SheepShaver/src/macos_util.cpp

/*
 *  macos_util.cpp - MacOS definitions/utility functions
 *
 *  SheepShaver (C) 1997-2005 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 uint32 (*nps_ptr)(uint32);
static uint32 nps_tvect = 0;
static inline uint32 NewPtrSys(uint32 arg1)
{
        return CallMacOS1(nps_ptr, nps_tvect, arg1);
}
typedef void (*d_ptr)(uint32);
static uint32 d_tvect = 0;
static inline void DisposePtr(uint32 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!
 */

uint32 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 uint8 proc1_template[] = {
                        0x55, 0x8f,                                                     // subq.l       #2,a7
                        0x2f, 0x08,                                                     // move.l       a0,-(a7)
                        0x2f, 0x3c, 0x70, 0x77, 0x70, 0x63,     // move.l       #'pwpc',-(a7)
                        0x2f, 0x3c, 0x00, 0x00, 0x00, 0x01,     // move.l       #kReferenceCFrag,-(a7)
                        0x2f, 0x09,                                                     // move.l       a1,-(a7)
                        0x2f, 0x0a,                                                     // move.l       a2,-(a7)
                        0x2f, 0x0b,                                                     // move.l       a3,-(a7)
                        0x3f, 0x3c, 0x00, 0x01,                         // (GetSharedLibrary)
                        0xaa, 0x5a,                                                     // CFMDispatch
                        0x30, 0x1f,                                                     // move.w       (a7)+,d0
                        M68K_RTS >> 8, M68K_RTS
                };
                BUILD_SHEEPSHAVER_PROCEDURE(proc1);
                r.a[0] = lib.addr();
                r.a[1] = conn_id.addr();
                r.a[2] = main_addr.addr();
                r.a[3] = err.addr();
                Execute68k(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 0;
        
                // Find symbol
                static const uint8 proc2_template[] = {
                        0x55, 0x8f,                                     // subq.l       #2,a7
                        0x2f, 0x00,                                     // move.l       d0,-(a7)
                        0x2f, 0x08,                                     // move.l       a0,-(a7)
                        0x2f, 0x09,                                     // move.l       a1,-(a7)
                        0x2f, 0x0a,                                     // move.l       a2,-(a7)
                        0x3f, 0x3c, 0x00, 0x05,         // (FindSymbol)
                        0xaa, 0x5a,                                     // CFMDispatch
                        0x30, 0x1f,                                     // move.w       (a7)+,d0
                        M68K_RTS >> 8, M68K_RTS
                };
                BUILD_SHEEPSHAVER_PROCEDURE(proc2);
                r.d[0] = conn_id.value();
                r.a[0] = sym.addr();
                r.a[1] = sym_addr.addr();
                r.a[2] = sym_class.addr();
                Execute68k(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 0;
                else
                        return 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 0;
                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 0;
                else
                        return sym_addr.value();
        }
}


/*
 *  Find CallUniversalProc() TVector
 */

void InitCallUniversalProc()
{
        cu_tvect = 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 = 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 = 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 = 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 = 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 = 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
 */

