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1 ;--------------------------------------------------------
2 ; File Created by SDCC : free open source ANSI-C Compiler
3 ; Version 3.5.0 #9253 (Mar 24 2016) (Linux)
4 ; This file was generated Wed Aug 23 21:44:59 2017
5 ;--------------------------------------------------------
6 .module memory
7 .optsdcc -mz80
8
9 ;--------------------------------------------------------
10 ; Public variables in this module
11 ;--------------------------------------------------------
12 .globl _pages_table
13 .globl _mmu_write_table
14 .globl _page_map
15 .globl _page_unmap
16 ;--------------------------------------------------------
17 ; special function registers
18 ;--------------------------------------------------------
19 ;--------------------------------------------------------
20 ; ram data
21 ;--------------------------------------------------------
22 .area _DATA
0000 23 _pages_table::
0000 24 .ds 192
25 ;--------------------------------------------------------
26 ; ram data
27 ;--------------------------------------------------------
28 .area _INITIALIZED
29 ;--------------------------------------------------------
30 ; absolute external ram data
31 ;--------------------------------------------------------
32 .area _DABS (ABS)
33 ;--------------------------------------------------------
34 ; global & static initialisations
35 ;--------------------------------------------------------
36 .area _HOME
37 .area _GSINIT
38 .area _GSFINAL
39 .area _GSINIT
40 ;--------------------------------------------------------
41 ; Home
42 ;--------------------------------------------------------
43 .area _HOME
44 .area _HOME
45 ;--------------------------------------------------------
46 ; code
47 ;--------------------------------------------------------
48 .area _CODE
49 ;kernel/memory.c:5: int mmu_write_table(void)
50 ; ---------------------------------
51 ; Function mmu_write_table
52 ; ---------------------------------
0000 53 _mmu_write_table::
54 ;kernel/memory.c:9: for (i = 0; i < PAGES_MAX_COUNT; i++) {
0000 21 00 00 [10] 55 ld hl,#0x0000
0003 56 00102$:
0003 23 [ 6] 57 inc hl
0004 7D [ 4] 58 ld a,l
0005 D6 20 [ 7] 59 sub a, #0x20
0007 7C [ 4] 60 ld a,h
0008 17 [ 4] 61 rla
0009 3F [ 4] 62 ccf
000A 1F [ 4] 63 rra
000B DE 80 [ 7] 64 sbc a, #0x80
000D 38 F4 [12] 65 jr C,00102$
66 ;kernel/memory.c:15: return 0;
000F 21 00 00 [10] 67 ld hl,#0x0000
0012 C9 [10] 68 ret
69 ;kernel/memory.c:18: int page_map(int page, int pid, uint16_t addr)
70 ; ---------------------------------
71 ; Function page_map
72 ; ---------------------------------
0013 73 _page_map::
0013 DD E5 [15] 74 push ix
0015 DD 21 00 00 [14] 75 ld ix,#0
0019 DD 39 [15] 76 add ix,sp
77 ;kernel/memory.c:20: if (page >= PAGES_MAX_COUNT)
001B DD 7E 04 [19] 78 ld a,4 (ix)
001E D6 20 [ 7] 79 sub a, #0x20
0020 DD 7E 05 [19] 80 ld a,5 (ix)
0023 17 [ 4] 81 rla
0024 3F [ 4] 82 ccf
0025 1F [ 4] 83 rra
0026 DE 80 [ 7] 84 sbc a, #0x80
0028 38 05 [12] 85 jr C,00102$
86 ;kernel/memory.c:21: return -1;
002A 21 FF FF [10] 87 ld hl,#0xFFFF
