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https://github.com/UberGames/lilium-voyager.git
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1047 lines
22 KiB
C
Executable file
1047 lines
22 KiB
C
Executable file
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "cmdlib.h"
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#include "mathlib.h"
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#include "qfiles.h"
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/* MSVC-ism fix. */
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#define atoi(s) strtoul(s,NULL,10)
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char outputFilename[MAX_OS_PATH];
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// the zero page size is just used for detecting run time faults
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#define ZERO_PAGE_SIZE 0 // 256
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typedef enum {
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OP_UNDEF,
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OP_IGNORE,
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OP_BREAK,
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OP_ENTER,
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OP_LEAVE,
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OP_CALL,
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OP_PUSH,
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OP_POP,
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OP_CONST,
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OP_LOCAL,
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OP_JUMP,
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//-------------------
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OP_EQ,
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OP_NE,
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OP_LTI,
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OP_LEI,
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OP_GTI,
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OP_GEI,
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OP_LTU,
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OP_LEU,
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OP_GTU,
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OP_GEU,
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OP_EQF,
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OP_NEF,
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OP_LTF,
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OP_LEF,
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OP_GTF,
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OP_GEF,
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//-------------------
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OP_LOAD1,
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OP_LOAD2,
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OP_LOAD4,
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OP_STORE1,
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OP_STORE2,
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OP_STORE4, // *(stack[top-1]) = stack[yop
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OP_ARG,
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OP_BLOCK_COPY,
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//-------------------
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OP_SEX8,
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OP_SEX16,
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OP_NEGI,
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OP_ADD,
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OP_SUB,
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OP_DIVI,
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OP_DIVU,
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OP_MODI,
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OP_MODU,
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OP_MULI,
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OP_MULU,
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OP_BAND,
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OP_BOR,
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OP_BXOR,
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OP_BCOM,
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OP_LSH,
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OP_RSHI,
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OP_RSHU,
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OP_NEGF,
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OP_ADDF,
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OP_SUBF,
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OP_DIVF,
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OP_MULF,
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OP_CVIF,
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OP_CVFI
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} opcode_t;
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typedef struct {
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int imageBytes; // after decompression
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int entryPoint;
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int stackBase;
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int stackSize;
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} executableHeader_t;
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typedef enum {
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CODESEG,
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DATASEG, // initialized 32 bit data, will be byte swapped
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LITSEG, // strings
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BSSSEG, // 0 filled
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NUM_SEGMENTS
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} segmentName_t;
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#define MAX_IMAGE 0x400000
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typedef struct {
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byte image[MAX_IMAGE];
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int imageUsed;
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int segmentBase; // only valid on second pass
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} segment_t;
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typedef struct symbol_s {
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struct symbol_s *next;
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int hash;
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segment_t *segment;
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char *name;
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int value;
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} symbol_t;
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segment_t segment[NUM_SEGMENTS];
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segment_t *currentSegment;
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int passNumber;
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int numSymbols;
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int errorCount;
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symbol_t *symbols;
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symbol_t *lastSymbol;
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#define MAX_ASM_FILES 256
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int numAsmFiles;
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char *asmFiles[MAX_ASM_FILES];
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char *asmFileNames[MAX_ASM_FILES];
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int currentFileIndex;
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char *currentFileName;
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int currentFileLine;
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//int stackSize = 16384;
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int stackSize = 0x10000;
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// we need to convert arg and ret instructions to
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// stores to the local stack frame, so we need to track the
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// characteristics of the current functions stack frame
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int currentLocals; // bytes of locals needed by this function
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int currentArgs; // bytes of largest argument list called from this function
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int currentArgOffset; // byte offset in currentArgs to store next arg, reset each call
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#define MAX_LINE_LENGTH 1024
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char lineBuffer[MAX_LINE_LENGTH];
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int lineParseOffset;
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char token[MAX_LINE_LENGTH];
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int instructionCount;
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typedef struct {
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char *name;
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int opcode;
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} sourceOps_t;
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sourceOps_t sourceOps[] = {
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#include "opstrings.h"
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};
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#define NUM_SOURCE_OPS ( sizeof( sourceOps ) / sizeof( sourceOps[0] ) )
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int opcodesHash[ NUM_SOURCE_OPS ];
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/*
