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8cd583d591
cc65/src/ld65/config.c
cuz 7774e57eae New segment attribute ALIGN_LOAD. Some cleanup. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3353 b7a2c559-68d2-44c3-8de9-860c34a00d81
2005-01-08 13:44:11 +00:00

1639 lines
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/*****************************************************************************/
/* */
/* config.c */
/* */
/* Target configuration file for the ld65 linker */
/* */
/* */
/* */
/* (C) 1998-2005 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* common */
#include "check.h"
#include "bitops.h"
#include "print.h"
#include "xmalloc.h"
#include "xsprintf.h"
/* ld65 */
#include "bin.h"
#include "binfmt.h"
#include "condes.h"
#include "config.h"
#include "error.h"
#include "exports.h"
#include "global.h"
#include "o65.h"
#include "scanner.h"
#include "spool.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* File list */
static File* FileList; /* Single linked list */
static unsigned FileCount; /* Number of entries in the list */
/* Memory list */
static Memory* MemoryList; /* Single linked list */
static Memory* MemoryLast; /* Last element in list */
static unsigned MemoryCount; /* Number of entries in the list */
/* Memory attributes */
#define MA_START 0x0001
#define MA_SIZE 0x0002
#define MA_TYPE 0x0004
#define MA_FILE 0x0008
#define MA_DEFINE 0x0010
#define MA_FILL 0x0020
#define MA_FILLVAL 0x0040
/* Segment list */
SegDesc* SegDescList; /* Single linked list */
unsigned SegDescCount; /* Number of entries in list */
/* Segment attributes */
#define SA_TYPE 0x0001
#define SA_LOAD 0x0002
#define SA_RUN 0x0004
#define SA_ALIGN 0x0008
#define SA_ALIGN_LOAD 0x0010
#define SA_DEFINE 0x0020
#define SA_OFFSET 0x0040
#define SA_START 0x0080
#define SA_OPTIONAL 0x0100
/* Descriptor holding information about the binary formats */
static BinDesc* BinFmtDesc = 0;
static O65Desc* O65FmtDesc = 0;
/*****************************************************************************/
/* Forwards */
/*****************************************************************************/
static File* NewFile (unsigned Name);
/* Create a new file descriptor and insert it into the list */
/*****************************************************************************/
/* List management */
/*****************************************************************************/
static File* FindFile (unsigned Name)
/* Find a file with a given name. */
{
File* F = FileList;
while (F) {
if (F->Name == Name) {
return F;
}
F = F->Next;
}
return 0;
}
static File* GetFile (unsigned Name)
/* Get a file entry with the given name. Create a new one if needed. */
{
File* F = FindFile (Name);
if (F == 0) {
/* Create a new one */
F = NewFile (Name);
}
return F;
}
static void FileInsert (File* F, Memory* M)
/* Insert the memory area into the files list */
{
M->F = F;
if (F->MemList == 0) {
/* First entry */
F->MemList = M;
} else {
F->MemLast->FNext = M;
}
F->MemLast = M;
}
static Memory* CfgFindMemory (unsigned Name)
/* Find the memory are with the given name. Return NULL if not found */
{
Memory* M = MemoryList;
while (M) {
if (M->Name == Name) {
return M;
}
M = M->Next;
}
return 0;
}
static Memory* CfgGetMemory (unsigned Name)
/* Find the memory are with the given name. Print an error on an invalid name */
{
Memory* M = CfgFindMemory (Name);
if (M == 0) {
CfgError ("Invalid memory area `%s'", GetString (Name));
}
return M;
}
static SegDesc* CfgFindSegDesc (unsigned Name)
/* Find the segment descriptor with the given name, return NULL if not found. */
{
SegDesc* S = SegDescList;
while (S) {
if (S->Name == Name) {
/* Found */
return S;
}
S = S->Next;
}
/* Not found */
return 0;
}
static void SegDescInsert (SegDesc* S)
/* Insert a segment descriptor into the list of segment descriptors */
{
/* Insert the struct into the list */
S->Next = SegDescList;
SegDescList = S;
++SegDescCount;
}
static void MemoryInsert (Memory* M, SegDesc* S)
/* Insert the segment descriptor into the memory area list */
{
/* Create a new node for the entry */
MemListNode* N = xmalloc (sizeof (MemListNode));
N->Seg = S;
N->Next = 0;
if (M->SegLast == 0) {
/* First entry */
M->SegList = N;
} else {
M->SegLast->Next = N;
}
M->SegLast = N;
}
/*****************************************************************************/
/* Constructors/Destructors */
/*****************************************************************************/
static File* NewFile (unsigned Name)
/* Create a new file descriptor and insert it into the list */
{
/* Allocate memory */
File* F = xmalloc (sizeof (File));
/* Initialize the fields */
F->Name = Name;
F->Flags = 0;
F->Format = BINFMT_DEFAULT;
F->MemList = 0;
F->MemLast = 0;
/* Insert the struct into the list */
F->Next = FileList;
FileList = F;
++FileCount;
/* ...and return it */
return F;
}
static Memory* NewMemory (unsigned Name)
/* Create a new memory section and insert it into the list */
{
/* Check for duplicate names */
Memory* M = CfgFindMemory (Name);
if (M) {
CfgError ("Memory area `%s' defined twice", GetString (Name));
}
/* Allocate memory */
M = xmalloc (sizeof (Memory));
/* Initialize the fields */
M->Name = Name;
M->Next = 0;
M->FNext = 0;
M->Attr = 0;
M->Flags = 0;
M->Start = 0;
M->Size = 0;
M->FillLevel = 0;
M->FillVal = 0;
M->Relocatable = 0;
M->SegList = 0;
M->SegLast = 0;
M->F = 0;
/* Insert the struct into the list */
if (MemoryLast == 0) {
/* First element */
MemoryList = M;
} else {
MemoryLast->Next = M;
}
MemoryLast = M;
++MemoryCount;
/* ...and return it */
return M;
}
static SegDesc* NewSegDesc (unsigned Name)
/* Create a segment descriptor */
{
Segment* Seg;
/* Check for duplicate names */
SegDesc* S = CfgFindSegDesc (Name);
if (S) {
CfgError ("Segment `%s' defined twice", GetString (Name));
}
/* Search for the actual segment in the input files. The function may
* return NULL (no such segment), this is checked later.
