| 1 |
/* |
| 2 |
* macos_util.cpp - MacOS definitions/utility functions |
| 3 |
* |
| 4 |
* SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig |
| 5 |
* |
| 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 |
#include "main.h" |
| 24 |
#include "sony.h" |
| 25 |
#include "disk.h" |
| 26 |
#include "cdrom.h" |
| 27 |
#include "xlowmem.h" |
| 28 |
#include "emul_op.h" |
| 29 |
#include "macos_util.h" |
| 30 |
|
| 31 |
#define DEBUG 0 |
| 32 |
#include "debug.h" |
| 33 |
|
| 34 |
|
| 35 |
// Function pointers |
| 36 |
typedef long (*cu_ptr)(void *, uint32); |
| 37 |
static uint32 cu_tvect = 0; |
| 38 |
static inline long CallUniversal(void *arg1, uint32 arg2) |
| 39 |
{ |
| 40 |
return (long)CallMacOS2(cu_ptr, cu_tvect, arg1, arg2); |
| 41 |
} |
| 42 |
typedef int16 (*gsl_ptr)(char *, uint32, uint32, uint32 *, void **, char *); |
| 43 |
static uint32 gsl_tvect = 0; |
| 44 |
static inline int16 GetSharedLibrary(char *arg1, uint32 arg2, uint32 arg3, uint32 *arg4, void **arg5, char *arg6) |
| 45 |
{ |
| 46 |
return (int16)CallMacOS6(gsl_ptr, gsl_tvect, arg1, arg2, arg3, arg4, arg5, arg6); |
| 47 |
} |
| 48 |
typedef int16 (*fs_ptr)(uint32, char *, void **, uint32 *); |
| 49 |
static uint32 fs_tvect = 0; |
| 50 |
static inline int16 FindSymbol(uint32 arg1, char *arg2, void **arg3, uint32 *arg4) |
| 51 |
{ |
| 52 |
return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, arg2, arg3, arg4); |
| 53 |
} |
| 54 |
typedef int16 (*cc_ptr)(uint32 *); |
| 55 |
static uint32 cc_tvect = 0; |
| 56 |
static inline int16 CloseConnection(uint32 *arg1) |
| 57 |
{ |
| 58 |
return (int16)CallMacOS1(cc_ptr, cc_tvect, arg1); |
| 59 |
} |
| 60 |
|
| 61 |
|
| 62 |
/* |
| 63 |
* Reset MacOS utilities |
| 64 |
*/ |
| 65 |
|
| 66 |
void MacOSUtilReset(void) |
| 67 |
{ |
| 68 |
cu_tvect = 0; |
| 69 |
gsl_tvect = 0; |
| 70 |
fs_tvect = 0; |
| 71 |
cc_tvect = 0; |
| 72 |
} |
| 73 |
|
| 74 |
|
| 75 |
/* |
| 76 |
* Enqueue QElem to list |
| 77 |
*/ |
| 78 |
|
| 79 |
void Enqueue(uint32 elem, uint32 list) |
| 80 |
{ |
| 81 |
WriteMacInt32(elem + qLink, 0); |
| 82 |
if (!ReadMacInt32(list + qTail)) { |
| 83 |
WriteMacInt32(list + qHead, elem); |
| 84 |
WriteMacInt32(list + qTail, elem); |
| 85 |
} else { |
| 86 |
WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem); |
| 87 |
WriteMacInt32(list + qTail, elem); |
| 88 |
} |
| 89 |
} |
| 90 |
|
| 91 |
|
| 92 |
/* |
| 93 |
* Find first free drive number, starting at num |
| 94 |
*/ |
| 95 |
|
| 96 |
static bool is_drive_number_free(int num) |
| 97 |
{ |
| 98 |
uint32 e = ReadMacInt32(0x308 + qHead); |
| 99 |
while (e) { |
| 100 |
uint32 d = e - dsQLink; |
| 101 |
if ((int)ReadMacInt16(d + dsQDrive) == num) |
| 102 |
return false; |
| 103 |
e = ReadMacInt32(e + qLink); |
| 104 |
} |
| 105 |
return true; |
| 106 |
} |
| 107 |
|
| 108 |
int FindFreeDriveNumber(int num) |
| 109 |
{ |
| 110 |
while (!is_drive_number_free(num)) |
| 111 |
num++; |
| 112 |
return num; |
| 113 |
} |
| 114 |
|
| 115 |
|
| 116 |
/* |
| 117 |
* Mount volume with given file handle (call this function when you are unable to |
| 118 |
* do automatic media change detection and the user has to press a special key |
| 119 |
* or something to mount a volume; this function will check if there's really a |
| 120 |
* volume in the drive with SysIsDiskInserted(); volumes which are present on startup |
