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tccpp: cleanup options -dD -dM, remove -C

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The lexer is for reading files, not for writing.

Also :
- macro_is_equal(): avoid crash if redefining __FILE__
This commit is contained in:
grischka 2016-05-05 14:12:53 +02:00
parent caebbc3ee1
commit fe845cf53d
5 changed files with 198 additions and 246 deletions
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50
libtcc.c
View File

@ -1132,18 +1132,14 @@ LIBTCCAPI TCCState *tcc_new(void)
tcc_define_symbol(s, "__linux", NULL);
# endif
# if defined(__FreeBSD__)
# define str(s) #s
tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
# undef str
tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
# endif
# if defined(__FreeBSD_kernel__)
tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
# endif
#endif
# if defined(__NetBSD__)
# define str(s) #s
tcc_define_symbol(s, "__NetBSD__", str( __NetBSD__));
# undef str
tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
# endif
/* TinyCC & gcc defines */
@ -1227,8 +1223,6 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
/* close a preprocessor output */
if (s1->ppfp && s1->ppfp != stdout)
fclose(s1->ppfp);
if (s1->dffp && s1->dffp != s1->ppfp)
fclose(s1->dffp);
/* free all sections */
for(i = 1; i < s1->nb_sections; i++)
@ -1614,12 +1608,7 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
if (!s->ppfp)
tcc_error("could not write '%s'", s->outfile);
}
s->dffp = s->ppfp;
if (s->dflag == 'M')
s->ppfp = NULL;
}
if (s->option_C && !s->ppfp)
s->option_C = 0;
if (!s->nostdinc) {
/* default include paths */
@ -1670,7 +1659,6 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
tcc_add_crt(s, "crti.o");
}
#endif
#ifdef CONFIG_TCC_BCHECK
if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
{
@ -1681,12 +1669,8 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
put_extern_sym(sym, NULL, 0, 0);
}
#endif
if (s->normalize_inc_dirs)
tcc_normalize_inc_dirs(s);
if (s->output_type == TCC_OUTPUT_PREPROCESS)
print_defines();
return 0;
}
@ -1963,7 +1947,6 @@ enum {
TCC_OPTION_b,
TCC_OPTION_g,
TCC_OPTION_c,
TCC_OPTION_C,
TCC_OPTION_dumpversion,
TCC_OPTION_d,
TCC_OPTION_float_abi,
@ -2021,7 +2004,6 @@ static const TCCOption tcc_options[] = {
#endif
{ "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "c", TCC_OPTION_c, 0 },
{ "C", TCC_OPTION_C, 0 },
{ "dumpversion", TCC_OPTION_dumpversion, 0},
{ "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
#ifdef TCC_TARGET_ARM
@ -2210,17 +2192,15 @@ ST_FUNC int tcc_parse_args1(TCCState *s, int argc, char **argv)
tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_OBJ;
break;
case TCC_OPTION_C:
s->option_C = 1;
break;
case TCC_OPTION_d:
if (*optarg == 'D' || *optarg == 'M')
s->dflag = *optarg;
else {
if (s->warn_unsupported)
goto unsupported_option;
tcc_error("invalid option -- '%s'", r);
}
if (*optarg == 'D')
s->dflag = 3;
else if (*optarg == 'M')
s->dflag = 7;
else if (*optarg == 'b')
s->dflag = 8;
else
goto unsupported_option;
break;
#ifdef TCC_TARGET_ARM
case TCC_OPTION_float_abi:
@ -2310,12 +2290,11 @@ ST_FUNC int tcc_parse_args1(TCCState *s, int argc, char **argv)
do ++s->verbose; while (*optarg++ == 'v');
break;
case TCC_OPTION_f:
if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
if (tcc_set_flag(s, optarg, 1) < 0)
goto unsupported_option;
break;
case TCC_OPTION_W:
if (tcc_set_warning(s, optarg, 1) < 0 &&
s->warn_unsupported)
if (tcc_set_warning(s, optarg, 1) < 0)
goto unsupported_option;
break;
case TCC_OPTION_w:
@ -2378,10 +2357,9 @@ ST_FUNC int tcc_parse_args1(TCCState *s, int argc, char **argv)
/* ignored */
break;
default:
if (s->warn_unsupported) {
unsupported_option:
unsupported_option:
if (s->warn_unsupported)
tcc_warning("unsupported option '%s'", r);
}
break;
}
}