*/
Seg = SegFind (Name);
/* Allocate memory */
S = xmalloc (sizeof (SegDesc));
/* Initialize the fields */
S->Name = Name;
S->Next = 0;
S->Seg = Seg;
S->Attr = 0;
S->Flags = 0;
S->Align = 0;
/* ...and return it */
return S;
}
static void FreeSegDesc (SegDesc* S)
/* Free a segment descriptor */
{
xfree (S);
}
/*****************************************************************************/
/* Code */
/*****************************************************************************/
static void FlagAttr (unsigned* Flags, unsigned Mask, const char* Name)
/* Check if the item is already defined. Print an error if so. If not, set
* the marker that we have a definition now.
*/
{
if (*Flags & Mask) {
CfgError ("%s is already defined", Name);
}
*Flags |= Mask;
}
static void AttrCheck (unsigned Attr, unsigned Mask, const char* Name)
/* Check that a mandatory attribute was given */
{
if ((Attr & Mask) == 0) {
CfgError ("%s attribute is missing", Name);
}
}
static void ParseMemory (void)
/* Parse a MEMORY section */
{
static const IdentTok Attributes [] = {
{ "START", CFGTOK_START },
{ "SIZE", CFGTOK_SIZE },
{ "TYPE", CFGTOK_TYPE },
{ "FILE", CFGTOK_FILE },
{ "DEFINE", CFGTOK_DEFINE },
{ "FILL", CFGTOK_FILL },
{ "FILLVAL", CFGTOK_FILLVAL },
};
static const IdentTok Types [] = {
{ "RO", CFGTOK_RO },
{ "RW", CFGTOK_RW },
};
while (CfgTok == CFGTOK_IDENT) {
/* Create a new entry on the heap */
Memory* M = NewMemory (GetStringId (CfgSVal));
/* Skip the name and the following colon */
CfgNextTok ();
CfgConsumeColon ();
/* Read the attributes */
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_START:
FlagAttr (&M->Attr, MA_START, "START");
CfgAssureInt ();
M->Start = CfgIVal;
break;
case CFGTOK_SIZE:
FlagAttr (&M->Attr, MA_SIZE, "SIZE");
CfgAssureInt ();
M->Size = CfgIVal;
break;
case CFGTOK_TYPE:
FlagAttr (&M->Attr, MA_TYPE, "TYPE");
CfgSpecialToken (Types, ENTRY_COUNT (Types), "Type");
if (CfgTok == CFGTOK_RO) {
M->Flags |= MF_RO;
}
break;
case CFGTOK_FILE:
FlagAttr (&M->Attr, MA_FILE, "FILE");
CfgAssureStr ();
/* Get the file entry and insert the memory area */
FileInsert (GetFile (GetStringId (CfgSVal)), M);
break;
case CFGTOK_DEFINE:
FlagAttr (&M->Attr, MA_DEFINE, "DEFINE");
/* Map the token to a boolean */
CfgBoolToken ();
if (CfgTok == CFGTOK_TRUE) {
M->Flags |= MF_DEFINE;
}
break;
case CFGTOK_FILL:
FlagAttr (&M->Attr, MA_FILL, "FILL");
/* Map the token to a boolean */
CfgBoolToken ();
if (CfgTok == CFGTOK_TRUE) {
M->Flags |= MF_FILL;
}
break;
case CFGTOK_FILLVAL:
FlagAttr (&M->Attr, MA_FILLVAL, "FILLVAL");
CfgAssureInt ();
CfgRangeCheck (0, 0xFF);
M->FillVal = (unsigned char) CfgIVal;
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value and an optional comma */
CfgNextTok ();
CfgOptionalComma ();
}
/* Skip the semicolon */
CfgConsumeSemi ();
/* Check for mandatory parameters */
AttrCheck (M->Attr, MA_START, "START");
AttrCheck (M->Attr, MA_SIZE, "SIZE");
/* If we don't have a file name for output given, use the default
* file name.
