1 ; 2 ;SOS Kernal Full 3 ;(C) Stephen Gray 2017 4 ;All rights reserved 5 ; 6 %define PIC1 0x20 ;IO base address for master PIC */ 7 %define PIC2 0xA0 ; IO base address for slave PIC */ 8 %define PIC1_COMMAND PIC1 9 %define PIC1_DATA (PIC1+1) 10 %define PIC2_COMMAND PIC2 11 %define PIC2_DATA (PIC2+1) 12 %define PIC_EOI 0x20 ;End-of-interrupt command code */ 13 %define PIC_MO 0x20 ;Offset for master 14 %define PIC_SO 0x28 ;Offset for slave 15 %define ICW1_ICW4 0x01 ; ICW4 (not) needed */ 16 %define ICW1_SINGLE 0x02 ;Single (cascade) mode */ 17 %define ICW1_INTERVAL4 0x04 ; Call address interval 4 (8) */ 18 %define ICW1_LEVEL 0x08 ; Level triggered (edge) mode */ 19 %define ICW1_INIT 0x10 ; Initialization - required! */ 20 21 %define ICW4_8086 0x01 ; 8086/88 (MCS-80/85) mode */ 22 %define ICW4_AUTO 0x02 ; Auto (normal) EOI */ 23 %define ICW4_BUF_SLAVE 0x08 ; Buffered mode/slave */ 24 %define ICW4_BUF_MASTER 0x0C ; Buffered mode/master */ 25 %define ICW4_SFNM 0x10 ; Special fully nested (not) */ 26 27 [BITS 64] 28 org 0x1000000 29 30 00000000 E9CB040000 jmp Kern_Start 31 32 ;Messages 33 00000005 2020476F2061776179- db ' Go away please hackers ' 33 0000000E 20706C656173652068- 33 00000017 61636B6572732020 34 0000001F 0000 STK: dw 0 35 00000021 4B4900 db 'KI',0 36 00000024 496E74657272757074- PINT db 'Interrupt!',0 36 0000002D 2100 37 0000002F 0400 DIV0 dw 4 38 00000031 446976696465206572- db 'Divide error ',0 38 0000003A 726F72202000 39 00000040 0500 Deb_Exc dw 5 40 00000042 446562756720457863- db 'Debug Exception ' ,0 40 0000004B 657074696F6E202000 41 00000054 0600 Breakp dw 6 42 00000056 427265616B706F696E- db 'Breakpoint ',0 42 0000005F 74202000 43 00000063 0700 Overf dw 7 44 00000065 4F766572666C6F7720- db 'Overflow ',0 44 0000006E 2000 45 00000070 0800 Bounds dw 8 46 00000072 426F756E6473204368- db 'Bounds Check ',0 46 0000007B 65636B202000 47 00000081 0900 Inv_Op dw 9 48 00000083 496E76616C6964204F- db 'Invalid Opcode ',0 48 0000008C 70636F6465202000 49 00000094 0A00 Copr_No dw 10 50 00000096 436F70726F63657373- db 'Coprocessor not available ',0 50 0000009F 6F72206E6F74206176- 50 000000A8 61696C61626C652020- 50 000000B1 00 51 000000B2 0B00 Sys_Err dw 11 52 000000B4 53797374656D206572- db 'System error Double Fault ',0 52 000000BD 726F7220446F75626C- 52 000000C6 65204661756C742000 53 000000CF 0C00 Cop_Seg dw 12 54 000000D1 436F70726F63657373- db 'Coprocessor Segment Overrun ',0 54 000000DA 6F72205365676D656E- 54 000000E3 74204F76657272756E- 54 000000EC 202000 55 000000EF 0D00 Inv_Tss dw 13 56 000000F1 496E76616C69642054- db 'Invalid TSS ',0 56 000000FA 5353202000 57 000000FF 0E00 Seg_Not dw 14 58 00000101 5365676D656E74206E- db 'Segment not present ',0 58 0000010A 6F742070726573656E- 58 00000113 74202000 59 00000117 0F00 Stac_Ex dw 15 60 00000119 537461636B20657863- db 'Stack exception ',0 60 00000122 657074696F6E202000 61 0000012B 1000 Gen_Pro dw 16 62 0000012D 47656E6572616C2070- db 'General protection fault ',0 62 00000136 726F74656374696F6E- 62 0000013F 206661756C74202000 63 00000148 1100 P_Fault dw 17 64 0000014A 50616765206661756C- db 'Page fault ',0 64 00000153 74202000 65 00000157 1200 Cop_Err dw 18 66 00000159 436F70726F63657373- db 'Coprocessor Error ',0 66 00000162 6F72204572726F7220- 66 0000016B 2000 67 0000016D 506C65617365205265- Turn_O db 'Please Reboot and if the error persists, call support ',0 67 00000176 626F6F7420616E6420- 67 0000017F 696620746865206572- 67 00000188 726F72207065727369- 67 00000191 7374732C2063616C6C- 67 0000019A 20737570706F727420- 67 000001A3 2000 68 69 70 000001A5 90 align 8 71 %include "C:\Users\Stephen\Documents\NASM\cls.asm" ;include clear screen 1 <1> ; 2 <1> ;Clear screen text mode 3 <1> ; 4 <1> [BITS 64] 5 <1> cls: 6 000001A8 57 <1> push rdi 7 000001A9 50 <1> push rax 8 000001AA 51 <1> push rcx 9 000001AB BF00800B00 <1> mov rdi, 0xB8000 ; Set the destination index to 0xB8000. 