+++ /dev/null
-#!/usr/bin/perl
-#
-# Copyright (C) 1999 Jonathan St-André
-# Copyright (C) 1999 Hugo Villeneuve <hugo@hugovil.com>
-#
-# This file is released under the GPLv2
-
-open INST_DEF, ">instructions_8051.h" or die "Error creating <instructions_8051.h> : $!\n";
-open INST_IMP, ">instructions_8051.c" or die "Error creating <instructions_8051.c> : $!\n";
-open OPCODELST, "opcodes.lst" or die "Error opening <opcodes.lst> : $!\n";
-open DISASM_H, ">disasm.h" or die "Error creating <disasm.h> : $!\n";
-
-# Write GPL license
-# Argument 0 is file descriptor
-sub write_header
-{
- my $fd = $_[0];
-
- print $fd " *\n";
- print $fd " * Do not modify this file directly, as it was created by opcode2c.pl\n";
- print $fd " * Any modifications made directly to this file will be lost.\n";
- print $fd " *\n";
- print $fd " * Copyright (C) 1999 Jonathan St-André\n";
- print $fd " * Copyright (C) 1999 Hugo Villeneuve <hugo@hugovil.com>\n";
- print $fd " *\n";
- print $fd " * This file is released under the GPLv2\n";
- print $fd " */\n\n";
-}
-
-# Write C function source code line to INST_IMP file.
-# Prefix each line with a tab (indentation) and add newline character at the end.
-sub cfw
-{
- print INST_IMP "\t",$_[0],"\n";
-}
-
-# Header for instructions_8051.c
-print INST_IMP "/*\n";
-print INST_IMP " * instructions_8051.c\n";
-write_header(INST_IMP);
-print INST_IMP "/* Define only here, for not having extern scope on local variables. */\n";
-print INST_IMP "#define INSTRUCTIONS_8051_M 1\n\n\n";
-print INST_IMP "#include \"reg8051.h\"\n";
-print INST_IMP "#include \"cpu8051.h\"\n";
-print INST_IMP "#include \"memory.h\"\n";
-print INST_IMP "#include \"psw.h\"\n";
-print INST_IMP "#include \"operations.h\"\n";
-print INST_IMP "#include \"instructions_8051.h\"\n\n\n";
-
-# Header for disasm.h
-print DISASM_H "/*\n";
-print DISASM_H " * disasm.h\n";
-write_header(DISASM_H);
-print DISASM_H "#ifndef DISASM_H\n";
-print DISASM_H "#define DISASM_H 1\n\n";
-
-# Column indexes in opcodes.lst table
-use constant COL_OPCODE => 0;
-use constant COL_INSTR => 1;
-use constant COL_ARGS => 2;
-
-use constant COL_COUNT_NO_ARGS => 4;
-
-$nbinst=0;
-$nbaddr=0;
-$nbargs=0;
-$instnumb=0;
-
-# Read file describing each instruction/opcode
-
-# Discard first two lines, which are comments
-$ligne = <OPCODELST>;
-$ligne = <OPCODELST>;
-
-while($ligne=<OPCODELST>) {
- chop $ligne;
-
- if (length $ligne < 2) {
- next;
- }
-
- @wordlist = split ' ',$ligne;
- $nbword = @wordlist;
- $instruction = $wordlist[COL_INSTR];
-
- for ($i = (COL_INSTR + 1); $i < ($nbword - 2); $i++) {
- $instruction = "$instruction $wordlist[$i]";
- }
-
- $a_instruction[$instnumb] = $instruction;
- $a_bytes[$instnumb] = $wordlist[$nbword - 2];
- $a_cycles[$instnumb] = $wordlist[$nbword - 1];
- $a_opcodehex[$instnumb] = $wordlist[COL_OPCODE];
-
- $instfunction[$instnumb] = "CPU8051::OP_$wordlist[COL_OPCODE]";
-
- $instargs[$instnumb << 2] = $instargs[($instnumb << 2) + 1] =
- $instargs[($instnumb << 2) + 2] = $instargs[($instnumb << 2) + 3] = 0;
-
- if ($nbword > COL_COUNT_NO_ARGS) {
- @argslist = split /\,/,$wordlist[COL_ARGS];
- $argslistsize = @argslist;
- $instargs[$instnumb << 2] = $argslistsize;
- for ($i = 0; $i < $argslistsize; $i++) {
- if (not exists $argstypes{$argslist[$i]}) {
- $argstypes[$nbargs] = $argslist[$i];
- $argstypes{$argslist[$i]} = $nbargs++;
- }
- $instargs[($instnumb << 2) + $i + 1] = $argstypes{$argslist[$i]};
- }
- }
-
- if (not exists $insttext{$wordlist[COL_INSTR]}) {
- $insttext[$nbinst] = $wordlist[COL_INSTR];
- $insttext{$wordlist[COL_INSTR]} = $nbinst++;
- }
-
- $insttype[$instnumb] = $insttext{$wordlist[COL_INSTR]};
-
- if (not exists $addrmode{$wordlist[COL_ARGS]}) {
- $addrmode[$nbaddr] = $wordlist[COL_ARGS];
- $addrmode{$wordlist[COL_ARGS]} = $nbaddr++;
- }
-
- $nbbytes[$instnumb] = $wordlist[$nbword - 2];
-
- $instaddr[$instnumb] = $addrmode{$wordlist[COL_ARGS]};
-
- $instnumb++;
-}
-
-# ------------------------------------------------------------------------------
-print DISASM_H "/* Size(in bytes) of each instruction (offset in table is instruction opcode) */\n";
-
-$nbelement = @nbbytes;
-
-print DISASM_H "static int instr_size[$nbelement] = {";
-
-for ($i = 0; $i < $nbelement; $i++) {
- if ($i % 16 == 0) {
- print DISASM_H "\n\t";
- } else {
- print DISASM_H " ";
- }
- print DISASM_H "$nbbytes[$i],";
-}
-print DISASM_H "\n";
-print DISASM_H "};\n";
-print DISASM_H "\n";
-
-# ------------------------------------------------------------------------------
-print DISASM_H "/*\n";
-print DISASM_H " * For all 256 opcodes, the value in this table gives the instruction type\n";
-print DISASM_H " * ex.: MOV, INC, CLR, CPL,...\n";
-print DISASM_H " * To know what is the instruction type, use\n";
-print DISASM_H " * the number as an offset in instr_type_str[]\n";
-print DISASM_H " */\n";
-
-$nbelement = @insttype;
-
-print DISASM_H "static int instr_type_id[$nbelement] = {";
-
-for ($i = 0; $i < $nbelement; $i++) {
- if ($i % 16 == 0) {
- print DISASM_H "\n\t";
- } else {
- print DISASM_H " ";
- }
- print DISASM_H "$insttype[$i],";
-}
-print DISASM_H "\n";
-print DISASM_H "};\n";
-print DISASM_H "\n";
-
-# ------------------------------------------------------------------------------
-print DISASM_H "/* List of instructions types referenced by instr_type_id[] */\n";
-$nbelement = @insttext;
-$elementnb = 0;
-print DISASM_H "static char *instr_type_str[$nbelement] = {\n";
-
-foreach $instruc (@insttext) {
- print DISASM_H "\t\"$instruc\"";
- if ($elementnb++ < ($nbelement - 1)) {
- print DISASM_H ",";
- }
- print DISASM_H "\n";
-}
-
-print DISASM_H "};\n";
-print DISASM_H "\n";
-
-# ------------------------------------------------------------------------------
-print DISASM_H "/*\n";
-print DISASM_H " * Table describing all arguments types of an instruction\n";
-print DISASM_H " * The table is indexed instr_arg_type_id[ opcode * 4]\n";
-print DISASM_H " * instr_arg_type_id[opcode*4 + 1] gives number of instruction arguments\n";
-print DISASM_H " * instr_arg_type_id[opcode*4 + i] for i=1,2 and 3 gives type of each argument\n";
-print DISASM_H " * for most instructions, the 3rd argument isn't used\n";
-print DISASM_H " * the argument type is referecing to instr_arg_type_str[]\n";
-print DISASM_H " */\n";
-
-$nbelement = @instargs;
-
-print DISASM_H "static int instr_arg_type_id[$nbelement] = {";
-
-for ($i = 0; $i < $nbelement; $i++) {
- if ($i % 16 == 0) {
- print DISASM_H "\n\t";
- } else {
- print DISASM_H " ";
- }
-
- print DISASM_H "$instargs[$i],";
-}
-print DISASM_H "\n";
-print DISASM_H "};\n";
-print DISASM_H "\n";
-
-# ------------------------------------------------------------------------------
-print DISASM_H "/*\n";
-print DISASM_H " * List all types of arguments available to instructions\n";
-print DISASM_H " * Referenced by instr_arg_type_id[]\n";
-print DISASM_H " */\n";
-
-$nbelement = @argstypes;
-$elementnb = 0;
-
-print DISASM_H "static char *instr_arg_type_str[$nbelement] = {\n";
-
-foreach $args (@argstypes) {
- print DISASM_H "\t\"$args\"";
- if ($elementnb++ < $nbelement-1) {
- print DISASM_H ",";
- }
- print DISASM_H "\n";
-}
-print DISASM_H "};\n";
-print DISASM_H "\n";
-
-# ------------------------------------------------------------------------------
-for ($i = 0 ; $i < 256; $i++) {
- print INST_IMP "/*","*"x76,"\n";
- print INST_IMP " * Instruction \"$a_instruction[$i]\" takes $a_cycles[$i] cycle(s) and $a_bytes[$i] byte(s).\n";
- print INST_IMP " ","*"x76,"/\n";
- print INST_IMP "int\n";
- print INST_IMP "cpu8051_OP_$a_opcodehex[$i](void)\n";
- print INST_IMP "{\n";
-
- if( $i == 0x85 ) {
- # Cas particulier pour MOV direct,direct -> src et dest sont inverses dans la memoire
- print INST_IMP " unsigned char srcaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );\n";
- print INST_IMP " unsigned char source = mem_read_direct( srcaddr );\n";
- print INST_IMP " unsigned char destaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );\n";
- print INST_IMP " unsigned char destination = mem_read_direct( destaddr );\n";
