/*****************************************************************************/
/* */
-/* compile.c */
+/* compile.c */
/* */
-/* Top level compiler subroutine */
+/* Top level compiler subroutine */
/* */
/* */
/* */
-/* (C) 2000-2004 Ullrich von Bassewitz */
-/* Römerstrasse 52 */
-/* D-70794 Filderstadt */
-/* EMail: uz@cc65.org */
+/* (C) 2000-2013, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
#include "asmlabel.h"
#include "asmstmt.h"
#include "codegen.h"
+#include "codeopt.h"
#include "compile.h"
#include "declare.h"
#include "error.h"
#include "input.h"
#include "litpool.h"
#include "macrotab.h"
+#include "output.h"
#include "pragma.h"
#include "preproc.h"
#include "standard.h"
/*****************************************************************************/
-/* Code */
+/* Code */
/*****************************************************************************/
/* Parse until end of input */
while (CurTok.Tok != TOK_CEOF) {
- DeclSpec Spec;
- Declaration Decl;
- int NeedStorage;
-
- /* Check for empty statements */
- if (CurTok.Tok == TOK_SEMI) {
- NextToken ();
- continue;
- }
-
- /* Check for an ASM statement (which is allowed also on global level) */
- if (CurTok.Tok == TOK_ASM) {
- AsmStatement ();
- ConsumeSemi ();
- continue;
- }
-
- /* Check for a #pragma */
- if (CurTok.Tok == TOK_PRAGMA) {
- DoPragma ();
- continue;
- }
-
- /* Read variable defs and functions */
- ParseDeclSpec (&Spec, SC_EXTERN | SC_STATIC, T_INT);
-
- /* Don't accept illegal storage classes */
+ DeclSpec Spec;
+
+ /* Check for empty statements */
+ if (CurTok.Tok == TOK_SEMI) {
+ NextToken ();
+ continue;
+ }
+
+ /* Disallow ASM statements on global level */
+ if (CurTok.Tok == TOK_ASM) {
+ Error ("__asm__ is not allowed here");
+ /* Parse and remove the statement for error recovery */
+ AsmStatement ();
+ ConsumeSemi ();
+ RemoveGlobalCode ();
+ continue;
+ }
+
+ /* Check for a #pragma */
+ if (CurTok.Tok == TOK_PRAGMA) {
+ DoPragma ();
+ continue;
+ }
+
+ /* Read variable defs and functions */
+ ParseDeclSpec (&Spec, SC_EXTERN | SC_STATIC, T_INT);
+
+ /* Don't accept illegal storage classes */
if ((Spec.StorageClass & SC_TYPE) == 0) {
if ((Spec.StorageClass & SC_AUTO) != 0 ||
(Spec.StorageClass & SC_REGISTER) != 0) {
}
}
- /* Check if this is only a type declaration */
- if (CurTok.Tok == TOK_SEMI) {
- CheckEmptyDecl (&Spec);
- NextToken ();
- continue;
- }
-
- /* Check if we must reserve storage for the variable. We do
- * this if we don't had a storage class given ("int i") or
- * if the storage class is explicitly specified as static.
- * This means that "extern int i" will not get storage
- * allocated.
- */
- NeedStorage = (Spec.StorageClass & SC_TYPEDEF) == 0 &&
- ((Spec.Flags & DS_DEF_STORAGE) != 0 ||
- (Spec.StorageClass & (SC_STATIC | SC_EXTERN)) == SC_STATIC);
-
- /* Read declarations for this type */
- Entry = 0;
- comma = 0;
- while (1) {
-
- unsigned SymFlags;
-
- /* Read the next declaration */
- ParseDecl (&Spec, &Decl, DM_NEED_IDENT);
- if (Decl.Ident[0] == '\0') {
- NextToken ();
- break;
- }
-
- /* Get the symbol flags */
- SymFlags = Spec.StorageClass;
- if (IsTypeFunc (Decl.Type)) {
- SymFlags |= SC_FUNC;
- } else if ((SymFlags & SC_TYPEDEF) == 0) {
- if ((Spec.Flags & DS_DEF_TYPE) != 0 && IS_Get (&Standard) >= STD_C99) {
- Warning ("Implicit `int' is an obsolete feature");
+ /* Check if this is only a type declaration */
+ if (CurTok.Tok == TOK_SEMI) {
+ CheckEmptyDecl (&Spec);
+ NextToken ();
+ continue;
+ }
+
+ /* Read declarations for this type */
+ Entry = 0;
+ comma = 0;
+ while (1) {
+
+ Declaration Decl;
+
+ /* Read the next declaration */
+ ParseDecl (&Spec, &Decl, DM_NEED_IDENT);
+ if (Decl.Ident[0] == '\0') {
+ NextToken ();
+ break;
+ }
+
+ /* Check if we must reserve storage for the variable. We do this,
+ **
+ ** - if it is not a typedef or function,
+ ** - if we don't had a storage class given ("int i")
+ ** or the storage class is explicitly specified as static.
