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| author | Alan Modra <amodra@gmail.com> | 2010-10-25 03:03:18 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2010-10-25 03:03:18 +0000 |
| commit | e5940dffc561e32e0fa15b964a33aa3a7477237f (patch) | |
| tree | 4f858d4004d85e5a1e153d2b5fd666305d00fe5f | |
| parent | 4073872ae32047a09f2c417fbb060df58bdef6e4 (diff) | |
| download | gdb-e5940dffc561e32e0fa15b964a33aa3a7477237f.zip gdb-e5940dffc561e32e0fa15b964a33aa3a7477237f.tar.gz gdb-e5940dffc561e32e0fa15b964a33aa3a7477237f.tar.bz2 | |
PR gas/12049
* write.c (relax_frag): Don't allow forward branches to temporarily
becomde backward branches.
| -rw-r--r-- | gas/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/write.c | 7 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index b3fb625..020f927 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,9 @@ +2010-10-25 Alan Modra <amodra@gmail.com> + + PR gas/12049 + * write.c (relax_frag): Don't allow forward branches to temporarily + becomde backward branches. + 2010-10-23 Mark Mitchell <mark@codesourcery.com> * config/obj-elf.c (elf_adjust_symtab): New. Move group section diff --git a/gas/write.c b/gas/write.c index 080216a..4b6592f 100644 --- a/gas/write.c +++ b/gas/write.c @@ -2163,6 +2163,13 @@ relax_frag (segT segment, fragS *fragP, long stretch) if (stretch < 0 || sym_frag->region == fragP->region) target += stretch; + /* If we get here we know we have a forward branch. This + relax pass may have stretched previous instructions so + far that omitting STRETCH would make the branch + negative. Don't allow this in case the negative reach is + large enough to require a larger branch instruction. */ + else if (target < address) + target = fragP->fr_next->fr_address + stretch; } } |