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Move SymEntry stuff into its own module

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2563 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-10-22 21:24:37 +00:00
parent 2c7218b5d9
commit 48c122e478
5 changed files with 159 additions and 85 deletions
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1
src/ca65/make/gcc.mak
View File

@ -37,6 +37,7 @@ OBJS = asserts.o \
scanner.o \
segment.o \
spool.o \
symentry.o \
symtab.o \
toklist.o \
ulabel.o

1
src/ca65/make/watcom.mak
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@ -70,6 +70,7 @@ OBJS = asserts.obj \
scanner.obj \
segment.obj \
spool.obj \
symentry.obj \
symtab.obj \
toklist.obj \
ulabel.obj

95
src/ca65/symentry.c Normal file
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@ -0,0 +1,95 @@
/*****************************************************************************/
/* */
/* symentry.c */
/* */
/* Symbol table entry forward for the ca65 macroassembler */
/* */
/* */
/* */
/* (C) 1998-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
/* common */
#include "xmalloc.h"
/* ca65 */
#include "scanner.h"
#include "symentry.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
SymEntry* SymList = 0; /* List of all symbol table entries */
/*****************************************************************************/
/* Code */
/*****************************************************************************/
SymEntry* NewSymEntry (const char* Name)
/* Allocate a symbol table entry, initialize and return it */
{
SymEntry* S;
unsigned Len;
/* Get the length of the name */
Len = strlen (Name);
/* Allocate memory */
S = xmalloc (sizeof (SymEntry) + Len);
/* Initialize the entry */
S->Left = 0;
S->Right = 0;
S->Locals = 0;
S->SymTab = 0;
S->Pos = CurPos;
S->Flags = 0;
S->V.Expr = 0;
memset (S->ConDesPrio, 0, sizeof (S->ConDesPrio));
memcpy (S->Name, Name, Len+1);
/* Insert it into the list of all entries */
S->List = SymList;
SymList = S;
/* Return the initialized entry */
return S;
}

66
src/ca65/symentry.h
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@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 1998 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 1998-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -38,14 +38,70 @@
/* common */
#include "cddefs.h"
#include "filepos.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Forward declaration for struct SymEntry */
/* Bits for the Flags value in SymEntry */
#define SF_NONE 0x0000 /* Empty flag set */
#define SF_USER 0x0001 /* User bit */
#define SF_TRAMPOLINE 0x0002 /* Trampoline entry */
#define SF_EXPORT 0x0004 /* Export this symbol */
#define SF_IMPORT 0x0008 /* Import this symbol */
#define SF_GLOBAL 0x0010 /* Global symbol */
#define SF_ZP 0x0020 /* Declared as zeropage symbol */
#define SF_ABS 0x0040 /* Declared as absolute symbol */
#define SF_LABEL 0x0080 /* Used as a label */
#define SF_FORCED 0x0100 /* Forced import, SF_IMPORT also set */
#define SF_FINALIZED 0x0200 /* Symbol is finalized */
#define SF_INDEXED 0x0800 /* Index is valid */
#define SF_CONST 0x1000 /* The symbol has a constant value */
#define SF_MULTDEF 0x2000 /* Multiply defined symbol */
#define SF_DEFINED 0x4000 /* Defined */
#define SF_REFERENCED 0x8000 /* Referenced */
/* Structure of a symbol table entry */
typedef struct SymEntry SymEntry;
struct SymEntry {
SymEntry* Left; /* Lexically smaller entry */
SymEntry* Right; /* Lexically larger entry */
SymEntry* List; /* List of all entries */
SymEntry* Locals; /* Root of subtree for local symbols */
struct SymTable* SymTab; /* Table this symbol is in, 0 for locals */
FilePos Pos; /* File position for this symbol */
unsigned Flags; /* Symbol flags */
unsigned Index; /* Index of import/export entries */
union {
struct ExprNode* Expr; /* Expression if CONST not set */
long Val; /* Value (if CONST set) */
SymEntry* Sym; /* Symbol (if trampoline entry) */
} V;
unsigned char ConDesPrio[CD_TYPE_COUNT]; /* ConDes priorities... */
/* ...actually value+1 (used as flag) */
char Name [1]; /* Dynamic allocation */
};
/* List of all symbol table entries */
extern SymEntry* SymList;
/*****************************************************************************/
/* Code */
/*****************************************************************************/
SymEntry* NewSymEntry (const char* Name);
/* Allocate a symbol table entry, initialize and return it */