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=============
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HashString
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=============
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*/
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int HashString( char *s ) {
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int v = 0;
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while ( *s ) {
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v += *s;
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s++;
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}
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return v;
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}
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/*
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============
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CodeError
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============
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*/
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void CodeError( char *fmt, ... ) {
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va_list argptr;
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errorCount++;
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printf( "%s:%i ", currentFileName, currentFileLine );
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va_start( argptr,fmt );
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vprintf( fmt,argptr );
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va_end( argptr );
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}
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/*
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============
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EmitByte
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============
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*/
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void EmitByte( segment_t *seg, int v ) {
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if ( seg->imageUsed >= MAX_IMAGE ) {
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Error( "MAX_IMAGE" );
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}
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seg->image[ seg->imageUsed ] = v;
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seg->imageUsed++;
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}
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/*
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============
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EmitInt
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============
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*/
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void EmitInt( segment_t *seg, int v ) {
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if ( seg->imageUsed >= MAX_IMAGE - 4) {
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Error( "MAX_IMAGE" );
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}
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seg->image[ seg->imageUsed ] = v & 255;
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seg->image[ seg->imageUsed + 1 ] = ( v >> 8 ) & 255;
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seg->image[ seg->imageUsed + 2 ] = ( v >> 16 ) & 255;
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seg->image[ seg->imageUsed + 3 ] = ( v >> 24 ) & 255;
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seg->imageUsed += 4;
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}
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/*
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============
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DefineSymbol
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Symbols can only be defined on pass 0
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============
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*/
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void DefineSymbol( char *sym, int value ) {
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symbol_t *s, *after;
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char expanded[MAX_LINE_LENGTH];
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int hash;
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if ( passNumber == 1 ) {
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return;
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}
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// TTimo
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// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=381
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// as a security, bail out if vmMain entry point is not first
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if (!Q_stricmp(sym, "vmMain"))
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if (value)
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Error( "vmMain must be the first symbol in the qvm (got offset %d)\n", value );
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// add the file prefix to local symbols to guarantee unique
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if ( sym[0] == '$' ) {
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sprintf( expanded, "%s_%i", sym, currentFileIndex );
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sym = expanded;
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}
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hash = HashString( sym );
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for ( s = symbols ; s ; s = s->next ) {
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if ( hash == s->hash && !strcmp( sym, s->name ) ) {
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CodeError( "Multiple definitions for %s\n", sym );
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return;
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}
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}
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s = malloc( sizeof( *s ) );
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s->name = copystring( sym );
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s->hash = hash;
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s->value = value;
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s->segment = currentSegment;
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lastSymbol = s; /* for the move-to-lit-segment byteswap hack */
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// insert it in order
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if ( !symbols || s->value < symbols->value ) {
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s->next = symbols;
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symbols = s;
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return;
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}
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for ( after = symbols ; after->next && after->next->value < value ; after = after->next ) {
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}
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s->next = after->next;
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after->next = s;
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}
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/*
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============
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LookupSymbol
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Symbols can only be evaluated on pass 1
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============
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*/
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int LookupSymbol( char *sym ) {
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symbol_t *s;
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char expanded[MAX_LINE_LENGTH];
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int hash;
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if ( passNumber == 0 ) {
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return 0;
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}
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// add the file prefix to local symbols to guarantee unique
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if ( sym[0] == '$' ) {
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sprintf( expanded, "%s_%i", sym, currentFileIndex );
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sym = expanded;
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}
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hash = HashString( sym );
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for ( s = symbols ; s ; s = s->next ) {
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if ( hash == s->hash && !strcmp( sym, s->name ) ) {
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return s->segment->segmentBase + s->value;
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}
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}
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CodeError( "ERROR: symbol %s undefined\n", sym );
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passNumber = 0;
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DefineSymbol( sym, 0 ); // so more errors aren't printed
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passNumber = 1;
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return 0;
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}
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/*
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==============
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ExtractLine
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Extracts the next line from the given text block.
