/* */
/* */
/* */
-/* (C) 1999 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (C) 1999-2011, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
#include <stdio.h>
#include <string.h>
+#include <limits.h>
#include <errno.h>
#include <time.h>
-#include "../common/version.h"
-#include "../common/xmalloc.h"
+/* common */
+#include "chartype.h"
+#include "check.h"
+#include "print.h"
+#include "version.h"
+#include "xmalloc.h"
+/* ld65 */
#include "error.h"
#include "exports.h"
#include "expr.h"
#include "fileio.h"
#include "global.h"
+#include "lineinfo.h"
+#include "memarea.h"
#include "o65.h"
+#include "spool.h"
/* Header mode bits */
+#define MF_CPU_65816 0x8000 /* Executable is for 65816 */
+#define MF_CPU_6502 0x0000 /* Executable is for the 6502 */
+#define MF_CPU_MASK 0x8000 /* Mask to extract CPU type */
+
+#define MF_RELOC_PAGE 0x4000 /* Page wise relocation */
+#define MF_RELOC_BYTE 0x0000 /* Byte wise relocation */
+#define MF_RELOC_MASK 0x4000 /* Mask to extract relocation type */
+
#define MF_SIZE_32BIT 0x2000 /* All size words are 32bit */
-#define MF_CPU_816 0x8000 /* Executable is for 65816 */
+#define MF_SIZE_16BIT 0x0000 /* All size words are 16bit */
+#define MF_SIZE_MASK 0x2000 /* Mask to extract size */
+
+#define MF_FTYPE_OBJ 0x1000 /* Object file */
+#define MF_FTYPE_EXE 0x0000 /* Executable file */
+#define MF_FTYPE_MASK 0x1000 /* Mask to extract type */
+
+#define MF_ADDR_SIMPLE 0x0800 /* Simple addressing */
+#define MF_ADDR_DEFAULT 0x0000 /* Default addressing */
+#define MF_ADDR_MASK 0x0800 /* Mask to extract addressing */
+
+#define MF_ALIGN_1 0x0000 /* Bytewise alignment */
+#define MF_ALIGN_2 0x0001 /* Align words */
+#define MF_ALIGN_4 0x0002 /* Align longwords */
+#define MF_ALIGN_256 0x0003 /* Align pages (256 bytes) */
+#define MF_ALIGN_MASK 0x0003 /* Mask to extract alignment */
/* The four o65 segment types. Note: These values are identical to the values
* needed for the segmentID in the o65 spec.
#define O65SEG_TEXT 0x02
#define O65SEG_DATA 0x03
#define O65SEG_BSS 0x04
-#define O65SEG_ZP 0x05
+#define O65SEG_ZP 0x05
/* Relocation type codes for the o65 format */
#define O65RELOC_WORD 0x80
#define O65RELOC_HIGH 0x40
#define O65RELOC_LOW 0x20
-#define O65RELOC_SEGADR 0xc0
-#define O65RELOC_SEG 0xa0
+#define O65RELOC_SEGADR 0xC0
+#define O65RELOC_SEG 0xA0
+#define O65RELOC_MASK 0xE0
/* O65 executable file header */
-typedef struct O65Header_ O65Header;
-struct O65Header_ {
+typedef struct O65Header O65Header;
+struct O65Header {
unsigned Version; /* Version number for o65 format */
unsigned Mode; /* Mode word */
unsigned long TextBase; /* Base address of text segment */
};
/* An o65 option */
-typedef struct O65Option_ O65Option;
-struct O65Option_ {
+typedef struct O65Option O65Option;
+struct O65Option {
O65Option* Next; /* Next in option list */
- unsigned char Type; /* Type of option */
- unsigned char Len; /* Data length */
- unsigned char Data [1]; /* Data, dynamically allocated */
+ unsigned char Type; /* Type of option */
+ unsigned char Len; /* Data length */
+ unsigned char Data [1]; /* Data, dynamically allocated */
};
/* A o65 relocation table */
-#define RELOC_BLOCKSIZE 4096
-typedef struct O65RelocTab_ O65RelocTab;
-struct O65RelocTab_ {
- unsigned Size; /* Size of the table */
- unsigned Fill; /* Amount used */
- unsigned char* Buf; /* Buffer, dynamically allocated */
+typedef struct O65RelocTab O65RelocTab;
+struct O65RelocTab {
+ unsigned Size; /* Size of the table */
+ unsigned Fill; /* Amount used */
+ unsigned char* Buf; /* Buffer, dynamically allocated */
};
/* Structure describing the format */
-struct O65Desc_ {
- O65Header Header; /* File header */
- O65Option* Options; /* List of file options */
- ExtSymTab* Exports; /* Table with exported symbols */
- ExtSymTab* Imports; /* Table with imported symbols */
- unsigned Undef; /* Count of undefined symbols */
- FILE* F; /* The file we're writing to */
- char* Filename; /* Name of the output file */
- O65RelocTab* TextReloc; /* Relocation table for text segment */
- O65RelocTab* DataReloc; /* Relocation table for data segment */
-
- unsigned TextCount; /* Number of segments assigned to .text */
- SegDesc** TextSeg; /* Array of text segments */
- unsigned DataCount; /* Number of segments assigned to .data */
- SegDesc** DataSeg; /* Array of data segments */
- unsigned BssCount; /* Number of segments assigned to .bss */
- SegDesc** BssSeg; /* Array of bss segments */
