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|
;; @file
; VirtualBox YASM/NASM macros, structs, etc.
;
;
; Copyright (C) 2006-2007 Oracle Corporation
;
; This file is part of VirtualBox Open Source Edition (OSE), as
; available from http://www.virtualbox.org. This file is free software;
; you can redistribute it and/or modify it under the terms of the GNU
; General Public License (GPL) as published by the Free Software
; Foundation, in version 2 as it comes in the "COPYING" file of the
; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
;
; The contents of this file may alternatively be used under the terms
; of the Common Development and Distribution License Version 1.0
; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
; VirtualBox OSE 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.
;
%ifndef ___VBox_asmdefs_mac
%define ___VBox_asmdefs_mac
;; @def VBOX_WITH_STATISTICS
; When defined all statistics will be included in the build.
; This is enabled by default in all debug builds.
%ifndef VBOX_WITH_STATISTICS
%ifdef DEBUG
%define VBOX_WITH_STATISTICS
%endif
%endif
%include "iprt/asmdefs.mac"
;; @def VBOX_STRICT
; Enables strict checks in the VBox code.
; This is enabled by default in all debug builds and when RT_STRICT is enabled.
%ifndef VBOX_STRICT
%ifdef DEBUG
%define VBOX_STRICT
%endif
%ifdef RT_STRICT
%define VBOX_STRICT
%endif
%endif
%ifndef VBOX_UART_BASE
%ifndef IPRT_UART_BASE
%define VBOX_UART_BASE 3f8h ; COM1 (see src/VBox/Runtime/common/log/logcom.cpp)
%else
%define VBOX_UART_BASE IPRT_UART_BASE
%endif
%endif
%ifndef VBOX_UART_RATE
%define VBOX_UART_RATE 12 ; 9600 bps
%endif
%ifndef VBOX_UART_PARAMS
%define VBOX_UART_PARAMS 00000011b ; 8n1
%endif
;;
; Initializes the com port to 9600 baud 8n1.
; al and dx are wasted.
; @todo comport init doesn't quite work - therefore we no longer use this! :-/
%macro COM_INIT 0
push eax
push edx
mov dx, VBOX_UART_BASE + 3
mov al, 80h
out dx, al ; make DL register accessible
mov dx, VBOX_UART_BASE
mov ax, VBOX_UART_RATE
out dx, ax ; write bps rate divisor
mov dx, VBOX_UART_BASE + 3
mov al, VBOX_UART_PARAMS
out dx, al ; write parameters
xor ax, ax
mov dx, VBOX_UART_BASE + 4 ; disconnect the UART from the int line
out dx, al
mov dx, VBOX_UART_BASE + 1 ; disable UART ints
out dx, al
mov dx, VBOX_UART_BASE + 2 ; disable the fifos (old software relies on it)
out dx, al
mov dx, VBOX_UART_BASE
in al, dx ; clear receiver
mov dx, VBOX_UART_BASE + 5
in al, dx ; clear line status
inc dx
in al, dx ; clear modem status
pop edx
pop eax
%endmacro
;;
; writes string to comport
; trashes nothing (uses stack though)
%macro COM32_S_PRINT 1+
push esi
push ecx
push eax
mov ecx, edx
shl ecx, 16
call %%stringend
%%string: db %1
%%stringend:
pop esi
mov cx, %%stringend - %%string
%%status:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status
mov al, [esi]
mov dx, VBOX_UART_BASE
out dx, al
inc esi
dec cx
jnz short %%status
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
shr ecx, 16
mov dx, cx
pop eax
pop ecx
pop esi
%endmacro
%macro COM64_S_PRINT 1+
push rsi
push rdx
push rcx
push rax
jmp %%stringend
%%string: db %1
%%stringend:
lea rsi, [%%string wrt rip]
mov cx, %%stringend - %%string
%%status:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status
mov al, [rsi]
mov dx, VBOX_UART_BASE
out dx, al
inc rsi
dec cx
jnz short %%status
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
pop rax
pop rcx
pop rdx
pop rsi
%endmacro
%macro COM_S_PRINT 1+
%ifdef RT_ARCH_AMD64
COM64_S_PRINT %1
%else
COM32_S_PRINT %1
%endif
%endmacro
;; Write char.
; trashes esi
%macro COM_CHAR 1
mov esi, eax
shl esi, 16
mov si, dx
%%status:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status
mov al, %1
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
mov dx, si
shr esi, 16
mov ax, si
%endmacro
;; Write char.
