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zasm: add support for RETI and RETN

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This commit is contained in:
Virgil Dupras 2019-05-17 13:21:49 -04:00
parent 072aad775a
commit c1b09123f1
1 changed files with 15 additions and 9 deletions
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24
apps/zasm/instr.asm
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@ -2,7 +2,7 @@
; Number of rows in the argspec table
ARGSPEC_TBL_CNT .equ 31
; Number of rows in the primary instructions table
INSTR_TBL_CNT .equ 136
INSTR_TBL_CNT .equ 138
; size in bytes of each row in the primary instructions table
INSTR_TBL_ROWSIZE .equ 6
; Instruction IDs They correspond to the index of the table in instrNames
@ -49,14 +49,16 @@ I_OUT .equ 0x27
I_POP .equ 0x28
I_PUSH .equ 0x29
I_RET .equ 0x2a
I_RLA .equ 0x2b
I_RLCA .equ 0x2c
I_RRA .equ 0x2d
I_RRCA .equ 0x2e
I_SBC .equ 0x2f
I_SCF .equ 0x30
I_SUB .equ 0x31
I_XOR .equ 0x32
I_RETI .equ 0x2b
I_RETN .equ 0x2c
I_RLA .equ 0x2d
I_RLCA .equ 0x2e
I_RRA .equ 0x2f
I_RRCA .equ 0x30
I_SBC .equ 0x31
I_SCF .equ 0x32
I_SUB .equ 0x33
I_XOR .equ 0x34
; Checks whether A is 'N' or 'M'
checkNOrM:
@ -899,6 +901,8 @@ instrNames:
.db "POP", 0
.db "PUSH"
.db "RET", 0
.db "RETI"
.db "RETN"
.db "RLA", 0
.db "RLCA"
.db "RRA", 0
@ -1056,6 +1060,8 @@ instrTBl:
.db I_PUSH,0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
.db I_RET, 0, 0, 0, 0xc9 , 0 ; RET
.db I_RET, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
.db I_RETI,0, 0, 0, 0xed, 0x4d ; RETI
.db I_RETN,0, 0, 0, 0xed, 0x45 ; RETN
.db I_RLA, 0, 0, 0, 0x17 , 0 ; RLA
.db I_RLCA,0, 0, 0, 0x07 , 0 ; RLCA
.db I_RRA, 0, 0, 0, 0x1f , 0 ; RRA