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Get rid of magic numbers in IDTEs

This commit is contained in:
Alex Kotov 2022-11-28 14:30:30 +04:00
parent 46bd41514c
commit 6c15d5355c
Signed by: kotovalexarian
GPG Key ID: 553C0EBBEB5D5F08
1 changed files with 57 additions and 49 deletions
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106
src/protected.c
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@ -168,62 +168,70 @@ void idt_set_gates()
{
memset(idt_entries, 0, sizeof(idt_entries));
const uint16_t flags_base = 0x8e;
const uint16_t flags_priv_user = 0x60;
// exception
idt_set_gate(0, (uint32_t)interrupt_0, 0x08, 0x8E);
idt_set_gate(1, (uint32_t)interrupt_1, 0x08, 0x8E);
idt_set_gate(2, (uint32_t)interrupt_2, 0x08, 0x8E);
idt_set_gate(3, (uint32_t)interrupt_3, 0x08, 0x8E);
idt_set_gate(4, (uint32_t)interrupt_4, 0x08, 0x8E);
idt_set_gate(5, (uint32_t)interrupt_5, 0x08, 0x8E);
idt_set_gate(6, (uint32_t)interrupt_6, 0x08, 0x8E);
idt_set_gate(7, (uint32_t)interrupt_7, 0x08, 0x8E);
idt_set_gate(8, (uint32_t)interrupt_8, 0x08, 0x8E);
idt_set_gate(9, (uint32_t)interrupt_9, 0x08, 0x8E);
idt_set_gate(10, (uint32_t)interrupt_10, 0x08, 0x8E);
idt_set_gate(11, (uint32_t)interrupt_11, 0x08, 0x8E);
idt_set_gate(12, (uint32_t)interrupt_12, 0x08, 0x8E);
idt_set_gate(13, (uint32_t)interrupt_13, 0x08, 0x8E);
idt_set_gate(14, (uint32_t)interrupt_14, 0x08, 0x8E);
idt_set_gate(15, (uint32_t)interrupt_15, 0x08, 0x8E);
idt_set_gate(16, (uint32_t)interrupt_16, 0x08, 0x8E);
idt_set_gate(17, (uint32_t)interrupt_17, 0x08, 0x8E);
idt_set_gate(18, (uint32_t)interrupt_18, 0x08, 0x8E);
idt_set_gate(19, (uint32_t)interrupt_19, 0x08, 0x8E);
idt_set_gate(20, (uint32_t)interrupt_20, 0x08, 0x8E);
idt_set_gate(21, (uint32_t)interrupt_21, 0x08, 0x8E);
idt_set_gate(22, (uint32_t)interrupt_22, 0x08, 0x8E);
idt_set_gate(23, (uint32_t)interrupt_23, 0x08, 0x8E);
idt_set_gate(24, (uint32_t)interrupt_24, 0x08, 0x8E);
idt_set_gate(25, (uint32_t)interrupt_25, 0x08, 0x8E);
idt_set_gate(26, (uint32_t)interrupt_26, 0x08, 0x8E);
idt_set_gate(27, (uint32_t)interrupt_27, 0x08, 0x8E);
idt_set_gate(28, (uint32_t)interrupt_28, 0x08, 0x8E);
idt_set_gate(29, (uint32_t)interrupt_29, 0x08, 0x8E);
idt_set_gate(30, (uint32_t)interrupt_30, 0x08, 0x8E);
idt_set_gate(31, (uint32_t)interrupt_31, 0x08, 0x8E);
idt_set_gate(0, (uint32_t)interrupt_0, 0x08, flags_base);
idt_set_gate(1, (uint32_t)interrupt_1, 0x08, flags_base);
idt_set_gate(2, (uint32_t)interrupt_2, 0x08, flags_base);
idt_set_gate(3, (uint32_t)interrupt_3, 0x08, flags_base);
idt_set_gate(4, (uint32_t)interrupt_4, 0x08, flags_base);
idt_set_gate(5, (uint32_t)interrupt_5, 0x08, flags_base);
idt_set_gate(6, (uint32_t)interrupt_6, 0x08, flags_base);
idt_set_gate(7, (uint32_t)interrupt_7, 0x08, flags_base);
idt_set_gate(8, (uint32_t)interrupt_8, 0x08, flags_base);
idt_set_gate(9, (uint32_t)interrupt_9, 0x08, flags_base);
idt_set_gate(10, (uint32_t)interrupt_10, 0x08, flags_base);
idt_set_gate(11, (uint32_t)interrupt_11, 0x08, flags_base);
idt_set_gate(12, (uint32_t)interrupt_12, 0x08, flags_base);
idt_set_gate(13, (uint32_t)interrupt_13, 0x08, flags_base);
idt_set_gate(14, (uint32_t)interrupt_14, 0x08, flags_base);
