ref: d8e8b796e7aa15956f1e648edbdc9ab6f7edb555
dir: /src/asm/parser.y/
/*
* This file is part of RGBDS.
*
* Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
*
* SPDX-License-Identifier: MIT
*/
%{
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "asm/asm.h"
#include "asm/charmap.h"
#include "asm/fstack.h"
#include "asm/lexer.h"
#include "asm/macro.h"
#include "asm/main.h"
#include "asm/mymath.h"
#include "asm/output.h"
#include "asm/rpn.h"
#include "asm/section.h"
#include "asm/symbol.h"
#include "asm/util.h"
#include "asm/warning.h"
#include "extern/utf8decoder.h"
#include "linkdefs.h"
#include "platform.h" // strncasecmp, strdup
uint32_t nListCountEmpty;
int32_t nPCOffset;
bool executeElseBlock; /* If this is set, ELIFs cannot be executed anymore */
static void upperstring(char *dest, char const *src)
{
while (*src)
*dest++ = toupper(*src++);
*dest = '\0';
}
static void lowerstring(char *dest, char const *src)
{
while (*src)
*dest++ = tolower(*src++);
*dest = '\0';
}
static uint32_t str2int2(uint8_t *s, int32_t length)
{
int32_t i;
uint32_t r = 0;
i = length < 4 ? 0 : length - 4;
while (i < length) {
r <<= 8;
r |= s[i];
i++;
}
return r;
}
static char *strrstr(char *s1, char *s2)
{
size_t len1 = strlen(s1);
size_t len2 = strlen(s2);
if (len2 > len1)
return NULL;
for (char *p = s1 + len1 - len2; p >= s1; p--)
if (!strncmp(p, s2, len2))
return p;
return NULL;
}
static size_t strlenUTF8(const char *s)
{
size_t len = 0;
uint32_t state = 0;
uint32_t codep = 0;
while (*s) {
switch (decode(&state, &codep, *s)) {
case 1:
fatalerror("STRLEN: Invalid UTF-8 character\n");
break;
case 0:
len++;
break;
}
s++;
}
/* Check for partial code point. */
if (state != 0)
fatalerror("STRLEN: Invalid UTF-8 character\n");
return len;
}
static void strsubUTF8(char *dest, const char *src, uint32_t pos, uint32_t len)
{
size_t srcIndex = 0;
size_t destIndex = 0;
uint32_t state = 0;
uint32_t codep = 0;
uint32_t curPos = 1;
uint32_t curLen = 0;
if (pos < 1) {
warning(WARNING_BUILTIN_ARG, "STRSUB: Position starts at 1\n");
pos = 1;
}
/* Advance to starting position in source string. */
while (src[srcIndex] && curPos < pos) {
switch (decode(&state, &codep, src[srcIndex])) {
case 1:
fatalerror("STRSUB: Invalid UTF-8 character\n");
break;
case 0:
curPos++;
break;
}
srcIndex++;
}
if (!src[srcIndex] && len)
warning(WARNING_BUILTIN_ARG,
"STRSUB: Position %lu is past the end of the string\n",
(unsigned long)pos);
/* Copy from source to destination. */
while (src[srcIndex] && destIndex < MAXSTRLEN && curLen < len) {
switch (decode(&state, &codep, src[srcIndex])) {
case 1:
fatalerror("STRSUB: Invalid UTF-8 character\n");
break;
case 0:
curLen++;
break;
}
dest[destIndex++] = src[srcIndex++];
}
if (curLen < len)
warning(WARNING_BUILTIN_ARG, "STRSUB: Length too big: %lu\n", (unsigned long)len);
/* Check for partial code point. */
if (state != 0)
fatalerror("STRSUB: Invalid UTF-8 character\n");
dest[destIndex] = 0;
}
static inline void failAssert(enum AssertionType type)
{
switch (type) {
case ASSERT_FATAL:
fatalerror("Assertion failed\n");
case ASSERT_ERROR:
error("Assertion failed\n");
break;
case ASSERT_WARN:
warning(WARNING_ASSERT, "Assertion failed\n");
break;
}
}
static inline void failAssertMsg(enum AssertionType type, char const *msg)
{
switch (type) {
case ASSERT_FATAL:
fatalerror("Assertion failed: %s\n", msg);
case ASSERT_ERROR:
error("Assertion failed: %s\n", msg);
break;
case ASSERT_WARN:
warning(WARNING_ASSERT, "Assertion failed: %s\n", msg);
break;
}
}
#define yyerror(str) error(str "\n")
%}
%union
{
char tzSym[MAXSYMLEN + 1];
char tzString[MAXSTRLEN + 1];
struct Expression sVal;
int32_t nConstValue;
enum SectionModifier sectMod;
struct SectionSpec sectSpec;
struct MacroArgs *macroArg;
enum AssertionType assertType;
}
%type <sVal> relocexpr
%type <sVal> relocexpr_no_str
%type <nConstValue> const
%type <nConstValue> uconst
%type <nConstValue> rs_uconst
%type <nConstValue> const_3bit
%type <sVal> reloc_8bit
%type <sVal> reloc_8bit_no_str
%type <sVal> reloc_16bit
%type <sVal> reloc_16bit_no_str
