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(char *arg1, uint32 arg2, uint32 arg3, uint32 *arg4, void **arg5, char *arg6)
{
        return (int16)CallMacOS6(gsl_ptr, gsl_tvect, arg1, arg2, arg3, arg4, arg5, arg6);
}
typedef int16 (*fs_ptr)(uint32, char *, void **, uint32 *);
static uint32 fs_tvect = 0;
static inline int16 FindSymbol(uint32 arg1, char *arg2, void **arg3, uint32 *arg4)
{
        return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, arg2, arg3, 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);
}


/*
 *  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((uint32)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((uint32)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.value(), FOURCC('p','w','p','c'), 1, (uint32 *)conn_id.addr(), (void **)main_addr.addr(), (char *)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.value(), (void **)sym_addr.addr(), (uint32 *)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();
        }
}


/*
 *  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));
}
Revision:	1.6
Committed:	2004-01-12T15:37:18Z (20 years, 10 months ago) by cebix
Branch:	MAIN
Changes since 1.5:	+1 -1 lines
Log Message:	Happy New Year! :)
#	Content
1	/*
2	* macos_util.cpp - MacOS definitions/utility functions
3	*
4	* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include "sysdeps.h"
22	#include "cpu_emulation.h"
23	#include "main.h"
24	#include "sony.h"
25	#include "disk.h"
26	#include "cdrom.h"
27	#include "xlowmem.h"
28	#include "emul_op.h"
29	#include "macos_util.h"
30	#include "thunks.h"
31
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	static inline int16 GetSharedLibrary(char arg1, uint32 arg2, uint32 arg3, uint32 arg4, void *arg5, char arg6)
46	{
47	return (int16)CallMacOS6(gsl_ptr, gsl_tvect, arg1, arg2, arg3, arg4, arg5, arg6);
48	}
49	typedef int16 (fs_ptr)(uint32, char , void *, uint32 );
50	static uint32 fs_tvect = 0;
51	static inline int16 FindSymbol(uint32 arg1, char arg2, void arg3, uint32 arg4)
52	{
53	return (int16)CallMacOS4(fs_ptr, fs_tvect, arg1, arg2, arg3, arg4);
54	}
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
62
63	/*
64	* Reset MacOS utilities
65	*/
66
67	void MacOSUtilReset(void)
68	{
69	cu_tvect = 0;
70	gsl_tvect = 0;
71	fs_tvect = 0;
72	cc_tvect = 0;
73	}
74
75
76	/*
77	* Enqueue QElem to list
78	*/
79
80	void Enqueue(uint32 elem, uint32 list)
81	{
82	WriteMacInt32(elem + qLink, 0);
83	if (!ReadMacInt32(list + qTail)) {
84	WriteMacInt32(list + qHead, elem);
85	WriteMacInt32(list + qTail, elem);
86	} else {
87	WriteMacInt32(ReadMacInt32(list + qTail) + qLink, elem);
88	WriteMacInt32(list + qTail, elem);
89	}
90	}
91
92
93	/*
94	* Find first free drive number, starting at num
95	*/
96
97	static bool is_drive_number_free(int num)
98	{
99	uint32 e = ReadMacInt32(0x308 + qHead);
100	while (e) {
101	uint32 d = e - dsQLink;
102	if ((int)ReadMacInt16(d + dsQDrive) == num)
103	return false;
104	e = ReadMacInt32(e + qLink);
105	}
106	return true;
107	}
108
109	int FindFreeDriveNumber(int num)
110	{
111	while (!is_drive_number_free(num))
112	num++;
113	return num;
114	}
115
116
117	/*
118	* Mount volume with given file handle (call this function when you are unable to
119	* do automatic media change detection and the user has to press a special key
120	* or something to mount a volume; this function will check if there's really a
121	* volume in the drive with SysIsDiskInserted(); volumes which are present on startup
122	* are automatically mounted)
123	*/
124
125	void MountVolume(void *fh)
126	{
127	SonyMountVolume(fh) \|\| DiskMountVolume(fh) \|\| CDROMMountVolume(fh);
128	}
129
130
131	/*
132	* Calculate disk image file layout given file size and first 256 data bytes
133	*/
134
135	void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size)
136	{
137	if (size == 419284 \|\| size == 838484) {
138	// 400K/800K DiskCopy image, 84 byte header
139	start_byte = 84;
140	real_size = (size - 84) & ~0x1ff;
141	} else {
142	// 0..511 byte header
143	start_byte = size & 0x1ff;
144	real_size = size - start_byte;
145	}
146	}
147
148
149	/*
150	* Find symbol in shared library (using CFM)
151	* lib and sym must be Pascal strings!
152	*/
153
154	void FindLibSymbol(char lib_str, char *sym_str)
155	{
156	SheepVar32 conn_id = 0;
157	SheepVar32 main_addr = 0;
158	SheepArray<256> err;
159	WriteMacInt8(err.addr(), 0);
160	SheepVar32 sym_addr = 0;
161	SheepVar32 sym_class = 0;
162
163	SheepString lib(lib_str);
164	SheepString sym(sym_str);
165
166	D(bug("FindLibSymbol %s in %s...\n", sym.value()+1, lib.value()+1));
167
168	if (ReadMacInt32(XLM_RUN_MODE) == MODE_EMUL_OP) {
169	M68kRegisters r;
170
171	// Find shared library
172	static const uint16 proc1[] = {
173	PW(0x558f), // subq.l #2,a7
174	PW(0x2f08), // move.l a0,-(a7)
175	PW(0x2f3c), PW(0x7077), PW(0x7063), // move.l #'pwpc',-(a7)
176	PW(0x2f3c), PW(0x0000), PW(0x0001), // move.l #kReferenceCFrag,-(a7)
177	PW(0x2f09), // move.l a1,-(a7)
178	PW(0x2f0a), // move.l a2,-(a7)
179	PW(0x2f0b), // move.l a3,-(a7)
180	PW(0x3f3c), PW(0x0001), // (GetSharedLibrary)
181	PW(0xaa5a), // CFMDispatch
182	PW(0x301f), // move.w (a7)+,d0
183	PW(M68K_RTS)
184	};
185	r.a[0] = lib.addr();
186	r.a[1] = conn_id.addr();
187	r.a[2] = main_addr.addr();
188	r.a[3] = err.addr();
189	Execute68k((uint32)proc1, &r);
190	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", (int16)r.d[0], conn_id.value(), main_addr.value()));
191	if (r.d[0])
192	return NULL;
193
194	// Find symbol
195	static const uint16 proc2[] = {
196	PW(0x558f), // subq.l #2,a7
197	PW(0x2f00), // move.l d0,-(a7)
198	PW(0x2f08), // move.l a0,-(a7)
199	PW(0x2f09), // move.l a1,-(a7)
200	PW(0x2f0a), // move.l a2,-(a7)
201	PW(0x3f3c), PW(0x0005), // (FindSymbol)
202	PW(0xaa5a), // CFMDispatch
203	PW(0x301f), // move.w (a7)+,d0
204	PW(M68K_RTS)
205	};
206	r.d[0] = conn_id.value();
207	r.a[0] = sym.addr();
208	r.a[1] = sym_addr.addr();
209	r.a[2] = sym_class.addr();
210	Execute68k((uint32)proc2, &r);
211	D(bug(" FindSymbol1: ret %d, sym_addr %p, sym_class %ld\n", (int16)r.d[0], sym_addr.value(), sym_class.value()));
212	//!! CloseConnection()?
213	if (r.d[0])
214	return NULL;
215	else
216	return (void *)sym_addr.value();
217
218	} else {
219
220	if (GetSharedLibrary == NULL \|\| FindSymbol == NULL) {
221	printf("FATAL: FindLibSymbol() called too early\n");
222	return 0;
223	}
224	int16 res;
225	res = GetSharedLibrary(lib.value(), FOURCC('p','w','p','c'), 1, (uint32 )conn_id.addr(), (void )main_addr.addr(), (char )err.addr());
226	D(bug(" GetSharedLibrary: ret %d, connection ID %ld, main %p\n", res, conn_id.value(), main_addr.value()));
227	if (res)
228	return NULL;
229	res = FindSymbol(conn_id.value(), sym.value(), (void *)sym_addr.addr(), (uint32 )sym_class.addr());
230	D(bug(" FindSymbol: ret %d, sym_addr %p, sym_class %ld\n", res, sym_addr.value(), sym_class.value()));
231	//!!?? CloseConnection(&conn_id);
232	if (res)
233	return NULL;
234	else
235	return (void *)sym_addr.value();
236	}
237	}
238
239
240	/*
241	* Find CallUniversalProc() TVector
242	*/
243
244	void InitCallUniversalProc()
245	{
246	cu_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\021CallUniversalProc");
247	D(bug("CallUniversalProc TVECT at %08lx\n", cu_tvect));
248	if (cu_tvect == 0) {
249	printf("FATAL: Can't find CallUniversalProc()\n");
250	QuitEmulator();
251	}
252
253	gsl_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\020GetSharedLibrary");
254	D(bug("GetSharedLibrary TVECT at %08lx\n", gsl_tvect));
255	if (gsl_tvect == 0) {
256	printf("FATAL: Can't find GetSharedLibrary()\n");
257	QuitEmulator();
258	}
259
260	fs_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\012FindSymbol");
261	D(bug("FindSymbol TVECT at %08lx\n", fs_tvect));
262	if (fs_tvect == 0) {
263	printf("FATAL: Can't find FindSymbol()\n");
264	QuitEmulator();
265	}
266
267	cc_tvect = (uint32)FindLibSymbol("\014InterfaceLib", "\017CloseConnection");
268	D(bug("CloseConnection TVECT at %08lx\n", cc_tvect));
269	if (cc_tvect == 0) {
270	printf("FATAL: Can't find CloseConnection()\n");
271	QuitEmulator();
272	}
273	}
274
275
276	/*
277	* CallUniversalProc
278	*/
279
280	long CallUniversalProc(void *upp, uint32 info)
281	{
282	if (cu_tvect == 0) {
283	printf("FATAL: CallUniversalProc() called too early\n");
284	return 0;
285	}
286	return CallUniversal(upp, info);
287	}
288
289
290	/*
291	* Convert time_t value to MacOS time (seconds since 1.1.1904)
292	*/
293
294	uint32 TimeToMacTime(time_t t)
295	{
296	// This code is taken from glibc 2.2
297
298	// Convert to number of seconds elapsed since 1-Jan-1904
299	struct tm *local = localtime(&t);
300	const int TM_EPOCH_YEAR = 1900;
301	const int MAC_EPOCH_YEAR = 1904;
302	int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);
303	int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3);
304	int a100 = a4 / 25 - (a4 % 25 < 0);
305	int b100 = b4 / 25 - (b4 % 25 < 0);
306	int a400 = a100 >> 2;
307	int b400 = b100 >> 2;
308	int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
309	uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days;
310	return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days));
311	}