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/* |
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* macos_util.cpp - MacOS definitions/utility functions |
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* |
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* SheepShaver (C) Christian Bauer and Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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#include "main.h" |
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#include "sony.h" |
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#include "disk.h" |
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#include "cdrom.h" |
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#include "xlowmem.h" |
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#include "emul_op.h" |
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#include "macos_util.h" |
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#include "thunks.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// Function pointers |
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typedef long (*cu_ptr)(void *, uint32); |
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static uint32 cu_tvect = 0; |
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static inline long CallUniversal(void *arg1, uint32 arg2) |
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{ |
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return (long)CallMacOS2(cu_ptr, cu_tvect, arg1, arg2); |
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} |
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typedef int16 (*gsl_ptr)(char *, uint32, uint32, uint32 *, void **, char *); |
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static uint32 gsl_tvect = 0; |
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static inline int16 GetSharedLibrary(uintptr arg1, uint32 arg2, uint32 arg3, uintptr arg4, uintptr arg5, uintptr arg6) |
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{ |
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return (int16)CallMacOS6(gsl_ptr, gsl_tvect, (char *)arg1, arg2, arg3, (uint32 *)arg4, (void **)arg5, (char *)arg6); |
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} |
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typedef int16 (*fs_ptr)(uint32, char *, void **, uint32 *); |
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static uint32 fs_tvect = 0; |
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static inline int16 FindSymbol(uint32 arg1, uintptr arg2, uintptr arg3, uintptr arg4) |
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{ |
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return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, (char *)arg2, (void **)arg3, (uint32 **)arg4); |
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} |
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typedef int16 (*cc_ptr)(uint32 *); |
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static uint32 cc_tvect = 0; |
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static inline int16 CloseConnection(uint32 *arg1) |
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{ |
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return (int16)CallMacOS1(cc_ptr, cc_tvect, arg1); |
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} |
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typedef uint32 (*nps_ptr)(uint32); |
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static uint32 nps_tvect = 0; |
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static inline uint32 NewPtrSys(uint32 arg1) |
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{ |
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return CallMacOS1(nps_ptr, nps_tvect, arg1); |
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} |
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typedef void (*d_ptr)(uint32); |
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static uint32 d_tvect = 0; |
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static inline void DisposePtr(uint32 arg1) |
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{ |
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CallMacOS1(d_ptr, d_tvect, arg1); |
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} |
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|
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|
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/* |
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* Reset MacOS utilities |
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*/ |
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|
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void MacOSUtilReset(void) |
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{ |
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cu_tvect = 0; |
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gsl_tvect = 0; |
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fs_tvect = 0; |
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cc_tvect = 0; |
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} |
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|
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|
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/* |
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* Enqueue QElem to list |
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*/ |
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|
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void Enqueue(uint32 elem, uint32 list) |
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{ |
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WriteMacInt32(elem + qLink, 0); |
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if (!ReadMacInt32(list + qTail)) { |
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WriteMacInt32(list + qHead, elem); |
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WriteMacInt32(list + qTail, elem); |
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} else { |
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WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem); |
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WriteMacInt32(list + qTail, elem); |
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} |
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} |
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|
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|
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/* |
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* Find first free drive number, starting at num |
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*/ |
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|
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static bool is_drive_number_free(int num) |
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{ |
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uint32 e = ReadMacInt32(0x308 + qHead); |
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while (e) { |
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uint32 d = e - dsQLink; |
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if ((int)ReadMacInt16(d + dsQDrive) == num) |
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return false; |
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e = ReadMacInt32(e + qLink); |
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} |
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return true; |
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} |
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|
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int FindFreeDriveNumber(int num) |
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{ |
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while (!is_drive_number_free(num)) |
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num++; |
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return num; |
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} |
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|
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|
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/* |
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* Mount volume with given file handle (call this function when you are unable to |
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* do automatic media change detection and the user has to press a special key |
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* or something to mount a volume; this function will check if there's really a |
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* volume in the drive with SysIsDiskInserted(); volumes which are present on startup |