%type <nConstValue> sectiontype
%type <tzString> string
%type <tzString> strcat_args
%type <nConstValue> sectorg
%type <sectSpec> sectattrs
%token <nConstValue> T_NUMBER
%token <tzString> T_STRING
%left T_COMMA
%left T_COLON
%left T_LBRACK
%left T_RBRACK
%left T_LPAREN
%left T_RPAREN
%left T_NEWLINE
%left T_OP_LOGICNOT
%left T_OP_LOGICOR T_OP_LOGICAND
%left T_OP_LOGICGT T_OP_LOGICLT T_OP_LOGICGE T_OP_LOGICLE T_OP_LOGICNE T_OP_LOGICEQU
%left T_OP_ADD T_OP_SUB
%left T_OP_OR T_OP_XOR T_OP_AND
%left T_OP_SHL T_OP_SHR
%left T_OP_MUL T_OP_DIV T_OP_MOD
%left T_OP_NOT
%left T_OP_DEF
%left T_OP_BANK T_OP_ALIGN
%left T_OP_SIN
%left T_OP_COS
%left T_OP_TAN
%left T_OP_ASIN
%left T_OP_ACOS
%left T_OP_ATAN
%left T_OP_ATAN2
%left T_OP_FDIV
%left T_OP_FMUL
%left T_OP_ROUND
%left T_OP_CEIL
%left T_OP_FLOOR
%token T_OP_HIGH T_OP_LOW
%token T_OP_ISCONST
%left T_OP_STRCMP
%left T_OP_STRIN
%left T_OP_STRRIN
%left T_OP_STRSUB
%left T_OP_STRLEN
%left T_OP_STRCAT
%left T_OP_STRUPR
%left T_OP_STRLWR
%left NEG /* negation -- unary minus */
%token <tzSym> T_LABEL
%token <tzSym> T_ID
%token <tzSym> T_LOCAL_ID
%token <tzSym> T_ANON
%type <tzSym> scoped_id
%type <tzSym> scoped_anon_id
%token T_POP_EQU
%token T_POP_SET
%token T_POP_EQUAL
%token T_POP_EQUS
%token T_POP_INCLUDE T_POP_PRINTF T_POP_PRINTT T_POP_PRINTV T_POP_PRINTI
%token T_POP_IF T_POP_ELIF T_POP_ELSE T_POP_ENDC
%token T_POP_EXPORT T_POP_GLOBAL T_POP_XDEF
%token T_POP_DB T_POP_DS T_POP_DW T_POP_DL
%token T_POP_SECTION T_POP_FRAGMENT
%token T_POP_RB
%token T_POP_RW
%token T_POP_RL
%token T_POP_MACRO
%token T_POP_ENDM
%token T_POP_RSRESET T_POP_RSSET
%token T_POP_UNION T_POP_NEXTU T_POP_ENDU
%token T_POP_INCBIN T_POP_REPT
%token T_POP_CHARMAP
%token T_POP_NEWCHARMAP
%token T_POP_SETCHARMAP
%token T_POP_PUSHC
%token T_POP_POPC
%token T_POP_SHIFT
%token T_POP_ENDR
%token T_POP_LOAD T_POP_ENDL
%token T_POP_FAIL
%token T_POP_WARN
%token T_POP_FATAL
%token T_POP_ASSERT T_POP_STATIC_ASSERT
%token T_POP_PURGE
%token T_POP_POPS
%token T_POP_PUSHS
%token T_POP_POPO
%token T_POP_PUSHO
%token T_POP_OPT
%token T_SECT_WRAM0 T_SECT_VRAM T_SECT_ROMX T_SECT_ROM0 T_SECT_HRAM
%token T_SECT_WRAMX T_SECT_SRAM T_SECT_OAM
%type <sectMod> sectmod
%type <macroArg> macroargs
%token T_Z80_ADC T_Z80_ADD T_Z80_AND
%token T_Z80_BIT
%token T_Z80_CALL T_Z80_CCF T_Z80_CP T_Z80_CPL
%token T_Z80_DAA T_Z80_DEC T_Z80_DI
%token T_Z80_EI
%token T_Z80_HALT
%token T_Z80_INC
%token T_Z80_JP T_Z80_JR
%token T_Z80_LD
%token T_Z80_LDI
%token T_Z80_LDD
%token T_Z80_LDIO
%token T_Z80_NOP
%token T_Z80_OR
%token T_Z80_POP T_Z80_PUSH
%token T_Z80_RES T_Z80_RET T_Z80_RETI T_Z80_RST
%token T_Z80_RL T_Z80_RLA T_Z80_RLC T_Z80_RLCA
%token T_Z80_RR T_Z80_RRA T_Z80_RRC T_Z80_RRCA
%token T_Z80_SBC T_Z80_SCF T_Z80_STOP
%token T_Z80_SLA T_Z80_SRA T_Z80_SRL T_Z80_SUB T_Z80_SWAP
%token T_Z80_XOR
%token T_TOKEN_A T_TOKEN_B T_TOKEN_C T_TOKEN_D T_TOKEN_E T_TOKEN_H T_TOKEN_L
%token T_MODE_AF
%token T_MODE_BC
%token T_MODE_DE
%token T_MODE_SP
%token T_MODE_HW_C
%token T_MODE_HL T_MODE_HL_DEC T_MODE_HL_INC
%token T_CC_NZ T_CC_Z T_CC_NC
%type <nConstValue> reg_r
%type <nConstValue> reg_ss
%type <nConstValue> reg_rr
%type <nConstValue> reg_tt
%type <nConstValue> ccode
%type <sVal> op_a_n
%type <nConstValue> op_a_r
%type <nConstValue> op_hl_ss
%type <sVal> op_mem_ind
%type <assertType> assert_type
%start asmfile
%%
asmfile : lines;
/* Note: The lexer adds T_NEWLINE at the end of the input */
lines : /* empty */
| lines {
nListCountEmpty = 0;
nPCOffset = 0;
} line {
nTotalLines++;
}
;
line : label T_NEWLINE
| label cpu_command T_NEWLINE
| label macro T_NEWLINE
| label simple_pseudoop T_NEWLINE
| pseudoop T_NEWLINE
| conditional /* May not necessarily be followed by a newline, see below */
;
/*
* For "logistical" reasons, conditionals must manage newlines themselves.
* This is because we need to switch the lexer's mode *after* the newline has been read,
* and to avoid causing some grammar conflicts (token reducing is finicky).
* This is DEFINITELY one of the more FRAGILE parts of the codebase, handle with care.