81
src/ca65/symtab.c
View File

@ -36,7 +36,6 @@
#include <string.h>
/* common */
#include "cddefs.h"
#include "check.h"
#include "hashstr.h"
#include "symdefs.h"
@ -59,25 +58,7 @@
/* Bits for the Flags value in SymEntry */
#define SF_NONE 0x0000 /* Empty flag set */
#define SF_USER 0x0001 /* User bit */
#define SF_TRAMPOLINE 0x0002 /* Trampoline entry */
#define SF_EXPORT 0x0004 /* Export this symbol */
#define SF_IMPORT 0x0008 /* Import this symbol */
#define SF_GLOBAL 0x0010 /* Global symbol */
#define SF_ZP 0x0020 /* Declared as zeropage symbol */
#define SF_ABS 0x0040 /* Declared as absolute symbol */
#define SF_LABEL 0x0080 /* Used as a label */
#define SF_FORCED 0x0100 /* Forced import, SF_IMPORT also set */
#define SF_FINALIZED 0x0200 /* Symbol is finalized */
#define SF_INDEXED 0x0800 /* Index is valid */
#define SF_CONST 0x1000 /* The symbol has a constant value */
#define SF_MULTDEF 0x2000 /* Multiply defined symbol */
#define SF_DEFINED 0x4000 /* Defined */
#define SF_REFERENCED 0x8000 /* Referenced */
/* Combined stuff */
/* Combined symbol entry flags used within this module */
#define SF_UNDEFMASK (SF_REFERENCED | SF_DEFINED | SF_IMPORT)
#define SF_UNDEFVAL (SF_REFERENCED)
#define SF_EXPMASK (SF_TRAMPOLINE | SF_EXPORT)
@ -85,28 +66,6 @@
#define SF_DBGINFOMASK (SF_TRAMPOLINE | SF_DEFINED | SF_EXPORT | SF_IMPORT)
#define SF_DBGINFOVAL (SF_DEFINED)
/* Structure of a symbol table entry */
struct SymEntry {
SymEntry* Left; /* Lexically smaller entry */
SymEntry* Right; /* Lexically larger entry */
SymEntry* List; /* List of all entries */
SymEntry* Locals; /* Root of subtree for local symbols */
struct SymTable* SymTab; /* Table this symbol is in, 0 for locals */
FilePos Pos; /* File position for this symbol */
unsigned Flags; /* Symbol flags */
unsigned Index; /* Index of import/export entries */
union {
struct ExprNode* Expr; /* Expression if CONST not set */
long Val; /* Value (if CONST set) */
SymEntry* Sym; /* Symbol (if trampoline entry) */
} V;
unsigned char ConDesPrio[CD_TYPE_COUNT]; /* ConDes priorities... */
/* ...actually value+1 (used as flag) */
char Name [1]; /* Dynamic allocation */
};
/* Definitions for the hash table */
#define MAIN_HASHTAB_SIZE 213
#define SUB_HASHTAB_SIZE 53
@ -118,16 +77,11 @@ struct SymTable {
SymEntry* Table [1]; /* Dynamic allocation */
};
/* Arguments for SymFind */
#define SF_FIND_EXISTING 0
#define SF_ALLOC_NEW 1
/* Symbol table variables */
static SymEntry* SymList = 0; /* List of all symbol table entries */
static SymEntry* SymLast = 0; /* Pointer to last defined symbol */
static SymTable* SymTab = 0; /* Pointer to current symbol table */
static SymTable* RootTab = 0; /* Root symbol table */
@ -150,39 +104,6 @@ static int IsLocal (const char* Name)
static SymEntry* NewSymEntry (const char* Name)
/* Allocate a symbol table entry, initialize and return it */
{
SymEntry* S;
unsigned Len;
/* Get the length of the name */
Len = strlen (Name);
/* Allocate memory */
S = xmalloc (sizeof (SymEntry) + Len);
/* Initialize the entry */
S->Left = 0;
S->Right = 0;
S->Locals = 0;
S->SymTab = 0;
S->Pos = CurPos;
S->Flags = 0;
S->V.Expr = 0;
memset (S->ConDesPrio, 0, sizeof (S->ConDesPrio));
memcpy (S->Name, Name, Len+1);
/* Insert it into the list of all entries */
S->List = SymList;
SymList = S;
/* Return the initialized entry */
return S;
}
static SymTable* NewSymTable (unsigned Size)
/* Allocate a symbol table on the heap and return it */
{