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

void Mac_sysfree(uint32 addr)
{
        DisposePtr(addr);
}
Revision:	1.11
Committed:	2005-01-30T21:48:19Z (19 years, 9 months ago) by gbeauche
Branch:	MAIN
Changes since 1.10:	+1 -1 lines
Log Message:	Happy New Year 2005!
#	User	Rev	Content
1	cebix	1.1	/*
2			* macos_util.cpp - MacOS definitions/utility functions
3			*
4	gbeauche	1.11	* SheepShaver (C) 1997-2005 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	1.10	typedef uint32 (*nps_ptr)(uint32);
62	gbeauche	1.7	static uint32 nps_tvect = 0;
63	gbeauche	1.10	static inline uint32 NewPtrSys(uint32 arg1)
64	gbeauche	1.7	{
65	gbeauche	1.10	return CallMacOS1(nps_ptr, nps_tvect, arg1);
66	gbeauche	1.7	}
67	gbeauche	1.10	typedef void (*d_ptr)(uint32);
68	gbeauche	1.7	static uint32 d_tvect = 0;
69	gbeauche	1.10	static inline void DisposePtr(uint32 arg1)
70	gbeauche	1.7	{
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	1.10	uint32 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	1.9	static const uint8 proc1_template[] = {
185			0x55, 0x8f, // subq.l #2,a7
186			0x2f, 0x08, // move.l a0,-(a7)
187			0x2f, 0x3c, 0x70, 0x77, 0x70, 0x63, // move.l #'pwpc',-(a7)
188			0x2f, 0x3c, 0x00, 0x00, 0x00, 0x01, // move.l #kReferenceCFrag,-(a7)
189			0x2f, 0x09, // move.l a1,-(a7)
190			0x2f, 0x0a, // move.l a2,-(a7)
191			0x2f, 0x0b, // move.l a3,-(a7)
192			0x3f, 0x3c, 0x00, 0x01, // (GetSharedLibrary)
193			0xaa, 0x5a, // CFMDispatch
194			0x30, 0x1f, // move.w (a7)+,d0
195			M68K_RTS >> 8, M68K_RTS
196	cebix	1.1	};
197	gbeauche	1.9	BUILD_SHEEPSHAVER_PROCEDURE(proc1);
198	gbeauche	1.4	r.a[0] = lib.addr();
199			r.a[1] = conn_id.addr();
200			r.a[2] = main_addr.addr();
201			r.a[3] = err.addr();
202	gbeauche	1.9	Execute68k(proc1, &r);
203	gbeauche	1.4	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], conn_id.value(), main_addr.value()));
204	cebix	1.1	if (r.d[0])
205	gbeauche	1.10	return 0;
206	cebix	1.1
207			// Find symbol
208	gbeauche	1.9	static const uint8 proc2_template[] = {
209			0x55, 0x8f, // subq.l #2,a7
210			0x2f, 0x00, // move.l d0,-(a7)
211			0x2f, 0x08, // move.l a0,-(a7)
212			0x2f, 0x09, // move.l a1,-(a7)
213			0x2f, 0x0a, // move.l a2,-(a7)
214			0x3f, 0x3c, 0x00, 0x05, // (FindSymbol)
215			0xaa, 0x5a, // CFMDispatch
216			0x30, 0x1f, // move.w (a7)+,d0
217			M68K_RTS >> 8, M68K_RTS
218	cebix	1.1	};
219	gbeauche	1.9	BUILD_SHEEPSHAVER_PROCEDURE(proc2);
220	gbeauche	1.4	r.d[0] = conn_id.value();
221			r.a[0] = sym.addr();
222			r.a[1] = sym_addr.addr();
223			r.a[2] = sym_class.addr();
224	gbeauche	1.9	Execute68k(proc2, &r);
225	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()));
226	cebix	1.1	//!! CloseConnection()?
227			if (r.d[0])
228	gbeauche	1.10	return 0;
229	cebix	1.1	else
230	gbeauche	1.10	return sym_addr.value();
231	cebix	1.1
232			} else {
233
234			if (GetSharedLibrary == NULL \|\| FindSymbol == NULL) {
235			printf("FATAL: FindLibSymbol() called too early\n");
236			return 0;
237			}
238			int16 res;
239	gbeauche	1.8	res = GetSharedLibrary(lib.addr(), FOURCC('p','w','p','c'), 1, conn_id.addr(), main_addr.addr(), err.addr());
240	gbeauche	1.4	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, conn_id.value(), main_addr.value()));
241	cebix	1.1	if (res)
242	gbeauche	1.10	return 0;
243	gbeauche	1.8	res = FindSymbol(conn_id.value(), sym.addr(), sym_addr.addr(), sym_class.addr());