- unsigned ZPCount; /* Number of segments assigned to .zp */
- SegDesc** ZPSeg; /* Array of zp segments */
+struct O65Desc {
+ O65Header Header; /* File header */
+ O65Option* Options; /* List of file options */
+ ExtSymTab* Exports; /* Table with exported symbols */
+ ExtSymTab* Imports; /* Table with imported symbols */
+ unsigned Undef; /* Count of undefined symbols */
+ FILE* F; /* The file we're writing to */
+ const char* Filename; /* Name of the output file */
+ O65RelocTab* TextReloc; /* Relocation table for text segment */
+ O65RelocTab* DataReloc; /* Relocation table for data segment */
+
+ unsigned TextCount; /* Number of segments assigned to .text */
+ SegDesc** TextSeg; /* Array of text segments */
+ unsigned DataCount; /* Number of segments assigned to .data */
+ SegDesc** DataSeg; /* Array of data segments */
+ unsigned BssCount; /* Number of segments assigned to .bss */
+ SegDesc** BssSeg; /* Array of bss segments */
+ unsigned ZPCount; /* Number of segments assigned to .zp */
+ SegDesc** ZPSeg; /* Array of zp segments */
/* Temporary data for writing segments */
unsigned long SegSize;
O65RelocTab* CurReloc;
- long LastOffs;
+ long LastOffs;
};
/* Structure for parsing expression trees */
-typedef struct ExprDesc_ ExprDesc;
-struct ExprDesc_ {
- O65Desc* D; /* File format descriptor */
- long Val; /* The offset value */
+typedef struct ExprDesc ExprDesc;
+struct ExprDesc {
+ O65Desc* D; /* File format descriptor */
+ long Val; /* The offset value */
int TooComplex; /* Expression too complex */
- Section* SegRef; /* Section referenced if any */
- ExtSym* ExtRef; /* External reference if any */
+ MemoryArea* MemRef; /* Memory reference if any */
+ Segment* SegRef; /* Segment reference if any */
+ Section* SecRef; /* Section reference if any */
+ ExtSym* ExtRef; /* External reference if any */
};
/*****************************************************************************/
-/* Helper functions */
+/* Helper functions */
/*****************************************************************************/
+static ExprDesc* InitExprDesc (ExprDesc* ED, O65Desc* D)
+/* Initialize an ExprDesc structure for use with O65ParseExpr */
+{
+ ED->D = D;
+ ED->Val = 0;
+ ED->TooComplex = 0;
+ ED->MemRef = 0;
+ ED->SegRef = 0;
+ ED->SecRef = 0;
+ ED->ExtRef = 0;
+ return ED;
+}
+
+
+
static void WriteSize (const O65Desc* D, unsigned long Val)
/* Write a "size" word to the file */
{
- if (D->Header.Mode & MF_SIZE_32BIT) {
- Write32 (D->F, Val);
- } else {
- Write16 (D->F, (unsigned) Val);
+ switch (D->Header.Mode & MF_SIZE_MASK) {
+ case MF_SIZE_16BIT: Write16 (D->F, (unsigned) Val); break;
+ case MF_SIZE_32BIT: Write32 (D->F, Val); break;
+ default: Internal ("Invalid size in header: %04X", D->Header.Mode);
}
}
* to check SF_ZP first.
*/
if (S->Flags & SF_RO) {
- return O65SEG_TEXT;
+ return O65SEG_TEXT;
} else if (S->Flags & SF_ZP) {
- return O65SEG_ZP;
+ return O65SEG_ZP;
} else if (S->Flags & SF_BSS) {
- return O65SEG_BSS;
+ return O65SEG_BSS;
} else {
- return O65SEG_DATA;
+ return O65SEG_DATA;
}
}
+static void CvtMemoryToSegment (ExprDesc* ED)
+/* Convert a memory area into a segment by searching the list of run segments
+ * in this memory area and assigning the nearest one.
+ */
+{
+ /* Get the memory area from the expression */
+ MemoryArea* M = ED->MemRef;
+
+ /* Remember the "nearest" segment and its offset */
+ Segment* Nearest = 0;
+ unsigned long Offs = ULONG_MAX;
+
+ /* Walk over all segments */
+ unsigned I;
+ for (I = 0; I < CollCount (&M->SegList); ++I) {
+
+ /* Get the segment and check if it's a run segment */
+ SegDesc* S = CollAtUnchecked (&M->SegList, I);
+ if (S->Run == M) {
+
+ unsigned long O;
+
+ /* Get the segment from the segment descriptor */
+ Segment* Seg = S->Seg;
+
+ /* Check the PC. */
+ if ((long) Seg->PC <= ED->Val && (O = (ED->Val - Seg->PC)) < Offs) {
+ /* This is the nearest segment for now */
+ Offs = O;
+ Nearest = Seg;
+
+ /* If we found an exact match, don't look further */
+ if (Offs == 0) {
+ break;
+ }
+ }
+ }
+ }
+
+ /* If we found a segment, use it and adjust the offset */
+ if (Nearest) {
+ ED->SegRef = Nearest;
+ ED->MemRef = 0;
+ ED->Val -= Nearest->PC;
+ }
+}
+
+
+
+static const SegDesc* FindSeg (SegDesc** const List, unsigned Count, const Segment* S)
+/* Search for a segment in the given list of segment descriptors and return
+ * the descriptor for a segment if we found it, and NULL if not.
