condeval is called jump threading now
[cparser] / main.c
diff --git a/main.c b/main.c
index 0104f31..b93ac30 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,6 +1,6 @@
 /*
  * This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
 #include "driver/firm_opt.h"
 #include "driver/firm_cmdline.h"
 #include "adt/error.h"
-#include "write_fluffy.h"
-#include "write_caml.h"
+#include "wrappergen/write_fluffy.h"
+#include "wrappergen/write_caml.h"
+#include "wrappergen/write_jna.h"
 #include "revision.h"
 #include "warning.h"
 #include "mangle.h"
 
 #ifndef PREPROCESSOR
 #ifndef __WIN32__
-#define PREPROCESSOR "gcc -E -std=c99 -m32 -U__STRICT_ANSI__"
+#define PREPROCESSOR "gcc -E -m32 -U__STRICT_ANSI__"
 #else
-#define PREPROCESSOR "cpp -std=c99 -m32 -U__STRICT_ANSI__"
+#define PREPROCESSOR "cpp -m32 -U__STRICT_ANSI__"
 #endif
 #endif
 
@@ -129,6 +130,20 @@ static struct obstack  cppflags_obst, ldflags_obst;
 static char            dep_target[1024];
 static const char     *outname;
 
+typedef enum lang_standard_t {
+       STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
+       STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
+       STANDARD_C89,     /* ISO C90 (sic) */
+       STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
+       STANDARD_C99,     /* ISO C99 */
+       STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
+       STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
+       STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
+       STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
+} lang_standard_t;
+
+static lang_standard_t standard;
+
 typedef struct file_list_entry_t file_list_entry_t;
 
 typedef enum filetype_t {
@@ -140,6 +155,7 @@ typedef enum filetype_t {
        FILETYPE_ASSEMBLER,
        FILETYPE_PREPROCESSED_ASSEMBLER,
        FILETYPE_OBJECT,
+       FILETYPE_IR,
        FILETYPE_UNKNOWN
 } filetype_t;
 
@@ -180,30 +196,24 @@ static void initialize_firm(void)
 static void get_output_name(char *buf, size_t buflen, const char *inputname,
                             const char *newext)
 {
-       size_t last_dot = 0xffffffff;
-       size_t i = 0;
-
-       if (inputname == NULL) {
-               snprintf(buf, buflen, "a%s", newext);
-               return;
-       }
-
-       for (const char *c = inputname; *c != 0; ++c) {
-               if (*c == '.')
-                       last_dot = i;
-               ++i;
-       }
-       if (last_dot == 0xffffffff)
-               last_dot = i;
-
-       if (last_dot >= buflen)
-               panic("filename too long");
-       memcpy(buf, inputname, last_dot);
-
-       size_t extlen = strlen(newext) + 1;
-       if (extlen + last_dot >= buflen)
+       if (inputname == NULL)
+               inputname = "a";
+
+       char const *const last_slash = strrchr(inputname, '/');
+       char const *const filename   =
+               last_slash != NULL ? last_slash + 1 : inputname;
+       char const *const last_dot   = strrchr(filename, '.');
+       char const *const name_end   =
+               last_dot != NULL ? last_dot : strchr(filename, '\0');
+
+       int const len = snprintf(buf, buflen, "%.*s%s",
+                       (int)(name_end - filename), filename, newext);
+#ifdef _WIN32
+       if (len < 0 || buflen <= (size_t)len)
+#else
+       if (buflen <= (size_t)len)
+#endif
                panic("filename too long");
-       memcpy(buf+last_dot, newext, extlen);
 }
 
 #include "builtins.h"
@@ -237,7 +247,7 @@ static void lextest(FILE *in, const char *fname)
 
 static void add_flag(struct obstack *obst, const char *format, ...)
 {
-       char buf[4096];
+       char buf[65536];
        va_list ap;
 
        va_start(ap, format);
@@ -288,30 +298,60 @@ static const char *type_to_string(type_t *type)
        return get_atomic_kind_name(type->atomic.akind);
 }
 