*/
conditional : if
/* It's important that all of these require being at line start for `skipIfBlock` */
| elif
| else
| endc
;
if : T_POP_IF const T_NEWLINE {
nIFDepth++;
executeElseBlock = !$2;
if (executeElseBlock)
lexer_SetMode(LEXER_SKIP_TO_ELIF);
}
;
elif : T_POP_ELIF const T_NEWLINE {
if (nIFDepth <= 0)
fatalerror("Found ELIF outside an IF construct\n");
if (!executeElseBlock) {
lexer_SetMode(LEXER_SKIP_TO_ENDC);
} else {
executeElseBlock = !$2;
if (executeElseBlock)
lexer_SetMode(LEXER_SKIP_TO_ELIF);
}
}
;
else : T_POP_ELSE T_NEWLINE {
if (nIFDepth <= 0)
fatalerror("Found ELSE outside an IF construct\n");
if (!executeElseBlock)
lexer_SetMode(LEXER_SKIP_TO_ENDC);
}
;
endc : T_POP_ENDC T_NEWLINE {
if (nIFDepth <= 0)
fatalerror("Found ENDC outside an IF construct\n");
nIFDepth--;
executeElseBlock = false;
}
;
scoped_id : T_ID | T_LOCAL_ID;
scoped_anon_id : scoped_id | T_ANON;
label : /* empty */
| T_COLON {
sym_AddAnonLabel();
}
| T_LOCAL_ID {
sym_AddLocalLabel($1);
}
| T_LABEL {
warning(WARNING_OBSOLETE, "Non-local labels without a colon are deprecated\n");
sym_AddLabel($1);
}
| T_LOCAL_ID T_COLON {
sym_AddLocalLabel($1);
}
| T_LABEL T_COLON {
sym_AddLabel($1);
}
| T_LOCAL_ID T_COLON T_COLON {
sym_AddLocalLabel($1);
sym_Export($1);
}
| T_LABEL T_COLON T_COLON {
sym_AddLabel($1);
sym_Export($1);
}
;
macro : T_ID {
lexer_SetMode(LEXER_RAW);
} macroargs {
lexer_SetMode(LEXER_NORMAL);
fstk_RunMacro($1, $3);
}
;
macroargs : /* empty */ {
$$ = macro_NewArgs();
}
| T_STRING {
$$ = macro_NewArgs();
macro_AppendArg(&($$), strdup($1));
}
| macroargs T_COMMA T_STRING {
macro_AppendArg(&($$), strdup($3));
}
;
pseudoop : equ
| set
| rb
| rw
| rl
| equs
| macrodef
;
simple_pseudoop : include
| printf
| printt
| printv
| printi
| export
| db
| dw
| dl
| ds
| section
| rsreset
| rsset
| union
| nextu
| endu
| incbin
| charmap
| newcharmap
| setcharmap
| pushc
| popc
| load
| rept
| shift
| fail
| warn
| assert
| purge
| pops
| pushs
| popo
| pusho
| opt
| align
;
align : T_OP_ALIGN uconst {
if ($2 > 16)
error("Alignment must be between 0 and 16, not %u\n", $2);
else
sect_AlignPC($2, 0);
}
| T_OP_ALIGN uconst T_COMMA uconst {
if ($2 > 16)
error("Alignment must be between 0 and 16, not %u\n", $2);
else if ($4 >= 1 << $2)
error("Offset must be between 0 and %u, not %u\n",
(1 << $2) - 1, $4);
else
sect_AlignPC($2, $4);
}
;
opt : T_POP_OPT {
lexer_SetMode(LEXER_RAW);
} opt_list {
lexer_SetMode(LEXER_NORMAL);
}
;
opt_list : opt_list_entry
| opt_list T_COMMA opt_list_entry
;
opt_list_entry : T_STRING { opt_Parse($1); }
;
popo : T_POP_POPO { opt_Pop(); }
;
pusho : T_POP_PUSHO { opt_Push(); }
;
pops : T_POP_POPS { out_PopSection(); }
;
pushs : T_POP_PUSHS { out_PushSection(); }
;
fail : T_POP_FAIL string { fatalerror("%s\n", $2); }
;
warn : T_POP_WARN string { warning(WARNING_USER, "%s\n", $2); }
;
assert_type : /* empty */ { $$ = ASSERT_ERROR; }
| T_POP_WARN T_COMMA { $$ = ASSERT_WARN; }
| T_POP_FAIL T_COMMA { $$ = ASSERT_ERROR; }
| T_POP_FATAL T_COMMA { $$ = ASSERT_FATAL; }
;
assert : T_POP_ASSERT assert_type relocexpr
{
if (!rpn_isKnown(&$3)) {
if (!out_CreateAssert($2, &$3, "",
sect_GetOutputOffset()))
error("Assertion creation failed: %s\n",
strerror(errno));
} else if ($3.nVal == 0) {
failAssert($2);
}
rpn_Free(&$3);
}
| T_POP_ASSERT assert_type relocexpr T_COMMA string
{
if (!rpn_isKnown(&$3)) {
if (!out_CreateAssert($2, &$3, $5,
sect_GetOutputOffset()))
error("Assertion creation failed: %s\n",
strerror(errno));
} else if ($3.nVal == 0) {
failAssertMsg($2, $5);
}
rpn_Free(&$3);
}
| T_POP_STATIC_ASSERT assert_type const
{
if ($3 == 0)
failAssert($2);
}
| T_POP_STATIC_ASSERT assert_type const T_COMMA string
{
if ($3 == 0)
failAssertMsg($2, $5);
}
;
shift : T_POP_SHIFT { macro_ShiftCurrentArgs(1); }
| T_POP_SHIFT const { macro_ShiftCurrentArgs($2); }
;
load : T_POP_LOAD string T_COMMA sectiontype sectorg sectattrs {
out_SetLoadSection($2, $4, $5, &$6);
}
| T_POP_ENDL { out_EndLoadSection(); }
;
rept : T_POP_REPT uconst {
uint32_t nDefinitionLineNo = lexer_GetLineNo();
char *body;
size_t size;
lexer_CaptureRept(&body, &size);
fstk_RunRept($2, nDefinitionLineNo, body, size);
}
;
macrodef : T_LABEL T_COLON T_POP_MACRO {
int32_t nDefinitionLineNo = lexer_GetLineNo();
