SheepShaver/src/thunks.cpp

/*
 *  thunks.cpp - Thunks to share data and code with MacOS
 *
 *  SheepShaver (C) 1997-2002 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 "thunks.h"
#include "emul_op.h"
#include "cpu_emulation.h"

// Native function declarations
#include "main.h"
#include "video.h"
#include "name_registry.h"
#include "serial.h"
#include "ether.h"
#include "macos_util.h"


/*              NativeOp instruction format:
                +------------+--------------------------+--+----------+------------+
                |      6     |                          |FN|    OP    |      2     |
                +------------+--------------------------+--+----------+------------+
                 0         5 |6                       19 20 21      25 26        31
*/

#define POWERPC_NATIVE_OP(LR, OP) \
                (POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)

/*
 *  Return the fake PowerPC opcode to handle specified native code
 */

#if EMULATED_PPC
uint32 NativeOpcode(int selector)
{
        uint32 opcode;
        switch (selector) {
        case NATIVE_DISABLE_INTERRUPT:
        case NATIVE_ENABLE_INTERRUPT:
                opcode = POWERPC_NATIVE_OP(0, selector);
                break;
        case NATIVE_PATCH_NAME_REGISTRY:
        case NATIVE_VIDEO_INSTALL_ACCEL:
        case NATIVE_VIDEO_VBL:
        case NATIVE_VIDEO_DO_DRIVER_IO:
        case NATIVE_ETHER_IRQ:
        case NATIVE_ETHER_INIT:
        case NATIVE_ETHER_TERM:
        case NATIVE_ETHER_OPEN:
        case NATIVE_ETHER_CLOSE:
        case NATIVE_ETHER_WPUT:
        case NATIVE_ETHER_RSRV:
        case NATIVE_SERIAL_NOTHING:
        case NATIVE_SERIAL_OPEN:
        case NATIVE_SERIAL_PRIME_IN:
        case NATIVE_SERIAL_PRIME_OUT:
        case NATIVE_SERIAL_CONTROL:
        case NATIVE_SERIAL_STATUS:
        case NATIVE_SERIAL_CLOSE:
        case NATIVE_GET_RESOURCE:
        case NATIVE_GET_1_RESOURCE:
        case NATIVE_GET_IND_RESOURCE:
        case NATIVE_GET_1_IND_RESOURCE:
        case NATIVE_R_GET_RESOURCE:
        case NATIVE_MAKE_EXECUTABLE:
                opcode = POWERPC_NATIVE_OP(1, selector);
                break;
        default:
                abort();
        }
        return opcode;
}
#endif


/*
 *  Initialize the thunks system
 */

struct native_op_t {
        uint32 tvect;
        uint32 func;
};
static native_op_t native_op[NATIVE_OP_MAX];

bool ThunksInit(void)
{
#if EMULATED_PPC
        for (int i = 0; i < NATIVE_OP_MAX; i++) {
                uintptr base = SheepMem::Reserve(12);
                WriteMacInt32(base + 0, base + 8);
                WriteMacInt32(base + 4, 0); // Fake TVECT
                WriteMacInt32(base + 8, NativeOpcode(i));
                native_op[i].tvect = base;
                native_op[i].func  = base + 8;
        }
#else
#if defined(__linux__)
#define DEFINE_NATIVE_OP(ID, FUNC) do {                         \
                uintptr base = SheepMem::Reserve(8);            \
                WriteMacInt32(base + 0, (uint32)FUNC);          \
                WriteMacInt32(base + 4, 0); /*Fake TVECT*/      \
                native_op[ID].tvect = base;                                     \
                native_op[ID].func  = (uint32)FUNC;                     \
        } while (0)
#elif defined(__BEOS__)
#define DEFINE_NATIVE_OP(ID, FUNC) do {                         \
                native_op[ID].tvect = FUNC;                                     \
                native_op[ID].func  = ((uint32 *)FUNC)[0];      \
        } while (0)
#else
#error "FIXME: define NativeOp for your platform"
#endif
        DEFINE_NATIVE_OP(NATIVE_PATCH_NAME_REGISTRY, DoPatchNameRegistry);
        DEFINE_NATIVE_OP(NATIVE_VIDEO_INSTALL_ACCEL, VideoInstallAccel);
        DEFINE_NATIVE_OP(NATIVE_VIDEO_VBL, VideoVBL);
        DEFINE_NATIVE_OP(NATIVE_VIDEO_DO_DRIVER_IO, VideoDoDriverIO);
        DEFINE_NATIVE_OP(NATIVE_ETHER_IRQ, EtherIRQ);
        DEFINE_NATIVE_OP(NATIVE_ETHER_INIT, InitStreamModule);
        DEFINE_NATIVE_OP(NATIVE_ETHER_TERM, TerminateStreamModule);
        DEFINE_NATIVE_OP(NATIVE_ETHER_OPEN, ether_open);
        DEFINE_NATIVE_OP(NATIVE_ETHER_CLOSE, ether_close);
        DEFINE_NATIVE_OP(NATIVE_ETHER_WPUT, ether_wput);
        DEFINE_NATIVE_OP(NATIVE_ETHER_RSRV, ether_rsrv);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_NOTHING, SerialNothing);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_OPEN, SerialOpen);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_IN, SerialPrimeIn);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_OUT, SerialPrimeOut);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_CONTROL, SerialControl);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_STATUS, SerialStatus);
        DEFINE_NATIVE_OP(NATIVE_SERIAL_CLOSE, SerialClose);
        DEFINE_NATIVE_OP(NATIVE_MAKE_EXECUTABLE, MakeExecutable);
#undef DEFINE_NATIVE_OP
#endif
        return true;
}


