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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-upstream.tar.xz virtualbox-upstream.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp')
-rw-r--r-- | src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp b/src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp new file mode 100644 index 00000000..d77fbd68 --- /dev/null +++ b/src/VBox/Runtime/r0drv/os2/initterm-r0drv-os2.cpp @@ -0,0 +1,98 @@ +/* $Id: initterm-r0drv-os2.cpp $ */ +/** @file + * IPRT - Initialization & Termination, Ring-0 Driver, OS/2. + */ + +/* + * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net> + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-os2-kernel.h" + +#include "internal/initterm.h" +#include <iprt/errcore.h> +#include <iprt/assert.h> + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** Pointer to the 1st DOS variable table. */ +PCDOSTABLE g_pDosTable = NULL; +/** Pointer to the 2nd DOS variable table. */ +PCDOSTABLE2 g_pDosTable2 = NULL; +/** Pointer to the global info segment. */ +PGINFOSEG g_pGIS = NULL; +/** Far 16:16 pointer to the local info segment. + * IIRC this must be converted to a flat pointer when accessed to work correctly on SMP systems. */ +RTFAR16 g_fpLIS = {0, 0}; + + +DECLHIDDEN(int) rtR0InitNative(void) +{ + /* + * Get the DOS Tables. + */ + RTFAR16 fp; + int rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_DOSTABLES, 0, &fp); + AssertMsgReturn(!rc, ("rc=%d\n", rc), VERR_INTERNAL_ERROR); + g_pDosTable = (PCDOSTABLE)RTR0Os2Virt2Flat(fp); + AssertReturn(g_pDosTable, VERR_INTERNAL_ERROR); + g_pDosTable2 = (PCDOSTABLE2)((const uint8_t *)g_pDosTable + g_pDosTable->cul * sizeof(ULONG) + 1); + + /* + * Get the addresses of the two info segments. + */ + rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_SYSINFOSEG, 0, &fp); + AssertMsgReturn(!rc, ("rc=%d\n", rc), VERR_INTERNAL_ERROR); + g_pGIS = (PGINFOSEG)RTR0Os2Virt2Flat(fp); + rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_LOCINFOSEG, 0, &fp); + AssertMsgReturn(!rc, ("rc=%d\n", rc), VERR_INTERNAL_ERROR); + g_fpLIS = fp; + + return VINF_SUCCESS; +} + + +DECLHIDDEN(void) rtR0TermNative(void) +{ + /* nothing to do here yet. */ +} + + +/** + * Converts a 16:16 pointer to a flat pointer. + * + * @returns Flat pointer (NULL if fp is NULL). + * @param fp Far pointer to convert. + */ +RTR0DECL(void *) RTR0Os2Virt2Flat(RTFAR16 fp) +{ + return (void *)KernSelToFlat(((uint32_t)fp.sel << 16) | fp.off); +} + |