char *body;
size_t size;
lexer_CaptureMacroBody(&body, &size);
sym_AddMacro($1, nDefinitionLineNo, body, size);
}
;
equs : T_LABEL T_POP_EQUS string { sym_AddString($1, $3); }
;
rsset : T_POP_RSSET uconst { sym_AddSet("_RS", $2); }
;
rsreset : T_POP_RSRESET { sym_AddSet("_RS", 0); }
;
rs_uconst : /* empty */ {
$$ = 1;
}
| uconst
;
rl : T_LABEL T_POP_RL rs_uconst {
sym_AddEqu($1, sym_GetConstantValue("_RS"));
sym_AddSet("_RS", sym_GetConstantValue("_RS") + 4 * $3);
}
;
rw : T_LABEL T_POP_RW rs_uconst {
sym_AddEqu($1, sym_GetConstantValue("_RS"));
sym_AddSet("_RS", sym_GetConstantValue("_RS") + 2 * $3);
}
;
rb : T_LABEL T_POP_RB rs_uconst {
sym_AddEqu($1, sym_GetConstantValue("_RS"));
sym_AddSet("_RS", sym_GetConstantValue("_RS") + $3);
}
;
union : T_POP_UNION { sect_StartUnion(); }
;
nextu : T_POP_NEXTU { sect_NextUnionMember(); }
;
endu : T_POP_ENDU { sect_EndUnion(); }
;
ds : T_POP_DS uconst { out_Skip($2, true); }
| T_POP_DS uconst T_COMMA reloc_8bit {
out_RelBytes(&$4, $2);
}
;
/* Authorize empty entries if there is only one */
db : T_POP_DB constlist_8bit_entry T_COMMA constlist_8bit {
if (nListCountEmpty > 0)
warning(WARNING_EMPTY_ENTRY,
"Empty entry in list of 8-bit elements (treated as padding).\n");
}
| T_POP_DB constlist_8bit_entry
;
dw : T_POP_DW constlist_16bit_entry T_COMMA constlist_16bit {
if (nListCountEmpty > 0)
warning(WARNING_EMPTY_ENTRY,
"Empty entry in list of 16-bit elements (treated as padding).\n");
}
| T_POP_DW constlist_16bit_entry
;
dl : T_POP_DL constlist_32bit_entry T_COMMA constlist_32bit {
if (nListCountEmpty > 0)
warning(WARNING_EMPTY_ENTRY,
"Empty entry in list of 32-bit elements (treated as padding).\n");
}
| T_POP_DL constlist_32bit_entry
;
purge : T_POP_PURGE {
lexer_ToggleStringExpansion(false);
} purge_list {
lexer_ToggleStringExpansion(true);
}
;
purge_list : purge_list_entry
| purge_list T_COMMA purge_list_entry
;
purge_list_entry : scoped_id { sym_Purge($1); }
;
export : export_token export_list
;
export_token : T_POP_EXPORT
| T_POP_GLOBAL {
warning(WARNING_OBSOLETE,
"`GLOBAL` is a deprecated synonym for `EXPORT`\n");
}
| T_POP_XDEF {
warning(WARNING_OBSOLETE, "`XDEF` is a deprecated synonym for `EXPORT`\n");
}
;
export_list : export_list_entry
| export_list T_COMMA export_list_entry
;
export_list_entry : scoped_id { sym_Export($1); }
;
equ : T_LABEL T_POP_EQU const { sym_AddEqu($1, $3); }
;
set : T_LABEL T_POP_SET const { sym_AddSet($1, $3); }
| T_LABEL T_POP_EQUAL const { sym_AddSet($1, $3); }
;
include : T_POP_INCLUDE string {
fstk_RunInclude($2);
if (oFailedOnMissingInclude)
YYACCEPT;
}
;
incbin : T_POP_INCBIN string {
out_BinaryFile($2, 0);
if (oFailedOnMissingInclude)
YYACCEPT;
}
| T_POP_INCBIN string T_COMMA const {
out_BinaryFile($2, $4);
if (oFailedOnMissingInclude)
YYACCEPT;
}
| T_POP_INCBIN string T_COMMA const T_COMMA const {
out_BinaryFileSlice($2, $4, $6);
if (oFailedOnMissingInclude)
YYACCEPT;
}
;
charmap : T_POP_CHARMAP string T_COMMA const {
if ($4 < INT8_MIN || $4 > UINT8_MAX)
warning(WARNING_TRUNCATION, "Expression must be 8-bit\n");
charmap_Add($2, (uint8_t)$4);
}
;
newcharmap : T_POP_NEWCHARMAP T_ID { charmap_New($2, NULL); }
| T_POP_NEWCHARMAP T_ID T_COMMA T_ID { charmap_New($2, $4); }
;
setcharmap : T_POP_SETCHARMAP T_ID { charmap_Set($2); }
;
pushc : T_POP_PUSHC { charmap_Push(); }
;
popc : T_POP_POPC { charmap_Pop(); }
;
printt : T_POP_PRINTT string { printf("%s", $2); }
;
printv : T_POP_PRINTV const { printf("$%" PRIX32, $2); }
;
printi : T_POP_PRINTI const { printf("%" PRId32, $2); }
;
printf : T_POP_PRINTF const { math_Print($2); }
;
const_3bit : const {
int32_t value = $1;
if ((value < 0) || (value > 7)) {
error("Immediate value must be 3-bit\n");
$$ = 0;
} else {
$$ = value & 0x7;
}
}
;
constlist_8bit : constlist_8bit_entry
| constlist_8bit T_COMMA constlist_8bit_entry
;
constlist_8bit_entry : /* empty */ {
out_Skip(1, false);
nListCountEmpty++;
}
| reloc_8bit_no_str { out_RelByte(&$1); }
| string {
uint8_t *output = malloc(strlen($1)); /* Cannot be larger than that */
int32_t length = charmap_Convert($1, output);
out_AbsByteGroup(output, length);
free(output);
}
;
constlist_16bit : constlist_16bit_entry
| constlist_16bit T_COMMA constlist_16bit_entry
;
constlist_16bit_entry : /* empty */ {