+ */
+{
+ unsigned I;
+
+ for (I = 0; I < Count; ++I) {
+ if (List[I]->Seg == S) {
+ /* Found */
+ return List[I];
+ }
+ }
+
+ /* Not found */
+ return 0;
+}
+
+
+
+static const SegDesc* O65FindSeg (const O65Desc* D, const Segment* S)
+/* Search for a segment in the segment lists and return it's segment descriptor */
+{
+ const SegDesc* SD;
+
+ if ((SD = FindSeg (D->TextSeg, D->TextCount, S)) != 0) {
+ return SD;
+ }
+ if ((SD = FindSeg (D->DataSeg, D->DataCount, S)) != 0) {
+ return SD;
+ }
+ if ((SD = FindSeg (D->BssSeg, D->BssCount, S)) != 0) {
+ return SD;
+ }
+ if ((SD = FindSeg (D->ZPSeg, D->ZPCount, S)) != 0) {
+ return SD;
+ }
+
+ /* Not found */
+ return 0;
+}
+
+
+
/*****************************************************************************/
-/* Expression handling */
+/* Expression handling */
/*****************************************************************************/
switch (Expr->Op) {
case EXPR_LITERAL:
- if (Sign < 0) {
- D->Val -= Expr->V.Val;
- } else {
- D->Val += Expr->V.Val;
- }
+ D->Val += (Sign * Expr->V.IVal);
break;
case EXPR_SYMBOL:
}
} else {
MarkExport (E);
- O65ParseExpr (E->Expr, D, Sign);
+ O65ParseExpr (E->Expr, D, Sign);
UnmarkExport (E);
}
break;
- case EXPR_SEGMENT:
+ case EXPR_SECTION:
+ if (D->SecRef) {
+ /* We cannot handle more than one segment reference in o65 */
+ D->TooComplex = 1;
+ } else {
+ /* Remember the segment reference */
+ D->SecRef = GetExprSection (Expr);
+ /* Add the offset of the section to the constant value */
+ D->Val += Sign * (D->SecRef->Offs + D->SecRef->Seg->PC);
+ }
+ break;
+
+ case EXPR_SEGMENT:
if (D->SegRef) {
/* We cannot handle more than one segment reference in o65 */
D->TooComplex = 1;
} else {
- /* Remember the segment reference */
- D->SegRef = GetExprSection (Expr);
+ /* Remember the segment reference */
+ D->SegRef = Expr->V.Seg;
+ /* Add the offset of the segment to the constant value */
+ D->Val += (Sign * D->SegRef->PC);
+ }
+ break;
+
+ case EXPR_MEMAREA:
+ if (D->MemRef) {
+ /* We cannot handle more than one memory reference in o65 */
+ D->TooComplex = 1;
+ } else {
+ /* Remember the memory area reference */
+ D->MemRef = Expr->V.Mem;
+ /* Add the start address of the memory area to the constant
+ * value
+ */
+ D->Val += (Sign * D->MemRef->Start);
}
break;
O65RelocTab* R = xmalloc (sizeof (O65RelocTab));
/* Initialize the data */
- R->Size = RELOC_BLOCKSIZE;
+ R->Size = 0;
R->Fill = 0;
- R->Buf = xmalloc (RELOC_BLOCKSIZE);
+ R->Buf = 0;
/* Return the created struct */
return R;
/* Do we have enough space in the buffer? */
if (R->Fill == R->Size) {
/* We need to grow the buffer */
- unsigned char* NewBuf = xmalloc (R->Size + RELOC_BLOCKSIZE);
- memcpy (NewBuf, R->Buf, R->Size);
- xfree (R->Buf);
- R->Buf = NewBuf;
+ if (R->Size) {
+ R->Size *= 2;
+ } else {
+ R->Size = 1024; /* Initial size */
+ }
+ R->Buf = xrealloc (R->Buf, R->Size);
}
/* Put the byte into the buffer */
/*****************************************************************************/
-/* Option handling */
+/* Option handling */
/*****************************************************************************/
/*****************************************************************************/
-/* Subroutines to write o65 sections */
+/* Subroutines to write o65 sections */
/*****************************************************************************/
O65Option* O;
-
/* Write the fixed header */
WriteData (D->F, Trailer, sizeof (Trailer));
Write8 (D->F, D->Header.Version);
static unsigned O65WriteExpr (ExprNode* E, int Signed, unsigned Size,
- unsigned long Offs, void* Data)
+ unsigned long Offs, void* Data)
/* Called from SegWrite for an expression. Evaluate the expression, check the
* range and write the expression value to the file, update the relocation
* table.
*/
{
- long Diff;
- long BinVal;
- ExprNode* Expr;
- ExprDesc ED;
+ long Diff;
+ unsigned RefCount;
+ long BinVal;
+ ExprNode* Expr;
+ ExprDesc ED;
unsigned char RelocType;
/* Cast the Data pointer to its real type, an O65Desc */
* Calculate the number of bytes between this entry and the last one, and
* setup all necessary intermediate bytes in the relocation table.