| 121 |
* are automatically mounted) |
| 122 |
*/ |
| 123 |
|
| 124 |
void MountVolume(void *fh) |
| 125 |
{ |
| 126 |
SonyMountVolume(fh) || DiskMountVolume(fh) || CDROMMountVolume(fh); |
| 127 |
} |
| 128 |
|
| 129 |
|
| 130 |
/* |
| 131 |
* Calculate disk image file layout given file size and first 256 data bytes |
| 132 |
*/ |
| 133 |
|
| 134 |
void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size) |
| 135 |
{ |
| 136 |
if (size == 419284 || size == 838484) { |
| 137 |
// 400K/800K DiskCopy image, 84 byte header |
| 138 |
start_byte = 84; |
| 139 |
real_size = (size - 84) & ~0x1ff; |
| 140 |
} else { |
| 141 |
// 0..511 byte header |
| 142 |
start_byte = size & 0x1ff; |
| 143 |
real_size = size - start_byte; |
| 144 |
} |
| 145 |
} |
| 146 |
|
| 147 |
|
| 148 |
/* |
| 149 |
* Find symbol in shared library (using CFM) |
| 150 |
* lib and sym must be Pascal strings! |
| 151 |
*/ |
| 152 |
|
| 153 |
void *FindLibSymbol(char *lib, char *sym) |
| 154 |
{ |
| 155 |
uint32 conn_id = 0; |
| 156 |
void *main_addr = NULL; |
| 157 |
char err[256] = ""; |
| 158 |
uint32 *sym_addr = NULL; |
| 159 |
uint32 sym_class = 0; |
| 160 |
|
| 161 |
D(bug("FindLibSymbol %s in %s...\n", sym+1, lib+1)); |
| 162 |
|
| 163 |
if (ReadMacInt32(XLM_RUN_MODE) == MODE_EMUL_OP) { |
| 164 |
M68kRegisters r; |
| 165 |
|
| 166 |
// Find shared library |
| 167 |
static const uint8 proc1[] = { |
| 168 |
0x55, 0x8f, // subq.l #2,a7 |
| 169 |
0x2f, 0x08, // move.l a0,-(a7) |
| 170 |
0x2f, 0x3c, 0x70, 0x77, 0x70, 0x63, // move.l #'pwpc',-(a7) |
| 171 |
0x2f, 0x3c, 0x00, 0x00, 0x00, 0x01, // move.l #kReferenceCFrag,-(a7) |
| 172 |
0x2f, 0x09, // move.l a1,-(a7) |
| 173 |
0x2f, 0x0a, // move.l a2,-(a7) |
| 174 |
0x2f, 0x0b, // move.l a3,-(a7) |
| 175 |
0x3f, 0x3c, 0x00, 0x01, // (GetSharedLibrary) |
| 176 |
0xaa, 0x5a, // CFMDispatch |
| 177 |
0x30, 0x1f, // move.w (a7)+,d0 |
| 178 |
M68K_RTS >> 8, M68K_RTS & 0xff |
| 179 |
}; |
| 180 |
r.a[0] = (uint32)lib; |
| 181 |
r.a[1] = (uint32)&conn_id; |
| 182 |
r.a[2] = (uint32)&main_addr; |
| 183 |
r.a[3] = (uint32)err; |
| 184 |
Execute68k((uint32)proc1, &r); |
| 185 |
D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], ntohl(conn_id), ntohl((uintptr)main_addr))); |
| 186 |
if (r.d[0]) |
| 187 |
return NULL; |
| 188 |
|
| 189 |
// Find symbol |
| 190 |
static const uint8 proc2[] = { |
| 191 |
0x55, 0x8f, // subq.l #2,a7 |
| 192 |
0x2f, 0x00, // move.l d0,-(a7) |
| 193 |
0x2f, 0x08, // move.l a0,-(a7) |
| 194 |
0x2f, 0x09, // move.l a1,-(a7) |
| 195 |
0x2f, 0x0a, // move.l a2,-(a7) |
| 196 |
0x3f, 0x3c, 0x00, 0x05, // (FindSymbol) |
| 197 |
0xaa, 0x5a, // CFMDispatch |
| 198 |
0x30, 0x1f, // move.w (a7)+,d0 |
| 199 |
M68K_RTS >> 8, M68K_RTS & 0xff |
| 200 |
}; |
| 201 |
r.d[0] = ntohl(conn_id); |
| 202 |
r.a[0] = (uint32)sym; |
| 203 |
r.a[1] = (uint32)&sym_addr; |
| 204 |
r.a[2] = (uint32)&sym_class; |
| 205 |
Execute68k((uint32)proc2, &r); |
| 206 |
D(bug(" FindSymbol1: ret %d, sym_addr %p, sym_class %ld\n", (int16)r.d[0], ntohl((uintptr)sym_addr), ntohl(sym_class))); |
| 207 |
//!! CloseConnection()? |
| 208 |
if (r.d[0]) |
| 209 |
return NULL; |
| 210 |
else |
| 211 |
return (void *)ntohl((uintptr)sym_addr); |
| 212 |
|
| 213 |
} else { |
| 214 |
|
| 215 |
if (GetSharedLibrary == NULL || FindSymbol == NULL) { |
