1 ; AcessOS Microkernel Version
11 GDT_SIZE equ (1+2*2+1+MAX_CPUS)*8
19 dd 0x00000000, 0x00000000 ; 00 NULL Entry
20 dd 0x0000FFFF, 0x00CF9A00 ; 08 PL0 Code
21 dd 0x0000FFFF, 0x00CF9200 ; 10 PL0 Data
22 dd 0x0000FFFF, 0x00CFFA00 ; 18 PL3 Code
23 dd 0x0000FFFF, 0x00CFF200 ; 20 PL3 Data
24 dd 26*4-1, 0x00408900 ; Double Fault TSS
25 times MAX_CPUS dd 26*4-1, 0x00408900
34 times 256 dd 0x00080000,0x00000F00
37 dw 256 * 16 - 1 ; Limit
42 [global Desctab_Install]
46 mov ax, 0x10 ; PL0 Data
58 mov WORD [gIDT + %1*8], ax
60 mov WORD [gIDT + %1*8+6], ax
61 mov ax, WORD [gIDT + %1*8 + 4]
63 mov WORD [gIDT + %1*8 + 4], ax
66 mov ax, WORD [gIDT + %1*8 + 4]
68 mov WORD [gIDT + %1*8 + 4], ax
92 out dx, al ; Init Command
95 out dx, al ; Offset (Start of IDT Range)
97 out dx, al ; IRQ connected to Slave (00000100b) = IRQ2
101 out dx, al ; Set Mode
105 out dx, al ; Init Command
108 out dx, al ; Offset (Start of IDT Range)
110 out dx, al ; IRQ Line connected to master
112 out dx, al ; Set Mode
114 out dx, al ; Set Mode
155 ISR_NOERR 0; 0: Divide By Zero Exception
156 ISR_NOERR 1; 1: Debug Exception
157 ISR_NOERR 2; 2: Non Maskable Interrupt Exception
158 ISR_NOERR 3; 3: Int 3 Exception
159 ISR_NOERR 4; 4: INTO Exception
160 ISR_NOERR 5; 5: Out of Bounds Exception
161 ISR_NOERR 6; 6: Invalid Opcode Exception
162 ISR_NOERR 7; 7: Coprocessor Not Available Exception
163 ISR_ERRNO 8; 8: Double Fault Exception (With Error Code!)
164 ISR_NOERR 9; 9: Coprocessor Segment Overrun Exception
165 ISR_ERRNO 10; 10: Bad TSS Exception (With Error Code!)
166 ISR_ERRNO 11; 11: Segment Not Present Exception (With Error Code!)
167 ISR_ERRNO 12; 12: Stack Fault Exception (With Error Code!)
168 ISR_ERRNO 13; 13: General Protection Fault Exception (With Error Code!)
169 ISR_ERRNO 14; 14: Page Fault Exception (With Error Code!)
170 ISR_NOERR 15; 15: Reserved Exception
171 ISR_NOERR 16; 16: Floating Point Exception
172 ISR_NOERR 17; 17: Alignment Check Exception
173 ISR_NOERR 18; 18: Machine Check Exception
174 ISR_NOERR 19; 19: Reserved
175 ISR_NOERR 20; 20: Reserved
176 ISR_NOERR 21; 21: Reserved
177 ISR_NOERR 22; 22: Reserved
178 ISR_NOERR 23; 23: Reserved
179 ISR_NOERR 24; 24: Reserved
180 ISR_NOERR 25; 25: Reserved
181 ISR_NOERR 26; 26: Reserved
182 ISR_NOERR 27; 27: Reserved
183 ISR_NOERR 28; 28: Reserved
184 ISR_NOERR 29; 29: Reserved
185 ISR_NOERR 30; 30: Reserved
186 ISR_NOERR 31; 31: Reserved
188 DEF_SYSCALL 0xAC ; Acess System Call
193 [extern SchedulerBase]
204 ; ---------------------
205 ; Common error handling
206 ; ---------------------
207 [extern ErrorHandler]
231 add esp, 8 ; Error Code and ID
234 ; --------------------------
235 ; Common System Call Handler
236 ; --------------------------
237 [extern SyscallHandler]
254 add esp, 8 ; Error Code and ID
283 add esp, 8 ; Error Code and ID