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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) 1997-2002 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(char *arg1, uint32 arg2, uint32 arg3, uint32 *arg4, void **arg5, char *arg6) |
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{ |
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return (int16)CallMacOS6(gsl_ptr, gsl_tvect, arg1, arg2, arg3, arg4, arg5, 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, char *arg2, void **arg3, uint32 *arg4) |
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{ |
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return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, arg2, arg3, 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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|
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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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void *FindLibSymbol(char *lib_str, 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 uint16 proc1[] = { |
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PW(0x558f), // subq.l #2,a7 |
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PW(0x2f08), // move.l a0,-(a7) |
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PW(0x2f3c), PW(0x7077), PW(0x7063), // move.l #'pwpc',-(a7) |
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PW(0x2f3c), PW(0x0000), PW(0x0001), // move.l #kReferenceCFrag,-(a7) |
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PW(0x2f09), // move.l a1,-(a7) |
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PW(0x2f0a), // move.l a2,-(a7) |
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PW(0x2f0b), // move.l a3,-(a7) |
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PW(0x3f3c), PW(0x0001), // (GetSharedLibrary) |
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PW(0xaa5a), // CFMDispatch |
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PW(0x301f), // move.w (a7)+,d0 |
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PW(M68K_RTS) |
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}; |
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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((uint32)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 NULL; |
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|
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// Find symbol |
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static const uint16 proc2[] = { |
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PW(0x558f), // subq.l #2,a7 |
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PW(0x2f00), // move.l d0,-(a7) |
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PW(0x2f08), // move.l a0,-(a7) |
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PW(0x2f09), // move.l a1,-(a7) |
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PW(0x2f0a), // move.l a2,-(a7) |
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PW(0x3f3c), PW(0x0005), // (FindSymbol) |
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PW(0xaa5a), // CFMDispatch |
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PW(0x301f), // move.w (a7)+,d0 |
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PW(M68K_RTS) |
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}; |
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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((uint32)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 NULL; |
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else |
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return (void *)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.value(), FOURCC('p','w','p','c'), 1, (uint32 *)conn_id.addr(), (void **)main_addr.addr(), (char *)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 NULL; |
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res = FindSymbol(conn_id.value(), sym.value(), (void **)sym_addr.addr(), (uint32 *)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 NULL; |
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else |
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return (void *)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 = (uint32)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 = (uint32)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 = (uint32)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 = (uint32)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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|
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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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} |