5
tcc.c
View File

@ -98,9 +98,8 @@ static void help(void)
" -Dsym[=val] define 'sym' with value 'val'\n"
" -Usym undefine 'sym'\n"
" -E preprocess only\n"
" -P[1] no/alternative output of #line directives\n"
" -d{D|M} dump defines\n"
" -C keep comments\n"
" -P[1] no / alternative #line output with -E\n"
" -dD -dM output #define directives with -E\n"
"Linker options:\n"
" -Ldir add library path 'dir'\n"
" -llib link with dynamic or static library 'lib'\n"

5
tcc.h
View File

@ -775,7 +775,6 @@ struct TCCState {
LINE_MACRO_OUTPUT_FORMAT_STD
} Pflag; /* -P switch */
char dflag; /* -dX value */
FILE *dffp;
/* for -MD/-MF: collected dependencies for this compilation */
char **target_deps;
@ -858,7 +857,6 @@ struct TCCState {
char *option_m; /* only -m32/-m64 handled */
int print_search_dirs; /* option */
int option_r; /* option -r */
int option_C; /* option -C, keep comments when -E */
int do_bench; /* option -bench */
int gen_deps; /* option -MD */
char *deps_outfile; /* option -MF */
@ -1296,7 +1294,6 @@ ST_INLN void define_push(int v, int macro_type, TokenString *str, Sym *first_arg
ST_FUNC void define_undef(Sym *s);
ST_INLN Sym *define_find(int v);
ST_FUNC void free_defines(Sym *b);
ST_FUNC void print_defines(void);
ST_FUNC Sym *label_find(int v);
ST_FUNC Sym *label_push(Sym **ptop, int v, int flags);
ST_FUNC void label_pop(Sym **ptop, Sym *slast);
@ -1453,7 +1450,7 @@ ST_FUNC void *tcc_get_symbol_err(TCCState *s, const char *name);
#ifndef TCC_TARGET_PE
ST_FUNC int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
ST_FUNC int tcc_load_ldscript(TCCState *s1);
ST_FUNC uint8_t *parse_comment(uint8_t *p, int skip);
ST_FUNC uint8_t *parse_comment(uint8_t *p);
ST_FUNC void minp(void);
ST_INLN void inp(void);
ST_FUNC int handle_eob(void);

2
tccelf.c
View File

@ -3282,7 +3282,7 @@ static int ld_next(TCCState *s1, char *name, int name_size)
case '/':
minp();
if (ch == '*') {
file->buf_ptr = parse_comment(file->buf_ptr,0);
file->buf_ptr = parse_comment(file->buf_ptr);
ch = file->buf_ptr[0];
goto redo;
} else {