002D 18 38 [12] 88 jr 00105$
002F 89 00102$:
90 ;kernel/memory.c:23: if (pages_table[page].used)
002F 11r00r00 [10] 91 ld de,#_pages_table+0
0032 DD 4E 04 [19] 92 ld c,4 (ix)
0035 DD 46 05 [19] 93 ld b,5 (ix)
0038 69 [ 4] 94 ld l, c
0039 60 [ 4] 95 ld h, b
003A 29 [11] 96 add hl, hl
003B 09 [11] 97 add hl, bc
003C 29 [11] 98 add hl, hl
003D 19 [11] 99 add hl,de
003E 4D [ 4] 100 ld c,l
003F 44 [ 4] 101 ld b,h
0040 7E [ 7] 102 ld a,(hl)
0041 E6 01 [ 7] 103 and a,#0x01
0043 28 05 [12] 104 jr Z,00104$
105 ;kernel/memory.c:24: return -2;
0045 21 FE FF [10] 106 ld hl,#0xFFFE
0048 18 1D [12] 107 jr 00105$
004A 108 00104$:
109 ;kernel/memory.c:26: pages_table[page].addr = addr;
004A 59 [ 4] 110 ld e, c
004B 50 [ 4] 111 ld d, b
004C 13 [ 6] 112 inc de
004D 13 [ 6] 113 inc de
004E C5 [11] 114 push bc
004F 21 0A 00 [10] 115 ld hl, #0x000A
0052 39 [11] 116 add hl, sp
0053 01 04 00 [10] 117 ld bc, #0x0004
0056 ED B0 [21] 118 ldir
0058 C1 [10] 119 pop bc
120 ;kernel/memory.c:27: pages_table[page].pid = pid;
0059 69 [ 4] 121 ld l, c
005A 60 [ 4] 122 ld h, b
005B 23 [ 6] 123 inc hl
005C DD 7E 06 [19] 124 ld a,6 (ix)
005F 77 [ 7] 125 ld (hl),a
126 ;kernel/memory.c:29: pages_table[page].used = 1;
0060 0A [ 7] 127 ld a,(bc)
0061 F6 01 [ 7] 128 or a,#0x01
0063 02 [ 7] 129 ld (bc),a
130 ;kernel/memory.c:30: return 0;
0064 21 00 00 [10] 131 ld hl,#0x0000
0067 132 00105$:
0067 DD E1 [14] 133 pop ix
0069 C9 [10] 134 ret
135 ;kernel/memory.c:33: int page_unmap(int page)
136 ; ---------------------------------
137 ; Function page_unmap
138 ; ---------------------------------
006A 139 _page_unmap::
006A DD E5 [15] 140 push ix
006C DD 21 00 00 [14] 141 ld ix,#0
0070 DD 39 [15] 142 add ix,sp
143 ;kernel/memory.c:35: if (page >= PAGES_MAX_COUNT)
0072 DD 7E 04 [19] 144 ld a,4 (ix)
0075 D6 20 [ 7] 145 sub a, #0x20
0077 DD 7E 05 [19] 146 ld a,5 (ix)
007A 17 [ 4] 147 rla
007B 3F [ 4] 148 ccf
007C 1F [ 4] 149 rra
007D DE 80 [ 7] 150 sbc a, #0x80
007F 38 05 [12] 151 jr C,00102$
152 ;kernel/memory.c:36: return -1;
0081 21 FF FF [10] 153 ld hl,#0xFFFF
0084 18 22 [12] 154 jr 00105$
0086 155 00102$:
156 ;kernel/memory.c:38: if (pages_table[page].used == 0)
0086 11r00r00 [10] 157 ld de,#_pages_table+0
0089 DD 4E 04 [19] 158 ld c,4 (ix)
008C DD 46 05 [19] 159 ld b,5 (ix)
008F 69 [ 4] 160 ld l, c
0090 60 [ 4] 161 ld h, b
0091 29 [11] 162 add hl, hl
0092 09 [11] 163 add hl, bc
0093 29 [11] 164 add hl, hl
0094 19 [11] 165 add hl,de
0095 5D [ 4] 166 ld e,l
0096 54 [ 4] 167 ld d,h
0097 7E [ 7] 168 ld a,(hl)
0098 E6 01 [ 7] 169 and a,#0x01
009A 20 05 [12] 170 jr NZ,00104$
171 ;kernel/memory.c:39: return -2;
009C 21 FE FF [10] 172 ld hl,#0xFFFE
009F 18 07 [12] 173 jr 00105$
00A1 174 00104$:
175 ;kernel/memory.c:41: pages_table[page].used = 0;
00A1 1A [ 7] 176 ld a,(de)
00A2 E6 FE [ 7] 177 and a,#0xFE
00A4 12 [ 7] 178 ld (de),a
179 ;kernel/memory.c:42: return 0;
00A5 21 00 00 [10] 180 ld hl,#0x0000
00A8 181 00105$:
00A8 DD E1 [14] 182 pop ix
00AA C9 [10] 183 ret
184 .area _CODE
185 .area _INITIALIZER
186 .area _CABS (ABS)
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