+++ /dev/null
-%{
-/* This file is part of Paul's XA51 Assembler, Copyright 1997,2002 Paul Stoffregen
- *
- * Paul's XA51 Assembler is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2.
- *
- * Paul's XA51 Assembler is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Foobar; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* Author contact: paul@pjrc.com */
-
-/* parser for the 51-XA assembler, Paul Stoffregen, July 1997 */
-#include <stdio.h>
-
-#include "xa_main.h"
-
-int op[MAX_DB];
-int size;
-int inst_size;
-int arith_opcode, short_opcode, num_op, opcode0, opcode1;
-int shift_imm_opcode, shift_reg_opcode, rotate_opcode;
-int stack_addr_opcode, stack_reg_opcode, branch_opcode;
-int rlist_reg_bank, rlist_bitmask, rlist_size;
-int db_count, dw_count, i;
-char symbol_name[MAX_SYMBOL], base_symbol_name[MAX_SYMBOL]={'\0'};
-char expr_var[MAX_SYMBOL]={0,0,0,'\0'};
-
-extern char lex_sym_name[];
-extern int yylex();
-
-extern void yyrestart(FILE *new_file);
-extern char * disasm(int byte, int memory_location);
-extern void hexout(int byte, int memory_location, int end);
-void error(char *s);
-
-static int bitmask[]={1, 2, 4, 8, 16, 32, 64, 128};
-
-%}
-
-%token ADD ADDC ADDS AND ANL ASL ASR BCC BCS BEQ BG BGE BGT
-%token BKPT BL BLE BLT BMI BNE BNV BOV BPL BR CALL CJNE CLR
-%token CMP CPL DA DIV DIVU DJNZ FCALL FJMP JB JBC JMP JNB JNZ
-%token JZ LEA LSR MOV MOVC MOVS MOVX MUL MULU NEG NOP NORM
-%token OR ORL POP POPU PUSH PUSHU RESET RET RETI RL RLC RR RRC
-%token SETB SEXT SUB SUBB TRAP XCH XOR
-%token REG DPTR PC A C USP
-%token WORD BIT NUMBER CHAR STRING EOL LOCAL_LABEL
-%token ORG EQU SFR DB DW BITDEF REGDEF LOW HIGH
-%token RSHIFT LSHIFT
-%token AREA AREA_NAME AREA_DESC DS
-%token MODULE GLOBL
-
-%left '&' '|' '^'
-%left RSHIFT LSHIFT
-%left '+' '-'
-%left '*' '/'
-%nonassoc UNARY
-
-%%
-
-all: line
- | line all;
-
-line: linesymbol ':' linenosym {
- if (p1) {
- build_sym_list(symbol_name);
- if (current_area == AREA_BSEG) {
- mk_bit(symbol_name);
- }
- }
- if (p1 || p2) assign_value(symbol_name, MEM_POS);
- MEM_POS += $3;
- }
- | linenosym {
- MEM_POS += $1;
- }
-
-linenosym: directive EOL {
- if (p3) out(op, $1);
- $$ = $1;
- }
- | instruction EOL {
- if (p3) out(op, $1);
- $$ = $1;
- }
- | EOL {
- if (p3) out(NULL, 0);
- $$ = 0;
- }
- | error EOL /* try to recover from any parse error */
-
-
-directive: '.' ORG expr {
- MEM_POS = $3;
- $$ = 0;
- }
- | ORG expr {
- MEM_POS = $2;
- $$ = 0;
- }
- | '.' EQU symbol ',' expr {
- if (p1) build_sym_list(symbol_name);
- if (p1 || p2) assign_value(symbol_name, $5);
- $$ = 0;
- }
- | normal_or_bit_symbol '=' expr {
- if (p1) build_sym_list(symbol_name);
- if (p1 || p2) assign_value(symbol_name, $3);
- }
- | symbol SFR expr {
- if (p1) build_sym_list(symbol_name);
- if (p1 || p2) assign_value(symbol_name, $3);
- if (p1 || p2) mk_sfr(symbol_name);
- $$ = 0;
- }
- | '.' BITDEF bitsymbol ',' bit {
- if (p1) {
- build_sym_list(symbol_name);
- mk_bit(symbol_name);
- }
- if (p1 || p2) assign_value(symbol_name, $5);
- $$ = 0;
- }
- | bitsymbol BITDEF bit {
- if (p1) {
- build_sym_list(symbol_name);
- mk_bit(symbol_name);
- }
- if (p1 || p2) assign_value(symbol_name, $3);
- $$ = 0;
- }
- | bitsymbol BITDEF expr {
- if (p1) {
- build_sym_list(symbol_name);
- mk_bit(symbol_name);
- }
- if (p1 || p2) assign_value(symbol_name, $3);
- $$ = 0;
- }
- | '.' REGDEF regsymbol ',' REG {
- if (p1) {
- build_sym_list(symbol_name);
- mk_reg(symbol_name);
- }
- if (p1 || p2) assign_value(symbol_name, $5);
- $$ = 0;
- }
- | regsymbol REGDEF REG {
- if (p1) {
- build_sym_list(symbol_name);
- mk_reg(symbol_name);
- }
- if (p1 || p2) assign_value(symbol_name, $3);
- $$ = 0;
- }
-
- | '.' db_directive bytes {
- $$ = db_count;
- }
- | '.' dw_directive words {
- $$ = dw_count;
- }
- | '.' AREA AREA_NAME AREA_DESC {