10 000001B0 48B820002000200020- <1> mov rax, 0x0020002000200020 ; Set the A-register to 0x1F201F201F201F20 i.e. black space 10 000001B9 00 <1> 11 000001BA B9F4010000 <1> mov rcx, 500 ; Set the C-register to 500 i.e. ((80*25)*2)/8 12 000001BF F348AB <1> rep stosq ; Clear the screen. 13 000001C2 59 <1> pop rcx 14 000001C3 58 <1> pop rax 15 000001C4 5F <1> pop rdi 16 000001C5 C3 <1> ret 72 %include "C:\Users\Stephen\Documents\NASM\printc.asm" ;include print character at x,y r8,r9 r10=colour r11=string address 1 <1> ; 2 <1> ;printc 3 <1> ;prints a string ending in 0 at position r8,r9 from r11 r10=colour 4 <1> ; 5 <1> ; 6 <1> ;Dec Hex Binary Color 7 <1> ;0 0 0000 Black 8 <1> ;1 1 0001 Blue 9 <1> ;2 2 0010 Green 10 <1> ;3 3 0011 Cyan 11 <1> ;4 4 0100 Red 12 <1> ;5 5 0101 Magenta 13 <1> ;6 6 0110 Brown 14 <1> ;7 7 0111 Light Gray 15 <1> ;8 8 1000 Dark Gray 16 <1> ;9 9 1001 Light Blue 17 <1> ;10 A 1010 Light Green 18 <1> ;11 B 1011 Light Cyan 19 <1> ;12 C 1100 Light Red 20 <1> ;13 D 1101 Light Magenta 21 <1> ;14 E 1110 Yellow 22 <1> ;15 F 1111 White 23 <1> 24 <1> [bits 64] 25 <1> ;rdi contains address of string 26 <1> printc: 27 <1> 28 000001C6 4152 <1> push r10 ;save colour; 29 000001C8 B8A0000000 <1> mov rax,160 ;one line of bytes 30 000001CD 49F7E1 <1> mul r9 ;get line on screen 31 000001D0 49D1E0 <1> shl r8,1 ;multiply r8*2 32 000001D3 4C01C0 <1> add rax,r8 ;add the x amount 33 000001D6 480500800B00 <1> add rax,0xb8000 ;memory position 34 000001DC 49C1E208 <1> shl r10,8 ;attribute in top half of word 35 <1> nxtchr: 36 000001E0 490FBE1B <1> movsx rbx, byte [r11] ;text chr 37 000001E4 4883FB00 <1> cmp rbx,0 ;string ended? 38 000001E8 740F <1> jz ender 39 000001EA 4C09D3 <1> or rbx,r10 ;add text colour 40 <1> ;shl rbx,8 ;move text color 41 000001ED 668918 <1> mov [rax],bx ;store chr+attribute 42 000001F0 4883C002 <1> add rax,2 43 000001F4 49FFC3 <1> inc r11 44 000001F7 EBE7 <1> jmp nxtchr ;back for the next one 45 <1> ender: 46 000001F9 415A <1> pop r10 47 000001FB C3 <1> ret 48 <1> 73 %include "C:\Users\Stephen\Documents\NASM\hd.asm" ;include read hd functions 1 <1> ;DexOS HD functions 2 <1> ;(c) Craig Bamford 3 <1> ; 4 <1> 5 <1> ; 6 <1> ;push rax - rdi macro 7 <1> ; 8 <1> %macro pushraxrdi 0 9 <1> 10 <1> push rax 11 <1> push rcx 12 <1> push rdx 13 <1> push rbx 14 <1> push rsp 15 <1> push rbp 16 <1> push rsi 17 <1> push rdi 18 <1> 19 <1> %endmacro 20 <1> 21 <1> ; 22 <1> ;pop rax - rdi macro 23 <1> ; 24 <1> %macro popraxrdi 0 25 <1> 26 <1> pop rdi 27 <1> pop rsi 28 <1> pop rbp 29 <1> pop rsp 30 <1> pop rbx 31 <1> pop rdx 32 <1> pop rcx 33 <1> pop rax 34 <1> 35 <1> %endmacro 36 <1> 37 000001FC BE010000 <1> PartitionTable dd 446 38 00000200 202053746F70206B6E- <1> db ' Stop knicking my code Hackers !!!! ' 38 00000209 69636B696E67206D79- <1> 38 00000212 20636F646520486163- <1> 38 0000021B 6B6572732021212121- <1> 38 00000224 2020 <1> 39 <1> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 40 00000226 00000000 <1> LbaFirstSecOfPartition dd 0 ; Lba of First Sector Of Partition 41 0000022A 00000000 <1> NumBlocksInPartition dd 0 ; Number of Blocks In Partition 42 0000022E 00 <1> FileSysType db 0 ; File sys type 43 0000022F 00 <1> ActiveByte db 0 ; Is this partition bootable 44 00000230 00 <1> FS_GetPartionNumber db 0 ; Partion number 45 <1> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 46 00000231 90 <1> align 4 47 00000234 00000000F0010000F0- <1> BaseTable dd 0x000, 0x1f0, 0x1f0, 0x170, 0x170, 0x1e8, 0x1e8, 0x168, 0x168 47 0000023D 010000700100007001- <1> 47 00000246 0000E8010000E80100- <1> 47 0000024F 006801000068010000 <1> 48 00000258 E0010000E001000060- <1> dd 0x1e0, 0x1e0, 0x160, 0x160 48 00000261 01000060010000 <1> 49 <1> 50 <1> align 4 51 00000268 00000000 <1> HddBaseFS dd 0 ; First device =0x1f0 for primary, second =0x170 for secondary device. 