622 lines
14 KiB
C
Executable File
622 lines
14 KiB
C
Executable File
/* emit_ack.c - emit ACK assembly Author: Kees J. Bot
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* emit NCC assembly 27 Dec 1993
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*/
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#define nil 0
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <assert.h>
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#include "asmconv.h"
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#include "token.h"
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#include "asm86.h"
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#include "languages.h"
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typedef struct mnemonic { /* ACK as86 mnemonics translation table. */
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opcode_t opcode;
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char *name;
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} mnemonic_t;
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static mnemonic_t mnemtab[] = {
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{ AAA, "aaa" },
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{ AAD, "aad" },
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{ AAM, "aam" },
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{ AAS, "aas" },
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{ ADC, "adc%" },
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{ ADD, "add%" },
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{ AND, "and%" },
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{ ARPL, "arpl" },
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{ BOUND, "bound" },
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{ BSF, "bsf" },
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{ BSR, "bsr" },
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{ BSWAP, "bswap" },
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{ BT, "bt" },
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{ BTC, "btc" },
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{ BTR, "btr" },
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{ BTS, "bts" },
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{ CALL, "call" },
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{ CALLF, "callf" },
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{ CBW, "cbw" },
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{ CLC, "clc" },
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{ CLD, "cld" },
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{ CLI, "cli" },
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{ CLTS, "clts" },
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{ CMC, "cmc" },
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{ CMP, "cmp%" },
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{ CMPS, "cmps%" },
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{ CMPXCHG, "cmpxchg" },
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{ CWD, "cwd" },
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{ DAA, "daa" },
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{ DAS, "das" },
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{ DEC, "dec%" },
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{ DIV, "div%" },
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{ DOT_ALIGN, ".align" },
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{ DOT_ASCII, ".ascii" },
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{ DOT_ASCIZ, ".asciz" },
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{ DOT_ASSERT, ".assert" },
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{ DOT_BASE, ".base" },
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{ DOT_BSS, ".sect .bss" },
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{ DOT_COMM, ".comm" },
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{ DOT_DATA, ".sect .data" },
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{ DOT_DATA1, ".data1" },
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{ DOT_DATA2, ".data2" },
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{ DOT_DATA4, ".data4" },
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{ DOT_DEFINE, ".define" },
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{ DOT_END, ".sect .end" },
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{ DOT_EXTERN, ".extern" },
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{ DOT_FILE, ".file" },
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{ DOT_LCOMM, ".comm" },
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{ DOT_LINE, ".line" },
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{ DOT_LIST, ".list" },
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{ DOT_NOLIST, ".nolist" },
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{ DOT_ROM, ".sect .rom" },
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{ DOT_SPACE, ".space" },
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{ DOT_SYMB, ".symb" },
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{ DOT_TEXT, ".sect .text" },
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{ DOT_USE16, ".use16" },
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{ DOT_USE32, ".use32" },
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{ ENTER, "enter" },
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{ F2XM1, "f2xm1" },
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{ FABS, "fabs" },
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{ FADD, "fadd" },
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{ FADDD, "faddd" },
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{ FADDP, "faddp" },
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{ FADDS, "fadds" },
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{ FBLD, "fbld" },
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{ FBSTP, "fbstp" },
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{ FCHS, "fchs" },
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{ FCLEX, "fclex" },
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{ FCOMD, "fcomd" },
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{ FCOMPD, "fcompd" },
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{ FCOMPP, "fcompp" },
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{ FCOMPS, "fcomps" },
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{ FCOMS, "fcoms" },
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{ FCOS, "fcos" },
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{ FDECSTP, "fdecstp" },
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{ FDIVD, "fdivd" },
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{ FDIVP, "fdivp" },
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{ FDIVRD, "fdivrd" },
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{ FDIVRP, "fdivrp" },
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{ FDIVRS, "fdivrs" },
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{ FDIVS, "fdivs" },
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{ FFREE, "ffree" },
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{ FIADDL, "fiaddl" },
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{ FIADDS, "fiadds" },
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{ FICOM, "ficom" },
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{ FICOMP, "ficomp" },
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{ FIDIVL, "fidivl" },
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{ FIDIVRL, "fidivrl" },
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{ FIDIVRS, "fidivrs" },
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{ FIDIVS, "fidivs" },
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{ FILDL, "fildl" },
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{ FILDQ, "fildq" },
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{ FILDS, "filds" },
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{ FIMULL, "fimull" },
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{ FIMULS, "fimuls" },
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{ FINCSTP, "fincstp" },
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{ FINIT, "finit" },
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{ FISTL, "fistl" },
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{ FISTP, "fistp" },
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{ FISTS, "fists" },
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{ FISUBL, "fisubl" },
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{ FISUBRL, "fisubrl" },
