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|
/* $Id: bs3kit-template-header.h $ */
/** @file
* BS3Kit header for multi-mode code templates.
*/
/*
* 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
*/
#include "bs3kit.h"
/** @defgroup grp_bs3kit_tmpl Multi-Mode Code Templates
* @ingroup grp_bs3kit
*
* Multi-mode code templates avoid duplicating code for each of the CPU modes.
* Instead the code is compiled multiple times, either via multiple inclusions
* into a source files with different mode selectors defined or by multiple
* compiler invocations.
*
* In C/C++ code we're restricted to the compiler target bit count, whereas in
* assembly we can do everything in assembler run (with some 64-bit
* restrictions, that is).
*
* Before \#defining the next mode selector and including
* bs3kit-template-header.h again, include bs3kit-template-footer.h to undefine
* all the previous mode selectors and the macros defined by the header.
*
* @{
*/
#ifdef DOXYGEN_RUNNING
/** @name Template mode selectors.
*
* Exactly one of these are defined by the file including the
* bs3kit-template-header.h header file. When building the code libraries, the
* kBuild target defines this.
*
* @{ */
# define TMPL_RM /**< real mode. */
# define TMPL_PE16 /**< 16-bit protected mode kernel+tss, running 16-bit code, unpaged. */
# define TMPL_PE16_32 /**< 16-bit protected mode kernel+tss, running 32-bit code, unpaged. */
# define TMPL_PE16_V86 /**< 16-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. */
# define TMPL_PE32 /**< 32-bit protected mode kernel+tss, running 32-bit code, unpaged. */
# define TMPL_PE32_16 /**< 32-bit protected mode kernel+tss, running 16-bit code, unpaged. */
# define TMPL_PEV86 /**< 32-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. */
# define TMPL_PP16 /**< 16-bit protected mode kernel+tss, running 16-bit code, paged. */
# define TMPL_PP16_32 /**< 16-bit protected mode kernel+tss, running 32-bit code, paged. */
# define TMPL_PP16_V86 /**< 16-bit protected mode kernel+tss, running virtual 8086 mode code, paged. */
# define TMPL_PP32 /**< 32-bit protected mode kernel+tss, running 32-bit code, paged. */
# define TMPL_PP32_16 /**< 32-bit protected mode kernel+tss, running 16-bit code, paged. */
# define TMPL_PPV86 /**< 32-bit protected mode kernel+tss, running virtual 8086 mode code, paged. */
# define TMPL_PAE16 /**< 16-bit protected mode kernel+tss, running 16-bit code, PAE paging. */
# define TMPL_PAE16_32 /**< 16-bit protected mode kernel+tss, running 32-bit code, PAE paging. */
# define TMPL_PAE16_V86 /**< 16-bit protected mode kernel+tss, running virtual 8086 mode code, PAE paging. */
# define TMPL_PAE32 /**< 32-bit protected mode kernel+tss, running 32-bit code, PAE paging. */
# define TMPL_PAE32_16 /**< 32-bit protected mode kernel+tss, running 16-bit code, PAE paging. */
# define TMPL_PAEV86 /**< 32-bit protected mode kernel+tss, running virtual 8086 mode code, PAE paging. */
# define TMPL_LM16 /**< 16-bit long mode (paged), kernel+tss always 64-bit. */
# define TMPL_LM32 /**< 32-bit long mode (paged), kernel+tss always 64-bit. */
# define TMPL_LM64 /**< 64-bit long mode (paged), kernel+tss always 64-bit. */
/** @} */