- print INST_IMP " destination = source;\n";
- print INST_IMP " mem_write_direct( destaddr, destination );\n";
- }
- else {
- if ($instargs[$i*4] > 0) {
- $op_destination=$instargs[$i*4+1];
- if ($op_destination == 0) { # addr11
- cfw("unsigned int addr11 = ( ( mem_read8( PGM_MEM_ID, cpu8051.pc - 1 ) << 3 ) & 0xF00 ) + mem_read8( PGM_MEM_ID, cpu8051.pc );");
- cfw("cpu8051.pc++;");
- }
- if ($op_destination == 1) { # addr16
- cfw("uint16_t addr16 = pgm_read_addr16(cpu8051.pc);");
- cfw("cpu8051.pc += 2;");
- }
- if ($op_destination == 2) { # A
- cfw("unsigned char destination = mem_read_direct( _ACC_ );");
- }
- if ($op_destination == 3) { # direct
- cfw("unsigned char destaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
- cfw("unsigned char destination = mem_read_direct( destaddr );");
- }
- if ($op_destination == 4) { # @R0
- cfw("unsigned char destination = mem_read_indirect ( mem_read_direct( BANKPSW + _R0_ ) );");
- }
- if ($op_destination == 5) { # @R1
- cfw("unsigned char destination = mem_read_indirect ( mem_read_direct( BANKPSW + _R1_ ) );");
- }
- if ($op_destination == 6) { # R0
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R0_ );");
- }
- if ($op_destination == 7) { # R1
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R1_ );");
- }
- if ($op_destination == 8) { # R2
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R2_ );");
- }
- if ($op_destination == 9) { # R3
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R3_ );");
- }
- if ($op_destination == 10) { # R4
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R4_ );");
- }
- if ($op_destination == 11) { # R5
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R5_ );");
- }
- if ($op_destination == 12) { # R6
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R6_ );");
- }
- if ($op_destination == 13) { # R7
- cfw("unsigned char destination = mem_read_direct( BANKPSW + _R7_ );");
- }
- if ($op_destination == 14) { # bitaddr
- cfw("unsigned char destination, dstbitaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
- cfw("destination = mem_read_bit( dstbitaddr );");
- }
- if ($op_destination == 15) { # reladdr
- cfw("cpu8051.pc++;");
- cfw("unsigned int destination = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc - 1)) + cpu8051.pc;");
- }
- if ($op_destination == 16) { # #data
- cfw("unsigned char destination = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
- }
- if ($op_destination == 17) { # C
- cfw("unsigned char destination = psw_read_cy();");
- }
- if ($op_destination == 18) { # @A+DPTR
- cfw("unsigned int destination = mem_read_direct( _ACC_ ) + mem_sfr_read_dptr();");
- }
- if ($op_destination == 20) { # AB
- cfw("unsigned char destination = mem_read_direct( _ACC_ );");
- cfw("unsigned char source = mem_read_direct( _B_ );");
- }
- if ($op_destination == 21) { # DPTR
- cfw("unsigned int destination = mem_sfr_read_dptr();");
- }
- if ($op_destination == 23) { # /bitaddr
- cfw("unsigned char destination, dstbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- cfw("destination = ( mem_read_bit( dstbitaddr ) ^ 1 );");
- }
- if ($op_destination == 24) { # @DPTR
- cfw("unsigned char destination = mem_read_indirect(mem_sfr_read_dptr());");
- }
- }
-
- if ($instargs[$i*4] > 1) {
- $op_source=$instargs[$i*4+2];
- if ($op_source == 0) { # addr11
- cfw("unsigned int addr11 = ( ( mem_read8( PGM_MEM_ID, cpu8051.pc - 1 ) << 3 ) & 0xF00 ) + mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- }
- if ($op_source == 1) { # addr16
- cfw("uint16_t addr16 = pgm_read_addr16(cpu8051.pc);");
- cfw("cpu8051.pc += 2;");
- }
- if ($op_source == 2) { # A
- cfw("unsigned char source = mem_read_direct( _ACC_ );");
- }
- if ($op_source == 3) { # direct
- cfw("unsigned char srcaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- cfw("unsigned char source = mem_read_direct( srcaddr );");
- }
- if ($op_source == 4) { # @R0
- cfw("unsigned char source = mem_read_indirect ( mem_read_direct( BANKPSW + _R0_ ) );");
- }
- if ($op_source == 5) { # @R1
- cfw("unsigned char source = mem_read_indirect ( mem_read_direct( BANKPSW + _R1_ ) );");
- }
- if ($op_source == 6) { # R0
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R0_ );");
- }
- if ($op_source == 7) { # R1
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R1_ );");
- }
- if ($op_source == 8) { # R2
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R2_ );");
- }
- if ($op_source == 9) { # R3
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R3_ );");
- }
- if ($op_source == 10) { # R4
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R4_ );");
- }
- if ($op_source == 11) { # R5
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R5_ );");
- }
- if ($op_source == 12) { # R6
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R6_ );");
- }
- if ($op_source == 13) { # R7
- cfw("unsigned char source = mem_read_direct( BANKPSW + _R7_ );");
- }
-
- if ($op_source == 14) { # bitaddr
- cfw("unsigned char source, srcbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- cfw("source = mem_read_bit( srcbitaddr );");
- }
- if ($op_source == 15) { # reladdr
- cfw("(cpu8051.pc)++;");
- cfw("unsigned int source = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc - 1)) + cpu8051.pc;");
- }
- if ($op_source == 16) { # #data
- cfw("unsigned char source = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- }
- if ($op_source == 17) { # C
- cfw("unsigned char source = psw_read_cy();");
- }
- if ($op_source == 18) { # @A+DPTR
- cfw("unsigned char source = mem_read8( PGM_MEM_ID, mem_read_direct( _ACC_ ) + mem_sfr_read_dptr());");
- }
- if ($op_source == 19) { # @A+PC
- cfw("unsigned char source = mem_read8( PGM_MEM_ID, mem_read_direct( _ACC_ ) + ( ++cpu8051.pc ) );");
- }
- if ($op_source == 21) { # DPTR
- cfw("unsigned int source = mem_sfr_read_dptr();");
- }
- if ($op_source == 22) { # #data16
- cfw("uint16_t source = pgm_read_addr16(cpu8051.pc);");
- cfw("cpu8051.pc += 2;");
- }
- if ($op_source == 23) { # /bitaddr
- cfw("unsigned char source, srcbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
- cfw("source = ( mem_read_bit( srcbitaddr ) ^ 1 );");
- }
- if ($op_source == 24) { # @DPTR
- cfw("unsigned char source = mem_read_indirect(mem_sfr_read_dptr());");
- }
- }
-
-##############################################################################
- $modifysrc=0;
-
- # RR
- if ($insttype[$i] == 3) {
- cfw("destination = ( destination >> 1 ) | ( destination << 7 );");
- }
-
- # INC
- if ($insttype[$i] == 4) {
- cfw("destination++;");
- }
-
- # JBC
- if ($insttype[$i] == 5) {
- cfw("if ( destination == 1 ) { cpu8051.pc = source; destination = 0; }");
- }
-
- # ACALL
- if ($insttype[$i] == 6) {
- cfw("stack_push16(cpu8051.pc);");
- }
-
- # LCALL
- if ($insttype[$i] == 7) {
- cfw("stack_push16(cpu8051.pc);");
- }
-
- # RRC
- if ($insttype[$i] == 8) {
- cfw("unsigned char new_cy = destination & 0x01;");
- cfw("destination = ( destination >> 1 ) | (psw_read_cy() << 7);");
- cfw("psw_write_cy(new_cy);");
- }
-
- # DEC
- if ($insttype[$i] == 9) {
- cfw("destination--;");
- }
-
- # JB
- if ($insttype[$i] == 10) {
- cfw("if ( destination == 1 ) { cpu8051.pc = source; }");
- }
-
- # RET
- if ($insttype[$i] == 11) {
- cfw("cpu8051.pc = stack_pop16();");
- }
-
- # RL
- if ($insttype[$i] == 12) {
- cfw("destination = ( destination << 1 ) | ( destination >> 7 );");
- }
-
- # ADD
- if ($insttype[$i] == 13) {
- cfw("destination = addition(destination, source, 0);");
- }
-
- # JNB
- if ($insttype[$i] == 14) {
- cfw("if ( destination == 0 ) { cpu8051.pc = source; }");
- }
-
- # RETI
- if ($insttype[$i] == 15) {
- cfw("cpu8051.active_priority = -1;");
- cfw("cpu8051.pc = stack_pop16();");
- }
-
- # RLC
- if ($insttype[$i] == 16) {
- cfw("unsigned char new_cy = destination & 0x80;");
- cfw("destination = ( destination << 1 ) | psw_read_cy();");
- cfw("psw_write_cy(new_cy);");
- }
-
- # ADDC
- # ADD and ADDC function identically except that ADDC adds the value of
- # operand as well as the value of the Carry flag whereas ADD does not
- # add the Carry flag to the result.