382
tccpp.c
View File

@ -49,6 +49,9 @@ static char token_buf[STRING_MAX_SIZE + 1];
static CString cstr_buf;
static TokenString tokstr_buf;
static unsigned char isidnum_table[256 - CH_EOF];
static int pp_debug_tok, pp_debug_symv;
static void tok_print(const char *msg, const int *str);
/* isidnum_table flags: */
#define IS_SPC 1
#define IS_ID 2
@ -129,6 +132,21 @@ ST_FUNC void end_macro(void)
}
}
ST_FUNC char *trimfront(char *p)
{
while (*p && (unsigned char)*p <= ' ')
++p;
return p;
}
ST_FUNC char *trimback(char *a, char *e)
{
while (e > a && (unsigned char)e[-1] <= ' ')
--e;
*e = 0;;
return a;
}
/* ------------------------------------------------------------------------- */
/* Custom allocator for tiny objects */
@ -675,80 +693,12 @@ ST_FUNC void minp(void)
handle_stray();
}
static void pp_line(TCCState *s1, BufferedFile *f, int level)
{
if (s1->ppfp) {
int d = f->line_num - f->line_ref;
if (s1->Pflag == LINE_MACRO_OUTPUT_FORMAT_NONE
|| (level == 0 && f->line_ref && d < 8)) {
while (d > 0)
fputs("\n", s1->ppfp), --d;
} else if (s1->Pflag == LINE_MACRO_OUTPUT_FORMAT_STD) {
fprintf(s1->ppfp, "#line %d \"%s\"\n", f->line_num, f->filename);
} else {
fprintf(s1->ppfp, "# %d \"%s\"%s\n", f->line_num, f->filename,
level > 0 ? " 1" : level < 0 ? " 2" : "");
}
}
f->line_ref = f->line_num;
}
static uint8_t *parse_print_comment(uint8_t *p, int is_line_comment)
{
int c, star_count;
FILE *ppfp = tcc_state->ppfp;
if ((file->line_num - file->line_ref) > 0) {
fputc('\n', ppfp);
file->line_ref++;
pp_line(tcc_state, file, 0);
}
if (is_line_comment)
fputs("//", ppfp); else
fputs("/*", ppfp);
star_count = 0;
for(;;) {
c = *p;
if (c == '\\') {
file->buf_ptr = p;
c = handle_eob();
p = file->buf_ptr;
}
if (c == CH_EOF) {
if (is_line_comment) break;
tcc_error("unexpected end of file in comment");
}
if (c == '*')
star_count++;
else {
if ((c == '/') && star_count && !is_line_comment)
break;
star_count = 0;
if (c == '\n') {
if (is_line_comment) break;
file->line_num++;
}
}
fputc(c, ppfp);
p++;
}
if (!is_line_comment) {
fputc('/', ppfp);
p++;
file->line_ref = file->line_num;
}
return p;
}
/* single line C++ comments */
static uint8_t *parse_line_comment(uint8_t *p, int skip)
static uint8_t *parse_line_comment(uint8_t *p)
{
int c;
p++;
if (tcc_state->option_C && !skip)
return parse_print_comment(p, 1);
for(;;) {
c = *p;
redo:
@ -781,13 +731,11 @@ static uint8_t *parse_line_comment(uint8_t *p, int skip)
}
/* C comments */
ST_FUNC uint8_t *parse_comment(uint8_t *p, int skip)
ST_FUNC uint8_t *parse_comment(uint8_t *p)
{
int c;
p++;
if (tcc_state->option_C && !skip)
return parse_print_comment(p, 0);
for(;;) {
/* fast skip loop */
for(;;) {
@ -994,9 +942,9 @@ redo_start:
minp();
p = file->buf_ptr;
if (ch == '*') {
p = parse_comment(p,1);
p = parse_comment(p);
} else if (ch == '/') {
p = parse_line_comment(p,1);
p = parse_line_comment(p);
}
break;
case '#':
@ -1017,9 +965,9 @@ redo_start:
else if (tok == TOK_LINEFEED)
goto redo_start;
else if (parse_flags & PARSE_FLAG_ASM_FILE)