/*
 *  Return the native function descriptor (TVECT)
 */

uint32 NativeTVECT(int selector)
{
        assert(selector < NATIVE_OP_MAX);
        const uint32 tvect = native_op[selector].tvect;
        assert(tvect != 0);
        return tvect;
}


/*
 *  Return the native function address
 */

uint32 NativeFunction(int selector)
{
        assert(selector < NATIVE_OP_MAX);
        const uint32 func = native_op[selector].func;
        assert(func != 0);
        return func;
}


/*
 *  Execute native code from EMUL_OP routine (real mode switch)
 */

void ExecuteNative(int selector)
{
        SheepRoutineDescriptor desc(0, NativeTVECT(selector));
        M68kRegisters r;
        Execute68k(desc.addr(), &r);
}
Revision:	1.2
Committed:	2003-12-04T23:37:35Z (20 years, 11 months ago) by gbeauche
Branch:	MAIN
Changes since 1.1:	+45 -7 lines
Log Message:	Use a unique ExecuteNative() interface in any case, i.e. native & emulated
#	User	Rev	Content
1	gbeauche	1.1	/*
2			* thunks.cpp - Thunks to share data and code with MacOS
3			*
4			* SheepShaver (C) 1997-2002 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 "thunks.h"
23			#include "emul_op.h"
24			#include "cpu_emulation.h"
25
26			// Native function declarations
27			#include "main.h"
28			#include "video.h"
29			#include "name_registry.h"
30			#include "serial.h"
31			#include "ether.h"
32	gbeauche	1.2	#include "macos_util.h"
33	gbeauche	1.1
34
35			/* NativeOp instruction format:
36			+------------+--------------------------+--+----------+------------+
37			\| 6 \| \|FN\| OP \| 2 \|
38			+------------+--------------------------+--+----------+------------+
39			0 5 \|6 19 20 21 25 26 31
40			*/
41
42			#define POWERPC_NATIVE_OP(LR, OP) \
43			(POWERPC_EMUL_OP \| ((LR) << 11) \| (((uint32)OP) << 6) \| 2)
44
45	gbeauche	1.2	/*
46			* Return the fake PowerPC opcode to handle specified native code
47			*/
48
49	gbeauche	1.1	#if EMULATED_PPC
50			uint32 NativeOpcode(int selector)
51			{
52			uint32 opcode;
53			switch (selector) {
54			case NATIVE_DISABLE_INTERRUPT:
55			case NATIVE_ENABLE_INTERRUPT:
56			opcode = POWERPC_NATIVE_OP(0, selector);
57			break;
58			case NATIVE_PATCH_NAME_REGISTRY:
59			case NATIVE_VIDEO_INSTALL_ACCEL:
60			case NATIVE_VIDEO_VBL:
61			case NATIVE_VIDEO_DO_DRIVER_IO:
62			case NATIVE_ETHER_IRQ:
63			case NATIVE_ETHER_INIT:
64			case NATIVE_ETHER_TERM:
65			case NATIVE_ETHER_OPEN:
66			case NATIVE_ETHER_CLOSE:
67			case NATIVE_ETHER_WPUT:
68			case NATIVE_ETHER_RSRV:
69			case NATIVE_SERIAL_NOTHING:
70			case NATIVE_SERIAL_OPEN:
71			case NATIVE_SERIAL_PRIME_IN:
72			case NATIVE_SERIAL_PRIME_OUT:
73			case NATIVE_SERIAL_CONTROL:
74			case NATIVE_SERIAL_STATUS:
75			case NATIVE_SERIAL_CLOSE:
76			case NATIVE_GET_RESOURCE:
77			case NATIVE_GET_1_RESOURCE:
78			case NATIVE_GET_IND_RESOURCE:
79			case NATIVE_GET_1_IND_RESOURCE:
80			case NATIVE_R_GET_RESOURCE:
81			case NATIVE_MAKE_EXECUTABLE:
82			opcode = POWERPC_NATIVE_OP(1, selector);
83			break;
84			default:
85			abort();
86			}
87			return opcode;
88			}
89			#endif
90
91	gbeauche	1.2
92			/*
93			* Initialize the thunks system
94			*/
95
96	gbeauche	1.1	struct native_op_t {
97			uint32 tvect;
98			uint32 func;
99			};
