📄 lib386.txt
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06305 .sri:
06306 pop edx ! return address
06307 cmp eax,4
06308 jne 1f
06309 pop eax
06310 pop ecx
06311 sar eax,cl
06312 push eax
06313 jmp edx
06314 1:
06315 .extern EODDZ
06316 .extern .trp
06317 mov eax,EODDZ
06318 push edx
06319 jmp .trp
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_sti.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06400 .sect .text; .sect .rom; .sect .data; .sect .bss
06401 .sect .text
06402 .define .sti
06403 .define .sts
06404
06405 ! #bytes in ecx
06406 ! address in ebx
06407 ! save edi/esi. they might be register variables
06408 .sts:
06409 pop edx
06410 sar ecx,1
06411 jnb 1f
06412 pop eax
06413 movb (ebx),al
06414 jmp edx
06415 1:
06416 sar ecx,1
06417 jnb 1f
06418 pop eax
06419 o16 mov (ebx),ax
06420 jmp edx
06421 1:
06422 push edx
06423 mov edx,edi
06424 mov edi,ebx
06425 pop ebx
06426 jmp 1f
06427 .sti:
06428 ! only called with count >> 4
06429 mov edx,edi
06430 mov edi,ebx
06431 pop ebx
06432 sar ecx,2
06433 1:
06434 mov eax,esi
06435 mov esi,esp
06436 rep movs
06437 mov esp,esi
06438 mov edi,edx
06439 mov esi,eax
06440 jmp ebx
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_stop.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06500 .sect .text; .sect .rom; .sect .data; .sect .bss
06501 .sect .text
06502 .define .stop
06503 .stop:
06504 jmp ___exit
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_strhp.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06600 .sect .text; .sect .rom; .sect .data; .sect .bss
06601 .sect .text
06602 .define .strhp
06603 .extern .reghp, .limhp, EHEAP, .trp
06604
06605 .strhp:
06606 pop ebx
06607 pop eax
06608 mov (.reghp),eax
06609 cmp eax,(.limhp)
06610 jb 1f
06611 add eax,02000
06612 and eax,~0777
06613 push ebx
06614 push eax
06615 call __brk
06616 pop ecx
06617 pop ebx
06618 cmp eax,-1
06619 je 2f
06620 1:
06621 mov (.limhp),ecx
06622 jmp ebx
06623 2:
06624 mov eax,EHEAP
06625 push ebx
06626 jmp .trp
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_trp.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06700 .sect .text; .sect .rom; .sect .data; .sect .bss
06701 .sect .text
06702 .define .trp
06703 .extern .trppc, .stop
06704
06705 ! eax is trap number
06706 .trp:
06707 xor ebx,ebx
06708 xchg ebx,(.trppc)
06709 test ebx,ebx
06710 jz 2f
06711 push eax
06712 call ebx
06713 pop eax
06714 ret
06715 2:
06716 push eax
06717 call .stop
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_unknown.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06800 .sect .text; .sect .rom; .sect .data; .sect .bss
06801 .sect .text
06802 .define .unknown
06803 .extern EILLINS, .fat
06804
06805 .unknown:
06806 mov eax,EILLINS
06807 push eax
06808 jmp .fat
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/em/em_xor.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
06900 .sect .text; .sect .rom; .sect .data; .sect .bss
06901 .sect .text
06902 .define .xor
06903
06904 ! #bytes in ecx
06905 .xor:
06906 pop ebx ! return address
06907 mov edx,edi
06908 mov edi,esp
06909 add edi,ecx
06910 sar ecx,2
06911 1:
06912 pop eax
06913 xor eax,(edi)
06914 stos
06915 loop 1b
06916 mov edi,edx
06917 jmp ebx
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/head/em_abs.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
07000 /* $Header: em_abs.h,v 1.3 87/03/10 08:58:45 ceriel Exp $ */
07001 /*
07002 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
07003 * See the copyright notice in the ACK home directory, in the file "Copyright".
07004 */
07005 #define LINO_AD 0
07006 #define FILN_AD 4
07007
07008 #define LINO (*(int *)(_hol0()+LINO_AD))
07009 #define FILN (*(char **)(_hol0()+FILN_AD))
07010
07011 #define EARRAY 0
07012 #define ERANGE 1
07013 #define ESET 2
07014 #define EIOVFL 3
07015 #define EFOVFL 4
07016 #define EFUNFL 5
07017 #define EIDIVZ 6
07018 #define EFDIVZ 7
07019 #define EIUND 8
07020 #define EFUND 9
07021 #define ECONV 10
07022
07023 #define ESTACK 16
07024 #define EHEAP 17
07025 #define EILLINS 18
07026 #define EODDZ 19
07027 #define ECASE 20
07028 #define EMEMFLT 21
07029 #define EBADPTR 22
07030 #define EBADPC 23
07031 #define EBADLAE 24
07032 #define EBADMON 25
07033 #define EBADLIN 26
07034 #define EBADGTO 27
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/head/em_head.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
07100 #
07101 .sect .text; .sect .rom; .sect .data; .sect .bss
07102 .define ERANGE,ESET,EHEAP,ECASE,EILLINS,EIDIVZ,EODDZ
07103 .define .trppc, .ignmask
07104
07105 ERANGE = 1
07106 ESET = 2
07107 EIDIVZ = 6
07108 EHEAP = 17
07109 EILLINS = 18
07110 EODDZ = 19
07111 ECASE = 20
07112
07113 #include <em_abs.h>
07114
07115 .sect .data
07116 .trppc:
07117 .data4 0
07118 .ignmask:
07119 .data4 EIOVFL | EIUND | ECONV | EFOVFL | EFUNFL
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/misc/alloca.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
07200 #
07201 ! alloca() - allocate space on the stack Author: Kees J. Bot
07202 ! 2 Dec 1993
07203 .sect .text; .sect .rom; .sect .data; .sect .bss
07204
07205 .sect .text
07206 .align 16
07207 .define _alloca
07208 _alloca:
07209 #if __ACK__
07210 pop ecx ! Return address
07211 pop eax ! Bytes to allocate
07212 add eax, 2*4+3 ! Add space for two saved register variables
07213 andb al, 0xFC ! Align
07214 mov ebx, esp ! Keep current esp
07215 sub esp, eax ! Lower stack
07216 mov eax, esp ! Return value
07217 push 4(ebx) ! Push what is probably the saved esi
07218 push (ebx) ! Saved edi
07219 ! Now ACK can still do:
07220 ! pop edi; pop esi; leave; ret
07221 push eax ! Dummy argument
07222 jmp ecx
07223 #else
07224 pop ecx ! Return address
07225 pop eax ! Bytes to allocate
07226 add eax, 3
07227 andb al, 0xFC ! Align
07228 sub esp, eax ! Lower stack
07229 mov eax, esp ! Return value
07230 push eax ! Dummy argument
07231 jmp ecx
07232 #endif
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/misc/getprocessor.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
07300 ! getprocessor() - determine processor type Author: Kees J. Bot
07301 ! 26 Jan 1994
07302
07303 .sect .text; .sect .rom; .sect .data; .sect .bss
07304 .sect .text
07305
07306 ! int getprocessor(void);
07307 ! Return 386, 486, 586, ...
