mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-04 03:05:43 +00:00
428 lines
9.8 KiB
Plaintext
428 lines
9.8 KiB
Plaintext
PR#3
|
||
PREFIX /A2OSX.SRC
|
||
NEW
|
||
INC 1
|
||
AUTO 6
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
* BIN.LoadExeYA
|
||
* in :
|
||
* A = hMem of FilePath (PSTRING)
|
||
* out :
|
||
* Y,A = MEMPTR
|
||
* X = hMem of Code Segment
|
||
*--------------------------------------
|
||
K.LoadEXEYA >STYA K.LoadEXEYA.Filename
|
||
>SYSCALL SYS.PStrUprYA Y,A unmodified
|
||
jsr K.GetMemByNameYA
|
||
bcs K.LoadEXEYA.1 not already loaded
|
||
|
||
>STYA ZPQuickPtr1 Save base address
|
||
ldy #S.MEM.REFCNT
|
||
lda (ZPQuickPtr1),y
|
||
inc
|
||
sta (ZPQuickPtr1),y
|
||
|
||
txa
|
||
jmp K.GetMemPtrA X=hMem from K.GetMemByNameA
|
||
*--------------------------------------
|
||
K.LoadEXEYA.1 >PUSHWI KrnBuf256
|
||
>PUSHW K.LoadEXEYA.Filename
|
||
jsr K.STAT Look for AUXTYPE
|
||
bcs .9
|
||
|
||
>LDYA KrnBuf256+S.STAT.PRODOS.AUXTYPE
|
||
>STYA BIN.Relocate.Start
|
||
|
||
>PUSHYA Push AUXTYPE
|
||
>PUSHBI 6 S.FILEINFO.TYPE.BIN
|
||
>PUSHBI SYS.FOPEN.R
|
||
>PUSHW K.LoadEXEYA.Filename
|
||
|
||
jsr K.LoadFile
|
||
.9 bcs .99 Error Loading file
|
||
|
||
stx K.LoadEXEYA.hMem save hMem
|
||
|
||
pha YA=CODE+DATA size
|
||
tya
|
||
* clc CC from bcs .99
|
||
|
||
adc BIN.Relocate.Start Get AUXTYPE for actual Base Address
|
||
sta BIN.Relocate.End compute Range End=AUXTYPE+FILELEN
|
||
pla
|
||
adc BIN.Relocate.Start+1
|
||
sta BIN.Relocate.End+1
|
||
|
||
txa
|
||
jsr K.GetMemPtrA
|
||
>STYA ZPQuickPtr1 set ZPQuickPtr1 -> Code start
|
||
|
||
pha YA = actual load address
|
||
tya
|
||
sec
|
||
sbc BIN.Relocate.Start
|
||
sta BIN.Relocate.Offset Offset=ZPQuickPtr1-AUXTYPE
|
||
pla
|
||
sbc BIN.Relocate.Start+1
|
||
sta BIN.Relocate.Offset+1
|
||
|
||
ldy #H.BIN.CODE.LEN get Code Len
|
||
lda (ZPQuickPtr1),y
|
||
clc
|
||
adc ZPQuickPtr1
|
||
sta ZPQuickPtr2 Make ZPQuickPtr2 = ZPQuickPtr1 + CodeLen
|
||
iny
|
||
lda (ZPQuickPtr1),y
|
||
adc ZPQuickPtr1+1
|
||
sta ZPQuickPtr2+1
|
||
|
||
jsr BIN.RelocateEXE
|
||
|
||
>LDYA K.LoadEXEYA.Filename get back bin path
|
||
>SYSCALL SYS.NewPStrYA make a copy of this string
|
||
bcs .98
|
||
|
||
lda K.LoadEXEYA.hMem Keep X=hMem
|
||
jsr K.GetMemByIDA X unmodified
|
||
>STYA ZPQuickPtr1
|
||
|
||
lda (ZPQuickPtr1)
|
||
ora #S.MEM.F.CODE This is a code segment
|
||
sta (ZPQuickPtr1)
|
||
|
||
txa Get Back hMem
|
||
ldy #S.MEM.BIN
|
||
sta (ZPQuickPtr1),y
|
||
|
||
lda K.LoadEXEYA.hMem
|
||
tax return hMEM to Caller...
|
||
jsr K.GetMemPtrA
|
||
clc ...and Y,A=PTR to CS
|
||
rts
|
||
|
||
.98 pha
|
||
lda K.LoadEXEYA.hMem
|
||
jsr K.FreeMemA Discard Loaded Code
|
||
pla
|
||
|
||
sec
|
||
.99 rts
|
||
*--------------------------------------
|
||
K.LoadEXEYA.Filename .BS 2
|
||
K.LoadEXEYA.hMem .BS 1
|
||
*--------------------------------------
|
||
* BIN.InstallDRV
|
||
* In:
|
||
* pDrv = .DRV File Loaded Address
|
||
* Note:
|
||
* K.LoadEXEYA called from K.LoadDrvYA
|
||
* Already setup correctly pDrv,
|
||
* BIN.Relocate.Start,End
|
||
*--------------------------------------
|
||
BIN.InstallDRV ldy #H.BIN.DRV.CODE.O
|
||
lda (pDrv),y
|
||
clc
|
||
adc BIN.Relocate.Start Advance start From AUXTYPE to AUXTYPE+DRV code offset
|
||
sta BIN.Relocate.Start
|
||
|
||
iny
|
||
lda (pDrv),y
|
||
adc BIN.Relocate.Start+1
|
||
sta BIN.Relocate.Start+1
|
||
|
||
lda DevMgr.Free Offset = Target DRV address-(AUXTYPE+DRV OFFSET)
|
||
sec
|
||
sbc BIN.Relocate.Start
|
||
sta BIN.Relocate.Offset
|
||
|
||
lda DevMgr.Free+1
|
||
sbc BIN.Relocate.Start+1
|
||
sta BIN.Relocate.Offset+1
|
||
|
||
lda BIN.Relocate.End Compute DRVLen=End-start
|
||
sec
|
||
sbc BIN.Relocate.Start
|
||
sta BIN.InstallDRV.DRVLen
|
||
|
||
lda BIN.Relocate.End+1
|
||
sbc BIN.Relocate.Start+1
|
||
sta BIN.InstallDRV.DRVLen+1
|
||
|
||
lda DevMgr.Free
|
||
clc
|
||
adc BIN.InstallDRV.DRVLen
|
||
sta BIN.InstallDRV.DRVEnd
|
||
tay Save DRVEnd LO
|
||
lda DevMgr.Free+1
|
||
adc BIN.InstallDRV.DRVLen+1 A = DRVEnd HI
|
||
sta BIN.InstallDRV.DRVEnd+1
|
||
|
||
bcs .9 we crossed $FFFF, out of mem
|
||
|
||
cpy #DevMgr.HiMem
|
||
sbc /DevMgr.HiMem
|
||
bcs .9 No More Room to load Driver....
|
||
|
||
lda DevMgr.LastDevID
|
||
inc
|
||
cmp #K.DEV.MAX
|
||
bne .10 No Device Handle Left
|
||
|
||
lda #DEVMGR.ERROOH
|
||
sec
|
||
rts
|
||
|
||
.9 lda #DEVMGR.ERROOM
|
||
sec
|
||
rts
|
||
|
||
.10 sta DevMgr.LastDevID
|
||
|
||
>SYSCALL SYS.GetDevByIDA
|
||
>STYA ZPQuickPtr2 setup Ptr2 to dest HEADER
|
||
|
||
ldy #H.BIN.DRV.HEADER.O
|
||
lda (pDrv),y
|
||
clc
|
||
adc pDrv
|
||
sta ZPQuickPtr1
|
||
iny
|
||
lda (pDrv),y
|
||
adc pDrv+1
|
||
sta ZPQuickPtr1+1 set Ptr1 to Src HEADER
|
||
|
||
ldy #S.DEV-1
|
||
|
||
.1 lda (ZPQuickPtr1),y copy header to DevMgr.Table
|
||
sta (ZPQuickPtr2),y
|
||
dey
|
||
bpl .1
|
||
|
||
ldy #S.DEV.ID
|
||
lda DevMgr.LastDevID
|
||
sta (ZPQuickPtr2),y
|
||
|
||
dey #S.DEV.JMP+1 Setup Main JMP
|
||
lda DevMgr.Free+1
|
||
sta (ZPQuickPtr2),y
|
||
tax
|
||
|
||
dey #S.DEV.JMP
|
||
lda DevMgr.Free
|
||
sta (ZPQuickPtr2),y
|
||
|
||
sta ZPQuickPtr2 set Ptr2 to Dest CODE
|
||
stx ZPQuickPtr2+1
|
||
|
||
ldy #H.BIN.DRV.CODE.O
|
||
lda (pDrv),y
|
||
clc
|
||
adc pDrv
|
||
sta ZPQuickPtr1
|
||
iny
|
||
lda (pDrv),y
|
||
adc pDrv+1
|
||
sta ZPQuickPtr1+1 set Ptr1 to Src CODE
|
||
|
||
lda BIN.InstallDRV.DrvLen+1
|
||
eor #$ff
|
||
pha
|
||
lda BIN.InstallDRV.DrvLen
|
||
eor #$ff
|
||
tax
|
||
|
||
ldy #0
|
||
|
||
.2 inx Move CODE in LC
|
||
bne .3
|
||
pla
|
||
inc
|
||
beq .4
|
||
pha
|
||
|
||
.3 lda (ZPQuickPtr1),y
|
||
sta (ZPQuickPtr2),y
|
||
iny
|
||
bne .2
|
||
inc ZPQuickPtr1+1
|
||
inc ZPQuickPtr2+1
|
||
bra .2
|
||
|
||
.4 ldy #H.BIN.DRV.CODE.LEN
|
||
lda DevMgr.Free Make Ptr1 = code start
|
||
sta ZPQuickPtr1
|
||
clc
|
||
adc (pDrv),y
|
||
sta ZPQuickPtr2
|
||
|
||
iny
|
||
lda DevMgr.Free+1
|
||
sta ZPQuickPtr1+1
|
||
adc (pDrv),y
|
||
sta ZPQuickPtr2+1 Make ZPQuickPtr2 = ZPQuickPtr1 + CodeLen
|
||
|
||
jsr BIN.RelocateDRV
|
||
|
||
>LDYA BIN.InstallDRV.DrvEnd
|
||
>STYA DevMgr.Free
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
BIN.InstallDRV.DrvLen .BS 2
|
||
BIN.InstallDRV.DrvEnd .BS 2
|
||
*--------------------------------------
|
||
* BIN.Relocate___ :
|
||
* In :
|
||
* ZPQuickPtr1 = Ptr to Code
|
||
* ZPQuickPtr2 = End Of Code
|
||
*--------------------------------------
|
||
BIN.Relocate.Start .BS 2
|
||
BIN.Relocate.End .BS 2
|
||
BIN.Relocate.Offset .BS 2
|
||
*--------------------------------------
|
||
BIN.RelocateEXE ldy #H.BIN.HEADER+1
|
||
lda (ZPQuickPtr1),y
|
||
cmp /H.BIN.HEADER.BIN65
|
||
beq .1
|
||
cmp /H.BIN.HEADER.DRV65
|
||
beq .1
|
||
|
||
lda #SYSMGR.ERRIBIN
|
||
sec
|
||
rts
|
||
|
||
.1 ldy #H.BIN.JMP relocate Main JMP
|
||
lda (ZPQuickPtr1),y
|
||
clc
|
||
adc BIN.Relocate.Offset
|
||
sta (ZPQuickPtr1),y
|
||
|
||
iny
|
||
lda (ZPQuickPtr1),y
|
||
adc BIN.Relocate.Offset+1
|
||
sta (ZPQuickPtr1),y
|
||
|
||
ldy #H.BIN.EXE.REL.TABLE skip Header, CS.SIZE & DS.SIZE... (16 bytes)
|
||
|
||
.HS 2C bit abs
|
||
*--------------------------------------
|
||
BIN.RelocateDRV ldy #H.BIN.DRV.REL.TABLE
|
||
|
||
.1 lda (ZPQuickPtr1),y Start Relocate JMP table
|
||
tax LO in X
|
||
iny
|
||
ora (ZPQuickPtr1),y ORA with HI
|
||
beq .2 $0000 = end of table
|
||
|
||
dey
|
||
txa get back LO
|
||
clc
|
||
adc BIN.Relocate.Offset
|
||
sta (ZPQuickPtr1),y
|
||
|
||
iny
|
||
lda (ZPQuickPtr1),y
|
||
adc BIN.Relocate.Offset+1
|
||
sta (ZPQuickPtr1),y
|
||
|
||
iny
|
||
|
||
bra .1
|
||
*--------------------------------------
|
||
.2 tya add current offset in Y to Ptr
|
||
|
||
sec + 1 to skip last 00 from beq .2
|
||
|
||
adc ZPQuickPtr1
|
||
sta ZPQuickPtr1
|
||
bcc .3
|
||
inc ZPQuickPtr1+1 ZPQuickPtr1=Current Code PTR
|
||
|
||
.3 lda (ZPQuickPtr1) get OPCODE
|
||
lsr /2
|
||
tax
|
||
lda BIN.OPCODES,x get OPCODE definition
|
||
bcs .4 go get LO nibble
|
||
lsr
|
||
lsr move HI -> LO
|
||
lsr
|
||
lsr
|
||
.4 and #$0f
|
||
|
||
bit #$8 abs addressing?
|
||
beq .6 no....
|
||
|
||
and #7 save Opcode length...
|
||
pha
|
||
|
||
ldy #1
|
||
lda (ZPQuickPtr1),y Get LO
|
||
tax save LO in X
|
||
|
||
iny make Y point to HI
|
||
|
||
cpx BIN.Relocate.Start
|
||
lda (ZPQuickPtr1),y Get HI
|
||
sbc BIN.Relocate.Start+1
|
||
bcc .5 addr < BIN.Relocate.Start, out of range
|
||
|
||
txa Get back LO
|
||
cpx BIN.Relocate.End
|
||
lda (ZPQuickPtr1),y Get HI
|
||
sbc BIN.Relocate.End+1
|
||
bcs .5 addr > BIN.Relocate.End, out of range
|
||
|
||
txa Get back LO
|
||
* clc CC from bcs .6
|
||
adc BIN.Relocate.Offset add Offset to abs address
|
||
dey
|
||
sta (ZPQuickPtr1),y store relocated addr LO
|
||
iny
|
||
lda (ZPQuickPtr1),y Get HI
|
||
adc BIN.Relocate.Offset+1
|
||
sta (ZPQuickPtr1),y store relocated addr HI
|
||
|
||
.5 pla get back Opcode length...
|
||
|
||
.6 clc A = OPCODE length
|
||
adc ZPQuickPtr1
|
||
sta ZPQuickPtr1
|
||
bcc .7
|
||
inc ZPQuickPtr1+1
|
||
|
||
.7 eor ZPQuickPtr2 A = ZPQuickPtr1
|
||
bne .3
|
||
lda ZPQuickPtr1+1
|
||
eor ZPQuickPtr2+1
|
||
bne .3 next opcode....
|
||
|
||
.8 rts
|
||
*--------------------------------------
|
||
* 65C02 OPCODES
|
||
* Bit 3 : 1 = absolute addressing
|
||
* Bit 2-1-0 : opcode + @ length
|
||
*--------------------------------------
|
||
* 0.1.2.3.4.5.6.7.8.9.A.B.C.D.E.F
|
||
BIN.OPCODES .HS 1.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.B.B.B.3
|
||
.HS B.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.B.B.B.3
|
||
.HS 1.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.1.B.B.3
|
||
.HS 1.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.1.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.2.1.1.B.B.B.3
|
||
.HS 2.2.2.1.2.2.2.2.1.B.1.1.1.B.B.3
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE SYS/KERNEL.S.BIN
|
||
LOAD SYS/KERNEL.S
|
||
ASM
|