- if ($insttype[$i] == 17) {
- cfw("unsigned char carryflag = psw_read_cy();");
- cfw("destination = addition(destination, source, carryflag);");
- }
-
- # JC
- if ($insttype[$i] == 18) {
- cfw("if (psw_read_cy()) { cpu8051.pc = destination; }");
- }
-
- # ORL
- if ($insttype[$i] == 19) {
- cfw("destination |= source;");
- }
-
- # JNC
- if ($insttype[$i] == 20) {
- cfw("if (psw_read_cy() == 0) { cpu8051.pc = destination; }");
- }
-
- # ANL
- if ($insttype[$i] == 21) {
- cfw("destination &= source;");
- }
-
- # JZ
- if ($insttype[$i] == 22) {
- cfw("if ( mem_read_direct( _ACC_ ) == 0 ) { cpu8051.pc = destination; }");
- }
-
- # XRL
- if ($insttype[$i] == 23) {
- cfw("destination ^= source;");
- }
-
- # JNZ
- if ($insttype[$i] == 24) {
- cfw("if ( mem_read_direct( _ACC_ ) != 0 ) { cpu8051.pc = destination; }");
- }
-
- # JMP
- if ($insttype[$i] == 25) {
- cfw("cpu8051.pc = destination;");
- }
-
- # MOV
- if ($insttype[$i] == 26) {
- cfw("destination = source;");
- }
-
- # SJMP
- if ($insttype[$i] == 27) {
- cfw("cpu8051.pc = destination;");
- }
-
- # MOVC
- if ($insttype[$i] == 28) {
- cfw("destination = source;");
- }
-
- # DIV
- if ($insttype[$i] == 29) {
- # A = destination
- # B = source
- cfw("psw_clr_cy();");
- # If B is zero, the OV flag will be set indicating a
- # division-by-zero error
- cfw("if (source != 0) {");
- cfw(" mem_write_direct(_ACC_, destination/source);");
- cfw(" mem_write_direct( _B_, destination%source);");
- cfw(" psw_clr_ov();");
- cfw("} else {");
- cfw(" psw_set_ov();");
- cfw("}");
- }
-
- # SUBB
- if ($insttype[$i] == 30) {
- cfw("unsigned char carryflag = psw_read_cy();");
- cfw("psw_clr_cy();");
- cfw("psw_clr_ac();");
- cfw("psw_clr_ov();");
- cfw("if ( destination < ( source + carryflag ) ) {");
- cfw(" psw_set_cy();");
- cfw(" if ((destination & 0x7F) > ((source + carryflag) & 0x7F)) psw_set_ov();");
- cfw("} else if ((destination & 0x7F) < ((source + carryflag) & 0x7F)) psw_set_ov();");
- cfw("if ((destination & 0x0F) < ((source + carryflag) & 0x0F)) psw_set_ac();");
- cfw("destination -= source + carryflag;");
- }
-
- # MUL
- if ($insttype[$i] == 31) {
- # A = destination
- # B = source
- cfw("psw_clr_cy();");
- cfw("mem_write_direct(_ACC_, destination * source);");
- cfw("mem_write_direct(_B_, (destination * source) / 0x100);");
- cfw("if (mem_read_direct(_B_) > 0)");
- cfw(" psw_set_ov();");
- cfw("else");
- cfw(" psw_clr_ov();");
- }
-
- # CPL
- if ($insttype[$i] == 33) {
- if ($instargs[$i*4+1] == 2) { cfw("destination ^= 0xFF;"); }
- else { cfw("destination ^= 0x01;"); }
- }
-
- # CJNE
- if ($insttype[$i] == 34) {
- cfw("unsigned int reladdr = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc)) + (cpu8051.pc + 1);");
- cfw("psw_clr_cy();");
- cfw("if ( destination < source ) psw_set_cy();");
- cfw("if ( destination != source ) cpu8051.pc = reladdr; else cpu8051.pc++;");
- }
-
- # PUSH
- if ($insttype[$i] == 35) {
- cfw("stack_push8(destination);");
- }
-
- # CLR
- if ($insttype[$i] == 36) {
- cfw("destination = 0;");
- }
-
- # SWAP
- if ($insttype[$i] == 37) {
- cfw("destination = ( destination << 4 ) + ( destination >> 4 );");
- }
-
- # XCH
- if ($insttype[$i] == 38) {
- cfw("unsigned char tmpval = destination;");
- cfw("destination = source; source = tmpval;");
- $modifysrc=1;
- }
-
- # POP
- if ($insttype[$i] == 39) {
- cfw("destination = stack_pop8();");
- }
-
- # SETB
- if ($insttype[$i] == 40) {
- cfw("destination = 1;");
- }
-
- # DA
- if ($insttype[$i] == 41) {
- cfw("if (((destination & 0x0F) > 9) || psw_read_ac()) {");
- cfw(" if ( ( destination + 6 ) > 0xFF) psw_set_cy();");
- cfw(" destination += 6;");
- cfw("}");
- cfw("if ( psw_read_cy() || ( ( destination & 0xF0 ) > 0x90 ) ) {");
- cfw(" if ( ( destination + 0x60 ) > 0xFF ) psw_set_cy();");
- cfw(" destination += 0x60;");
- cfw("}");
- }
-
- # DJNZ
- if ($insttype[$i] == 42) {
- cfw("destination--;");
- cfw("if ( destination != 0 ) cpu8051.pc = source;");
- }
-
- # XCHD
- if ($insttype[$i] == 43) {
- cfw("unsigned char tmpval = ( destination & 0x0F );");
- cfw("destination = ( destination & 0xF0 ) + ( source & 0x0F );");
- cfw("source = ( source & 0xF0 ) + tmpval;");
- $modifysrc=1;
- }
-
- # MOVX
- if ($insttype[$i] == 44) {
- cfw("destination = source;");
- }
-
-
-
-##############################################################################
-
-
- if ($instargs[$i*4] > 0) {
- $op_destination=$instargs[$i*4+1];
- if ($op_destination == 0) { # addr11
- cfw("cpu8051.pc = ( cpu8051.pc & 0xF800 ) | addr11;");
- }
- if ($op_destination == 1) { # addr16
- cfw("cpu8051.pc = addr16;");
- }
- if ($op_destination == 2) { # A
- cfw("mem_write_direct( _ACC_, destination );");
- }
- if ($op_destination == 3) { # direct
- cfw("mem_write_direct( destaddr, destination );");
- }
- if ($op_destination == 4) { # @R0
- cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R0_ ), destination );");
- }
- if ($op_destination == 5) { # @R1
- cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R1_ ), destination );");
- }
- if ($op_destination == 6) { # R0
- cfw("mem_write_direct( BANKPSW + _R0_, destination );");
- }
- if ($op_destination == 7) { # R1
- cfw("mem_write_direct( BANKPSW + _R1_, destination );");
- }
- if ($op_destination == 8) { # R2
- cfw("mem_write_direct( BANKPSW + _R2_, destination );");
