| 1 |
cebix |
1.1 |
/* |
| 2 |
|
|
* macos_util.cpp - MacOS definitions/utility functions |
| 3 |
|
|
* |
| 4 |
cebix |
1.10 |
* Basilisk II (C) 1997-2004 Christian Bauer |
| 5 |
cebix |
1.1 |
* |
| 6 |
|
|
* This program is free software; you can redistribute it and/or modify |
| 7 |
|
|
* it under the terms of the GNU General Public License as published by |
| 8 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
|
|
* (at your option) any later version. |
| 10 |
|
|
* |
| 11 |
|
|
* This program is distributed in the hope that it will be useful, |
| 12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
|
|
* GNU General Public License for more details. |
| 15 |
|
|
* |
| 16 |
|
|
* You should have received a copy of the GNU General Public License |
| 17 |
|
|
* along with this program; if not, write to the Free Software |
| 18 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
|
|
*/ |
| 20 |
|
|
|
| 21 |
|
|
#include "sysdeps.h" |
| 22 |
|
|
#include "cpu_emulation.h" |
| 23 |
jlachmann |
1.6 |
#include "adb.h" |
| 24 |
cebix |
1.1 |
#include "main.h" |
| 25 |
|
|
#include "sony.h" |
| 26 |
|
|
#include "disk.h" |
| 27 |
|
|
#include "cdrom.h" |
| 28 |
|
|
#include "macos_util.h" |
| 29 |
|
|
|
| 30 |
|
|
#define DEBUG 0 |
| 31 |
|
|
#include "debug.h" |
| 32 |
|
|
|
| 33 |
|
|
|
| 34 |
|
|
/* |
| 35 |
|
|
* Enqueue QElem to list |
| 36 |
|
|
*/ |
| 37 |
|
|
|
| 38 |
cebix |
1.3 |
void EnqueueMac(uint32 elem, uint32 list) |
| 39 |
cebix |
1.1 |
{ |
| 40 |
|
|
WriteMacInt32(elem + qLink, 0); |
| 41 |
|
|
if (!ReadMacInt32(list + qTail)) { |
| 42 |
|
|
WriteMacInt32(list + qHead, elem); |
| 43 |
|
|
WriteMacInt32(list + qTail, elem); |
| 44 |
|
|
} else { |
| 45 |
|
|
WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem); |
| 46 |
|
|
WriteMacInt32(list + qTail, elem); |
| 47 |
|
|
} |
| 48 |
|
|
} |
| 49 |
|
|
|
| 50 |
|
|
|
| 51 |
|
|
/* |
| 52 |
|
|
* Find first free drive number, starting at num |
| 53 |
|
|
*/ |
| 54 |
|
|
|
| 55 |
|
|
static bool is_drive_number_free(int num) |
| 56 |
|
|
{ |
| 57 |
|
|
uint32 e = ReadMacInt32(0x308 + qHead); |
| 58 |
|
|
while (e) { |
| 59 |
|
|
uint32 d = e - dsQLink; |
| 60 |
cebix |
1.2 |
if ((int)ReadMacInt16(d + dsQDrive) == num) |
| 61 |
cebix |
1.1 |
return false; |
| 62 |
|
|
e = ReadMacInt32(e + qLink); |
| 63 |
|
|
} |
| 64 |
|
|
return true; |
| 65 |
|
|
} |
| 66 |
|
|
|
| 67 |
|
|
int FindFreeDriveNumber(int num) |
| 68 |
|
|
{ |
| 69 |
|
|
while (!is_drive_number_free(num)) |
| 70 |
|
|
num++; |
| 71 |
|
|
return num; |
| 72 |
|
|
} |
| 73 |
|
|
|
| 74 |
|
|
|
| 75 |
|
|
/* |
| 76 |
|
|
* Mount volume with given file handle (call this function when you are unable to |
| 77 |
|
|
* do automatic media change detection and the user has to press a special key |
| 78 |
|
|
* or something to mount a volume; this function will check if there's really a |
| 79 |
|
|
* volume in the drive with SysIsDiskInserted(); volumes which are present on startup |
| 80 |
|
|
* are automatically mounted) |
| 81 |
|
|
*/ |
| 82 |
|
|
|
| 83 |
|
|
void MountVolume(void *fh) |
| 84 |
|
|
{ |
| 85 |
|
|
SonyMountVolume(fh) || DiskMountVolume(fh) || CDROMMountVolume(fh); |
| 86 |
|
|
} |
| 87 |
|
|
|
| 88 |
|
|
|
| 89 |
|
|
/* |
| 90 |
|
|
* Calculate disk image file layout given file size and first 256 data bytes |
| 91 |
|
|
*/ |
| 92 |
|
|
|
| 93 |
|
|
void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size) |
| 94 |
|
|
{ |
| 95 |
|
|
if (size == 419284 || size == 838484) { |
| 96 |
|
|
// 400K/800K DiskCopy image, 84 byte header |
| 97 |
|
|
start_byte = 84; |
| 98 |
|
|
real_size = (size - 84) & ~0x1ff; |
| 99 |
|
|
} else { |
| 100 |
|
|
// 0..511 byte header |
| 101 |
|
|
start_byte = size & 0x1ff; |
| 102 |
|
|
real_size = size - start_byte; |
| 103 |
|
|
} |
| 104 |
|
|
} |
| 105 |
jlachmann |
1.6 |
|
| 106 |
|
|
|
| 107 |
|
|
uint32 DebugUtil(uint32 Selector) |
| 108 |
|
|
{ |
| 109 |
cebix |
1.8 |
switch (Selector) { |
| 110 |
|
|
case duDebuggerGetMax: |
| 111 |
|
|
return 3; |
| 112 |
|
|
case duDebuggerEnter: |
| 113 |
|
|
return 0; |
| 114 |
|
|
case duDebuggerExit: |
| 115 |
|
|
return 0; |
| 116 |
|
|
case duDebuggerPoll: |
| 117 |
|
|
ADBInterrupt(); |
| 118 |
|
|
return 0; |
| 119 |
|
|
default: |
| 120 |
|
|
return (uint32) paramErr; |
| 121 |
|
|
} |
| 122 |
jlachmann |
1.6 |
} |
| 123 |
|
|
|
| 124 |
cebix |
1.8 |
|
| 125 |
|
|
/* |
| 126 |
|
|
* Convert time_t value to MacOS time (seconds since 1.1.1904) |
| 127 |
|
|
*/ |
| 128 |
|
|
|
| 129 |
|
|
uint32 TimeToMacTime(time_t t) |
| 130 |
|
|
{ |
| 131 |
|
|
// This code is taken from glibc 2.2 |
| 132 |
|
|
|
| 133 |
|
|
// Convert to number of seconds elapsed since 1-Jan-1904 |
| 134 |
|
|
struct tm *local = localtime(&t); |
| 135 |
|
|
const int TM_EPOCH_YEAR = 1900; |
| 136 |
|
|
const int MAC_EPOCH_YEAR = 1904; |
| 137 |
|
|
int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3); |
| 138 |
|
|
int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3); |
| 139 |
|
|
int a100 = a4 / 25 - (a4 % 25 < 0); |
| 140 |
|
|
int b100 = b4 / 25 - (b4 % 25 < 0); |
| 141 |
|
|
int a400 = a100 >> 2; |
| 142 |
|
|
int b400 = b100 >> 2; |
| 143 |
|
|
int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
| 144 |
|
|
uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days; |
| 145 |
|
|
return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days)); |
| 146 |
|
|
} |
