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Advanced Power Management

SYSTEM CALL

eax = 70

dx = íîìåð ôóíêöèè APM BIOS (àíàëîãè÷åí ax â ðåàëüíîì ðåæèìå)

îñòàëüíûå (bx, cx) ðåãèñòðû ïî ñïåöèôèêàöèè (ñì. apm.txt)

ðåçóëüòàò : ïî ñïåöèôèêàöèè (âêëþ÷àÿ CF), ñòàðøàÿ ÷àñòü 32 áèòíûõ ðåãèñòðîâ íå îïðåäåëåíà

MEMORY MAP

Boot:

	0x9040 - dword - entry point of APM BIOS

	0x9044 -  word - version (BCD)

	0x9046 -  word - flags

ÈÇÌÅÍÅÍÈß

sys32.inc

syscall.inc

kernel.asm

bootcode.inc

##############[core\sys32.inc]#####################

Òðè íîâûõ äåñêðèïòîðà

.............

.............

; GDT TABLE

gdts:

        dw     gdte-$-1

        dd     gdts

        dw     0

int_code_l:

os_code_l:

        dw     0xffff

        dw     0x0000

        db     0x00

        dw     11011111b *256 +10011010b

        db     0x00

int_data_l:

os_data_l:

        dw     0xffff

        dw     0x0000

        db     0x00

        dw     11011111b *256 +10010010b

        db     0x00

; --------------- APM ---------------------

apm_code_32:

        dw     0x10		; limit 64kb

        db     0, 0, 0

        dw     11011111b *256 +10011010b

        db     0x00

apm_code_16:

        dw     0x10

        db     0, 0, 0

        dw     10011111b *256 +10011010b

        db     0x00

apm_data_16:

        dw     0x10

        db     0, 0, 0

        dw     10011111b *256 +10010010b

        db     0x00

; -----------------------------------------

app_code_l:

      dw ((0x80000000-std_application_base_address) shr 12) and 0xffff

      dw 0

      db 0

      dw 11010000b*256+11111010b+256*((0x80000000-std_application_base_address) shr 28)

      db std_application_base_address shr 24

app_data_l:

      dw (0x80000000-std_application_base_address) shr 12 and 0xffff

      dw 0

      db 0

      dw 11010000b*256+11110010b+256*((0x80000000-std_application_base_address) shr 28)

      db std_application_base_address shr 24

graph_data_l:

        dw     0x3ff

        dw     0x0000

        db     0x00

        dw     11010000b *256 +11110010b

        db     0x00

tss0_l:

      times (max_processes+10) dd 0,0

.............

.............

##############[core\syscall.inc]###################

.............

.............

      dd undefined_syscall       ; 65-UTF

      dd sys_process_def         ; 66-Process definitions - keyboard

      dd sys_window_move         ; 67-Window move or resize

      dd sys_internal_services   ; 68-Some internal services

      dd sys_debug_services      ; 69-Debug

      dd sys_apm                 ; 70-APM

.............

.............

##############[kernel.asm]#########################

×àñòü 1 (ïîñëå ìåòêè "; SAVE REAL MODE VARIABLES"):

.............

.............

; SAVE REAL MODE VARIABLES

; --------------- APM ---------------------

	mov	eax, [0x2f0000 + 0x9040]	; entry point

	mov	dword[apm_entry], eax

	mov	word [apm_entry + 4], apm_code_32 - gdts

	mov	eax, [0x2f0000 + 0x9044]	; version & flags

	mov	[apm_vf], eax

; -----------------------------------------

.............

.............

×àñòü 2 (ñèñòåìíûé âûçîâ, ðàñïîëîæåíèå íå êðèòè÷íî,

ÿ ðàñïîëîæèë ïåðåä ìåòêîé "undefined_syscall:")

.............

.............

; --------------- APM ---------------------

apm_entry	dp	0

apm_vf		dd	0

align 4

sys_apm:

	cmp	word [apm_vf], 0	; Check APM BIOS enable

	jne	@f

	or	[esp + 40], byte 1	; error

	mov	[esp + 36], dword 8	; 32-bit protected-mode interface not supported

	ret

@@:	xchg	eax, ecx

	xchg	ebx, ecx

	cmp	al, 3

	ja	@f

	and	[esp + 40], byte 0xfe	; emulate func 0..3 as func 0

	mov	eax, [apm_vf]

	mov	[esp + 36], eax

	shr	eax, 16

	mov	[esp + 32], eax

	ret

@@:	call	pword [apm_entry]	; call APM BIOS

	mov	[esp + 8 ], edi

	mov	[esp + 12], esi

	mov	[esp + 24], ebx

	mov	[esp + 28], edx

	mov	[esp + 32], ecx

	mov	[esp + 36], eax

	setc	al

	and	[esp + 40], byte 0xfe

	or	[esp + 40], al

	ret

; -----------------------------------------

align 4

undefined_syscall:                      ; Undefined system call

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.............

##############[boot\bootcode.inc]##################

Ïåðåä ìåòêîé "; DISPLAY VESA INFORMATION"

.............

.............

; --------------- APM ---------------------

	push	0

	pop	es

	mov	word [es : 0x9044], 0		; ver = 0.0 (APM not found)

	mov	ax, 0x5300

	xor	bx, bx

	int	0x15

	jc	apm_end				; APM not found

	test	cx, 2

	jz	apm_end				; APM 32-bit protected-mode interface not supported

	mov	[es : 0x9044], ax		; Save APM Version

	mov	[es : 0x9046], cx		; Save APM flags

	; Write APM ver ----

	jmp	@f

msg_apm:db	' APM x.x ', 0

@@:	and	ax, 0xf0f

	add	ax, '00'

	mov	[msg_apm - 0x10000 + 5], ah

	mov	[msg_apm - 0x10000 + 7], al

	_setcursor 0, 3

	mov	si, msg_apm - 0x10000

	call	printplain

	_setcursor d80x25_top_num,0

	; ------------------

	mov	ax, 0x5304			; Disconnect interface

	xor	bx, bx

	int	0x15

	mov	ax, 0x5303			; Connect 32 bit mode interface

	xor	bx, bx

	int	0x15

	; init selectors

	movzx	eax, ax ; real-mode segment base address of protected-mode 32-bit code segment

	shl	eax, 4

	mov	[apm_code_32 - 0x10000 + 2], ax

	shr	eax, 16

	mov	[apm_code_32 - 0x10000 + 4], al

	movzx	ecx, cx ; real-mode segment base address of protected-mode 16-bit code segment

	shl	ecx, 4

	mov	[apm_code_16 - 0x10000 + 2], cx

	shr	ecx, 16

	mov	[apm_code_16 - 0x10000 + 4], cl

	movzx	edx, dx ; real-mode segment base address of protected-mode 16-bit data segment

	shl	edx, 4

	mov	[apm_data_16 - 0x10000 + 2], dx

	shr	edx, 16

	mov	[apm_data_16 - 0x10000 + 4], dl

	mov	[es : 0x9040], ebx              ; offset of APM entry point

apm_end:

; -----------------------------------------

; DISPLAY VESA INFORMATION

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