/*****************************************************************************/
/* */
-/* locals.c */
+/* locals.c */
/* */
-/* Local variable handling for the cc65 C compiler */
+/* Local variable handling for the cc65 C compiler */
/* */
/* */
/* */
-/* (C) 2000 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (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 "../common/xmalloc.h"
+/* common */
+#include "xmalloc.h"
+#include "xsprintf.h"
+/* cc65 */
#include "anonname.h"
#include "asmlabel.h"
#include "codegen.h"
#include "expr.h"
#include "function.h"
#include "global.h"
-#include "symtab.h"
+#include "loadexpr.h"
#include "locals.h"
+#include "stackptr.h"
+#include "standard.h"
+#include "symtab.h"
+#include "typeconv.h"
+#include "input.h"
/*****************************************************************************/
-/* Data */
+/* Code */
/*****************************************************************************/
-/* Register variable management */
-unsigned MaxRegSpace = 6; /* Maximum space available */
-static unsigned RegOffs = 0; /* Offset into register space */
-static const SymEntry** RegSyms = 0; /* The register variables */
-static unsigned RegSymCount = 0; /* Number of register variables */
+static unsigned AllocLabel (void (*UseSeg) ())
+/* Switch to a segment, define a local label and return it */
+{
+ unsigned Label;
+ /* Switch to the segment */
+ UseSeg ();
+ /* Define the variable label */
+ Label = GetLocalLabel ();
+ g_defdatalabel (Label);
-/*****************************************************************************/
-/* Code */
-/*****************************************************************************/
+ /* Return the label */
+ return Label;
+}
-void InitRegVars (void)
-/* Initialize register variable control data */
+static void AllocStorage (unsigned Label, void (*UseSeg) (), unsigned Size)
+/* Reserve Size bytes of BSS storage prefixed by a local label. */
{
- /* If the register space is zero, bail out */
- if (MaxRegSpace == 0) {
- return;
- }
+ /* Switch to the segment */
+ UseSeg ();
+
+ /* Define the variable label */
+ g_defdatalabel (Label);
- /* The maximum number of register variables is equal to the register
- * variable space available. So allocate one pointer per byte. This
- * will usually waste some space but we don't need to dynamically
- * grow the array.
- */
- RegSyms = xmalloc (MaxRegSpace * sizeof (RegSyms[0]));
- RegOffs = MaxRegSpace;
+ /* Reserve space for the data */
+ g_res (Size);
}
-void DoneRegVars (void)
-/* Free the register variables */
+static void ParseRegisterDecl (Declaration* Decl, int Reg)
+/* Parse the declaration of a register variable. Reg is the offset of the
+** variable in the register bank.
+*/
{
- xfree (RegSyms);
- RegSyms = 0;
- RegOffs = MaxRegSpace;
- RegSymCount = 0;
-}
+ SymEntry* Sym;
+ /* Determine if this is a compound variable */
+ int IsCompound = IsClassStruct (Decl->Type) || IsTypeArray (Decl->Type);
+ /* Get the size of the variable */
+ unsigned Size = SizeOf (Decl->Type);
-static int AllocRegVar (const SymEntry* Sym, const type* tarray)
-/* Allocate a register variable with the given amount of storage. If the
- * allocation was successful, return the offset of the register variable in
- * the register bank (zero page storage). If there is no register space left,
- * return -1.
- */
-{
- /* Maybe register variables are disabled... */
- if (EnableRegVars) {
-
- /* Get the size of the variable */
- unsigned Size = SizeOf (tarray);
-
- /* Do we have space left? */
- if (RegOffs >= Size) {
-
- /* Space left. We allocate the variables from high to low addresses,
- * so the adressing is compatible with the saved values on stack.
- * This allows shorter code when saving/restoring the variables.
- */
- RegOffs -= Size;
- RegSyms [RegSymCount++] = Sym;
- return RegOffs;
- }
- }
+ /* Save the current contents of the register variable on stack */
+ F_AllocLocalSpace (CurrentFunc);
+ g_save_regvars (Reg, Size);
- /* No space left or no allocation */
- return -1;
-}
+ /* Add the symbol to the symbol table. We do that now, because for register
+ ** variables the current stack pointer is implicitly used as location for
+ ** the save area.