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* are automatically mounted) |
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*/ |
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|
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void MountVolume(void *fh) |
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{ |
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SonyMountVolume(fh) || DiskMountVolume(fh) || CDROMMountVolume(fh); |
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} |
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|
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|
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/* |
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* Calculate disk image file layout given file size and first 256 data bytes |
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*/ |
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|
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void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size) |
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{ |
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if (size == 419284 || size == 838484) { |
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// 400K/800K DiskCopy image, 84 byte header |
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start_byte = 84; |
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real_size = (size - 84) & ~0x1ff; |
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} else { |
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// 0..511 byte header |
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start_byte = size & 0x1ff; |
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real_size = size - start_byte; |
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} |
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} |
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|
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|
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/* |
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* Find symbol in shared library (using CFM) |
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* lib and sym must be Pascal strings! |
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*/ |
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|
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uint32 FindLibSymbol(const char *lib_str, const char *sym_str) |
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{ |
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SheepVar32 conn_id = 0; |
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SheepVar32 main_addr = 0; |
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SheepArray<256> err; |
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WriteMacInt8(err.addr(), 0); |
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SheepVar32 sym_addr = 0; |
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SheepVar32 sym_class = 0; |
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|
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SheepString lib(lib_str); |
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SheepString sym(sym_str); |
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|
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D(bug("FindLibSymbol %s in %s...\n", sym.value()+1, lib.value()+1)); |
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|
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if (ReadMacInt32(XLM_RUN_MODE) == MODE_EMUL_OP) { |
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M68kRegisters r; |
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|
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// Find shared library |
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static const uint8 proc1_template[] = { |
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0x55, 0x8f, // subq.l #2,a7 |
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0x2f, 0x08, // move.l a0,-(a7) |
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0x2f, 0x3c, 0x70, 0x77, 0x70, 0x63, // move.l #'pwpc',-(a7) |
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0x2f, 0x3c, 0x00, 0x00, 0x00, 0x01, // move.l #kReferenceCFrag,-(a7) |
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0x2f, 0x09, // move.l a1,-(a7) |
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0x2f, 0x0a, // move.l a2,-(a7) |
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0x2f, 0x0b, // move.l a3,-(a7) |
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0x3f, 0x3c, 0x00, 0x01, // (GetSharedLibrary) |
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0xaa, 0x5a, // CFMDispatch |
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0x30, 0x1f, // move.w (a7)+,d0 |
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M68K_RTS >> 8, M68K_RTS & 0xff |
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}; |
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BUILD_SHEEPSHAVER_PROCEDURE(proc1); |
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r.a[0] = lib.addr(); |
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r.a[1] = conn_id.addr(); |
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r.a[2] = main_addr.addr(); |
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r.a[3] = err.addr(); |
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Execute68k(proc1, &r); |
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D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], conn_id.value(), main_addr.value())); |
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if (r.d[0]) |
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return 0; |
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|
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// Find symbol |
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static const uint8 proc2_template[] = { |
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0x55, 0x8f, // subq.l #2,a7 |
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0x2f, 0x00, // move.l d0,-(a7) |
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0x2f, 0x08, // move.l a0,-(a7) |
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0x2f, 0x09, // move.l a1,-(a7) |
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0x2f, 0x0a, // move.l a2,-(a7) |
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0x3f, 0x3c, 0x00, 0x05, // (FindSymbol) |
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0xaa, 0x5a, // CFMDispatch |
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0x30, 0x1f, // move.w (a7)+,d0 |
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M68K_RTS >> 8, M68K_RTS & 0xff |
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}; |
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BUILD_SHEEPSHAVER_PROCEDURE(proc2); |
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r.d[0] = conn_id.value(); |
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r.a[0] = sym.addr(); |
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r.a[1] = sym_addr.addr(); |
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r.a[2] = sym_class.addr(); |
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Execute68k(proc2, &r); |
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D(bug(" FindSymbol1: ret %d, sym_addr %p, sym_class %ld\n", (int16)r.d[0], sym_addr.value(), sym_class.value())); |
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//!! CloseConnection()? |
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if (r.d[0]) |
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return 0; |
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else |
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return sym_addr.value(); |
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|
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} else { |
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|
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if (GetSharedLibrary == NULL || FindSymbol == NULL) { |
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printf("FATAL: FindLibSymbol() called too early\n"); |
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return 0; |
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} |
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int16 res; |
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res = GetSharedLibrary(lib.addr(), FOURCC('p','w','p','c'), 1, conn_id.addr(), main_addr.addr(), err.addr()); |
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D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, conn_id.value(), main_addr.value())); |
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if (res) |
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return 0; |