*/
if ((M->Attr & MA_FILE) == 0) {
FileInsert (GetFile (GetStringId (OutputName)), M);
}
}
}
static void ParseFiles (void)
/* Parse a FILES section */
{
static const IdentTok Attributes [] = {
{ "FORMAT", CFGTOK_FORMAT },
};
static const IdentTok Formats [] = {
{ "O65", CFGTOK_O65 },
{ "BIN", CFGTOK_BIN },
{ "BINARY", CFGTOK_BIN },
};
/* Parse all files */
while (CfgTok != CFGTOK_RCURLY) {
File* F;
/* We expect a string value here */
CfgAssureStr ();
/* Search for the file, it must exist */
F = FindFile (GetStringId (CfgSVal));
if (F == 0) {
CfgError ("No such file: `%s'", CfgSVal);
}
/* Skip the token and the following colon */
CfgNextTok ();
CfgConsumeColon ();
/* Read the attributes */
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_FORMAT:
if (F->Format != BINFMT_DEFAULT) {
/* We've set the format already! */
Error ("Cannot set a file format twice");
}
/* Read the format token */
CfgSpecialToken (Formats, ENTRY_COUNT (Formats), "Format");
switch (CfgTok) {
case CFGTOK_BIN:
F->Format = BINFMT_BINARY;
break;
case CFGTOK_O65:
F->Format = BINFMT_O65;
break;
default:
Error ("Unexpected format token");
}
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value and an optional comma */
CfgNextTok ();
CfgOptionalComma ();
}
/* Skip the semicolon */
CfgConsumeSemi ();
}
}
static void ParseSegments (void)
/* Parse a SEGMENTS section */
{
static const IdentTok Attributes [] = {
{ "ALIGN", CFGTOK_ALIGN },
{ "ALIGN_LOAD", CFGTOK_ALIGN_LOAD },
{ "DEFINE", CFGTOK_DEFINE },
{ "LOAD", CFGTOK_LOAD },
{ "OFFSET", CFGTOK_OFFSET },
{ "OPTIONAL", CFGTOK_OPTIONAL },
{ "RUN", CFGTOK_RUN },
{ "START", CFGTOK_START },
{ "TYPE", CFGTOK_TYPE },
};
static const IdentTok Types [] = {
{ "RO", CFGTOK_RO },
{ "RW", CFGTOK_RW },
{ "BSS", CFGTOK_BSS },
{ "ZP", CFGTOK_ZP },
};
unsigned Count;
while (CfgTok == CFGTOK_IDENT) {
SegDesc* S;
/* Create a new entry on the heap */
S = NewSegDesc (GetStringId (CfgSVal));
/* Skip the name and the following colon */
CfgNextTok ();
CfgConsumeColon ();
/* Read the attributes */
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_ALIGN:
CfgAssureInt ();
FlagAttr (&S->Attr, SA_ALIGN, "ALIGN");
CfgRangeCheck (1, 0x10000);
S->Align = BitFind (CfgIVal);
if ((0x01UL << S->Align) != CfgIVal) {
CfgError ("Alignment must be a power of 2");
}
S->Flags |= SF_ALIGN;
break;
case CFGTOK_ALIGN_LOAD:
CfgAssureInt ();
FlagAttr (&S->Attr, SA_ALIGN_LOAD, "ALIGN_LOAD");
CfgRangeCheck (1, 0x10000);
S->AlignLoad = BitFind (CfgIVal);
if ((0x01UL << S->AlignLoad) != CfgIVal) {
CfgError ("Alignment must be a power of 2");
}
S->Flags |= SF_ALIGN_LOAD;
break;
case CFGTOK_DEFINE:
FlagAttr (&S->Attr, SA_DEFINE, "DEFINE");
/* Map the token to a boolean */
CfgBoolToken ();
if (CfgTok == CFGTOK_TRUE) {
S->Flags |= SF_DEFINE;
}
break;
case CFGTOK_LOAD:
FlagAttr (&S->Attr, SA_LOAD, "LOAD");
S->Load = CfgGetMemory (GetStringId (CfgSVal));
break;
case CFGTOK_OFFSET:
CfgAssureInt ();
FlagAttr (&S->Attr, SA_OFFSET, "OFFSET");
CfgRangeCheck (1, 0x1000000);
S->Addr = CfgIVal;
S->Flags |= SF_OFFSET;
break;
case CFGTOK_OPTIONAL:
FlagAttr (&S->Attr, SA_OPTIONAL, "OPTIONAL");
CfgBoolToken ();
if (CfgTok == CFGTOK_TRUE) {
S->Flags |= SF_OPTIONAL;
}
break;
case CFGTOK_RUN:
FlagAttr (&S->Attr, SA_RUN, "RUN");
S->Run = CfgGetMemory (GetStringId (CfgSVal));
break;
case CFGTOK_START:
CfgAssureInt ();
FlagAttr (&S->Attr, SA_START, "START");
CfgRangeCheck (1, 0x1000000);
S->Addr = CfgIVal;
S->Flags |= SF_START;
break;
case CFGTOK_TYPE:
FlagAttr (&S->Attr, SA_TYPE, "TYPE");
CfgSpecialToken (Types, ENTRY_COUNT (Types), "Type");
switch (CfgTok) {
case CFGTOK_RO: S->Flags |= SF_RO; break;
case CFGTOK_RW: /* Default */ break;
case CFGTOK_BSS: S->Flags |= SF_BSS; break;
case CFGTOK_ZP: S->Flags |= (SF_BSS | SF_ZP); break;
default: Internal ("Unexpected token: %d", CfgTok);
}
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value and an optional comma */
CfgNextTok ();
CfgOptionalComma ();
}
/* Check for mandatory parameters */
AttrCheck (S->Attr, SA_LOAD, "LOAD");
/* Set defaults for stuff not given */
if ((S->Attr & SA_RUN) == 0) {
S->Attr |= SA_RUN;
S->Run = S->Load;
}
/* If the segment is marked as BSS style, and if the segment exists
* in any of the object file, check that there's no initialized data
* in the segment.
