;; File: cpu.inc


	;; Structure: tss
	;;
	;; >      31         23         15         7        0
	;; >      +----------|----------+----------|----------+
	;; > 0x64 |     I/O map base    | 00000000   0000000T |
	;; >      +----------|----------+----------|----------+
	;; > 0x60 | 00000000   00000000 |         LDT         |
	;; >      +----------|----------+----------|----------+
	;; > 0x5c | 00000000   00000000 |         GS          |
	;; >      +----------|----------+----------|----------+
	;; > 0x58 | 00000000   00000000 |         FS          |
	;; >      +----------|----------+----------|----------+
	;; > 0x54 | 00000000   00000000 |         DS          |
	;; >      +----------|----------+----------|----------+
	;; > 0x50 | 00000000   00000000 |         SS          |
	;; >      +----------|----------+----------|----------+
	;; > 0x4C | 00000000   00000000 |         CS          |
	;; >      +----------|----------+----------|----------+
	;; > 0x48 | 00000000   00000000 |         ES          |
	;; >      +----------|----------+----------|----------+
	;; > 0x44 |                    EDI                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x40 |                    ESI                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x3C |                    EBP                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x38 |                    ESP                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x34 |                    EBX                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x30 |                    EDX                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x2C |                    ECX                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x28 |                    EAX                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x24 |                  EFLAGS                   |
	;; >      +----------|----------+----------|----------+
	;; > 0x20 |                    EIP                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x1C |                    CR3                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x18 | 00000000   00000000 |         SS2         |
	;; >      +----------|----------+----------|----------+
	;; > 0x14 |                   ESP2                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x10 | 00000000   00000000 |         SS1         |
	;; >      +----------|----------+----------|----------+
	;; > 0x0C |                   ESP1                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x08 | 00000000   00000000 |         SS0         |
	;; >      +----------|----------+----------|----------+
	;; > 0x04 |                   ESP0                    |
	;; >      +----------|----------+----------|----------+
	;; > 0x00 | 00000000   00000000 |  old TSS selector   |
	;; >      +----------|----------+----------|----------+
struc tss
	.link:   resw 1
		     resw 1
	.esp0:   resd 1
	.ss0:    resw 1
	         resw 1
	.esp1:   resd 1
	.ss1:    resw 1
	         resw 1
	.esp2:   resd 1
	.ss2:    resw 1
	         resw 1
	.cr3:    resd 1
	.eip:    resd 1
	.eflags: resd 1
	.eax:    resd 1
	.ecx:    resd 1
	.edx:    resd 1
	.ebx:    resd 1
	.esp:    resd 1
	.ebp:    resd 1
	.esi:    resd 1
	.edi:    resd 1
	.es:     resw 1
	         resw 1
	.cs:     resw 1
	         resw 1
	.ss:     resw 1
	         resw 1
	.ds:     resw 1
	         resw 1
	.fs:     resw 1
	         resw 1
	.gs:     resw 1
	         resw 1
	.ldtr:   resw 1
	         resw 1
	.iopb:   resw 1
	         resw 1
endstruc

struc gdt_entry
	.limit_low: resw 1
	.base_low:  resw 1
	.base_mid:  resb 1
	.access:    resb 1
	.flags:     resb 1
	.base_high: resb 1
endstruc

struc idt_entry
	.limit_low: resw 1
	.selector:  resw 1
	.zero:      resb 1
	.attr:      resb 1
	.base_high: resw 1
endstruc

struc intframe
	;; registers
	.edi: resd 1
	.esi: resd 1
	.ebp: resd 1
	.esp: resd 1
	.ebx: resd 1
	.edx: resd 1
	.ecx: resd 1
	.eax: resd 1

	;;
	.gs:    resd 1
	.fs:    resd 1
	.es:    resd 1
	.ds:    resd 1
	.intno: resd 1

	;; by x86 hardware
	.err:    resd 1
	.eip:    resd 1
	.cs:     resd 1
	.eflags: resd 1

	;; crossring
	.useresp: resd 1
	.ss:      resd 1
endstruc