+ */
+ Sym = AddLocalSym (Decl->Ident, Decl->Type, Decl->StorageClass, Reg);
+ /* Check for an optional initialization */
+ if (CurTok.Tok == TOK_ASSIGN) {
+ ExprDesc Expr;
-static void ParseOneDecl (const DeclSpec* Spec)
-/* Parse one variable declaration */
-{
- int Size; /* Size of an auto variable */
- int SC; /* Storage class for symbol */
- int SymData = 0; /* Symbol data (offset, label name, ...) */
- unsigned flags = 0; /* Code generator flags */
- Declaration Decl; /* Declaration data structure */
+ /* Skip the '=' */
+ NextToken ();
- /* Remember the storage class for the new symbol */
- SC = Spec->StorageClass;
+ /* Special handling for compound types */
+ if (IsCompound) {
- /* Read the declaration */
- ParseDecl (Spec, &Decl, DM_NEED_IDENT);
+ /* Switch to read only data and define a label for the
+ ** initialization data.
+ */
+ unsigned InitLabel = AllocLabel (g_userodata);
- /* Set the correct storage class for functions */
- if (IsFunc (Decl.Type)) {
- /* Function prototypes are always external */
- if ((SC & SC_EXTERN) == 0) {
- Warning (WARN_FUNC_MUST_BE_EXTERN);
- }
- SC |= SC_FUNC | SC_EXTERN;
+ /* Parse the initialization generating a memory image of the
+ ** data in the RODATA segment. The function does return the size
+ ** of the initialization data, which may be greater than the
+ ** actual size of the type, if the type is a structure with a
+ ** flexible array member that has been initialized. Since we must
+ ** know the size of the data in advance for register variables,
+ ** we cannot allow that here.
+ */
+ if (ParseInit (Sym->Type) != Size) {
+ Error ("Cannot initialize flexible array members of storage class `register'");
+ }
+
+ /* Generate code to copy this data into the variable space */
+ g_initregister (InitLabel, Reg, Size);
+
+ } else {
+ /* Parse the expression */
+ hie1 (&Expr);
+
+ /* Convert it to the target type */
+ TypeConversion (&Expr, Sym->Type);
+
+ /* Load the value into the primary */
+ LoadExpr (CF_NONE, &Expr);
+
+ /* Store the value into the variable */
+ g_putstatic (CF_REGVAR | TypeOf (Sym->Type), Reg, 0);
+
+ }
+
+ /* Mark the variable as referenced */
+ Sym->Flags |= SC_REF;
}
- /* If we don't have a name, this was flagged as an error earlier.
- * To avoid problems later, use an anonymous name here.
- */
- if (Decl.Ident[0] == '\0') {
- AnonName (Decl.Ident, "param");
+ /* Cannot allocate a variable of zero size */
+ if (Size == 0) {
+ Error ("Variable `%s' has unknown size", Decl->Ident);
}
+}
+
- /* Handle anything that needs storage (no functions, no typdefs) */
- if ((SC & SC_FUNC) != SC_FUNC && (SC & SC_TYPEDEF) != SC_TYPEDEF) {
- /* Get the size of the variable */
- Size = SizeOf (Decl.Type);
+static void ParseAutoDecl (Declaration* Decl)
+/* Parse the declaration of an auto variable. */
+{
+ unsigned Flags;
+ SymEntry* Sym;
+
+ /* Determine if this is a compound variable */
+ int IsCompound = IsClassStruct (Decl->Type) || IsTypeArray (Decl->Type);
+
+ /* Get the size of the variable */
+ unsigned Size = SizeOf (Decl->Type);
+
+ /* Check if this is a variable on the stack or in static memory */
+ if (IS_Get (&StaticLocals) == 0) {
- if (SC & (SC_AUTO | SC_REGISTER)) {
+ /* Add the symbol to the symbol table. The stack offset we use here
+ ** may get corrected later.
+ */
+ Sym = AddLocalSym (Decl->Ident, Decl->Type,
+ Decl->StorageClass,
+ F_GetStackPtr (CurrentFunc) - (int) Size);
- /* Auto variable */
- if (StaticLocals == 0) {
+ /* Check for an optional initialization */
+ if (CurTok.Tok == TOK_ASSIGN) {
- /* Change SC in case it was register */
- SC = (SC & ~SC_REGISTER) | SC_AUTO;
- if (curtok == TOK_ASSIGN) {
+ ExprDesc Expr;
- struct expent lval;
+ /* Skip the '=' */
+ NextToken ();
- /* Allocate previously reserved local space */
- AllocLocalSpace (CurrentFunc);
+ /* Special handling for compound types */
+ if (IsCompound) {
- /* Switch to the code segment. */
- g_usecode ();
+ /* Switch to read only data and define a label for the
+ ** initialization data.