- }
- if ($op_destination == 9) { # R3
- cfw("mem_write_direct( BANKPSW + _R3_, destination );");
- }
- if ($op_destination == 10) { # R4
- cfw("mem_write_direct( BANKPSW + _R4_, destination );");
- }
- if ($op_destination == 11) { # R5
- cfw("mem_write_direct( BANKPSW + _R5_, destination );");
- }
- if ($op_destination == 12) { # R6
- cfw("mem_write_direct( BANKPSW + _R6_, destination );");
- }
- if ($op_destination == 13) { # R7
- cfw("mem_write_direct( BANKPSW + _R7_, destination );");
- }
-
- if ($op_destination == 14) { # bitaddr
- cfw("mem_write_bit( dstbitaddr, destination );");
- }
- if ($op_destination == 17) { # C
- cfw("psw_write_cy(destination);");
- }
- if ($op_destination == 21) { # DPTR
- cfw("mem_sfr_write_dptr(destination);");
- }
- if ($op_destination == 23) { # /bitaddr
- cfw("mem_write_bit( dstbitaddr, destination );");
- }
- if ($op_destination == 24) { # @DPTR
- cfw("mem_write_indirect(mem_sfr_read_dptr(), destination);");
- }
- }
-
- if ($modifysrc == 1) {
- if ($instargs[$i*4] > 1) {
- $op_source=$instargs[$i*4+2];
- if ($op_source == 0) { # addr11
- cfw("cpu8051.pc = ( cpu8051.pc & 0xF800 ) | addr11;");
- }
- if ($op_source == 1) { # addr16
- cfw("cpu8051.pc = addr16;");
- }
- if ($op_source == 2) { # A
- cfw("mem_write_direct( _ACC_, source );");
- }
- if ($op_source == 3) { # direct
- cfw("mem_write_direct( srcaddr, source );");
- }
- if ($op_source == 4) { # @R0
- cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R0_ ), source );");
- }
- if ($op_source == 5) { # @R1
- cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R1_ ), source );");
- }
- if ($op_source == 6) { # R0
- cfw("mem_write_direct( BANKPSW + _R0_, source );");
- }
- if ($op_source == 7) { # R1
- cfw("mem_write_direct( BANKPSW + _R1_, source );");
- }
- if ($op_source == 8) { # R2
- cfw("mem_write_direct( BANKPSW + _R2_, source );");
- }
- if ($op_source == 9) { # R3
- cfw("mem_write_direct( BANKPSW + _R3_, source );");
- }
- if ($op_source == 10) { # R4
- cfw("mem_write_direct( BANKPSW + _R4_, source );");
- }
- if ($op_source == 11) { # R5
- cfw("mem_write_direct( BANKPSW + _R5_, source );");
- }
- if ($op_source == 12) { # R6
- cfw("mem_write_direct( BANKPSW + _R6_, source );");
- }
- if ($op_source == 13) { # R7
- cfw("mem_write_direct( BANKPSW + _R7_, source );");
- }
- if ($op_source == 14) { # bitaddr
- cfw("mem_write_bit( srcbitaddr, source );");
- }
- if ($op_source == 17) { # C
- cfw("psw_write_cy(source);");
- }
- if ($op_source == 21) { # DPTR
- cfw("mem_sfr_write_dptr(source);");
- }
- if ($op_source == 23) { # /bitaddr
- cfw("mem_write_bit( srcbitaddr, source );");
- }
- if ($op_source == 24) { # @DPTR
- cfw("mem_write_indirect(mem_sfr_read_dptr(), source);");
- }
- }
- }
- }
- cfw("return $a_cycles[$i];");
- print INST_IMP "}\n";
- print INST_IMP "\n";
-}
-# ------------------------------------------------------------------------------
-
-
-# Header for instructions_8051.h
-print INST_DEF "/*\n";
-print INST_DEF " * instructions_8051.h\n";
-write_header(INST_DEF);
-print INST_DEF "#ifndef INSTRUCTIONS_8051_H\n";
-print INST_DEF "#define INSTRUCTIONS_8051_H 1\n\n\n";
-print INST_DEF "#define BANKPSW (mem_read_direct(_PSW_) & 0x18)\n\n";
-print INST_DEF "typedef int (*OPCODE_FP)(void);\n\n\n";
-for( $i=0; $i<256; $i++ ) {
- print INST_DEF "int\n";
- print INST_DEF "cpu8051_OP_$a_opcodehex[$i](void);\n\n";
-}
-print INST_DEF "\n";
-print INST_DEF "/* Exported variables. */\n";
-print INST_DEF "#ifdef INSTRUCTIONS_8051_M\n";
-print INST_DEF "OPCODE_FP opcode_table[256] = {\n";
-
-for ($i = 0; $i < 256; $i++) {
- $ifunc = substr($instfunction[$i], 9);
-
- print INST_DEF "\tcpu8051_$ifunc,\n";
-}
-print INST_DEF "};\n";
-print INST_DEF "#else\n";
-print INST_DEF "OPCODE_FP opcode_table[256];\n";
-print INST_DEF "#endif\n\n\n";
-
-print INST_DEF "#endif /* INSTRUCTIONS_8051_H */\n";
-
-print DISASM_H "#endif /* DISASM_H */\n";
-
-close DISASM_H;
-close OPCODELST;
-close INST_DEF;
-close INST_IMP;
--- /dev/null
+#!/usr/bin/perl
+#
+# Copyright (C) 1999 Jonathan St-André
+# Copyright (C) 1999 Hugo Villeneuve <hugo@hugovil.com>
+#
+# This file is released under the GPLv2
+
+open INST_DEF, ">instructions_8051.h" or die "Error creating <instructions_8051.h> : $!\n";
+open INST_IMP, ">instructions_8051.c" or die "Error creating <instructions_8051.c> : $!\n";
+open OPCODELST, "opcodes.lst" or die "Error opening <opcodes.lst> : $!\n";
+open OPCODES_DEF, ">opcodes.h" or die "Error creating <opcodes.h> : $!\n";
+open OPCODES_IMP, ">opcodes.c" or die "Error creating <opcodes.c> : $!\n";
+
+# Write GPL license
+# Argument 0 is file descriptor
+sub write_header
+{
+ my $fd = $_[0];
+
+ print $fd " *\n";
+ print $fd " * Do not modify this file directly, as it was created by opcodes2c.pl\n";
+ print $fd " * Any modifications made directly to this file will be lost.\n";
+ print $fd " *\n";
+ print $fd " * Copyright (C) 1999 Jonathan St-André\n";
+ print $fd " * Copyright (C) 1999 Hugo Villeneuve <hugo@hugovil.com>\n";
+ print $fd " *\n";
+ print $fd " * This file is released under the GPLv2\n";
+ print $fd " */\n\n";
+}
+
+# Write C function source code line to INST_IMP file.
+# Prefix each line with a tab (indentation) and add newline character at the end.
