cpu.h File Reference

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

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

Go to the source code of this file.

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::IO_BITMAP_SIZE = 8192
	The size of the IO bitmap to track 65536 ports.
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 103 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 143 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 208 of file cpu.h.

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

IO_BITMAP_SIZE

constexpr size_t MaxOS::system::IO_BITMAP_SIZE = 8192

constexpr

The size of the IO bitmap to track 65536 ports.

Definition at line 67 of file cpu.h.

Referenced by MaxOS::system::Core::init_tss().