out_Skip(2, false);
nListCountEmpty++;
}
| reloc_16bit_no_str { out_RelWord(&$1); }
| string {
uint8_t *output = malloc(strlen($1)); /* Cannot be larger than that */
int32_t length = charmap_Convert($1, output);
out_AbsWordGroup(output, length);
free(output);
}
;
constlist_32bit : constlist_32bit_entry
| constlist_32bit T_COMMA constlist_32bit_entry
;
constlist_32bit_entry : /* empty */ {
out_Skip(4, false);
nListCountEmpty++;
}
| relocexpr_no_str { out_RelLong(&$1); }
| string {
uint8_t *output = malloc(strlen($1)); /* Cannot be larger than that */
int32_t length = charmap_Convert($1, output);
out_AbsLongGroup(output, length);
free(output);
}
;
reloc_8bit : relocexpr {
if(rpn_isKnown(&$1)
&& ($1.nVal < -128 || $1.nVal > 255))
warning(WARNING_TRUNCATION, "Expression must be 8-bit\n");
$$ = $1;
}
;
reloc_8bit_no_str : relocexpr_no_str {
if(rpn_isKnown(&$1)
&& ($1.nVal < -128 || $1.nVal > 255))
warning(WARNING_TRUNCATION, "Expression must be 8-bit\n");
$$ = $1;
}
;
reloc_16bit : relocexpr {
if (rpn_isKnown(&$1)
&& ($1.nVal < -32768 || $1.nVal > 65535))
warning(WARNING_TRUNCATION, "Expression must be 16-bit\n");
$$ = $1;
}
;
reloc_16bit_no_str : relocexpr_no_str {
if (rpn_isKnown(&$1)
&& ($1.nVal < -32768 || $1.nVal > 65535))
warning(WARNING_TRUNCATION, "Expression must be 16-bit\n");
$$ = $1;
}
;
relocexpr : relocexpr_no_str
| string {
uint8_t *output = malloc(strlen($1)); /* Cannot be longer than that */
int32_t length = charmap_Convert($1, output);
uint32_t r = str2int2(output, length);
free(output);
rpn_Number(&$$, r);
}
;
relocexpr_no_str : scoped_anon_id { rpn_Symbol(&$$, $1); }
| T_NUMBER { rpn_Number(&$$, $1); }
| T_OP_LOGICNOT relocexpr %prec NEG {
rpn_LOGNOT(&$$, &$2);
}
| relocexpr T_OP_LOGICOR relocexpr {
rpn_BinaryOp(RPN_LOGOR, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICAND relocexpr {
rpn_BinaryOp(RPN_LOGAND, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICEQU relocexpr {
rpn_BinaryOp(RPN_LOGEQ, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICGT relocexpr {
rpn_BinaryOp(RPN_LOGGT, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICLT relocexpr {
rpn_BinaryOp(RPN_LOGLT, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICGE relocexpr {
rpn_BinaryOp(RPN_LOGGE, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICLE relocexpr {
rpn_BinaryOp(RPN_LOGLE, &$$, &$1, &$3);
}
| relocexpr T_OP_LOGICNE relocexpr {
rpn_BinaryOp(RPN_LOGNE, &$$, &$1, &$3);
}
| relocexpr T_OP_ADD relocexpr {
rpn_BinaryOp(RPN_ADD, &$$, &$1, &$3);
}
| relocexpr T_OP_SUB relocexpr {
rpn_BinaryOp(RPN_SUB, &$$, &$1, &$3);
}
| relocexpr T_OP_XOR relocexpr {
rpn_BinaryOp(RPN_XOR, &$$, &$1, &$3);
}
| relocexpr T_OP_OR relocexpr {
rpn_BinaryOp(RPN_OR, &$$, &$1, &$3);
}
| relocexpr T_OP_AND relocexpr {
rpn_BinaryOp(RPN_AND, &$$, &$1, &$3);
}
| relocexpr T_OP_SHL relocexpr {
rpn_BinaryOp(RPN_SHL, &$$, &$1, &$3);
}
| relocexpr T_OP_SHR relocexpr {
rpn_BinaryOp(RPN_SHR, &$$, &$1, &$3);
}
| relocexpr T_OP_MUL relocexpr {
rpn_BinaryOp(RPN_MUL, &$$, &$1, &$3);
}
| relocexpr T_OP_DIV relocexpr {
rpn_BinaryOp(RPN_DIV, &$$, &$1, &$3);
}
| relocexpr T_OP_MOD relocexpr {
rpn_BinaryOp(RPN_MOD, &$$, &$1, &$3);
}
| T_OP_ADD relocexpr %prec NEG { $$ = $2; }
| T_OP_SUB relocexpr %prec NEG { rpn_UNNEG(&$$, &$2); }
| T_OP_NOT relocexpr %prec NEG { rpn_UNNOT(&$$, &$2); }
| T_OP_HIGH T_LPAREN relocexpr T_RPAREN { rpn_HIGH(&$$, &$3); }
| T_OP_LOW T_LPAREN relocexpr T_RPAREN { rpn_LOW(&$$, &$3); }
| T_OP_ISCONST T_LPAREN relocexpr T_RPAREN{ rpn_ISCONST(&$$, &$3); }
| T_OP_BANK T_LPAREN scoped_anon_id T_RPAREN {
/* '@' is also a T_ID, it is handled here. */
rpn_BankSymbol(&$$, $3);
}
| T_OP_BANK T_LPAREN string T_RPAREN { rpn_BankSection(&$$, $3); }
| T_OP_DEF {
lexer_ToggleStringExpansion(false);
} T_LPAREN scoped_anon_id T_RPAREN {
struct Symbol const *sym = sym_FindScopedSymbol($4);
rpn_Number(&$$, !!sym);
lexer_ToggleStringExpansion(true);
}
| T_OP_ROUND T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Round($3));
}
| T_OP_CEIL T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Ceil($3));
}
| T_OP_FLOOR T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Floor($3));
}
| T_OP_FDIV T_LPAREN const T_COMMA const T_RPAREN {
rpn_Number(&$$, math_Div($3, $5));