+ */
+ unsigned InitLabel = AllocLabel (g_userodata);
- /* Skip the '=' */
- NextToken ();
+ /* Parse the initialization generating a memory image of the
+ ** data in the RODATA segment. The function will return the
+ ** actual size of the initialization data, which may be
+ ** greater than the size of the variable if it is a struct
+ ** that contains a flexible array member and we're not in
+ ** ANSI mode.
+ */
+ Size = ParseInit (Sym->Type);
- /* Setup the type flags for the assignment */
- flags = Size == 1? CF_FORCECHAR : CF_NONE;
+ /* Now reserve space for the variable on the stack and correct
+ ** the offset in the symbol table entry.
+ */
+ Sym->V.Offs = F_ReserveLocalSpace (CurrentFunc, Size);
- /* Get the expression into the primary */
- if (evalexpr (flags, hie1, &lval) == 0) {
- /* Constant expression. Adjust the types */
- assignadjust (Decl.Type, &lval);
- flags |= CF_CONST;
- } else {
- /* Expression is not constant and in the primary */
- assignadjust (Decl.Type, &lval);
- }
+ /* Next, allocate the space on the stack. This means that the
+ ** variable is now located at offset 0 from the current sp.
+ */
+ F_AllocLocalSpace (CurrentFunc);
- /* Push the value */
- g_push (flags | TypeOf (Decl.Type), lval.e_const);
+ /* Generate code to copy the initialization data into the
+ ** variable space
+ */
+ g_initauto (InitLabel, Size);
- /* Mark the variable as referenced */
- SC |= SC_REF;
+ } else {
- /* Variable is located at the current SP */
- SymData = oursp;
+ /* Allocate previously reserved local space */
+ F_AllocLocalSpace (CurrentFunc);
- } else {
- /* Non-initialized local variable. Just keep track of
- * the space needed.
- */
- SymData = ReserveLocalSpace (CurrentFunc, Size);
- }
+ /* Setup the type flags for the assignment */
+ Flags = (Size == SIZEOF_CHAR)? CF_FORCECHAR : CF_NONE;
- } else {
+ /* Parse the expression */
+ hie1 (&Expr);
- /* Static local variables. */
- SC = (SC & ~(SC_REGISTER | SC_AUTO)) | SC_STATIC;
+ /* Convert it to the target type */
+ TypeConversion (&Expr, Sym->Type);
- /* Put them into the BSS */
- g_usebss ();
+ /* If the value is not const, load it into the primary.
+ ** Otherwise pass the information to the code generator.
+ */
+ if (ED_IsConstAbsInt (&Expr)) {
+ Flags |= CF_CONST;
+ } else {
+ LoadExpr (CF_NONE, &Expr);
+ ED_MakeRVal (&Expr);
+ }
- /* Define the variable label */
- SymData = GetLabel ();
- g_defloclabel (SymData);
+ /* Push the value */
+ g_push (Flags | TypeOf (Sym->Type), Expr.IVal);
- /* Reserve space for the data */
- g_res (Size);
+ }
- /* Allow assignments */
- if (curtok == TOK_ASSIGN) {
+ /* Mark the variable as referenced */
+ Sym->Flags |= SC_REF;
- struct expent lval;
+ /* Make note of auto variables initialized in current block.
+ ** We abuse the Collection somewhat by using it to store line
+ ** numbers.
+ */
+ CollReplace (&CurrentFunc->LocalsBlockStack,
+ (void *)(size_t)GetCurrentLine (),
+ CollCount (&CurrentFunc->LocalsBlockStack) - 1);
- /* Switch to the code segment. */
- g_usecode ();
+ } else {
+ /* Non-initialized local variable. Just keep track of
+ ** the space needed.