p = parse_line_comment(p,0);
p = parse_line_comment(p);
} else if (parse_flags & PARSE_FLAG_ASM_FILE)
p = parse_line_comment(p,0);
p = parse_line_comment(p);
break;
_default:
default:
@ -1287,6 +1235,10 @@ static int macro_is_equal(const int *a, const int *b)
{
CValue cv;
int t;
if (!a || !b)
return 1;
while (*a && *b) {
/* first time preallocate static cstr_buf, next time only reset position to start */
cstr_reset(&cstr_buf);
@ -1299,106 +1251,25 @@ static int macro_is_equal(const int *a, const int *b)
return !(*a || *b);
}
static void tok_print(const char *msg, const int *str)
{
FILE *pr = tcc_state->dffp;
int t;
CValue cval;
fprintf(pr, "%s ", msg);
while (str) {
TOK_GET(&t, &str, &cval);
if (!t)
break;
fprintf(pr,"%s", get_tok_str(t, &cval));
}
fprintf(pr, "\n");
}
static int define_print_prepared(Sym *s)
{
if (!s || !tcc_state->dffp || tcc_state->dflag == 0)
return 0;
if (s->v < TOK_IDENT || s->v >= tok_ident)
return 0;
if (file && tcc_state->dflag == 'D') {
file->line_num--;
pp_line(tcc_state, file, 0);
file->line_ref = ++file->line_num;
}
return 1;
}
static void define_print(int v)
{
FILE *pr = tcc_state->dffp;
Sym *s, *a;
s = define_find(v);
if (define_print_prepared(s) == 0)
return;
fprintf(pr, "// #define %s", get_tok_str(v, NULL));
if (s->type.t == MACRO_FUNC) {
a = s->next;
fprintf(pr,"(");
if (a)
for (;;) {
fprintf(pr,"%s", get_tok_str(a->v & ~SYM_FIELD, NULL));
if (!(a = a->next))
break;
fprintf(pr,",");
}
fprintf(pr,")");
}
tok_print("", s->d);
}
static void undef_print(int v)
{
FILE *pr = tcc_state->dffp;
Sym *s;
s = define_find(v);
if (define_print_prepared(s) == 0)
return;
fprintf(pr, "// #undef %s\n", get_tok_str(s->v, NULL));
}
ST_FUNC void print_defines(void)
{
Sym *top = define_stack;
while (top) {
define_print(top->v);
top = top->prev;
}
}
/* defines handling */
ST_INLN void define_push(int v, int macro_type, TokenString *str, Sym *first_arg)
{
Sym *s;
if (str) {
s = define_find(v);
if (s && !macro_is_equal(s->d, str->str))
tcc_warning("%s redefined", get_tok_str(v, NULL));
}
Sym *s, *o;
o = define_find(v);
s = sym_push2(&define_stack, v, macro_type, 0);
s->d = str ? tok_str_dup(str) : NULL;
s->next = first_arg;
table_ident[v - TOK_IDENT]->sym_define = s;
if (o && !macro_is_equal(o->d, s->d))
tcc_warning("%s redefined", get_tok_str(v, NULL));
}
/* undefined a define symbol. Its name is just set to zero */
ST_FUNC void define_undef(Sym *s)
{
int v = s->v;
undef_print(v);
if (v >= TOK_IDENT && v < tok_ident)
table_ident[v - TOK_IDENT]->sym_define = NULL;
}
@ -1602,7 +1473,6 @@ ST_FUNC void parse_define(void)
bad_twosharp:
tcc_error("'##' cannot appear at either end of macro");
define_push(v, t, &tokstr_buf, first);
define_print(v);
}
static inline int hash_cached_include(const char *filename)
@ -1688,6 +1558,7 @@ static void pragma_parse(TCCState *s1)
table_ident[v - TOK_IDENT]->sym_define = s->d ? s : NULL;
else
tcc_warning("unbalanced #pragma pop_macro");
pp_debug_tok = t, pp_debug_symv = v;
} else if (tok == TOK_once) {
char buf1[sizeof(file->filename) + sizeof(ONCE_PREFIX)];
