6 #include "apic-defs.h"
8 /* Boot-related data structures */
14 	.limit = sizeof(boot_idt) - 1,
22 	{0xffff, 0, 0, .type_limit_flags = 0xcf9b}, /* flat 32-bit code segment */
23 	{0xffff, 0, 0, .type_limit_flags = 0xcf93}, /* flat 32-bit data segment */
24 	{0xffff, 0, 0, .type_limit_flags = 0xcf1b}, /* flat 32-bit code segment, not present */
26 	{0xffff, 0, 0, .type_limit_flags = 0x8f9b}, /* 16-bit code segment */
27 	{0xffff, 0, 0, .type_limit_flags = 0x8f93}, /* 16-bit data segment */
28 	{0xffff, 0, 0, .type_limit_flags = 0xcffb}, /* 32-bit code segment (user) */
29 	{0xffff, 0, 0, .type_limit_flags = 0xcff3}, /* 32-bit data segment (user) */
36 	{0xffff, 0, 0, .type_limit_flags = 0xaf9b}, /* 0x08 64-bit code segment */
37 	{0xffff, 0, 0, .type_limit_flags = 0xcf93}, /* 0x10 32/64-bit data segment */
38 	{0xffff, 0, 0, .type_limit_flags = 0xaf1b}, /* 0x18 64-bit code segment, not present */
39 	{0xffff, 0, 0, .type_limit_flags = 0xcf9b}, /* 0x20 32-bit code segment */
40 	{0xffff, 0, 0, .type_limit_flags = 0x8f9b}, /* 0x28 16-bit code segment */
41 	{0xffff, 0, 0, .type_limit_flags = 0x8f93}, /* 0x30 16-bit data segment */
42 	{0xffff, 0, 0, .type_limit_flags = 0xcffb}, /* 0x38 32-bit code segment (user) */
43 	{0xffff, 0, 0, .type_limit_flags = 0xcff3}, /* 0x40 32/64-bit data segment (user) */
44 	{0xffff, 0, 0, .type_limit_flags = 0xaffb}, /* 0x48 64-bit code segment (user) */
51 	.limit = sizeof(gdt) - 1,
72 	e->offset0 = (unsigned long)addr;  in set_desc_entry()
73 	e->selector = sel;  in set_desc_entry()
74 	e->ist = 0;  in set_desc_entry()
75 	e->type = type;  in set_desc_entry()
76 	e->dpl = dpl;  in set_desc_entry()
77 	e->p = 1;  in set_desc_entry()
78 	e->offset1 = (unsigned long)addr >> 16;  in set_desc_entry()
81 		e->offset2 = (unsigned long)addr >> 32;  in set_desc_entry()
94 	e->dpl = dpl;  in set_idt_dpl()
100 	e->selector = sel;  in set_idt_sel()
145 	       cpu ? "cpu " : "", regs->vector,  in unhandled_exception()
146 	       exception_mnemonic(regs->vector), regs->rip);  in unhandled_exception()
147 	if (regs->vector == 14)  in unhandled_exception()
148 		printf("PF at %#lx addr %#lx\n", regs->rip, read_cr2());  in unhandled_exception()
162 	       regs->error_code, regs->rflags, regs->cs,  in unhandled_exception()
163 	       regs->rax, regs->rcx, regs->rdx, regs->rbx,  in unhandled_exception()
164 	       regs->rbp, regs->rsi, regs->rdi,  in unhandled_exception()
166 	       regs->r8, regs->r9, regs->r10, regs->r11,  in unhandled_exception()
167 	       regs->r12, regs->r13, regs->r14, regs->r15,  in unhandled_exception()
174 	dump_frame_stack((void*) regs->rip, (void*) regs->rbp);  in unhandled_exception()
182 	this_cpu_write_exception_vector(regs->vector);  in check_exception_table()
183 	this_cpu_write_exception_rflags_rf((regs->rflags >> 16) & 1);  in check_exception_table()
184 	this_cpu_write_exception_error_code(regs->error_code);  in check_exception_table()
187 		if (ex->rip == regs->rip) {  in check_exception_table()
188 			regs->rip = ex->handler;  in check_exception_table()
195 static handler exception_handlers[32];
202 	if (v < 32)  in handle_exception()
212 	if (regs->vector < 32 && exception_handlers[regs->vector]) {  in do_handle_exception()
213 		exception_handlers[regs->vector](regs);  in do_handle_exception()
279 static void *idt_handlers[32] = {
310 	for (i = 0; i < 32; i++) {  in setup_idt()
346 	entry->base1 = (base & 0xFFFF);  in set_gdt_entry_base()
347 	entry->base2 = (base >> 16) & 0xFF;  in set_gdt_entry_base()
348 	entry->base3 = (base >> 24) & 0xFF;  in set_gdt_entry_base()
351 	if (!entry->s) {  in set_gdt_entry_base()
353 		entry16->zero = 0;  in set_gdt_entry_base()
354 		entry16->base4 = base >> 32;  in set_gdt_entry_base()
364 	entry->limit1 = (limit & 0xFFFF);  in set_gdt_entry()
365 	entry->type_limit_flags = ((limit & 0xF0000) >> 8) | ((flags & 0xF0) << 8) | type;  in set_gdt_entry()
373 	entry->type_limit_flags &= ~0xFF;  in clear_tss_busy()
374 	entry->type_limit_flags |= 0x89;  in clear_tss_busy()
395 	e->selector = sel;  in set_idt_task_gate()
396 	e->ist = 0;  in set_idt_task_gate()
397 	e->type = 5;  in set_idt_task_gate()
398 	e->dpl = 0;  in set_idt_task_gate()
399 	e->p = 1;  in set_idt_task_gate()
403  * 0 - main task
404  * 1 - interrupt task
422 	set_gdt_entry(TSS_INTR, (u32)&tss_intr, desc_size - 1, 0x89, 0);  in setup_tss32()
476 	regs->rip = (unsigned long)&exception_handler_longjmp;  in exception_handler()
477 	regs->cs = read_cs();  in exception_handler()
523 	base = entry->base1 | ((u32)entry->base2 << 16) | ((u32)entry->base3 << 24);  in get_gdt_entry_base()
525 	if (!entry->s) {  in get_gdt_entry_base()
526 		base |= (u64)((struct system_desc64 *)entry)->base4 << 32;  in get_gdt_entry_base()
535 	limit = entry->limit1 | ((u32)entry->limit2 << 16);  in get_gdt_entry_limit()
536 	if (entry->g) {  in get_gdt_entry_limit()