+ **
+ ** This means that "extern int i;" will not get storage allocated.
+ */
+ if ((Decl.StorageClass & SC_FUNC) != SC_FUNC &&
+ (Decl.StorageClass & SC_TYPEMASK) != SC_TYPEDEF &&
+ ((Spec.Flags & DS_DEF_STORAGE) != 0 ||
+ (Decl.StorageClass & (SC_EXTERN|SC_STATIC)) == SC_STATIC)) {
+
+ /* We will allocate storage */
+ Decl.StorageClass |= SC_STORAGE | SC_DEF;
+ }
+
+ /* If this is a function declarator that is not followed by a comma
+ ** or semicolon, it must be followed by a function body. If this is
+ ** the case, convert an empty parameter list into one accepting no
+ ** parameters (same as void) as required by the standard.
+ */
+ if ((Decl.StorageClass & SC_FUNC) != 0 &&
+ (CurTok.Tok != TOK_COMMA) &&
+ (CurTok.Tok != TOK_SEMI)) {
+
+ FuncDesc* D = GetFuncDesc (Decl.Type);
+ if (D->Flags & FD_EMPTY) {
+ D->Flags = (D->Flags & ~(FD_EMPTY | FD_VARIADIC)) | FD_VOID_PARAM;
}
- if (NeedStorage) {
- /* We will allocate storage, variable is defined */
- SymFlags |= SC_STORAGE | SC_DEF;
- }
- }
-
- /* Add an entry to the symbol table */
- Entry = AddGlobalSym (Decl.Ident, Decl.Type, SymFlags);
-
- /* Reserve storage for the variable if we need to */
- if (SymFlags & SC_STORAGE) {
-
- /* Get the size of the variable */
- unsigned Size = SizeOf (Decl.Type);
-
- /* Allow initialization */
- if (CurTok.Tok == TOK_ASSIGN) {
-
- /* We cannot initialize types of unknown size, or
- * void types in non ANSI mode.
- */
- if (Size == 0) {
- if (!IsTypeVoid (Decl.Type)) {
- if (!IsTypeArray (Decl.Type)) {
- /* Size is unknown and not an array */
- Error ("Variable `%s' has unknown size", Decl.Ident);
- }
- } else if (IS_Get (&Standard) != STD_CC65) {
- /* We cannot declare variables of type void */
- Error ("Illegal type for variable `%s'", Decl.Ident);
- }
- }
-
- /* Switch to the data or rodata segment */
- if (IsQualConst (Decl.Type)) {
- g_userodata ();
- } else {
- g_usedata ();
- }
-
- /* Define a label */
- g_defgloblabel (Entry->Name);
-
- /* Skip the '=' */
- NextToken ();
-
- /* Parse the initialization */
- ParseInit (Entry->Type);
- } else {
-
- if (IsTypeVoid (Decl.Type)) {
- /* We cannot declare variables of type void */
- Error ("Illegal type for variable `%s'", Decl.Ident);
+ }
+
+ /* Add an entry to the symbol table */
+ Entry = AddGlobalSym (Decl.Ident, Decl.Type, Decl.StorageClass);
+
+ /* Add declaration attributes */
+ SymUseAttr (Entry, &Decl);
+
+ /* Reserve storage for the variable if we need to */
+ if (Decl.StorageClass & SC_STORAGE) {
+
+ /* Get the size of the variable */
+ unsigned Size = SizeOf (Decl.Type);
+
+ /* Allow initialization */
+ if (CurTok.Tok == TOK_ASSIGN) {
+
+ /* We cannot initialize types of unknown size, or
+ ** void types in ISO modes.