*/
if ((S->Flags & SF_BSS) != 0 && S->Seg != 0 && !IsBSSType (S->Seg)) {
Warning ("%s(%u): Segment with type `bss' contains initialized data",
CfgGetName (), CfgErrorLine);
}
/* An attribute of ALIGN_LOAD doesn't make sense if there are no
* separate run and load memory areas.
*/
if ((S->Flags & SF_ALIGN_LOAD) != 0 && (S->Load == S->Run)) {
Warning ("%s(%u): ALIGN_LOAD attribute specified, but no separate "
"LOAD and RUN memory areas assigned",
CfgGetName (), CfgErrorLine);
/* Remove the flag */
S->Flags &= ~SF_ALIGN_LOAD;
}
/* If the segment is marked as BSS style, it may not have separate
* load and run memory areas, because it's is never written to disk.
*/
if ((S->Flags & SF_BSS) != 0 && (S->Load != S->Run)) {
Warning ("%s(%u): Segment with type `bss' has both LOAD and RUN "
"memory areas assigned", CfgGetName (), CfgErrorLine);
}
/* Don't allow read/write data to be put into a readonly area */
if ((S->Flags & SF_RO) == 0) {
if (S->Run->Flags & MF_RO) {
CfgError ("Cannot put r/w segment `%s' in r/o memory area `%s'",
GetString (S->Name), GetString (S->Run->Name));
}
}
/* Only one of ALIGN, START and OFFSET may be used */
Count = ((S->Flags & SF_ALIGN) != 0) +
((S->Flags & SF_OFFSET) != 0) +
((S->Flags & SF_START) != 0);
if (Count > 1) {
CfgError ("Only one of ALIGN, START, OFFSET may be used");
}
/* If this segment does exist in any of the object files, insert the
* descriptor into the list of segment descriptors. Otherwise print a
* warning and discard it, because the segment pointer in the
* descriptor is invalid.
*/
if (S->Seg != 0) {
/* Insert the descriptor into the list of all descriptors */
SegDescInsert (S);
/* Insert the segment into the memory area list */
MemoryInsert (S->Run, S);
if (S->Load != S->Run) {
/* We have separate RUN and LOAD areas */
MemoryInsert (S->Load, S);
}
} else {
/* Print a warning if the segment is not optional */
if ((S->Flags & SF_OPTIONAL) == 0) {
CfgWarning ("Segment `%s' does not exist", GetString (S->Name));
}
/* Discard the descriptor */
FreeSegDesc (S);
}
/* Skip the semicolon */
CfgConsumeSemi ();
}
}
static void ParseO65 (void)
/* Parse the o65 format section */
{
static const IdentTok Attributes [] = {
{ "EXPORT", CFGTOK_EXPORT },
{ "IMPORT", CFGTOK_IMPORT },
{ "TYPE", CFGTOK_TYPE },
{ "OS", CFGTOK_OS },
{ "ID", CFGTOK_ID },
{ "VERSION", CFGTOK_VERSION },
};
static const IdentTok Types [] = {
{ "SMALL", CFGTOK_SMALL },
{ "LARGE", CFGTOK_LARGE },
};
static const IdentTok OperatingSystems [] = {
{ "LUNIX", CFGTOK_LUNIX },
{ "OSA65", CFGTOK_OSA65 },
{ "CC65", CFGTOK_CC65 },
};
/* Bitmask to remember the attributes we got already */
enum {
atNone = 0x0000,
atOS = 0x0001,
atOSVersion = 0x0002,
atType = 0x0004,
atImport = 0x0008,
atExport = 0x0010,
atID = 0x0020,
atVersion = 0x0040
};
unsigned AttrFlags = atNone;
/* Remember the attributes read */
unsigned CfgSValId;
unsigned OS = 0; /* Initialize to keep gcc happy */
unsigned Version = 0;
/* Read the attributes */
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_EXPORT:
/* Remember we had this token (maybe more than once) */
AttrFlags |= atExport;
/* We expect an identifier */
CfgAssureIdent ();
/* Convert the string into a string index */
CfgSValId = GetStringId (CfgSVal);
/* Check if the export symbol is also defined as an import. */
if (O65GetImport (O65FmtDesc, CfgSValId) != 0) {
CfgError ("Exported symbol `%s' cannot be an import", CfgSVal);
}
/* Check if we have this symbol defined already. The entry
* routine will check this also, but we get a more verbose
* error message when checking it here.