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If a full line isn't parsed, returns NULL
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Otherwise returns the updated parse pointer
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===============
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*/
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char *ExtractLine( char *data ) {
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int i;
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currentFileLine++;
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lineParseOffset = 0;
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token[0] = 0;
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if ( data[0] == 0 ) {
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lineBuffer[0] = 0;
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return NULL;
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}
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for ( i = 0 ; i < MAX_LINE_LENGTH ; i++ ) {
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if ( data[i] == 0 || data[i] == '\n' ) {
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break;
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}
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}
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if ( i == MAX_LINE_LENGTH ) {
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CodeError( "MAX_LINE_LENGTH" );
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return data;
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}
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memcpy( lineBuffer, data, i );
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lineBuffer[i] = 0;
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data += i;
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if ( data[0] == '\n' ) {
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data++;
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}
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return data;
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}
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/*
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==============
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Parse
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Parse a token out of linebuffer
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==============
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*/
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qboolean Parse( void ) {
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int c;
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int len;
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len = 0;
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token[0] = 0;
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// skip whitespace
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while ( lineBuffer[ lineParseOffset ] <= ' ' ) {
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if ( lineBuffer[ lineParseOffset ] == 0 ) {
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return qfalse;
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}
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lineParseOffset++;
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}
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// skip ; comments
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c = lineBuffer[ lineParseOffset ];
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if ( c == ';' ) {
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return qfalse;
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}
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// parse a regular word
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do {
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token[len] = c;
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len++;
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lineParseOffset++;
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c = lineBuffer[ lineParseOffset ];
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} while (c>32);
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token[len] = 0;
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return qtrue;
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}
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/*
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==============
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ParseValue
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==============
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*/
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int ParseValue( void ) {
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Parse();
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return atoi( token );
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}
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/*
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==============
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ParseExpression
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==============
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*/
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int ParseExpression(void) {
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int i, j;
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char sym[MAX_LINE_LENGTH];
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int v;
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if ( token[0] == '-' ) {
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i = 1;
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} else {
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i = 0;
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}
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for ( ; i < MAX_LINE_LENGTH ; i++ ) {
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if ( token[i] == '+' || token[i] == '-' || token[i] == 0 ) {
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break;
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}
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}
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memcpy( sym, token, i );
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sym[i] = 0;
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if ( ( sym[0] >= '0' && sym[0] <= '9' ) || sym[0] == '-' ) {
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v = atoi( sym );
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} else {
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v = LookupSymbol( sym );
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}
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// parse add / subtract offsets
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while ( token[i] != 0 ) {
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for ( j = i + 1 ; j < MAX_LINE_LENGTH ; j++ ) {
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if ( token[j] == '+' || token[j] == '-' || token[j] == 0 ) {
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break;
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}
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}
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memcpy( sym, token+i+1, j-i-1 );
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sym[j-i-1] = 0;
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if ( token[i] == '+' ) {
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v += atoi( sym );
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}
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if ( token[i] == '-' ) {
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v -= atoi( sym );
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}
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i = j;
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}
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return v;
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}
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/*
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==============
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HackToSegment
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BIG HACK: I want to put all 32 bit values in the data
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segment so they can be byte swapped, and all char data in the lit
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segment, but switch jump tables are emited in the lit segment and
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initialized strng variables are put in the data segment.
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I can change segments here, but I also need to fixup the
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label that was just defined
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Note that the lit segment is read-write in the VM, so strings
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aren't read only as in some architectures.
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==============
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*/
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void HackToSegment( segmentName_t seg ) {
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if ( currentSegment == &segment[seg] ) {
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return;
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}
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currentSegment = &segment[seg];
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if ( passNumber == 0 ) {
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lastSymbol->segment = currentSegment;
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|
lastSymbol->value = currentSegment->imageUsed;
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}
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}
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/*
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|
==============
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AssembleLine
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|
|
|
==============
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|
*/
|
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void AssembleLine( void ) {
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int v, v2;
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int i;
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int hash;
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Parse();
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|
if ( !token[0] ) {
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return;
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}
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hash = HashString( token );
|
|
|
|
for ( i = 0 ; i < NUM_SOURCE_OPS ; i++ ) {
|
|
if ( hash == opcodesHash[i] && !strcmp( token, sourceOps[i].name ) ) {
|
|
int opcode;
|
|
int expression;
|
|
|
|
if ( sourceOps[i].opcode == OP_UNDEF ) {
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|
CodeError( "Undefined opcode: %s\n", token );
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|
}
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|
if ( sourceOps[i].opcode == OP_IGNORE ) {
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|
return; // we ignore most conversions
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|
}
|
|
|
|
// sign extensions need to check next parm
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|
opcode = sourceOps[i].opcode;
|
|
if ( opcode == OP_SEX8 ) {
|
|
Parse();
|
|
if ( token[0] == '1' ) {
|
|
opcode = OP_SEX8;
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|
} else if ( token[0] == '2' ) {
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|
opcode = OP_SEX16;
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|
} else {
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|
CodeError( "Bad sign extension: %s\n", token );
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|
return;
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|
}
|
|
}
|
|
|
|
// check for expression
|
|
Parse();
|
|
if ( token[0] && sourceOps[i].opcode != OP_CVIF
|
|
&& sourceOps[i].opcode != OP_CVFI ) {
|
|
expression = ParseExpression();
|
|
|
|
// code like this can generate non-dword block copies:
|
|
// auto char buf[2] = " ";
|
|
// we are just going to round up. This might conceivably
|
|
// be incorrect if other initialized chars follow.