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{ FISUBRS, "fisubrs" },
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{ FISUBS, "fisubs" },
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{ FLD1, "fld1" },
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{ FLDCW, "fldcw" },
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{ FLDD, "fldd" },
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{ FLDENV, "fldenv" },
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{ FLDL2E, "fldl2e" },
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{ FLDL2T, "fldl2t" },
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{ FLDLG2, "fldlg2" },
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{ FLDLN2, "fldln2" },
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{ FLDPI, "fldpi" },
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{ FLDS, "flds" },
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{ FLDX, "fldx" },
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{ FLDZ, "fldz" },
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{ FMULD, "fmuld" },
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{ FMULP, "fmulp" },
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{ FMULS, "fmuls" },
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{ FNOP, "fnop" },
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{ FPATAN, "fpatan" },
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{ FPREM, "fprem" },
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{ FPREM1, "fprem1" },
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{ FPTAN, "fptan" },
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{ FRNDINT, "frndint" },
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{ FRSTOR, "frstor" },
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{ FSAVE, "fsave" },
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{ FSCALE, "fscale" },
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{ FSIN, "fsin" },
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{ FSINCOS, "fsincos" },
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{ FSQRT, "fsqrt" },
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{ FSTCW, "fstcw" },
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{ FSTD, "fstd" },
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{ FSTENV, "fstenv" },
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{ FSTPD, "fstpd" },
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{ FSTPS, "fstps" },
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{ FSTPX, "fstpx" },
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{ FSTS, "fsts" },
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{ FSTSW, "fstsw" },
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{ FSUBD, "fsubd" },
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{ FSUBP, "fsubp" },
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{ FSUBPR, "fsubpr" },
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{ FSUBRD, "fsubrd" },
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{ FSUBRS, "fsubrs" },
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{ FSUBS, "fsubs" },
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{ FTST, "ftst" },
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{ FUCOM, "fucom" },
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{ FUCOMP, "fucomp" },
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{ FUCOMPP, "fucompp" },
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{ FXAM, "fxam" },
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{ FXCH, "fxch" },
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{ FXTRACT, "fxtract" },
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{ FYL2X, "fyl2x" },
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{ FYL2XP1, "fyl2xp1" },
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{ HLT, "hlt" },
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{ IDIV, "idiv%" },
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{ IMUL, "imul%" },
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{ IN, "in%" },
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{ INC, "inc%" },
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{ INS, "ins%" },
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{ INT, "int" },
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{ INTO, "into" },
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{ INVD, "invd" },
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{ INVLPG, "invlpg" },
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{ IRET, "iret" },
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{ IRETD, "iretd" },
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{ JA, "ja" },
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{ JAE, "jae" },
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{ JB, "jb" },
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{ JBE, "jbe" },
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{ JCXZ, "jcxz" },
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{ JE, "je" },
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{ JG, "jg" },
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{ JGE, "jge" },
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{ JL, "jl" },
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{ JLE, "jle" },
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{ JMP, "jmp" },
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{ JMPF, "jmpf" },
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{ JNE, "jne" },
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{ JNO, "jno" },
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{ JNP, "jnp" },
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{ JNS, "jns" },
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{ JO, "jo" },
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{ JP, "jp" },
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{ JS, "js" },
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{ LAHF, "lahf" },
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{ LAR, "lar" },
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{ LDS, "lds" },
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{ LEA, "lea" },
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{ LEAVE, "leave" },
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{ LES, "les" },
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{ LFS, "lfs" },
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{ LGDT, "lgdt" },
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{ LGS, "lgs" },
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{ LIDT, "lidt" },
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{ LLDT, "lldt" },
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{ LMSW, "lmsw" },
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{ LOCK, "lock" },
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{ LODS, "lods%" },
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{ LOOP, "loop" },
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{ LOOPE, "loope" },
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{ LOOPNE, "loopne" },
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{ LSL, "lsl" },
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{ LSS, "lss" },
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{ LTR, "ltr" },
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{ MOV, "mov%" },
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{ MOVS, "movs%" },
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{ MOVSX, "movsx" },
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{ MOVSXB, "movsxb" },
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{ MOVZX, "movzx" },
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{ MOVZXB, "movzxb" },
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{ MUL, "mul%" },
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{ NEG, "neg%" },
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{ NOP, "nop" },
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{ NOT, "not%" },
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{ OR, "or%" },
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{ OUT, "out%" },
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{ OUTS, "outs%" },
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{ POP, "pop" },
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{ POPA, "popa" },
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{ POPF, "popf" },
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{ PUSH, "push" },
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{ PUSHA, "pusha" },