52 0000026C 00 <1> MasterSlave db 0 ; Master = 0x00 Slave = 0x10. 53 0000026D 00 <1> FS_RW_SectorErrorNum db 0 ; Store the error number in. 54 0000026E 00000000 <1> HddScratchBuffer dd 0 ; Place to store sector buffer address. 55 00000272 00000000 <1> FS_RW_Sector dd 0 ; Sector size var. 56 00000276 00000000 <1> FS_RW_Count dd 0 ; Count, var for sectors to read/write. 57 <1> 58 <1> ;=======================================================; 59 <1> ; FS_ReadWriteSectorSetUp ; 60 <1> ;-------------------------------------------------------; 61 <1> ; Input: ; 62 <1> ; EAX = Unit (drive) ; 63 <1> ; 0 = Floppy ; 64 <1> ; 1 = primary device (0x1f0), master(0x00) ; 65 <1> ; 2 = primary device (0x1f0), slave(0x10) ; 66 <1> ; 3 = secondary device (0x170), master(0x00) ; 67 <1> ; 4 = secondary device (0x170), slave(0x10) ; 68 <1> ; ; 69 <1> ; EDI = Buffer ; 70 <1> ; ECX = Count (just one for now) ; 71 <1> ; ; 72 <1> ; Output: ; 73 <1> ; AH = 0 for success ; 74 <1> ; AH = Nonzero for failure ; 75 <1> ; 1 = Not implemented yet ; 76 <1> ; 2 = Unit to high ; 77 <1> ; (100%) ; 78 <1> ;.......................................................; 79 <1> 80 <1> FS_ReadWriteSectorSetUp: 81 <1> pushraxrdi ; Save the regs 81 <2> 81 0000027A 50 <2> push rax 81 0000027B 51 <2> push rcx 81 0000027C 52 <2> push rdx 81 0000027D 53 <2> push rbx 81 0000027E 54 <2> push rsp 81 0000027F 55 <2> push rbp 81 00000280 56 <2> push rsi 81 00000281 57 <2> push rdi 81 <2> 82 00000282 893C25[6E020000] <1> mov dword[HddScratchBuffer],edi ; Save the buffer address 83 00000289 891425[72020000] <1> mov dword[FS_RW_Sector],edx ; Save the sector size (In the current implementation, Sector size will always be 512). 84 00000290 890C25[76020000] <1> mov dword[FS_RW_Count],ecx ; Count (In the current implementation, count will always be 1). 85 00000297 C60425[6D020000]01 <1> mov byte[FS_RW_SectorErrorNum],1 ; Set the error flag for Not implemented yet (1) 86 0000029F 83F800 <1> cmp eax,0 ; cmp if floppy 87 000002A2 7438 <1> je FS_ReadWriteSectorSetUpError ; If so error as not done yet 88 000002A4 FE0425[6D020000] <1> inc byte [FS_RW_SectorErrorNum] ; Put the error code to 2 89 000002AB 83F808 <1> cmp eax,8 ; Check if it more then 8 90 000002AE 772C <1> ja FS_ReadWriteSectorSetUpError ; if so exit with error 91 000002B0 50 <1> push rax ; Save whats in eax 92 000002B1 C1E002 <1> shl eax,2 ; times it by 4 93 000002B4 678B98[34020000] <1> mov ebx,dword[BaseTable+eax] ; Use the look up table to find the base 94 000002BB 891C25[68020000] <1> mov dword[HddBaseFS],ebx ; Store it 95 000002C2 58 <1> pop rax ; get the saved eax 96 000002C3 2401 <1> and al,00000001b ; See if its odd or even number 97 000002C5 3401 <1> xor al,00000001b ; Flip bit 1 round 98 000002C7 C0E004 <1> shl al,4 ; Multiply by 16 99 000002CA 880425[6C020000] <1> mov byte[MasterSlave],al ; Store it as master or slave 100 <1> popraxrdi ; restore the regs 100 <2> 100 000002D1 5F <2> pop rdi 100 000002D2 5E <2> pop rsi 100 000002D3 5D <2> pop rbp 100 000002D4 5C <2> pop rsp 100 000002D5 5B <2> pop rbx 100 000002D6 5A <2> pop rdx 100 000002D7 59 <2> pop rcx 100 000002D8 58 <2> pop rax 100 <2> 101 000002D9 30E4 <1> xor ah,ah ; post success 102 000002DB C3 <1> ret ; Return 103 <1> 104 <1> FS_ReadWriteSectorSetUpError: 105 <1> popraxrdi ; restore the regs 105 <2> 105 000002DC 5F <2> pop rdi 105 000002DD 5E <2> pop rsi 105 000002DE 5D <2> pop rbp 105 000002DF 5C <2> pop rsp 105 000002E0 5B <2> pop rbx 105 000002E1 5A <2> pop rdx 105 000002E2 59 <2> pop rcx 105 000002E3 58 <2> pop rax 105 <2> 106 000002E4 8A2425[6D020000] <1> mov ah,byte[FS_RW_SectorErrorNum] ; post error number 107 000002EB C3 <1> ret ; Return 108 <1> 109 <1> 110 <1> ;=======================================================; 111 <1> ; FS_ReadSector ; 112 <1> ;-------------------------------------------------------; 