*/
if (O65GetExport (O65FmtDesc, CfgSValId) != 0) {
CfgError ("Duplicate exported symbol: `%s'", CfgSVal);
}
/* Insert the symbol into the table */
O65SetExport (O65FmtDesc, CfgSValId);
break;
case CFGTOK_IMPORT:
/* Remember we had this token (maybe more than once) */
AttrFlags |= atImport;
/* We expect an identifier */
CfgAssureIdent ();
/* Convert the string into a string index */
CfgSValId = GetStringId (CfgSVal);
/* Check if the imported symbol is also defined as an export. */
if (O65GetExport (O65FmtDesc, CfgSValId) != 0) {
CfgError ("Imported symbol `%s' cannot be an export", CfgSVal);
}
/* Check if we have this symbol defined already. The entry
* routine will check this also, but we get a more verbose
* error message when checking it here.
*/
if (O65GetImport (O65FmtDesc, CfgSValId) != 0) {
CfgError ("Duplicate imported symbol: `%s'", CfgSVal);
}
/* Insert the symbol into the table */
O65SetImport (O65FmtDesc, CfgSValId);
break;
case CFGTOK_TYPE:
/* Cannot have this attribute twice */
FlagAttr (&AttrFlags, atType, "TYPE");
/* Get the type of the executable */
CfgSpecialToken (Types, ENTRY_COUNT (Types), "Type");
switch (CfgTok) {
case CFGTOK_SMALL:
O65SetSmallModel (O65FmtDesc);
break;
case CFGTOK_LARGE:
O65SetLargeModel (O65FmtDesc);
break;
default:
CfgError ("Unexpected type token");
}
break;
case CFGTOK_OS:
/* Cannot use this attribute twice */
FlagAttr (&AttrFlags, atOS, "OS");
/* Get the operating system */
CfgSpecialToken (OperatingSystems, ENTRY_COUNT (OperatingSystems), "OS type");
switch (CfgTok) {
case CFGTOK_LUNIX: OS = O65OS_LUNIX; break;
case CFGTOK_OSA65: OS = O65OS_OSA65; break;
case CFGTOK_CC65: OS = O65OS_CC65; break;
default: CfgError ("Unexpected OS token");
}
break;
case CFGTOK_ID:
/* Cannot have this attribute twice */
FlagAttr (&AttrFlags, atID, "ID");
/* We're expecting a number in the 0..$FFFF range*/
CfgAssureInt ();
CfgRangeCheck (0, 0xFFFF);
ModuleId = (unsigned) CfgIVal;
break;
case CFGTOK_VERSION:
/* Cannot have this attribute twice */
FlagAttr (&AttrFlags, atVersion, "VERSION");
/* We're expecting a number in byte range */
CfgAssureInt ();
CfgRangeCheck (0, 0xFF);
Version = (unsigned) CfgIVal;
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value and an optional comma */
CfgNextTok ();
CfgOptionalComma ();
}
/* Check if we have all mandatory attributes */
AttrCheck (AttrFlags, atOS, "OS");
/* Check for attributes that may not be combined */
if (OS == O65OS_CC65) {
if ((AttrFlags & (atImport | atExport)) != 0) {
CfgError ("OS type CC65 may not have imports or exports");
}
} else {
if (AttrFlags & atID) {
CfgError ("Operating system does not support the ID attribute");
}
}
/* Set the O65 operating system to use */
O65SetOS (O65FmtDesc, OS, Version, ModuleId);
}
static void ParseFormats (void)
/* Parse a target format section */
{
static const IdentTok Formats [] = {
{ "O65", CFGTOK_O65 },
{ "BIN", CFGTOK_BIN },
{ "BINARY", CFGTOK_BIN },
};
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t FormatTok;
CfgSpecialToken (Formats, ENTRY_COUNT (Formats), "Format");
FormatTok = CfgTok;
/* Skip the name and the following colon */
CfgNextTok ();
CfgConsumeColon ();
/* Parse the format options */
switch (FormatTok) {
case CFGTOK_O65:
ParseO65 ();
break;
case CFGTOK_BIN:
/* No attribibutes available */
break;
default:
Error ("Unexpected format token");
}
/* Skip the semicolon */
CfgConsumeSemi ();
}
}
static void ParseConDes (void)
/* Parse the CONDES feature */
{
static const IdentTok Attributes [] = {
{ "SEGMENT", CFGTOK_SEGMENT },
{ "LABEL", CFGTOK_LABEL },
{ "COUNT", CFGTOK_COUNT },
{ "TYPE", CFGTOK_TYPE },
{ "ORDER", CFGTOK_ORDER },
};
static const IdentTok Types [] = {
{ "CONSTRUCTOR", CFGTOK_CONSTRUCTOR },
{ "DESTRUCTOR", CFGTOK_DESTRUCTOR },
{ "INTERRUPTOR", CFGTOK_INTERRUPTOR },
};
static const IdentTok Orders [] = {
