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| author | Paul Brook <paul@codesourcery.com> | 2007-08-09 15:11:07 +0000 |
|---|---|---|
| committer | Paul Brook <paul@codesourcery.com> | 2007-08-09 15:11:07 +0000 |
| commit | 4396b6862a60b1add68552ddac6b8d68513e51e8 (patch) | |
| tree | b3067ab462af1852ae9dcc78e489a7e20d524769 | |
| parent | c309eac2074a11c52d122e543d197103c6020f6c (diff) | |
| download | gdb-4396b6862a60b1add68552ddac6b8d68513e51e8.zip gdb-4396b6862a60b1add68552ddac6b8d68513e51e8.tar.gz gdb-4396b6862a60b1add68552ddac6b8d68513e51e8.tar.bz2 | |
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.
| -rw-r--r-- | gas/ChangeLog | 4 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 26 | ||||
| -rw-r--r-- | gas/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gas/testsuite/gas/arm/relax_load_align.d | 9 | ||||
| -rw-r--r-- | gas/testsuite/gas/arm/relax_load_align.s | 12 |
5 files changed, 55 insertions, 1 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index ba546c4..8818688 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -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. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 82562d7..117fe16 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -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; } diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog index 60be6e6..1bbbec1 100644 --- a/gas/testsuite/ChangeLog +++ b/gas/testsuite/ChangeLog @@ -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, diff --git a/gas/testsuite/gas/arm/relax_load_align.d b/gas/testsuite/gas/arm/relax_load_align.d new file mode 100644 index 0000000..0147b49 --- /dev/null +++ b/gas/testsuite/gas/arm/relax_load_align.d @@ -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, \[pc, #0\] \(0+008 <[^>]+>\) diff --git a/gas/testsuite/gas/arm/relax_load_align.s b/gas/testsuite/gas/arm/relax_load_align.s new file mode 100644 index 0000000..e461291 --- /dev/null +++ b/gas/testsuite/gas/arm/relax_load_align.s @@ -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: |