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New preprocessor options.

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This commit is contained in:
Timothy Wall 2000-02-10 21:00:10 +00:00
parent 84dcfba7a2
commit f28e8eb3fd
3 changed files with 53 additions and 3 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
2000-02-10 Timothy Wall <twall@redhat.com>
* app.c (do_scrub_chars): Handle "||" for parallel instructions
when DOUBLEBAR_PARALLEL is defined. Avoid stripping whitespace
around colons when KEEP_WHITE_AROUND_COLON is defined.
* doc/internals.texi (CPU backend): Document DOUBLEBAR_PARALLEL
and KEEP_WHITE_AROUND_COLON.
2000-02-08 Timothy Wall <twall@redhat.com>
* read.c (s_rept): Call do_repeat, which abstracts the repeat

28
gas/app.c
View File

@ -68,6 +68,9 @@ static const char symbol_chars[] =
#define LEX_IS_DOUBLEDASH_1ST 12
#endif
#ifdef TC_M32R
#define DOUBLEBAR_PARALLEL
#endif
#ifdef DOUBLEBAR_PARALLEL
#define LEX_IS_DOUBLEBAR_1ST 13
#endif
#define IS_SYMBOL_COMPONENT(c) (lex[c] == LEX_IS_SYMBOL_COMPONENT)
@ -174,7 +177,7 @@ do_scrub_begin (m68k_mri)
#ifdef TC_V850
lex['-'] = LEX_IS_DOUBLEDASH_1ST;
#endif
#ifdef TC_M32R
#ifdef DOUBLEBAR_PARALLEL
lex['|'] = LEX_IS_DOUBLEBAR_1ST;
#endif
#ifdef TC_D30V
@ -351,7 +354,7 @@ do_scrub_chars (get, tostart, tolen)
#ifdef TC_V850
12: After seeing a dash, looking for a second dash as a start of comment.
#endif
#ifdef TC_M32R
#ifdef DOUBLEBAR_PARALLEL
13: After seeing a vertical bar, looking for a second vertical bar as a parallel expression seperator.
#endif
*/
@ -761,6 +764,21 @@ do_scrub_chars (get, tostart, tolen)
break;
}
#ifdef KEEP_WHITE_AROUND_COLON
if (lex[ch] == LEX_IS_COLON)
{
/* only keep this white if there's no white *after* the colon */
ch2 = GET ();
UNGET (ch2);
if (!IS_WHITESPACE (ch2))
{
state = 9;
UNGET (ch);
PUT (' ');
break;
}
}
#endif
if (IS_COMMENT (ch)
|| ch == '/'
|| IS_LINE_SEPARATOR (ch))
@ -970,10 +988,14 @@ do_scrub_chars (get, tostart, tolen)
#endif
case LEX_IS_COLON:
#ifdef KEEP_WHITE_AROUND_COLON
state = 9;
#else
if (state == 9 || state == 10)
state = 3;
else if (state != 3)
state = 1;
#endif
PUT (ch);
break;
@ -1013,7 +1035,7 @@ do_scrub_chars (get, tostart, tolen)
PUT ('\n');
break;
#endif
#ifdef TC_M32R
#ifdef DOUBLEBAR_PARALLEL
case LEX_IS_DOUBLEBAR_1ST:
ch2 = GET();
if (ch2 != '|')

20
gas/doc/internals.texi
View File

@ -994,6 +994,11 @@ is a label, even if it does not have a colon.
You may define this macro to control what GAS considers to be a label. The
default definition is to accept any name followed by a colon character.
@item TC_START_LABEL_WITHOUT_COLON
@cindex TC_START_LABEL_WITHOUT_COLON
Same as TC_START_LABEL, but should be used instead of TC_START_LABEL when
LABELS_WITHOUT_COLONS is defined.
@item NO_PSEUDO_DOT
@cindex NO_PSEUDO_DOT
If you define this macro, GAS will not require pseudo-ops to start with a
@ -1224,6 +1229,21 @@ If you define this macro, GAS will call it each time a label is defined.
GAS will call this function for each section at the end of the assembly, to
permit the CPU backend to adjust the alignment of a section.
@item DOUBLEBAR_PARALLEL
@cindex DOUBLEBAR_PARALLEL
Affects the preprocessor so that lines containing '||' don't have their
whitespace stripped following the double bar. This is useful for targets that
implement parallel instructions.
@item KEEP_WHITE_AROUND_COLON
@cindex KEEP_WHITE_AROUND_COLON
Normally, whitespace is compressed and removed when, in the presence of the
colon, the adjoining tokens can be distinguished. This option affects the
preprocessor so that whitespace around colons is preserved. This is useful
when colons might be removed from the input after preprocessing but before
assembling, so that adjoining tokens can still be distinguished if there is
whitespace, or concatentated if there is not.
@item tc_frob_section
@cindex tc_frob_section
If you define this macro, a @code{BFD_ASSEMBLER} GAS will call it for each