| 216 |
printf("FATAL: FindLibSymbol() called too early\n"); |
| 217 |
return 0; |
| 218 |
} |
| 219 |
int16 res; |
| 220 |
res = GetSharedLibrary(lib, FOURCC('p','w','p','c'), 1, &conn_id, &main_addr, err); |
| 221 |
D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, ntohl(conn_id), ntohl((uintptr)main_addr))); |
| 222 |
if (res) |
| 223 |
return NULL; |
| 224 |
res = FindSymbol(ntohl(conn_id), sym, (void **)&sym_addr, &sym_class); |
| 225 |
D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, ntohl((uintptr)sym_addr), ntohl(sym_class))); |
| 226 |
//!!?? CloseConnection(&conn_id); |
| 227 |
if (res) |
| 228 |
return NULL; |
| 229 |
else |
| 230 |
return (void *)ntohl((uintptr)sym_addr); |
| 231 |
} |
| 232 |
} |
| 233 |
|
| 234 |
|
| 235 |
/* |
| 236 |
* Find CallUniversalProc() TVector |
| 237 |
*/ |
| 238 |
|
| 239 |
void InitCallUniversalProc() |
| 240 |
{ |
| 241 |
cu_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc"); |
| 242 |
D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect)); |
| 243 |
if (cu_tvect == 0) { |
| 244 |
printf("FATAL: Can't find CallUniversalProc()\n"); |
| 245 |
QuitEmulator(); |
| 246 |
} |
| 247 |
|
| 248 |
gsl_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary"); |
| 249 |
D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect)); |
| 250 |
if (gsl_tvect == 0) { |
| 251 |
printf("FATAL: Can't find GetSharedLibrary()\n"); |
| 252 |
QuitEmulator(); |
| 253 |
} |
| 254 |
|
| 255 |
fs_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012FindSymbol"); |
| 256 |
D(bug("FindSymbol TVECT at %08lx\n", fs_tvect)); |
| 257 |
if (fs_tvect == 0) { |
| 258 |
printf("FATAL: Can't find FindSymbol()\n"); |
| 259 |
QuitEmulator(); |
| 260 |
} |
| 261 |
|
| 262 |
cc_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\017CloseConnection"); |
| 263 |
D(bug("CloseConnection TVECT at %08lx\n", cc_tvect)); |
| 264 |
if (cc_tvect == 0) { |
| 265 |
printf("FATAL: Can't find CloseConnection()\n"); |
| 266 |
QuitEmulator(); |
| 267 |
} |
| 268 |
} |
| 269 |
|
| 270 |
|
| 271 |
/* |
| 272 |
* CallUniversalProc |
| 273 |
*/ |
| 274 |
|
| 275 |
long CallUniversalProc(void *upp, uint32 info) |
| 276 |
{ |
| 277 |
if (cu_tvect == 0) { |
| 278 |
printf("FATAL: CallUniversalProc() called too early\n"); |
| 279 |
return 0; |
| 280 |
} |
| 281 |
return CallUniversal(upp, info); |
| 282 |
} |
| 283 |
|
| 284 |
|
| 285 |
/* |
| 286 |
* Convert time_t value to MacOS time (seconds since 1.1.1904) |
| 287 |
*/ |
| 288 |
|
| 289 |
uint32 TimeToMacTime(time_t t) |
| 290 |
{ |
| 291 |
// This code is taken from glibc 2.2 |
| 292 |
|
| 293 |
// Convert to number of seconds elapsed since 1-Jan-1904 |
| 294 |
struct tm *local = localtime(&t); |
| 295 |
const int TM_EPOCH_YEAR = 1900; |
| 296 |
const int MAC_EPOCH_YEAR = 1904; |
| 297 |
int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3); |
| 298 |
int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3); |
| 299 |
int a100 = a4 / 25 - (a4 % 25 < 0); |
| 300 |
int b100 = b4 / 25 - (b4 % 25 < 0); |
| 301 |
int a400 = a100 >> 2; |
| 302 |
int b400 = b100 >> 2; |
| 303 |
int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
| 304 |
uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days; |
| 305 |
return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days)); |
| 306 |
} |