-static FILE *preprocess(const char *fname)
+static FILE *preprocess(const char *fname, filetype_t filetype)
 {
-       obstack_1grow(&cppflags_obst, '\0');
-       const char *flags = obstack_finish(&cppflags_obst);
-
-       obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
-
-       /* setup default defines */
-       add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
-       add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
-       add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
-       add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
-
-       /* TODO hack... */
-       add_flag(&cppflags_obst, "-D__builtin_abort=abort");
-       add_flag(&cppflags_obst, "-D__builtin_abs=abs");
-       add_flag(&cppflags_obst, "-D__builtin_exit=exit");
-       add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
-       add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
-       add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
-       add_flag(&cppflags_obst, "-D__builtin_memset=memset");
-       add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
-       add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
-       add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
+       static const char *common_flags = NULL;
+
+       if (common_flags == NULL) {
+               obstack_1grow(&cppflags_obst, '\0');
+               const char *flags = obstack_finish(&cppflags_obst);
+
+               /* setup default defines */
+               add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
+               add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
+               add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
+               add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
+
+               add_flag(&cppflags_obst, "-U__VERSION__");
+               add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
+
+               /* TODO hack... */
+               add_flag(&cppflags_obst, "-D__builtin_abort=abort");
+               add_flag(&cppflags_obst, "-D__builtin_abs=abs");
+               add_flag(&cppflags_obst, "-D__builtin_exit=exit");
+               add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
+               add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
+               add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
+               add_flag(&cppflags_obst, "-D__builtin_memset=memset");
+               add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
+               add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
+               add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
+
+               if (flags[0] != '\0') {
+                       size_t len = strlen(flags);
+                       obstack_1grow(&cppflags_obst, ' ');
+                       obstack_grow(&cppflags_obst, flags, len);
+               }
+               common_flags = obstack_finish(&cppflags_obst);
+       }
+
+       assert(obstack_object_size(&cppflags_obst) == 0);
+       obstack_printf(&cppflags_obst, "%s ", PREPROCESSOR);
+       switch (filetype) {
+       case FILETYPE_C:
+               add_flag(&cppflags_obst, "-std=c99");
+               break;
+       case FILETYPE_CXX:
+               add_flag(&cppflags_obst, "-std=c++98");
+               break;
+       case FILETYPE_ASSEMBLER:
+               add_flag(&cppflags_obst, "-x");
+               add_flag(&cppflags_obst, "assembler-with-cpp");
+               break;
+       default:
+               break;
+       }
+       obstack_printf(&cppflags_obst, "%s", common_flags);
 
        /* handle dependency generation */
        if (dep_target[0] != '\0') {
@@ -322,13 +362,10 @@ static FILE *preprocess(const char *fname)
                                add_flag(&cppflags_obst, outname);
                }
        }
-       if (flags[0] != '\0') {
-               obstack_printf(&cppflags_obst, " %s", flags);
-       }
        add_flag(&cppflags_obst, fname);
 
        obstack_1grow(&cppflags_obst, '\0');
-       const char *buf = obstack_finish(&cppflags_obst);
+       char *buf = obstack_finish(&cppflags_obst);
        if (verbose) {
                puts(buf);
        }
@@ -339,12 +376,15 @@ static FILE *preprocess(const char *fname)
                exit(1);
        }
 
+       /* we don't really need that anymore */
+       obstack_free(&cppflags_obst, buf);
+
        return f;
 }
 
 static void assemble(const char *out, const char *in)
 {
-       char buf[4096];
+       char buf[65536];
 
        snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
        if (verbose) {
@@ -503,12 +543,14 @@ typedef enum compile_mode_t {
        ParseOnly,
        Compile,
        CompileDump,
+       CompileExportIR,
        CompileAssemble,
        CompileAssembleLink,
        LexTest,
        PrintAst,
        PrintFluffy,
-       PrintCaml
+       PrintCaml,
+       PrintJna
 } compile_mode_t;
 
 static void usage(const char *argv0)
@@ -516,23 +558,26 @@ static void usage(const char *argv0)
        fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 }
 
-static void print_cparser_version(void) {
+static void print_cparser_version(void)
+{
        printf("cparser (%s) using libFirm (%u.%u",
-              cparser_REVISION, firm_get_version_major(),
-              firm_get_version_minor());
+              cparser_REVISION, ir_get_version_major(),
+              ir_get_version_minor());
 
-       const char *revision = firm_get_version_revision();
+       const char *revision = ir_get_version_revision();
        if (revision[0] != 0) {
                putchar(' ');
                fputs(revision, stdout);
        }
 
-       const char *build = firm_get_version_build();
+       const char *build = ir_get_version_build();
        if (build[0] != 0) {
                putchar(' ');
                fputs(build, stdout);
        }
-       puts(")\n");
+       puts(")");
+       puts("This is free software; see the source for copying conditions.  There is NO\n"
+            "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 }
 
 static void set_be_option(const char *arg)
@@ -626,18 +671,6 @@ static void init_os_support(void)
        }
 }
 