{ "DECREASING", CFGTOK_DECREASING },
{ "INCREASING", CFGTOK_INCREASING },
};
/* Attribute values. */
unsigned SegName = INVALID_STRING_ID;
unsigned Label = INVALID_STRING_ID;
unsigned Count = INVALID_STRING_ID;
/* Initialize to avoid gcc warnings: */
int Type = -1;
ConDesOrder Order = cdIncreasing;
/* Bitmask to remember the attributes we got already */
enum {
atNone = 0x0000,
atSegName = 0x0001,
atLabel = 0x0002,
atCount = 0x0004,
atType = 0x0008,
atOrder = 0x0010
};
unsigned AttrFlags = atNone;
/* Parse the attributes */
while (1) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_SEGMENT:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atSegName, "SEGMENT");
/* We expect an identifier */
CfgAssureIdent ();
/* Remember the value for later */
SegName = GetStringId (CfgSVal);
break;
case CFGTOK_LABEL:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atLabel, "LABEL");
/* We expect an identifier */
CfgAssureIdent ();
/* Remember the value for later */
Label = GetStringId (CfgSVal);
break;
case CFGTOK_COUNT:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atCount, "COUNT");
/* We expect an identifier */
CfgAssureIdent ();
/* Remember the value for later */
Count = GetStringId (CfgSVal);
break;
case CFGTOK_TYPE:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atType, "TYPE");
/* The type may be given as id or numerical */
if (CfgTok == CFGTOK_INTCON) {
CfgRangeCheck (CD_TYPE_MIN, CD_TYPE_MAX);
Type = (int) CfgIVal;
} else {
CfgSpecialToken (Types, ENTRY_COUNT (Types), "Type");
switch (CfgTok) {
case CFGTOK_CONSTRUCTOR: Type = CD_TYPE_CON; break;
case CFGTOK_DESTRUCTOR: Type = CD_TYPE_DES; break;
case CFGTOK_INTERRUPTOR: Type = CD_TYPE_INT; break;
default: FAIL ("Unexpected type token");
}
}
break;
case CFGTOK_ORDER:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atOrder, "ORDER");
CfgSpecialToken (Orders, ENTRY_COUNT (Orders), "Order");
switch (CfgTok) {
case CFGTOK_DECREASING: Order = cdDecreasing; break;
case CFGTOK_INCREASING: Order = cdIncreasing; break;
default: FAIL ("Unexpected order token");
}
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value */
CfgNextTok ();
/* Semicolon ends the ConDes decl, otherwise accept an optional comma */
if (CfgTok == CFGTOK_SEMI) {
break;
} else if (CfgTok == CFGTOK_COMMA) {
CfgNextTok ();
}
}
/* Check if we have all mandatory attributes */
AttrCheck (AttrFlags, atSegName, "SEGMENT");
AttrCheck (AttrFlags, atLabel, "LABEL");
AttrCheck (AttrFlags, atType, "TYPE");
/* Check if the condes has already attributes defined */
if (ConDesHasSegName(Type) || ConDesHasLabel(Type)) {
CfgError ("CONDES attributes for type %d are already defined", Type);
}
/* Define the attributes */
ConDesSetSegName (Type, SegName);
ConDesSetLabel (Type, Label);
if (AttrFlags & atCount) {
ConDesSetCountSym (Type, Count);
}
if (AttrFlags & atOrder) {
ConDesSetOrder (Type, Order);
}
}
static void ParseStartAddress (void)
/* Parse the STARTADDRESS feature */
{
static const IdentTok Attributes [] = {
{ "DEFAULT", CFGTOK_DEFAULT },
};
/* Attribute values. */
unsigned long DefStartAddr = 0;
/* Bitmask to remember the attributes we got already */
enum {
atNone = 0x0000,
atDefault = 0x0001
};
unsigned AttrFlags = atNone;
/* Parse the attributes */
while (1) {
/* Map the identifier to a token */
cfgtok_t AttrTok;
CfgSpecialToken (Attributes, ENTRY_COUNT (Attributes), "Attribute");
AttrTok = CfgTok;
/* An optional assignment follows */
CfgNextTok ();
CfgOptionalAssign ();
/* Check which attribute was given */
switch (AttrTok) {
case CFGTOK_DEFAULT:
/* Don't allow this twice */
FlagAttr (&AttrFlags, atDefault, "DEFAULT");
/* We expect a number */
CfgAssureInt ();
CfgRangeCheck (0, 0xFFFFFF);
/* Remember the value for later */
DefStartAddr = CfgIVal;
break;
default:
FAIL ("Unexpected attribute token");
}
/* Skip the attribute value */
CfgNextTok ();
