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* Fix for PR 16389, brought over from d30v branch.

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Thu Jul 30 21:38:43 1998  Frank Ch. Eigler  <fche@cygnus.com>
	* config/tc-d30v.c ({cur,prev}_left_kills_right_p): New variables.
	(write_2_short): Emit warning if new flag is set.
	(do_assemble): Set flags if left instruction is one of special
	"right-instruction-killer" type.
This commit is contained in:
Frank Ch. Eigler 1998-07-30 19:41:18 +00:00
parent 2c5d6bf41b
commit e21cafde4e
2 changed files with 77 additions and 2 deletions
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14
gas/ChangeLog
View File

@ -1,3 +1,17 @@
Thu Jul 30 21:38:43 1998 Frank Ch. Eigler <fche@cygnus.com>
* config/tc-d30v.c ({cur,prev}_left_kills_right_p): New variables.
(write_2_short): Emit warning if new flag is set.
(do_assemble): Set flags if left instruction is one of special
"right-instruction-killer" type.
Tue Jun 28 18:12:28 1998 Stan Cox <scox@cygnus.com>
* config/tc-sparc.c (md_number_to_chars, cons_fix_new_sparc):
Always output words in debug_info section as big endian.
(sparc_target_format): Choose correct bfd target.
(md_apply_fix3): Rename BFD_RELOC_SPARC_32LE to BFD_RELOC_SPARC_REV32.
Tue Jul 28 11:01:21 1998 Jeffrey A Law (law@cygnus.com)
* config/tc-mn10300.c (md_assemble): Fix "errmsg" initialization

65
gas/config/tc-d30v.c
View File

@ -83,6 +83,11 @@ static int prev_mul32_p = 0;
static int flag_explicitly_parallel = 0;
static int flag_xp_state = 0;
/* Whether current and previous left sub-instruction disables
execution of right sub-instruction. */
static int cur_left_kills_right_p = 0;
static int prev_left_kills_right_p = 0;
/* The known current alignment of the current section. */
static int d30v_current_align;
static segT d30v_current_align_seg;
@ -223,6 +228,16 @@ check_range (num, bits, flags)
if (bits == 32)
return 0;
if (flags & OPERAND_SHIFT)
{
/* We know that all shifts are right by three bits.... */
if (flags & OPERAND_SIGNED)
num = (unsigned long) (((/*signed*/ long) num) >> 3);
else
num >>= 3;
}
if (flags & OPERAND_SIGNED)
{
max = (1 << (bits - 1))-1;
@ -770,6 +785,10 @@ write_2_short (opcode1, insn1, opcode2, insn2, exec_type, fx)
case EXEC_SEQ: /* sequential */
if (opcode1->op->unit == IU)
as_fatal (_("IU instruction may not be in the left container"));
if (prev_left_kills_right_p)
as_warn (_("special left instruction `%s' kills instruction "
"`%s' in right container"),
opcode1->op->name, opcode2->op->name);
insn = FM01 | (insn1 << 32) | insn2;
fx = fx->next;
break;
@ -1404,6 +1423,45 @@ do_assemble (str, opcode, shortp, is_parallel)
}
}
/* Propagate left_kills_right status */
if (insn != -1)
{
prev_left_kills_right_p = cur_left_kills_right_p;
if (opcode->op->flags_set & FLAG_LKR)
{
cur_left_kills_right_p = 1;
if (strcmp (opcode->op->name, "mvtsys") == 0)
{
/* Left kills right for only mvtsys only for PSW/PSWH/PSWL/flags target. */
if ((myops[0].X_op == O_register) &&
((myops[0].X_add_number == OPERAND_CONTROL) || /* psw */
(myops[0].X_add_number == OPERAND_CONTROL+MAX_CONTROL_REG+2) || /* pswh */
(myops[0].X_add_number == OPERAND_CONTROL+MAX_CONTROL_REG+1) || /* pswl */
(myops[0].X_add_number == OPERAND_FLAG+0) || /* f0 */
(myops[0].X_add_number == OPERAND_FLAG+1) || /* f1 */
(myops[0].X_add_number == OPERAND_FLAG+2) || /* f2 */
(myops[0].X_add_number == OPERAND_FLAG+3) || /* f3 */
(myops[0].X_add_number == OPERAND_FLAG+4) || /* f4 */
(myops[0].X_add_number == OPERAND_FLAG+5) || /* f5 */
(myops[0].X_add_number == OPERAND_FLAG+6) || /* f6 */
(myops[0].X_add_number == OPERAND_FLAG+7))) /* f7 */
{
cur_left_kills_right_p = 1;
}
else
{
/* Other mvtsys target registers don't kill right instruction. */
cur_left_kills_right_p = 0;
}
} /* mvtsys */
}
else
cur_left_kills_right_p = 0;
}
return (insn);
}
@ -1859,8 +1917,11 @@ d30v_align (n, pfill, label)
temporarily when -g is in effect. */
int switched_seg_p = (d30v_current_align_seg != now_seg);
if (d30v_current_align >= n && !switched_seg_p)
return;
/* Do not assume that if 'd30v_current_align >= n' and
'! switched_seg_p' that it is safe to avoid performing
this alignement request. The alignment of the current frag
can be changed under our feet, for example by a .ascii
directive in the source code. cf testsuite/gas/d30v/reloc.s */
d30v_cleanup ();