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2004-03-02 H.J. Lu <hongjiu.lu@intel.com>

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* config/tc-ia64.c (align_frag): New.
	(md_assemble): Set the tc_frag_data field in align_frag for
	IA64_OPCODE_FIRST instructions.
	(ia64_md_do_align): Set align_frag.
	(ia64_handle_align): Add a stop bit if needed.

	* config/tc-ia64.h (TC_FRAG_TYPE): New.
	(TC_FRAG_INIT): New.
This commit is contained in:
H.J. Lu 2004-03-03 04:37:38 +00:00
parent 284a7efdbe
commit 9545c4ce85
3 changed files with 46 additions and 2 deletions
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11
gas/ChangeLog
View file

@ -1,3 +1,14 @@
2004-03-02 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-ia64.c (align_frag): New.
(md_assemble): Set the tc_frag_data field in align_frag for
IA64_OPCODE_FIRST instructions.
(ia64_md_do_align): Set align_frag.
(ia64_handle_align): Add a stop bit if needed.
* config/tc-ia64.h (TC_FRAG_TYPE): New.
(TC_FRAG_INIT): New.
2004-03-01 Richard Sandiford <rsandifo@redhat.com>
* config/tc-frv.c (fr400_audio): New variable.

31
gas/config/tc-ia64.c
View file

@ -636,6 +636,9 @@ static struct gr {
valueT value;
} gr_values[128] = {{ 1, 0, 0 }};
/* Remember the alignment frag. */
static fragS *align_frag;
/* These are the routines required to output the various types of
unwind records. */
@ -9990,7 +9993,24 @@ md_assemble (str)
flags = idesc->flags;
if ((flags & IA64_OPCODE_FIRST) != 0)
{
/* The alignment frag has to end with a stop bit only if the
next instruction after the alignment directive has to be
the first instruction in an instruction group. */
if (align_frag)
{
while (align_frag->fr_type != rs_align_code)
{
align_frag = align_frag->fr_next;
assert (align_frag);
}
if (align_frag->fr_next == frag_now)
align_frag->tc_frag_data = 1;
}
insn_group_break (1, 0, 0);
}
align_frag = NULL;
if ((flags & IA64_OPCODE_NO_PRED) != 0 && qp_regno != 0)
{
@ -10808,6 +10828,8 @@ ia64_md_do_align (n, fill, len, max)
int len ATTRIBUTE_UNUSED;
int max ATTRIBUTE_UNUSED;
{
/* The current frag is an alignment frag. */
align_frag = frag_now;
if (subseg_text_p (now_seg))
ia64_flush_insns ();
}
@ -10823,13 +10845,20 @@ ia64_handle_align (fragp)
static const unsigned char le_nop[]
= { 0x0c, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00};
static const unsigned char le_nop_stop[]
= { 0x0d, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00};
int bytes;
char *p;
const unsigned char *nop;
if (fragp->fr_type != rs_align_code)
return;
/* Check if this frag has to end with a stop bit. */
nop = fragp->tc_frag_data ? le_nop_stop : le_nop;
bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix;
p = fragp->fr_literal + fragp->fr_fix;
@ -10845,7 +10874,7 @@ ia64_handle_align (fragp)
}
/* Instruction bundles are always little-endian. */
memcpy (p, le_nop, 16);
memcpy (p, nop, 16);
fragp->fr_var = 16;
}

4
gas/config/tc-ia64.h
View file

@ -155,6 +155,10 @@ extern void ia64_convert_frag (fragS *);
#define TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset
#define tc_check_label(l) ia64_check_label (l)
/* Record if an alignment frag should end with a stop bit. */
#define TC_FRAG_TYPE int
#define TC_FRAG_INIT(FRAGP) do {(FRAGP)->tc_frag_data = 0;}while (0)
#define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
#define WORKING_DOT_WORD /* don't do broken word processing for now */