-typedef enum lang_standard_t {
-       STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
-       STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
-       STANDARD_C89,     /* ISO C90 (sic) */
-       STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
-       STANDARD_C99,     /* ISO C99 */
-       STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
-       STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
-       STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
-       STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
-} lang_standard_t;
-
 int main(int argc, char **argv)
 {
        initialize_firm();
@@ -716,14 +749,14 @@ int main(int argc, char **argv)
                break;
        default:
        case 4:
-               set_option("strict-aliasing");
                /* use_builtins = true; */
                /* fallthrough */
        case 3:
-               set_option("cond-eval");
+               set_option("jumpthreading");
                set_option("if-conv");
                /* fallthrough */
        case 2:
+               set_option("strict-aliasing");
                set_option("inline");
                set_option("deconv");
                set_be_option("omitfp");
@@ -731,7 +764,7 @@ int main(int argc, char **argv)
        }
 
        /* parse rest of options */
-       lang_standard_t standard        = STANDARD_DEFAULT;
+       standard                        = STANDARD_DEFAULT;
        unsigned        features_on     = 0;
        unsigned        features_off    = 0;
        filetype_t      forced_filetype = FILETYPE_AUTODETECT;
@@ -829,6 +862,9 @@ int main(int argc, char **argv)
                                    strstart(orig_opt, "align-jumps=") ||
                                    strstart(orig_opt, "align-functions=")) {
                                        fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
+                               } else if (strstart(orig_opt, "input-charset=")) {
+                                       char const* const encoding = strchr(orig_opt, '=') + 1;
+                                       select_input_encoding(encoding);
                                } else if (streq(orig_opt, "verbose-asm")) {
                                        /* ignore: we always print verbose assembler */
                                } else {
@@ -839,19 +875,23 @@ int main(int argc, char **argv)
                                                opt += 3;
                                        }
 
-                                       if (streq(opt, "dollars-in-identifiers")) {
-                                               allow_dollar_in_symbol = truth_value;
-                                       } if (streq(opt, "builtins")) {
+                                       if (streq(opt, "builtins")) {
                                                use_builtins = truth_value;
+                                       } else if (streq(opt, "dollars-in-identifiers")) {
+                                               allow_dollar_in_symbol = truth_value;
+                                       } else if (streq(opt, "omit-frame-pointer")) {
+                                               set_be_option(truth_value ? "omitfp" : "omitfp=no");
                                        } else if (streq(opt, "short-wchar")) {
                                                wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
                                                        : ATOMIC_TYPE_INT;
-                                       } else if (streq(opt, "syntax-only")) {
-                                               mode = truth_value ? ParseOnly : CompileAssembleLink;
-                                       } else if (streq(opt, "omit-frame-pointer")) {
-                                               set_be_option(truth_value ? "omitfp" : "omitfp=no");
+                                       } else if (streq(opt, "signed-char")) {
+                                               char_is_signed = truth_value;
                                        } else if (streq(opt, "strength-reduce")) {
                                                firm_option(truth_value ? "strength-red" : "no-strength-red");
+                                       } else if (streq(opt, "syntax-only")) {
+                                               mode = truth_value ? ParseOnly : CompileAssembleLink;
+                                       } else if (streq(opt, "unsigned-char")) {
+                                               char_is_signed = !truth_value;
                                        } else if (streq(opt, "fast-math")               ||
                                                   streq(opt, "jump-tables")             ||
                                                   streq(opt, "unroll-loops")            ||
@@ -960,6 +1000,8 @@ int main(int argc, char **argv)
                                        set_be_option("omitleaffp=1");
                                } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
                                        set_be_option("omitleaffp=0");
+                               } else if (streq(opt, "rtd")) {
+                                       default_calling_convention = CC_STDCALL;
                                } else {
                                        char *endptr;
                                        long int value = strtol(opt, &endptr, 10);
@@ -1018,10 +1060,6 @@ int main(int argc, char **argv)
                                } else if (streq(option, "no-ms")) {
                                        features_on  &= ~_MS;
                                        features_off |=  _MS;
-                               } else if (streq(option, "signed-chars")) {
-                                       char_is_signed = true;
-                               } else if (streq(option, "unsigned-chars")) {
-                                       char_is_signed = false;
                                } else if (streq(option, "strict")) {
                                        strict_mode = true;
                                } else if (streq(option, "lextest")) {
@@ -1038,6 +1076,8 @@ int main(int argc, char **argv)
                                        mode = PrintFluffy;
                                } else if (streq(option, "print-caml")) {
                                        mode = PrintCaml;
+                               } else if (streq(option, "print-jna")) {
+                                       mode = PrintJna;
                                } else if (streq(option, "version")) {
                                        print_cparser_version();
                                        exit(EXIT_SUCCESS);
@@ -1051,6 +1091,8 @@ int main(int argc, char **argv)
                                        }
                                        dumpfunction = argv[i];
                                        mode         = CompileDump;
+                               } else if (streq(option, "export-ir")) {
+                                       mode = CompileExportIR;
                                } else {
                                        fprintf(stderr, "error: unknown argument '%s'\n", arg);
                                        argument_errors = true;
@@ -1078,6 +1120,7 @@ int main(int argc, char **argv)
                                                        streq(suffix, "cpp") ? FILETYPE_CXX                    :
                                                        streq(suffix, "cxx") ? FILETYPE_CXX                    :
                                                        streq(suffix, "h")   ? FILETYPE_C                      :
+                                                       streq(suffix, "ir")  ? FILETYPE_IR                     :
                                                        streq(suffix, "o")   ? FILETYPE_OBJECT                 :
                                                        streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
                                                        streq(suffix, "so")  ? FILETYPE_OBJECT                 :
@@ -1127,6 +1170,10 @@ int main(int argc, char **argv)
        /* we do the lowering in ast2firm */
        firm_opt.lower_bitfields = FALSE;
 