idt_set_gate(15, (uint32_t)interrupt_15, 0x08, flags_base);
idt_set_gate(16, (uint32_t)interrupt_16, 0x08, flags_base);
idt_set_gate(17, (uint32_t)interrupt_17, 0x08, flags_base);
idt_set_gate(18, (uint32_t)interrupt_18, 0x08, flags_base);
idt_set_gate(19, (uint32_t)interrupt_19, 0x08, flags_base);
idt_set_gate(20, (uint32_t)interrupt_20, 0x08, flags_base);
idt_set_gate(21, (uint32_t)interrupt_21, 0x08, flags_base);
idt_set_gate(22, (uint32_t)interrupt_22, 0x08, flags_base);
idt_set_gate(23, (uint32_t)interrupt_23, 0x08, flags_base);
idt_set_gate(24, (uint32_t)interrupt_24, 0x08, flags_base);
idt_set_gate(25, (uint32_t)interrupt_25, 0x08, flags_base);
idt_set_gate(26, (uint32_t)interrupt_26, 0x08, flags_base);
idt_set_gate(27, (uint32_t)interrupt_27, 0x08, flags_base);
idt_set_gate(28, (uint32_t)interrupt_28, 0x08, flags_base);
idt_set_gate(29, (uint32_t)interrupt_29, 0x08, flags_base);
idt_set_gate(30, (uint32_t)interrupt_30, 0x08, flags_base);
idt_set_gate(31, (uint32_t)interrupt_31, 0x08, flags_base);
// hwint: master PIC
idt_set_gate(32, (uint32_t)interrupt_32, 0x08, 0x8E);
idt_set_gate(33, (uint32_t)interrupt_33, 0x08, 0x8E);
idt_set_gate(34, (uint32_t)interrupt_34, 0x08, 0x8E);
idt_set_gate(35, (uint32_t)interrupt_35, 0x08, 0x8E);
idt_set_gate(36, (uint32_t)interrupt_36, 0x08, 0x8E);
idt_set_gate(37, (uint32_t)interrupt_37, 0x08, 0x8E);
idt_set_gate(38, (uint32_t)interrupt_38, 0x08, 0x8E);
idt_set_gate(39, (uint32_t)interrupt_39, 0x08, 0x8E);
idt_set_gate(32, (uint32_t)interrupt_32, 0x08, flags_base);
idt_set_gate(33, (uint32_t)interrupt_33, 0x08, flags_base);
idt_set_gate(34, (uint32_t)interrupt_34, 0x08, flags_base);
idt_set_gate(35, (uint32_t)interrupt_35, 0x08, flags_base);
idt_set_gate(36, (uint32_t)interrupt_36, 0x08, flags_base);
idt_set_gate(37, (uint32_t)interrupt_37, 0x08, flags_base);
idt_set_gate(38, (uint32_t)interrupt_38, 0x08, flags_base);
idt_set_gate(39, (uint32_t)interrupt_39, 0x08, flags_base);
// hwint: slave PIC
idt_set_gate(40, (uint32_t)interrupt_40, 0x08, 0x8E);
idt_set_gate(41, (uint32_t)interrupt_41, 0x08, 0x8E);
idt_set_gate(42, (uint32_t)interrupt_42, 0x08, 0x8E);
idt_set_gate(43, (uint32_t)interrupt_43, 0x08, 0x8E);
idt_set_gate(44, (uint32_t)interrupt_44, 0x08, 0x8E);
idt_set_gate(45, (uint32_t)interrupt_45, 0x08, 0x8E);
idt_set_gate(46, (uint32_t)interrupt_46, 0x08, 0x8E);
idt_set_gate(47, (uint32_t)interrupt_47, 0x08, 0x8E);
idt_set_gate(40, (uint32_t)interrupt_40, 0x08, flags_base);
idt_set_gate(41, (uint32_t)interrupt_41, 0x08, flags_base);
idt_set_gate(42, (uint32_t)interrupt_42, 0x08, flags_base);
idt_set_gate(43, (uint32_t)interrupt_43, 0x08, flags_base);
idt_set_gate(44, (uint32_t)interrupt_44, 0x08, flags_base);
idt_set_gate(45, (uint32_t)interrupt_45, 0x08, flags_base);
idt_set_gate(46, (uint32_t)interrupt_46, 0x08, flags_base);
idt_set_gate(47, (uint32_t)interrupt_47, 0x08, flags_base);
// syscall
idt_set_gate(INT_SYSCALL, (uint32_t)interrupt_0x80, 0x08, 0x8E | 0x60);
idt_set_gate(
INT_SYSCALL,
(uint32_t)interrupt_0x80,
0x08,
flags_base | flags_priv_user
);
}
void idt_set_gate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags)