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Accept an absolute expression for index scale factor.

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This commit is contained in:
Alan Modra
2001-03-25 05:57:09 +00:00
parent 0f17484fd3
commit 551c1ca176
2 changed files with 29 additions and 16 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
2001-03-25 Alan Modra <alan@linuxcare.com.au>
* config/tc-i386.c (i386_scale): Accept an absolute expression for
scale factor, and return the end of the expression.
(i386_operand): Modify for above.
2001-03-23 Nick Clifton <nickc@redhat.com> 2001-03-23 Nick Clifton <nickc@redhat.com>
* doc/as.texinfo: Document --listing-XXX command line switches. * doc/as.texinfo: Document --listing-XXX command line switches.

39
gas/config/tc-i386.c
View File

@ -3344,35 +3344,38 @@ i386_immediate (imm_start)
return 1; return 1;
} }
static int i386_scale PARAMS ((char *)); static char *i386_scale PARAMS ((char *));
static int static char *
i386_scale (scale) i386_scale (scale)
char *scale; char *scale;
{ {
if (!isdigit (*scale)) offsetT val;
goto bad_scale; char *save = input_line_pointer;
switch (*scale) input_line_pointer = scale;
val = get_absolute_expression ();
switch (val)
{ {
case '0': case 0:
case '1': case 1:
i.log2_scale_factor = 0; i.log2_scale_factor = 0;
break; break;
case '2': case 2:
i.log2_scale_factor = 1; i.log2_scale_factor = 1;
break; break;
case '4': case 4:
i.log2_scale_factor = 2; i.log2_scale_factor = 2;
break; break;
case '8': case 8:
i.log2_scale_factor = 3; i.log2_scale_factor = 3;
break; break;
default: default:
bad_scale:
as_bad (_("expecting scale factor of 1, 2, 4, or 8: got `%s'"), as_bad (_("expecting scale factor of 1, 2, 4, or 8: got `%s'"),
scale); scale);
return 0; input_line_pointer = save;
return NULL;
} }
if (i.log2_scale_factor != 0 && ! i.index_reg) if (i.log2_scale_factor != 0 && ! i.index_reg)
{ {
@ -3382,7 +3385,9 @@ i386_scale (scale)
i.log2_scale_factor = 0; i.log2_scale_factor = 0;
#endif #endif
} }
return 1; scale = input_line_pointer;
input_line_pointer = save;
return scale;
} }
static int i386_displacement PARAMS ((char *, char *)); static int i386_displacement PARAMS ((char *, char *));
@ -3830,12 +3835,14 @@ i386_operand (operand_string)
} }
/* Check for scale factor. */ /* Check for scale factor. */
if (isdigit ((unsigned char) *base_string)) if (*base_string != ')')
{ {
if (!i386_scale (base_string)) char *end_scale = i386_scale (base_string);
if (!end_scale)
return 0; return 0;
++base_string; base_string = end_scale;
if (is_space_char (*base_string)) if (is_space_char (*base_string))
++base_string; ++base_string;
if (*base_string != ')') if (*base_string != ')')