blob: 3c4330448c163029f852f1186a247713764f7242 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
#ifndef TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP
#define TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP
#include "arch/context_switching/interrupt_descriptor_table/segment_selector.hpp"
#include <cstdint>
namespace teachos::arch::kernel::cpu
{
/**
* @brief Far Pointer. Address to function located in another code segment.
*/
struct far_pointer
{
void (*function)(); ///< Address of the function we want to call. (0-63)
context_switching::interrupt_descriptor_table::segment_selector
selector; ///< Segment selector pointing to the GDT entry we want to load into register CS. (64-79)
};
/**
* @brief Far call - A call to an instruction located in a different segment than the current code segment but at the
* same privilege level.
*
* @param pointer 64-bit operand size far pointer that we want to call.
*/
auto call(far_pointer pointer) -> void;
} // namespace teachos::arch::kernel::cpu
#endif // TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP
|