100			static native_op_t native_op[NATIVE_OP_MAX];
101
102			bool ThunksInit(void)
103			{
104			#if EMULATED_PPC
105			for (int i = 0; i < NATIVE_OP_MAX; i++) {
106			uintptr base = SheepMem::Reserve(12);
107			WriteMacInt32(base + 0, base + 8);
108			WriteMacInt32(base + 4, 0); // Fake TVECT
109			WriteMacInt32(base + 8, NativeOpcode(i));
110			native_op[i].tvect = base;
111			native_op[i].func = base + 8;
112			}
113			#else
114			#if defined(__linux__)
115			#define DEFINE_NATIVE_OP(ID, FUNC) do { \
116			uintptr base = SheepMem::Reserve(8); \
117			WriteMacInt32(base + 0, (uint32)FUNC); \
118			WriteMacInt32(base + 4, 0); /Fake TVECT/ \
119			native_op[ID].tvect = base; \
120			native_op[ID].func = (uint32)FUNC; \
121			} while (0)
122			#elif defined(__BEOS__)
123			#define DEFINE_NATIVE_OP(ID, FUNC) do { \
124			native_op[ID].tvect = FUNC; \
125			native_op[ID].func = ((uint32 *)FUNC)[0]; \
126			} while (0)
127			#else
128			#error "FIXME: define NativeOp for your platform"
129			#endif
130	gbeauche	1.2	DEFINE_NATIVE_OP(NATIVE_PATCH_NAME_REGISTRY, DoPatchNameRegistry);
131			DEFINE_NATIVE_OP(NATIVE_VIDEO_INSTALL_ACCEL, VideoInstallAccel);
132			DEFINE_NATIVE_OP(NATIVE_VIDEO_VBL, VideoVBL);
133			DEFINE_NATIVE_OP(NATIVE_VIDEO_DO_DRIVER_IO, VideoDoDriverIO);
134			DEFINE_NATIVE_OP(NATIVE_ETHER_IRQ, EtherIRQ);
135			DEFINE_NATIVE_OP(NATIVE_ETHER_INIT, InitStreamModule);
136			DEFINE_NATIVE_OP(NATIVE_ETHER_TERM, TerminateStreamModule);
137			DEFINE_NATIVE_OP(NATIVE_ETHER_OPEN, ether_open);
138			DEFINE_NATIVE_OP(NATIVE_ETHER_CLOSE, ether_close);
139			DEFINE_NATIVE_OP(NATIVE_ETHER_WPUT, ether_wput);
140			DEFINE_NATIVE_OP(NATIVE_ETHER_RSRV, ether_rsrv);
141	gbeauche	1.1	DEFINE_NATIVE_OP(NATIVE_SERIAL_NOTHING, SerialNothing);
142			DEFINE_NATIVE_OP(NATIVE_SERIAL_OPEN, SerialOpen);
143			DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_IN, SerialPrimeIn);
144			DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_OUT, SerialPrimeOut);
145			DEFINE_NATIVE_OP(NATIVE_SERIAL_CONTROL, SerialControl);
146			DEFINE_NATIVE_OP(NATIVE_SERIAL_STATUS, SerialStatus);
147			DEFINE_NATIVE_OP(NATIVE_SERIAL_CLOSE, SerialClose);
148			DEFINE_NATIVE_OP(NATIVE_MAKE_EXECUTABLE, MakeExecutable);
149			#undef DEFINE_NATIVE_OP
150			#endif
151			return true;
152			}
153
154	gbeauche	1.2
155			/*
156			* Return the native function descriptor (TVECT)
157			*/
158
159	gbeauche	1.1	uint32 NativeTVECT(int selector)
160			{
161			assert(selector < NATIVE_OP_MAX);
162			const uint32 tvect = native_op[selector].tvect;
163			assert(tvect != 0);
164	gbeauche	1.2	return tvect;
165	gbeauche	1.1	}
166
167	gbeauche	1.2
168			/*
169			* Return the native function address
170			*/
171
172	gbeauche	1.1	uint32 NativeFunction(int selector)
173			{
174			assert(selector < NATIVE_OP_MAX);
175			const uint32 func = native_op[selector].func;
176			assert(func != 0);
177	gbeauche	1.2	return func;
178			}
179
180
181			/*
182			* Execute native code from EMUL_OP routine (real mode switch)
183			*/
184
185			void ExecuteNative(int selector)
186			{
187			SheepRoutineDescriptor desc(0, NativeTVECT(selector));
188			M68kRegisters r;
189			Execute68k(desc.addr(), &r);
190	gbeauche	1.1	}