113 <1> ; Input: ; 114 <1> ; EAX = Unit (drive) ; 115 <1> ; 0 = Floppy ; 116 <1> ; 1 = primary device (0x1f0), master(0x00) ; 117 <1> ; 2 = primary device (0x1f0), slave(0x10) ; 118 <1> ; 3 = secondary device (0x170), master(0x00) ; 119 <1> ; 4 = secondary device (0x170), slave(0x10) ; 120 <1> ; ; 121 <1> ; (upto 8 devices) ; 122 <1> ; ; 123 <1> ; EDI = Buffer to write the data ; 124 <1> ; EDX = Sector number to read from ; 125 <1> ; ECX = Count Nunmber of sectors (just 1) ; 126 <1> ; ; 127 <1> ; Output: ; 128 <1> ; AH = 0 for success ; 129 <1> ; AH = Nonzero for failure ; 130 <1> ; 1 = Not implemented yet ; 131 <1> ; 2 = Unit to high ; 132 <1> ; 3 = TimeOut ; 133 <1> ; (100%) ; 134 <1> ;.......................................................; 135 <1> 136 <1> FS_ReadSector: 137 <1> pushraxrdi ; Save the regs 137 <2> 137 000002EC 50 <2> push rax 137 000002ED 51 <2> push rcx 137 000002EE 52 <2> push rdx 137 000002EF 53 <2> push rbx 137 000002F0 54 <2> push rsp 137 000002F1 55 <2> push rbp 137 000002F2 56 <2> push rsi 137 000002F3 57 <2> push rdi 137 <2> 138 000002F4 893C25[6E020000] <1> mov dword[HddScratchBuffer],edi ; Save the buffer address 139 000002FB 891425[72020000] <1> mov dword[FS_RW_Sector],edx ; Save the sector size (In the current implementation, Sector size will always be 512). 140 00000302 890C25[76020000] <1> mov dword[FS_RW_Count],ecx ; Count (In the current implementation, count will always be 1). 141 00000309 C60425[6D020000]01 <1> mov byte[FS_RW_SectorErrorNum],1 ; Set the error flag for Not implemented yet (1) 142 00000311 83F800 <1> cmp eax,0 ; cmp if floppy 143 00000314 7444 <1> je FS_ReadSectorError ; If so error as not done yet 144 00000316 FE0425[6D020000] <1> inc byte [FS_RW_SectorErrorNum] ; Put the error code to 2 145 0000031D 83F808 <1> cmp eax,8 ; Check if it more then 8 146 00000320 7738 <1> ja FS_ReadSectorError ; if so exit with error 147 00000322 50 <1> push rax ; Save whats in eax 148 00000323 C1E002 <1> shl eax,2 ; times it by 4 149 00000326 678B98[34020000] <1> mov ebx,dword[BaseTable+eax] ; Use the look up table to find the base 150 0000032D 891C25[68020000] <1> mov dword[HddBaseFS],ebx ; Store it 151 00000334 58 <1> pop rax ; get the saved eax 152 00000335 2401 <1> and al,00000001b ; See if its odd or even number 153 00000337 3401 <1> xor al,00000001b ; Flip bit 1 round 154 00000339 C0E004 <1> shl al,4 ; Multiply by 16 155 0000033C 880425[6C020000] <1> mov byte[MasterSlave],al ; Store it as master or slave 156 00000343 8B0425[72020000] <1> mov eax,dword[FS_RW_Sector] ; move sector number in to eax 157 0000034A E899000000 <1> call FS_Read_Sector ; call the hdd read function 158 <1> popraxrdi ; restore the regs 158 <2> 158 0000034F 5F <2> pop rdi 158 00000350 5E <2> pop rsi 158 00000351 5D <2> pop rbp 158 00000352 5C <2> pop rsp 158 00000353 5B <2> pop rbx 158 00000354 5A <2> pop rdx 158 00000355 59 <2> pop rcx 158 00000356 58 <2> pop rax 158 <2> 159 00000357 30E4 <1> xor ah,ah ; post success 160 00000359 C3 <1> ret ; Return 161 <1> 162 <1> FS_ReadSectorError: 163 <1> popraxrdi ; restore the regs 163 <2> 163 0000035A 5F <2> pop rdi 163 0000035B 5E <2> pop rsi 163 0000035C 5D <2> pop rbp 163 0000035D 5C <2> pop rsp 163 0000035E 5B <2> pop rbx 163 0000035F 5A <2> pop rdx 163 00000360 59 <2> pop rcx 163 00000361 58 <2> pop rax 163 <2> 164 00000362 8A2425[6D020000] <1> mov ah,byte[FS_RW_SectorErrorNum] ; post error number 165 00000369 C3 <1> ret ; Return 166 <1> 167 <1> ;=======================================================; 168 <1> ; FS_WriteSector ; 169 <1> ;-------------------------------------------------------; 170 <1> ; Input: ; 171 <1> ; EAX = Unit (drive) ; 172 <1> ; 0 = Floppy ; 173 <1> ; 1 = primary device (0x1f0), master(0x00) ; 174 <1> ; 2 = primary device (0x1f0), slave(0x10) ; 175 <1> ; 3 = secondary