@ -1788,11 +1659,15 @@ ST_FUNC void preprocess(int is_bof)
redo:
switch(tok) {
case TOK_DEFINE:
pp_debug_tok = tok;
next_nomacro();
pp_debug_symv = tok;
parse_define();
break;
case TOK_UNDEF:
pp_debug_tok = tok;
next_nomacro();
pp_debug_symv = tok;
s = define_find(tok);
/* undefine symbol by putting an invalid name */
if (s)
@ -2059,7 +1934,7 @@ _line_num:
goto ignore;
tcc_warning("Ignoring unknown preprocessing directive #%s", get_tok_str(tok, &tokc));
ignore:
file->buf_ptr = parse_line_comment(file->buf_ptr,0);
file->buf_ptr = parse_line_comment(file->buf_ptr);
goto the_end;
}
/* ignore other preprocess commands or #! for C scripts */
@ -2655,7 +2530,7 @@ maybe_newline:
tok = TOK_TWOSHARPS;
} else {
if (parse_flags & PARSE_FLAG_ASM_FILE) {
p = parse_line_comment(p - 1,0);
p = parse_line_comment(p - 1);
goto redo_no_start;
} else {
tok = '#';
@ -2918,17 +2793,13 @@ maybe_newline:
case '/':
PEEKC(c, p);
if (c == '*') {
p = parse_comment(p,0);
p = parse_comment(p);
/* comments replaced by a blank */
tok = ' ';
if (tcc_state->option_C)
goto redo_no_start;
goto keep_tok_flags;
} else if (c == '/') {
p = parse_line_comment(p,0);
p = parse_line_comment(p);
tok = ' ';
if (tcc_state->option_C)
goto redo_no_start;
goto keep_tok_flags;
} else if (c == '=') {
p++;
@ -3150,10 +3021,10 @@ static int next_argstream(Sym **nested_list, int can_read_stream, TokenString *w
uint8_t *p = file->buf_ptr;
PEEKC(c, p);
if (c == '*') {
p = parse_comment(p,0);
p = parse_comment(p);
file->buf_ptr = p - 1;
} else if (c == '/') {
p = parse_line_comment(p,0);
p = parse_line_comment(p);
file->buf_ptr = p - 1;
} else
break;
@ -3570,8 +3441,6 @@ ST_INLN void unget_tok(int last_tok)
tok = last_tok;
}
/* better than nothing, but needs extension to handle '-E' option
correctly too */
ST_FUNC void preprocess_init(TCCState *s1)
{
s1->include_stack_ptr = s1->include_stack;
@ -3585,8 +3454,7 @@ ST_FUNC void preprocess_init(TCCState *s1)
s1->pack_stack_ptr = s1->pack_stack;
isidnum_table['$' - CH_EOF] =
tcc_state->dollars_in_identifiers ? IS_ID : 0;
s1->dollars_in_identifiers ? IS_ID : 0;
isidnum_table['.' - CH_EOF] =
(parse_flags & PARSE_FLAG_ASM_FILE) ? IS_ID : 0;
}
@ -3665,11 +3533,122 @@ ST_FUNC void preprocess_delete(void)
cstr_alloc = NULL;
}
/* ------------------------------------------------------------------------- */
/* tcc -E [-P[1]] [-dD} support */
static void tok_print(const char *msg, const int *str)
{
FILE *fp;
int t;
CValue cval;
fp = tcc_state->ppfp;
if (!fp || !tcc_state->dflag)
fp = stdout;
fprintf(fp, "%s ", msg);
while (str) {
TOK_GET(&t, &str, &cval);
if (!t)
break;
fprintf(fp,"%s", get_tok_str(t, &cval));
}
fprintf(fp, "\n");
}
static void pp_line(TCCState *s1, BufferedFile *f, int level)
{
int d = f->line_num - f->line_ref;
if (s1->dflag & 4)
return;
if (s1->Pflag == LINE_MACRO_OUTPUT_FORMAT_NONE) {
if (level == 0 && f->line_ref && d) {
d = 1;
goto simple;
}
} else if (level == 0 && f->line_ref && d < 8) {
simple:
while (d > 0)
fputs("\n", s1->ppfp), --d;