07308
07309 .define _getprocessor
07310
07311 _getprocessor:
07312 push ebp
07313 mov ebp, esp
07314 and esp, 0xFFFFFFFC ! Align stack to avoid AC fault
07315 mov ecx, 0x00040000 ! Try to flip the AC bit introduced on the 486
07316 call flip
07317 mov eax, 386 ! 386 if it didn't react to "flipping"
07318 jz gotprocessor
07319 mov ecx, 0x00200000 ! Try to flip the ID bit introduced on the 586
07320 call flip
07321 mov eax, 486 ! 486 if it didn't react
07322 jz gotprocessor
07323 pushf
07324 pusha ! Save the world
07325 mov eax, 1
07326 .data1 0x0F, 0xA2 ! CPUID instruction tells the processor type
07327 andb ah, 0x0F ! Extract the family (5, 6, ...)
07328 movzxb eax, ah
07329 imul eax, 100 ! 500, 600, ...
07330 add eax, 86 ! 586, 686, ...
07331 mov 7*4(esp), eax ! Pass eax through
07332 popa
07333 popf
07334 gotprocessor:
07335 leave
07336 ret
07337
07338 flip:
07339 pushf ! Push eflags
07340 pop eax ! eax = eflags
07341 mov edx, eax ! Save original eflags
07342 xor eax, ecx ! Flip the bit to test
07343 push eax ! Push modified eflags value
07344 popf ! Load modified eflags register
07345 pushf
07346 pop eax ! Get it again
07347 push edx
07348 popf ! Restore original eflags register
07349 xor eax, edx ! See if the bit changed
07350 test eax, ecx
07351 ret
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/i386/misc/iolib.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
07400 ! Some I/O related routines like:
07401 ! unsigned char inb(int port);
07402 ! unsigned short inw(int port);
07403 ! void outb(int port, int value);
07404 ! void outw(int port, int value);
07405 ! void rep_inb(int port, unsigned char *buf, size_t count);
07406 ! void rep_inw(int port, unsigned short *buf, size_t count);
07407 ! void rep_outb(int port, unsigned char *buf, size_t count);
07408 ! void rep_outw(int port, unsigned short *buf, size_t count);
07409 ! void intr_enable(void);
07410 ! void intr_disable(void);
07411
07412 .sect .text; .sect .rom; .sect .data; .sect .bss
07413
07414 .sect .text
07415 .define _inb
07416 _inb:
07417 push ebp
07418 mov ebp, esp
07419 mov edx, 8(ebp) ! port
07420 xor eax, eax
07421 inb dx ! read 1 byte
07422 pop ebp
07423 ret
07424
07425 .define _inw
07426 _inw:
07427 push ebp
07428 mov ebp, esp
07429 mov edx, 8(ebp) ! port
07430 xor eax, eax
07431 o16 in dx ! read 1 word
07432 pop ebp
07433 ret
07434
07435 .define _outb
07436 _outb:
07437 push ebp
07438 mov ebp, esp
07439 mov edx, 8(ebp) ! port
07440 mov eax, 8+4(ebp) ! value
07441 outb dx ! output 1 byte
07442 pop ebp
07443 ret
07444
07445 .define _outw
07446 _outw:
07447 push ebp
07448 mov ebp, esp
07449 mov edx, 8(ebp) ! port
07450 mov eax, 8+4(ebp) ! value
07451 o16 out dx ! output 1 word
07452 pop ebp
07453 ret
07454
07455 .define _rep_inb
07456 _rep_inb:
07457 push ebp
07458 mov ebp, esp
07459 push edi
07460 mov edx, 8(ebp) ! port
07461 mov edi, 12(ebp) ! buf
07462 mov ecx, 16(ebp) ! byte count
07463 rep
07464 inb dx ! input many bytes
07465 pop edi
07466 pop ebp
07467 ret
07468
07469 .define _rep_inw
07470 _rep_inw:
07471 push ebp
07472 mov ebp, esp
07473 push edi
07474 mov edx, 8(ebp) ! port
07475 mov edi, 12(ebp) ! buf
07476 mov ecx, 16(ebp) ! byte count
07477 shr ecx, 1 ! word count
07478 rep
07479 o16 in dx ⌨️ 快捷键说明
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