device (0x170), master(0x00) ; 176 <1> ; 4 = secondary device (0x170), slave(0x10) ; 177 <1> ; ; 178 <1> ; (upto 8 devices) ; 179 <1> ; ; 180 <1> ; EDI = Buffer to write the data ; 181 <1> ; EDX = Sector number to read from ; 182 <1> ; ECX = Count Nunmber of sectors (just 1) ; 183 <1> ; ; 184 <1> ; Output: ; 185 <1> ; AH = 0 for success ; 186 <1> ; AH = Nonzero for failure ; 187 <1> ; 1 = Not implemented yet ; 188 <1> ; 2 = Unit to high ; 189 <1> ; 3 = TimeOut ; 190 <1> ; (100%) ; 191 <1> ;.......................................................; 192 <1> 193 <1> FS_WriteSector: 194 <1> pushraxrdi ; Save the regs 194 <2> 194 0000036A 50 <2> push rax 194 0000036B 51 <2> push rcx 194 0000036C 52 <2> push rdx 194 0000036D 53 <2> push rbx 194 0000036E 54 <2> push rsp 194 0000036F 55 <2> push rbp 194 00000370 56 <2> push rsi 194 00000371 57 <2> push rdi 194 <2> 195 00000372 893C25[6E020000] <1> mov dword[HddScratchBuffer],edi ; Save the buffer address 196 00000379 891425[72020000] <1> mov dword[FS_RW_Sector],edx ; Save the sector size (In the current implementation, Sector size will always be 512). 197 00000380 890C25[76020000] <1> mov dword[FS_RW_Count],ecx ; Count (In the current implementation, count will always be 1). 198 00000387 C60425[6D020000]01 <1> mov byte[FS_RW_SectorErrorNum],1 ; Set the error flag for Not implemented yet (1) 199 0000038F 83F800 <1> cmp eax,0 ; cmp if floppy 200 00000392 7444 <1> je FS_WriteSectorError ; If so error as not done yet 201 00000394 FE0425[6D020000] <1> inc byte [FS_RW_SectorErrorNum] ; Put the error code to 2 202 0000039B 83F808 <1> cmp eax,8 ; Check if it more then 8 203 0000039E 7738 <1> ja FS_WriteSectorError ; if so exit with error 204 000003A0 50 <1> push rax ; Save whats in eax 205 000003A1 C1E002 <1> shl eax,2 ; times it by 4 206 000003A4 678B98[34020000] <1> mov ebx,dword[BaseTable+eax] ; Use the look up table to find the base 207 000003AB 891C25[68020000] <1> mov dword[HddBaseFS],ebx ; Store it 208 000003B2 58 <1> pop rax ; get the saved eax 209 000003B3 2401 <1> and al,00000001b ; See if its odd or even number 210 000003B5 3401 <1> xor al,00000001b ; Flip bit 1 round 211 000003B7 C0E004 <1> shl al,4 ; Multiply by 16 212 000003BA 880425[6C020000] <1> mov byte[MasterSlave],al ; Store it as master or slave 213 000003C1 8B0425[72020000] <1> mov eax,dword[FS_RW_Sector] ; move sector number in to eax 214 000003C8 E821000000 <1> call FS_Write_Sector ; call the hdd read function 215 <1> popraxrdi ; restore the regs 215 <2> 215 000003CD 5F <2> pop rdi 215 000003CE 5E <2> pop rsi 215 000003CF 5D <2> pop rbp 215 000003D0 5C <2> pop rsp 215 000003D1 5B <2> pop rbx 215 000003D2 5A <2> pop rdx 215 000003D3 59 <2> pop rcx 215 000003D4 58 <2> pop rax 215 <2> 216 000003D5 30E4 <1> xor ah,ah ; post success 217 000003D7 C3 <1> ret ; Return 218 <1> 219 <1> FS_WriteSectorError: 220 <1> popraxrdi ; restore the regs 220 <2> 220 000003D8 5F <2> pop rdi 220 000003D9 5E <2> pop rsi 220 000003DA 5D <2> pop rbp 220 000003DB 5C <2> pop rsp 220 000003DC 5B <2> pop rbx 220 000003DD 5A <2> pop rdx 220 000003DE 59 <2> pop rcx 220 000003DF 58 <2> pop rax 220 <2> 221 000003E0 8A2425[6D020000] <1> mov ah,byte[FS_RW_SectorErrorNum] ; post error number 222 000003E7 C3 <1> ret ; Return 223 <1> 224 <1> 225 <1> ;=======================================================; 226 <1> ; FS_ReadSector. ; 227 <1> ;-------------------------------------------------------; 228 <1> ; Input: ; 229 <1> ; EAX = Block to read ; 230 <1> ; ; 231 <1> ; NOTE: You should call FS_ReadWriteSectorSetUp ; 232 <1> ; on before the first time you call this function ; 233 <1> ; (100%) ; 234 <1> ;.......................................................; 235 <1> 236 <1> FS_Read_Sector: 237 000003E8 E807000000 <1> call HddReadFS ; Call the function 238 000003ED C3 <1> ret ; Return 239 <1> 240 <1> 241 <1> ;=======================================================; 242 <1> ; FS_WriteSector. ; 243 <1> ;-------------------------------------------------------; 244 <1> ; Input: ; 245 <1> ; EAX = Block to write ; 246 <1> ; ; 247 <1> ; NOTE: You should call FS_ReadWriteSectorSetUp ; 248 <1> ; on before the first time you call this function ; 249 <1> ; (100%) ; 250 <1> ;.......................................................; 251 <1> 252 <1> FS_Write_Sector: 253 000003EE E86C000000 <1> call HddWriteFS ; Call the function 254 000003F3 C3 <1> ret ; Return 255 <1> 256 <1> ;=======================================================; 257 <1> ; hd_read. ; 258 <1> ; ; eax = block to read ; 259 <1> ; ; [HddScratchBuffer] = buffer to write too ; 260 <1> ;=======================================================; 261 <1> HddReadFS: 262 <1> pushraxrdi 262 <2> 262 000003F4 50 <2> push rax 262 000003F5 51 <2> push rcx 262 000003F6 52 <2> push rdx 262 000003F7 53 <2> push rbx 262 000003F8 54 <2> push rsp 262 000003F9 55 <2> push rbp 262 000003FA 56 <2> push rsi 262 000003FB 57 <2> push rdi 262 <2> 263 000003FC 50 <1> push rax 264 <1> newhdreadFS: 265 000003FD 8B1425[68020000] <1> mov edx,[HddBaseFS] 266 00000404 FFC2 <1> inc edx 267 00000406 B000 <1> mov al,0 268 00000408 EE <1> out dx,al 269 <1> 270 00000409 FFC2 <1> inc edx 271 0000040B B001 <1> mov al,1 272 0000040D EE <1> out dx,al 273 <1> 274 0000040E FFC2 <1> inc edx 275 <1> ;pop ax 276 <1> ;pop ax 277 00000410 6658 <1> pop ax 278 00000412 EE <1> out dx,al 279 <1> 280 00000413 FFC2 <1> inc edx 281 00000415 66C1E808 <1> shr ax,8 282 00000419 EE <1> out dx,al 283 <1> 284 0000041A FFC2 <1> inc edx 285 0000041C 6658 <1> pop ax 286 0000041E EE <1> out dx,al 287 <1> 288 0000041F FFC2 <1> inc edx 289 00000421 66C1E808 <1> shr ax,8 290 00000425 240F <1> and al,1+2+4+8 291 00000427 020425[6C020000] <1> add al,[MasterSlave] 292 0000042E 04E0 <1> add al,128+64+32 293 00000430 EE <1> out dx,al 294 <1> 295 00000431 FFC2 <1> inc edx 296 00000433 B020 <1> mov al,20h 297 00000435 EE <1> out dx,al 298 <1> hddwaitFS: 299 00000436 EC <1> in al,dx 300 00000437 A880 <1> test al,128 301 00000439 75FB <1> jnz hddwaitFS 302 <1> 303 0000043B 8B3C25[6E020000] <1> mov edi,dword[HddScratchBuffer] 304 00000442 B900010000 <1> mov ecx,256 305 00000447 8B1425[68020000] <1> mov edx,[HddBaseFS] 306 0000044E FC <1> cld 307 0000044F F3666D <1> rep insw 308 <1> 309 00000452 6658 <1> pop ax 310 00000454 6658 <1> pop ax 311 <1> popraxrdi 311 <2> 311 00000456 5F <2> pop rdi 311 00000457 5E <2> pop rsi 311 00000458 5D <2> pop rbp 311 00000459 5C <2> pop rsp 311 0000045A 5B <2> pop rbx 311 0000045B 5A <2> pop rdx 311 0000045C 59 <2> pop rcx 311 0000045D 58 <2> pop rax 311 <2> 312 0000045E C3 <1> ret 313 <1> 314 <1> 315 <1> 316 <1> ;=======================================================; 317 <1> ; hd_write. ; eax = block to write ; 318 <1> ; ; HddScratchBuffer = buffer to read from ; 319 <1> ;=======================================================; 320 <1> HddWriteFS: 321 <1> pushraxrdi 321 <2> 321 0000045F 50 <2> push rax 321 00000460 51 <2> push rcx 321 00000461 52 <2> push rdx 321 00000462 53 <2> push rbx 321 00000463 54 <2> push rsp 321 00000464 55 <2> push rbp 321 00000465 56 <2> push rsi 321 00000466 57 <2> push rdi 321 <2> 322 00000467 50 <1> push rax 323 <1> newhdwrite: 324 00000468 8B1425[68020000] <1> mov edx,[HddBaseFS] 325 0000046F FFC2 <1> inc edx 326 00000471 B000 <1> mov al,0 327 00000473 EE <1> out dx,al 328 <1> 329 00000474 FFC2 <1> inc edx 330 00000476 B001 <1> mov al,1 331 00000478 EE <1> out dx,al 332 <1> 333 00000479 FFC2 <1> inc edx 334 0000047B 6658 <1> pop ax 335 0000047D 6658 <1> pop ax 336 0000047F 6658 <1> pop ax 337 00000481 EE <1> out dx,al 338 <1> 339 00000482 FFC2 <1> inc edx 340 00000484 66C1E808 <1> shr ax,8 341 00000488 EE <1> out dx,al 342 <1> 343 