/* Semicolon ends the ConDes decl, otherwise accept an optional comma */
if (CfgTok == CFGTOK_SEMI) {
break;
} else if (CfgTok == CFGTOK_COMMA) {
CfgNextTok ();
}
}
/* Check if we have all mandatory attributes */
AttrCheck (AttrFlags, atDefault, "DEFAULT");
/* If no start address was given on the command line, use the one given
* here
*/
if (!HaveStartAddr) {
StartAddr = DefStartAddr;
}
}
static void ParseFeatures (void)
/* Parse a features section */
{
static const IdentTok Features [] = {
{ "CONDES", CFGTOK_CONDES },
{ "STARTADDRESS", CFGTOK_STARTADDRESS },
};
while (CfgTok == CFGTOK_IDENT) {
/* Map the identifier to a token */
cfgtok_t FeatureTok;
CfgSpecialToken (Features, ENTRY_COUNT (Features), "Feature");
FeatureTok = CfgTok;
/* Skip the name and the following colon */
CfgNextTok ();
CfgConsumeColon ();
/* Parse the format options */
switch (FeatureTok) {
case CFGTOK_CONDES:
ParseConDes ();
break;
case CFGTOK_STARTADDRESS:
ParseStartAddress ();
break;
default:
Error ("Unexpected feature token");
}
/* Skip the semicolon */
CfgConsumeSemi ();
}
}
static void ParseSymbols (void)
/* Parse a symbols section */
{
while (CfgTok == CFGTOK_IDENT) {
long Val;
/* Remember the name */
unsigned Name = GetStringId (CfgSVal);
CfgNextTok ();
/* Allow an optional assignment */
CfgOptionalAssign ();
/* Make sure the next token is an integer, read and skip it */
CfgAssureInt ();
Val = CfgIVal;
CfgNextTok ();
/* Generate an export with the given value */
CreateConstExport (Name, Val);
/* Skip the semicolon */
CfgConsumeSemi ();
}
}
static void ParseConfig (void)
/* Parse the config file */
{
static const IdentTok BlockNames [] = {
{ "MEMORY", CFGTOK_MEMORY },
{ "FILES", CFGTOK_FILES },
{ "SEGMENTS", CFGTOK_SEGMENTS },
{ "FORMATS", CFGTOK_FORMATS },
{ "FEATURES", CFGTOK_FEATURES },
{ "SYMBOLS", CFGTOK_SYMBOLS },
};
cfgtok_t BlockTok;
do {
/* Read the block ident */
CfgSpecialToken (BlockNames, ENTRY_COUNT (BlockNames), "Block identifier");
BlockTok = CfgTok;
CfgNextTok ();
/* Expected a curly brace */
CfgConsume (CFGTOK_LCURLY, "`{' expected");
/* Read the block */
switch (BlockTok) {
case CFGTOK_MEMORY:
ParseMemory ();
break;
case CFGTOK_FILES:
ParseFiles ();
break;
case CFGTOK_SEGMENTS:
ParseSegments ();
break;
case CFGTOK_FORMATS:
ParseFormats ();
break;
case CFGTOK_FEATURES:
ParseFeatures ();
break;
case CFGTOK_SYMBOLS:
ParseSymbols ();
break;
default:
FAIL ("Unexpected block token");
}
/* Skip closing brace */
CfgConsume (CFGTOK_RCURLY, "`}' expected");
} while (CfgTok != CFGTOK_EOF);
}
void CfgRead (void)
/* Read the configuration */
{
/* Create the descriptors for the binary formats */
BinFmtDesc = NewBinDesc ();
O65FmtDesc = NewO65Desc ();
/* If we have a config name given, open the file, otherwise we will read
* from a buffer.
*/
CfgOpenInput ();
/* Parse the file */
ParseConfig ();
/* Close the input file */
CfgCloseInput ();
}
static void CreateRunDefines (SegDesc* S, unsigned long SegAddr)
/* Create the defines for a RUN segment */
{
char Buf [256];
xsprintf (Buf, sizeof (Buf), "__%s_RUN__", GetString (S->Name));
CreateMemoryExport (GetStringId (Buf), S->Run, SegAddr - S->Run->Start);
xsprintf (Buf, sizeof (Buf), "__%s_SIZE__", GetString (S->Name));
CreateConstExport (GetStringId (Buf), S->Seg->Size);
S->Flags |= SF_RUN_DEF;
}
static void CreateLoadDefines (SegDesc* S, unsigned long SegAddr)
/* Create the defines for a LOAD segment */
{
char Buf [256];
xsprintf (Buf, sizeof (Buf), "__%s_LOAD__", GetString (S->Name));
CreateMemoryExport (GetStringId (Buf), S->Load, SegAddr - S->Load->Start);
S->Flags |= SF_LOAD_DEF;
}
void CfgAssignSegments (void)
/* Assign segments, define linker symbols where requested */
{
/* Walk through each of the memory sections. Add up the sizes and check
* for an overflow of the section. Assign the start addresses of the
* segments while doing this.