} else if (s1->Pflag == LINE_MACRO_OUTPUT_FORMAT_STD) {
fprintf(s1->ppfp, "#line %d \"%s\"\n", f->line_num, f->filename);
} else {
fprintf(s1->ppfp, "# %d \"%s\"%s\n", f->line_num, f->filename,
level > 0 ? " 1" : level < 0 ? " 2" : "");
}
f->line_ref = f->line_num;
}
static void define_print(TCCState *s1, int v)
{
FILE *fp;
Sym *s;
s = define_find(v);
if (NULL == s || NULL == s->d)
return;
fp = s1->ppfp;
fprintf(fp, "#define %s", get_tok_str(v, NULL));
if (s->type.t == MACRO_FUNC) {
Sym *a = s->next;
fprintf(fp,"(");
if (a)
for (;;) {
fprintf(fp,"%s", get_tok_str(a->v & ~SYM_FIELD, NULL));
if (!(a = a->next))
break;
fprintf(fp,",");
}
fprintf(fp,")");
}
tok_print("", s->d);
}
static void pp_debug_defines(TCCState *s1)
{
int v, t;
const char *vs;
FILE *fp;
t = pp_debug_tok;
if (t == 0)
return;
file->line_num--;
pp_line(s1, file, 0);
file->line_ref = ++file->line_num;
fp = s1->ppfp;
v = pp_debug_symv;
vs = get_tok_str(v, NULL);
if (t == TOK_DEFINE) {
define_print(s1, v);
} else if (t == TOK_UNDEF) {
fprintf(fp, "#undef %s\n", vs);
} else if (t == TOK_push_macro) {
fprintf(fp, "#pragma push_macro(\"%s\")\n", vs);
} else if (t == TOK_pop_macro) {
fprintf(fp, "#pragma pop_macro(\"%s\")\n", vs);
}
pp_debug_tok = 0;
}
static void pp_debug_builtins(TCCState *s1)
{
int v;
for (v = TOK_IDENT; v < tok_ident; ++v)
define_print(s1, v);
}
/* Preprocess the current file */
ST_FUNC int tcc_preprocess(TCCState *s1)
{
BufferedFile **iptr;
int token_seen, spcs, level;
Sym *define_start;
preprocess_init(s1);
ch = file->buf_ptr[0];
@ -3680,12 +3659,19 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
| PARSE_FLAG_SPACES
| PARSE_FLAG_ACCEPT_STRAYS
;
define_start = define_stack;
#ifdef PP_BENCH
/* for PP benchmarks */
do next(); while (tok != TOK_EOF); return 0;
#endif
token_seen = spcs = 0;
if (s1->dflag & 1) {
pp_debug_builtins(s1);
s1->dflag &= ~1;
}
token_seen = TOK_LINEFEED, spcs = 0;
pp_line(s1, file, 0);
for (;;) {
@ -3700,7 +3686,13 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
pp_line(s1, file, level);
}
if (0 == token_seen) {
if (s1->dflag) {
pp_debug_defines(s1);
if (s1->dflag & 4)
continue;
}
if (token_seen == TOK_LINEFEED) {
if (tok == ' ') {
++spcs;
continue;
@ -3710,33 +3702,19 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
continue;
}
pp_line(s1, file, 0);
while (s1->ppfp && spcs > 0)
fputs(" ", s1->ppfp), --spcs;
spcs = 0;
token_seen = 1;
} else if (tok == TOK_LINEFEED) {
++file->line_ref;
token_seen = 0;
}
if (s1->ppfp)
fputs(get_tok_str(tok, &tokc), s1->ppfp);
}
while (spcs)
fputs(" ", s1->ppfp), --spcs;
fputs(get_tok_str(tok, &tokc), s1->ppfp);
token_seen = tok;
}
/* reset define stack, but keep -D and built-ins */
free_defines(define_start);
return 0;
}
ST_FUNC char *trimfront(char *p)
{
while (*p && (unsigned char)*p <= ' ')
++p;
return p;
}
ST_FUNC char *trimback(char *a, char *e)
{
while (e > a && (unsigned char)e[-1] <= ' ')
--e;
*e = 0;;
return a;
}
/* ------------------------------------------------------------------------- */