- if ($3 < 0 || $3 >= NUM_AREAS) {
- error("Illegal Area Directive");
- }
- symbol_name[0] = '\0';
- current_area = $3;
- $$ = 0;
- }
- | '.' MODULE WORD {
- /* ignore module definition */
- $$ = 0;
- }
- | '.' GLOBL WORD {
- /* ignore global symbol declaration */
- $$ = 0;
- }
- | '.' GLOBL bit {
- /* ignore bit symbol declaration */
- $$ = 0;
- }
- | '.' DS expr {
- /* todo: if CSEG, emit some filler bytes */
- $$ = $3;
- }
-
-db_directive: DB {db_count = 0;}
-
-
-linesymbol: normal_or_bit_symbol {
- strcpy(symbol_name, lex_sym_name);
- if (!strchr(lex_sym_name, ':')) {
- /* non-local label, remember base name */
- strcpy(base_symbol_name, lex_sym_name);
- }
- if (is_target(symbol_name)) pad_with_nop();
- }
-
-normal_or_bit_symbol: WORD {$$ = $1;}
- | BIT {$$ = $1;}
-
-bytes: byte_element
- | bytes ',' byte_element
-
-byte_element: expr {
- op[db_count] = $1 & 255;
- if (++db_count >= MAX_DB) {
- error("too many bytes, use two DB");
- db_count--;
- }
- }
- | STRING {
- for(i=1; i < strlen(yytext)-1; i++) {
- op[db_count++] = yytext[i];
- if (db_count >= MAX_DB) {
- error("too many bytes, use two DB");
- db_count--;
- }
- }
- }
-
-dw_directive: DW {dw_count = 0;}
-
-words: words ',' word_element
- | word_element
-
-word_element: expr {
- op[dw_count] = $1 & 255;
- op[dw_count+1] = ($1 >> 8) & 255;
- dw_count += 2;
- if (dw_count >= MAX_DB) {
- error("too many bytes, use two DW");
- db_count -= 2;
- }
- }
-
-
-
-symbol: WORD {
- strcpy(symbol_name, lex_sym_name);
- }
-
-bitsymbol: WORD { strcpy(symbol_name, lex_sym_name); }
- | BIT { strcpy(symbol_name, lex_sym_name); }
-
-
-regsymbol: WORD { strcpy(symbol_name, lex_sym_name); }
- | REG { strcpy(symbol_name, lex_sym_name); }
-
-bit: expr '.' expr {
- if ($3 < 0 || $3 > 7) {
- /* only 8 bits in a byte */
- error("Only eight bits in a byte");
- }
- $$ = 100000; /* should really check $1 is valid */
- if ($1 >= 0x20 && $1 <= 0x3F) {
- $$ = $1 * 8 + $3;
- }
- if ($1 >= 0x400 && $1 <= 0x43F) {
- $$ = ($1 - 0x400) * 8 + $3 + 0x200;
- }
- }
- | REG '.' expr {
- $$ = 100000;
- if (find_size_reg($1) == SIZE8) {
- if ($3 < 0 || $3 > 7)
- error("byte reg has only 8 bits");
- $$ = reg($1) * 8 + $3;
- }
- if (find_size_reg($1) == SIZE16) {
- if ($3 < 0 || $3 > 15)
- error("word reg has only 16 bits");
- $$ = reg($1) * 16 + $3;
- }
- }
- | BIT {$$ = $1;}
-
-jmpaddr: WORD {
- $$ = $1;
- if (p1) build_target_list(lex_sym_name);
- }
- | NUMBER {
- if ($1 & 1) error("Jump target must be aligned");
- $$ = $1;
- }
-
-
-expr: value {$$ = $1;}
- | expr '+' expr {$$ = $1 + $3;}
- | expr '-' expr {$$ = $1 - $3;}
- | expr '*' expr {$$ = $1 * $3;}
- | expr '/' expr {$$ = $1 / $3;}
- | expr '&' expr {$$ = $1 & $3;}
- | expr '|' expr {$$ = $1 | $3;}
- | expr '^' expr {$$ = $1 ^ $3;}
- | expr RSHIFT expr {$$ = $1 >> $3;}
- | expr LSHIFT expr {$$ = $1 << $3;}
- | '-' expr %prec UNARY {$$ = $2 * -1;}
- | '+' expr %prec UNARY {$$ = $2;}
- | '(' expr ')' {$$ = $2;}
- | LOW expr %prec UNARY {$$ = $2 & 255;}
- | HIGH expr %prec UNARY {$$ = ($2 >> 8) & 255;}
-
-
-value: NUMBER {$$ = $1;}
- | CHAR {$$ = $1;}
- | WORD {$$ = $1; strcpy(expr_var, yytext);}
-
-
-rlist: REG {
- rlist_bitmask = bitmask[reg($1) % 8];
- rlist_reg_bank = (reg($1) / 8) ? 1 : 0;
- rlist_size = find_size_reg($1);
- }
- | REG ',' rlist {
- rlist_bitmask |= bitmask[reg($1) % 8];
- if (rlist_reg_bank != ((reg($1) / 8) ? 1 : 0))
- error("register list may not mix 0-7/8-15 regs");
- if (rlist_size != find_size_reg($1))
- error("register list may not mix 8/16 bit registers");
- }
-
-
-
-
-
-instruction:
-
- arith_inst REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- op[0] = arith_opcode * 16 + size * 8 + 1;
- op[1] = reg($2) * 16 + reg($4);
- }
-| arith_inst REG ',' '[' REG ']' {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = arith_opcode * 16 + size * 8 + 2;