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{ PUSHF, "pushf" },
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{ RCL, "rcl%" },
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{ RCR, "rcr%" },
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{ RET, "ret" },
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{ RETF, "retf" },
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{ ROL, "rol%" },
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{ ROR, "ror%" },
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{ SAHF, "sahf" },
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{ SAL, "sal%" },
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{ SAR, "sar%" },
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{ SBB, "sbb%" },
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{ SCAS, "scas%" },
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{ SETA, "seta" },
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{ SETAE, "setae" },
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{ SETB, "setb" },
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{ SETBE, "setbe" },
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{ SETE, "sete" },
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{ SETG, "setg" },
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{ SETGE, "setge" },
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{ SETL, "setl" },
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{ SETLE, "setle" },
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{ SETNE, "setne" },
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{ SETNO, "setno" },
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{ SETNP, "setnp" },
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{ SETNS, "setns" },
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{ SETO, "seto" },
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{ SETP, "setp" },
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{ SETS, "sets" },
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{ SGDT, "sgdt" },
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{ SHL, "shl%" },
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{ SHLD, "shld" },
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{ SHR, "shr%" },
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{ SHRD, "shrd" },
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{ SIDT, "sidt" },
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{ SLDT, "sldt" },
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{ SMSW, "smsw" },
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{ STC, "stc" },
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{ STD, "std" },
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{ STI, "sti" },
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{ STOS, "stos%" },
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{ STR, "str" },
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{ SUB, "sub%" },
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{ TEST, "test%" },
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{ VERR, "verr" },
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{ VERW, "verw" },
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{ WAIT, "wait" },
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{ WBINVD, "wbinvd" },
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{ XADD, "xadd" },
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{ XCHG, "xchg%" },
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{ XLAT, "xlat" },
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{ XOR, "xor%" },
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};
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#define farjmp(o) ((o) == JMPF || (o) == CALLF)
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static FILE *ef;
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static long eline= 1;
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static char *efile;
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static char *orig_efile;
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static char *opcode2name_tab[N_OPCODES];
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static enum dialect { ACK, NCC } dialect= ACK;
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static void ack_putchar(int c)
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/* LOOK, this programmer checks the return code of putc! What an idiot, noone
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* does that!
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*/
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{
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if (putc(c, ef) == EOF) fatal(orig_efile);
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}
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static void ack_printf(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (vfprintf(ef, fmt, ap) == EOF) fatal(orig_efile);
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va_end(ap);
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}
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void ack_emit_init(char *file, const char *banner)
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/* Prepare producing an ACK assembly file. */
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{
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mnemonic_t *mp;
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if (file == nil) {
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file= "stdout";
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ef= stdout;
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} else {
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if ((ef= fopen(file, "w")) == nil) fatal(file);
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}
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orig_efile= file;
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efile= file;
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ack_printf("! %s", banner);
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if (dialect == ACK) {
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/* Declare the four sections used under Minix. */
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ack_printf(
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"\n.sect .text; .sect .rom; .sect .data; .sect .bss\n.sect .text");
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}
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/* Initialize the opcode to mnemonic translation table. */
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for (mp= mnemtab; mp < arraylimit(mnemtab); mp++) {
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assert(opcode2name_tab[mp->opcode] == nil);
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opcode2name_tab[mp->opcode]= mp->name;
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}
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}
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#define opcode2name(op) (opcode2name_tab[op] + 0)
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static void ack_put_string(const char *s, size_t n)
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/* Emit a string with weird characters quoted. */
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{
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while (n > 0) {
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int c= *s;
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if (c < ' ' || c > 0177) {
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ack_printf("\\%03o", c & 0xFF);
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} else
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if (c == '"' || c == '\\') {
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ack_printf("\\%c", c);
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} else {
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ack_putchar(c);
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}
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s++;
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n--;
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}
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}
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static void ack_put_expression(asm86_t *a, expression_t *e, int deref)
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/* Send an expression, i.e. instruction operands, to the output file. Deref
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* is true when the rewrite for the ncc dialect may be made.