+ */
+ if (Size == 0) {
+ if (!IsTypeVoid (Decl.Type)) {
+ if (!IsTypeArray (Decl.Type)) {
+ /* Size is unknown and not an array */
+ Error ("Variable `%s' has unknown size", Decl.Ident);
+ }
+ } else if (IS_Get (&Standard) != STD_CC65) {
+ /* We cannot declare variables of type void */
+ Error ("Illegal type for variable `%s'", Decl.Ident);
+ }
+ }
+
+ /* Switch to the data or rodata segment. For arrays, check
+ ** the element qualifiers, since not the array but its
+ ** elements are const.
+ */
+ if (IsQualConst (GetBaseElementType (Decl.Type))) {
+ g_userodata ();
+ } else {
+ g_usedata ();
+ }
+
+ /* Define a label */
+ g_defgloblabel (Entry->Name);
+
+ /* Skip the '=' */
+ NextToken ();
+
+ /* Parse the initialization */
+ ParseInit (Entry->Type);
+ } else {
+
+ if (IsTypeVoid (Decl.Type)) {
+ /* We cannot declare variables of type void */
+ Error ("Illegal type for variable `%s'", Decl.Ident);
Entry->Flags &= ~(SC_STORAGE | SC_DEF);
} else if (Size == 0) {
- /* Size is unknown. Is it an array? */
+ /* Size is unknown. Is it an array? */
if (!IsTypeArray (Decl.Type)) {
Error ("Variable `%s' has unknown size", Decl.Ident);
}
Entry->Flags &= ~(SC_STORAGE | SC_DEF);
- }
+ }
/* Allocate storage if it is still needed */
if (Entry->Flags & SC_STORAGE) {
/* Allocate space for uninitialized variable */
g_res (Size);
}
- }
-
- }
-
- /* Check for end of declaration list */
- if (CurTok.Tok == TOK_COMMA) {
- NextToken ();
- comma = 1;
- } else {
- break;
- }
- }
-
- /* Function declaration? */
- if (Entry && IsTypeFunc (Entry->Type)) {
-
- /* Function */
- if (!comma) {
- if (CurTok.Tok == TOK_SEMI) {
- /* Prototype only */
- NextToken ();
- } else if (Entry) {
- /* Function body definition */
+ }
+
+ }
+
+ /* Check for end of declaration list */
+ if (CurTok.Tok == TOK_COMMA) {
+ NextToken ();
+ comma = 1;
+ } else {
+ break;
+ }
+ }
+
+ /* Function declaration? */
+ if (Entry && IsTypeFunc (Entry->Type)) {
+
+ /* Function */
+ if (!comma) {
+ if (CurTok.Tok == TOK_SEMI) {
+ /* Prototype only */
+ NextToken ();
+ } else {
+
+ /* Function body. Check for duplicate function definitions */
if (SymIsDef (Entry)) {
Error ("Body for function `%s' has already been defined",
Entry->Name);
}
+
+ /* Parse the function body */
NewFunc (Entry);
- }
- }
+ }
+ }
- } else {
+ } else {
- /* Must be followed by a semicolon */
- ConsumeSemi ();
+ /* Must be followed by a semicolon */
+ ConsumeSemi ();
- }
+ }
}
}
struct tm* TM;
/* Since strftime is locale dependent, we need the abbreviated month names
- * in english.
- */
+ ** in english.
+ */
static const char MonthNames[12][4] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
/* Add macros that are always defined */
- DefineNumericMacro ("__CC65__", VERSION);
+ DefineNumericMacro ("__CC65__", GetVersionAsNumber ());
/* Language standard that is supported */
DefineNumericMacro ("__CC65_STD_C89__", STD_C89);
DefineNumericMacro ("__CC65_STD__", IS_Get (&Standard));
/* Optimization macros. Since no source code has been parsed for now, the
- * IS_Get functions access the values in effect now, regardless of any
- * changes using #pragma later.
