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* config/tc-m68k.c (md_apply_fix_2): Error if a short branch uses

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an illegal offset of 0 or -1.
This commit is contained in:
Ian Lance Taylor 1993-10-26 21:58:41 +00:00
parent 56a2f3410f
commit f3751617c3
2 changed files with 14 additions and 1 deletions
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3
gas/ChangeLog
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@ -1,5 +1,8 @@
Tue Oct 26 16:58:36 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* config/tc-m68k.c (md_apply_fix_2): Error if a short branch uses
an illegal offset of 0 or -1.
* config/obj-elf.c (obj_elf_init_stab_section): Align .stab
section to a longword boundary.

12
gas/config/tc-m68k.c
View File

@ -4032,7 +4032,17 @@ md_apply_fix_2 (fixP, val)
upper_limit = upper_limit * 2 + 1;
if ((unsigned) val > upper_limit && (val > 0 || val < lower_limit))
as_bad ("value out of range");
as_bad_where (fixP->fx_file, fixP->fx_line, "value out of range");
/* A one byte PC-relative reloc means a short branch. We can't use
a short branch with a value of 0 or -1, because those indicate
different opcodes (branches with longer offsets). */
if (fixP->fx_pcrel
&& fixP->fx_size == 1
&& (fixP->fx_addsy == NULL
|| S_IS_DEFINED (fixP->fx_addsy))
&& (val == 0 || val == -1))
as_bad_where (fixP->fx_file, fixP->fx_line, "invalid byte branch offset");
}
#ifdef BFD_ASSEMBLER