#include <asm/types.h>#include <asm/tss.h>#include <asm/desc.h>Include dependency graph for gates.c:
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Defines | |
| #define | CODE_RE_DESC_TYPE 0x1A |
| #define | DATA_RW_DESC_TYPE 0x12 |
| #define | INTERRUPT_GATE_TYPE 0x0E |
| #define | TRAP_GATE_TYPE 0x0F |
| #define | TASK_GATE_TYPE 0x05 |
| #define | TSS_DESC_TYPE 0x09 |
| #define | GATE_PRESENT_FLAG 1 << 7 |
| #define | GRANULARITY_FLAG 1 << 7 |
| #define | DB_FLAG 1 << 6 |
| #define | set_type_byte(type) |
Functions | |
| void | set_IDT_gate_descriptor (struct desc_struct *desc_table, u16 selector, void *offset, u8 type_byte) |
| void | set_TSS_descriptor (struct desc_struct *desc_table, void *offset, u32 limit, u8 type_byte) |
| void | set_GDT_descriptor (struct desc_struct *desc_table, u32 base, u32 limit, u8 type_byte, u8 db) |
| void | set_code_desc (u32 entry, u32 base, u32 limit, u8 dpl, u8 db) |
| void | set_data_desc (u32 entry, u32 base, u32 limit, u8 dpl, u8 db) |
| void | set_interrupt_gate (u32 entry, u16 selector, void *offset, u8 dpl) |
| void | set_trap_gate (u32 entry, u16 selector, void *offset, u8 dpl) |
| void | set_task_gate (u32 entry, u16 selector, u8 dpl) |
| void | set_TSS_desc (u32 entry, void *offset, u32 limit, u8 dpl) |
Variables | |
| desc_struct | idt_table [256] |
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Definition at line 18 of file gates.c. Referenced by set_code_desc(). |
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Definition at line 19 of file gates.c. Referenced by set_data_desc(). |
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Definition at line 20 of file gates.c. Referenced by set_interrupt_gate(). |
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Value: u8 type_byte = 0; \
type_byte |= GATE_PRESENT_FLAG; \
type_byte |= type; \
type_byte |= dpl << 5;
Definition at line 28 of file gates.c. Referenced by set_code_desc(), set_data_desc(), set_interrupt_gate(), set_task_gate(), set_trap_gate(), and set_TSS_desc(). |
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Definition at line 22 of file gates.c. Referenced by set_task_gate(). |
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Definition at line 21 of file gates.c. Referenced by set_trap_gate(). |
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Definition at line 23 of file gates.c. Referenced by set_TSS_desc(). |
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Definition at line 68 of file gates.c. References CODE_RE_DESC_TYPE, set_GDT_descriptor(), and set_type_byte. Referenced by apm_init(). 00069 {
00070 set_type_byte(CODE_RE_DESC_TYPE);
00071 set_GDT_descriptor(gdt_table + entry, base, limit, type_byte, db);
00072 }
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Definition at line 74 of file gates.c. References DATA_RW_DESC_TYPE, set_GDT_descriptor(), and set_type_byte. Referenced by apm_init(). 00075 {
00076 set_type_byte(DATA_RW_DESC_TYPE);
00077 set_GDT_descriptor(gdt_table + entry, base, limit, type_byte, db);
00078 }
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Definition at line 58 of file gates.c. Referenced by set_code_desc(), and set_data_desc(). 00059 {
00060 u16 *table = (u16 *)desc_table;
00061
00062 table[0] = (u16)(limit & 0xFFFF);
00063 table[1] = (u16)(base & 0xFFFF);
00064 table[2] = (u16)((type_byte << 8) | ((base >> 16) & 0xFF));
00065 table[3] = (u16)(((base >> 16) & 0xFF00) | ((limit >> 16) & 0x0F) | ((db & 0x01) << 6));
00066 }
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Definition at line 36 of file gates.c. Referenced by set_interrupt_gate(), set_task_gate(), and set_trap_gate(). 00037 {
00038 u16 *table = (u16 *)desc_table;
00039 u32 offset_32 = (u32)offset;
00040
00041 table[0] = (u16)(offset_32 & 0xFFFF);
00042 table[1] = selector;
00043 table[2] = (type_byte << 8);
00044 table[3] = (u16)((offset_32 >> 16) & 0xFFFF);
00045 }
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Definition at line 80 of file gates.c. References idt_table, INTERRUPT_GATE_TYPE, set_IDT_gate_descriptor(), and set_type_byte. Referenced by faults_init(), and irqs_init(). 00081 {
00082 set_type_byte(INTERRUPT_GATE_TYPE);
00083 set_IDT_gate_descriptor(idt_table + entry, selector, offset, type_byte);
00084 }
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Definition at line 92 of file gates.c. References idt_table, set_IDT_gate_descriptor(), set_type_byte, and TASK_GATE_TYPE. 00093 {
00094 set_type_byte(TASK_GATE_TYPE);
00095 set_IDT_gate_descriptor(idt_table + entry, selector, 0, type_byte);
00096 }
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Definition at line 86 of file gates.c. References idt_table, set_IDT_gate_descriptor(), set_type_byte, and TRAP_GATE_TYPE. Referenced by faults_init(). 00087 {
00088 set_type_byte(TRAP_GATE_TYPE);
00089 set_IDT_gate_descriptor(idt_table + entry, selector, offset, type_byte);
00090 }
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Definition at line 98 of file gates.c. References set_TSS_descriptor(), set_type_byte, and TSS_DESC_TYPE. Referenced by task_exit(), task_fork(), and task_kernel_create(). 00099 {
00100 set_type_byte(TSS_DESC_TYPE);
00101 set_TSS_descriptor(gdt_table + entry, offset, limit, type_byte);
00102 }
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Definition at line 47 of file gates.c. Referenced by set_TSS_desc(). 00048 {
00049 u16 *table = (u16 *)desc_table;
00050 u32 base_32 = (u32)offset;
00051
00052 table[0] = (u16)(limit & 0xFFFF);
00053 table[1] = (u16)(base_32 & 0xFFFF);
00054 table[2] = (u16)((type_byte << 8) | ((base_32 >> 16) & 0xFF));
00055 table[3] = (u16)(((base_32 >> 16) & 0xFF00) | ((limit >> 16) & 0x0F));
00056 }
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Referenced by set_interrupt_gate(), set_task_gate(), and set_trap_gate(). |