WebSVN – Kolibri OS – Diff – /kernel/trunk/init.inc



;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 

$Revision: 9899 $
 
align 4
proc mem_test

; round all to pages
        mov     eax, [edi + e820entry.addr.lo]
        cmp     byte [edi + e820entry.type], 1
        jne     .unusable

 
        test    eax, PAGE_SIZE-1
        jz      @f
        neg     eax
        and     eax, PAGE_SIZE-1
        add     [edi + e820entry.addr.lo], eax
        adc     [edi + e820entry.addr.hi], 0
        sub     [edi + e820entry.size.lo], eax
        sbb     [edi + e820entry.size.hi], 0
        jc      .unusable
@@:
        and     [edi + e820entry.size.lo], -PAGE_SIZE
        jz      .unusable
; ignore memory after 4 GiB
        cmp     [edi + e820entry.addr.hi], 0
        jnz     .unusable
        mov     eax, [edi + e820entry.addr.lo]
        cmp     [edi + e820entry.size.hi], 0
        jnz     .overflow
        add     eax, [edi + e820entry.size.lo]
        jnc     @f
.overflow:
        mov     eax, -PAGE_SIZE
@@:
        cmp     edx, eax
        jae     @f
        mov     edx, eax

        add     edx, 31
        and     edx, not 31
        shr     edx, 3
        mov     [pg_data.pagemap_size - OS_BASE], edx

 
        add     edx, (sys_pgmap - OS_BASE)+PAGE_SIZE-1
        and     edx, -PAGE_SIZE

        mov     [tmp_page_tabs], edx
 
        mov     edx, esi
        and     edx, -1024
        cmp     edx, (OS_BASE/PAGE_SIZE)
        jbe     @F
        mov     edx, (OS_BASE/PAGE_SIZE)
        jmp     .set
@@:
        cmp     edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/PAGE_SIZE
        jae     .set
        mov     edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/PAGE_SIZE
.set:
        mov     [pg_data.kernel_pages - OS_BASE], edx

        shr     edx, 10
        mov     [pg_data.kernel_tables - OS_BASE], edx
 
        xor     eax, eax
        mov     edi, sys_proc - OS_BASE

        mov     ecx, 2*PAGE_SIZE/4
        cld
        rep stosd

 
        mov     edx, (sys_proc - OS_BASE + PROC.pdt_0) + (OS_BASE shr 20)

        shr     ecx, 12
.map_low:
        mov     edi, [tmp_page_tabs]
@@:                                   ;
        stosd
        add     eax, PAGE_SIZE
        dec     ecx
        jnz     @B

 
.map_kernel_heap:

        or      eax, PG_SWR
        mov     edi, edx

 
.map_kernel_tabs:
        stosd
        add     eax, PAGE_SIZE
        dec     ecx

        jnz     .map_kernel_tabs

Rev 9715	Rev 9899
Line 3...	Line 3...
3	;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;	3	;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
4	;; Distributed under terms of the GNU General Public License ;;	4	;; Distributed under terms of the GNU General Public License ;;
5	;; ;;	5	;; ;;
6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 7...	Line 7...
7		7
Line 8...	Line 8...
8	$Revision: 9715 $	8	$Revision: 9899 $
9		9
10	align 4	10	align 4
11	proc mem_test	11	proc mem_test
Line 53...	Line 53...
53	; round all to pages	53	; round all to pages
54	mov eax, [edi + e820entry.addr.lo]	54	mov eax, [edi + e820entry.addr.lo]
55	cmp byte [edi + e820entry.type], 1	55	cmp byte [edi + e820entry.type], 1
56	jne .unusable	56	jne .unusable
Line 57...	Line 57...
57		57
58	test eax, 0xFFF	58	test eax, PAGE_SIZE-1
59	jz @f	59	jz @f
60	neg eax	60	neg eax
61	and eax, 0xFFF	61	and eax, PAGE_SIZE-1
62	add [edi + e820entry.addr.lo], eax	62	add [edi + e820entry.addr.lo], eax
63	adc [edi + e820entry.addr.hi], 0	63	adc [edi + e820entry.addr.hi], 0
64	sub [edi + e820entry.size.lo], eax	64	sub [edi + e820entry.size.lo], eax
65	sbb [edi + e820entry.size.hi], 0	65	sbb [edi + e820entry.size.hi], 0
66	jc .unusable	66	jc .unusable
67	@@:	67	@@:
68	and [edi + e820entry.size.lo], not 0xFFF	68	and [edi + e820entry.size.lo], -PAGE_SIZE
69	jz .unusable	69	jz .unusable
70	; ignore memory after 4 GiB	70	; ignore memory after 4 GiB
71	cmp [edi + e820entry.addr.hi], 0	71	cmp [edi + e820entry.addr.hi], 0
72	jnz .unusable	72	jnz .unusable
73	mov eax, [edi + e820entry.addr.lo]	73	mov eax, [edi + e820entry.addr.lo]
74	cmp [edi + e820entry.size.hi], 0	74	cmp [edi + e820entry.size.hi], 0
75	jnz .overflow	75	jnz .overflow
76	add eax, [edi + e820entry.size.lo]	76	add eax, [edi + e820entry.size.lo]
77	jnc @f	77	jnc @f
78	.overflow:	78	.overflow:
79	mov eax, 0xFFFFF000	79	mov eax, -PAGE_SIZE
80	@@:	80	@@:
81	cmp edx, eax	81	cmp edx, eax
82	jae @f	82	jae @f
83	mov edx, eax	83	mov edx, eax
Line 101...	Line 101...
101	add edx, 31	101	add edx, 31
102	and edx, not 31	102	and edx, not 31
103	shr edx, 3	103	shr edx, 3
104	mov [pg_data.pagemap_size - OS_BASE], edx	104	mov [pg_data.pagemap_size - OS_BASE], edx
Line 105...	Line 105...
105		105
106	add edx, (sys_pgmap - OS_BASE)+4095	106	add edx, (sys_pgmap - OS_BASE)+PAGE_SIZE-1
107	and edx, not 4095	107	and edx, -PAGE_SIZE
Line 108...	Line 108...
108	mov [tmp_page_tabs], edx	108	mov [tmp_page_tabs], edx
109		109
110	mov edx, esi	110	mov edx, esi
111	and edx, -1024	111	and edx, -1024
112	cmp edx, (OS_BASE/4096)	112	cmp edx, (OS_BASE/PAGE_SIZE)
113	jbe @F	113	jbe @F
114	mov edx, (OS_BASE/4096)	114	mov edx, (OS_BASE/PAGE_SIZE)
115	jmp .set	115	jmp .set
116	@@:	116	@@:
117	cmp edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/4096	117	cmp edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/PAGE_SIZE
118	jae .set	118	jae .set
119	mov edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/4096	119	mov edx, (HEAP_BASE - OS_BASE + HEAP_MIN_SIZE)/PAGE_SIZE
120	.set:	120	.set:
121	mov [pg_data.kernel_pages - OS_BASE], edx	121	mov [pg_data.kernel_pages - OS_BASE], edx
Line 122...	Line 122...
122	shr edx, 10	122	shr edx, 10
123	mov [pg_data.kernel_tables - OS_BASE], edx	123	mov [pg_data.kernel_tables - OS_BASE], edx
124		124
125	xor eax, eax	125	xor eax, eax
126	mov edi, sys_proc - OS_BASE	126	mov edi, sys_proc - OS_BASE
Line 127...	Line 127...
127	mov ecx, 8192/4	127	mov ecx, 2*PAGE_SIZE/4
128	cld	128	cld
129	rep stosd	129	rep stosd
Line 130...	Line 130...
130		130
131	mov edx, (sys_proc - OS_BASE + PROC.pdt_0) + 0x800; (OS_BASE shr 20)	131	mov edx, (sys_proc - OS_BASE + PROC.pdt_0) + (OS_BASE shr 20)
Line 149...	Line 149...
149	shr ecx, 12	149	shr ecx, 12
150	.map_low:	150	.map_low:
151	mov edi, [tmp_page_tabs]	151	mov edi, [tmp_page_tabs]
152	@@: ;	152	@@: ;
153	stosd	153	stosd
154	add eax, 0x1000	154	add eax, PAGE_SIZE
155	dec ecx	155	dec ecx
156	jnz @B	156	jnz @B
Line 157...	Line 157...
157		157
158	.map_kernel_heap:	158	.map_kernel_heap:
Line 166...	Line 166...
166	or eax, PG_SWR	166	or eax, PG_SWR
167	mov edi, edx	167	mov edi, edx
Line 168...	Line 168...
168		168
169	.map_kernel_tabs:	169	.map_kernel_tabs:
170	stosd	170	stosd
171	add eax, 0x1000	171	add eax, PAGE_SIZE
172	dec ecx	172	dec ecx
Line 173...	Line 173...
173	jnz .map_kernel_tabs	173	jnz .map_kernel_tabs

Subversion Repositories Kolibri OS

(root)/kernel/trunk/init.inc @ 7522 – Rev 9715 → 9899