*/
- Offs += D->SegSize; /* Calulate full offset */
+ Offs += D->SegSize; /* Calulate full offset */
Diff = ((long) Offs) - D->LastOffs;
while (Diff > 0xFE) {
- O65RelocPutByte (D->CurReloc, 0xFF);
- Diff -= 0xFE;
+ O65RelocPutByte (D->CurReloc, 0xFF);
+ Diff -= 0xFE;
}
O65RelocPutByte (D->CurReloc, (unsigned char) Diff);
/* Determine the expression to relocate */
Expr = E;
- if (E->Op == EXPR_LOBYTE || E->Op == EXPR_HIBYTE) {
- /* Use the real expression */
+ if (E->Op == EXPR_BYTE0 || E->Op == EXPR_BYTE1 ||
+ E->Op == EXPR_BYTE2 || E->Op == EXPR_BYTE3 ||
+ E->Op == EXPR_WORD0 || E->Op == EXPR_WORD1) {
+ /* Use the real expression */
Expr = E->Left;
}
- /* Initialize the descriptor for expression parsing */
- ED.D = D;
- ED.Val = 0;
- ED.TooComplex = 0;
- ED.SegRef = 0;
- ED.ExtRef = 0;
-
/* Recursively collect information about this expression */
- O65ParseExpr (Expr, &ED, 1);
+ O65ParseExpr (Expr, InitExprDesc (&ED, D), 1);
- /* We cannot handle both, an imported symbol and a segment ref */
- if (ED.SegRef != 0 && ED.ExtRef != 0) {
- ED.TooComplex = 1;
+ /* We cannot handle more than one external reference */
+ RefCount = (ED.MemRef != 0) + (ED.SegRef != 0) +
+ (ED.SecRef != 0) + (ED.ExtRef != 0);
+ if (RefCount > 1) {
+ ED.TooComplex = 1;
+ }
+
+ /* If we have a memory area reference, we need to convert it into a
+ * segment reference. If we cannot do that, we cannot handle the
+ * expression.
+ */
+ if (ED.MemRef) {
+ CvtMemoryToSegment (&ED);
+ if (ED.SegRef == 0) {
+ return SEG_EXPR_TOO_COMPLEX;
+ }
}
/* Bail out if we cannot handle the expression */
if (ED.TooComplex) {
- return SEG_EXPR_TOO_COMPLEX;
+ return SEG_EXPR_TOO_COMPLEX;
}
- /* Safety: Check that we are really referencing a symbol or a segment */
- CHECK (ED.SegRef != 0 || ED.ExtRef != 0);
+ /* Safety: Check that we have exactly one reference */
+ CHECK (RefCount == 1);
/* Write out the offset that goes into the segment. */
BinVal = ED.Val;
- if (E->Op == EXPR_LOBYTE) {
- BinVal &= 0x00FF;
- } else if (E->Op == EXPR_HIBYTE) {
- BinVal = (BinVal >> 8) & 0x00FF;
+ switch (E->Op) {
+ case EXPR_BYTE0: BinVal &= 0xFF; break;
+ case EXPR_BYTE1: BinVal = (BinVal >> 8) & 0xFF; break;
+ case EXPR_BYTE2: BinVal = (BinVal >> 16) & 0xFF; break;
+ case EXPR_BYTE3: BinVal = (BinVal >> 24) & 0xFF; break;
+ case EXPR_WORD0: BinVal &= 0xFFFF; break;
+ case EXPR_WORD1: BinVal = (BinVal >> 16) & 0xFFFF; break;
}
WriteVal (D->F, BinVal, Size);
/* Determine the actual type of relocation entry needed from the
* information gathered about the expression.
*/
- if (E->Op == EXPR_LOBYTE) {
- RelocType = O65RELOC_LOW;
- } else if (E->Op == EXPR_HIBYTE) {
- RelocType = O65RELOC_HIGH;
+ if (E->Op == EXPR_BYTE0) {
+ RelocType = O65RELOC_LOW;
+ } else if (E->Op == EXPR_BYTE1) {
+ RelocType = O65RELOC_HIGH;
+ } else if (E->Op == EXPR_BYTE2) {
+ RelocType = O65RELOC_SEG;
} else {
- switch (Size) {
+ switch (Size) {
- case 1:
- RelocType = O65RELOC_LOW;
- break;
+ case 1:
+ RelocType = O65RELOC_LOW;
+ break;
- case 2:
- RelocType = O65RELOC_WORD;
- break;
+ case 2:
+ RelocType = O65RELOC_WORD;
+ break;
- case 3:
- RelocType = O65RELOC_SEGADR;
- break;
+ case 3:
+ RelocType = O65RELOC_SEGADR;
+ break;
- case 4:
- /* 4 byte expression not supported by o65 */
- return SEG_EXPR_TOO_COMPLEX;
+ case 4:
+ /* 4 byte expression not supported by o65 */
+ return SEG_EXPR_TOO_COMPLEX;
- default:
- Internal ("O65WriteExpr: Invalid expression size: %u", Size);
- RelocType = 0; /* Avoid gcc warnings */
- }
+ default:
+ Internal ("O65WriteExpr: Invalid expression size: %u", Size);
+ RelocType = 0; /* Avoid gcc warnings */
+ }
}
/* Determine which segment we're referencing */
- if (ED.ExtRef) {
- /* Imported symbol */
- RelocType |= O65SEG_UNDEF;
+ if (ED.SegRef || ED.SecRef) {
+
+ const SegDesc* Seg;
+
+ /* Segment or section reference. */
+ if (ED.SecRef) {
+ /* Get segment from section */
+ ED.SegRef = ED.SecRef->Seg;
+ }
+
+ /* Search for the segment and map it to it's o65 segmentID */
+ Seg = O65FindSeg (D, ED.SegRef);
+ if (Seg == 0) {
+ /* For some reason, we didn't find this segment in the list of
+ * segments written to the o65 file.