- op[1] = reg($2) * 16 + reg_indirect($5);
- }
-| arith_inst '[' REG ']' ',' REG {
- $$ = 2;
- size = find_size1(inst_size, $6);
- op[0] = arith_opcode * 16 + size * 8 + 2;
- op[1] = reg($6) * 16 + 8 + reg_indirect($3);
- }
-| arith_inst REG ',' '[' REG '+' expr ']' {
- size = find_size1(inst_size, $2);
- if ($7 >= -128 && $7 <= 127) {
- $$ = 3;
- op[0] = arith_opcode * 16 + size * 8 + 4;
- op[1] = reg($2) * 16 + reg_indirect($5);
- op[2] = ($7 >= 0) ? $7 : 256 + $7;
- } else {
- $$ = 4;
- op[0] = arith_opcode * 16 + size * 8 + 5;
- op[1] = reg($2) * 16 + reg_indirect($5);
- op[2] = ($7 >= 0) ? msb($7) : msb(65536 + $7);
- op[3] = ($7 >= 0) ? lsb($7) : lsb(65536 + $7);
- }
- }
-| arith_inst '[' REG '+' expr ']' ',' REG {
- size = find_size1(inst_size, $8);
- if ($5 >= -128 && $5 <= 127) {
- $$ = 3;
- op[0] = arith_opcode * 16 + size * 8 + 4;
- op[1] = reg($8) * 16 + 8 + reg_indirect($3);
- op[2] = ($5 >= 0) ? $5 : 256 + $5;
- } else {
- $$ = 4;
- op[0] = arith_opcode * 16 + size * 8 + 5;
- op[1] = reg($8) * 16 + 8 + reg_indirect($3);
- op[2] = ($5 >= 0) ? msb($5) : msb(65536 + $5);
- op[3] = ($5 >= 0) ? lsb($5) : lsb(65536 + $5);
- }
- }
-| arith_inst REG ',' '[' REG '+' ']' {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = arith_opcode * 16 + size * 8 + 3;
- op[1] = reg($2) * 16 + reg_indirect($5);
- }
-| arith_inst '[' REG '+' ']' ',' REG {
- $$ = 2;
- size = find_size1(inst_size, $7);
- op[0] = arith_opcode * 16 + size * 8 + 3;
- op[1] = reg($7) * 16 + 8 + reg_indirect($3);
- }
-| arith_inst expr ',' REG {
- $$ = 3;
- size = find_size1(inst_size, $4);
- op[0] = arith_opcode * 16 + size * 8 + 6;
- op[1] = reg($4) * 16 + 8 + msb(direct_addr($2));
- op[2] = lsb(direct_addr($2));
- }
-| arith_inst REG ',' expr {
- $$ = 3;
- size = find_size1(inst_size, $2);
- op[0] = arith_opcode * 16 + size * 8 + 6;
- op[1] = reg($2) * 16 + msb(direct_addr($4));
- op[2] = lsb(direct_addr($4));
- }
-| arith_inst REG ',' '#' expr {
- size = find_size1(inst_size, $2);
- if (size == SIZE8) {
- $$ = 3;
- op[0] = 0x91;
- op[1] = reg($2) * 16 + arith_opcode;
- op[2] = imm_data8($5);
- } else {
- $$ = 4;
- op[0] = 0x99;
- op[1] = reg($2) * 16 + arith_opcode;
- op[2] = msb(imm_data16($5));
- op[3] = lsb(imm_data16($5));
- }
- }
-| arith_inst '[' REG ']' ',' '#' expr {
- size = find_size0(inst_size);
- if (size == SIZE8) {
- $$ = 3;
- op[0] = 0x92;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = imm_data8($7);
- } else {
- $$ = 4;
- op[0] = 0x9A;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = msb(imm_data16($7));
- op[3] = lsb(imm_data16($7));
- }
- }
-| arith_inst '[' REG '+' ']' ',' '#' expr {
- size = find_size0(inst_size);
- if (size == SIZE8) {
- $$ = 3;
- op[0] = 0x93;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = imm_data8($8);
- } else {
- $$ = 4;
- op[0] = 0x9B;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = msb(imm_data16($8));
- op[3] = lsb(imm_data16($8));
- }
- }
-| arith_inst '[' REG '+' expr ']' ',' '#' expr {
- size = find_size0(inst_size);
- if ($5 >= -128 && $5 <= 127) {
- if (size == SIZE8) {
- $$ = 4;
- op[0] = 0x94;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = ($5 >= 0) ? $5 : 256 + $5;
- op[3] = imm_data8($9);
- } else {
- $$ = 5;
- op[0] = 0x9C;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = ($5 >= 0) ? $5 : 256 + $5;
- op[3] = msb(imm_data16($9));
- op[4] = lsb(imm_data16($9));
- }
- } else {
- if (size == SIZE8) {
- $$ = 5;
- op[0] = 0x95;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = ($5 >= 0) ? msb($5) : msb(65536 + $5);
- op[3] = ($5 >= 0) ? lsb($5) : lsb(65536 + $5);
- op[4] = imm_data8($9);
- } else {
- $$ = 6;
- op[0] = 0x9D;
- op[1] = reg_indirect($3) * 16 + arith_opcode;
- op[2] = ($5 >= 0) ? msb($5) : msb(65536 + $5);
- op[3] = ($5 >= 0) ? lsb($5) : lsb(65536 + $5);
