SheepShaver/src/macos_util.cpp

/*
 *  macos_util.cpp - MacOS definitions/utility functions
 *
 *  SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "main.h"
#include "sony.h"
#include "disk.h"
#include "cdrom.h"
#include "xlowmem.h"
#include "emul_op.h"
#include "macos_util.h"
#include "thunks.h"

#define DEBUG 0
#include "debug.h"


// Function pointers
typedef long (*cu_ptr)(void *, uint32);
static uint32 cu_tvect = 0;
static inline long CallUniversal(void *arg1, uint32 arg2)
{
        return (long)CallMacOS2(cu_ptr, cu_tvect, arg1, arg2);
}
typedef int16 (*gsl_ptr)(char *, uint32, uint32, uint32 *, void **, char *);
static uint32 gsl_tvect = 0;
static inline int16 GetSharedLibrary(uintptr arg1, uint32 arg2, uint32 arg3, uintptr arg4, uintptr arg5, uintptr arg6)
{
        return (int16)CallMacOS6(gsl_ptr, gsl_tvect, (char *)arg1, arg2, arg3, (uint32 *)arg4, (void **)arg5, (char *)arg6);
}
typedef int16 (*fs_ptr)(uint32, char *, void **, uint32 *);
static uint32 fs_tvect = 0;
static inline int16 FindSymbol(uint32 arg1, uintptr arg2, uintptr arg3, uintptr arg4)
{
        return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, (char *)arg2, (void **)arg3, (uint32 **)arg4);
}
typedef int16 (*cc_ptr)(uint32 *);
static uint32 cc_tvect = 0;
static inline int16 CloseConnection(uint32 *arg1)
{
        return (int16)CallMacOS1(cc_ptr, cc_tvect, arg1);
}
typedef void *(*nps_ptr)(uint32);
static uint32 nps_tvect = 0;
static inline void *NewPtrSys(uint32 arg1)
{
        return (void *)CallMacOS1(nps_ptr, nps_tvect, arg1);
}
typedef void (*d_ptr)(void *);
static uint32 d_tvect = 0;
static inline void DisposePtr(void *arg1)
{
        CallMacOS1(d_ptr, d_tvect, arg1);
}


/*
 *  Reset MacOS utilities
 */

void MacOSUtilReset(void)
{
        cu_tvect = 0;
        gsl_tvect = 0;
        fs_tvect = 0;
        cc_tvect = 0;
}


/*
 *  Enqueue QElem to list
 */

void Enqueue(uint32 elem, uint32 list)
{
        WriteMacInt32(elem + qLink, 0);
        if (!ReadMacInt32(list + qTail)) {
                WriteMacInt32(list + qHead, elem);
                WriteMacInt32(list + qTail, elem);
        } else {
                WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem);
                WriteMacInt32(list + qTail, elem);
        }
}


/*
 *  Find first free drive number, starting at num
 */

static bool is_drive_number_free(int num)
{
        uint32 e = ReadMacInt32(0x308 + qHead);
        while (e) {
                uint32 d = e - dsQLink;
                if ((int)ReadMacInt16(d + dsQDrive) == num)
                        return false;
                e = ReadMacInt32(e + qLink);
        }
        return true;
}

int FindFreeDriveNumber(int num)
{
        while (!is_drive_number_free(num))
                num++;
        return num;
}


/*
 *  Mount volume with given file handle (call this function when you are unable to
 *  do automatic media change detection and the user has to press a special key
 *  or something to mount a volume; this function will check if there's really a
 *  volume in the drive with SysIsDiskInserted(); volumes which are present on startup
 *  are automatically mounted)
 */

void MountVolume(void *fh)
{
        SonyMountVolume(fh) || DiskMountVolume(fh) || CDROMMountVolume(fh);
}