|
|
if ( opcode == OP_BLOCK_COPY ) {
|
|
expression = ( expression + 3 ) & ~3;
|
|
}
|
|
|
|
EmitByte( &segment[CODESEG], opcode );
|
|
EmitInt( &segment[CODESEG], expression );
|
|
} else {
|
|
EmitByte( &segment[CODESEG], opcode );
|
|
}
|
|
|
|
instructionCount++;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// call instructions reset currentArgOffset
|
|
if ( !strncmp( token, "CALL", 4 ) ) {
|
|
EmitByte( &segment[CODESEG], OP_CALL );
|
|
instructionCount++;
|
|
currentArgOffset = 0;
|
|
return;
|
|
}
|
|
|
|
// arg is converted to a reversed store
|
|
if ( !strncmp( token, "ARG", 3 ) ) {
|
|
EmitByte( &segment[CODESEG], OP_ARG );
|
|
instructionCount++;
|
|
if ( 8 + currentArgOffset >= 256 ) {
|
|
CodeError( "currentArgOffset >= 256" );
|
|
return;
|
|
}
|
|
EmitByte( &segment[CODESEG], 8 + currentArgOffset );
|
|
currentArgOffset += 4;
|
|
return;
|
|
}
|
|
|
|
// ret just leaves something on the op stack
|
|
if ( !strncmp( token, "RET", 3 ) ) {
|
|
EmitByte( &segment[CODESEG], OP_LEAVE );
|
|
instructionCount++;
|
|
EmitInt( &segment[CODESEG], 8 + currentLocals + currentArgs );
|
|
return;
|
|
}
|
|
|
|
// pop is needed to discard the return value of
|
|
// a function
|
|
if ( !strncmp( token, "pop", 3 ) ) {
|
|
EmitByte( &segment[CODESEG], OP_POP );
|
|
instructionCount++;
|
|
return;
|
|
}
|
|
|
|
// address of a parameter is converted to OP_LOCAL
|
|
if ( !strncmp( token, "ADDRF", 5 ) ) {
|
|
instructionCount++;
|
|
Parse();
|
|
v = ParseExpression();
|
|
v = 16 + currentArgs + currentLocals + v;
|
|
EmitByte( &segment[CODESEG], OP_LOCAL );
|
|
EmitInt( &segment[CODESEG], v );
|
|
return;
|
|
}
|
|
|
|
// address of a local is converted to OP_LOCAL
|
|
if ( !strncmp( token, "ADDRL", 5 ) ) {
|
|
instructionCount++;
|
|
Parse();
|
|
v = ParseExpression();
|
|
v = 8 + currentArgs + v;
|
|
EmitByte( &segment[CODESEG], OP_LOCAL );
|
|
EmitInt( &segment[CODESEG], v );
|
|
return;
|
|
}
|
|
|
|
if ( !strcmp( token, "proc" ) ) {
|
|
char name[1024];
|
|
|
|
Parse(); // function name
|
|
strcpy( name, token );
|
|
|
|
DefineSymbol( token, instructionCount ); // segment[CODESEG].imageUsed );
|
|
|
|
currentLocals = ParseValue(); // locals
|
|
currentLocals = ( currentLocals + 3 ) & ~3;
|
|
currentArgs = ParseValue(); // arg marshalling
|
|
currentArgs = ( currentArgs + 3 ) & ~3;
|
|
|
|
if ( 8 + currentLocals + currentArgs >= 32767 ) {
|
|
CodeError( "Locals > 32k in %s\n", name );
|
|
}
|
|
|
|
instructionCount++;
|
|
EmitByte( &segment[CODESEG], OP_ENTER );
|
|
EmitInt( &segment[CODESEG], 8 + currentLocals + currentArgs );
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "endproc" ) ) {
|
|
Parse(); // skip the function name
|
|
v = ParseValue(); // locals
|
|
v2 = ParseValue(); // arg marshalling
|
|
|
|
// all functions must leave something on the opstack
|
|
instructionCount++;
|
|
EmitByte( &segment[CODESEG], OP_PUSH );
