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* config/tc-hppa.c (hppa_fix_adjustable): Reject reductions for

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symbols in DLT relative relocs.
	(tc_gen_reloc): Zero out the addend field for DLT relative relocs.
This commit is contained in:
Jeff Law 1994-07-07 17:35:27 +00:00
parent fd4913f196
commit 8fd04cbacc
2 changed files with 42 additions and 2 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
Thu Jul 7 11:31:32 1994 Jeff Law (law@snake.cs.utah.edu)
* config/tc-hppa.c (hppa_fix_adjustable): Reject reductions for
symbols in DLT relative relocs.
(tc_gen_reloc): Zero out the addend field for DLT relative relocs.
Wed Jul 6 01:07:54 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* config/tc-ppc.c (ppc_tc): If not OBJ_COFF, force TOC entry to

38
gas/config/tc-hppa.c
View File

@ -2626,6 +2626,9 @@ tc_gen_reloc (section, fixp)
/* Now, do any processing that is dependent on the relocation type. */
switch (code)
{
case R_PARISC_DLTREL21L:
case R_PARISC_DLTREL14R:
case R_PARISC_DLTREL14F:
case R_PARISC_PLABEL32:
case R_PARISC_PLABEL21L:
case R_PARISC_PLABEL14R:
@ -2633,7 +2636,11 @@ tc_gen_reloc (section, fixp)
relocation should be either 0 (no static link) or 2
(static link required).
FIXME: We always assume no static link! */
FIXME: We always assume no static link!
We also slam a zero addend into the DLT relative relocs;
it doesn't make a lot of sense to use any addend since
it gets you a different (eg unknown) DLT entry. */
reloc->addend = 0;
break;
@ -2673,13 +2680,18 @@ tc_gen_reloc (section, fixp)
relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
break;
case R_DLT_REL:
case R_DATA_PLABEL:
case R_CODE_PLABEL:
/* For plabel relocations, the addend of the
relocation should be either 0 (no static link) or 2
(static link required).
FIXME: We always assume no static link! */
FIXME: We always assume no static link!
We also slam a zero addend into the DLT relative relocs;
it doesn't make a lot of sense to use any addend since
it gets you a different (eg unknown) DLT entry. */
relocs[i]->addend = 0;
break;
@ -6138,6 +6150,20 @@ pa_text (unused)
adjusted. This so that the linker can know when/how to create argument
relocation stubs for indirect calls and calls to static functions.
"T" field selectors create DLT relative fixups for accessing
globals and statics in PIC code; each DLT relative fixup creates
an entry in the DLT table. The entries contain the address of
the final target (eg accessing "foo" would create a DLT entry
with the address of "foo").
Unfortunately, the HP linker doesn't take into account any addend
when generating the DLT; so accessing $LIT$+8 puts the address of
$LIT$ into the DLT rather than the address of $LIT$+8.
The end result is we can't perform relocation symbol reductions for
any fixup which creates entries in the DLT (eg they use "T" field
selectors).
FIXME. Also reject R_HPPA relocations which are 32 bits
wide. Helps with code lables in arrays for SOM. (SOM BFD code
needs to generate relocations to push the addend and symbol value
@ -6152,9 +6178,17 @@ hppa_fix_adjustable (fixp)
hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
/* Reject reductions of symbols in 32bit plabel relocs. */
if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
return 0;
/* Reject reductions of symbols in DLT relative relocs. */
if (hppa_fix->fx_r_field == e_tsel
|| hppa_fix->fx_r_field == e_ltsel
|| hppa_fix->fx_r_field == e_rtsel)
return 0;
/* Reject reductions of function symbols. */
if (fixp->fx_addsy == 0
|| (fixp->fx_addsy->bsym->flags & BSF_FUNCTION) == 0)
return 1;