+sub cfw
+{
+ print INST_IMP "\t",$_[0],"\n";
+}
+
+# Header for instructions_8051.c
+print INST_IMP "/*\n";
+print INST_IMP " * instructions_8051.c\n";
+write_header(INST_IMP);
+print INST_IMP "/* Define only here, for not having extern scope on local variables. */\n";
+print INST_IMP "#define INSTRUCTIONS_8051_M 1\n\n\n";
+print INST_IMP "#include \"reg8051.h\"\n";
+print INST_IMP "#include \"cpu8051.h\"\n";
+print INST_IMP "#include \"memory.h\"\n";
+print INST_IMP "#include \"psw.h\"\n";
+print INST_IMP "#include \"operations.h\"\n";
+print INST_IMP "#include \"instructions_8051.h\"\n\n\n";
+
+# Header for opcodes.h
+print OPCODES_DEF "/*\n";
+print OPCODES_DEF " * opcodes.h\n";
+write_header(OPCODES_DEF);
+print OPCODES_DEF "#ifndef OPCODES_H\n";
+print OPCODES_DEF "#define OPCODES_H 1\n\n";
+
+print OPCODES_DEF "int\n";
+print OPCODES_DEF "opcodes_get_instr_size(uint8_t opcode);\n";
+print OPCODES_DEF "char *\n";
+print OPCODES_DEF "opcodes_get_instr_type_str(uint8_t opcode);\n";
+print OPCODES_DEF "int\n";
+print OPCODES_DEF "opcodes_get_instr_arg_type_id(unsigned int offset);\n";
+print OPCODES_DEF "char *\n";
+print OPCODES_DEF "opcodes_get_instr_arg_type_str(unsigned int offset);\n";
+
+# opcodes.c
+print OPCODES_IMP "/*\n";
+print OPCODES_IMP " * opcodes.c\n";
+write_header(OPCODES_IMP);
+print OPCODES_IMP "#include <stdint.h>\n\n";
+
+# Column indexes in opcodes.lst table
+use constant COL_OPCODE => 0;
+use constant COL_INSTR => 1;
+use constant COL_ARGS => 2;
+
+use constant COL_COUNT_NO_ARGS => 4;
+
+$nbinst=0;
+$nbaddr=0;
+$nbargs=0;
+$instnumb=0;
+
+# Read file describing each instruction/opcode
+
+# Discard first two lines, which are comments
+$ligne = <OPCODELST>;
+$ligne = <OPCODELST>;
+
+while($ligne=<OPCODELST>) {
+ chop $ligne;
+
+ if (length $ligne < 2) {
+ next;
+ }
+
+ @wordlist = split ' ',$ligne;
+ $nbword = @wordlist;
+ $instruction = $wordlist[COL_INSTR];
+
+ for ($i = (COL_INSTR + 1); $i < ($nbword - 2); $i++) {
+ $instruction = "$instruction $wordlist[$i]";
+ }
+
+ $a_instruction[$instnumb] = $instruction;
+ $a_bytes[$instnumb] = $wordlist[$nbword - 2];
+ $a_cycles[$instnumb] = $wordlist[$nbword - 1];
+ $a_opcodehex[$instnumb] = $wordlist[COL_OPCODE];
+
+ $instfunction[$instnumb] = "CPU8051::OP_$wordlist[COL_OPCODE]";
+
+ $instargs[$instnumb << 2] = $instargs[($instnumb << 2) + 1] =
+ $instargs[($instnumb << 2) + 2] = $instargs[($instnumb << 2) + 3] = 0;
+
+ if ($nbword > COL_COUNT_NO_ARGS) {
+ @argslist = split /\,/,$wordlist[COL_ARGS];
+ $argslistsize = @argslist;
+ $instargs[$instnumb << 2] = $argslistsize;
+ for ($i = 0; $i < $argslistsize; $i++) {
+ if (not exists $argstypes{$argslist[$i]}) {
+ $argstypes[$nbargs] = $argslist[$i];
+ $argstypes{$argslist[$i]} = $nbargs++;
+ }
+ $instargs[($instnumb << 2) + $i + 1] = $argstypes{$argslist[$i]};
+ }
+ }
+
+ if (not exists $insttext{$wordlist[COL_INSTR]}) {
+ $insttext[$nbinst] = $wordlist[COL_INSTR];
+ $insttext{$wordlist[COL_INSTR]} = $nbinst++;
+ }
+
+ $insttype[$instnumb] = $insttext{$wordlist[COL_INSTR]};
+
+ if (not exists $addrmode{$wordlist[COL_ARGS]}) {
+ $addrmode[$nbaddr] = $wordlist[COL_ARGS];
+ $addrmode{$wordlist[COL_ARGS]} = $nbaddr++;
+ }
+
+ $nbbytes[$instnumb] = $wordlist[$nbword - 2];
+
+ $instaddr[$instnumb] = $addrmode{$wordlist[COL_ARGS]};
+
+ $instnumb++;
+}
+
+# ------------------------------------------------------------------------------
+print OPCODES_IMP "/* Size(in bytes) of each instruction (offset in table is instruction opcode) */\n";
+
+$nbelement = @nbbytes;
+
+print OPCODES_IMP "static int instr_size[$nbelement] = {";
+
+for ($i = 0; $i < $nbelement; $i++) {
+ if ($i % 16 == 0) {
+ print OPCODES_IMP "\n\t";
+ } else {
+ print OPCODES_IMP " ";
+ }
+ print OPCODES_IMP "$nbbytes[$i],";
+}
+print OPCODES_IMP "\n";
+print OPCODES_IMP "};\n";
+print OPCODES_IMP "\n";
+
+# ------------------------------------------------------------------------------
+print OPCODES_IMP "/*\n";
+print OPCODES_IMP " * For all 256 opcodes, the value in this table gives the instruction type\n";
+print OPCODES_IMP " * ex.: MOV, INC, CLR, CPL,...\n";
+print OPCODES_IMP " * To know what is the instruction type, use\n";
+print OPCODES_IMP " * the number as an offset in instr_type_str[]\n";
+print OPCODES_IMP " */\n";
+
+$nbelement = @insttype;
+
+print OPCODES_IMP "static int instr_type_id[$nbelement] = {";
+
+for ($i = 0; $i < $nbelement; $i++) {
+ if ($i % 16 == 0) {
+ print OPCODES_IMP "\n\t";
+ } else {
+ print OPCODES_IMP " ";
+ }
+ print OPCODES_IMP "$insttype[$i],";
+}
+print OPCODES_IMP "\n";
+print OPCODES_IMP "};\n";
+print OPCODES_IMP "\n";
+
+# ------------------------------------------------------------------------------
+print OPCODES_IMP "/* List of instructions types referenced by instr_type_id[] */\n";
+$nbelement = @insttext;
+$elementnb = 0;
+print OPCODES_IMP "static char *instr_type_str[$nbelement] = {\n";
+
+foreach $instruc (@insttext) {
+ print OPCODES_IMP "\t\"$instruc\"";
+ if ($elementnb++ < ($nbelement - 1)) {
+ print OPCODES_IMP ",";
+ }
+ print OPCODES_IMP "\n";
+}
+
+print OPCODES_IMP "};\n";
+print OPCODES_IMP "\n";
+
+# ------------------------------------------------------------------------------
+print OPCODES_IMP "/*\n";
+print OPCODES_IMP " * Table describing all arguments types of an instruction\n";
+print OPCODES_IMP " * The table is indexed instr_arg_type_id[ opcode * 4]\n";
+print OPCODES_IMP " * instr_arg_type_id[opcode*4 + 1] gives number of instruction arguments\n";
+print OPCODES_IMP " * instr_arg_type_id[opcode*4 + i] for i=1,2 and 3 gives type of each argument\n";
+print OPCODES_IMP " * for most instructions, the 3rd argument isn't used\n";
+print OPCODES_IMP " * the argument type is referenced to instr_arg_type_str[]\n";
+print OPCODES_IMP " */\n";
+
+$nbelement = @instargs;
+
+print OPCODES_IMP "static int instr_arg_type_id[$nbelement] = {";
+
+for ($i = 0; $i < $nbelement; $i++) {
+ if ($i % 16 == 0) {
+ print OPCODES_IMP "\n\t";
+ } else {
+ print OPCODES_IMP " ";
+ }
+
+ print OPCODES_IMP "$instargs[$i],";
+}
+print OPCODES_IMP "\n";
+print OPCODES_IMP "};\n";
+print OPCODES_IMP "\n";
+
+# ------------------------------------------------------------------------------
+print OPCODES_IMP "/*\n";
+print OPCODES_IMP " * List all types of arguments available to instructions\n";
+print OPCODES_IMP " * Referenced by instr_arg_type_id[]\n";
+print OPCODES_IMP " */\n";
+
+$nbelement = @argstypes;
+$elementnb = 0;
+