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res = FindSymbol(conn_id.value(), sym.addr(), sym_addr.addr(), sym_class.addr()); |
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D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, sym_addr.value(), sym_class.value())); |
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//!!?? CloseConnection(&conn_id); |
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if (res) |
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return 0; |
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else |
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return sym_addr.value(); |
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} |
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} |
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|
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|
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/* |
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* Find CallUniversalProc() TVector |
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*/ |
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|
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void InitCallUniversalProc() |
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{ |
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cu_tvect = FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc"); |
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D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect)); |
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if (cu_tvect == 0) { |
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printf("FATAL: Can't find CallUniversalProc()\n"); |
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QuitEmulator(); |
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} |
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|
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gsl_tvect = FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary"); |
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D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect)); |
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if (gsl_tvect == 0) { |
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printf("FATAL: Can't find GetSharedLibrary()\n"); |
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QuitEmulator(); |
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} |
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|
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fs_tvect = FindLibSymbol("\014InterfaceLib", "\012FindSymbol"); |
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D(bug("FindSymbol TVECT at %08lx\n", fs_tvect)); |
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if (fs_tvect == 0) { |
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printf("FATAL: Can't find FindSymbol()\n"); |
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QuitEmulator(); |
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} |
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|
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cc_tvect = FindLibSymbol("\014InterfaceLib", "\017CloseConnection"); |
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D(bug("CloseConnection TVECT at %08lx\n", cc_tvect)); |
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if (cc_tvect == 0) { |
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printf("FATAL: Can't find CloseConnection()\n"); |
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QuitEmulator(); |
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} |
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|
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nps_tvect = FindLibSymbol("\014InterfaceLib", "\011NewPtrSys"); |
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D(bug("NewPtrSys TVECT at %08lx\n", nps_tvect)); |
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if (nps_tvect == 0) { |
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printf("FATAL: Can't find NewPtrSys()\n"); |
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QuitEmulator(); |
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} |
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|
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d_tvect = FindLibSymbol("\014InterfaceLib", "\012DisposePtr"); |
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D(bug("DisposePtr TVECT at %08lx\n", d_tvect)); |
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if (d_tvect == 0) { |
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printf("FATAL: Can't find DisposePtr()\n"); |
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QuitEmulator(); |
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} |
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} |
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|
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|
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/* |
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* CallUniversalProc |
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*/ |
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|
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long CallUniversalProc(void *upp, uint32 info) |
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{ |
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if (cu_tvect == 0) { |
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printf("FATAL: CallUniversalProc() called too early\n"); |
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return 0; |
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} |
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return CallUniversal(upp, info); |
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} |
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|
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|
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/* |
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* Convert time_t value to MacOS time (seconds since 1.1.1904) |
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*/ |
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|
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uint32 TimeToMacTime(time_t t) |
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{ |
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// This code is taken from glibc 2.2 |
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|
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// Convert to number of seconds elapsed since 1-Jan-1904 |
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struct tm *local = localtime(&t); |
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const int TM_EPOCH_YEAR = 1900; |
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const int MAC_EPOCH_YEAR = 1904; |
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int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3); |
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int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3); |
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int a100 = a4 / 25 - (a4 % 25 < 0); |
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int b100 = b4 / 25 - (b4 % 25 < 0); |
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int a400 = a100 >> 2; |
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int b400 = b100 >> 2; |
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int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
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uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days; |
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return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days)); |
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} |
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|
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|
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/* |
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* Memory allocators in MacOS system heap zone |
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*/ |
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|
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uint32 Mac_sysalloc(uint32 size) |
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{ |
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return NewPtrSys(size); |
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} |
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|
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void Mac_sysfree(uint32 addr) |
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{ |
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DisposePtr(addr); |
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} |