244	gbeauche	1.4	D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, sym_addr.value(), sym_class.value()));
245	cebix	1.1	//!!?? CloseConnection(&conn_id);
246			if (res)
247	gbeauche	1.10	return 0;
248	cebix	1.1	else
249	gbeauche	1.10	return sym_addr.value();
250	cebix	1.1	}
251			}
252
253
254			/*
255			* Find CallUniversalProc() TVector
256			*/
257
258			void InitCallUniversalProc()
259			{
260	gbeauche	1.10	cu_tvect = FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc");
261	cebix	1.1	D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect));
262			if (cu_tvect == 0) {
263			printf("FATAL: Can't find CallUniversalProc()\n");
264			QuitEmulator();
265			}
266
267	gbeauche	1.10	gsl_tvect = FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary");
268	cebix	1.1	D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect));
269			if (gsl_tvect == 0) {
270			printf("FATAL: Can't find GetSharedLibrary()\n");
271			QuitEmulator();
272			}
273
274	gbeauche	1.10	fs_tvect = FindLibSymbol("\014InterfaceLib", "\012FindSymbol");
275	cebix	1.1	D(bug("FindSymbol TVECT at %08lx\n", fs_tvect));
276			if (fs_tvect == 0) {
277			printf("FATAL: Can't find FindSymbol()\n");
278			QuitEmulator();
279			}
280
281	gbeauche	1.10	cc_tvect = FindLibSymbol("\014InterfaceLib", "\017CloseConnection");
282	cebix	1.1	D(bug("CloseConnection TVECT at %08lx\n", cc_tvect));
283			if (cc_tvect == 0) {
284			printf("FATAL: Can't find CloseConnection()\n");
285			QuitEmulator();
286			}
287	gbeauche	1.7
288	gbeauche	1.10	nps_tvect = FindLibSymbol("\014InterfaceLib", "\011NewPtrSys");
289	gbeauche	1.7	D(bug("NewPtrSys TVECT at %08lx\n", nps_tvect));
290			if (nps_tvect == 0) {
291			printf("FATAL: Can't find NewPtrSys()\n");
292			QuitEmulator();
293			}
294
295	gbeauche	1.10	d_tvect = FindLibSymbol("\014InterfaceLib", "\012DisposePtr");
296	gbeauche	1.7	D(bug("DisposePtr TVECT at %08lx\n", d_tvect));
297			if (d_tvect == 0) {
298			printf("FATAL: Can't find DisposePtr()\n");
299			QuitEmulator();
300			}
301	cebix	1.1	}
302
303
304			/*
305			* CallUniversalProc
306			*/
307
308			long CallUniversalProc(void *upp, uint32 info)
309			{
310			if (cu_tvect == 0) {
311			printf("FATAL: CallUniversalProc() called too early\n");
312			return 0;
313			}
314			return CallUniversal(upp, info);
315			}
316
317
318			/*
319			* Convert time_t value to MacOS time (seconds since 1.1.1904)
320			*/
321
322			uint32 TimeToMacTime(time_t t)
323			{
324			// This code is taken from glibc 2.2
325
326			// Convert to number of seconds elapsed since 1-Jan-1904
327			struct tm *local = localtime(&t);
328			const int TM_EPOCH_YEAR = 1900;
329			const int MAC_EPOCH_YEAR = 1904;
330			int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);
331			int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3);
332			int a100 = a4 / 25 - (a4 % 25 < 0);
333			int b100 = b4 / 25 - (b4 % 25 < 0);
334			int a400 = a100 >> 2;
335			int b400 = b100 >> 2;
336			int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
337			uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days;
338			return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days));
339			}
340	gbeauche	1.7
341
342			/*
343			* Memory allocators in MacOS system heap zone
344			*/
345
346	gbeauche	1.10	uint32 Mac_sysalloc(uint32 size)
347	gbeauche	1.7	{
348			return NewPtrSys(size);
349			}
350
351	gbeauche	1.10	void Mac_sysfree(uint32 addr)
352	gbeauche	1.7	{
353	gbeauche	1.10	DisposePtr(addr);
354	gbeauche	1.7	}