+print OPCODES_IMP "static char *instr_arg_type_str[$nbelement] = {\n";
+
+foreach $args (@argstypes) {
+ print OPCODES_IMP "\t\"$args\"";
+ if ($elementnb++ < $nbelement-1) {
+ print OPCODES_IMP ",";
+ }
+ print OPCODES_IMP "\n";
+}
+print OPCODES_IMP "};\n";
+print OPCODES_IMP "\n";
+
+print OPCODES_IMP "int\n";
+print OPCODES_IMP "opcodes_get_instr_size(uint8_t opcode)\n";
+print OPCODES_IMP "{\n";
+print OPCODES_IMP "\treturn instr_size[opcode];\n";
+print OPCODES_IMP "}\n";
+print OPCODES_IMP "\n";
+
+print OPCODES_IMP "char *\n";
+print OPCODES_IMP "opcodes_get_instr_type_str(uint8_t opcode)\n";
+print OPCODES_IMP "{\n";
+print OPCODES_IMP "\treturn instr_type_str[instr_type_id[opcode]];\n";
+print OPCODES_IMP "}\n";
+print OPCODES_IMP "\n";
+
+print OPCODES_IMP "int\n";
+print OPCODES_IMP "opcodes_get_instr_arg_type_id(unsigned int offset)\n";
+print OPCODES_IMP "{\n";
+print OPCODES_IMP "\treturn instr_arg_type_id[offset];\n";
+print OPCODES_IMP "}\n";
+print OPCODES_IMP "\n";
+
+print OPCODES_IMP "char *\n";
+print OPCODES_IMP "opcodes_get_instr_arg_type_str(unsigned int offset)\n";
+print OPCODES_IMP "{\n";
+print OPCODES_IMP "\treturn instr_arg_type_str[instr_arg_type_id[offset]];\n";
+print OPCODES_IMP "}\n";
+print OPCODES_IMP "\n";
+
+
+# ------------------------------------------------------------------------------
+for ($i = 0 ; $i < 256; $i++) {
+ print INST_IMP "/*","*"x76,"\n";
+ print INST_IMP " * Instruction \"$a_instruction[$i]\" takes $a_cycles[$i] cycle(s) and $a_bytes[$i] byte(s).\n";
+ print INST_IMP " ","*"x76,"/\n";
+ print INST_IMP "int\n";
+ print INST_IMP "cpu8051_OP_$a_opcodehex[$i](void)\n";
+ print INST_IMP "{\n";
+
+ if( $i == 0x85 ) {
+ # Cas particulier pour MOV direct,direct -> src et dest sont inverses dans la memoire
+ print INST_IMP " unsigned char srcaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );\n";
+ print INST_IMP " unsigned char source = mem_read_direct( srcaddr );\n";
+ print INST_IMP " unsigned char destaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );\n";
+ print INST_IMP " unsigned char destination = mem_read_direct( destaddr );\n";
+ print INST_IMP " destination = source;\n";
+ print INST_IMP " mem_write_direct( destaddr, destination );\n";
+ }
+ else {
+ if ($instargs[$i*4] > 0) {
+ $op_destination=$instargs[$i*4+1];
+ if ($op_destination == 0) { # addr11
+ cfw("unsigned int addr11 = ( ( mem_read8( PGM_MEM_ID, cpu8051.pc - 1 ) << 3 ) & 0xF00 ) + mem_read8( PGM_MEM_ID, cpu8051.pc );");
+ cfw("cpu8051.pc++;");
+ }
+ if ($op_destination == 1) { # addr16
+ cfw("uint16_t addr16 = pgm_read_addr16(cpu8051.pc);");
+ cfw("cpu8051.pc += 2;");
+ }
+ if ($op_destination == 2) { # A
+ cfw("unsigned char destination = mem_read_direct( _ACC_ );");
+ }
+ if ($op_destination == 3) { # direct
+ cfw("unsigned char destaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
+ cfw("unsigned char destination = mem_read_direct( destaddr );");
+ }
+ if ($op_destination == 4) { # @R0
+ cfw("unsigned char destination = mem_read_indirect ( mem_read_direct( BANKPSW + _R0_ ) );");
+ }
+ if ($op_destination == 5) { # @R1
+ cfw("unsigned char destination = mem_read_indirect ( mem_read_direct( BANKPSW + _R1_ ) );");
+ }
+ if ($op_destination == 6) { # R0
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R0_ );");
+ }
+ if ($op_destination == 7) { # R1
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R1_ );");
+ }
+ if ($op_destination == 8) { # R2
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R2_ );");
+ }
+ if ($op_destination == 9) { # R3
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R3_ );");
+ }
+ if ($op_destination == 10) { # R4
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R4_ );");
+ }
+ if ($op_destination == 11) { # R5
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R5_ );");
+ }
+ if ($op_destination == 12) { # R6
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R6_ );");
+ }
+ if ($op_destination == 13) { # R7
+ cfw("unsigned char destination = mem_read_direct( BANKPSW + _R7_ );");
+ }
+ if ($op_destination == 14) { # bitaddr
+ cfw("unsigned char destination, dstbitaddr = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
+ cfw("destination = mem_read_bit( dstbitaddr );");
+ }
+ if ($op_destination == 15) { # reladdr
+ cfw("cpu8051.pc++;");
+ cfw("unsigned int destination = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc - 1)) + cpu8051.pc;");
+ }
+ if ($op_destination == 16) { # #data
+ cfw("unsigned char destination = mem_read8( PGM_MEM_ID, cpu8051.pc++ );");
+ }
+ if ($op_destination == 17) { # C
+ cfw("unsigned char destination = psw_read_cy();");
+ }
+ if ($op_destination == 18) { # @A+DPTR
+ cfw("unsigned int destination = mem_read_direct( _ACC_ ) + mem_sfr_read_dptr();");
+ }
+ if ($op_destination == 20) { # AB
+ cfw("unsigned char destination = mem_read_direct( _ACC_ );");
+ cfw("unsigned char source = mem_read_direct( _B_ );");
+ }
+ if ($op_destination == 21) { # DPTR
+ cfw("unsigned int destination = mem_sfr_read_dptr();");
+ }
+ if ($op_destination == 23) { # /bitaddr
+ cfw("unsigned char destination, dstbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ cfw("destination = ( mem_read_bit( dstbitaddr ) ^ 1 );");
+ }
+ if ($op_destination == 24) { # @DPTR
+ cfw("unsigned char destination = mem_read_indirect(mem_sfr_read_dptr());");
+ }
+ }
+
+ if ($instargs[$i*4] > 1) {
+ $op_source=$instargs[$i*4+2];
+ if ($op_source == 0) { # addr11
+ cfw("unsigned int addr11 = ( ( mem_read8( PGM_MEM_ID, cpu8051.pc - 1 ) << 3 ) & 0xF00 ) + mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ }
+ if ($op_source == 1) { # addr16
+ cfw("uint16_t addr16 = pgm_read_addr16(cpu8051.pc);");
+ cfw("cpu8051.pc += 2;");
+ }
+ if ($op_source == 2) { # A
+ cfw("unsigned char source = mem_read_direct( _ACC_ );");
+ }
+ if ($op_source == 3) { # direct
+ cfw("unsigned char srcaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ cfw("unsigned char source = mem_read_direct( srcaddr );");
+ }
+ if ($op_source == 4) { # @R0
+ cfw("unsigned char source = mem_read_indirect ( mem_read_direct( BANKPSW + _R0_ ) );");
+ }
+ if ($op_source == 5) { # @R1
+ cfw("unsigned char source = mem_read_indirect ( mem_read_direct( BANKPSW + _R1_ ) );");
+ }
+ if ($op_source == 6) { # R0
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R0_ );");
+ }
+ if ($op_source == 7) { # R1
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R1_ );");
+ }
+ if ($op_source == 8) { # R2
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R2_ );");