- op[4] = msb(imm_data16($9));
- op[5] = lsb(imm_data16($9));
- }
- }
- }
-| arith_inst expr ',' '#' expr {
- size = find_size0(inst_size);
- if (size == SIZE8) {
- $$ = 4;
- op[0] = 0x96;
- op[1] = msb(direct_addr($2)) * 16 + arith_opcode;
- op[2] = lsb(direct_addr($2));
- op[3] = imm_data8($5);
- } else {
- $$ = 5;
- op[0] = 0x9E;
- op[1] = msb(direct_addr($2)) * 16 + arith_opcode;
- op[2] = lsb(direct_addr($2));
- op[3] = msb(imm_data16($5));
- op[4] = lsb(imm_data16($5));
- }
- }
-
-/* the next 8 instructions are MOV, but because MOV was used in the */
-/* arith_inst group, it will cause a shift/reduce conflict if used */
-/* directly below... so we're forced to use arith_inst and then */
-/* add a bit of code to make sure it was MOV and not the other ones */
-
-| arith_inst '[' REG '+' ']' ',' '[' REG '+' ']' {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (1)");
- size = find_size0(inst_size);
- $$ = 2;
- op[0] = 0x90 + size * 8;
- op[1] = reg_indirect($3) * 16 + reg_indirect($8);
- }
-| arith_inst expr ',' '[' REG ']' {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (2)");
- size = find_size0(inst_size);
- $$ = 3;
- op[0] = 0xA0 + size * 8;
- op[1] = 128 + reg_indirect($5) * 16 + msb(direct_addr($2));
- op[2] = lsb(direct_addr($2));
- }
-| arith_inst '[' REG ']' ',' expr {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (3)");
- size = find_size0(inst_size);
- $$ = 3;
- op[0] = 0xA0 + size * 8;
- op[1] = reg_indirect($3) * 16 + msb(direct_addr($6));
- op[2] = lsb(direct_addr($6));
- }
-| arith_inst expr ',' expr {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (4)");
- size = find_size0(inst_size);
- $$ = 4;
- op[0] = 0x97 + size * 8;
- op[1] = msb(direct_addr($2)) * 16 + msb(direct_addr($4));
- op[2] = lsb(direct_addr($2));
- op[3] = lsb(direct_addr($4));
- }
-| arith_inst REG ',' USP {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (5)");
- $$ = 2;
- op[0] = 0x90;
- op[1] = reg($2) * 16 + 15;
- }
-| arith_inst USP ',' REG {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (6)");
- $$ = 2;
- op[0] = 0x98;
- op[1] = reg($4) * 16 + 15;
- }
-| arith_inst C ',' bit {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (7)");
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x20 + msb(bit_addr($4));
- op[2] = lsb(bit_addr($4));
- }
-| arith_inst bit ',' C {
- /* this addr mode is only valid for MOV */
- if (arith_opcode != 8) error("Addr mode only valid for MOV (8)");
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x30 + msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- }
-
-| MOVC REG ',' '[' REG '+' ']' {
- size = find_size1(inst_size, $2);
- $$ = 2;
- op[0] = 0x80 + size * 8;
- op[1] = reg($2) * 16 + reg_indirect($5);
- }
-| MOVC A ',' '[' A '+' DPTR ']' {
- $$ = 2;
- op[0] = 0x90;
- op[1] = 0x4E;
- }
-| MOVC A ',' '[' A '+' PC ']' {
- $$ = 2;
- op[0] = 0x90;
- op[1] = 0x4C;
- }
-| MOVX REG ',' '[' REG ']' {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0xA7 + size * 8;
- op[1] = reg($2) * 16 + reg_indirect($5);
- }
-| MOVX '[' REG ']' ',' REG {
- $$ = 2;
- size = find_size1(inst_size, $6);
- op[0] = 0xA7 + size * 8;
- op[1] = reg($6) * 16 + 8 + reg_indirect($3);
- }
-| XCH REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- op[0] = 0x60 + size * 8;
- op[1] = reg($2) * 16 + reg($4);
- }
-| XCH REG ',' '[' REG ']' {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0x50 + size * 8;
- op[1] = reg($2) * 16 + reg_indirect($5);
- }
-| XCH REG ',' expr {
- $$ = 3;
- size = find_size1(inst_size, $2);
- op[0] = 0xA0 + size * 8;
- op[1] = reg($2) * 16 + msb(direct_addr($4));
- op[2] = lsb(direct_addr($4));
- }
-| short_data_inst REG ',' '#' expr {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = short_opcode + size * 8 + 1;
- op[1] = reg($2) * 16 + imm_data4_signed($5);
- }
