ref: 4d06e6de796e9e96f03f419b976bbc3dc19d2afe
dir: /src/asm/gameboy/yaccprt4.y/
section : T_POP_SECTION string ',' sectiontype
{ out_NewSection($2,$4); }
| T_POP_SECTION string ',' sectiontype '[' const ']'
{
if( $6>=0 && $6<0x10000 )
out_NewAbsSection($2,$4,$6,-1);
else
yyerror( "Address must be 16-bit" );
}
| T_POP_SECTION string ',' sectiontype ',' T_OP_BANK '[' const ']'
{
if( $4==SECT_CODE )
{
if( $8>=1 && $8<=255 )
out_NewAbsSection($2,$4,-1,$8);
else
yyerror( "BANK value out of range" );
}
else
yyerror( "BANK only allowed for CODE/DATA" );
}
| T_POP_SECTION string ',' sectiontype '[' const ']' ',' T_OP_BANK '[' const ']'
{
if( $4==SECT_CODE )
{
if( $6>=0 && $6<0x10000 )
{
if( $11>=1 && $11<=255 )
out_NewAbsSection($2,$4,$6,$11);
else
yyerror( "BANK value out of range" );
}
else
yyerror( "Address must be 16-bit" );
}
else
yyerror( "BANK only allowed for CODE/DATA" );
}
;
sectiontype : T_SECT_BSS { $$=SECT_BSS; }
| T_SECT_VRAM { $$=SECT_VRAM; }
| T_SECT_CODE { $$=SECT_CODE; }
| T_SECT_HOME { $$=SECT_HOME; }
| T_SECT_HRAM { $$=SECT_HRAM; }
;
cpu_command : z80_adc
| z80_add
| z80_and
| z80_bit
| z80_call
| z80_ccf
| z80_cp
| z80_cpl
| z80_daa
| z80_dec
| z80_di
| z80_ei
| z80_ex
| z80_halt
| z80_inc
| z80_jp
| z80_jr
| z80_ld
| z80_ldd
| z80_ldi
| z80_ldio
| z80_nop
| z80_or
| z80_pop
| z80_push
| z80_res
| z80_ret
| z80_reti
| z80_rl
| z80_rla
| z80_rlc
| z80_rlca
| z80_rr
| z80_rra
| z80_rrc
| z80_rrca
| z80_rst
| z80_sbc
| z80_scf
| z80_set
| z80_sla
| z80_sra
| z80_srl
| z80_stop
| z80_sub
| z80_swap
| 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 comma const_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 comma reg_r
{ out_AbsByte(0xCB); out_AbsByte(0x40|($2<<3)|$4); }
;
z80_call : T_Z80_CALL const_16bit
{ out_AbsByte(0xCD); out_RelWord(&$2); }
| T_Z80_CALL ccode comma const_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_ex : T_Z80_EX T_MODE_HL comma T_MODE_SP_IND
{ out_AbsByte(0xE3); }
| T_Z80_EX T_MODE_SP_IND comma T_MODE_HL
{ out_AbsByte(0xE3); }
;
z80_halt : T_Z80_HALT
{ out_AbsByte(0x76); 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 const_16bit
{ out_AbsByte(0xC3); out_RelWord(&$2); }
| T_Z80_JP ccode comma const_16bit
{ out_AbsByte(0xC2|($2<<3)); out_RelWord(&$4); }
| T_Z80_JP T_MODE_HL_IND
{ out_AbsByte(0xE9); }
;
z80_jr : T_Z80_JR const_PCrel
{ out_AbsByte(0x18); out_PCRelByte(&$2); }
| T_Z80_JR ccode comma const_PCrel
{ out_AbsByte(0x20|($2<<3)); out_PCRelByte(&$4); }
;
z80_ldi : T_Z80_LDI T_MODE_HL_IND comma T_MODE_A
{ out_AbsByte(0x02|(2<<4)); }
| T_Z80_LDI T_MODE_A comma T_MODE_HL
{ out_AbsByte(0x0A|(2<<4)); }
;
z80_ldd : T_Z80_LDD T_MODE_HL_IND comma T_MODE_A
{ out_AbsByte(0x02|(3<<4)); }
| T_Z80_LDD T_MODE_A comma T_MODE_HL
{ out_AbsByte(0x0A|(3<<4)); }
;
z80_ldio : T_Z80_LDIO T_MODE_A comma op_mem_ind
{
rpn_CheckHRAM(&$4,&$4);
if( (!rpn_isReloc(&$4))
&& ($4.nVal<0 || ($4.nVal>0xFF && $4.nVal<0xFF00) || $4.nVal>0xFFFF) )
{
yyerror( "Source must be in the IO/HRAM area" );
}
out_AbsByte(0xF0);
$4.nVal&=0xFF;
out_RelByte(&$4);
}
| T_Z80_LDIO op_mem_ind comma T_MODE_A