+ }
+ if ($op_source == 9) { # R3
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R3_ );");
+ }
+ if ($op_source == 10) { # R4
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R4_ );");
+ }
+ if ($op_source == 11) { # R5
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R5_ );");
+ }
+ if ($op_source == 12) { # R6
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R6_ );");
+ }
+ if ($op_source == 13) { # R7
+ cfw("unsigned char source = mem_read_direct( BANKPSW + _R7_ );");
+ }
+
+ if ($op_source == 14) { # bitaddr
+ cfw("unsigned char source, srcbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ cfw("source = mem_read_bit( srcbitaddr );");
+ }
+ if ($op_source == 15) { # reladdr
+ cfw("(cpu8051.pc)++;");
+ cfw("unsigned int source = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc - 1)) + cpu8051.pc;");
+ }
+ if ($op_source == 16) { # #data
+ cfw("unsigned char source = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ }
+ if ($op_source == 17) { # C
+ cfw("unsigned char source = psw_read_cy();");
+ }
+ if ($op_source == 18) { # @A+DPTR
+ cfw("unsigned char source = mem_read8( PGM_MEM_ID, mem_read_direct( _ACC_ ) + mem_sfr_read_dptr());");
+ }
+ if ($op_source == 19) { # @A+PC
+ cfw("unsigned char source = mem_read8( PGM_MEM_ID, mem_read_direct( _ACC_ ) + ( ++cpu8051.pc ) );");
+ }
+ if ($op_source == 21) { # DPTR
+ cfw("unsigned int source = mem_sfr_read_dptr();");
+ }
+ if ($op_source == 22) { # #data16
+ cfw("uint16_t source = pgm_read_addr16(cpu8051.pc);");
+ cfw("cpu8051.pc += 2;");
+ }
+ if ($op_source == 23) { # /bitaddr
+ cfw("unsigned char source, srcbitaddr = mem_read8( PGM_MEM_ID, (cpu8051.pc)++ );");
+ cfw("source = ( mem_read_bit( srcbitaddr ) ^ 1 );");
+ }
+ if ($op_source == 24) { # @DPTR
+ cfw("unsigned char source = mem_read_indirect(mem_sfr_read_dptr());");
+ }
+ }
+
+##############################################################################
+ $modifysrc=0;
+
+ # RR
+ if ($insttype[$i] == 3) {
+ cfw("destination = ( destination >> 1 ) | ( destination << 7 );");
+ }
+
+ # INC
+ if ($insttype[$i] == 4) {
+ cfw("destination++;");
+ }
+
+ # JBC
+ if ($insttype[$i] == 5) {
+ cfw("if ( destination == 1 ) { cpu8051.pc = source; destination = 0; }");
+ }
+
+ # ACALL
+ if ($insttype[$i] == 6) {
+ cfw("stack_push16(cpu8051.pc);");
+ }
+
+ # LCALL
+ if ($insttype[$i] == 7) {
+ cfw("stack_push16(cpu8051.pc);");
+ }
+
+ # RRC
+ if ($insttype[$i] == 8) {
+ cfw("unsigned char new_cy = destination & 0x01;");
+ cfw("destination = ( destination >> 1 ) | (psw_read_cy() << 7);");
+ cfw("psw_write_cy(new_cy);");
+ }
+
+ # DEC
+ if ($insttype[$i] == 9) {
+ cfw("destination--;");
+ }
+
+ # JB
+ if ($insttype[$i] == 10) {
+ cfw("if ( destination == 1 ) { cpu8051.pc = source; }");
+ }
+
+ # RET
+ if ($insttype[$i] == 11) {
+ cfw("cpu8051.pc = stack_pop16();");
+ }
+
+ # RL
+ if ($insttype[$i] == 12) {
+ cfw("destination = ( destination << 1 ) | ( destination >> 7 );");
+ }
+
+ # ADD
+ if ($insttype[$i] == 13) {
+ cfw("destination = addition(destination, source, 0);");
+ }
+
+ # JNB
+ if ($insttype[$i] == 14) {
+ cfw("if ( destination == 0 ) { cpu8051.pc = source; }");
+ }
+
+ # RETI
+ if ($insttype[$i] == 15) {
+ cfw("cpu8051.active_priority = -1;");
+ cfw("cpu8051.pc = stack_pop16();");
+ }
+
+ # RLC
+ if ($insttype[$i] == 16) {
+ cfw("unsigned char new_cy = destination & 0x80;");
+ cfw("destination = ( destination << 1 ) | psw_read_cy();");
+ cfw("psw_write_cy(new_cy);");
+ }
+
+ # ADDC
+ # ADD and ADDC function identically except that ADDC adds the value of
+ # operand as well as the value of the Carry flag whereas ADD does not
+ # add the Carry flag to the result.
+ if ($insttype[$i] == 17) {
+ cfw("unsigned char carryflag = psw_read_cy();");
+ cfw("destination = addition(destination, source, carryflag);");
+ }
+
+ # JC
+ if ($insttype[$i] == 18) {
+ cfw("if (psw_read_cy()) { cpu8051.pc = destination; }");
+ }
+
+ # ORL
+ if ($insttype[$i] == 19) {
+ cfw("destination |= source;");
+ }
+
+ # JNC
+ if ($insttype[$i] == 20) {
+ cfw("if (psw_read_cy() == 0) { cpu8051.pc = destination; }");
+ }
+
+ # ANL
+ if ($insttype[$i] == 21) {
+ cfw("destination &= source;");
+ }
+
+ # JZ
+ if ($insttype[$i] == 22) {
+ cfw("if ( mem_read_direct( _ACC_ ) == 0 ) { cpu8051.pc = destination; }");
+ }
+
+ # XRL
+ if ($insttype[$i] == 23) {
+ cfw("destination ^= source;");
+ }
+
+ # JNZ
+ if ($insttype[$i] == 24) {
+ cfw("if ( mem_read_direct( _ACC_ ) != 0 ) { cpu8051.pc = destination; }");
+ }
+
+ # JMP
+ if ($insttype[$i] == 25) {
+ cfw("cpu8051.pc = destination;");
+ }
+
+ # MOV
+ if ($insttype[$i] == 26) {
+ cfw("destination = source;");
+ }
+
+ # SJMP
+ if ($insttype[$i] == 27) {
+ cfw("cpu8051.pc = destination;");
+ }
+
+ # MOVC
+ if ($insttype[$i] == 28) {
+ cfw("destination = source;");
+ }
+
+ # DIV
+ if ($insttype[$i] == 29) {
+ # A = destination
+ # B = source
+ cfw("psw_clr_cy();");
+ # If B is zero, the OV flag will be set indicating a
+ # division-by-zero error
+ cfw("if (source != 0) {");
+ cfw(" mem_write_direct(_ACC_, destination/source);");
+ cfw(" mem_write_direct( _B_, destination%source);");
+ cfw(" psw_clr_ov();");
+ cfw("} else {");
+ cfw(" psw_set_ov();");
+ cfw("}");
+ }
+
+ # SUBB
+ if ($insttype[$i] == 30) {
+ cfw("unsigned char carryflag = psw_read_cy();");
+ cfw("psw_clr_cy();");
+ cfw("psw_clr_ac();");
+ cfw("psw_clr_ov();");
+ cfw("if ( destination < ( source + carryflag ) ) {");
+ cfw(" psw_set_cy();");
+ cfw(" if ((destination & 0x7F) > ((source + carryflag) & 0x7F)) psw_set_ov();");
+ cfw("} else if ((destination & 0x7F) < ((source + carryflag) & 0x7F)) psw_set_ov();");
+ cfw("if ((destination & 0x0F) < ((source + carryflag) & 0x0F)) psw_set_ac();");
+ cfw("destination -= source + carryflag;");
+ }
+
+ # MUL
+ if ($insttype[$i] == 31) {
+ # A = destination
+ # B = source
+ cfw("psw_clr_cy();");
+ cfw("mem_write_direct(_ACC_, destination * source);");
+ cfw("mem_write_direct(_B_, (destination * source) / 0x100);");
+ cfw("if (mem_read_direct(_B_) > 0)");
+ cfw(" psw_set_ov();");
+ cfw("else");
+ cfw(" psw_clr_ov();");
+ }
+
+ # CPL
+ if ($insttype[$i] == 33) {
+ if ($instargs[$i*4+1] == 2) { cfw("destination ^= 0xFF;"); }
+ else { cfw("destination ^= 0x01;"); }
+ }
+
+ # CJNE
+ if ($insttype[$i] == 34) {
+ cfw("unsigned int reladdr = ((char) mem_read8(PGM_MEM_ID, cpu8051.pc)) + (cpu8051.pc + 1);");
+ cfw("psw_clr_cy();");
+ cfw("if ( destination < source ) psw_set_cy();");
+ cfw("if ( destination != source ) cpu8051.pc = reladdr; else cpu8051.pc++;");