-| short_data_inst '[' REG ']' ',' '#' expr {
- $$ = 2;
- size = find_size0(inst_size);
- op[0] = short_opcode + size * 8 + 2;
- op[1] = reg_indirect($3) * 16 + imm_data4_signed($7);
- }
-| short_data_inst '[' REG '+' ']' ',' '#' expr {
- $$ = 2;
- size = find_size0(inst_size);
- op[0] = short_opcode + size * 8 + 3;
- op[1] = reg_indirect($3) * 16 + imm_data4_signed($8);
- }
-| short_data_inst '[' REG '+' expr ']' ',' '#' expr {
- size = find_size0(inst_size);
- if ($5 >= -128 && $5 <= 127) {
- $$ = 3;
- op[0] = short_opcode + size * 8 + 4;
- op[1] = reg_indirect($3) * 16 + imm_data4_signed($9);
- op[2] = op[2] = ($5 >= 0) ? $5 : 256 + $5;
- } else {
- $$ = 4;
- op[0] = short_opcode + size * 8 + 5;
- op[1] = reg_indirect($3) * 16 + imm_data4_signed($9);
- op[2] = ($5 >= 0) ? msb($5) : msb(65536 + $5);
- op[3] = ($5 >= 0) ? lsb($5) : lsb(65536 + $5);
- }
- }
-| short_data_inst expr ',' '#' expr {
- $$ = 3;
- size = find_size0(inst_size);
- op[0] = short_opcode + size * 8 + 6;
- op[1] = msb(direct_addr($2)) * 16 + imm_data4_signed($5);
- op[2] = lsb(direct_addr($2));
- }
-
-
-
-| ANL C ',' bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x40 + msb(bit_addr($4));
- op[2] = lsb(bit_addr($4));
- }
-| ANL C ',' '/' bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x50 + msb(bit_addr($5));
- op[2] = lsb(bit_addr($5));
- }
-
-| ORL C ',' bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x60 + msb(bit_addr($4));
- op[2] = lsb(bit_addr($4));
- }
-| ORL C ',' '/' bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x70 + msb(bit_addr($5));
- op[2] = lsb(bit_addr($5));
- }
-| CLR bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- }
-| SETB bit {
- $$ = 3;
- op[0] = 0x08;
- op[1] = 0x10 + msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- }
-| logical_shift_inst REG ',' REG {
- size = find_size1(inst_size, $2);
- if (find_size_reg($4) != SIZE8)
- error("Second register in logical shift must be byte size");
- $$ = 2;
- op[0] = shift_reg_opcode;
- switch (size) {
- case SIZE8: op[0] += 0; break;
- case SIZE16: op[0] += 8; break;
- case SIZE32: op[0] += 12; break;
- }
- op[1] = reg($2) * 16 + reg($4);
- }
-| logical_shift_inst REG ',' '#' expr {
- size = find_size1(inst_size, $2);
- $$ = 2;
- if (shift_imm_opcode == -1)
- error("NORM may not use a constant");
- op[0] = shift_imm_opcode;
- switch (size) {
- case SIZE8: op[0] += 0; break;
- case SIZE16: op[0] += 8; break;
- case SIZE32: op[0] += 12; break;
- }
- switch (size) {
- case SIZE8:
- case SIZE16:
- op[1] = reg($2) * 16 + imm_data4_unsigned($5);
- break;
- case SIZE32:
- op[1] = (reg($2) / 2) * 32 + imm_data5_unsigned($5);
- break;
- }
- }
-| no_opperand_inst {
- $$ = num_op;
- op[0] = opcode0;
- op[1] = opcode1;
- }
-
-| TRAP '#' expr {
- $$ = 2;
- op[0] = 0xD6;
- op[1] = 0x30 + imm_data4_unsigned($3);
- }
-| CPL REG {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0x90 + size * 8;
- op[1] = reg($2) * 16 + 10;
- }
-| DA REG {
- $$ = 2;
- op[0] = 0x90;
- op[1] = reg($2) * 16 + 8;
- }
-| NEG REG {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0x90 + size * 8;
- op[1] = reg($2) * 16 + 11;
- }
-| SEXT REG {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0x90 + size * 8;
- op[1] = reg($2) * 16 + 9;
- }
-
-| rotate_inst REG ',' '#' expr {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = rotate_opcode + size * 8;
- op[1] = reg($2) * 16 + imm_data4_unsigned($5);
- }
-
-
-| LEA REG ',' REG '+' expr {
- if ($6 >= -128 && $6 <= 127) {
- $$ = 3;
- op[0] = 0x40;
- op[1] = reg($2) * 16 + reg_indirect($4);
- op[2] = ($6 >= 0) ? $6 : 256 + $6;
- } else {
- op[0] = 0x48;
- op[1] = reg($2) * 16 + reg_indirect($4);
- op[2] = ($6 >= 0) ? msb($6) : msb(65536 + $6);
- op[3] = ($6 >= 0) ? lsb($6) : lsb(65536 + $6);
- }
- }
-| stack_inst expr {
- $$ = 3;
- size = find_size0(inst_size);