/*
 *  Calculate disk image file layout given file size and first 256 data bytes
 */

void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size)
{
        if (size == 419284 || size == 838484) {
                // 400K/800K DiskCopy image, 84 byte header
                start_byte = 84;
                real_size = (size - 84) & ~0x1ff;
        } else {
                // 0..511 byte header
                start_byte = size & 0x1ff;
                real_size = size - start_byte;
        }
}


/*
 *  Find symbol in shared library (using CFM)
 *  lib and sym must be Pascal strings!
 */

void *FindLibSymbol(char *lib_str, char *sym_str)
{
        SheepVar32 conn_id = 0;
        SheepVar32 main_addr = 0;
        SheepArray<256> err;
        WriteMacInt8(err.addr(), 0);
        SheepVar32 sym_addr = 0;
        SheepVar32 sym_class = 0;

        SheepString lib(lib_str);
        SheepString sym(sym_str);

        D(bug("FindLibSymbol %s in %s...\n", sym.value()+1, lib.value()+1));

        if (ReadMacInt32(XLM_RUN_MODE) == MODE_EMUL_OP) {
                M68kRegisters r;
        
                // Find shared library
                static const uint16 proc1[] = {
                        PW(0x558f),                                                     // subq.l       #2,a7
                        PW(0x2f08),                                                     // move.l       a0,-(a7)
                        PW(0x2f3c), PW(0x7077), PW(0x7063),     // move.l       #'pwpc',-(a7)
                        PW(0x2f3c), PW(0x0000), PW(0x0001),     // move.l       #kReferenceCFrag,-(a7)
                        PW(0x2f09),                                                     // move.l       a1,-(a7)
                        PW(0x2f0a),                                                     // move.l       a2,-(a7)
                        PW(0x2f0b),                                                     // move.l       a3,-(a7)
                        PW(0x3f3c), PW(0x0001),                         // (GetSharedLibrary)
                        PW(0xaa5a),                                                     // CFMDispatch
                        PW(0x301f),                                                     // move.w       (a7)+,d0
                        PW(M68K_RTS)
                };
                r.a[0] = lib.addr();
                r.a[1] = conn_id.addr();
                r.a[2] = main_addr.addr();
                r.a[3] = err.addr();
                Execute68k(Host2MacAddr((uint8 *)proc1), &r);
                D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], conn_id.value(), main_addr.value()));
                if (r.d[0])
                        return NULL;
        
                // Find symbol
                static const uint16 proc2[] = {
                        PW(0x558f),                                     // subq.l       #2,a7
                        PW(0x2f00),                                     // move.l       d0,-(a7)
                        PW(0x2f08),                                     // move.l       a0,-(a7)
                        PW(0x2f09),                                     // move.l       a1,-(a7)
                        PW(0x2f0a),                                     // move.l       a2,-(a7)
                        PW(0x3f3c), PW(0x0005),         // (FindSymbol)
                        PW(0xaa5a),                                     // CFMDispatch
                        PW(0x301f),                                     // move.w       (a7)+,d0
                        PW(M68K_RTS)
                };
                r.d[0] = conn_id.value();
                r.a[0] = sym.addr();
                r.a[1] = sym_addr.addr();
                r.a[2] = sym_class.addr();
                Execute68k(Host2MacAddr((uint8 *)proc2), &r);
                D(bug(" FindSymbol1: ret %d, sym_addr %p, sym_class %ld\n", (int16)r.d[0], sym_addr.value(), sym_class.value()));
//!! CloseConnection()?
                if (r.d[0])
                        return NULL;
                else
                        return (void *)sym_addr.value();

        } else {

                if (GetSharedLibrary == NULL || FindSymbol == NULL) {
                        printf("FATAL: FindLibSymbol() called too early\n");
                        return 0;
                }
                int16 res;
                res = GetSharedLibrary(lib.addr(), FOURCC('p','w','p','c'), 1, conn_id.addr(), main_addr.addr(), err.addr());
                D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, conn_id.value(), main_addr.value()));
                if (res)
                        return NULL;
                res = FindSymbol(conn_id.value(), sym.addr(), sym_addr.addr(), sym_class.addr());
                D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, sym_addr.value(), sym_class.value()));
//!!??          CloseConnection(&conn_id);
                if (res)
                        return NULL;
                else
                        return (void *)sym_addr.value();
        }
}