+ }
+
+ # PUSH
+ if ($insttype[$i] == 35) {
+ cfw("stack_push8(destination);");
+ }
+
+ # CLR
+ if ($insttype[$i] == 36) {
+ cfw("destination = 0;");
+ }
+
+ # SWAP
+ if ($insttype[$i] == 37) {
+ cfw("destination = ( destination << 4 ) + ( destination >> 4 );");
+ }
+
+ # XCH
+ if ($insttype[$i] == 38) {
+ cfw("unsigned char tmpval = destination;");
+ cfw("destination = source; source = tmpval;");
+ $modifysrc=1;
+ }
+
+ # POP
+ if ($insttype[$i] == 39) {
+ cfw("destination = stack_pop8();");
+ }
+
+ # SETB
+ if ($insttype[$i] == 40) {
+ cfw("destination = 1;");
+ }
+
+ # DA
+ if ($insttype[$i] == 41) {
+ cfw("if (((destination & 0x0F) > 9) || psw_read_ac()) {");
+ cfw(" if ( ( destination + 6 ) > 0xFF) psw_set_cy();");
+ cfw(" destination += 6;");
+ cfw("}");
+ cfw("if ( psw_read_cy() || ( ( destination & 0xF0 ) > 0x90 ) ) {");
+ cfw(" if ( ( destination + 0x60 ) > 0xFF ) psw_set_cy();");
+ cfw(" destination += 0x60;");
+ cfw("}");
+ }
+
+ # DJNZ
+ if ($insttype[$i] == 42) {
+ cfw("destination--;");
+ cfw("if ( destination != 0 ) cpu8051.pc = source;");
+ }
+
+ # XCHD
+ if ($insttype[$i] == 43) {
+ cfw("unsigned char tmpval = ( destination & 0x0F );");
+ cfw("destination = ( destination & 0xF0 ) + ( source & 0x0F );");
+ cfw("source = ( source & 0xF0 ) + tmpval;");
+ $modifysrc=1;
+ }
+
+ # MOVX
+ if ($insttype[$i] == 44) {
+ cfw("destination = source;");
+ }
+
+
+
+##############################################################################
+
+
+ if ($instargs[$i*4] > 0) {
+ $op_destination=$instargs[$i*4+1];
+ if ($op_destination == 0) { # addr11
+ cfw("cpu8051.pc = ( cpu8051.pc & 0xF800 ) | addr11;");
+ }
+ if ($op_destination == 1) { # addr16
+ cfw("cpu8051.pc = addr16;");
+ }
+ if ($op_destination == 2) { # A
+ cfw("mem_write_direct( _ACC_, destination );");
+ }
+ if ($op_destination == 3) { # direct
+ cfw("mem_write_direct( destaddr, destination );");
+ }
+ if ($op_destination == 4) { # @R0
+ cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R0_ ), destination );");
+ }
+ if ($op_destination == 5) { # @R1
+ cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R1_ ), destination );");
+ }
+ if ($op_destination == 6) { # R0
+ cfw("mem_write_direct( BANKPSW + _R0_, destination );");
+ }
+ if ($op_destination == 7) { # R1
+ cfw("mem_write_direct( BANKPSW + _R1_, destination );");
+ }
+ if ($op_destination == 8) { # R2
+ cfw("mem_write_direct( BANKPSW + _R2_, destination );");
+ }
+ if ($op_destination == 9) { # R3
+ cfw("mem_write_direct( BANKPSW + _R3_, destination );");
+ }
+ if ($op_destination == 10) { # R4
+ cfw("mem_write_direct( BANKPSW + _R4_, destination );");
+ }
+ if ($op_destination == 11) { # R5
+ cfw("mem_write_direct( BANKPSW + _R5_, destination );");
+ }
+ if ($op_destination == 12) { # R6
+ cfw("mem_write_direct( BANKPSW + _R6_, destination );");
+ }
+ if ($op_destination == 13) { # R7
+ cfw("mem_write_direct( BANKPSW + _R7_, destination );");
+ }
+
+ if ($op_destination == 14) { # bitaddr
+ cfw("mem_write_bit( dstbitaddr, destination );");
+ }
+ if ($op_destination == 17) { # C
+ cfw("psw_write_cy(destination);");
+ }
+ if ($op_destination == 21) { # DPTR
+ cfw("mem_sfr_write_dptr(destination);");
+ }
+ if ($op_destination == 23) { # /bitaddr
+ cfw("mem_write_bit( dstbitaddr, destination );");
+ }
+ if ($op_destination == 24) { # @DPTR
+ cfw("mem_write_indirect(mem_sfr_read_dptr(), destination);");
+ }
+ }
+
+ if ($modifysrc == 1) {
+ if ($instargs[$i*4] > 1) {
+ $op_source=$instargs[$i*4+2];
+ if ($op_source == 0) { # addr11
+ cfw("cpu8051.pc = ( cpu8051.pc & 0xF800 ) | addr11;");
+ }
+ if ($op_source == 1) { # addr16
+ cfw("cpu8051.pc = addr16;");
+ }
+ if ($op_source == 2) { # A
+ cfw("mem_write_direct( _ACC_, source );");
+ }
+ if ($op_source == 3) { # direct
+ cfw("mem_write_direct( srcaddr, source );");
+ }
+ if ($op_source == 4) { # @R0
+ cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R0_ ), source );");
+ }
+ if ($op_source == 5) { # @R1
+ cfw("mem_write_indirect( mem_read_direct( BANKPSW + _R1_ ), source );");
+ }
+ if ($op_source == 6) { # R0
+ cfw("mem_write_direct( BANKPSW + _R0_, source );");
+ }
+ if ($op_source == 7) { # R1
+ cfw("mem_write_direct( BANKPSW + _R1_, source );");
+ }
+ if ($op_source == 8) { # R2
+ cfw("mem_write_direct( BANKPSW + _R2_, source );");
+ }
+ if ($op_source == 9) { # R3
+ cfw("mem_write_direct( BANKPSW + _R3_, source );");
+ }
+ if ($op_source == 10) { # R4
+ cfw("mem_write_direct( BANKPSW + _R4_, source );");
+ }
+ if ($op_source == 11) { # R5
+ cfw("mem_write_direct( BANKPSW + _R5_, source );");
+ }
+ if ($op_source == 12) { # R6
+ cfw("mem_write_direct( BANKPSW + _R6_, source );");
+ }
+ if ($op_source == 13) { # R7
+ cfw("mem_write_direct( BANKPSW + _R7_, source );");
+ }
+ if ($op_source == 14) { # bitaddr
+ cfw("mem_write_bit( srcbitaddr, source );");
+ }
+ if ($op_source == 17) { # C
+ cfw("psw_write_cy(source);");
+ }
+ if ($op_source == 21) { # DPTR
+ cfw("mem_sfr_write_dptr(source);");
+ }
+ if ($op_source == 23) { # /bitaddr
+ cfw("mem_write_bit( srcbitaddr, source );");
+ }
+ if ($op_source == 24) { # @DPTR
+ cfw("mem_write_indirect(mem_sfr_read_dptr(), source);");
+ }
+ }
+ }
+ }
+ cfw("return $a_cycles[$i];");
+ print INST_IMP "}\n";
+ print INST_IMP "\n";
+}
+# ------------------------------------------------------------------------------
+
+
+# Header for instructions_8051.h
+print INST_DEF "/*\n";
+print INST_DEF " * instructions_8051.h\n";
+write_header(INST_DEF);
+print INST_DEF "#ifndef INSTRUCTIONS_8051_H\n";
+print INST_DEF "#define INSTRUCTIONS_8051_H 1\n\n\n";
+print INST_DEF "#define BANKPSW (mem_read_direct(_PSW_) & 0x18)\n\n";
+print INST_DEF "typedef int (*OPCODE_FP)(void);\n\n\n";
+for( $i=0; $i<256; $i++ ) {
+ print INST_DEF "int\n";
+ print INST_DEF "cpu8051_OP_$a_opcodehex[$i](void);\n\n";
+}
+print INST_DEF "\n";
+print INST_DEF "/* Exported variables. */\n";
+print INST_DEF "#ifdef INSTRUCTIONS_8051_M\n";
+print INST_DEF "OPCODE_FP opcode_table[256] = {\n";
+
+for ($i = 0; $i < 256; $i++) {
+ $ifunc = substr($instfunction[$i], 9);
+
+ print INST_DEF "\tcpu8051_$ifunc,\n";
+}
+print INST_DEF "};\n";
+print INST_DEF "#else\n";
+print INST_DEF "OPCODE_FP opcode_table[256];\n";
+print INST_DEF "#endif\n\n\n";
+
+print INST_DEF "#endif /* INSTRUCTIONS_8051_H */\n";
+
+print OPCODES_DEF "#endif /* OPCODES_IMP */\n";
+
+close OPCODES_DEF;
+close OPCODES_IMP;
+close OPCODELST;
+close INST_DEF;
+close INST_IMP;
projects / emu8051.git / commitdiff