00000489 FFC2 <1> inc edx 344 0000048B 6658 <1> pop ax 345 0000048D EE <1> out dx,al 346 <1> 347 0000048E FFC2 <1> inc edx 348 00000490 66C1E808 <1> shr ax,8 349 00000494 240F <1> and al,1+2+4+8 350 00000496 020425[6C020000] <1> add al,[MasterSlave] 351 0000049D 04E0 <1> add al,128+64+32 352 0000049F EE <1> out dx,al 353 <1> 354 000004A0 FFC2 <1> inc edx 355 000004A2 B030 <1> mov al,30h ; write with retry (without = 0x31) 356 000004A4 EE <1> out dx,al 357 <1> hddwaitWrite: 358 000004A5 EC <1> in al,dx 359 000004A6 A880 <1> test al,128 360 000004A8 75FB <1> jnz hddwaitWrite 361 <1> 362 000004AA 8B3425[6E020000] <1> mov esi,dword[HddScratchBuffer] 363 000004B1 B900010000 <1> mov ecx,256 364 000004B6 8B1425[68020000] <1> mov edx,[HddBaseFS] 365 000004BD FC <1> cld 366 000004BE F3666F <1> rep outsw 367 <1> popraxrdi 367 <2> 367 000004C1 5F <2> pop rdi 367 000004C2 5E <2> pop rsi 367 000004C3 5D <2> pop rbp 367 000004C4 5C <2> pop rsp 367 000004C5 5B <2> pop rbx 367 000004C6 5A <2> pop rdx 367 000004C7 59 <2> pop rcx 367 000004C8 58 <2> pop rax 367 <2> 368 000004C9 C3 <1> ret 369 <1> 370 <1> 371 <1> 372 <1> 373 <1> 74 %include "C:\Users\Stephen\Documents\NASM\pushpopraxtordi.inc" ;include pusha popa 64 1 <1> ; 2 <1> ;push rax - rdi macro 3 <1> ; 4 <1> %macro pushraxrdi 0 4 ****************** <1> warning: redefining multi-line macro `pushraxrdi' 5 <1> 6 <1> push rax 7 <1> push rcx 8 <1> push rdx 9 <1> push rbx 10 <1> push rsp 11 <1> push rbp 12 <1> push rsi 13 <1> push rdi 14 <1> 15 <1> %endmacro 16 <1> 17 <1> ; 18 <1> ;pop rax - rdi macro 19 <1> ; 20 <1> %macro popraxrdi 0 20 ****************** <1> warning: redefining multi-line macro `popraxrdi' 21 <1> 22 <1> pop rdi 23 <1> pop rsi 24 <1> pop rbp 25 <1> pop rsp 26 <1> pop rbp 27 <1> pop rdx 28 <1> pop rcx 29 <1> pop rax 30 <1> 31 <1> %endmacro 75 76 77 78 ;Kernal code start 79 000004CA 90 align 8 80 81 Kern_Start: 82 000004D0 41B800000000 mov r8,0 ;x=0 83 000004D6 66448B0C25- mov r9w,word [STK] ;y=0 83 000004DB [1F000000] 84 000004DF 49BB- mov r11,STK+2 ;string to print 84 000004E1 [2100000000000000] 85 000004E9 41BAF4000000 mov r10,0xf4 ;Red on white 86 000004EF E8D2FCFFFF call printc 87 000004F4 B800000000 mov rax,0 88 000004F9 B900020000 mov rcx,512 89 000004FE BF00000040 mov rdi,IDTRK 90 00000503 F348AB rep stosq ;clear IDT table 91 00000506 B800200040 mov rax,idt_info 92 0000050B 482D00000040 sub rax,IDTRK 93 00000511 48FFC8 dec rax ;Size of table-1 94 00000514 6689042500200040 mov [IDTS],ax ;16 bit size of table 95 0000051C 48C704250220004000- mov qword [IDTST],IDTRK ;start of interrupt table 95 00000525 000040 96 00000528 0F011C2500200040 lidt [idt_info] ;load interrupt table info into IDTR register 97 ; 98 ;Re-map PIC offsets 99 ; 100 00000530 E421 in al,PIC1_DATA ;Save mask for master 101 00000532 4188C0 mov r8b,al 102 00000535 E4A1 in al,PIC2_DATA ;Save mask for slave 103 00000537 4188C1 mov r9b,al 104 0000053A B011 mov al,ICW1_INIT+ICW1_ICW4 105 0000053C E620 out PIC1_COMMAND,al ;starts the initialization sequence (in cascade mode) 106 0000053E E6A0 out PIC2_COMMAND,al ; 107 00000540 B020 mov al,0x20 108 00000542 E621 out PIC1_DATA,al ;ICW2: Master PIC vector offset 109 00000544 B028 mov al,0x28 110 00000546 E6A1 out PIC2_DATA,al ;ICW2: Slave PIC vector offset 111 00000548 B004 mov al,4 112 0000054A E621 out PIC1_DATA,al ;ICW3: tell Master PIC that there is a slave PIC at IRQ2 (0000 0100) 113 0000054C B002 mov al,2 114 0000054E E6A1 out PIC2_DATA,al ;ICW3: tell Slave PIC its cascade identity (0000 0010) 115 00000550 B001 mov al,ICW4_8086 116 00000552 E621 out PIC1_DATA,al 117 00000554 E6A1 out PIC2_DATA,al 118 00000556 4488C0 mov al,r8b ;Restore saved masks 119 00000559 E621 out PIC1_DATA ,al ; 120 0000055B 4488C8 mov al,r9b ; 121 0000055E E6A1 out PIC2_DATA,al ; 122 ; 123 ;initialise interrupt table to the default for