+ */
+ return SEG_EXPR_INVALID;
+ }
+ RelocType |= O65SegType (Seg);
+ O65RelocPutByte (D->CurReloc, RelocType);
+
+ /* Output additional data if needed */
+ switch (RelocType & O65RELOC_MASK) {
+ case O65RELOC_HIGH:
+ O65RelocPutByte (D->CurReloc, ED.Val & 0xFF);
+ break;
+ case O65RELOC_SEG:
+ O65RelocPutWord (D->CurReloc, ED.Val & 0xFFFF);
+ break;
+ }
+
+ } else if (ED.ExtRef) {
+ /* Imported symbol */
+ RelocType |= O65SEG_UNDEF;
O65RelocPutByte (D->CurReloc, RelocType);
/* Put the number of the imported symbol into the table */
O65RelocPutWord (D->CurReloc, ExtSymNum (ED.ExtRef));
- } else {
- /* Segment reference */
+ } else {
+ /* OOPS - something bad happened */
+ Internal ("External reference not handled");
}
S = Seg [I];
/* Keep the user happy */
- if (Verbose) {
- printf (" Writing `%s'\n", S->Name);
- }
+ Print (stdout, 1, " Writing `%s'\n", GetString (S->Name));
/* Write this segment */
- if (DoWrite) {
- SegWrite (D->F, S->Seg, O65WriteExpr, D);
- }
+ if (DoWrite) {
+ SegWrite (D->Filename, D->F, S->Seg, O65WriteExpr, D);
+ }
- /* Mark the segment as dumped */
- S->Seg->Dumped = 1;
+ /* Mark the segment as dumped */
+ S->Seg->Dumped = 1;
- /* Calculate the total size */
- D->SegSize += S->Seg->Size;
+ /* Calculate the total size */
+ D->SegSize += S->Seg->Size;
}
- /* Terminate the relocation table for the this segment */
+ /* Terminate the relocation table for this segment */
if (D->CurReloc) {
O65RelocPutByte (D->CurReloc, 0);
}
/* Check the size of the segment for overflow */
- if ((D->Header.Mode & MF_SIZE_32BIT) == 0 && D->SegSize > 0xFFFF) {
- Error ("Segment overflow in file `%s'", D->Filename);
+ if ((D->Header.Mode & MF_SIZE_MASK) == MF_SIZE_16BIT && D->SegSize > 0xFFFF) {
+ Error ("Segment overflow in file `%s'", D->Filename);
}
}
-static void O65WriteTextSeg (O65Desc* D, Memory* M)
+static void O65WriteTextSeg (O65Desc* D)
/* Write the code segment to the o65 output file */
{
/* Initialize variables */
-static void O65WriteDataSeg (O65Desc* D, Memory* M)
+static void O65WriteDataSeg (O65Desc* D)
/* Write the data segment to the o65 output file */
{
/* Initialize variables */
-static void O65WriteBssSeg (O65Desc* D, Memory* M)
+static void O65WriteBssSeg (O65Desc* D)
/* "Write" the bss segments to the o65 output file. This will only update
* the relevant header fields.
*/
-static void O65WriteZPSeg (O65Desc* D, Memory* M)
+static void O65WriteZPSeg (O65Desc* D)
/* "Write" the zeropage segments to the o65 output file. This will only update
* the relevant header fields.
*/
static void O65WriteImports (O65Desc* D)
/* Write the list of imported symbols to the O65 file */
{
- const ExtSym* E;
+ const ExtSym* S;
- /* Write the number of external symbols */
+ /* Write the number of imports */
WriteSize (D, ExtSymCount (D->Imports));
/* Write out the symbol names, zero terminated */
- E = ExtSymList (D->Imports);
- while (E) {
- /* Get the name */
- const char* Name = ExtSymName (E);
- /* And write it to the output file */
- WriteData (D->F, Name, strlen (Name) + 1);
- /* Next symbol */
- E = ExtSymNext (E);
+ S = ExtSymList (D->Imports);
+ while (S) {
+ /* Get the name */
+ const char* Name = GetString (ExtSymName (S));
+ /* And write it to the output file */
+ WriteData (D->F, Name, strlen (Name) + 1);
+ /* Next symbol */
+ S = ExtSymNext (S);
}
}
static void O65WriteExports (O65Desc* D)
/* Write the list of exports */
{
- /* For now... */
- WriteSize (D, 0);
+ const ExtSym* S;
+
+ /* Write the number of exports */
+ WriteSize (D, ExtSymCount (D->Exports));
+
+ /* Write out the symbol information */
+ S = ExtSymList (D->Exports);
+ while (S) {
+
+ ExprNode* Expr;
+ unsigned char SegmentID;
+ ExprDesc ED;
+
+ /* Get the name */
+ unsigned NameIdx = ExtSymName (S);
+ const char* Name = GetString (NameIdx);
+
+ /* Get the export for this symbol. We've checked before that this
+ * export does really exist, so if it is unresolved, or if we don't
+ * find it, there is an error in the linker code.
