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* write.c (relax_align): Add extra padding for linkrelax only if

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LINKER_RELAXING_SHRINKS_ONLY is defined.
* config/tc-i960.h (LINKER_RELAXING_SHRINKS_ONLY): Define it.
* doc/internals.texi (Relaxation): Write up some stuff on linker relaxing and
LINKER_RELAXING_SHRINKS_ONLY.
This commit is contained in:
Ken Raeburn
1995-08-08 06:54:30 +00:00
parent 3a1902f1f0
commit d4083e293a
2 changed files with 30 additions and 3 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
Tue Aug 8 02:31:38 1995 Ken Raeburn <raeburn@cygnus.com>
* write.c (relax_align): Add extra padding for linkrelax only if
LINKER_RELAXING_SHRINKS_ONLY is defined.
* config/tc-i960.h (LINKER_RELAXING_SHRINKS_ONLY): Define it.
* doc/internals.texi (Relaxation): Write up some stuff on linker
relaxing and LINKER_RELAXING_SHRINKS_ONLY.
Mon Aug 7 17:18:10 1995 Ian Lance Taylor <ian@cygnus.com>
* config/m68k-parse.y: New file: bison grammar for m68k operands,

25
gas/write.c
View File

@ -413,8 +413,9 @@ cvt_frag_to_fill (sec, fragP)
fragS *fragP;
#else
static void
cvt_frag_to_fill (headersP, fragP)
cvt_frag_to_fill (headersP, sec, fragP)
object_headers *headersP;
segT sec;
fragS *fragP;
#endif
{
@ -446,7 +447,7 @@ cvt_frag_to_fill (headersP, fragP)
#ifdef BFD_ASSEMBLER
md_convert_frag (stdoutput, sec, fragP);
#else
md_convert_frag (headersP, fragP);
md_convert_frag (headersP, sec, fragP);
#endif
assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix));
@ -639,6 +640,13 @@ adjust_reloc_syms (abfd, sec, xxx)
|| bfd_is_com_section (symsec))
{
fixp->fx_addsy->sy_used_in_reloc = 1;
#ifdef UNDEFINED_DIFFERENCE_OK
/* We have the difference of an undefined symbol and some
other symbol. Make sure to mark the other symbol as used
in a relocation so that it will always be output. */
if (fixp->fx_subsy)
fixp->fx_subsy->sy_used_in_reloc = 1;
#endif
goto done;
}
@ -1309,7 +1317,7 @@ write_object_file ()
for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
{
cvt_frag_to_fill (&headers, fragP);
cvt_frag_to_fill (&headers, SEG_TEXT, fragP);
/* Some assert macros don't work with # directives mixed in. */
#ifndef NDEBUG
@ -1725,10 +1733,12 @@ relax_align (address, alignment)
mask = ~((~0) << alignment);
new_address = (address + mask) & (~mask);
#ifdef LINKER_RELAXING_SHRINKS_ONLY
if (linkrelax)
/* We must provide lots of padding, so the linker can discard it
when needed. The linker will not add extra space, ever. */
new_address += (1 << alignment);
#endif
return (new_address - address);
}
@ -2223,6 +2233,15 @@ fixup_segment (fixP, this_segment_type)
fixP->fx_subsy = 0;
}
#endif
#ifdef UNDEFINED_DIFFERENCE_OK
/* The PA needs this for PIC code generation. We basically
don't want to do anything if we have the difference of two
symbols at this point. */
else if (1)
{
/* Leave it alone. */
}
#endif
#ifdef BFD_ASSEMBLER
else if (fixP->fx_r_type == BFD_RELOC_GPREL32
|| fixP->fx_r_type == BFD_RELOC_GPREL16)