+ */
+ F_ReserveLocalSpace (CurrentFunc, Size);
+ }
- /* Skip the '=' */
- NextToken ();
+ } else {
- /* Get the expression into the primary */
- expression1 (&lval);
+ unsigned DataLabel;
- /* Make type adjustments if needed */
- assignadjust (Decl.Type, &lval);
- /* Setup the type flags for the assignment */
- flags = TypeOf (Decl.Type);
- if (Size == 1) {
- flags |= CF_FORCECHAR;
- }
+ /* Static local variables. */
+ Decl->StorageClass = (Decl->StorageClass & ~SC_AUTO) | SC_STATIC;
- /* Store the value into the variable */
- g_putstatic (flags, SymData, 0);
+ /* Generate a label, but don't define it */
+ DataLabel = GetLocalLabel ();
- /* Mark the variable as referenced */
- SC |= SC_REF;
- }
- }
+ /* Add the symbol to the symbol table. */
+ Sym = AddLocalSym (Decl->Ident, Decl->Type, Decl->StorageClass, DataLabel);
- } else if ((SC & SC_STATIC) == SC_STATIC) {
+ /* Allow assignments */
+ if (CurTok.Tok == TOK_ASSIGN) {
- /* Static data */
- if (curtok == TOK_ASSIGN) {
+ ExprDesc Expr;
- /* Initialization ahead, switch to data segment */
- g_usedata ();
+ /* Skip the '=' */
+ NextToken ();
- /* Define the variable label */
- SymData = GetLabel ();
- g_defloclabel (SymData);
+ if (IsCompound) {
- /* Skip the '=' */
- NextToken ();
+ /* Switch to read only data and define a label for the
+ ** initialization data.
+ */
+ unsigned InitLabel = AllocLabel (g_userodata);
- /* Allow initialization of static vars */
- ParseInit (Decl.Type);
+ /* Parse the initialization generating a memory image of the
+ ** data in the RODATA segment.
+ */
+ Size = ParseInit (Sym->Type);
- /* Mark the variable as referenced */
- SC |= SC_REF;
+ /* Allocate space for the variable */
+ AllocStorage (DataLabel, g_usebss, Size);
- } else {
+ /* Generate code to copy this data into the variable space */
+ g_initstatic (InitLabel, DataLabel, Size);
- /* Uninitialized data, use BSS segment */
- g_usebss ();
+ } else {
- /* Define the variable label */
- SymData = GetLabel ();
- g_defloclabel (SymData);
+ /* Allocate space for the variable */
+ AllocStorage (DataLabel, g_usebss, Size);
- /* Reserve space for the data */
- g_res (Size);
+ /* Parse the expression */
+ hie1 (&Expr);
- }
- }
+ /* Convert it to the target type */
+ TypeConversion (&Expr, Sym->Type);
- }
+ /* Load the value into the primary */
+ LoadExpr (CF_NONE, &Expr);
+
+ /* Store the value into the variable */
+ g_putstatic (TypeOf (Sym->Type), DataLabel, 0);
+ }
+
+ /* Mark the variable as referenced */
+ Sym->Flags |= SC_REF;
+
+ } else {
- /* If the symbol is not marked as external, it will be defined */
- if ((SC & SC_EXTERN) == 0) {
- SC |= SC_DEF;
+ /* No assignment - allocate a label and space for the variable */
+ AllocStorage (DataLabel, g_usebss, Size);
+
+ }
}
- /* Add the symbol to the symbol table */
- AddLocalSym (Decl.Ident, Decl.Type, SC, SymData);
+ /* Cannot allocate a variable of zero size */
+ if (Size == 0) {
+ Error ("Variable `%s' has unknown size", Decl->Ident);
+ }
}
-void DeclareLocals (void)
-/* Declare local variables and types. */
+static void ParseStaticDecl (Declaration* Decl)
+/* Parse the declaration of a static variable. */
{
- /* Loop until we don't find any more variables */
- while (1) {
+ unsigned Size;
- /* Check variable declarations. We need to distinguish between a
- * default int type and the end of variable declarations. So we
- * will do the following: If there is no explicit storage class
- * specifier *and* no explicit type given, it is assume that we
- * have reached the end of declarations.
- */
- DeclSpec Spec;
- ParseDeclSpec (&Spec, SC_AUTO, T_INT);
- if ((Spec.Flags & DS_DEF_STORAGE) != 0 && (Spec.Flags & DS_DEF_TYPE) != 0) {
- break;
- }
-
- /* Accept type only declarations */
- if (curtok == TOK_SEMI) {
- /* Type declaration only */
- CheckEmptyDecl (&Spec);
- NextToken ();
- continue;
- }
-
- /* Parse a comma separated variable list */
- while (1) {
-
- /* Parse one declaration */
- ParseOneDecl (&Spec);
-
- /* Check if there is more */
- if (curtok == TOK_COMMA) {
- /* More to come */
- NextToken ();
- } else {
- /* Done */
- break;
- }
- }
-
- /* A semicolon must follow */
- ConsumeSemi ();
- }
+ /* Generate a label, but don't define it */
+ unsigned DataLabel = GetLocalLabel ();
- /* Be sure to allocate any reserved space for locals */
- AllocLocalSpace (CurrentFunc);
+ /* Add the symbol to the symbol table. */
+ SymEntry* Sym = AddLocalSym (Decl->Ident, Decl->Type,
+ Decl->StorageClass,
+ DataLabel);
- /* In case we switched away from code segment, switch back now */
- g_usecode ();
-}
+ /* Static data */
+ if (CurTok.Tok == TOK_ASSIGN) {
+ /* Initialization ahead, switch to data segment and define the label.