|
|
|
|
instructionCount++;
|
|
EmitByte( &segment[CODESEG], OP_LEAVE );
|
|
EmitInt( &segment[CODESEG], 8 + currentLocals + currentArgs );
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
if ( !strcmp( token, "address" ) ) {
|
|
Parse();
|
|
v = ParseExpression();
|
|
|
|
HackToSegment( DATASEG );
|
|
EmitInt( currentSegment, v );
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "export" ) ) {
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "import" ) ) {
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "code" ) ) {
|
|
currentSegment = &segment[CODESEG];
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "bss" ) ) {
|
|
currentSegment = &segment[BSSSEG];
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "data" ) ) {
|
|
currentSegment = &segment[DATASEG];
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "lit" ) ) {
|
|
currentSegment = &segment[LITSEG];
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "line" ) ) {
|
|
return;
|
|
}
|
|
if ( !strcmp( token, "file" ) ) {
|
|
return;
|
|
}
|
|
|
|
if ( !strcmp( token, "equ" ) ) {
|
|
char name[1024];
|
|
|
|
Parse();
|
|
strcpy( name, token );
|
|
Parse();
|
|
DefineSymbol( name, atoi(token) );
|
|
return;
|
|
}
|
|
|
|
if ( !strcmp( token, "align" ) ) {
|
|
v = ParseValue();
|
|
currentSegment->imageUsed = (currentSegment->imageUsed + v - 1 ) & ~( v - 1 );
|
|
return;
|
|
}
|
|
|
|
if ( !strcmp( token, "skip" ) ) {
|
|
v = ParseValue();
|
|
currentSegment->imageUsed += v;
|
|
return;
|
|
}
|
|
|
|
if ( !strcmp( token, "byte" ) ) {
|
|
v = ParseValue();
|
|
v2 = ParseValue();
|
|
|
|
if ( v == 1 ) {
|
|
HackToSegment( LITSEG );
|
|
} else if ( v == 4 ) {
|
|
HackToSegment( DATASEG );
|
|
} else if ( v == 2 ) {
|
|
CodeError( "16 bit initialized data not supported" );
|
|
}
|
|
|
|
// emit little endien
|
|
for ( i = 0 ; i < v ; i++ ) {
|
|
EmitByte( currentSegment, v2 );
|
|
v2 >>= 8;
|
|
}
|
|
return;
|
|
}
|
|
|
|
// code labels are emited as instruction counts, not byte offsets,
|
|
// because the physical size of the code will change with
|
|
// different run time compilers and we want to minimize the
|
|
// size of the required translation table
|
|
if ( !strncmp( token, "LABEL", 5 ) ) {
|
|
Parse();
|
|
if ( currentSegment == &segment[CODESEG] ) {
|
|
DefineSymbol( token, instructionCount );
|
|
} else {
|
|
DefineSymbol( token, currentSegment->imageUsed );
|
|
}
|
|
return;
|
|
}
|
|
|
|
CodeError( "Unknown token: %s\n", token );
|
|
}
|
|
|
|
/*
|
|
==============
|
|
InitTables
|
|
==============
|
|
*/
|
|
void InitTables( void ) {
|
|
int i;
|
|
|
|
for ( i = 0 ; i < NUM_SOURCE_OPS ; i++ ) {
|
|
opcodesHash[i] = HashString( sourceOps[i].name );
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
WriteMapFile
|
|
==============
|
|
*/
|
|
void WriteMapFile( void ) {
|
|
FILE *f;
|
|
symbol_t *s;
|
|
char imageName[MAX_OS_PATH];
|
|
