1 /*****************************************************************************/
5 /* Top level compiler subroutine */
9 /* (C) 2000-2002 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
40 #include "debugflag.h"
64 /*****************************************************************************/
66 /*****************************************************************************/
70 static void Parse (void)
71 /* Top level parser routine. */
80 /* Parse until end of input */
81 while (CurTok.Tok != TOK_CEOF) {
87 /* Check for empty statements */
88 if (CurTok.Tok == TOK_SEMI) {
93 /* Check for an ASM statement (which is allowed also on global level) */
94 if (CurTok.Tok == TOK_ASM) {
100 /* Check for a #pragma */
101 if (CurTok.Tok == TOK_PRAGMA) {
106 /* Read variable defs and functions */
107 ParseDeclSpec (&Spec, SC_EXTERN | SC_STATIC, T_INT);
109 /* Don't accept illegal storage classes */
110 if ((Spec.StorageClass & SC_AUTO) != 0 ||
111 (Spec.StorageClass & SC_REGISTER) != 0) {
112 Error ("Illegal storage class");
113 Spec.StorageClass = SC_EXTERN | SC_STATIC;
116 /* Check if this is only a type declaration */
117 if (CurTok.Tok == TOK_SEMI) {
118 CheckEmptyDecl (&Spec);
123 /* Check if we must reserve storage for the variable. We do
124 * this if we don't had a storage class given ("int i") or
125 * if the storage class is explicitly specified as static.
126 * This means that "extern int i" will not get storage
129 NeedStorage = (Spec.StorageClass & SC_TYPEDEF) == 0 &&
130 ((Spec.Flags & DS_DEF_STORAGE) != 0 ||
131 (Spec.StorageClass & (SC_STATIC | SC_EXTERN)) == SC_STATIC);
133 /* Read declarations for this type */
140 /* Read the next declaration */
141 ParseDecl (&Spec, &Decl, DM_NEED_IDENT);
142 if (Decl.Ident[0] == '\0') {
147 /* Get the symbol flags */
148 SymFlags = Spec.StorageClass;
149 if (IsTypeFunc (Decl.Type)) {
153 /* We will allocate storage, variable is defined */
154 SymFlags |= SC_STORAGE | SC_DEF;
158 /* Add an entry to the symbol table */
159 Entry = AddGlobalSym (Decl.Ident, Decl.Type, SymFlags);
161 /* Reserve storage for the variable if we need to */
162 if (SymFlags & SC_STORAGE) {
164 /* Get the size of the variable */
165 unsigned Size = SizeOf (Decl.Type);
167 /* Allow initialization */
168 if (CurTok.Tok == TOK_ASSIGN) {
170 /* We cannot initialize types of unknown size, or
171 * void types in non ANSI mode.
174 if (!IsTypeVoid (Decl.Type)) {
175 if (!IsTypeArray (Decl.Type)) {
176 /* Size is unknown and not an array */
177 Error ("Variable `%s' has unknown size", Decl.Ident);
180 /* We cannot declare variables of type void */
181 Error ("Illegal type for variable `%s'", Decl.Ident);
185 /* Switch to the data or rodata segment */
186 if (IsQualConst (Decl.Type)) {
193 g_defgloblabel (Entry->Name);
198 /* Parse the initialization */
199 ParseInit (Entry->Type);
202 if (IsTypeVoid (Decl.Type)) {
203 /* We cannot declare variables of type void */
204 Error ("Illegal type for variable `%s'", Decl.Ident);
205 } else if (Size == 0) {
206 /* Size is unknown */
207 Error ("Variable `%s' has unknown size", Decl.Ident);
210 /* Switch to the BSS segment */
214 g_defgloblabel (Entry->Name);
216 /* Allocate space for uninitialized variable */
217 g_res (SizeOf (Entry->Type));
222 /* Check for end of declaration list */
223 if (CurTok.Tok == TOK_COMMA) {
231 /* Function declaration? */
232 if (Entry && IsTypeFunc (Entry->Type)) {
236 if (CurTok.Tok == TOK_SEMI) {
240 /* Function body definition */
241 if (SymIsDef (Entry)) {
242 Error ("Body for function `%s' has already been defined",
251 /* Must be followed by a semicolon */
260 void Compile (const char* FileName)
261 /* Top level compile routine. Will setup things and call the parser. */
270 /* Since strftime is locale dependent, we need the abbreviated month names
273 static const char MonthNames[12][4] = {
274 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
275 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
278 /* Add some standard paths to the include search path */
279 AddIncludePath ("", INC_USER); /* Current directory */
280 AddIncludePath ("include", INC_SYS);
282 AddIncludePath (CC65_INC, INC_SYS);
284 AddIncludePath ("/usr/lib/cc65/include", INC_SYS);
286 Path = getenv ("CC65_INC");
288 AddIncludePath (Path, INC_SYS | INC_USER);
291 /* Add macros that are always defined */
292 DefineNumericMacro ("__CC65__", (VER_MAJOR * 0x100) + (VER_MINOR * 0x10) + VER_PATCH);
294 /* Strict ANSI macro */
296 DefineNumericMacro ("__STRICT_ANSI__", 1);
299 /* Optimization macros */
301 DefineNumericMacro ("__OPT__", 1);
302 if (FavourSize == 0) {
303 DefineNumericMacro ("__OPT_i__", 1);
306 DefineNumericMacro ("__OPT_r__", 1);
308 if (InlineStdFuncs) {
309 DefineNumericMacro ("__OPT_s__", 1);
313 /* __TIME__ and __DATE__ macros */
315 TM = localtime (&Time);
316 strftime (Buf, sizeof (Buf), "%e %Y", TM);
317 xsprintf (DateStr, sizeof (DateStr), "\"%s %s\"", MonthNames[TM->tm_mon], Buf);
318 strftime (TimeStr, sizeof (TimeStr), "\"%H:%M:%S\"", TM);
319 DefineTextMacro ("__DATE__", DateStr);
320 DefineTextMacro ("__TIME__", TimeStr);
322 /* Initialize the literal pool */
325 /* Create the base lexical level */
328 /* Generate the code generator preamble */
331 /* Open the input file */
332 OpenMainFile (FileName);
334 /* Ok, start the ball rolling... */
337 /* Dump the literal pool. */
340 /* Write imported/exported symbols */
344 PrintLiteralPoolStats (stdout);
345 PrintMacroStats (stdout);
348 /* Leave the main lexical level */
351 /* Print an error report */