/*
 *  Find CallUniversalProc() TVector
 */

void InitCallUniversalProc()
{
        cu_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc");
        D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect));
        if (cu_tvect == 0) {
                printf("FATAL: Can't find CallUniversalProc()\n");
                QuitEmulator();
        }

        gsl_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary");
        D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect));
        if (gsl_tvect == 0) {
                printf("FATAL: Can't find GetSharedLibrary()\n");
                QuitEmulator();
        }

        fs_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012FindSymbol");
        D(bug("FindSymbol TVECT at %08lx\n", fs_tvect));
        if (fs_tvect == 0) {
                printf("FATAL: Can't find FindSymbol()\n");
                QuitEmulator();
        }

        cc_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\017CloseConnection");
        D(bug("CloseConnection TVECT at %08lx\n", cc_tvect));
        if (cc_tvect == 0) {
                printf("FATAL: Can't find CloseConnection()\n");
                QuitEmulator();
        }

        nps_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\011NewPtrSys");
        D(bug("NewPtrSys TVECT at %08lx\n", nps_tvect));
        if (nps_tvect == 0) {
                printf("FATAL: Can't find NewPtrSys()\n");
                QuitEmulator();
        }

        d_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012DisposePtr");
        D(bug("DisposePtr TVECT at %08lx\n", d_tvect));
        if (d_tvect == 0) {
                printf("FATAL: Can't find DisposePtr()\n");
                QuitEmulator();
        }
}


/*
 *  CallUniversalProc
 */

long CallUniversalProc(void *upp, uint32 info)
{
        if (cu_tvect == 0) {
                printf("FATAL: CallUniversalProc() called too early\n");
                return 0;
        }
        return CallUniversal(upp, info);
}


/*
 *  Convert time_t value to MacOS time (seconds since 1.1.1904)
 */

uint32 TimeToMacTime(time_t t)
{
        // This code is taken from glibc 2.2

        // Convert to number of seconds elapsed since 1-Jan-1904
        struct tm *local = localtime(&t);
        const int TM_EPOCH_YEAR = 1900;
        const int MAC_EPOCH_YEAR = 1904;
        int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);
        int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3);
        int a100 = a4 / 25 - (a4 % 25 < 0);
        int b100 = b4 / 25 - (b4 % 25 < 0);
        int a400 = a100 >> 2;
        int b400 = b100 >> 2;
        int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
        uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days;
        return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days));
}


