| 1 | /* $Id: OS2KTCB.c,v 1.1 2000-07-16 22:21:17 bird Exp $
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| 2 | *
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| 3 | * TCB - Thread Control Block access methods.
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| 4 | *
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| 5 | * Copyright (c) 2000 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | *
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| 9 | */
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| 10 |
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| 11 |
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| 12 | /*******************************************************************************
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| 13 | * Header Files *
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| 14 | *******************************************************************************/
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| 15 | #include <os2.h>
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| 16 | #include <OS2KTCB.h>
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| 17 | #include "options.h"
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| 18 |
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| 19 |
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| 20 | /*******************************************************************************
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| 21 | * External Data *
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| 22 | *******************************************************************************/
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| 23 | /*
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| 24 | * Requires the following import(s):
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| 25 | * pTCBCur
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| 26 | */
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| 27 |
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| 28 |
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| 29 | /*******************************************************************************
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| 30 | * Global Variables *
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| 31 | *******************************************************************************/
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| 32 | int offTCBFailErr = 0;
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| 33 |
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| 34 |
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| 35 |
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| 36 | /*******************************************************************************
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| 37 | * Internal Functions *
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| 38 | *******************************************************************************/
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| 39 | static BOOL initTCB(void);
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| 40 |
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| 41 |
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| 42 | /**
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| 43 | * Init the TCB offset(s).
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| 44 | * @returns Success indicator. (TRUE = success; FALSE = failure)
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| 45 | */
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| 46 | static BOOL initTCB(void)
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| 47 | {
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| 48 | /*
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| 49 | * !!IMPORTANT!!
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| 50 | * Please note that when we don't define top limits here. New fixpack may have
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| 51 | * other values. But since they very seldom do, we'll gamble on no change!
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| 52 | * (Applies to Warp 3 and WS4eB)
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| 53 | * !!IMPORTANT!!
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| 54 | *
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| 55 | * These values are derived from the kernel[d].SDFs and SG24-4640-00.
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| 56 | */
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| 57 |
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| 58 | /* WS4eB GA and above. */
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| 59 | if (options.ulBuild >= 14039)
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| 60 | {
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| 61 | offTCBFailErr = isSMPKernel() ? 0x1fa : 0x1ea;
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| 62 | }
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| 63 | else /* Warp 4 GA - fp12 */
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| 64 | if (options.ulBuild >= 9023 && options.ulBuild <= 9036)
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| 65 | {
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| 66 | offTCBFailErr = 0x18e;
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| 67 | }
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| 68 | else /* Warp 3 fp32 - fp62. */
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| 69 | if (options.ulBuild >= 8255 && options.ulBuild <= 8285)
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| 70 | {
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| 71 | offTCBFailErr = isSMPKernel() ? 0x1ba : 0x14e;
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| 72 | }
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| 73 | else
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| 74 | return FALSE;
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| 75 | return TRUE;
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| 76 | }
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| 77 |
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| 78 |
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| 79 |
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| 80 | /**
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| 81 | * Get the content of the TCB data member TCBFailErr.
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| 82 | * Intended used to save and restore the value in ldrOpenPath.
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| 83 | * @returns Value of TCBFaileErr. (0xffff on error)
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| 84 | * @param pTCB Pointer to TCB.
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| 85 | * @remark Only known kernels are supported!
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| 86 | */
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| 87 | USHORT tcbGetTCBFailErr(PTCB pTCB)
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| 88 | {
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| 89 | if (offTCBFailErr == 0 || !initTCB())
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| 90 | return 0xffff;
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| 91 |
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| 92 | return *(PUSHORT)(void*)((char*)(void*)pTCB + offTCBFailErr);
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| 93 | }
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| 94 |
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| 95 |
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| 96 |
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| 97 | /**
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| 98 | * Set the content of the TCB data member TCBFailErr.
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| 99 | * Intended used to save and restore the value in ldrOpenPath.
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| 100 | * @returns New Value of TCBFaileErr. (0xffff on error)
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| 101 | * @param pTCB Pointer to TCB.
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| 102 | * @param TCBFAileErr New value. (or rather the old one in the save-restore case..)
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| 103 | * @remark Only known kernels are supported!
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| 104 | */
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| 105 | USHORT tcbSetTCBFailErr(PTCB pTCB, USHORT TCBFailErr)
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| 106 | {
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| 107 | if (offTCBFailErr == 0 || !initTCB())
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| 108 | return 0xffff;
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| 109 |
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| 110 | return *(PUSHORT)(void*)((char*)(void*)pTCB + offTCBFailErr) = TCBFailErr;
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| 111 | }
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| 112 |
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| 113 |
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