/** @name Derived Indicators
* @{ */
# define TMPL_CMN_PE /**< TMPL_PE16 | TMPL_PE16_32 | TMPL_PE16_V86 | TMPL_PE32 | TMPL_PE32_16 | TMPL_PEV86 */
# define TMPL_SYS_PE16 /**< TMPL_PE16 | TMPL_PE16_32 | TMPL_PE16_V86 */
# define TMPL_SYS_PE32 /**< TMPL_PE32 | TMPL_PE32_16 | TMPL_PEV86 */
# define TMPL_CMN_PP /**< TMPL_PP16 | TMPL_PP16_32 | TMPL_PP16_V86 | TMPL_PP32 | TMPL_PP32_16 | TMPL_PPV86 */
# define TMPL_SYS_PP16 /**< TMPL_PP16 | TMPL_PP16_32 | TMPL_PP16_V86 */
# define TMPL_SYS_PP32 /**< TMPL_PP32 | TMPL_PP32_16 | TMPL_PPV86 */
# define TMPL_CMN_PAE /**< TMPL_PAE16 | TMPL_PAE16_32 | TMPL_PAE16_V86 | TMPL_PAE32 | TMPL_PAE32_16 | TMPL_PAEV86 */
# define TMPL_SYS_PAE16 /**< TMPL_PAE16 | TMPL_PAE16_32 | TMPL_PAE16_V86 */
# define TMPL_SYS_PAE32 /**< TMPL_PAE32 | TMPL_PAE32_16 | TMPL_PAEV86 */
# define TMPL_CMN_LM /**< TMPL_LM16 | TMPL_LM32 | TMPL_LM64 */
# define TMPL_CMN_V86 /**< TMPL_PEV86 | TMPL_PE16_V86 | TMPL_PPV86 | TMPL_PP16_V86 | TMPL_PAEV86 | TMPL_PAE16_V86 */
# define TMPL_CMN_R86 /**< TMPL_CMN_V86 | TMPL_RM */
# define TMPL_CMN_PAGING /**< TMPL_CMN_PP | TMPL_CMN_PAE | TMPL_CMN_LM */
# define TMPL_CMN_WEIRD /**< TMPL_PE16_32 | TMPL_PE32_16 | TMPL_PP16_32 | TMPL_PP32_16 | TMPL_PAE16_32 | TMPL_PAE32_16 | TMPL_CMN_WEIRD_V86 */
# define TMPL_CMN_WEIRD_V86 /**< TMPL_PE16_V86 | TMPL_PP16_V86 | TMPL_PAE16_V86 */
/** @} */
/** @def TMPL_NM
* Name mangling macro for the current mode.
*
* Example: TMPL_NM(PrintChr)
*
* @param Name The function or variable name to mangle.
* @sa #TMPL_FAR_NM, #BS3_CMN_NM, #BS3_CMN_FAR_NM
*/
# define TMPL_NM(Name) RT_CONCAT(Name,_mode)
/** @def TMPL_FAR_NM
* Name mangling macro for the current mode into a far function name.
*
* In 32-bit and 64-bit code this does not differ from #TMPL_NM.
*
* Example: TMPL_FAR_NM(PrintChr)
*
* @param Name The function or variable name to mangle.
* @sa #TMPL_NM, #BS3_CMN_FAR_NM, #BS3_CMN_NM
*/
# define TMPL_FAR_NM(Name) RT_CONCAT3(Name,_mode,_far)
/** @def TMPL_MODE_STR
* Short mode description. */
# define TMPL_MODE_STR
/** @def TMPL_HAVE_BIOS
* Indicates that we have direct access to the BIOS (only in real mode). */
# define TMPL_HAVE_BIOS
/** @name For ASM compatability
* @{ */
/** @def TMPL_16BIT
* For ASM compatibility - please use ARCH_BITS == 16. */
# define TMPL_16BIT
/** @def TMPL_32BIT
* For ASM compatibility - please use ARCH_BITS == 32. */
# define TMPL_32BIT
/** @def TMPL_64BIT
* For ASM compatibility - please use ARCH_BITS == 64. */
# define TMPL_64BIT
/** @def TMPL_BITS
* For ASM compatibility - please use ARCH_BITS instead. */
# define TMPL_BITS ARCH_BITS
/** @} */
#else /* !DOXYGEN_RUNNING */
//#undef BS3_CMN_NM
//#undef BS3_CMN_FAR_NM
/*
* Convert TMPL_XXX to TMPL_MODE.