+ */
+ Export* E = FindExport (NameIdx);
+ if (E == 0 || IsUnresolvedExport (E)) {
+ Internal ("Unresolved export `%s' found in O65WriteExports", Name);
+ }
+
+ /* Get the expression for the symbol */
+ Expr = E->Expr;
+
+ /* Recursively collect information about this expression */
+ O65ParseExpr (Expr, InitExprDesc (&ED, D), 1);
+
+ /* We cannot handle expressions with imported symbols, or expressions
+ * with more than one segment reference here
+ */
+ if (ED.ExtRef != 0 || (ED.SegRef != 0 && ED.SecRef != 0)) {
+ ED.TooComplex = 1;
+ }
+
+ /* Bail out if we cannot handle the expression */
+ if (ED.TooComplex) {
+ Error ("Expression for symbol `%s' is too complex", Name);
+ }
+
+ /* Determine the segment id for the expression */
+ if (ED.SegRef != 0 || ED.SecRef != 0) {
+
+ const SegDesc* Seg;
+
+ /* Segment or section reference */
+ if (ED.SecRef != 0) {
+ ED.SegRef = ED.SecRef->Seg; /* Get segment from section */
+ }
+
+ /* Search for the segment and map it to it's o65 segmentID */
+ Seg = O65FindSeg (D, ED.SegRef);
+ if (Seg == 0) {
+ /* For some reason, we didn't find this segment in the list of
+ * segments written to the o65 file.
+ */
+ Error ("Segment for symbol `%s' is undefined", Name);
+ }
+ SegmentID = O65SegType (Seg);
+
+ } else {
+
+ /* Absolute value */
+ SegmentID = O65SEG_ABS;
+
+ }
+
+ /* Write the name to the output file */
+ WriteData (D->F, Name, strlen (Name) + 1);
+
+ /* Output the segment id followed by the literal value */
+ Write8 (D->F, SegmentID);
+ WriteSize (D, ED.Val);
+
+ /* Next symbol */
+ S = ExtSymNext (S);
+ }
}
-void O65Set816 (O65Desc* D)
+void O65Set6502 (O65Desc* D)
+/* Enable 6502 mode */
+{
+ D->Header.Mode = (D->Header.Mode & ~MF_CPU_MASK) | MF_CPU_6502;
+}
+
+
+
+void O65Set65816 (O65Desc* D)
/* Enable 816 mode */
{
- D->Header.Mode |= MF_CPU_816;
+ D->Header.Mode = (D->Header.Mode & ~MF_CPU_MASK) | MF_CPU_65816;
+}
+
+
+
+void O65SetSmallModel (O65Desc* D)
+/* Enable a small memory model executable */
+{
+ D->Header.Mode = (D->Header.Mode & ~MF_SIZE_MASK) | MF_SIZE_16BIT;
}
void O65SetLargeModel (O65Desc* D)
/* Enable a large memory model executable */
{
- D->Header.Mode |= MF_SIZE_32BIT;
+ D->Header.Mode = (D->Header.Mode & ~MF_SIZE_MASK) | MF_SIZE_32BIT;
}
-void O65SetAlignment (O65Desc* D, unsigned Align)
+void O65SetAlignment (O65Desc* D, unsigned Alignment)
/* Set the executable alignment */
{
/* Remove all alignment bits from the mode word */
- D->Header.Mode &= ~0x0003;
+ D->Header.Mode &= ~MF_ALIGN_MASK;
/* Set the alignment bits */
- switch (Align) {
- case 1: break;
- case 2: D->Header.Mode |= 0x01; break;
- case 4: D->Header.Mode |= 0x02; break;
- case 256: D->Header.Mode |= 0x03; break;
- default: Error ("Invalid alignment for O65 format: %u", Align);
+ switch (Alignment) {
+ case 1: D->Header.Mode |= MF_ALIGN_1; break;
+ case 2: D->Header.Mode |= MF_ALIGN_2; break;
+ case 4: D->Header.Mode |= MF_ALIGN_4; break;
+ case 256: D->Header.Mode |= MF_ALIGN_256; break;
+ default: Error ("Invalid alignment for O65 format: %u", Alignment);
}
}
-void O65SetOS (O65Desc* D, unsigned OS)
+void O65SetOS (O65Desc* D, unsigned OS, unsigned Version, unsigned Id)
/* Set an option describing the target operating system */
{
- static const unsigned char OSA65 [2] = { O65OS_OSA65, 0 };
- static const unsigned char Lunix [2] = { O65OS_LUNIX, 0 };
+ /* Setup the option data */
+ unsigned char Opt[4];
+ Opt[0] = OS;
+ Opt[1] = Version;
- /* Write the correct option */
+ /* Write the correct option length */
switch (OS) {
- case O65OS_OSA65:
- O65SetOption (D, O65OPT_OS, OSA65, sizeof (OSA65));
- break;
-
- case O65OS_LUNIX:
- O65SetOption (D, O65OPT_OS, Lunix, sizeof (Lunix));
+ case O65OS_CC65:
+ /* Set the 16 bit id */
+ Opt[2] = (unsigned char) Id;
+ Opt[3] = (unsigned char) (Id >> 8);
+ O65SetOption (D, O65OPT_OS, Opt, 4);
break;
default:
- Internal ("Trying to set invalid O65 operating system: %u", OS);
+ /* No id for OS/A65, Lunix, and unknown OSes */
+ O65SetOption (D, O65OPT_OS, Opt, 2);
+ break;
}
}
-ExtSym* O65GetImport (O65Desc* D, const char* Ident)
+ExtSym* O65GetImport (O65Desc* D, unsigned Ident)
/* Return the imported symbol or NULL if not found */
{
/* Retrieve the symbol from the table */
-void O65SetImport (O65Desc* D, const char* Ident)
+void O65SetImport (O65Desc* D, unsigned Ident)
