| 1 | /* $Id: k32AllocMemEx.cpp,v 1.2 2000-02-18 19:27:30 bird Exp $
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| 2 | *
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| 3 | * k32AllocMemEx - Equivalent to DosAllocMem, but this one
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| 4 | * uses the address in ppv.
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| 5 | *
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| 6 | * Copyright (c) 2000 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 7 | *
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| 8 | * Project Odin Software License can be found in LICENSE.TXT
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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 | /*******************************************************************************
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| 14 | * Defined Constants And Macros *
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| 15 | *******************************************************************************/
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| 16 | #define INCL_DOSMEMMGR
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| 17 | #define INCL_DOSERRORS
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| 18 | #define INCL_OS2KRNL_VM
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| 19 |
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| 20 | #ifndef OBJ_SELMAPALL
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| 21 | #define OBJ_SELMAPALL 0x00000800UL
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| 22 | #endif
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| 23 |
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| 24 |
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| 25 | /*******************************************************************************
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| 26 | * Header Files *
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| 27 | *******************************************************************************/
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| 28 | #include <os2.h>
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| 29 | #include "OS2Krnl.h"
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| 30 | #include "k32.h"
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| 31 | #include "options.h"
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| 32 | #include "dev32.h"
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| 33 | #include "log.h"
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| 34 |
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| 35 |
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| 36 | /* nasty! These should be imported from the kernel later! */
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| 37 |
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| 38 | ULONG vmApiF0[] =
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| 39 | {
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| 40 | 0,
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| 41 | VMA_READ,
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| 42 | VMA_WRITE | VMA_READ,
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| 43 | VMA_WRITE | VMA_READ,
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| 44 | VMA_EXECUTE,
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| 45 | VMA_EXECUTE | VMA_READ,
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| 46 | VMA_WRITE | VMA_EXECUTE | VMA_READ,
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| 47 | VMA_WRITE | VMA_EXECUTE | VMA_READ,
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| 48 | VMA_GUARD,
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| 49 | VMA_READ | VMA_GUARD,
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| 50 | VMA_WRITE | VMA_READ | VMA_GUARD,
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| 51 | VMA_WRITE | VMA_READ | VMA_GUARD,
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| 52 | VMA_EXECUTE | VMA_GUARD,
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| 53 | VMA_EXECUTE | VMA_READ | VMA_GUARD,
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| 54 | VMA_WRITE | VMA_EXECUTE | VMA_READ | VMA_GUARD,
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| 55 | VMA_WRITE | VMA_EXECUTE | VMA_READ | VMA_GUARD
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| 56 | };
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| 57 |
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| 58 |
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| 59 | ULONG vmApiF1[] =
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| 60 | {
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| 61 | 0,
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| 62 | 0,
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| 63 | VMA_DECOMMIT,
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| 64 | VMA_DECOMMIT,
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| 65 | VMA_TILE,
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| 66 | VMA_TILE,
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| 67 | VMA_DECOMMIT | VMA_TILE,
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| 68 | VMA_DECOMMIT | VMA_TILE,
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| 69 | VMA_PROTECTED,
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| 70 | VMA_PROTECTED,
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| 71 | VMA_PROTECTED | VMA_DECOMMIT,
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| 72 | VMA_PROTECTED | VMA_DECOMMIT,
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| 73 | VMA_PROTECTED | VMA_TILE,
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| 74 | VMA_PROTECTED | VMA_TILE,
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| 75 | VMA_PROTECTED | VMA_DECOMMIT | VMA_TILE,
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| 76 | VMA_PROTECTED | VMA_DECOMMIT | VMA_TILE
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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 | * Extended edition of DosAllocMem. Allows you to suggest an address where you
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| 82 | * want the memory allocated.
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| 83 | * @returns OS2 returncode.
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| 84 | * @param ppv Pointer to a pointer. This points to a pointer which points to the
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| 85 | * suggested address of the memory block.
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| 86 | * @param cb Size of the memory block.
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| 87 | * @param flag Flags just as for DosAllocMem.
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| 88 | * @param ulCS CS where the memoryobject were requested.
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| 89 | * @param ulEIP EIP where the memoryobject were requested.
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| 90 | * @sketch
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| 91 | * @status stub
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| 92 | * @author knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 93 | * @remark
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| 94 | */
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| 95 | APIRET k32AllocMemEx(PPVOID ppv, ULONG cb, ULONG flag, ULONG ulCS, ULONG ulEIP)
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| 96 | {
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| 97 | APIRET rc;
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| 98 | ULONG flFlags2;
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| 99 | VMAC vmac = {0};
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| 100 | ULONG cbCommit;
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| 101 | HMTE hMTE;
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| 102 |
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| 103 | if ((flag & ~(PAG_READ | PAG_WRITE | PAG_EXECUTE | PAG_GUARD | PAG_COMMIT
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| 104 | | OBJ_TILE | OBJ_SELMAPALL))
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| 105 | || (flag & (PAG_READ | PAG_WRITE | PAG_EXECUTE)) == 0UL
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| 106 | || cb == 0
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| 107 | || ulCS == 0
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| 108 | || ulEIP == 0
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| 109 | )
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| 110 | return ERROR_INVALID_PARAMETER;
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| 111 | if (cb > 0xC0000000UL)
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| 112 | return ERROR_NOT_ENOUGH_MEMORY;
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| 113 |
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| 114 | vmac.ac_va = (ULONG)*ppv;
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| 115 | cb = (cb + 0xFFFUL) & ~0xFFFUL;
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| 116 | if (flag & PAG_COMMIT)
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| 117 | cbCommit = cb;
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| 118 | flag = vmApiF0[flag & (PAG_READ | PAG_WRITE | PAG_EXECUTE | PAG_GUARD)]
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| 119 | | vmApiF1[(flag & (PAG_COMMIT | PAG_DECOMMIT | OBJ_TILE | OBJ_PROTECTED)) >> 2]
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| 120 | | VMA_USER | VMA_RESIDENT | VMA_LOWMEM2 | VMA_TILE | 0x12000000;
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| 121 | flFlags2 = (flag & VMA_WRITE ? VMAF2_WRITE : 0) | 0x460;
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| 122 |
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| 123 | hMTE = VMGetOwner(ulCS, ulEIP);
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| 124 | rc = VMAllocMem(cb,
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| 125 | cbCommit,
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| 126 | flag,
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| 127 | 0,
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| 128 | 0,
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| 129 | hMTE,
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| 130 | flFlags2,
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| 131 | 0,
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| 132 | (PVMAC)SSToDS(&vmac));
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| 133 |
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| 134 | return rc;
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| 135 | }
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| 136 |
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