}
| T_OP_FMUL T_LPAREN const T_COMMA const T_RPAREN {
rpn_Number(&$$, math_Mul($3, $5));
}
| T_OP_SIN T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Sin($3));
}
| T_OP_COS T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Cos($3));
}
| T_OP_TAN T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_Tan($3));
}
| T_OP_ASIN T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_ASin($3));
}
| T_OP_ACOS T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_ACos($3));
}
| T_OP_ATAN T_LPAREN const T_RPAREN {
rpn_Number(&$$, math_ATan($3));
}
| T_OP_ATAN2 T_LPAREN const T_COMMA const T_RPAREN {
rpn_Number(&$$, math_ATan2($3, $5));
}
| T_OP_STRCMP T_LPAREN string T_COMMA string T_RPAREN {
rpn_Number(&$$, strcmp($3, $5));
}
| T_OP_STRIN T_LPAREN string T_COMMA string T_RPAREN {
char *p = strstr($3, $5);
rpn_Number(&$$, p ? p - $3 + 1 : 0);
}
| T_OP_STRRIN T_LPAREN string T_COMMA string T_RPAREN {
char *p = strrstr($3, $5);
rpn_Number(&$$, p ? p - $3 + 1 : 0);
}
| T_OP_STRLEN T_LPAREN string T_RPAREN {
rpn_Number(&$$, strlenUTF8($3));
}
| T_LPAREN relocexpr T_RPAREN { $$ = $2; }
;
uconst : const {
$$ = $1;
if ($$ < 0)
fatalerror("Constant mustn't be negative: %d\n",
$1);
}
;
const : relocexpr {
if (!rpn_isKnown(&$1)) {
error("Expected constant expression: %s\n",
$1.reason);
$$ = 0;
} else {
$$ = $1.nVal;
}
}
;
string : T_STRING
| T_OP_STRSUB T_LPAREN string T_COMMA uconst T_COMMA uconst T_RPAREN {
strsubUTF8($$, $3, $5, $7);
}
| T_OP_STRCAT T_LPAREN T_RPAREN {
$$[0] = '\0';
}
| T_OP_STRCAT T_LPAREN strcat_args T_RPAREN {
strcpy($$, $3);
}
| T_OP_STRUPR T_LPAREN string T_RPAREN {
upperstring($$, $3);
}
| T_OP_STRLWR T_LPAREN string T_RPAREN {
lowerstring($$, $3);
}
;
strcat_args : string
| strcat_args T_COMMA string {
if (snprintf($$, MAXSTRLEN + 1, "%s%s", $1, $3) > MAXSTRLEN)
warning(WARNING_LONG_STR, "STRCAT: String too long '%s%s'\n",
$1, $3);
}
;
section : T_POP_SECTION sectmod string T_COMMA sectiontype sectorg sectattrs {
out_NewSection($3, $5, $6, &$7, $2);
}
;
sectmod : /* empty */ { $$ = SECTION_NORMAL; }
| T_POP_UNION { $$ = SECTION_UNION; }
| T_POP_FRAGMENT{ $$ = SECTION_FRAGMENT; }
;
sectiontype : T_SECT_WRAM0 { $$ = SECTTYPE_WRAM0; }
| T_SECT_VRAM { $$ = SECTTYPE_VRAM; }
| T_SECT_ROMX { $$ = SECTTYPE_ROMX; }
| T_SECT_ROM0 { $$ = SECTTYPE_ROM0; }
| T_SECT_HRAM { $$ = SECTTYPE_HRAM; }
| T_SECT_WRAMX { $$ = SECTTYPE_WRAMX; }
| T_SECT_SRAM { $$ = SECTTYPE_SRAM; }
| T_SECT_OAM { $$ = SECTTYPE_OAM; }
;
sectorg : /* empty */ { $$ = -1; }
| T_LBRACK uconst T_RBRACK {
if ($2 < 0 || $2 >= 0x10000) {
error("Address $%x is not 16-bit\n", $2);
$$ = -1;
} else {
$$ = $2;
}
}
;
sectattrs : /* empty */ {
$$.alignment = 0;
$$.alignOfs = 0;
$$.bank = -1;
}
| sectattrs T_COMMA T_OP_ALIGN T_LBRACK uconst T_RBRACK {
if ($5 > 16)
error("Alignment must be between 0 and 16, not %u\n", $5);
else
$$.alignment = $5;
}
| sectattrs T_COMMA T_OP_ALIGN T_LBRACK uconst T_COMMA uconst T_RBRACK {
if ($5 > 16) {
error("Alignment must be between 0 and 16, not %u\n", $5);
} else {
$$.alignment = $5;
if ($7 >= 1 << $$.alignment)
error("Alignment offset must not be greater than alignment (%u < %u)\n",
$7, 1 << $$.alignment);
else
$$.alignOfs = $7;
}
}
| sectattrs T_COMMA T_OP_BANK T_LBRACK uconst T_RBRACK {
/* We cannot check the validity of this now */
$$.bank = $5;
}
;
cpu_command : { nPCOffset = 1; } z80_adc
| { nPCOffset = 1; } z80_add
| { nPCOffset = 1; } z80_and
| { nPCOffset = 1; } z80_bit
| { nPCOffset = 1; } z80_call
| z80_ccf
| { nPCOffset = 1; } z80_cp
| z80_cpl
| z80_daa
| { nPCOffset = 1; } z80_dec
| z80_di
| z80_ei
| z80_halt
| z80_inc
| { nPCOffset = 1; } z80_jp
| { nPCOffset = 1; } z80_jr
| { nPCOffset = 1; } z80_ld
| z80_ldd
| z80_ldi
| { nPCOffset = 1; } z80_ldio
| z80_nop
| { nPCOffset = 1; } z80_or
| z80_pop
| z80_push
| { nPCOffset = 1; } z80_res
| z80_ret
| z80_reti
| z80_rl
| z80_rla
| z80_rlc
| z80_rlca
| z80_rr
| z80_rra
| z80_rrc
| z80_rrca
| /*{ nPCOffset = 0; }*/ z80_rst
| { nPCOffset = 1; } z80_sbc
| z80_scf
| { nPCOffset = 1; } z80_set
| z80_sla
| z80_sra
| z80_srl
| { nPCOffset = 1; } z80_stop
| { nPCOffset = 1; } z80_sub
| z80_swap
| { nPCOffset = 1; } z80_xor
;
z80_adc : T_Z80_ADC op_a_n {
out_AbsByte(0xCE);
out_RelByte(&$2);
}