/*
 *  Memory allocators in MacOS system heap zone
 */

void *Mac_sysalloc(uint32 size)
{
        return NewPtrSys(size);
}

void Mac_sysfree(void *p)
{
        DisposePtr(p);
}
Revision:	1.8
Committed:	2004-11-13T14:09:15Z (20 years ago) by gbeauche
Branch:	MAIN
Changes since 1.7:	+8 -8 lines
Log Message:	Implement Direct Addressing mode similarly to Basilisk II. This is to get SheepShaver working on OSes that don't support maipping of Low Memory globals at 0x00000000, e.g. Windows.
#	User	Rev	Content
1	cebix	1.1	/*
2			* macos_util.cpp - MacOS definitions/utility functions
3			*
4	cebix	1.6	* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
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			#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	gbeauche	1.4	#include "thunks.h"
31	cebix	1.1
32			#define DEBUG 0
33			#include "debug.h"
34
35
36			// Function pointers
37			typedef long (cu_ptr)(void , uint32);
38			static uint32 cu_tvect = 0;
39			static inline long CallUniversal(void *arg1, uint32 arg2)
40			{
41			return (long)CallMacOS2(cu_ptr, cu_tvect, arg1, arg2);
42			}
43			typedef int16 (gsl_ptr)(char , uint32, uint32, uint32 , void , char );
44			static uint32 gsl_tvect = 0;
45	gbeauche	1.8	static inline int16 GetSharedLibrary(uintptr arg1, uint32 arg2, uint32 arg3, uintptr arg4, uintptr arg5, uintptr arg6)
46	cebix	1.1	{
47	gbeauche	1.8	return (int16)CallMacOS6(gsl_ptr, gsl_tvect, (char )arg1, arg2, arg3, (uint32 )arg4, (void *)arg5, (char )arg6);
48	cebix	1.1	}
49			typedef int16 (fs_ptr)(uint32, char , void *, uint32 );
50			static uint32 fs_tvect = 0;
51	gbeauche	1.8	static inline int16 FindSymbol(uint32 arg1, uintptr arg2, uintptr arg3, uintptr arg4)
52	cebix	1.1	{
53	gbeauche	1.8	return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, (char )arg2, (void )arg3, (uint32 *)arg4);
54	cebix	1.1	}
55			typedef int16 (cc_ptr)(uint32 );
56			static uint32 cc_tvect = 0;
57			static inline int16 CloseConnection(uint32 *arg1)
58			{
59			return (int16)CallMacOS1(cc_ptr, cc_tvect, arg1);
60			}
61	gbeauche	1.7	typedef void (nps_ptr)(uint32);
62			static uint32 nps_tvect = 0;
63			static inline void *NewPtrSys(uint32 arg1)
64			{
65			return (void *)CallMacOS1(nps_ptr, nps_tvect, arg1);
66			}
67			typedef void (d_ptr)(void );
68			static uint32 d_tvect = 0;
69			static inline void DisposePtr(void *arg1)
70			{
71			CallMacOS1(d_ptr, d_tvect, arg1);
72			}
73	cebix	1.1
74
75			/*
76			* Reset MacOS utilities
77			*/
78
79			void MacOSUtilReset(void)
80			{
81			cu_tvect = 0;
82			gsl_tvect = 0;
83			fs_tvect = 0;
84			cc_tvect = 0;
85			}
86
87
88			/*
89			* Enqueue QElem to list
90			*/
91
92			void Enqueue(uint32 elem, uint32 list)
93			{
94			WriteMacInt32(elem + qLink, 0);
95			if (!ReadMacInt32(list + qTail)) {
96			WriteMacInt32(list + qHead, elem);
97			WriteMacInt32(list + qTail, elem);
98			} else {
99			WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem);
100			WriteMacInt32(list + qTail, elem);
101			}
102			}
103
104
105			/*
106			* Find first free drive number, starting at num
107			*/
108
109			static bool is_drive_number_free(int num)
110			{
111			uint32 e = ReadMacInt32(0x308 + qHead);
112			while (e) {
113			uint32 d = e - dsQLink;
114			if ((int)ReadMacInt16(d + dsQDrive) == num)
115			return false;
116			e = ReadMacInt32(e + qLink);
117			}
118			return true;
119			}
120
121			int FindFreeDriveNumber(int num)
122			{
123			while (!is_drive_number_free(num))
124			num++;
125			return num;
126			}
127
128
129			/*
130			* Mount volume with given file handle (call this function when you are unable to