/* Set an imported identifier */
{
/* Insert the entry into the table */
-ExtSym* O65GetExport (O65Desc* D, const char* Ident)
+ExtSym* O65GetExport (O65Desc* D, unsigned Ident)
/* Return the exported symbol or NULL if not found */
{
/* Retrieve the symbol from the table */
-void O65SetExport (O65Desc* D, const char* Ident)
+void O65SetExport (O65Desc* D, unsigned Ident)
/* Set an exported identifier */
{
+ /* Get the export for this symbol and check if it does exist and is
+ * a resolved symbol.
+ */
+ Export* E = FindExport (Ident);
+ if (E == 0 || IsUnresolvedExport (E)) {
+ Error ("Unresolved export: `%s'", GetString (Ident));
+ }
+
/* Insert the entry into the table */
NewExtSym (D->Exports, Ident);
}
-static void O65SetupSegments (O65Desc* D, Memory* M)
+static void O65SetupSegments (O65Desc* D, File* F)
/* Setup segment assignments */
{
- MemListNode* N;
- SegDesc* S;
+ unsigned I;
unsigned TextIdx, DataIdx, BssIdx, ZPIdx;
/* Initialize the counters */
D->BssCount = 0;
D->ZPCount = 0;
- /* Walk through the memory list and count the segment types */
- N = M->SegList;
- while (N) {
-
- /* Get the segment from the list node */
- S = N->Seg;
-
- /* Check the segment type. */
- switch (O65SegType (S)) {
- case O65SEG_TEXT: D->TextCount++; break;
- case O65SEG_DATA: D->DataCount++; break;
- case O65SEG_BSS: D->BssCount++; break;
- case O65SEG_ZP: D->ZPCount++; break;
- default: Internal ("Invalid return from O65SegType");
- }
-
- /* Next segment node */
- N = N->Next;
+ /* Walk over the memory list */
+ for (I = 0; I < CollCount (&F->MemoryAreas); ++I) {
+ /* Get this entry */
+ MemoryArea* M = CollAtUnchecked (&F->MemoryAreas, I);
+
+ /* Walk through the segment list and count the segment types */
+ unsigned J;
+ for (J = 0; J < CollCount (&M->SegList); ++J) {
+
+ /* Get the segment */
+ SegDesc* S = CollAtUnchecked (&M->SegList, J);
+
+ /* Check the segment type. */
+ switch (O65SegType (S)) {
+ case O65SEG_TEXT: D->TextCount++; break;
+ case O65SEG_DATA: D->DataCount++; break;
+ case O65SEG_BSS: D->BssCount++; break;
+ case O65SEG_ZP: D->ZPCount++; break;
+ default: Internal ("Invalid return from O65SegType");
+ }
+ }
}
/* Allocate memory according to the numbers */
/* Walk again through the list and setup the segment arrays */
TextIdx = DataIdx = BssIdx = ZPIdx = 0;
- N = M->SegList;
- while (N) {
-
- /* Get the segment from the list node */
- S = N->Seg;
-
- /* Check the segment type. */
- switch (O65SegType (S)) {
- case O65SEG_TEXT: D->TextSeg [TextIdx++] = S; break;
- case O65SEG_DATA: D->DataSeg [DataIdx++] = S; break;
- case O65SEG_BSS: D->BssSeg [BssIdx++] = S; break;
- case O65SEG_ZP: D->ZPSeg [ZPIdx++] = S; break;
- default: Internal ("Invalid return from O65SegType");
- }
-
- /* Next segment node */
- N = N->Next;
+ for (I = 0; I < CollCount (&F->MemoryAreas); ++I) {
+ /* Get this entry */
+ MemoryArea* M = CollAtUnchecked (&F->MemoryAreas, I);
+
+ /* Walk over the segment list and check the segment types */
+ unsigned J;
+ for (J = 0; J < CollCount (&M->SegList); ++J) {
+
+ /* Get the segment */
+ SegDesc* S = CollAtUnchecked (&M->SegList, J);
+
+ /* Check the segment type. */
+ switch (O65SegType (S)) {
+ case O65SEG_TEXT: D->TextSeg [TextIdx++] = S; break;
+ case O65SEG_DATA: D->DataSeg [DataIdx++] = S; break;
+ case O65SEG_BSS: D->BssSeg [BssIdx++] = S; break;
+ case O65SEG_ZP: D->ZPSeg [ZPIdx++] = S; break;
+ default: Internal ("Invalid return from O65SegType");
+ }
+ }
}
}
-static int O65Unresolved (const char* Name, void* D)
+static int O65Unresolved (unsigned Name, void* D)
/* Called if an unresolved symbol is encountered */
{
/* Check if the symbol is an imported o65 symbol */
+static void O65SetupHeader (O65Desc* D)
+/* Set additional stuff in the header */
+{
+ /* Set the base addresses of the segments */
+ if (D->TextCount > 0) {
+ SegDesc* FirstSeg = D->TextSeg [0];
+ D->Header.TextBase = FirstSeg->Seg->PC;
+ }
+ if (D->DataCount > 0) {
+ SegDesc* FirstSeg = D->DataSeg [0];
+ D->Header.DataBase = FirstSeg->Seg->PC;
+ }
+ if (D->BssCount > 0) {
+ SegDesc* FirstSeg = D->BssSeg [0];
+ D->Header.BssBase = FirstSeg->Seg->PC;
+ }
+ if (D->ZPCount > 0) {
+ SegDesc* FirstSeg = D->ZPSeg [0];
+ D->Header.ZPBase = FirstSeg->Seg->PC;
+ }
+
+ /* If we have byte wise relocation and an alignment of 1, we can set
+ * the "simple addressing" bit in the header.