+ ** For arrays, we need to check the elements of the array for
+ ** constness, not the array itself.
+ */
+ if (IsQualConst (GetBaseElementType (Sym->Type))) {
+ g_userodata ();
+ } else {
+ g_usedata ();
+ }
+ g_defdatalabel (DataLabel);
+ /* Skip the '=' */
+ NextToken ();
-void RestoreRegVars (int HaveResult)
-/* Restore the register variables for the local function if there are any.
- * The parameter tells us if there is a return value in ax, in that case,
- * the accumulator must be saved across the restore.
- */
-{
- unsigned I, J;
- int Bytes, Offs;
+ /* Allow initialization of static vars */
+ Size = ParseInit (Sym->Type);
- /* If we don't have register variables in this function, bail out early */
- if (RegSymCount == 0) {
- return;
- }
+ /* Mark the variable as referenced */
+ Sym->Flags |= SC_REF;
+
+ } else {
+
+ /* Get the size of the variable */
+ Size = SizeOf (Decl->Type);
+
+ /* Allocate a label and space for the variable in the BSS segment */
+ AllocStorage (DataLabel, g_usebss, Size);
- /* Save the accumulator if needed */
- if (!HasVoidReturn (CurrentFunc) && HaveResult) {
- g_save (CF_CHAR | CF_FORCECHAR);
}
- /* Walk through all variables. If there are several variables in a row
- * (that is, with increasing stack offset), restore them in one chunk.
- */
- I = 0;
- while (I < RegSymCount) {
+ /* Cannot allocate a variable of zero size */
+ if (Size == 0) {
+ Error ("Variable `%s' has unknown size", Decl->Ident);
+ }
+}
- /* Check for more than one variable */
- const SymEntry* Sym = RegSyms[I];
- Offs = Sym->V.Offs;
- Bytes = SizeOf (Sym->Type);
- J = I+1;
- while (J < RegSymCount) {
- /* Get the next symbol */
- const SymEntry* NextSym = RegSyms [J];
+static void ParseOneDecl (const DeclSpec* Spec)
+/* Parse one variable declaration */
+{
+ Declaration Decl; /* Declaration data structure */
- /* Get the size */
- int Size = SizeOf (NextSym->Type);
- /* Adjacent variable? */
- if (NextSym->V.Offs + Size != Offs) {
- /* No */
- break;
- }
+ /* Read the declaration */
+ ParseDecl (Spec, &Decl, DM_NEED_IDENT);
- /* Adjacent variable */
- Bytes += Size;
- Offs -= Size;
- Sym = NextSym;
- ++J;
- }
+ /* Set the correct storage class for functions */
+ if ((Decl.StorageClass & SC_FUNC) == SC_FUNC) {
+ /* Function prototypes are always external */
+ if ((Decl.StorageClass & SC_EXTERN) == 0) {
+ Warning ("Function must be extern");
+ }
+ Decl.StorageClass |= SC_EXTERN;
+ }
- /* Restore the memory range */
- g_restore_regvars (Offs, Sym->V.Offs, Bytes);
+ /* If we don't have a name, this was flagged as an error earlier.
+ ** To avoid problems later, use an anonymous name here.
+ */
+ if (Decl.Ident[0] == '\0') {
+ AnonName (Decl.Ident, "param");
+ }
- /* Next round */
- I = J;
+ /* If the symbol is not marked as external, it will be defined now */
+ if ((Decl.StorageClass & SC_EXTERN) == 0) {
+ Decl.StorageClass |= SC_DEF;
}
- /* Restore the accumulator if needed */
- if (!HasVoidReturn (CurrentFunc) && HaveResult) {
- g_restore (CF_CHAR | CF_FORCECHAR);
+ /* Handle anything that needs storage (no functions, no typdefs) */
+ if ((Decl.StorageClass & SC_FUNC) != SC_FUNC &&
+ (Decl.StorageClass & SC_TYPEMASK) != SC_TYPEDEF) {
+
+ /* If we have a register variable, try to allocate a register and
+ ** convert the declaration to "auto" if this is not possible.