- */
+ ** IS_Get functions access the values in effect now, regardless of any
+ ** changes using #pragma later.
+ */
if (IS_Get (&Optimize)) {
long CodeSize = IS_Get (&CodeSizeFactor);
- DefineNumericMacro ("__OPT__", 1);
- if (CodeSize > 100) {
- DefineNumericMacro ("__OPT_i__", CodeSize);
- }
- if (IS_Get (&EnableRegVars)) {
- DefineNumericMacro ("__OPT_r__", 1);
- }
- if (IS_Get (&InlineStdFuncs)) {
- DefineNumericMacro ("__OPT_s__", 1);
- }
+ DefineNumericMacro ("__OPT__", 1);
+ if (CodeSize > 100) {
+ DefineNumericMacro ("__OPT_i__", CodeSize);
+ }
+ if (IS_Get (&EnableRegVars)) {
+ DefineNumericMacro ("__OPT_r__", 1);
+ }
+ if (IS_Get (&InlineStdFuncs)) {
+ DefineNumericMacro ("__OPT_s__", 1);
+ }
}
/* __TIME__ and __DATE__ macros */
DefineTextMacro ("__DATE__", DateStr);
DefineTextMacro ("__TIME__", TimeStr);
- /* Initialize the literal pool */
- InitLiteralPool ();
+ /* Other standard macros */
+ /* DefineNumericMacro ("__STDC__", 1); <- not now */
+ DefineNumericMacro ("__STDC_HOSTED__", 1);
/* Create the base lexical level */
EnterGlobalLevel ();
+ /* Create the global code and data segments */
+ CreateGlobalSegments ();
+
+ /* Initialize the literal pool */
+ InitLiteralPool ();
+
/* Generate the code generator preamble */
g_preamble ();
/* Are we supposed to compile or just preprocess the input? */
if (PreprocessOnly) {
+ /* Open the file */
+ OpenOutputFile ();
+
+ /* Preprocess each line and write it to the output file */
while (NextLine ()) {
Preprocess ();
- printf ("%.*s\n", SB_GetLen (Line), SB_GetConstBuf (Line));
+ WriteOutput ("%.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
}
- if (Debug) {
- PrintMacroStats (stdout);
- }
+ /* Close the output file */
+ CloseOutputFile ();
} else {
/* Ok, start the ball rolling... */
Parse ();
- /* Dump the literal pool. */
- DumpLiteralPool ();
-
- /* Write imported/exported symbols */
- EmitExternals ();
-
- if (Debug) {
- PrintLiteralPoolStats (stdout);
- PrintMacroStats (stdout);
- }
-
}
- /* Leave the main lexical level */
- LeaveGlobalLevel ();
+ if (Debug) {
+ PrintMacroStats (stdout);
+ }
/* Print an error report */
ErrorReport ();
+void FinishCompile (void)
+/* Emit literals, externals, debug info, do cleanup and optimizations */
+{
+ SymTable* SymTab;
+ SymEntry* Func;
+
+ /* Walk over all functions, doing cleanup, optimizations ... */
+ SymTab = GetGlobalSymTab ();
+ Func = SymTab->SymHead;
+ while (Func) {
+ if (SymIsOutputFunc (Func)) {
+ /* Function which is defined and referenced or extern */
+ MoveLiteralPool (Func->V.F.LitPool);
+ CS_MergeLabels (Func->V.F.Seg->Code);
+ RunOpt (Func->V.F.Seg->Code);
+ }
+ Func = Func->NextSym;
+ }
+
+ /* Output the literal pool */
+ OutputLiteralPool ();
+
+ /* Emit debug infos if enabled */
+ EmitDebugInfo ();
+ /* Write imported/exported symbols */
+ EmitExternals ();
+
+ /* Leave the main lexical level */
+ LeaveGlobalLevel ();
+}
projects / cc65 / blobdiff