+ */
+ if ((D->Header.Mode & MF_RELOC_MASK) == MF_RELOC_BYTE &&
+ (D->Header.Mode & MF_ALIGN_MASK) == MF_ALIGN_1) {
+ D->Header.Mode = (D->Header.Mode & ~MF_ADDR_MASK) | MF_ADDR_SIMPLE;
+ }
+}
+
+
+
void O65WriteTarget (O65Desc* D, File* F)
/* Write an o65 output file */
{
- Memory* M;
- char OptBuf [256]; /* Buffer for option strings */
- time_t T;
+ char OptBuf [256]; /* Buffer for option strings */
+ unsigned OptLen;
+ time_t T;
/* Place the filename in the control structure */
- D->Filename = F->Name;
-
- /* The o65 format uses only one memory area per file. Check that. */
- M = F->MemList;
- if (M->Next != 0) {
- Warning ("Cannot handle more than one memory area for o65 format");
- }
+ D->Filename = GetString (F->Name);
/* Check for unresolved symbols. The function O65Unresolved is called
* if we get an unresolved symbol.
*/
D->Undef = 0; /* Reset the counter */
- CheckExports (O65Unresolved, D);
+ CheckUnresolvedImports (O65Unresolved, D);
if (D->Undef > 0) {
/* We had unresolved symbols, cannot create output file */
Error ("%u unresolved external(s) found - cannot create output file", D->Undef);
}
/* Setup the segment arrays */
- O65SetupSegments (D, M);
+ O65SetupSegments (D, F);
+
+ /* Setup additional stuff in the header */
+ O65SetupHeader (D);
/* Open the file */
- D->F = fopen (F->Name, "wb");
+ D->F = fopen (D->Filename, "wb");
if (D->F == 0) {
- Error ("Cannot open `%s': %s", F->Name, strerror (errno));
+ Error ("Cannot open `%s': %s", D->Filename, strerror (errno));
}
/* Keep the user happy */
- if (Verbose) {
- printf ("Opened `%s'...\n", F->Name);
- }
+ Print (stdout, 1, "Opened `%s'...\n", D->Filename);
/* Define some more options: A timestamp and the linker version */
T = time (0);
strcpy (OptBuf, ctime (&T));
- O65SetOption (D, O65OPT_TIMESTAMP, OptBuf, strlen (OptBuf) + 1);
- sprintf (OptBuf, "ld65 V%u.%u.%u", VER_MAJOR, VER_MINOR, VER_PATCH);
+ OptLen = strlen (OptBuf);
+ while (OptLen > 0 && IsControl (OptBuf[OptLen-1])) {
+ --OptLen;
+ }
+ OptBuf[OptLen] = '\0';
+ O65SetOption (D, O65OPT_TIMESTAMP, OptBuf, OptLen + 1);
+ sprintf (OptBuf, "ld65 V%s", GetVersionAsString ());
O65SetOption (D, O65OPT_ASM, OptBuf, strlen (OptBuf) + 1);
/* Write the header */
O65WriteHeader (D);
/* Write the text segment */
- O65WriteTextSeg (D, M);
+ O65WriteTextSeg (D);
/* Write the data segment */
- O65WriteDataSeg (D, M);
+ O65WriteDataSeg (D);
/* "Write" the bss segments */
- O65WriteBssSeg (D, M);
+ O65WriteBssSeg (D);
/* "Write" the zeropage segments */
- O65WriteZPSeg (D, M);
+ O65WriteZPSeg (D);
/* Write the undefined references list */
O65WriteImports (D);
/* Close the file */
if (fclose (D->F) != 0) {
- Error ("Cannot write to `%s': %s", F->Name, strerror (errno));
+ Error ("Cannot write to `%s': %s", D->Filename, strerror (errno));
}
/* Reset the file and filename */
projects / cc65 / blobdiff