; trashes nothing (uses stack though)
%macro COM32_S_CHAR 1
push eax
push edx
%%status:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status
mov al, %1
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
pop edx
pop eax
%endmacro
%macro COM64_S_CHAR 1
push rax
push rdx
%%status:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status
mov al, %1
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
pop rdx
pop rax
%endmacro
%macro COM_S_CHAR 1
%ifdef RT_ARCH_AMD64
COM64_S_CHAR %1
%else
COM32_S_CHAR %1
%endif
%endmacro
;; Writes newline
; trashes esi
%macro COM_NEWLINE 0
mov esi, eax
shl esi, 16
mov si, dx
%%status1:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status1
mov al, 13
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
mov al, 10
mov dx, VBOX_UART_BASE
out dx, al
%%status3:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status3
mov dx, si
shr esi, 16
mov ax, si
%endmacro
;; Writes newline
; trashes nothing (uses stack though)
%macro COM32_S_NEWLINE 0
push edx
push eax
%%status1:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status1
mov al, 13
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
mov al, 10
mov dx, VBOX_UART_BASE
out dx, al
%%status3:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status3
pop eax
pop edx
%endmacro
%macro COM64_S_NEWLINE 0
push rdx
push rax
%%status1:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status1
mov al, 13
mov dx, VBOX_UART_BASE
out dx, al
%%status2:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status2
mov al, 10
mov dx, VBOX_UART_BASE
out dx, al
%%status3:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status3
pop rax
pop rdx
%endmacro
%macro COM_S_NEWLINE 0
%ifdef RT_ARCH_AMD64
COM64_S_NEWLINE
%else
COM32_S_NEWLINE
%endif
%endmacro
;; Writes a dword from register to com port.
; trashes esi, edi
; edi cannot be used as input register
%macro COM_DWORD_REG 1
mov edi, ebx ; save ebx
mov ebx, %1 ; get value we're supposed to print
mov esi, eax ; save ax
shl esi, 16 ; save dx
mov si, dx
mov ah, 8 ; loop counter.
%%daloop:
rol ebx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
mov dx, si ; restore dx
shr esi, 16
mov ax, si ; restore ax
mov ebx, edi ; restore ebx
%endmacro
;; Writes a dword from register to com port.
; trashes nothing (uses stack though)
%macro COM32_S_DWORD_REG 1
push edx
push eax
push ebx
mov ebx, %1 ; get value we're supposed to print
mov ah, 8 ; loop counter.
%%daloop:
rol ebx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
pop ebx
pop eax
pop edx
%endmacro
%macro COM64_S_DWORD_REG 1
push rdx
push rax
push rbx
mov ebx, %1 ; get value we're supposed to print
mov ah, 8 ; loop counter.
%%daloop:
rol ebx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
pop rbx
pop rax
pop rdx
%endmacro
%macro COM_S_DWORD_REG 1
%ifdef RT_ARCH_AMD64
COM64_S_DWORD_REG %1
%else
COM32_S_DWORD_REG %1
%endif
%endmacro
;; Writes a qword from register to com port.
; trashes nothing (uses stack though)
%macro COM64_S_QWORD_REG 1
push rdx
push rax
push rbx
mov rbx, %1 ; get value we're supposed to print
mov ah, 16 ; loop counter.
%%daloop:
rol rbx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
pop rbx
pop rax
pop rdx
%endmacro
;; Writes a byte from register to com port.
; trashes nothing (uses stack though)
%macro COM32_S_BYTE_REG 1
push edx
push eax
push ebx
mov ebx, %1 ; get value we're supposed to print
mov ah, 2 ; loop counter.
ror ebx, 8 ; shift next digit to the front
%%daloop:
rol ebx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
pop ebx
pop eax
pop edx
%endmacro
%macro COM64_S_BYTE_REG 1
push rdx
push rax
push rbx
mov ebx, %1 ; get value we're supposed to print
mov ah, 2 ; loop counter.
ror ebx, 8 ; shift next digit to the front
%%daloop:
rol ebx, 4 ; shift next digit to the front
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
dec ah
jnz short %%daloop ; loop
pop rbx
pop rax
pop rdx
%endmacro
%macro COM_S_BYTE_REG 1
%ifdef RT_ARCH_AMD64
COM64_S_BYTE_REG %1
%else
COM32_S_BYTE_REG %1
%endif
%endmacro
;; Writes a single hex digit from register to com port.
; trashes nothing (uses stack though)
%macro COM32_S_DIGIT_REG 1
push edx
push eax
push ebx
mov ebx, %1 ; get value we're supposed to print
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
pop ebx
pop eax
pop edx
%endmacro
%macro COM64_S_DIGIT_REG 1
push rdx
push rax
push rbx
mov ebx, %1 ; get value we're supposed to print
%%status0:
mov dx, VBOX_UART_BASE + 5
in al, dx
test al, 20h
jz short %%status0
mov al, bl ; get next char
and al, 0fh
cmp al, 10
jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
add al, '0'
jmp short %%print
%%hex:
add al, 'a' - 10
%%print:
mov dx, VBOX_UART_BASE
out dx, al
pop rbx
pop rax
pop rdx
%endmacro
%macro COM_S_DIGIT_REG 1
%ifdef RT_ARCH_AMD64
COM64_S_DIGIT_REG %1
%else
COM32_S_DIGIT_REG %1
%endif
%endmacro
;;
; Loops for a while.
; ecx is trashed.
%macro LOOP_A_WHILE 0
xor ecx, ecx
dec ecx
shr ecx, 1
%%looplabel:
nop
nop
nop
dec ecx
jnz short %%looplabel
%endmacro
;;
; Loops for a short while.
; ecx is trashed.
%macro LOOP_SHORT_WHILE 0
xor ecx, ecx
dec ecx
shr ecx, 4
%%looplabel:
nop
nop
dec ecx
jnz short %%looplabel
%endmacro
%endif
|