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*/
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{
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assert(e != nil);
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switch (e->operator) {
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case ',':
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if (dialect == NCC && farjmp(a->opcode)) {
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/* ACK jmpf seg:off -> NCC jmpf off,seg */
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ack_put_expression(a, e->right, deref);
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ack_printf(", ");
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ack_put_expression(a, e->left, deref);
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} else {
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ack_put_expression(a, e->left, deref);
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ack_printf(farjmp(a->opcode) ? ":" : ", ");
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ack_put_expression(a, e->right, deref);
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}
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break;
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case 'O':
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if (deref && a->optype == JUMP) ack_putchar('@');
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if (e->left != nil) ack_put_expression(a, e->left, 0);
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if (e->middle != nil) ack_put_expression(a, e->middle, 0);
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if (e->right != nil) ack_put_expression(a, e->right, 0);
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break;
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case '(':
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if (deref && a->optype == JUMP) ack_putchar('@');
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if (!deref) ack_putchar('(');
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ack_put_expression(a, e->middle, 0);
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if (!deref) ack_putchar(')');
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break;
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case 'B':
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ack_printf("(%s)", e->name);
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break;
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case '1':
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case '2':
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case '4':
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case '8':
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ack_printf((use16() && e->operator == '1')
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? "(%s)" : "(%s*%c)", e->name, e->operator);
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break;
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case '+':
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case '-':
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case '~':
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if (e->middle != nil) {
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if (deref && a->optype != JUMP) ack_putchar('#');
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ack_putchar(e->operator);
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ack_put_expression(a, e->middle, 0);
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break;
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}
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/*FALL THROUGH*/
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case '*':
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case '/':
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case '%':
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case '&':
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case '|':
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case '^':
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case S_LEFTSHIFT:
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case S_RIGHTSHIFT:
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if (deref && a->optype != JUMP) ack_putchar('#');
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ack_put_expression(a, e->left, 0);
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if (e->operator == S_LEFTSHIFT) {
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ack_printf("<<");
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} else
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if (e->operator == S_RIGHTSHIFT) {
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ack_printf(">>");
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} else {
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ack_putchar(e->operator);
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}
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ack_put_expression(a, e->right, 0);
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break;
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case '[':
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if (deref && a->optype != JUMP) ack_putchar('#');
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ack_putchar('[');
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ack_put_expression(a, e->middle, 0);
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ack_putchar(']');
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break;
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case 'W':
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if (deref && a->optype == JUMP && isregister(e->name))
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{
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ack_printf("(%s)", e->name);