int seg;
|
|
|
|
strcpy( imageName, outputFilename );
|
|
StripExtension( imageName );
|
|
strcat( imageName, ".map" );
|
|
|
|
printf( "Writing %s...\n", imageName );
|
|
f = SafeOpenWrite( imageName );
|
|
for ( seg = CODESEG ; seg <= BSSSEG ; seg++ ) {
|
|
for ( s = symbols ; s ; s = s->next ) {
|
|
if ( s->name[0] == '$' ) {
|
|
continue; // skip locals
|
|
}
|
|
if ( &segment[seg] != s->segment ) {
|
|
continue;
|
|
}
|
|
fprintf( f, "%i %8x %s\n", seg, s->value, s->name );
|
|
}
|
|
}
|
|
fclose( f );
|
|
}
|
|
|
|
/*
|
|
===============
|
|
WriteVmFile
|
|
===============
|
|
*/
|
|
void WriteVmFile( void ) {
|
|
char imageName[MAX_OS_PATH];
|
|
vmHeader_t header;
|
|
FILE *f;
|
|
|
|
printf( "%i total errors\n", errorCount );
|
|
strcpy( imageName, outputFilename );
|
|
StripExtension( imageName );
|
|
strcat( imageName, ".qvm" );
|
|
|
|
remove( imageName );
|
|
|
|
printf( "code segment: %7i\n", segment[CODESEG].imageUsed );
|
|
printf( "data segment: %7i\n", segment[DATASEG].imageUsed );
|
|
printf( "lit segment: %7i\n", segment[LITSEG].imageUsed );
|
|
printf( "bss segment: %7i\n", segment[BSSSEG].imageUsed );
|
|
printf( "instruction count: %i\n", instructionCount );
|
|
if ( errorCount != 0 ) {
|
|
printf( "Not writing a file due to errors\n" );
|
|
return;
|
|
}
|
|
|
|
header.vmMagic = VM_MAGIC;
|
|
header.instructionCount = instructionCount;
|
|
header.codeOffset = sizeof( header );
|
|
header.codeLength = segment[CODESEG].imageUsed;
|
|
header.dataOffset = header.codeOffset + segment[CODESEG].imageUsed;
|
|
header.dataLength = segment[DATASEG].imageUsed;
|
|
header.litLength = segment[LITSEG].imageUsed;
|
|
header.bssLength = segment[BSSSEG].imageUsed;
|
|
|
|
printf( "Writing to %s\n", imageName );
|
|
|
|
CreatePath( imageName );
|
|
f = SafeOpenWrite( imageName );
|
|
SafeWrite( f, &header, sizeof( header ) );
|
|
SafeWrite( f, &segment[CODESEG].image, segment[CODESEG].imageUsed );
|
|
SafeWrite( f, &segment[DATASEG].image, segment[DATASEG].imageUsed );
|
|
SafeWrite( f, &segment[LITSEG].image, segment[LITSEG].imageUsed );
|
|
fclose( f );
|
|
}
|
|
|
|
/*
|
|
===============
|
|
Assemble
|
|
===============
|
|
*/
|
|
void Assemble( void ) {
|
|
int i;
|
|
char filename[MAX_OS_PATH];
|
|
char *ptr;
|
|
|
|
printf( "outputFilename: %s\n", outputFilename );
|
|
|
|
for ( i = 0 ; i < numAsmFiles ; i++ ) {
|
|
strcpy( filename, asmFileNames[ i ] );
|
|
DefaultExtension( filename, ".asm" );
|
|
LoadFile( filename, (void **)&asmFiles[i] );
|
|
}
|
|
|
|
// assemble
|
|
for ( passNumber = 0 ; passNumber < 2 ; passNumber++ ) {
|
|
segment[LITSEG].segmentBase = segment[DATASEG].imageUsed;
|
|
segment[BSSSEG].segmentBase = segment[LITSEG].segmentBase + segment[LITSEG].imageUsed;
|
|
for ( i = 0 ; i < NUM_SEGMENTS ; i++ ) {
|
|
segment[i].imageUsed = 0;
|
|
}
|
|
segment[DATASEG].imageUsed = 4; // skip the 0 byte, so NULL pointers are fixed up properly