*/
#ifndef TMPL_MODE
# ifdef TMPL_RM
# define TMPL_MODE BS3_MODE_RM
# elif defined(TMPL_PE16)
# define TMPL_MODE BS3_MODE_PE16
# elif defined(TMPL_PE16_32)
# define TMPL_MODE BS3_MODE_PE16_32
# elif defined(TMPL_PE16_V86)
# define TMPL_MODE BS3_MODE_PE16_V86
# elif defined(TMPL_PE32)
# define TMPL_MODE BS3_MODE_PE32
# elif defined(TMPL_PE32_16)
# define TMPL_MODE BS3_MODE_PE32_16
# elif defined(TMPL_PEV86)
# define TMPL_MODE BS3_MODE_PEV86
# elif defined(TMPL_PP16)
# define TMPL_MODE BS3_MODE_PP16
# elif defined(TMPL_PP16_32)
# define TMPL_MODE BS3_MODE_PP16_32
# elif defined(TMPL_PP16_V86)
# define TMPL_MODE BS3_MODE_PP16_V86
# elif defined(TMPL_PP32)
# define TMPL_MODE BS3_MODE_PP32
# elif defined(TMPL_PP32_16)
# define TMPL_MODE BS3_MODE_PP32_16
# elif defined(TMPL_PPV86)
# define TMPL_MODE BS3_MODE_PPV86
# elif defined(TMPL_PAE16)
# define TMPL_MODE BS3_MODE_PAE16
# elif defined(TMPL_PAE16_32)
# define TMPL_MODE BS3_MODE_PAE16_32
# elif defined(TMPL_PAE16_V86)
# define TMPL_MODE BS3_MODE_PAE16_V86
# elif defined(TMPL_PAE32)
# define TMPL_MODE BS3_MODE_PAE32
# elif defined(TMPL_PAE32_16)
# define TMPL_MODE BS3_MODE_PAE32_16
# elif defined(TMPL_PAEV86)
# define TMPL_MODE BS3_MODE_PAEV86
# elif defined(TMPL_LM16)
# define TMPL_MODE BS3_MODE_LM16
# elif defined(TMPL_LM32)
# define TMPL_MODE BS3_MODE_LM32
# elif defined(TMPL_LM64)
# define TMPL_MODE BS3_MODE_LM64
# else
# error "Unable to to figure out the template mode."
# endif
#endif
/*
* Check the code bitness and set derived defines.
*/
#if (TMPL_MODE & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_16
# if ARCH_BITS != 16
# error "BS3_MODE_CODE_16 requires ARCH_BITS to be 16."
# endif
# define TMPL_16BIT
# define TMPL_BITS 16
# define TMPL_UNDERSCORE _
//# define BS3_CMN_NM(Name) RT_CONCAT(Name,_c16)
//# define BS3_CMN_FAR_NM(Name) RT_CONCAT(Name,_f16)
#elif (TMPL_MODE & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_32
# if ARCH_BITS != 32
# error "BS3_MODE_CODE_32 requires ARCH_BITS to be 32."
# endif
# define TMPL_32BIT
# define TMPL_BITS 32
# define TMPL_UNDERSCORE _
//# define BS3_CMN_NM(Name) RT_CONCAT(Name,_c32)
//# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT(Name,_c32)
#elif (TMPL_MODE & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_V86
# if ARCH_BITS != 16
# error "BS3_MODE_CODE_V86 requires ARCH_BITS to be 16."
# endif
# define TMPL_16BIT
# define TMPL_BITS 16
# define TMPL_UNDERSCORE _
//# define BS3_CMN_NM(Name) RT_CONCAT(Name,_c16)
//# define BS3_CMN_FAR_NM(Name) RT_CONCAT(Name,_f16)
# define TMPL_CMN_R86
# define TMPL_CMN_V86
#elif (TMPL_MODE & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_64
# if ARCH_BITS != 64
# error "BS3_MODE_CODE_64 requires ARCH_BITS to be 64."
# endif
# define TMPL_64BIT
# define TMPL_BITS 64
# define TMPL_UNDERSCORE
//# define BS3_CMN_NM(Name) RT_CONCAT(Name,_c64)
//# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT(Name,_c64)
#else
# error "Invalid TMPL_MODE value!"
#endif
/*
* Check the system specific mask and set derived values.