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break;
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}
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if (deref && a->optype != JUMP && !isregister(e->name)) {
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ack_putchar('#');
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}
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ack_printf("%s", e->name);
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break;
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case 'S':
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ack_putchar('"');
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ack_put_string(e->name, e->len);
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ack_putchar('"');
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break;
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default:
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fprintf(stderr,
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"asmconv: internal error, unknown expression operator '%d'\n",
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e->operator);
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exit(EXIT_FAILURE);
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}
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}
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void ack_emit_instruction(asm86_t *a)
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/* Output one instruction and its operands. */
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{
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int same= 0;
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char *p;
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static int high_seg;
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int deref;
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if (a == nil) {
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/* Last call */
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ack_putchar('\n');
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return;
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}
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/* Make sure the line number of the line to be emitted is ok. */
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if ((a->file != efile && strcmp(a->file, efile) != 0)
|
|
|| a->line < eline || a->line > eline+10) {
|
|
ack_putchar('\n');
|
|
ack_printf("# %ld \"%s\"\n", a->line, a->file);
|
|
efile= a->file;
|
|
eline= a->line;
|
|
} else {
|
|
if (a->line == eline) {
|
|
ack_printf("; ");
|
|
same= 1;
|
|
}
|
|
while (eline < a->line) {
|
|
ack_putchar('\n');
|
|
eline++;
|
|
}
|
|
}
|
|
|
|
if (a->opcode == DOT_LABEL) {
|
|
assert(a->args->operator == ':');
|
|
ack_printf("%s:", a->args->name);
|
|
} else
|
|
if (a->opcode == DOT_EQU) {
|
|
assert(a->args->operator == '=');
|
|
ack_printf("\t%s = ", a->args->name);
|
|
ack_put_expression(a, a->args->middle, 0);
|
|
} else
|
|
if ((p= opcode2name(a->opcode)) != nil) {
|
|
char *sep= dialect == ACK ? "" : ";";
|
|
|
|
if (!is_pseudo(a->opcode) && !same) ack_putchar('\t');
|
|
|
|
switch (a->rep) {
|
|
case ONCE: break;
|
|
case REP: ack_printf("rep"); break;
|
|
case REPE: ack_printf("repe"); break;
|
|
case REPNE: ack_printf("repne"); break;
|
|
default: assert(0);
|
|
}
|
|
if (a->rep != ONCE) {
|
|
ack_printf(dialect == ACK ? " " : "; ");
|
|
}
|
|
switch (a->seg) {
|
|
case DEFSEG: break;
|
|
case CSEG: ack_printf("cseg"); break;
|
|
case DSEG: ack_printf("dseg"); break;
|
|
case ESEG: ack_printf("eseg"); break;
|
|
case FSEG: ack_printf("fseg"); break;
|
|
case GSEG: ack_printf("gseg"); break;
|
|
case SSEG: ack_printf("sseg"); break;
|
|
default: assert(0);
|
|
}
|
|
if (a->seg != DEFSEG) {
|
|
ack_printf(dialect == ACK ? " " : "; ");
|
|
}
|
|
if (a->oaz & OPZ) ack_printf(use16() ? "o32 " : "o16 ");
|
|
if (a->oaz & ADZ) ack_printf(use16() ? "a32 " : "a16 ");
|
|
|
|
if (a->opcode == CBW) {
|
|
p= !(a->oaz & OPZ) == use16() ? "cbw" : "cwde";
|
|
}
|
|
|
|
if (a->opcode == CWD) {
|
|
p= !(a->oaz & OPZ) == use16() ? "cwd" : "cdq";
|
|
}
|
|
|
|
if (a->opcode == DOT_COMM && a->args != nil
|
|
&& a->args->operator == ','
|
|
&& a->args->left->operator == 'W'
|
|
) {
|
|
ack_printf(".define\t%s; ", a->args->left->name);
|
|
}
|
|
while (*p != 0) {
|
|
if (*p == '%') {
|
|
if (a->optype == BYTE) ack_putchar('b');
|
|
} else {
|
|
ack_putchar(*p);
|
|
}
|
|
p++;
|
|
}
|
|
if (a->args != nil) {
|
|
ack_putchar('\t');
|
|
switch (a->opcode) {
|
|
case IN:
|
|
case OUT:
|
|
case INT:
|
|
deref= 0;
|
|
break;
|
|
default:
|
|
deref= (dialect == NCC && a->optype != PSEUDO);
|
|
}
|
|
ack_put_expression(a, a->args, deref);
|
|
}
|
|
if (a->opcode == DOT_USE16) set_use16();
|
|
if (a->opcode == DOT_USE32) set_use32();
|
|
} else {
|
|
fprintf(stderr,
|
|
"asmconv: internal error, unknown opcode '%d'\n",
|
|
a->opcode);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
/* A few ncc mnemonics are different. */
|
|
static mnemonic_t ncc_mnemtab[] = {
|
|
{ DOT_BSS, ".bss" },
|
|
{ DOT_DATA, ".data" },
|
|
{ DOT_END, ".end" },
|
|
{ DOT_ROM, ".rom" },
|
|
{ DOT_TEXT, ".text" },
|
|
};
|
|
|
|
void ncc_emit_init(char *file, const char *banner)
|
|
/* The assembly produced by the Minix ACK ANSI C compiler for the 8086 is
|
|
* different from the normal ACK assembly, and different from the old K&R
|
|
* assembler. This brings us endless joy. (It was supposed to make
|
|
* translation of the assembly used by the old K&R assembler easier by
|
|
* not deviating too much from that dialect.)
|
|
*/
|
|
{
|
|
mnemonic_t *mp;
|
|
|
|
dialect= NCC;
|
|
ack_emit_init(file, banner);
|
|
|
|
/* Replace a few mnemonics. */
|
|
for (mp= ncc_mnemtab; mp < arraylimit(ncc_mnemtab); mp++) {
|
|
opcode2name_tab[mp->opcode]= mp->name;
|
|
}
|
|
}
|
|
|
|
void ncc_emit_instruction(asm86_t *a)
|
|
{
|
|
ack_emit_instruction(a);
|
|
}
|