- op[0] = msb(stack_addr_opcode) + size * 8;
- op[1] = lsb(stack_addr_opcode) + msb(direct_addr($2));
- op[2] = lsb(direct_addr($2));
- }
-| stack_inst rlist {
- $$ = 2;
- if (inst_size != UNKNOWN && find_size0(inst_size) != rlist_size)
- error("inst specifies different size than registers used");
- op[0] = stack_reg_opcode + rlist_reg_bank * 64 + rlist_size * 8;
- op[1] = rlist_bitmask;
- }
-
-
-| MUL REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- op[0] = 0xE6;
- op[1] = reg($2) * 16 + reg($4);
- }
-| MULU REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- if (size == SIZE8) {
- op[0] = 0xE0;
- op[1] = reg($2) * 16 + reg($4);
- } else {
- op[0] = 0xE4;
- op[1] = reg($2) * 16 + reg($4);
- }
- }
-| MUL REG ',' '#' expr {
- $$ = 2;
- size = find_size1(inst_size, $2);
- op[0] = 0xE9;
- op[1] = reg($2) + 8;
- op[2] = msb(imm_data16($5));
- op[3] = lsb(imm_data16($5));
- }
-| MULU REG ',' '#' expr {
- size = find_size2(inst_size, $2, $4);
- if (size == SIZE8) {
- $$ = 3;
- op[0] = 0xE8;
- op[1] = reg($2) * 16;
- op[2] = imm_data8($5);
- } else {
- $$ = 4;
- op[0] = 0xE9;
- op[1] = reg($2) * 16;
- op[2] = msb(imm_data16($5));
- op[3] = lsb(imm_data16($5));
- }
- }
-| DIV REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- switch (size) {
- case SIZE8:
- error("Singed DIV can't be 8 bit size"); break;
- case SIZE16:
- op[0] = 0xE7;
- op[1] = reg($2) * 16 + reg($4);
- break;
- case SIZE32:
- op[0] = 0xEF;
- op[1] = (reg($2) / 2) * 32 + reg($4);
- break;
- }
- }
-| DIVU REG ',' REG {
- $$ = 2;
- size = find_size2(inst_size, $2, $4);
- switch (size) {
- case SIZE8:
- op[0] = 0xE1;
- op[1] = reg($2) * 16 + reg($4);
- break;
- case SIZE16:
- op[0] = 0xE5;
- op[1] = reg($2) * 16 + reg($4);
- break;
- case SIZE32:
- op[0] = 0xED;
- op[1] = (reg($2) / 2) * 32 + reg($4);
- break;
- }
- }
-| DIV REG ',' '#' expr {
- size = find_size1(inst_size, $2);
- switch (size) {
- case SIZE8:
- error("Singed DIV can't be 8 bit size"); break;
- case SIZE16:
- $$ = 3;
- op[0] = 0xE8;
- op[1] = reg($2) * 16 + 11;
- op[2] = imm_data8($5);
- break;
- case SIZE32:
- $$ = 4;
- op[0] = 0xE9;
- op[1] = (reg($2) / 2) * 32 + 9;
- op[2] = msb(imm_data16($5));
- op[3] = lsb(imm_data16($5));
- break;
- }
- }
-| DIVU REG ',' '#' expr {
- size = find_size1(inst_size, $2);
- switch (size) {
- case SIZE8:
- $$ = 3;
- op[0] = 0xE8;
- op[1] = reg($2) * 16 + 1;
- op[2] = imm_data8($5);
- break;
- case SIZE16:
- $$ = 3;
- op[0] = 0xE8;
- op[1] = reg($2) * 16 + 3;
- op[2] = imm_data8($5);
- break;
- case SIZE32:
- $$ = 4;
- op[0] = 0xE9;
- op[1] = (reg($2) / 2) * 32 + 1;
- op[2] = msb(imm_data16($5));
- op[3] = lsb(imm_data16($5));
- break;
- }
- }
-| CALL '[' REG ']' {
- $$ = 2;
- op[0] = 0xC6;
- op[1] = reg($3);
- }
-| FCALL jmpaddr {
- $$ = 4;
- op[0] = 0xC4;
- op[1] = ($2 >> 8) & 255;
- op[2] = $2 & 255;
- op[3] = ($2 >> 16) & 255;
- }
-| FJMP jmpaddr {
- $$ = 4;
- op[0] = 0xD4;
- op[1] = ($2 >> 8) & 255;
- op[2] = $2 & 255;
- op[3] = ($2 >> 16) & 255;
- }
-| JMP '[' REG ']' {
- $$ = 2;
- op[0] = 0xD6;
- op[1] = 0x70 + reg_indirect($3);
- }
-| JMP '[' A '+' DPTR ']' {
- $$ = 2;
- op[0] = 0xD6;
- op[1] = 0x46;
- }
-| JMP '[' '[' REG '+' ']' ']' {
- $$ = 2;
- op[0] = 0xD6;
- op[1] = 0x60 + reg_indirect($4);
- }
-
-| JMP jmpaddr {
- $$ = 3;
- op[0] = 0xD5;
- op[1] = msb(rel16(MEM_POS + $$, $2));
- op[2] = lsb(rel16(MEM_POS + $$, $2));
- }
-
-| CALL jmpaddr {
- $$ = 3;
- op[0] = 0xC5;
- op[1] = msb(rel16(MEM_POS + $$, $2));
- op[2] = lsb(rel16(MEM_POS + $$, $2));
- }
-| branch_inst jmpaddr {
- $$ = 2;
- op[0] = branch_opcode;
- op[1] = rel8(MEM_POS + $$, $2);
- }
-| CJNE REG ',' expr ',' jmpaddr {
- $$ = 4;
- size = find_size1(inst_size, $2);
- op[0] = 0xE2 + size * 8;
- op[1] = reg($2) * 16 + msb(direct_addr($4));
- op[2] = lsb(direct_addr($4));
- op[3] = rel8(MEM_POS + $$, $6);