131			* do automatic media change detection and the user has to press a special key
132			* or something to mount a volume; this function will check if there's really a
133			* volume in the drive with SysIsDiskInserted(); volumes which are present on startup
134			* are automatically mounted)
135			*/
136
137			void MountVolume(void *fh)
138			{
139			SonyMountVolume(fh) \|\| DiskMountVolume(fh) \|\| CDROMMountVolume(fh);
140			}
141
142
143			/*
144			* Calculate disk image file layout given file size and first 256 data bytes
145			*/
146
147			void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size)
148			{
149			if (size == 419284 \|\| size == 838484) {
150			// 400K/800K DiskCopy image, 84 byte header
151			start_byte = 84;
152			real_size = (size - 84) & ~0x1ff;
153			} else {
154			// 0..511 byte header
155			start_byte = size & 0x1ff;
156			real_size = size - start_byte;
157			}
158			}
159
160
161			/*
162			* Find symbol in shared library (using CFM)
163			* lib and sym must be Pascal strings!
164			*/
165
166	gbeauche	1.4	void FindLibSymbol(char lib_str, char *sym_str)
167	cebix	1.1	{
168	gbeauche	1.4	SheepVar32 conn_id = 0;
169			SheepVar32 main_addr = 0;
170			SheepArray<256> err;
171			WriteMacInt8(err.addr(), 0);
172			SheepVar32 sym_addr = 0;
173			SheepVar32 sym_class = 0;
174	cebix	1.1
175	gbeauche	1.4	SheepString lib(lib_str);
176			SheepString sym(sym_str);
177
178			D(bug("FindLibSymbol %s in %s...\n", sym.value()+1, lib.value()+1));
179	cebix	1.1
180	gbeauche	1.2	if (ReadMacInt32(XLM_RUN_MODE) == MODE_EMUL_OP) {
181	cebix	1.1	M68kRegisters r;
182
183			// Find shared library
184	gbeauche	1.5	static const uint16 proc1[] = {
185			PW(0x558f), // subq.l #2,a7
186			PW(0x2f08), // move.l a0,-(a7)
187			PW(0x2f3c), PW(0x7077), PW(0x7063), // move.l #'pwpc',-(a7)
188			PW(0x2f3c), PW(0x0000), PW(0x0001), // move.l #kReferenceCFrag,-(a7)
189			PW(0x2f09), // move.l a1,-(a7)
190			PW(0x2f0a), // move.l a2,-(a7)
191			PW(0x2f0b), // move.l a3,-(a7)
192			PW(0x3f3c), PW(0x0001), // (GetSharedLibrary)
193			PW(0xaa5a), // CFMDispatch
194			PW(0x301f), // move.w (a7)+,d0
195			PW(M68K_RTS)
196	cebix	1.1	};
197	gbeauche	1.4	r.a[0] = lib.addr();
198			r.a[1] = conn_id.addr();
199			r.a[2] = main_addr.addr();
200			r.a[3] = err.addr();
201	gbeauche	1.8	Execute68k(Host2MacAddr((uint8 *)proc1), &r);
202	gbeauche	1.4	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], conn_id.value(), main_addr.value()));
203	cebix	1.1	if (r.d[0])
204			return NULL;
205
206			// Find symbol
207	gbeauche	1.5	static const uint16 proc2[] = {
208			PW(0x558f), // subq.l #2,a7
209			PW(0x2f00), // move.l d0,-(a7)
210			PW(0x2f08), // move.l a0,-(a7)
211			PW(0x2f09), // move.l a1,-(a7)
212			PW(0x2f0a), // move.l a2,-(a7)
213			PW(0x3f3c), PW(0x0005), // (FindSymbol)
214			PW(0xaa5a), // CFMDispatch
215			PW(0x301f), // move.w (a7)+,d0
216			PW(M68K_RTS)
217	cebix	1.1	};
218	gbeauche	1.4	r.d[0] = conn_id.value();
219			r.a[0] = sym.addr();
220			r.a[1] = sym_addr.addr();
221			r.a[2] = sym_class.addr();
222	gbeauche	1.8	Execute68k(Host2MacAddr((uint8 *)proc2), &r);
223	gbeauche	1.4	D(bug(" FindSymbol1: ret %d, sym_addr %p, sym_class %ld\n", (int16)r.d[0], sym_addr.value(), sym_class.value()));
224	cebix	1.1	//!! CloseConnection()?
225			if (r.d[0])
226			return NULL;
227			else
228	gbeauche	1.4	return (void *)sym_addr.value();
229	cebix	1.1
230			} else {
231
232			if (GetSharedLibrary == NULL \|\| FindSymbol == NULL) {
233			printf("FATAL: FindLibSymbol() called too early\n");
234			return 0;
235			}
236			int16 res;