*/
Memory* M = MemoryList;
while (M) {
MemListNode* N;
/* Get the start address of this memory area */
unsigned long Addr = M->Start;
/* Remember if this is a relocatable memory area */
M->Relocatable = RelocatableBinFmt (M->F->Format);
/* Walk through the segments in this memory area */
N = M->SegList;
while (N) {
/* Get the segment from the node */
SegDesc* S = N->Seg;
/* Some actions depend on wether this is the load or run memory
* area.
*/
if (S->Run == M) {
/* This is the run (and maybe load) memory area. Handle
* alignment and explict start address and offset.
*/
if (S->Flags & SF_ALIGN) {
/* Align the address */
unsigned long Val = (0x01UL << S->Align) - 1;
Addr = (Addr + Val) & ~Val;
} else if (S->Flags & (SF_OFFSET | SF_START)) {
/* Give the segment a fixed starting address */
unsigned long NewAddr = S->Addr;
if (S->Flags & SF_OFFSET) {
/* An offset was given, no address, make an address */
NewAddr += M->Start;
}
if (Addr > NewAddr) {
/* Offset already too large */
if (S->Flags & SF_OFFSET) {
Error ("Offset too small in `%s', segment `%s'",
GetString (M->Name), GetString (S->Name));
} else {
Error ("Start address too low in `%s', segment `%s'",
GetString (M->Name), GetString (S->Name));
}
}
Addr = NewAddr;
}
/* Set the start address of this segment, set the readonly flag
* in the segment and and remember if the segment is in a
* relocatable file or not.
*/
S->Seg->PC = Addr;
S->Seg->ReadOnly = (S->Flags & SF_RO) != 0;
S->Seg->Relocatable = M->Relocatable;
} else if (S->Load == M) {
/* This is the load memory area, *and* run and load are
* different (because of the "else" above). Handle alignment.
*/
if (S->Flags & SF_ALIGN_LOAD) {
/* Align the address */
unsigned long Val = (0x01UL << S->AlignLoad) - 1;
Addr = (Addr + Val) & ~Val;
}
}
/* Increment the fill level of the memory area and check for an
* overflow.
*/
M->FillLevel = Addr + S->Seg->Size - M->Start;
if (M->FillLevel > M->Size) {
Error ("Memory area overflow in `%s', segment `%s' (%lu bytes)",
GetString (M->Name), GetString (S->Name),
M->FillLevel - M->Size);
}
/* If requested, define symbols for the start and size of the
* segment.
*/
if (S->Flags & SF_DEFINE) {
if (S->Run == M && (S->Flags & SF_RUN_DEF) == 0) {
CreateRunDefines (S, Addr);
}
if (S->Load == M && (S->Flags & SF_LOAD_DEF) == 0) {
CreateLoadDefines (S, Addr);
}
}
/* Calculate the new address */
Addr += S->Seg->Size;
/* Next segment */
N = N->Next;
}
/* If requested, define symbols for start and size of the memory area */
if (M->Flags & MF_DEFINE) {
char Buf [256];
sprintf (Buf, "__%s_START__", GetString (M->Name));
CreateMemoryExport (GetStringId (Buf), M, 0);
sprintf (Buf, "__%s_SIZE__", GetString (M->Name));
CreateConstExport (GetStringId (Buf), M->Size);
sprintf (Buf, "__%s_LAST__", GetString (M->Name));
CreateMemoryExport (GetStringId (Buf), M, M->FillLevel);
}
/* Next memory area */
M = M->Next;
}
}
void CfgWriteTarget (void)
/* Write the target file(s) */
{
Memory* M;
/* Walk through the files list */
File* F = FileList;
while (F) {
/* We don't need to look at files with no memory areas */
if (F->MemList) {
/* Is there an output file? */
if (strlen (GetString (F->Name)) > 0) {
/* Assign a proper binary format */
if (F->Format == BINFMT_DEFAULT) {
F->Format = DefaultBinFmt;
}
/* Call the apropriate routine for the binary format */
switch (F->Format) {
case BINFMT_BINARY:
BinWriteTarget (BinFmtDesc, F);
break;
case BINFMT_O65:
O65WriteTarget (O65FmtDesc, F);
break;
default:
Internal ("Invalid binary format: %u", F->Format);
}
} else {
/* No output file. Walk through the list and mark all segments
* loading into these memory areas in this file as dumped.
*/
M = F->MemList;
while (M) {
MemListNode* N;
/* Debugging */
Print (stdout, 2, "Skipping `%s'...\n", GetString (M->Name));
/* Walk throught the segments */
N = M->SegList;
while (N) {
if (N->Seg->Load == M) {
/* Load area - mark the segment as dumped */
N->Seg->Seg->Dumped = 1;
}
/* Next segment node */
N = N->Next;
}
/* Next memory area */
M = M->FNext;
}
}
}
/* Next file */
F = F->Next;
}
}
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