0, 1f
ldr r0, 1f
.align 2
1: