📄 lib86.t
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/isar.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03100 .define .isar03101 .text03102 03103 .isar:03104 pop cx03105 pop ax03106 cmp ax,#203107 .extern .unknown03108 jne .unknown03109 pop bx ! descriptor address03110 pop ax ! index03111 push cx03112 .extern .sar203113 jmp .sar2++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/lar2.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03200 .define .lar203201 .text03202 03203 .lar2:03204 ! bx, descriptor address03205 ! ax, index03206 pop cx03207 pop dx ! base address03208 push cx03209 push si.Op 27 src/lib/i86/em/lar2.s03210 mov si,dx03211 sub ax,(bx)03212 mov cx,4(bx)03213 imul cx03214 add si,ax03215 sar cx,#103216 jnb 1f03217 xorb ah,ah03218 lodsb03219 pop si03220 pop bx03221 push ax03222 jmp (bx)03223 1:03224 pop dx ! saved si03225 mov ax,4(bx)03226 pop bx ! return address03227 sub sp,ax03228 mov ax,di ! save di03229 mov di,sp03230 rep03231 mov03232 mov di,ax03233 mov si,dx03234 jmp (bx)++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/lfr6.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03300 .define .lfr603301 .text03302 .extern .retarea03303 03304 .lfr6:03305 pop bx03306 push .retarea+403307 push .retarea+203308 push .retarea03309 jmp (bx).Ep 28 src/lib/i86/em/lfr8.s++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/lfr8.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03400 .define .lfr803401 .text03402 .extern .retarea03403 03404 .lfr8:03405 pop bx03406 push .retarea+603407 push .retarea+403408 push .retarea+203409 push .retarea03410 jmp (bx)++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/loi.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03500 .define .loi03501 .define .los03502 .text03503 03504 ! #bytes in cx03505 ! address in bx03506 ! save si/di. they might be register variables03507 .los:03508 mov dx,si03509 mov si,bx03510 pop bx03511 mov ax,cx03512 sar cx,#103513 jnb 1f03514 xorb ah,ah03515 lodsb03516 mov si,dx03517 push ax03518 jmp (bx)03519 1:03520 sub sp,ax03521 jmp 1f03522 03523 .loi:03524 ! only called with size > 403525 mov dx,si03526 mov si,bx03527 pop bx03528 sub sp,cx03529 sar cx,#103530 1:03531 mov ax,di03532 mov di,sp03533 rep03534 mov.Op 29 src/lib/i86/em/loi.s03535 mov si,dx03536 mov di,ax03537 jmp (bx)++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/mli4.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03600 .define .mli403601 .text03602 03603 yl=203604 yh=403605 ! x * y03606 ! xl in ax03607 ! xh in dx03608 03609 .mli4:03610 mov bx,sp03611 push dx03612 mov cx,ax03613 mul yh(bx) ! xl*yh03614 pop dx03615 push ax03616 mov ax,dx03617 mul yl(bx) ! xh * yl03618 pop dx03619 add dx,ax ! xh*yl+xl*yh03620 mov ax,cx03621 mov cx,dx03622 mul yl(bx) ! xl*yl03623 add dx,cx03624 ret 4++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/mon.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03700 .define .mon03701 .text03702 03703 .mon:03704 .extern .stop03705 call .stop.Ep 30 src/lib/i86/em/nop.s++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/nop.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03800 .define .nop03801 .text03802 .nop:03803 ret++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/rck.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++03900 .define .rck03901 .text03902 03903 ! descriptor address in bx03904 ! value in ax, must be left there03905 .rck:03906 cmp ax,(bx)03907 jl 2f03908 cmp ax,2(bx)03909 jg 2f03910 ret03911 2:03912 push ax03913 ERANGE = 103914 .extern .error03915 mov ax,#ERANGE03916 call .error03917 pop ax03918 ret++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/ret6.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04000 .define .ret604001 .text04002 .extern .retarea04003 04004 .ret6:04005 pop bx04006 pop .retarea04007 pop .retarea+204008 pop .retarea+404009 jmp (bx).Op 31 src/lib/i86/em/ret8.s++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/ret8.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04100 .define .ret804101 .text04102 .extern .retarea04103 04104 .ret8:04105 pop bx04106 pop .retarea04107 pop .retarea+204108 pop .retarea+404109 pop .retarea+604110 jmp (bx)++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/retarea.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04200 .define .retarea04201 04202 .bss04203 .retarea:04204 .zerow 8/2++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/return.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04300 .define .sdret, .dsret, .sret, .dret, .cret 04301 .text04302 04303 .dsret:04304 pop di04305 .sret:04306 pop si04307 .cret:04308 mov sp,bp04309 pop bp04310 ret04311 04312 .sdret:04313 pop si04314 .dret:04315 pop di04316 jmp .cret.Ep 32 src/lib/i86/em/rmi4.s++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/rmi4.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04400 .define .rmi404401 .text04402 04403 yl=604404 yh=804405 xl=1004406 xh=1204407 04408 .rmi4:04409 push si04410 push di04411 mov si,sp ! copy of sp04412 mov bx,yl(si)04413 mov ax,yh(si)04414 cwd04415 cmp dx,ax04416 jne 7f04417 and dx,dx04418 jge 1f04419 neg bx04420 je 7f04421 1:04422 xor dx,dx04423 mov cx,xl(si)04424 mov ax,xh(si)04425 and ax,ax04426 jge 2f04427 neg ax04428 neg cx04429 sbb ax,dx04430 2:04431 div bx04432 xchg ax,cx04433 div bx ! dx= result(low), 0=result(high)04434 xor bx,bx04435 9:04436 cmp xh(si),#004437 jge 1f04438 neg bx04439 neg dx04440 sbb bx,#004441 1:04442 ! bx is high order result04443 ! dx is low order result04444 mov ax,dx04445 mov dx,bx ! result in ax/dx04446 pop di04447 pop si04448 ret 804449 04450 7:04451 mov di,ax04452 xor bx,bx04453 and di,di04454 jge 1f.Op 33 src/lib/i86/em/rmi4.s04455 neg di04456 neg yl(si)04457 sbb di,bx04458 1:04459 mov ax,xl(si)04460 mov dx,xh(si)04461 and dx,dx04462 jge 1f04463 neg dx04464 neg ax04465 sbb dx,bx04466 1:04467 mov cx,#1604468 1:04469 shl ax,#104470 rcl dx,#104471 rcl bx,#104472 cmp di,bx04473 ja 3f04474 jb 2f04475 cmp yl(si),dx04476 jbe 2f04477 3:04478 loop 1b04479 ! dx=result(low), bx=result(high)04480 jmp 9b04481 2:04482 sub dx,yl(si)04483 sbb bx,di04484 inc ax04485 loop 1b04486 1:04487 ! dx=result(low), bx=result(high)04488 jmp 9b++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/rmu4.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04500 .define .rmu404501 .text04502 04503 yl=604504 yh=804505 xl=1004506 xh=1204507 04508 .rmu4:04509 push si04510 push di04511 mov si,sp ! copy of sp04512 mov bx,yl(si)04513 mov ax,yh(si)04514 or ax,ax04515 jne 7f04516 1:04517 xor dx,dx04518 mov cx,xl(si)04519 mov ax,xh(si).Ep 34 src/lib/i86/em/rmu4.s04520 2:04521 div bx04522 xchg ax,cx04523 div bx04524 xor bx,bx04525 9:04526 ! bx is high order result04527 ! dx is low order result04528 mov ax,dx04529 mov dx,bx04530 pop di04531 pop si04532 ret 8 ! result in ax/dx04533 04534 7:04535 mov di,ax04536 xor bx,bx04537 mov ax,xl(si)04538 mov dx,xh(si)04539 mov cx,#1604540 1:04541 shl ax,#104542 rcl dx,#104543 rcl bx,#104544 cmp di,bx04545 ja 3f04546 jb 2f04547 cmp yl(si),dx04548 jbe 2f04549 3:04550 loop 1b04551 ! dx=result(low), bx=result(high)04552 jmp 9b04553 2:04554 sub dx,yl(si)04555 sbb bx,di04556 inc ax04557 loop 1b04558 1:04559 ! dx=result(low), bx=result(high)04560 jmp 9b++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/lib/i86/em/sar2.s ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++04600 .define .sar204601 .text04602 04603 .sar2:04604 ! bx, descriptor address04605 ! ax, index04606 pop cx04607 pop dx ! base address04608 push cx04609 xchg di,dx ! di = base address, dx is saved di.Op 35 src/lib/i86/em/sar2.s04610 sub ax,(bx)04611 mov cx,4(bx)04612 push dx04613 imul cx04614 pop dx04615 add di,ax04616 sar cx,#104617 jnb 1f04618 pop bx04619 pop ax04620 stosb04621 mov di,dx04622 jmp (bx)⌨️ 快捷键说明
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