github-repos/tinycc
1
0
Fork 0
mirror of https://github.com/mirror/tinycc.git synced 2025-04-05 12:50:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

PP_NUM in ASM mode

Browse Source 
oxe+1 is parsed as 0xe +1 if (parse_flags & PARSE_FLAG_ASM_FILE)
        Helps to compile a code:
        __asm__("mov $0xe" "+1", "%eax\n")
This commit is contained in:
seyko 2016-05-04 16:54:40 +03:00
parent 78ee3759b8
commit 78e4ee55b7
1 changed files with 34 additions and 9 deletions

41
tccpp.c
View File

@ -2558,6 +2558,7 @@ static inline void next_nomacro1(void)
TokenSym *ts; TokenSym *ts;
uint8_t *p, *p1; uint8_t *p, *p1;
unsigned int h; unsigned int h;
int is_dec;
p = file->buf_ptr; p = file->buf_ptr;
redo_no_start: redo_no_start:
@ -2752,23 +2753,45 @@ maybe_newline:
} }
break; break;
case '0': case '1': case '2': case '3': case '0':
case '4': case '5': case '6': case '7':
case '8': case '9':
cstr_reset(&tokcstr);
/* after the first digit, accept digits, alpha, '.' or sign if
prefixed by 'eEpP' */
parse_num:
for(;;) {
t = c; t = c;
cstr_reset(&tokcstr);
cstr_ccat(&tokcstr, c); cstr_ccat(&tokcstr, c);
PEEKC(c, p); PEEKC(c, p);
is_dec = 1;
if ((c == 'x') || (c == 'o') || (c == 'b'))
is_dec = 0;
goto parse_num;
case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9':
is_dec = 1;
t = c;
cstr_reset(&tokcstr);
cstr_ccat(&tokcstr, c);
PEEKC(c, p);
parse_num:
for(;;) {
if (parse_flags & PARSE_FLAG_ASM_FILE) {
if (!((isidnum_table[c - CH_EOF] & (IS_ID|IS_NUM))
|| (c == '.')
|| ((c == '+' || c == '-')
&& (((t == 'e' || t == 'E') && is_dec) ||
((t == 'p' || t == 'P') && !is_dec)))
))
break;
} else
if (!((isidnum_table[c - CH_EOF] & (IS_ID|IS_NUM)) if (!((isidnum_table[c - CH_EOF] & (IS_ID|IS_NUM))
|| c == '.' || c == '.'
|| ((c == '+' || c == '-') || ((c == '+' || c == '-')
&& (t == 'e' || t == 'E' || t == 'p' || t == 'P') && (t == 'e' || t == 'E' || t == 'p' || t == 'P')
))) )))
break; break;
t = c;
cstr_ccat(&tokcstr, c);
PEEKC(c, p);
} }
/* We add a trailing '\0' to ease parsing */ /* We add a trailing '\0' to ease parsing */
cstr_ccat(&tokcstr, '\0'); cstr_ccat(&tokcstr, '\0');
@ -2782,6 +2805,8 @@ maybe_newline:
/* special dot handling because it can also start a number */ /* special dot handling because it can also start a number */
PEEKC(c, p); PEEKC(c, p);
if (isnum(c)) { if (isnum(c)) {
t = '.';
is_dec = 1;
cstr_reset(&tokcstr); cstr_reset(&tokcstr);
cstr_ccat(&tokcstr, '.'); cstr_ccat(&tokcstr, '.');
goto parse_num; goto parse_num;