+ */
+ int Reg = 0; /* Initialize to avoid gcc complains */
+ if ((Decl.StorageClass & SC_REGISTER) != 0 &&
+ (Reg = F_AllocRegVar (CurrentFunc, Decl.Type)) < 0) {
+ /* No space for this register variable, convert to auto */
+ Decl.StorageClass = (Decl.StorageClass & ~SC_REGISTER) | SC_AUTO;
+ }
+
+ /* Check the variable type */
+ if ((Decl.StorageClass & SC_REGISTER) == SC_REGISTER) {
+ /* Register variable */
+ ParseRegisterDecl (&Decl, Reg);
+ } else if ((Decl.StorageClass & SC_AUTO) == SC_AUTO) {
+ /* Auto variable */
+ ParseAutoDecl (&Decl);
+ } else if ((Decl.StorageClass & SC_EXTERN) == SC_EXTERN) {
+ /* External identifier - may not get initialized */
+ if (CurTok.Tok == TOK_ASSIGN) {
+ Error ("Cannot initialize externals");
+ }
+ /* Add the external symbol to the symbol table */
+ AddLocalSym (Decl.Ident, Decl.Type, Decl.StorageClass, 0);
+ } else if ((Decl.StorageClass & SC_STATIC) == SC_STATIC) {
+ /* Static variable */
+ ParseStaticDecl (&Decl);
+ } else {
+ Internal ("Invalid storage class in ParseOneDecl: %04X", Decl.StorageClass);
+ }
+
+ } else {
+
+ /* Add the symbol to the symbol table */
+ AddLocalSym (Decl.Ident, Decl.Type, Decl.StorageClass, 0);
+
}
}
+void DeclareLocals (void)
+/* Declare local variables and types. */
+{
+ /* Remember the current stack pointer */
+ int InitialStack = StackPtr;
+
+ /* A place to store info about potential initializations of auto variables */
+ CollAppend (&CurrentFunc->LocalsBlockStack, 0);
+
+ /* Loop until we don't find any more variables */
+ while (1) {
+
+ /* Check variable declarations. We need to distinguish between a
+ ** default int type and the end of variable declarations. So we
+ ** will do the following: If there is no explicit storage class
+ ** specifier *and* no explicit type given, *and* no type qualifiers
+ ** have been read, it is assumed that we have reached the end of
+ ** declarations.
+ */
+ DeclSpec Spec;
+ ParseDeclSpec (&Spec, SC_AUTO, T_INT);
+ if ((Spec.Flags & DS_DEF_STORAGE) != 0 && /* No storage spec */
+ (Spec.Flags & DS_DEF_TYPE) != 0 && /* No type given */
+ GetQualifier (Spec.Type) == T_QUAL_NONE) { /* No type qualifier */
+ break;
+ }
+
+ /* Accept type only declarations */
+ if (CurTok.Tok == TOK_SEMI) {
+ /* Type declaration only */
+ CheckEmptyDecl (&Spec);
+ NextToken ();
+ continue;
+ }
+
+ /* Parse a comma separated variable list */
+ while (1) {
+
+ /* Parse one declaration */
+ ParseOneDecl (&Spec);
+
+ /* Check if there is more */
+ if (CurTok.Tok == TOK_COMMA) {
+ /* More to come */
+ NextToken ();
+ } else {
+ /* Done */
+ break;
+ }
+ }
+
+ /* A semicolon must follow */
+ ConsumeSemi ();
+ }
+
+ /* Be sure to allocate any reserved space for locals */
+ F_AllocLocalSpace (CurrentFunc);
+
+ /* No auto variables were inited. No new block on the stack then. */
+ if (CollLast (&CurrentFunc->LocalsBlockStack) == NULL) {
+ CollPop (&CurrentFunc->LocalsBlockStack);
+ }
+
+ /* In case we've allocated local variables in this block, emit a call to
+ ** the stack checking routine if stack checks are enabled.
+ */
+ if (IS_Get (&CheckStack) && InitialStack != StackPtr) {
+ g_cstackcheck ();
+ }
+}
projects / cc65 / blobdiff