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|
; $Id: bs3-cpu-basic-2-asm.asm $
;; @file
; BS3Kit - bs3-cpu-basic-2
;
;
; Copyright (C) 2007-2023 Oracle and/or its affiliates.
;
; This file is part of VirtualBox base platform packages, as
; available from https://www.virtualbox.org.
;
; This program is free software; you can redistribute it and/or
; modify it under the terms of the GNU General Public License
; as published by the Free Software Foundation, in version 3 of the
; License.
;
; This program is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
; General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, see <https://www.gnu.org/licenses>.
;
; The contents of this file may alternatively be used under the terms
; of the Common Development and Distribution License Version 1.0
; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
; in the VirtualBox distribution, in which case the provisions of the
; CDDL are applicable instead of those of the GPL.
;
; You may elect to license modified versions of this file under the
; terms and conditions of either the GPL or the CDDL or both.
;
; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
;
;*********************************************************************************************************************************
;* Header Files *
;*********************************************************************************************************************************
%include "bs3kit.mac"
;*********************************************************************************************************************************
;* Global Variables *
;*********************************************************************************************************************************
BS3_BEGIN_DATA16
BS3_GLOBAL_DATA g_bs3CpuBasic2_ud2_FlatAddr, 4
dd _bs3CpuBasic2_ud2 wrt FLAT
;
; CPU mode agnostic test code snippets.
;
BS3_BEGIN_TEXT16
BS3_PROC_BEGIN _bs3CpuBasic2_ud2
.again:
ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_ud2
BS3_PROC_BEGIN _bs3CpuBasic2_salc_ud2
salc ; #UD in 64-bit mode
.again:
ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_salc_ud2
BS3_PROC_BEGIN _bs3CpuBasic2_swapgs
.again:
db 00fh, 001h, 0f8h ; swapgs - #UD when not in 64-bit mode.
jmp .again
BS3_PROC_END _bs3CpuBasic2_swapgs
BS3_PROC_BEGIN _bs3CpuBasic2_Int80
int 80h
.again: ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_Int80
BS3_PROC_BEGIN _bs3CpuBasic2_Int81
int 81h
.again: ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_Int81
BS3_PROC_BEGIN _bs3CpuBasic2_Int82
int 82h
.again: ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_Int82
BS3_PROC_BEGIN _bs3CpuBasic2_Int83
int 83h
.again: ud2
jmp .again
BS3_PROC_END _bs3CpuBasic2_Int83
BS3_PROC_BEGIN _bs3CpuBasic2_iret
iret
BS3_PROC_END _bs3CpuBasic2_iret
AssertCompile(_bs3CpuBasic2_iret_EndProc - _bs3CpuBasic2_iret == 1)
BS3_PROC_BEGIN _bs3CpuBasic2_iret_opsize
iretd
BS3_PROC_END _bs3CpuBasic2_iret_opsize
AssertCompile(_bs3CpuBasic2_iret_opsize_EndProc - _bs3CpuBasic2_iret_opsize == 2)
BS3_PROC_BEGIN _bs3CpuBasic2_iret_rexw
BS3_SET_BITS 64
iretq
BS3_SET_BITS 16
BS3_PROC_END _bs3CpuBasic2_iret_rexw
AssertCompile(_bs3CpuBasic2_iret_rexw_EndProc - _bs3CpuBasic2_iret_rexw == 2)
;
; CPU mode agnostic test code snippets.
;
BS3_BEGIN_TEXT32
;;
; @param [xBP + xCB*2] puDst
; @param [xBP + xCB*3] uNewValue
BS3_PROC_BEGIN_CMN bs3CpuBasic2_Store_mov, BS3_PBC_NEAR
push xBP
mov xBP, xSP
mov xCX, [xBP + xCB*2]
mov xAX, [xBP + xCB*3]
mov [xCX], xAX
leave
ret
BS3_PROC_END_CMN bs3CpuBasic2_Store_mov
;;
; @param [xBP + xCB*2] puDst
; @param [xBP + xCB*3] uNewValue
BS3_PROC_BEGIN_CMN bs3CpuBasic2_Store_xchg, BS3_PBC_NEAR
push xBP
mov xBP, xSP
mov xCX, [xBP + xCB*2]
mov xAX, [xBP + xCB*3]
xchg [xCX], xAX
leave
ret
BS3_PROC_END_CMN bs3CpuBasic2_Store_xchg
;;
; @param [xBP + xCB*2] puDst
; @param [xBP + xCB*3] uNewValue
; @param [xBP + xCB*4] uOldValue
BS3_PROC_BEGIN_CMN bs3CpuBasic2_Store_cmpxchg, BS3_PBC_NEAR
push xBP
mov xBP, xSP
mov xCX, [xBP + xCB*2]
mov xDX, [xBP + xCB*3]
mov xAX, [xBP + xCB*4]
.again:
cmpxchg [xCX], xDX
jnz .again
leave
ret
BS3_PROC_END_CMN bs3CpuBasic2_Store_cmpxchg
;
; Jump code segment 64KB.