*/
#if (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_RM
# define TMPL_HAVE_BIOS
# define TMPL_CMN_R86
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE16
# define TMPL_SYS_PE16
# define TMPL_CMN_PE
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE32
# define TMPL_SYS_PE32
# define TMPL_CMN_PE
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP16
# define TMPL_SYS_PP16
# define TMPL_CMN_PP
# define TMPL_CMN_PAGING
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP32
# define TMPL_SYS_PP32
# define TMPL_CMN_PP
# define TMPL_CMN_PAGING
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE16
# define TMPL_SYS_PAE16
# define TMPL_CMN_PAE
# define TMPL_CMN_PAGING
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE32
# define TMPL_SYS_PAE32
# define TMPL_CMN_PAE
# define TMPL_CMN_PAGING
#elif (TMPL_MODE & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_LM
# define TMPL_SYS_LM
# define TMPL_CMN_LM
# define TMPL_CMN_PAGING
#else
# error "Invalid TMPL_MODE value!"
#endif
/*
* Mode specific stuff.
*/
#if TMPL_MODE == BS3_MODE_RM
# define TMPL_RM 1
# define TMPL_MODE_STR "real mode"
# define TMPL_NM(Name) RT_CONCAT(Name,_rm)
# define TMPL_MODE_LNAME rm
# define TMPL_MODE_UNAME RM
#elif TMPL_MODE == BS3_MODE_PE16
# define TMPL_PE16 1
# define TMPL_MODE_STR "16-bit prot, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pe16)
# define TMPL_MODE_LNAME pe16
# define TMPL_MODE_UNAME PE16
#elif TMPL_MODE == BS3_MODE_PE16_32
# define TMPL_PE16_32 1
# define TMPL_MODE_STR "16-bit prot, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pe16_32)
# define TMPL_MODE_LNAME pe16_32
# define TMPL_MODE_UNAME PE16_32
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PE16_V86
# define TMPL_PE16_V86 1
# define TMPL_MODE_STR "16-bit prot, v8086"
# define TMPL_NM(Name) RT_CONCAT(Name,_pe16_v86)
# define TMPL_MODE_LNAME pe16_v86
# define TMPL_MODE_UNAME PE16_v86
# define TMPL_CMN_WEIRD
# define TMPL_CMN_WEIRD_V86
#elif TMPL_MODE == BS3_MODE_PE32
# define TMPL_PE32 1
# define TMPL_MODE_STR "32-bit prot, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pe32)
# define TMPL_MODE_LNAME pe32
# define TMPL_MODE_UNAME PE32
#elif TMPL_MODE == BS3_MODE_PE32_16
# define TMPL_PE32_16 1
# define TMPL_MODE_STR "32-bit prot, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pe32_16)
# define TMPL_MODE_LNAME pe32_16
# define TMPL_MODE_UNAME PE32_16
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PEV86
# define TMPL_PEV86 1
# define TMPL_MODE_STR "32-bit prot, v8086"
# define TMPL_NM(Name) RT_CONCAT(Name,_pev86)
# define TMPL_MODE_LNAME pev86
# define TMPL_MODE_UNAME PEV86
#elif TMPL_MODE == BS3_MODE_PP16
# define TMPL_PP16 1
# define TMPL_MODE_STR "16-bit paged, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pp16)
# define TMPL_MODE_LNAME pp16
# define TMPL_MODE_UNAME PP16
#elif TMPL_MODE == BS3_MODE_PP16_32
# define TMPL_PP16_32 1
# define TMPL_MODE_STR "16-bit paged, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pp16_32)
# define TMPL_MODE_LNAME pp16_32
# define TMPL_MODE_UNAME PP16_32
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PP16_V86
# define TMPL_PP16_V86 1
# define TMPL_MODE_STR "16-bit paged, v8086"
# define TMPL_NM(Name) RT_CONCAT(Name,_pp16_v86)
# define TMPL_MODE_LNAME pp16_v86
# define TMPL_MODE_UNAME PP16_v86
# define TMPL_CMN_WEIRD
# define TMPL_CMN_WEIRD_V86
#elif TMPL_MODE == BS3_MODE_PP32
# define TMPL_PP32 1
# define TMPL_MODE_STR "32-bit paged, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pp32)
# define TMPL_MODE_LNAME pp32
# define TMPL_MODE_UNAME PP32
#elif TMPL_MODE == BS3_MODE_PP32_16