|
|
instructionCount = 0;
|
|
|
|
for ( i = 0 ; i < numAsmFiles ; i++ ) {
|
|
currentFileIndex = i;
|
|
currentFileName = asmFileNames[ i ];
|
|
currentFileLine = 0;
|
|
printf("pass %i: %s\n", passNumber, currentFileName );
|
|
ptr = asmFiles[i];
|
|
while ( ptr ) {
|
|
ptr = ExtractLine( ptr );
|
|
AssembleLine();
|
|
}
|
|
}
|
|
|
|
// align all segment
|
|
for ( i = 0 ; i < NUM_SEGMENTS ; i++ ) {
|
|
segment[i].imageUsed = (segment[i].imageUsed + 3) & ~3;
|
|
}
|
|
}
|
|
|
|
// reserve the stack in bss
|
|
DefineSymbol( "_stackStart", segment[BSSSEG].imageUsed );
|
|
segment[BSSSEG].imageUsed += stackSize;
|
|
DefineSymbol( "_stackEnd", segment[BSSSEG].imageUsed );
|
|
|
|
// write the image
|
|
WriteVmFile();
|
|
|
|
// write the map file even if there were errors
|
|
WriteMapFile();
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
ParseOptionFile
|
|
|
|
=============
|
|
*/
|
|
void ParseOptionFile( const char *filename ) {
|
|
char expanded[MAX_OS_PATH];
|
|
char *text, *text_p;
|
|
|
|
strcpy( expanded, filename );
|
|
DefaultExtension( expanded, ".q3asm" );
|
|
LoadFile( expanded, (void **)&text );
|
|
if ( !text ) {
|
|
return;
|
|
}
|
|
|
|
text_p = text;
|
|
|
|
while( ( text_p = COM_Parse( text_p ) ) != 0 ) {
|
|
if ( !strcmp( com_token, "-o" ) ) {
|
|
// allow output override in option file
|
|
text_p = COM_Parse( text_p );
|
|
if ( text_p ) {
|
|
strcpy( outputFilename, com_token );
|
|
}
|
|
continue;
|
|
}
|
|
|
|
asmFileNames[ numAsmFiles ] = copystring( com_token );
|
|
numAsmFiles++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
==============
|
|
main
|
|
==============
|
|
*/
|
|
int main( int argc, char **argv ) {
|
|
int i;
|
|
double start, end;
|
|
|
|
// _chdir( "/quake3/jccode/cgame/lccout" ); // hack for vc profiler
|
|
|
|
if ( argc < 2 ) {
|
|
Error( "usage: q3asm [-o output] <files> or q3asm -f <listfile>\n" );
|
|
}
|
|
|
|
start = I_FloatTime ();
|
|
InitTables();
|
|
|
|
// default filename is "q3asm"
|
|
strcpy( outputFilename, "q3asm" );
|
|
numAsmFiles = 0;
|
|
|
|
for ( i = 1 ; i < argc ; i++ ) {
|
|
if ( argv[i][0] != '-' ) {
|
|
break;
|
|
}
|
|
if ( !strcmp( argv[i], "-o" ) ) {
|
|
if ( i == argc - 1 ) {
|
|
Error( "-o must preceed a filename" );
|
|
}
|
|
strcpy( outputFilename, argv[ i+1 ] );
|
|
i++;
|
|
continue;
|
|
}
|
|
|
|
if ( !strcmp( argv[i], "-f" ) ) {
|
|
if ( i == argc - 1 ) {
|
|
Error( "-f must preceed a filename" );
|
|
}
|
|
ParseOptionFile( argv[ i+1 ] );
|
|
i++;
|
|
continue;
|
|
}
|
|
Error( "Unknown option: %s", argv[i] );
|
|
}
|
|
|
|
// the rest of the command line args are asm files
|
|
for ( ; i < argc ; i++ ) {
|
|
asmFileNames[ numAsmFiles ] = copystring( argv[ i ] );
|
|
numAsmFiles++;
|
|
}
|
|
|
|
Assemble();
|
|
|
|
end = I_FloatTime ();
|
|
printf ("%5.0f seconds elapsed\n", end-start);
|
|
|
|
return 0;
|
|
}
|
|
|