237	gbeauche	1.8	res = GetSharedLibrary(lib.addr(), FOURCC('p','w','p','c'), 1, conn_id.addr(), main_addr.addr(), err.addr());
238	gbeauche	1.4	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, conn_id.value(), main_addr.value()));
239	cebix	1.1	if (res)
240			return NULL;
241	gbeauche	1.8	res = FindSymbol(conn_id.value(), sym.addr(), sym_addr.addr(), sym_class.addr());
242	gbeauche	1.4	D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, sym_addr.value(), sym_class.value()));
243	cebix	1.1	//!!?? CloseConnection(&conn_id);
244			if (res)
245			return NULL;
246			else
247	gbeauche	1.4	return (void *)sym_addr.value();
248	cebix	1.1	}
249			}
250
251
252			/*
253			* Find CallUniversalProc() TVector
254			*/
255
256			void InitCallUniversalProc()
257			{
258			cu_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc");
259			D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect));
260			if (cu_tvect == 0) {
261			printf("FATAL: Can't find CallUniversalProc()\n");
262			QuitEmulator();
263			}
264
265			gsl_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary");
266			D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect));
267			if (gsl_tvect == 0) {
268			printf("FATAL: Can't find GetSharedLibrary()\n");
269			QuitEmulator();
270			}
271
272			fs_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012FindSymbol");
273			D(bug("FindSymbol TVECT at %08lx\n", fs_tvect));
274			if (fs_tvect == 0) {
275			printf("FATAL: Can't find FindSymbol()\n");
276			QuitEmulator();
277			}
278
279			cc_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\017CloseConnection");
280			D(bug("CloseConnection TVECT at %08lx\n", cc_tvect));
281			if (cc_tvect == 0) {
282			printf("FATAL: Can't find CloseConnection()\n");
283			QuitEmulator();
284			}
285	gbeauche	1.7
286			nps_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\011NewPtrSys");
287			D(bug("NewPtrSys TVECT at %08lx\n", nps_tvect));
288			if (nps_tvect == 0) {
289			printf("FATAL: Can't find NewPtrSys()\n");
290			QuitEmulator();
291			}
292
293			d_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012DisposePtr");
294			D(bug("DisposePtr TVECT at %08lx\n", d_tvect));
295			if (d_tvect == 0) {
296			printf("FATAL: Can't find DisposePtr()\n");
297			QuitEmulator();
298			}
299	cebix	1.1	}
300
301
302			/*
303			* CallUniversalProc
304			*/
305
306			long CallUniversalProc(void *upp, uint32 info)
307			{
308			if (cu_tvect == 0) {
309			printf("FATAL: CallUniversalProc() called too early\n");
310			return 0;
311			}
312			return CallUniversal(upp, info);
313			}
314
315
316			/*
317			* Convert time_t value to MacOS time (seconds since 1.1.1904)
318			*/
319
320			uint32 TimeToMacTime(time_t t)
321			{
322			// This code is taken from glibc 2.2
323
324			// Convert to number of seconds elapsed since 1-Jan-1904
325			struct tm *local = localtime(&t);
326			const int TM_EPOCH_YEAR = 1900;
327			const int MAC_EPOCH_YEAR = 1904;
328			int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);
329			int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3);
330			int a100 = a4 / 25 - (a4 % 25 < 0);
331			int b100 = b4 / 25 - (b4 % 25 < 0);
332			int a400 = a100 >> 2;
333			int b400 = b100 >> 2;
334			int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
335			uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days;
336			return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days));
337			}
338	gbeauche	1.7
339
340			/*
341			* Memory allocators in MacOS system heap zone
342			*/
343
344			void *Mac_sysalloc(uint32 size)
345			{
346			return NewPtrSys(size);
347			}
348
349			void Mac_sysfree(void *p)
350			{
351			DisposePtr(p);
352			}