| T_Z80_ADC op_a_r { out_AbsByte(0x88 | $2); }
;
z80_add : T_Z80_ADD op_a_n {
out_AbsByte(0xC6);
out_RelByte(&$2);
}
| T_Z80_ADD op_a_r { out_AbsByte(0x80 | $2); }
| T_Z80_ADD op_hl_ss { out_AbsByte(0x09 | ($2 << 4)); }
| T_Z80_ADD T_MODE_SP T_COMMA reloc_8bit {
out_AbsByte(0xE8);
out_RelByte(&$4);
}
;
z80_and : T_Z80_AND op_a_n {
out_AbsByte(0xE6);
out_RelByte(&$2);
}
| T_Z80_AND op_a_r { out_AbsByte(0xA0 | $2); }
;
z80_bit : T_Z80_BIT const_3bit T_COMMA reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x40 | ($2 << 3) | $4);
}
;
z80_call : T_Z80_CALL reloc_16bit {
out_AbsByte(0xCD);
out_RelWord(&$2);
}
| T_Z80_CALL ccode T_COMMA reloc_16bit {
out_AbsByte(0xC4 | ($2 << 3));
out_RelWord(&$4);
}
;
z80_ccf : T_Z80_CCF { out_AbsByte(0x3F); }
;
z80_cp : T_Z80_CP op_a_n {
out_AbsByte(0xFE);
out_RelByte(&$2);
}
| T_Z80_CP op_a_r { out_AbsByte(0xB8 | $2); }
;
z80_cpl : T_Z80_CPL { out_AbsByte(0x2F); }
;
z80_daa : T_Z80_DAA { out_AbsByte(0x27); }
;
z80_dec : T_Z80_DEC reg_r { out_AbsByte(0x05 | ($2 << 3)); }
| T_Z80_DEC reg_ss { out_AbsByte(0x0B | ($2 << 4)); }
;
z80_di : T_Z80_DI { out_AbsByte(0xF3); }
;
z80_ei : T_Z80_EI { out_AbsByte(0xFB); }
;
z80_halt : T_Z80_HALT {
out_AbsByte(0x76);
if (haltnop)
out_AbsByte(0x00);
}
;
z80_inc : T_Z80_INC reg_r { out_AbsByte(0x04 | ($2 << 3)); }
| T_Z80_INC reg_ss { out_AbsByte(0x03 | ($2 << 4)); }
;
z80_jp : T_Z80_JP reloc_16bit {
out_AbsByte(0xC3);
out_RelWord(&$2);
}
| T_Z80_JP ccode T_COMMA reloc_16bit {
out_AbsByte(0xC2 | ($2 << 3));
out_RelWord(&$4);
}
| T_Z80_JP T_MODE_HL {
out_AbsByte(0xE9);
}
;
z80_jr : T_Z80_JR reloc_16bit {
out_AbsByte(0x18);
out_PCRelByte(&$2);
}
| T_Z80_JR ccode T_COMMA reloc_16bit {
out_AbsByte(0x20 | ($2 << 3));
out_PCRelByte(&$4);
}
;
z80_ldi : T_Z80_LDI T_LBRACK T_MODE_HL T_RBRACK T_COMMA T_MODE_A {
out_AbsByte(0x02 | (2 << 4));
}
| T_Z80_LDI T_MODE_A T_COMMA T_LBRACK T_MODE_HL T_RBRACK {
out_AbsByte(0x0A | (2 << 4));
}
;
z80_ldd : T_Z80_LDD T_LBRACK T_MODE_HL T_RBRACK T_COMMA T_MODE_A {
out_AbsByte(0x02 | (3 << 4));
}
| T_Z80_LDD T_MODE_A T_COMMA T_LBRACK T_MODE_HL T_RBRACK {
out_AbsByte(0x0A | (3 << 4));
}
;
z80_ldio : T_Z80_LDIO T_MODE_A T_COMMA op_mem_ind {
rpn_CheckHRAM(&$4, &$4);
out_AbsByte(0xF0);
out_RelByte(&$4);
}
| T_Z80_LDIO op_mem_ind T_COMMA T_MODE_A {
rpn_CheckHRAM(&$2, &$2);
out_AbsByte(0xE0);
out_RelByte(&$2);
}
| T_Z80_LDIO T_MODE_A T_COMMA c_ind {
out_AbsByte(0xF2);
}
| T_Z80_LDIO c_ind T_COMMA T_MODE_A {
out_AbsByte(0xE2);
}
;
c_ind : T_LBRACK T_MODE_C T_RBRACK
| T_LBRACK T_MODE_HW_C T_RBRACK
;
z80_ld : z80_ld_mem
| z80_ld_cind
| z80_ld_rr
| z80_ld_ss
| z80_ld_hl
| z80_ld_sp
| z80_ld_r
| z80_ld_a
;
z80_ld_hl : T_Z80_LD T_MODE_HL T_COMMA T_MODE_SP reloc_8bit {
out_AbsByte(0xF8);
out_RelByte(&$5);
}
| T_Z80_LD T_MODE_HL T_COMMA reloc_16bit {
out_AbsByte(0x01 | (REG_HL << 4));
out_RelWord(&$4);
}
;
z80_ld_sp : T_Z80_LD T_MODE_SP T_COMMA T_MODE_HL { out_AbsByte(0xF9); }
| T_Z80_LD T_MODE_SP T_COMMA reloc_16bit {
out_AbsByte(0x01 | (REG_SP << 4));
out_RelWord(&$4);
}
;
z80_ld_mem : T_Z80_LD op_mem_ind T_COMMA T_MODE_SP {
out_AbsByte(0x08);
out_RelWord(&$2);
}
| T_Z80_LD op_mem_ind T_COMMA T_MODE_A {
if (optimizeloads && rpn_isKnown(&$2)
&& $2.nVal >= 0xFF00) {
out_AbsByte(0xE0);
out_AbsByte($2.nVal & 0xFF);
rpn_Free(&$2);
} else {
out_AbsByte(0xEA);
out_RelWord(&$2);
}
}
;
z80_ld_cind : T_Z80_LD c_ind T_COMMA T_MODE_A {
out_AbsByte(0xE2);
}
;
z80_ld_rr : T_Z80_LD reg_rr T_COMMA T_MODE_A {
out_AbsByte(0x02 | ($2 << 4));
}
;
z80_ld_r : T_Z80_LD reg_r T_COMMA reloc_8bit {
out_AbsByte(0x06 | ($2 << 3));
out_RelByte(&$4);
}
| T_Z80_LD reg_r T_COMMA reg_r {
if (($2 == REG_HL_IND) && ($4 == REG_HL_IND))
error("LD [HL],[HL] not a valid instruction\n");
else
out_AbsByte(0x40 | ($2 << 3) | $4);
}
;
z80_ld_a : T_Z80_LD reg_r T_COMMA c_ind {
if ($2 == REG_A)
out_AbsByte(0xF2);
else
error("Destination operand must be A\n");
}
| T_Z80_LD reg_r T_COMMA reg_rr {
if ($2 == REG_A)
out_AbsByte(0x0A | ($4 << 4));
else
error("Destination operand must be A\n");
}
| T_Z80_LD reg_r T_COMMA op_mem_ind {
if ($2 == REG_A) {
if (optimizeloads && rpn_isKnown(&$4)
&& $4.nVal >= 0xFF00) {
out_AbsByte(0xF0);
out_AbsByte($4.nVal & 0xFF);
rpn_Free(&$4);
} else {
out_AbsByte(0xFA);
out_RelWord(&$4);
}