{
rpn_CheckHRAM(&$2,&$2);
if( (!rpn_isReloc(&$2))
&& ($2.nVal<0 || ($2.nVal>0xFF && $2.nVal<0xFF00) || $2.nVal>0xFFFF) )
{
yyerror( "Destination must be in the IO/HRAM area" );
}
out_AbsByte(0xE0);
$2.nVal&=0xFF;
out_RelByte(&$2);
}
;
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 comma '[' T_MODE_SP const_8bit ']'
{ out_AbsByte(0xF8); out_RelByte(&$6); }
| T_Z80_LD T_MODE_HL comma const_16bit
{ out_AbsByte(0x01|(REG_HL<<4)); out_RelWord(&$4) }
;
z80_ld_sp : T_Z80_LD T_MODE_SP comma T_MODE_HL
{ out_AbsByte(0xF9); }
| T_Z80_LD T_MODE_SP comma const_16bit
{ out_AbsByte(0x01|(REG_SP<<4)); out_RelWord(&$4) }
;
z80_ld_mem : T_Z80_LD op_mem_ind comma T_MODE_SP
{ out_AbsByte(0x08); out_RelWord(&$2); }
| T_Z80_LD op_mem_ind comma T_MODE_A
{
if( (!rpn_isReloc(&$2)) && $2.nVal>=0xFF00)
{
out_AbsByte(0xE0);
out_AbsByte($2.nVal&0xFF);
}
else
{
out_AbsByte(0xEA);
out_RelWord(&$2);
}
}
;
z80_ld_cind : T_Z80_LD T_MODE_C_IND comma T_MODE_A
{ out_AbsByte(0xE2); }
;
z80_ld_rr : T_Z80_LD reg_rr comma T_MODE_A
{ out_AbsByte(0x02|($2<<4)); }
;
z80_ld_r : T_Z80_LD reg_r comma const_8bit
{ out_AbsByte(0x06|($2<<3)); out_RelByte(&$4); }
| T_Z80_LD reg_r comma reg_r
{
if( ($2==REG_HL_IND) && ($4==REG_HL_IND) )
{
yyerror( "LD (HL),(HL) not allowed" );
}
else
out_AbsByte(0x40|($2<<3)|$4);
}
;
z80_ld_a : T_Z80_LD reg_r comma T_MODE_C_IND
{
if( $2==REG_A )
out_AbsByte(0xF2);
else
{
yyerror( "Destination operand must be A" );
}
}
| T_Z80_LD reg_r comma reg_rr
{
if( $2==REG_A )
out_AbsByte(0x0A|($4<<4));
else
{
yyerror( "Destination operand must be A" );
}
}
| T_Z80_LD reg_r comma op_mem_ind
{
if( $2==REG_A )
{
if( (!rpn_isReloc(&$4)) && $4.nVal>=0xFF00 )
{
out_AbsByte(0xF0);
out_AbsByte($4.nVal&0xFF);
}
else
{
out_AbsByte(0xFA);
out_RelWord(&$4);
}
}
else
{
yyerror( "Destination operand must be A" );
}
}
;
z80_ld_ss : T_Z80_LD reg_ss comma const_16bit
{ out_AbsByte(0x01|($2<<4)); out_RelWord(&$4) }
;
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 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 const_8bit
{
if( rpn_isReloc(&$2) )
{
yyerror( "Address for RST must be absolute" );
}
else if( ($2.nVal&0x38)!=$2.nVal )
{
yyerror( "Invalid address for RST" );
}
else
out_AbsByte(0xC7|$2.nVal);
}
;
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 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); }
;
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 : '[' const_16bit ']' { $$ = $2 }
;
op_hl_ss : reg_ss { $$ = $1 }
| T_MODE_HL comma reg_ss { $$ = $3 }
;
op_a_r : reg_r { $$ = $1 }
| T_MODE_A comma reg_r { $$ = $3 }
;
op_a_n : const_8bit { $$ = $1 }
| T_MODE_A comma const_8bit { $$ = $3 }
;
comma : ','
;
ccode : T_CC_NZ { $$ = CC_NZ }
| T_CC_Z { $$ = CC_Z }
| T_CC_NC { $$ = CC_NC }
| T_MODE_C { $$ = 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_MODE_HL_IND { $$ = REG_HL_IND }
| T_MODE_A { $$ = 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_MODE_BC_IND { $$ = REG_BC_IND }
| T_MODE_DE_IND { $$ = REG_DE_IND }
| T_MODE_HL_INDINC { $$ = REG_HL_INDINC }
| T_MODE_HL_INDDEC { $$ = REG_HL_INDDEC }
;
%%