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comparison cos/kernel/handlers.c @ 33:d8185ddb6c7b

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Added more interrupt handlers
author windel
date Sun, 15 Jan 2012 13:39:49 +0100
parents 3a6a9b929db0
children 91f91ff07ea8
comparison
equal deleted inserted replaced
32:3a6a9b929db0 33:d8185ddb6c7b
19 void INT14(void); 19 void INT14(void);
20 void INT16(void); 20 void INT16(void);
21 void INT17(void); 21 void INT17(void);
22 void INT18(void); 22 void INT18(void);
23 void INT19(void); 23 void INT19(void);
24 // Remapped handlers: 24 // Remapped irq assembler wrappers:
25 void INT32(void); 25 void INT32(void);
26 void INT33(void); 26 void INT33(void);
27 void INT34(void); 27 void INT34(void);
28 void INT35(void);
29 void INT36(void);
30 void INT37(void);
31 void INT38(void);
32 void INT39(void);
33 void INT40(void);
34 void INT41(void);
35 void INT42(void);
36 void INT43(void);
37 void INT44(void);
38 void INT45(void);
39 void INT46(void);
40 void INT47(void);
28 41
29 // THE interrupt descriptor table: 42 // THE interrupt descriptor table:
30 IDT_entry *idt = (IDT_entry*)0x5000; 43 IDT_entry *idt = (IDT_entry*)0x5000;
31 volatile idtPointer idtP; 44 volatile idtPointer idtP;
32 45
84 /* reserved interrupts: */ 97 /* reserved interrupts: */
85 // From int20 - int31 98 // From int20 - int31
86 setIDTentry(32, INT32, 0x08, 0x8F); 99 setIDTentry(32, INT32, 0x08, 0x8F);
87 setIDTentry(33, INT33, 0x08, 0x8F); 100 setIDTentry(33, INT33, 0x08, 0x8F);
88 setIDTentry(34, INT34, 0x08, 0x8F); 101 setIDTentry(34, INT34, 0x08, 0x8F);
102 setIDTentry(35, INT35, 0x08, 0x8F);
103 setIDTentry(36, INT36, 0x08, 0x8F);
104 setIDTentry(37, INT37, 0x08, 0x8F);
105 setIDTentry(38, INT38, 0x08, 0x8F);
106 setIDTentry(39, INT39, 0x08, 0x8F);
107 setIDTentry(40, INT40, 0x08, 0x8F);
108 setIDTentry(41, INT41, 0x08, 0x8F);
109 setIDTentry(42, INT42, 0x08, 0x8F);
110 setIDTentry(43, INT43, 0x08, 0x8F);
111 setIDTentry(44, INT44, 0x08, 0x8F);
112 setIDTentry(45, INT45, 0x08, 0x8F);
113 setIDTentry(46, INT46, 0x08, 0x8F);
114 setIDTentry(47, INT47, 0x08, 0x8F);
89 115
90 // Set the correct values in the IDT pointer: 116 // Set the correct values in the IDT pointer:
91 idtP.base = (uint64_t)idt; 117 idtP.base = (uint64_t)idt;
92 idtP.limit = (sizeof(IDT_entry) * 256) - 1; 118 idtP.limit = (sizeof(IDT_entry) * 256) - 1;
93 // call load IDT asm function: 119 // call load IDT asm function:
121 147
122 outb(0x21, maskmaster); 148 outb(0x21, maskmaster);
123 outb(0xA1, maskslave); 149 outb(0xA1, maskslave);
124 } 150 }
125 151
152 void gp_fault(uint64_t *regs)
153 {
154 printf("GP fault\n");
155 printf("Error code: %x\n", regs[8]);
156 printf("RIP: %x\n", regs[9]);
157 panic("No resolution to general protection fault!");
158 }
159
160 void page_fault(uint64_t *regs)
161 {
162 printf("Page fault\n");
163 uint64_t faulting_address;
164 asm volatile("mov %%cr2, %0" : "=r" (faulting_address));
165 printf("Error code: %x\n", regs[8]);
166 printf("RIP: %x\n", regs[9]);
167 printf("Faulting address: %x\n", faulting_address);
168 panic("No resolution to page fault!");
169
170 }
126 // Global isr handler: 171 // Global isr handler:
127 172
128 // Hopefully, this function get called with the correct registers. 173 // Hopefully, this function get called with the correct registers.
129 void isr_handler(uint64_t* registers) 174 void isr_handler(uint64_t* registers)
130 { 175 {
137 } 182 }
138 else if (intnum == 33) 183 else if (intnum == 33)
139 { 184 {
140 keyboardDriverUpdate(); 185 keyboardDriverUpdate();
141 } 186 }
187 else if (intnum == 13)
188 {
189 gp_fault(registers);
190 }
191 else if (intnum == 14)
192 {
193 page_fault(registers);
194 }
195 else if (intnum == 39)
196 {
197 printf("Spurious interrupt\n");
198 }
142 else 199 else
143 { 200 {
144 // printf("Interrupt %d called, registers at: %x\n", registers[7], registers); 201 printf("Interrupt %d called, registers at: %x\n", registers[7], registers);
202 panic("Paniek! Unhandled interrupt!");
145 } 203 }
146 204
147 // TODO: EOI to slave? 205 // TODO: EOI to slave?
148 // TODO: replace this with APIC code? 206 // TODO: replace this with APIC code?
149 outb(0x20, 0x20); // EOI to master 207 outb(0x20, 0x20); // EOI to master