now 124 ; 125 00000560 BF00000040 mov rdi,IDTRK ;start of interrupt table 126 00000565 48B8- mov rax,Default_Int ;start of the default interrupt 126 00000567 [0406000000000000] 127 0000056F B900010000 mov rcx,256 ;256 entries 128 00000574 668907 mov word [rdi],ax ;First offset for interrupt 129 00000577 66C747020800 mov word [rdi+2],8 ;Selector = 8 130 0000057D C6470400 mov byte [rdi+4],0 ; 131 00000581 C647058E mov byte [rdi+5],0x8e ;Interrupt gate and present plus ring 0 only 132 00000585 48C1C810 ror rax,16 ;get middle bits 133 00000589 66894706 mov [rdi+6],ax 134 0000058D 48C1C810 ror rax,16 ;get high bits 135 00000591 894708 mov [rdi+8],eax 136 00000594 C7470C00000000 mov dword [rdi+12],0 ;first entry done 137 0000059B 4883C710 add rdi,16 ;next entry 138 0000059F B9FF000000 mov rcx,255 ;count of qword entries 139 000005A4 FC cld 140 L1: 141 000005A5 BE00000040 mov rsi,IDTRK ;source 142 000005AA 48A5 movsq ;store qword from rsi to rdi 143 000005AC 48A5 movsq ;16 bytes copied for one entry 144 000005AE E2F5 loop L1 ;until done 145 000005B0 BF00000040 mov rdi,IDTRK 146 000005B5 4881C780000000 add rdi,8*16 ;8th entry 147 000005BC 48B8- mov rax,ISR_Sys_Er 147 000005BE [6F06000000000000] 148 000005C6 668907 mov [rdi],ax 149 000005C9 48C1C810 ror rax,16 150 000005CD 66894706 mov [rdi+6],ax 151 000005D1 48C1C810 ror rax,16 152 000005D5 894708 mov [rdi+8],eax 153 000005D8 BF00000040 mov rdi,IDTRK 154 000005DD 4881C7D0000000 add rdi,13*16 ;13th entry 155 000005E4 48B8- mov rax,Gen_Pro_Er 155 000005E6 [8006000000000000] 156 000005EE 668907 mov [rdi],ax 157 000005F1 48C1C810 ror rax,16 158 000005F5 66894706 mov [rdi+6],ax 159 000005F9 48C1C810 ror rax,16 160 000005FD 894708 mov [rdi+8],eax 161 162 ;sti 163 00000600 CD28 int 40 164 165 00000602 EBFE jmp $ 166 167 168 Default_Int: ;Default interrupt 169 00000604 EBFE jmp $ 170 pushraxrdi ;pusha macro 170 <1> 170 00000606 50 <1> push rax 170 00000607 51 <1> push rcx 170 00000608 52 <1> push rdx 170 00000609 53 <1> push rbx 170 0000060A 54 <1> push rsp 170 0000060B 55 <1> push rbp 170 0000060C 56 <1> push rsi 170 0000060D 57 <1> push rdi 170 <1> 171 0000060E 41B800000000 mov r8,0 172 00000614 41B903000000 mov r9,3 173 0000061A 49BB- mov r11,PINT ;print 'Interrupt!' 173 0000061C [2400000000000000] 174 00000624 41BAF0000000 mov r10,0xf0 175 0000062A E897FBFFFF call printc 176 popraxrdi ;popa macro 176 <1> 176 0000062F 5F <1> pop rdi 176 00000630 5E <1> pop rsi 176 00000631 5D <1> pop rbp 176 00000632 5C <1> pop rsp 176 00000633 5D <1> pop rbp 176 00000634 5A <1> pop rdx 176 00000635 59 <1> pop rcx 176 00000636 58 <1> pop rax 176 <1> 177 ;jmp $ 178 00000637 48CF iretq 179 180 Pr_Except: ;Print exception Sub_Routine 181 00000639 66448B08 mov r9w,[rax] ;y 182 0000063D 4D31C0 xor r8,r8 ;x = 0 183 00000640 4989C3 mov r11,rax 184 00000643 4983C302 add r11,2 ;string 185 00000647 41BAF0000000 mov r10,0xf0 ;colour 186 0000064D E874FBFFFF call printc ;Print exception warning 187 00000652 41B90C000000 mov r9,12 188 00000658 41B80A000000 mov r8,10 189 0000065E 49BB- mov r11,Turn_O 189 00000660 [6D01000000000000] 190 00000668 E859FBFFFF call printc 191 0000066D FA cli 192 0000066E F4 hlt ;turn off or reboot 193 194 ISR_Sys_Er: ;Double Exception Int 8 195 0000066F 48B8- mov rax,Sys_Err 195 00000671 [B200000000000000] 196 00000679 E8BBFFFFFF call Pr_Except 197 0000067E FA cli 198 0000067F F4 hlt 199 200 Gen_Pro_Er: ;General protection fault 201 00000680 48B8- mov rax,Gen_Pro 201 00000682 [2B01000000000000] 202 0000068A E8AAFFFFFF call Pr_Except 203 0000068F FA cli 204 00000690 F4 hlt 205 206 00000691 5555555555555555 dq 0x5555555555555555 ;end of code marker 207 208 absolute 0x40000000 ;1GB start of data 209 210 IDTRK: ;IDT descriptor table 211 40000000 resw 0x1000 ;256*16 byte table 212 idt_info: 213 40002000 IDTS: resw 1 214 40002002 IDTST: resq 1