Defines Central Processing Unit (CPU) structures and functions for managing CPU state and features. More...

#include <cpuid.h>
#include <cstddef>
#include <cstdint>
#include <system/gdt.h>
#include <hardwarecommunication/acpi.h>
#include <hardwarecommunication/apic.h>
#include <memory/physical.h>

Classes
struct	MaxOS::system::CPUStatus
	Structure representing the CPU state during an interrupt. More...

struct	MaxOS::system::TaskStateSegment
	Structure representing the Task State Segment (TSS) More...

struct	MaxOS::system::StackFrame
	A snapshot of the a frame in the call stack. More...

struct	MaxOS::system::CoreBootInfo
	Information needed when booting a core. More...

class	MaxOS::system::Core
	Represents a CPU core in the system. More...

class	MaxOS::system::CPU
	Manages the CPU and its cores. More...

Typedefs
typedef struct PACKED MaxOS::system::CPUStatus	MaxOS::system::cpu_status_t
	Alias for CPUStatus struct.

typedef struct PACKED MaxOS::system::TaskStateSegment	MaxOS::system::tss_t
	Alias for TaskStateSegment struct.

typedef struct PACKED MaxOS::system::StackFrame	MaxOS::system::stack_frame_t
	Alias for StackFrame struct.

typedef struct PACKED MaxOS::system::CoreBootInfo	MaxOS::system::core_boot_info_t
	Alias for CoreBootInfo struct.

Enumerations
enum class	MaxOS::system::CPU_FEATURE_ECX : int32_t { SSE3 = 1 << 0 , PCLMUL = 1 << 1 , DTES64 = 1 << 2 , MONITOR = 1 << 3 , DS_CPL = 1 << 4 , VMX = 1 << 5 , SMX = 1 << 6 , EST = 1 << 7 , TM2 = 1 << 8 , SSSE3 = 1 << 9 , CID = 1 << 10 , SDBG = 1 << 11 , FMA = 1 << 12 , CX16 = 1 << 13 , XTPR = 1 << 14 , PDCM = 1 << 15 , PCID = 1 << 17 , DCA = 1 << 18 , SSE4_1 = 1 << 19 , SSE4_2 = 1 << 20 , X2APIC = 1 << 21 , MOVBE = 1 << 22 , POPCNT = 1 << 23 , TSC = 1 << 24 , AES = 1 << 25 , XSAVE = 1 << 26 , OSXSAVE = 1 << 27 , AVX = 1 << 28 , F16C = 1 << 29 , RDRAND = 1 << 30 , HYPERVISOR = 1 << 31 }
	CPU features indicated by the ECX register after calling CPUID with EAX = 1. More...

enum class	MaxOS::system::CPU_FEATURE_EDX : int32_t { FPU = 1 << 0 , VME = 1 << 1 , DE = 1 << 2 , PSE = 1 << 3 , TSC = 1 << 4 , MSR = 1 << 5 , PAE = 1 << 6 , MCE = 1 << 7 , CX8 = 1 << 8 , APIC = 1 << 9 , SEP = 1 << 11 , MTRR = 1 << 12 , PGE = 1 << 13 , MCA = 1 << 14 , CMOV = 1 << 15 , PAT = 1 << 16 , PSE36 = 1 << 17 , PSN = 1 << 18 , CLFLUSH = 1 << 19 , DS = 1 << 21 , ACPI = 1 << 22 , MMX = 1 << 23 , FXSR = 1 << 24 , SSE = 1 << 25 , SSE2 = 1 << 26 , SS = 1 << 27 , HTT = 1 << 28 , TM = 1 << 29 , IA64 = 1 << 30 , PBE = 1 << 31 }
	CPU features indicated by the EDX register after calling CPUID with EAX = 1. More...

Variables
constexpr size_t	MaxOS::system::BOOT_STACK_SIZE = 16384
	The size of the stack allocated for booting a core (should align with the startup assembly code for the kernel)

Detailed Description

Defines Central Processing Unit (CPU) structures and functions for managing CPU state and features.

Date: 17th January 2024

Author: Max Tyson

Definition in file cpu.h.

Enumeration Type Documentation

◆ CPU_FEATURE_ECX

enum class MaxOS::system::CPU_FEATURE_ECX : int32_t

strong

CPU features indicated by the ECX register after calling CPUID with EAX = 1.

See also: https://wiki.osdev.org/CPUID as the original author

Definition at line 100 of file cpu.h.

                               : int32_t {
        SSE3 = 1 << 0,
        PCLMUL = 1 << 1,
        DTES64 = 1 << 2,
        MONITOR = 1 << 3,
        DS_CPL = 1 << 4,
        VMX = 1 << 5,
        SMX = 1 << 6,
        EST = 1 << 7,
        TM2 = 1 << 8,
        SSSE3 = 1 << 9,
        CID = 1 << 10,
        SDBG = 1 << 11,
        FMA = 1 << 12,
        CX16 = 1 << 13,
        XTPR = 1 << 14,
        PDCM = 1 << 15,
        PCID = 1 << 17,
        DCA = 1 << 18,
        SSE4_1 = 1 << 19,
        SSE4_2 = 1 << 20,
        X2APIC = 1 << 21,
        MOVBE = 1 << 22,
        POPCNT = 1 << 23,
        TSC = 1 << 24,
        AES = 1 << 25,
        XSAVE = 1 << 26,
        OSXSAVE = 1 << 27,
        AVX = 1 << 28,
        F16C = 1 << 29,
        RDRAND = 1 << 30,
        HYPERVISOR = 1 << 31,
    };

◆ CPU_FEATURE_EDX

enum class MaxOS::system::CPU_FEATURE_EDX : int32_t

strong

CPU features indicated by the EDX register after calling CPUID with EAX = 1.

See also: https://wiki.osdev.org/CPUID as the original author

Definition at line 140 of file cpu.h.

                               : int32_t {
        FPU = 1 << 0,
        VME = 1 << 1,
        DE = 1 << 2,
        PSE = 1 << 3,
        TSC = 1 << 4,
        MSR = 1 << 5,
        PAE = 1 << 6,
        MCE = 1 << 7,
        CX8 = 1 << 8,
        APIC = 1 << 9,
        SEP = 1 << 11,
        MTRR = 1 << 12,
        PGE = 1 << 13,
        MCA = 1 << 14,
        CMOV = 1 << 15,
        PAT = 1 << 16,
        PSE36 = 1 << 17,
        PSN = 1 << 18,
        CLFLUSH = 1 << 19,
        DS = 1 << 21,
        ACPI = 1 << 22,
        MMX = 1 << 23,
        FXSR = 1 << 24,
        SSE = 1 << 25,
        SSE2 = 1 << 26,
        SS = 1 << 27,
        HTT = 1 << 28,
        TM = 1 << 29,
        IA64 = 1 << 30,
        PBE = 1 << 31
    };

Variable Documentation

◆ BOOT_STACK_SIZE

constexpr size_t MaxOS::system::BOOT_STACK_SIZE = 16384

constexpr

The size of the stack allocated for booting a core (should align with the startup assembly code for the kernel)

Definition at line 205 of file cpu.h.

Referenced by MaxOS::system::Core::init_tss(), and MaxOS::system::Core::wake_up().

Classes

Typedefs