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initial implementation of -E option

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This commit is contained in:
bellard 2006-10-16 19:44:00 +00:00
parent 6ca0299e5b
commit 200b58dad8
2 changed files with 85 additions and 11 deletions
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1
libtcc.h
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@ -60,6 +60,7 @@ int tcc_compile_string(TCCState *s, const char *buf);
#define TCC_OUTPUT_EXE 1 /* executable file */
#define TCC_OUTPUT_DLL 2 /* dynamic library */
#define TCC_OUTPUT_OBJ 3 /* object file */
#define TCC_OUTPUT_PREPROCESS 4 /* preprocessed file (used internally) */
int tcc_set_output_type(TCCState *s, int output_type);
#define TCC_OUTPUT_FORMAT_ELF 0 /* default output format: ELF */

81
tcc.c
View File

@ -504,6 +504,9 @@ struct TCCState {
/* pack stack */
int pack_stack[PACK_STACK_SIZE];
int *pack_stack_ptr;
/* output file for preprocessing */
FILE *outfile;
};
/* The current value can be: */
@ -839,6 +842,7 @@ static int tcc_add_dll(TCCState *s, const char *filename, int flags);
#define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
#define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
#define AFF_PREPROCESS 0x0004 /* preprocess file */
static int tcc_add_file_internal(TCCState *s, const char *filename, int flags);
/* tcccoff.c */
@ -1675,6 +1679,8 @@ char *get_tok_str(int v, CValue *cv)
case TOK_GT:
v = '>';
goto addv;
case TOK_DOTS:
return strcpy(p, "...");
case TOK_A_SHL:
return strcpy(p, "<<=");
case TOK_A_SAR:
@ -9279,6 +9285,47 @@ static int tcc_compile(TCCState *s1)
return s1->nb_errors != 0 ? -1 : 0;
}
/* Preprocess the current file */
/* XXX: add line and file infos, add options to preserve spaces */
static int tcc_preprocess(TCCState *s1)
{
Sym *define_start;
int last_is_space;
preprocess_init(s1);
define_start = define_stack;
ch = file->buf_ptr[0];
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
parse_flags = PARSE_FLAG_ASM_COMMENTS | PARSE_FLAG_PREPROCESS |
PARSE_FLAG_LINEFEED;
last_is_space = 1;
next();
for(;;) {
if (tok == TOK_EOF)
break;
if (!last_is_space) {
fputc(' ', s1->outfile);
}
fputs(get_tok_str(tok, &tokc), s1->outfile);
if (tok == TOK_LINEFEED) {
last_is_space = 1;
/* XXX: suppress that hack */
parse_flags &= ~PARSE_FLAG_LINEFEED;
next();
parse_flags |= PARSE_FLAG_LINEFEED;
} else {
last_is_space = 0;
next();
}
}
free_defines(define_start);
return 0;
}
#ifdef LIBTCC
int tcc_compile_string(TCCState *s, const char *str)
{
@ -9944,7 +9991,9 @@ static int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
goto fail1;
}
if (!ext || !strcmp(ext, "c")) {
if (flags & AFF_PREPROCESS) {
ret = tcc_preprocess(s1);
} else if (!ext || !strcmp(ext, "c")) {
/* C file assumed */
ret = tcc_compile(s1);
} else
@ -10264,7 +10313,7 @@ static int64_t getclock_us(void)
void help(void)
{
printf("tcc version " TCC_VERSION " - Tiny C Compiler - Copyright (C) 2001-2005 Fabrice Bellard\n"
printf("tcc version " TCC_VERSION " - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
"usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
" [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-static]\n"
" [infile1 infile2...] [-run infile args...]\n"
@ -10280,6 +10329,7 @@ void help(void)
" -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
" -w disable all warnings\n"
"Preprocessor options:\n"
" -E preprocess only\n"
" -Idir add include path 'dir'\n"
" -Dsym[=val] define 'sym' with value 'val'\n"
" -Usym undefine 'sym'\n"
@ -10338,6 +10388,7 @@ enum {
TCC_OPTION_v,
TCC_OPTION_w,
TCC_OPTION_pipe,
TCC_OPTION_E,
};
static const TCCOption tcc_options[] = {
@ -10373,6 +10424,7 @@ static const TCCOption tcc_options[] = {
{ "v", TCC_OPTION_v, 0 },
{ "w", TCC_OPTION_w, 0 },
{ "pipe", TCC_OPTION_pipe, 0},
{ "E", TCC_OPTION_E, 0},
{ NULL },
};
@ -10601,6 +10653,9 @@ int parse_args(TCCState *s, int argc, char **argv)
}
}
break;
case TCC_OPTION_E:
output_type = TCC_OUTPUT_PREPROCESS;
break;
default:
if (s->warn_unsupported) {
unsupported_option:
@ -10674,7 +10729,16 @@ int main(int argc, char **argv)
error("cannot specify libraries with -c");
}
if (output_type != TCC_OUTPUT_MEMORY) {
if (output_type == TCC_OUTPUT_PREPROCESS) {
if (!outfile) {
s->outfile = stdout;
} else {
s->outfile = fopen(outfile, "wb");
if (!s->outfile)
error("could not open '%s", outfile);
}
} else if (output_type != TCC_OUTPUT_MEMORY) {
if (!outfile) {
/* compute default outfile name */
pstrcpy(objfilename, sizeof(objfilename) - 1,
@ -10709,6 +10773,10 @@ int main(int argc, char **argv)
const char *filename;
filename = files[i];
if (output_type == TCC_OUTPUT_PREPROCESS) {
tcc_add_file_internal(s, filename,
AFF_PRINT_ERROR | AFF_PREPROCESS);
} else {
if (filename[0] == '-') {
if (tcc_add_library(s, filename + 2) < 0)
error("cannot find %s", filename);
@ -10719,6 +10787,7 @@ int main(int argc, char **argv)
}
}
}
}
/* free all files */
tcc_free(files);
@ -10736,7 +10805,11 @@ int main(int argc, char **argv)
total_bytes / total_time / 1000000.0);
}
if (s->output_type == TCC_OUTPUT_MEMORY) {
if (s->output_type == TCC_OUTPUT_PREPROCESS) {
if (outfile)
fclose(s->outfile);
ret = 0;
} else if (s->output_type == TCC_OUTPUT_MEMORY) {
ret = tcc_run(s, argc - optind, argv + optind);
} else
#ifdef TCC_TARGET_PE