} else {
error("Destination operand must be A\n");
rpn_Free(&$4);
}
}
;
z80_ld_ss : T_Z80_LD T_MODE_BC T_COMMA reloc_16bit {
out_AbsByte(0x01 | (REG_BC << 4));
out_RelWord(&$4);
}
| T_Z80_LD T_MODE_DE T_COMMA reloc_16bit {
out_AbsByte(0x01 | (REG_DE << 4));
out_RelWord(&$4);
}
/*
* HL is taken care of in z80_ld_hl
* SP is taken care of in z80_ld_sp
*/
;
z80_nop : T_Z80_NOP { out_AbsByte(0x00); }
;
z80_or : T_Z80_OR op_a_n {
out_AbsByte(0xF6);
out_RelByte(&$2);
}
| T_Z80_OR op_a_r { out_AbsByte(0xB0 | $2); }
;
z80_pop : T_Z80_POP reg_tt { out_AbsByte(0xC1 | ($2 << 4)); }
;
z80_push : T_Z80_PUSH reg_tt { out_AbsByte(0xC5 | ($2 << 4)); }
;
z80_res : T_Z80_RES const_3bit T_COMMA reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x80 | ($2 << 3) | $4);
}
;
z80_ret : T_Z80_RET { out_AbsByte(0xC9);
}
| T_Z80_RET ccode { out_AbsByte(0xC0 | ($2 << 3)); }
;
z80_reti : T_Z80_RETI { out_AbsByte(0xD9); }
;
z80_rl : T_Z80_RL reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x10 | $2);
}
;
z80_rla : T_Z80_RLA { out_AbsByte(0x17); }
;
z80_rlc : T_Z80_RLC reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x00 | $2);
}
;
z80_rlca : T_Z80_RLCA { out_AbsByte(0x07); }
;
z80_rr : T_Z80_RR reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x18 | $2);
}
;
z80_rra : T_Z80_RRA { out_AbsByte(0x1F); }
;
z80_rrc : T_Z80_RRC reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x08 | $2);
}
;
z80_rrca : T_Z80_RRCA { out_AbsByte(0x0F); }
;
z80_rst : T_Z80_RST reloc_8bit {
rpn_CheckRST(&$2, &$2);
if (!rpn_isKnown(&$2))
out_RelByte(&$2);
else
out_AbsByte(0xC7 | $2.nVal);
rpn_Free(&$2);
}
;
z80_sbc : T_Z80_SBC op_a_n {
out_AbsByte(0xDE);
out_RelByte(&$2);
}
| T_Z80_SBC op_a_r { out_AbsByte(0x98 | $2); }
;
z80_scf : T_Z80_SCF { out_AbsByte(0x37); }
;
z80_set : T_POP_SET const_3bit T_COMMA reg_r {
out_AbsByte(0xCB);
out_AbsByte(0xC0 | ($2 << 3) | $4);
}
;
z80_sla : T_Z80_SLA reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x20 | $2);
}
;
z80_sra : T_Z80_SRA reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x28 | $2);
}
;
z80_srl : T_Z80_SRL reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x38 | $2);
}
;
z80_stop : T_Z80_STOP {
out_AbsByte(0x10);
out_AbsByte(0x00);
}
| T_Z80_STOP reloc_8bit {
out_AbsByte(0x10);
out_RelByte(&$2);
}
;
z80_sub : T_Z80_SUB op_a_n {
out_AbsByte(0xD6);
out_RelByte(&$2);
}
| T_Z80_SUB op_a_r { out_AbsByte(0x90 | $2);
}
;
z80_swap : T_Z80_SWAP reg_r {
out_AbsByte(0xCB);
out_AbsByte(0x30 | $2);
}
;
z80_xor : T_Z80_XOR op_a_n {
out_AbsByte(0xEE);
out_RelByte(&$2);
}
| T_Z80_XOR op_a_r { out_AbsByte(0xA8 | $2); }
;
op_mem_ind : T_LBRACK reloc_16bit T_RBRACK { $$ = $2; }
;
op_hl_ss : reg_ss
| T_MODE_HL T_COMMA reg_ss { $$ = $3; }
;
op_a_r : reg_r
| T_MODE_A T_COMMA reg_r { $$ = $3; }
;
op_a_n : reloc_8bit
| T_MODE_A T_COMMA reloc_8bit { $$ = $3; }
;
T_MODE_A : T_TOKEN_A
| T_OP_HIGH T_LPAREN T_MODE_AF T_RPAREN
;
T_MODE_B : T_TOKEN_B
| T_OP_HIGH T_LPAREN T_MODE_BC T_RPAREN
;
T_MODE_C : T_TOKEN_C
| T_OP_LOW T_LPAREN T_MODE_BC T_RPAREN
;
T_MODE_D : T_TOKEN_D
| T_OP_HIGH T_LPAREN T_MODE_DE T_RPAREN
;
T_MODE_E : T_TOKEN_E
| T_OP_LOW T_LPAREN T_MODE_DE T_RPAREN
;
T_MODE_H : T_TOKEN_H
| T_OP_HIGH T_LPAREN T_MODE_HL T_RPAREN
;
T_MODE_L : T_TOKEN_L
| T_OP_LOW T_LPAREN T_MODE_HL T_RPAREN
;
ccode : T_CC_NZ { $$ = CC_NZ; }
| T_CC_Z { $$ = CC_Z; }
| T_CC_NC { $$ = CC_NC; }
| T_TOKEN_C { $$ = CC_C; }
;
reg_r : T_MODE_B { $$ = REG_B; }
| T_MODE_C { $$ = REG_C; }
| T_MODE_D { $$ = REG_D; }
| T_MODE_E { $$ = REG_E; }
| T_MODE_H { $$ = REG_H; }
| T_MODE_L { $$ = REG_L; }
| T_LBRACK T_MODE_HL T_RBRACK { $$ = REG_HL_IND; }
| T_MODE_A { $$ = REG_A; }
;
reg_tt : T_MODE_BC { $$ = REG_BC; }
| T_MODE_DE { $$ = REG_DE; }
| T_MODE_HL { $$ = REG_HL; }
| T_MODE_AF { $$ = REG_AF; }
;
reg_ss : T_MODE_BC { $$ = REG_BC; }
| T_MODE_DE { $$ = REG_DE; }
| T_MODE_HL { $$ = REG_HL; }
| T_MODE_SP { $$ = REG_SP; }
;
reg_rr : T_LBRACK T_MODE_BC T_RBRACK { $$ = REG_BC_IND; }
| T_LBRACK T_MODE_DE T_RBRACK { $$ = REG_DE_IND; }
| hl_ind_inc { $$ = REG_HL_INDINC; }
| hl_ind_dec { $$ = REG_HL_INDDEC; }
;
hl_ind_inc : T_LBRACK T_MODE_HL_INC T_RBRACK
| T_LBRACK T_MODE_HL T_OP_ADD T_RBRACK
;
hl_ind_dec : T_LBRACK T_MODE_HL_DEC T_RBRACK
| T_LBRACK T_MODE_HL T_OP_SUB T_RBRACK
;
%%