diff options
| -rw-r--r-- | alu.asm | 48 |
1 files changed, 24 insertions, 24 deletions
@@ -7,10 +7,10 @@ alu_add: ;; d1 + d0 -> d1 move.b d0,f_tmp_src_b ; preserve operands for flag work move.b d1,f_tmp_dst_b - move.b #1,(f_tmp_byte-flag_storage)(a3) + move.b #1,f_tmp_byte add d0,d1 - move sr,(f_host_sr-flag_storage)(a3) - move.w #0202,(flag_byte-flag_storage)(a3) + move sr,f_host_sr + move.w #0202,flag_byte rts alu_adc: @@ -21,11 +21,11 @@ alu_adc: move.b flag_byte(pc),d2 andi.b #1,d2 add.b d0,d2 - move.b d2,(f_tmp_src_b-flag_storage)(a3) - move.b d1,(f_tmp_dst_b-flag_storage)(a3) + move.b d2,f_tmp_src_b + move.b d1,f_tmp_dst_b add.b d2,d1 - move sr,(f_host_ccr-flag_storage)(a3) - move.w #$0202,(flag_byte-flag_storage)(a3) + move sr,f_host_ccr + move.w #$0202,flag_byte rts alu_sbc: @@ -39,12 +39,12 @@ alu_sbc: move.b flag_byte(pc),d2 andi.b #1,d2 add.b d0,d2 - move.b d2,(f_tmp_src_b-flag_storage)(a3) - move.b d1,(f_tmp_dst_b-flag_storage)(a3) + move.b d2,f_tmp_src_b + move.b d1,f_tmp_dst_b sub.b d2,d1 - move sr,(f_host_sr-flag_storage)(a3) - move.b #$02,(flag_byte-flag_storage)(a3) - move.b #$02,(flag_valid-flag_storage)(a3) + move sr,f_host_sr + move.b #$02,flag_byte + move.b #$02,flag_valid pop.l d2 rts @@ -57,13 +57,13 @@ alu_sub: ;; XXX use lea and then d(an) if you have a spare register. ;; preserve operands for flagging - move.b d0,(f_tmp_src_b-flag_storage)(a3) - move.b d1,(f_tmp_dst_b-flag_storage)(a3) - move.b #1,(f_tmp_byte-flag_storage)(a3) - andi.b #%00000010,(flag_valid-flag_storage)(a3) - move.b #%00000010,(flag_byte-flag_storage)(a3) + move.b d0,f_tmp_src_b + move.b d1,f_tmp_dst_b + move.b #1,f_tmp_byte + andi.b #%00000010,flag_valid + move.b #%00000010,flag_byte sub d0,d1 - move sr,(f_host_sr-flag_storage)(a3) + move sr,f_host_sr rts alu_and: @@ -81,11 +81,11 @@ alu_or: alu_cp: ;; Same as SUB but the macro that calls this doesn't save the ;; result. - move.b d0,(f_tmp_src_b-flag_storage)(a3) - move.b d1,(f_tmp_dst_b-flag_storage)(a3) - move.b #1,(f_tmp_byte-flag_storage)(a3) - andi.b #%00000010,(flag_valid-flag_storage)(a3) - move.b #%00000010,(flag_byte-flag_storage)(a3) + move.b d0,f_tmp_src_b + move.b d1,f_tmp_dst_b + move.b #1,f_tmp_byte + andi.b #%00000010,flag_valid + move.b #%00000010,flag_byte sub d0,d1 - move sr,(f_host_sr-flag_storage)(a3) + move sr,f_host_sr rts |