;
; There is no ORG directive in OMF mode of course. :-(
;
section BS3JMPTEXT16 align=16 CLASS=BS3CLASS16JMPCODE PRIVATE USE16
GROUP BS3GROUPJMPTEXT16 BS3JMPTEXT16
BS3_SET_BITS 16
; 0000: Start with two int3 filler instructions.
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmptext16_start), function, 2
int3
int3
; 0002: This is the target for forward wrap around jumps, should they succeed.
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_target_wrap_forward), function, 2
ud2
align 8, int3
; 0008
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jb_wrap_backward__ud2), function, 2
db 0ebh, -012h ; jmp (0x0008 + 2 - 0x12 = 0xFFFFFFF8 (-8))
int3
; 000b
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jb_opsize_wrap_backward__ud2), function, 3
db 066h, 0ebh, -016h ; jmp (0x000b + 3 - 0x16 = 0xFFFFFFF8 (-8))
int3
align 0x80, int3
; 0080
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jv16_wrap_backward__ud2), function, 3
db 0e9h ; jmp (0x0080 + 3 - 0x8b = 0xFFFFFFF8 (-8))
dw -08bh
int3
; 0084
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jv16_opsize_wrap_backward__ud2), function, 6
db 066h, 0e9h ; jmp (0x0084 + 6 - 0x92 = 0xFFFFFFF8 (-8))
dd -092h
int3
; 008b
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_call_jv16_wrap_backward__ud2), function, 3
db 0e8h ; call (0x008b + 3 - 0x96)
dw -096h
int3
; 008f
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_call_jv16_opsize_wrap_backward__ud2), function, 6
db 066h, 0e8h ; call (0x008f + 6 - 0x9d = 0xFFFFFFF8 (-8))
dd -09dh
int3
align 0x100, int3 ; Note! Doesn't work correctly for higher values.
times (0xff6b - 0x100) int3
; ff6b
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_call_jv16_wrap_forward__ud2), function, 4
db 0e8h ; call (0xff6b+3 + 0x94 = 0x10002 (65538))
dw 094h
int3
; ff6f
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_call_jv16_opsize_wrap_forward__ud2), function, 7
db 066h, 0e8h ; o32 call (0xff6f+6 + 0x8d = 0x10002 (65538))
dd 08dh
int3
; ff76
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jv16_wrap_forward__ud2), function, 5
db 0e9h ; jmp (0xff76+4 + 0x88 = 0x10002 (65538))
dw 089h
int3
; ff7a
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jv16_opsize_wrap_forward__ud2), function, 7
db 066h, 0e9h ; o32 jmp (0xff7a+6 + 0x82 = 0x10002 (65538))
dd 082h
int3
; ff81
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jb_wrap_forward__ud2), function, 2
db 0ebh, 07fh ; jmp (0xff81+2 + 0x7f = 0x10002 (65538))
int3
; ff84
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_jb_opsize_wrap_forward__ud2), function, 3
db 066h, 0ebh, 07bh ; o32 jmp (0xff84+3 + 0x7b = 0x10002 (65538))
; ff87
times (0xfff8 - 0xff87) int3
; fff8: This is the target for backward wrap around jumps, should they succeed.
BS3_GLOBAL_NAME_EX NAME(bs3CpuBasic2_jmp_target_wrap_backward), function, 2
ud2
times 6 int3
; End of segment.
BS3_BEGIN_TEXT16
;
; Instantiate code templates.
;
BS3_INSTANTIATE_COMMON_TEMPLATE "bs3-cpu-basic-2-template.mac"
BS3_INSTANTIATE_TEMPLATE_WITH_WEIRD_ONES "bs3-cpu-basic-2-template.mac"
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