# define TMPL_PP32_16 1
# define TMPL_MODE_STR "32-bit paged, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pp32_16)
# define TMPL_MODE_LNAME pp32_16
# define TMPL_MODE_UNAME PP32_16
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PPV86
# define TMPL_PPV86 1
# define TMPL_MODE_STR "32-bit paged, v8086"
# define TMPL_NM(Name) RT_CONCAT(Name,_ppv86)
# define TMPL_MODE_LNAME ppv86
# define TMPL_MODE_UNAME PPV86
#elif TMPL_MODE == BS3_MODE_PAE16
# define TMPL_PAE16 1
# define TMPL_MODE_STR "16-bit pae, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pae16)
# define TMPL_MODE_LNAME pae16
# define TMPL_MODE_UNAME PAE16
#elif TMPL_MODE == BS3_MODE_PAE16_32
# define TMPL_PAE16_32 1
# define TMPL_MODE_STR "16-bit pae, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pae16_32)
# define TMPL_MODE_LNAME pae16_32
# define TMPL_MODE_UNAME PAE16_32
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PAE16_V86
# define TMPL_PAE16_V86 1
# define TMPL_MODE_STR "16-bit pae, v8086"
# define TMPL_NM(Name) RT_CONCAT(Name,_pae16_v86)
# define TMPL_MODE_LNAME pae16_v86
# define TMPL_MODE_UNAME PAE16_v86
# define TMPL_CMN_WEIRD
# define TMPL_CMN_WEIRD_V86
#elif TMPL_MODE == BS3_MODE_PAE32
# define TMPL_PAE32 1
# define TMPL_MODE_STR "32-bit pae, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pae32)
# define TMPL_MODE_LNAME pae32
# define TMPL_MODE_UNAME PAE32
#elif TMPL_MODE == BS3_MODE_PAE32_16
# define TMPL_PAE32_16 1
# define TMPL_MODE_STR "32-bit pae, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_pae32_16)
# define TMPL_MODE_LNAME pae32_16
# define TMPL_MODE_UNAME PAE32_16
# define TMPL_CMN_WEIRD
#elif TMPL_MODE == BS3_MODE_PAEV86
# define TMPL_PAEV86 1
# define TMPL_MODE_STR "32-bit pae, v8086 pae"
# define TMPL_NM(Name) RT_CONCAT(Name,_paev86)
# define TMPL_MODE_LNAME paev86
# define TMPL_MODE_UNAME PAEV86
#elif TMPL_MODE == BS3_MODE_LM16
# define TMPL_LM16 1
# define TMPL_MODE_STR "long, 16-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_lm16)
# define TMPL_MODE_LNAME lm16
# define TMPL_MODE_UNAME LM16
#elif TMPL_MODE == BS3_MODE_LM32
# define TMPL_LM32 1
# define TMPL_MODE_STR "long, 32-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_lm32)
# define TMPL_MODE_LNAME lm32
# define TMPL_MODE_UNAME LM32
#elif TMPL_MODE == BS3_MODE_LM64
# define TMPL_LM64 1
# define TMPL_MODE_STR "long, 64-bit"
# define TMPL_NM(Name) RT_CONCAT(Name,_lm64)
# define TMPL_MODE_LNAME lm64
# define TMPL_MODE_UNAME LM64
#else
# error "Invalid TMPL_MODE value!!"
#endif
#if TMPL_MODE & (BS3_MODE_CODE_16 | BS3_MODE_CODE_V86)
# define TMPL_FAR_NM(Name) RT_CONCAT3(TMPL_NM(Name),_f,ar) /* _far and far may be #defined already. */
#else
# define TMPL_FAR_NM(Name) TMPL_NM(Name)
#endif
/** @def BS3_MODE_DEF
* Macro for defining a mode specific function.
*
* This makes 16-bit mode functions far, while 32-bit and 64-bit are near.
* You need to update the make file to generate near->far wrappers in most
* cases.
*
* @param a_RetType The return type.
* @param a_Name The function basename.
* @param a_Params The parameter list (in parentheses).
*
* @sa BS3_MODE_PROTO
*/
#if ARCH_BITS == 16
# define BS3_MODE_DEF(a_RetType, a_Name, a_Params) BS3_DECL_FAR(a_RetType) TMPL_FAR_NM(a_Name) a_Params
#else
# define BS3_MODE_DEF(a_RetType, a_Name, a_Params) BS3_DECL_NEAR(a_RetType) TMPL_NM(a_Name) a_Params
#endif
#ifndef TMPL_MODE_STR
# error "internal error"
#endif
#endif /* !DOXYGEN_RUNNING */
/** @} */
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