- }
-| CJNE REG ',' '#' expr ',' jmpaddr {
- size = find_size1(inst_size, $2);
- if (size == SIZE8) {
- $$ = 4;
- op[0] = 0xE3;
- op[1] = reg($2) * 16;
- op[2] = rel8(MEM_POS + $$, $7);
- op[3] = imm_data8($5);
- } else {
- $$ = 5;
- op[0] = 0xEB;
- op[1] = reg($2) * 16;
- op[2] = rel8(MEM_POS + $$, $7);
- op[3] = msb(imm_data16($5));
- op[4] = lsb(imm_data16($5));
- }
- }
-| CJNE '[' REG ']' ',' '#' expr ',' jmpaddr {
- size = find_size0(inst_size);
- if (size == SIZE8) {
- $$ = 4;
- op[0] = 0xE3;
- op[1] = reg_indirect($3) * 16 + 8;
- op[2] = rel8(MEM_POS + $$, $9);
- op[3] = imm_data8($7);
- } else {
- $$ = 5;
- op[0] = 0xEB;
- op[1] = reg_indirect($3) * 16 + 8;
- op[2] = rel8(MEM_POS + $$, $9);
- op[3] = msb(imm_data16($7));
- op[4] = lsb(imm_data16($7));
- }
- }
-| DJNZ REG ',' jmpaddr {
- $$ = 3;
- size = find_size1(inst_size, $2);
- op[0] = 0x87 + size * 8;
- op[1] = reg($2) * 16 + 8;
- op[2] = rel8(MEM_POS + $$, $4);
- }
-
-
-| DJNZ expr ',' jmpaddr {
- $$ = 4;
- size = find_size0(inst_size);
- op[0] = 0xE2 + size * 8;
- op[1] = msb(direct_addr($2)) + 8;
- op[2] = lsb(direct_addr($2));
- op[3] = rel8(MEM_POS + $$, $4);
- }
-
-| JB bit ',' jmpaddr {
- $$ = 4;
- op[0] = 0x97;
- op[1] = 0x80 + msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- op[3] = rel8(MEM_POS + $$, $4);
- }
-
-| JBC bit ',' jmpaddr {
- $$ = 4;
- op[0] = 0x97;
- op[1] = 0xC0 + msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- op[3] = rel8(MEM_POS + $$, $4);
- }
-
-| JNB bit ',' jmpaddr {
- $$ = 4;
- op[0] = 0x97;
- op[1] = 0xA0 + msb(bit_addr($2));
- op[2] = lsb(bit_addr($2));
- op[3] = rel8(MEM_POS + $$, $4);
- }
-
-
-arith_inst:
- ADD {arith_opcode = 0;}
- | ADDC {arith_opcode = 1;}
- | AND {arith_opcode = 5;}
- | CMP {arith_opcode = 4;}
- | MOV {arith_opcode = 8;}
- | OR {arith_opcode = 6;}
- | SUB {arith_opcode = 2;}
- | SUBB {arith_opcode = 3;}
- | XOR {arith_opcode = 7;}
-
-short_data_inst:
- ADDS {short_opcode = 0xA0;}
- | MOVS {short_opcode = 0xB0;}
-
-logical_shift_inst:
- ASL {shift_reg_opcode = 0xC1; shift_imm_opcode = 0xD1;}
- | ASR {shift_reg_opcode = 0xC2; shift_imm_opcode = 0xD2;}
- | LSR {shift_reg_opcode = 0xC0; shift_imm_opcode = 0xD0;}
- | NORM {shift_reg_opcode = 0xC3; shift_imm_opcode = -1;}
-
-rotate_inst:
- RL {rotate_opcode = 0xD3;}
- | RLC {rotate_opcode = 0xD7;}
- | RR {rotate_opcode = 0xD0;}
- | RRC {rotate_opcode = 0xD7;}
-
-stack_inst:
- POP {stack_addr_opcode = 0x8710; stack_reg_opcode = 0x27;}
- | POPU {stack_addr_opcode = 0x8700; stack_reg_opcode = 0x37;}
- | PUSH {stack_addr_opcode = 0x8730; stack_reg_opcode = 0x07;}
- | PUSHU {stack_addr_opcode = 0x8720; stack_reg_opcode = 0x17;}
-
-no_opperand_inst:
- BKPT {num_op = 1; opcode0 = 255; opcode1 = 0;}
- | NOP {num_op = 1; opcode0 = 0; opcode1 = 0;}
- | RESET {num_op = 2; opcode0 = 0xD6; opcode1 = 0x10;}
- | RET {num_op = 2; opcode0 = 0xD6; opcode1 = 0x80;}
- | RETI {num_op = 2; opcode0 = 0xD6; opcode1 = 0x90;}
-
-branch_inst:
- BCC {branch_opcode = 0xF0;}
- | BCS {branch_opcode = 0xF1;}
- | BEQ {branch_opcode = 0xF3;}
- | BG {branch_opcode = 0xF8;}
- | BGE {branch_opcode = 0xFA;}
- | BGT {branch_opcode = 0xFC;}
- | BL {branch_opcode = 0xF9;}
- | BLE {branch_opcode = 0xFD;}
- | BLT {branch_opcode = 0xFB;}
- | BMI {branch_opcode = 0xF7;}
- | BNE {branch_opcode = 0xF2;}
- | BNV {branch_opcode = 0xF4;}
- | BOV {branch_opcode = 0xF5;}
- | BPL {branch_opcode = 0xF6;}
- | BR {branch_opcode = 0xFE;}
- | JZ {branch_opcode = 0xEC;}
- | JNZ {branch_opcode = 0xEE;}
-
-
-
-%%
-
-
-int reg(int reg_spec)
-{
- return reg_spec & 15;
-}
-
-int reg_indirect(int reg_spec)
-{
- if (reg_spec & BYTE_REG)
- error("Indirect addressing may not use byte registers");
- if ((reg_spec & 15) > 7)
- error("Only R0 through R7 may be used for indirect addr");
- return reg_spec & 7;
-}
-
