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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 26 | pmbaty | 1 | /* ACC -- Automatic Compiler Configuration |
| 2 | |||
| 3 | Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer |
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| 4 | All Rights Reserved. |
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| 5 | |||
| 6 | This software is a copyrighted work licensed under the terms of |
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| 7 | the GNU General Public License. Please consult the file "ACC_LICENSE" |
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| 8 | for details. |
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| 9 | |||
| 10 | Markus F.X.J. Oberhumer |
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| 11 | <markus@oberhumer.com> |
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| 12 | http://www.oberhumer.com/ |
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| 13 | */ |
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| 14 | |||
| 15 | |||
| 16 | #define __ACCLIB_DOSALLOC_CH_INCLUDED 1 |
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| 17 | #if !defined(ACCLIB_PUBLIC) |
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| 18 | # define ACCLIB_PUBLIC(r,f) r __ACCLIB_FUNCNAME(f) |
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| 19 | #endif |
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| 20 | |||
| 21 | |||
| 22 | #if (ACC_OS_OS216) |
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| 23 | ACC_EXTERN_C unsigned short __far __pascal DosAllocHuge(unsigned short, unsigned short, unsigned short __far *, unsigned short, unsigned short); |
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| 24 | ACC_EXTERN_C unsigned short __far __pascal DosFreeSeg(unsigned short); |
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| 25 | #endif |
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| 26 | |||
| 27 | |||
| 28 | /*********************************************************************** |
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| 29 | // dos_alloc |
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| 30 | ************************************************************************/ |
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| 31 | |||
| 32 | #if (ACC_OS_DOS16 || ACC_OS_WIN16) |
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| 33 | #if !defined(ACC_CC_AZTECC) |
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| 34 | |||
| 35 | ACCLIB_PUBLIC(void __far*, acc_dos_alloc) (unsigned long size) |
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| 36 | { |
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| 37 | void __far* p = 0; |
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| 38 | union REGS ri, ro; |
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| 39 | |||
| 40 | if ((long)size <= 0) |
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| 41 | return p; |
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| 42 | size = (size + 15) >> 4; |
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| 43 | if (size > 0xffffu) |
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| 44 | return p; |
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| 45 | ri.x.ax = 0x4800; |
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| 46 | ri.x.bx = (unsigned short) size; |
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| 47 | int86(0x21, &ri, &ro); |
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| 48 | if ((ro.x.cflag & 1) == 0) /* if carry flag not set */ |
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| 49 | p = (void __far*) ACC_MK_FP(ro.x.ax, 0); |
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| 50 | return p; |
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| 51 | } |
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| 52 | |||
| 53 | |||
| 54 | ACCLIB_PUBLIC(int, acc_dos_free) (void __far* p) |
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| 55 | { |
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| 56 | union REGS ri, ro; |
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| 57 | struct SREGS rs; |
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| 58 | |||
| 59 | if (!p) |
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| 60 | return 0; |
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| 61 | if (ACC_FP_OFF(p) != 0) |
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| 62 | return -1; |
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| 63 | segread(&rs); |
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| 64 | ri.x.ax = 0x4900; |
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| 65 | rs.es = ACC_FP_SEG(p); |
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| 66 | int86x(0x21, &ri, &ro, &rs); |
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| 67 | if (ro.x.cflag & 1) /* if carry flag set */ |
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| 68 | return -1; |
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| 69 | return 0; |
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| 70 | } |
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| 71 | |||
| 72 | #endif |
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| 73 | #endif |
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| 74 | |||
| 75 | |||
| 76 | #if (ACC_OS_OS216) |
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| 77 | |||
| 78 | ACCLIB_PUBLIC(void __far*, acc_dos_alloc) (unsigned long size) |
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| 79 | { |
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| 80 | void __far* p = 0; |
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| 81 | unsigned short sel = 0; |
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| 82 | |||
| 83 | if ((long)size <= 0) |
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| 84 | return p; |
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| 85 | if (DosAllocHuge((unsigned short)(size >> 16), (unsigned short)size, &sel, 0, 0) == 0) |
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| 86 | p = (void __far*) ACC_MK_FP(sel, 0); |
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| 87 | return p; |
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| 88 | } |
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| 89 | |||
| 90 | ACCLIB_PUBLIC(int, acc_dos_free) (void __far* p) |
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| 91 | { |
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| 92 | if (!p) |
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| 93 | return 0; |
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| 94 | if (ACC_FP_OFF(p) != 0) |
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| 95 | return -1; |
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| 96 | if (DosFreeSeg(ACC_FP_SEG(p)) != 0) |
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| 97 | return -1; |
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| 98 | return 0; |
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| 99 | } |
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| 100 | |||
| 101 | #endif |
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| 102 | |||
| 103 | |||
| 104 | /* |
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| 105 | vi:ts=4:et |
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| 106 | */ |