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zasm: add a bunch of instructions

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This commit is contained in:
Virgil Dupras 2019-04-20 22:56:22 -04:00
parent 115dc18971
commit 89972ca210
2 changed files with 22 additions and 3 deletions
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4
apps/zasm/tests/geninstrs.py
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@ -20,7 +20,9 @@ argspecTbl = {
'c': "(BC)",
'a': "AF",
'f': "AF'",
'X': "IX",
'x': "(IX)",
'Y': "IY",
'y': "(IY)",
's': "SP",
'p': "(SP)",
@ -37,6 +39,8 @@ argGrpTbl = {
chr(0x01): "bdha",
chr(0x02): "ZzC=",
chr(0x03): "bdhs",
chr(0x04): "bdXs",
chr(0x05): "bdYs",
chr(0x0a): "ZzC=+-12",
chr(0x0b): "BCDEHLA",
}

21
apps/zasm/zasm.asm
View File

@ -2,9 +2,9 @@
; *** Consts ***
; Number of rows in the argspec table
ARGSPEC_TBL_CNT .equ 27
ARGSPEC_TBL_CNT .equ 28
; Number of rows in the primary instructions table
INSTR_TBL_CNT .equ 75
INSTR_TBL_CNT .equ 77
; size in bytes of each row in the primary instructions table
INSTR_TBL_ROWSIZE .equ 9
@ -447,10 +447,19 @@ findInGroup:
; For constant args, it's easy: if A == (HL), it's a success.
; If it's not this, then we check if it's a numerical arg.
; If A is a group ID, we do something else: we check that (HL) exists in the
; groupspec (argGrpTbl)
; groupspec (argGrpTbl).
; Set Z according to whether we match or not.
matchArg:
cp a, (hl)
ret z
; not an exact match. Before we continue: is A zero? Because if it is,
; we have to stop right here: no match possible.
cp 0
jr nz, .checkIfNumber ; not a zero, we can continue
; zero, stop here
call unsetZ
ret
.checkIfNumber:
; not an exact match, let's check for numerical constants.
call JUMP_UPCASE
call checkNOrM
@ -713,6 +722,8 @@ argspecTbl:
.db 'c', "(BC)"
.db 'a', "AF", 0, 0
.db 'f', "AF'", 0
.db 'X', "IX", 0, 0
.db 'Y', "IY", 0, 0
.db 'x', "(IX)" ; always come with displacement
.db 'y', "(IY)" ; with JP
.db 's', "SP", 0, 0
@ -745,6 +756,8 @@ argGrpTbl:
.db "bdha" ; 0x01
.db "ZzC=" ; 0x02
.db "bdhs" ; 0x03
.db "bdXs" ; 0x04
.db "bdYs" ; 0x05
argGrpCC:
.db "zZ=C12+-" ; 0xa
@ -775,6 +788,8 @@ instrTBl:
.db "ADD", 0, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
.db "ADD", 0, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
.db "ADD", 0, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
.db "ADD", 0,'X',0x4,0x44, 0xdd, 0b00001001 ; ADD IX, pp
.db "ADD", 0,'Y',0x5,0x44, 0xfd, 0b00001001 ; ADD IY, rr
.db "AND", 0, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
.db "AND", 0, 0xb, 0, 0, 0b10100000 , 0 ; AND r
.db "AND", 0, 'n', 0, 0, 0xe6 , 0 ; AND n