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* read.c (potable): Pass negative numbers for new .balign[wl] and

Browse Source 
.p2align[wl] pseudo-ops.
	(s_align_bytes): Treat a negative argument as specifying the fill
	length.
	(s_align_ptwo): Likewise.
This commit is contained in:
Ian Lance Taylor 1996-02-09 01:04:21 +00:00
parent 708f7fbcd3
commit 4080c27065
2 changed files with 40 additions and 21 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
Thu Feb 8 20:02:58 1996 Ian Lance Taylor <ian@cygnus.com>
* read.c (potable): Pass negative numbers for new .balign[wl] and
.p2align[wl] pseudo-ops.
(s_align_bytes): Treat a negative argument as specifying the fill
length.
(s_align_ptwo): Likewise.
Wed Feb 7 14:12:03 1996 Ian Lance Taylor <ian@cygnus.com>
* read.c (potable): Add balignw, balignl, p2alignw, and p2alignl.

53
gas/read.c
View File

@ -246,8 +246,8 @@ static const pseudo_typeS potable[] =
{"ascii", stringer, 0},
{"asciz", stringer, 1},
{"balign", s_align_bytes, 0},
{"balignw", s_align_bytes, 2},
{"balignl", s_align_bytes, 4},
{"balignw", s_align_bytes, -2},
{"balignl", s_align_bytes, -4},
/* block */
{"byte", cons, 1},
{"comm", s_comm, 0},
@ -341,8 +341,8 @@ static const pseudo_typeS potable[] =
{"offset", s_struct, 0},
{"org", s_org, 0},
{"p2align", s_align_ptwo, 0},
{"p2alignw", s_align_ptwo, 2},
{"p2alignl", s_align_ptwo, 4},
{"p2alignw", s_align_ptwo, -2},
{"p2alignl", s_align_ptwo, -4},
{"page", listing_eject, 0},
{"plen", listing_psize, 0},
{"print", s_print, 0},
@ -1100,7 +1100,12 @@ s_align_bytes (arg)
stop = mri_comment_field (&stopc);
if (is_end_of_line[(unsigned char) *input_line_pointer])
temp = arg; /* Default value from pseudo-op table */
{
if (arg < 0)
temp = 0;
else
temp = arg; /* Default value from pseudo-op table */
}
else
temp = get_absolute_expression ();
@ -1123,29 +1128,32 @@ s_align_bytes (arg)
if (*input_line_pointer == ',')
{
offsetT fillval;
int len;
input_line_pointer++;
fillval = get_absolute_expression ();
if (arg == 0)
arg = 1;
if (arg <= 1)
if (arg >= 0)
len = 1;
else
len = - arg;
if (len <= 1)
{
temp_fill = fillval;
do_align (temp, &temp_fill, arg);
do_align (temp, &temp_fill, len);
}
else
{
char ab[16];
if (arg > sizeof ab)
if (len > sizeof ab)
abort ();
md_number_to_chars (ab, fillval, arg);
do_align (temp, ab, arg);
md_number_to_chars (ab, fillval, len);
do_align (temp, ab, len);
}
}
else
{
if (arg > 0)
if (arg < 0)
as_warn ("expected fill pattern missing");
do_align (temp, (char *) NULL, 0);
}
@ -1181,29 +1189,32 @@ s_align_ptwo (arg)
if (*input_line_pointer == ',')
{
offsetT fillval;
int len;
input_line_pointer++;
fillval = get_absolute_expression ();
if (arg == 0)
arg = 1;
if (arg <= 1)
if (arg >= 0)
len = 1;
else
len = - arg;
if (len <= 1)
{
temp_fill = fillval;
do_align (temp, &temp_fill, arg);
do_align (temp, &temp_fill, len);
}
else
{
char ab[16];
if (arg > sizeof ab)
if (len > sizeof ab)
abort ();
md_number_to_chars (ab, fillval, arg);
do_align (temp, ab, arg);
md_number_to_chars (ab, fillval, len);
do_align (temp, ab, len);
}
}
else
{
if (arg > 0)
if (arg < 0)
as_warn ("expected fill pattern missing");
do_align (temp, (char *) NULL, 0);
}