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Look for register conflicts on stores as well as loads.

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This commit is contained in:
Nick Clifton 1999-08-16 17:47:29 +00:00
parent 8535d39cc8
commit 114502711b
2 changed files with 22 additions and 18 deletions
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5
gas/ChangeLog
View File

@ -1,3 +1,8 @@
1999-08-16 Nick Clifton <nickc@cygnus.com>
* config/tc-arm.c (do_ldst): Look for register conflicts on stores
as well as loads.
1999-08-13 Nick Clifton <nickc@cygnus.com>
* config/tc-arm.c (validate_offset_imm): Work on unsigned values.

35
gas/config/tc-arm.c
View File

@ -2853,22 +2853,23 @@ do_ldst (str, flags)
if ((reg = reg_required_here (&str, 16)) == FAIL)
return;
conflict_reg = (((conflict_reg == reg)
&& (inst.instruction & LOAD_BIT))
? 1 : 0);
/* Conflicts can occur on stores as well as loads. */
conflict_reg = (conflict_reg == reg);
skip_whitespace (str);
if (*str == ']')
{
str++;
str ++;
if (skip_past_comma (&str) == SUCCESS)
{
/* [Rn],... (post inc) */
if (ldst_extend (&str, halfword) == FAIL)
return;
if (conflict_reg)
as_warn (_("destination register same as write-back base\n"));
as_warn (_("%s register same as write-back base"),
(inst.instruction & LOAD_BIT) ? _("destination") : _("source") );
}
else
{
@ -2881,7 +2882,8 @@ do_ldst (str, flags)
if (*str == '!')
{
if (conflict_reg)
as_warn (_("destination register same as write-back base\n"));
as_warn (_("%s register same as write-back base"),
(inst.instruction & LOAD_BIT) ? _("destination") : _("source") );
str++;
inst.instruction |= WRITE_BACK;
}
@ -2917,7 +2919,8 @@ do_ldst (str, flags)
if (*str == '!')
{
if (conflict_reg)
as_tsktsk (_("destination register same as write-back base\n"));
as_warn (_("%s register same as write-back base"),
(inst.instruction & LOAD_BIT) ? _("destination") : _("source") );
str++;
inst.instruction |= WRITE_BACK;
}
@ -5340,7 +5343,7 @@ md_apply_fix3 (fixP, val, seg)
&& (newimm = negate_data_op (&temp, value)) == (unsigned int) FAIL)
{
as_bad_where (fixP->fx_file, fixP->fx_line,
_("invalid constant (%lx) after fixup\n"),
_("invalid constant (%lx) after fixup"),
(unsigned long) value);
break;
}
@ -5374,7 +5377,7 @@ md_apply_fix3 (fixP, val, seg)
else
{
as_bad_where (fixP->fx_file, fixP->fx_line,
_("Unable to compute ADRL instructions for PC offset of 0x%x\n"), value);
_("Unable to compute ADRL instructions for PC offset of 0x%x"), value);
break;
}
@ -5422,7 +5425,7 @@ md_apply_fix3 (fixP, val, seg)
{
if (fixP->fx_r_type == BFD_RELOC_ARM_HWLITERAL)
as_bad_where (fixP->fx_file, fixP->fx_line,
_("invalid literal constant: pool needs to be closer\n"));
_("invalid literal constant: pool needs to be closer"));
else
as_bad (_("bad immediate value for half-word offset (%ld)"), (long) value);
break;
@ -5443,7 +5446,7 @@ md_apply_fix3 (fixP, val, seg)
if (validate_offset_imm (value, 0) == FAIL)
{
as_bad_where (fixP->fx_file, fixP->fx_line,
_("invalid literal constant: pool needs to be closer\n"));
_("invalid literal constant: pool needs to be closer"));
break;
}
@ -5797,7 +5800,7 @@ md_apply_fix3 (fixP, val, seg)
case BFD_RELOC_NONE:
default:
as_bad_where (fixP->fx_file, fixP->fx_line,
_("Bad relocation fixup type (%d)\n"), fixP->fx_r_type);
_("Bad relocation fixup type (%d)"), fixP->fx_r_type);
}
return 1;
@ -6217,13 +6220,9 @@ _("Warning: Use of the 'nv' conditional is deprecated\n"));
if (reg == FAIL)
{
if (regnum != FAIL)
{
insert_reg_alias (str, regnum);
}
insert_reg_alias (str, regnum);
else
{
as_warn (_("register '%s' does not exist\n"), q);
}
as_warn (_("register '%s' does not exist"), q);
}
else if (regnum != FAIL)
{