+       /* set the c_mode here, types depends on it */
+       c_mode |= features_on;
+       c_mode &= ~features_off;
+
        gen_firm_init();
        init_symbol_table();
        init_types();
@@ -1157,6 +1204,7 @@ int main(int argc, char **argv)
                case PrintAst:
                case PrintFluffy:
                case PrintCaml:
+               case PrintJna:
                case LexTest:
                case PreprocessOnly:
                case ParseOnly:
@@ -1175,6 +1223,10 @@ int main(int argc, char **argv)
                                        ".vcg");
                        outname = outnamebuf;
                        break;
+               case CompileExportIR:
+                       get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
+                       outname = outnamebuf;
+                       break;
                case CompileAssembleLink:
 #ifdef _WIN32
                        outname = "a.exe";
@@ -1218,24 +1270,23 @@ int main(int argc, char **argv)
                }
 
                FILE *preprocessed_in = NULL;
+               filetype_t next_filetype = filetype;
                switch (filetype) {
                        case FILETYPE_C:
-                               filetype = FILETYPE_PREPROCESSED_C;
+                               next_filetype = FILETYPE_PREPROCESSED_C;
                                goto preprocess;
                        case FILETYPE_CXX:
-                               filetype = FILETYPE_PREPROCESSED_CXX;
+                               next_filetype = FILETYPE_PREPROCESSED_CXX;
                                goto preprocess;
                        case FILETYPE_ASSEMBLER:
-                               filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
-                               add_flag(&cppflags_obst, "-x");
-                               add_flag(&cppflags_obst, "assembler-with-cpp");
+                               next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
                                goto preprocess;
 preprocess:
                                /* no support for input on FILE* yet */
                                if (in != NULL)
                                        panic("internal compiler error: in for preprocessor != NULL");
 
-                               preprocessed_in = preprocess(filename);
+                               preprocessed_in = preprocess(filename, filetype);
                                if (mode == PreprocessOnly) {
                                        copy_file(out, preprocessed_in);
                                        int result = pclose(preprocessed_in);
@@ -1248,6 +1299,7 @@ preprocess:
                                }
 
                                in = preprocessed_in;
+                               filetype = next_filetype;
                                break;
 
                        default:
@@ -1270,7 +1322,7 @@ preprocess:
                        switch (standard) {
                                case STANDARD_ANSI:
                                case STANDARD_C89:   c_mode = _C89;                break;
-                               /* TODO ^v determine difference between these two */
+                               /* TODO determine difference between these two */
                                case STANDARD_C90:   c_mode = _C89;                break;
                                case STANDARD_C99:   c_mode = _C89 | _C99;         break;
                                case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
@@ -1310,6 +1362,7 @@ default_cxx_warn:
 do_parsing:
                        c_mode |= features_on;
                        c_mode &= ~features_off;
+
                        init_tokens();
                        translation_unit_t *const unit = do_parsing(in, filename);
 
@@ -1348,10 +1401,14 @@ do_parsing:
                        } else if (mode == PrintCaml) {
                                write_caml_decls(out, unit);
                                continue;
+                       } else if (mode == PrintJna) {
+                               write_jna_decls(out, unit);
+                               continue;
                        }
 
                        translation_unit_to_firm(unit);
 
+graph_built:
                        if (mode == ParseOnly) {
                                continue;
                        }
@@ -1381,11 +1438,21 @@ do_parsing:
                                exit(0);
                        }
 
+                       if (mode == CompileExportIR) {
+                               fclose(out);
+                               ir_export(outname);
+                               exit(0);
+                       }
+
                        gen_firm_finish(asm_out, filename, /*c_mode=*/1,
                                        have_const_functions);
                        if (asm_out != out) {
                                fclose(asm_out);
                        }
+               } else if (filetype == FILETYPE_IR) {
+                       fclose(in);
+                       ir_import(filename);
+                       goto graph_built;
                } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
                        copy_file(asm_out, in);
                        if (in == preprocessed_in) {