-int rel16(int pos, int dest)
-{
- int rel;
-
- if (!p3) return 0; /* don't bother unless writing code */
- if (dest & (BRANCH_SPACING - 1))
- error("Attempt to jump to unaligned location");
- pos &= ~(BRANCH_SPACING - 1);
- rel = (dest - pos) / BRANCH_SPACING;
- if (rel < -32768 || rel > 32767)
- error("Attempt to jump out of 16 bit relative range");
- if (rel < 0) rel += 65536;
- return rel;
-}
-
-int rel8(int pos, int dest)
-{
- int rel;
-
- if (!p3) return 0; /* don't bother unless writing code */
- if (dest & (BRANCH_SPACING - 1))
- error("Attempt to jump to unaligned location");
- pos &= ~(BRANCH_SPACING - 1);
- rel = (dest - pos) / BRANCH_SPACING;
- if (rel < -128 || rel > 127)
- error("Attempt to jump out of 16 bit relative range");
- if (rel < 0) rel += 256;
- return rel;
-}
-
-int msb(int value)
-{
- return (value >> 8) & 255;
-}
-
-int lsb(int value)
-{
- return value & 255;
-}
-
-int direct_addr(int value)
-{
- char buf[250];
-
- if (value < 0 || value > 2047) {
- sprintf(buf, "illegal value (%d) for direct address", value);
- error(buf);
- }
- return value;
-}
-
-int imm_data4_signed(int value)
-{
- if (value < -8 || value > 7)
- error("illegal 4 bit (signed) value");
- if (value >= 0) return value;
- else return (16 + value);
-}
-
-int imm_data4_unsigned(int value)
-{
- if (value < 0 || value > 15)
- error("illegal 4 bit (unsigned) value");
- return value;
-}
-
-int imm_data5_unsigned(int value)
-{
- if (value < 0 || value > 31)
- error("illegal 5 bit (unsigned) value");
- return value;
-}
-
-int imm_data8(int value)
-{
- if (value < -128 || value > 255)
- error("illegal 8 bit value");
- if (value >= 0) return value;
- else return (256 + value);
-}
-
-int imm_data16(int value)
-{
- if (value < -32728 || value > 65535)
- error("illegal 16 bit value");
- if (value >= 0) return value;
- else return (65536 + value);
-}
-
-int bit_addr(int value)
-{
- if (value < 0 || value > 1023) {
- fprintf(stderr, "bad bit addr of 0x%04X (%d dec)\n",
- value, value);
- error("illegal bit address");
- }
- return value;
-}
-
-
-int find_size_reg(int op1spec)
-{
- int op1size=UNKNOWN;
-
- if (op1spec & BYTE_REG) op1size = SIZE8;
- if (op1spec & WORD_REG) op1size = SIZE16;
- if (op1size == UNKNOWN)
- error("Register without implied size");
- return op1size;
-}
-
-int find_size0(int isize)
-{
- if (isize == UNKNOWN)
- error("Can't determine data size from instruction");
- return isize;
-}
-
-int find_size1(int isize, int op1spec)
-{
- int op1size=UNKNOWN;
-
- if (op1spec & BYTE_REG) op1size = SIZE8;
- if (op1spec & WORD_REG) op1size = SIZE16;
- if (op1size == UNKNOWN)
- error("Register without implied size");
-
- if (isize == SIZE32 && op1size == SIZE16) return SIZE32;
- if (isize == UNKNOWN) return op1size;
- else {
- if (isize != op1size)
- error("data size of register and inst don't agree");
- return isize;
- }
-}
-
-int find_size2(int isize, int op1spec, int op2spec)
-{
- int op1size=UNKNOWN, op2size=UNKNOWN;
-
- if (op1spec & BYTE_REG) op1size = SIZE8;
- if (op1spec & WORD_REG) op1size = SIZE16;
- if (op1size == UNKNOWN)
- error("Register without implied size");
- if (op2spec & BYTE_REG) op2size = SIZE8;
- if (op2spec & WORD_REG) op2size = SIZE16;
- if (op1size == UNKNOWN)
- error("Register without implied size");
-
- if (op1size != op2size)
- error("data sizes of two registers don't agree");
- if (isize == UNKNOWN) return op1size;
- else {
- if (isize != op1size)
- error("data size of registers and inst don't agree");
- return isize;
- }
-}
-
-
-int yyerror(char *s)
-{
- if (yytext[0] >= 32) {
- fprintf(stderr, "%s near '%s', line %d\n",
- s, yytext, lineno);
- } else {
- fprintf(stderr, "%s, line %d\n", s, lineno - 1);
- }
- return 0;
-}
-
-void error(char *s)
-{
- yyerror(s);
- exit(1);
-}
-
-int yywrap()
-{
- return 1;
-}
projects / fw / sdcc / blobdiff