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"
#include "xlowmem.h"

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

// Generate PowerPC thunks for GetResource() replacements?
#define POWERPC_GET_RESOURCE_THUNKS 1


/*              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:
        case NATIVE_CHECK_LOAD_INVOC:
                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


/*
 *  Generate PowerPC thunks for GetResource() replacements
 */

#if EMULATED_PPC
static uint32 get_resource_func;
static uint32 get_1_resource_func;
static uint32 get_ind_resource_func;
static uint32 get_1_ind_resource_func;
static uint32 r_get_resource_func;

static void generate_powerpc_thunks(void)
{
        static uint32 get_resource_template[] = {
                PL(0x7c0802a6),         // mflr    r0
                PL(0x90010008),         // stw     r0,8(r1)
                PL(0x9421ffbc),         // stwu    r1,-68(r1)
                PL(0x90610038),         // stw     r3,56(r1)
                PL(0x9081003c),         // stw     r4,60(r1)
                PL(0x00000000),         // lwz     r0,XLM_GET_RESOURCE(r0)
                PL(0x80402834),         // lwz     r2,XLM_RES_LIB_TOC(r0)
                PL(0x7c0903a6),         // mtctr   r0
                PL(0x4e800421),         // bctrl
                PL(0x90610040),         // stw     r3,64(r1)
                PL(0x80610038),         // lwz     r3,56(r1)
                PL(0xa881003e),         // lha     r4,62(r1)
                PL(0x80a10040),         // lwz     r5,64(r1)
                PL(0x00000001),         // <check_load_invoc>
                PL(0x80610040),         // lwz     r3,64(r1)
                PL(0x8001004c),         // lwz     r0,76(r1)
                PL(0x7c0803a6),         // mtlr    r0
                PL(0x38210044),         // addi    r1,r1,68
                PL(0x4e800020)          // blr
        };
        const uint32 get_resource_template_size = sizeof(get_resource_template);

        int xlm_index = -1, check_load_invoc_index = -1;
        for (int i = 0; i < get_resource_template_size/4; i++) {
                uint32 opcode = ntohl(get_resource_template[i]);
                switch (opcode) {
                case 0x00000000:
                        xlm_index = i;
                        break;
                case 0x00000001:
                        check_load_invoc_index = i;
                        break;
                }
        }
        assert(xlm_index != -1 && check_load_invoc_index != -1);

        uint32 check_load_invoc_opcode = NativeOpcode(NATIVE_CHECK_LOAD_INVOC);
        uintptr base;

        // GetResource()
        get_resource_func = base = SheepMem::Reserve(get_resource_template_size);
        Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
        WriteMacInt32(base + xlm_index * 4, 0x80000000 | XLM_GET_RESOURCE);
        WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);

        // Get1Resource()
        get_1_resource_func = base = SheepMem::Reserve(get_resource_template_size);
        Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
        WriteMacInt32(base + xlm_index * 4, 0x80000000 | XLM_GET_1_RESOURCE);
        WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);

        // GetIndResource()
        get_ind_resource_func = base = SheepMem::Reserve(get_resource_template_size);
        Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
        WriteMacInt32(base + xlm_index * 4, 0x80000000 | XLM_GET_IND_RESOURCE);
        WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);

        // Get1IndResource()
        get_1_ind_resource_func = base = SheepMem::Reserve(get_resource_template_size);
        Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
        WriteMacInt32(base + xlm_index * 4, 0x80000000 | XLM_GET_1_IND_RESOURCE);
        WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);

        // RGetResource()
        r_get_resource_func = base = SheepMem::Reserve(get_resource_template_size);
        Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
        WriteMacInt32(base + xlm_index * 4, 0x80000000 | XLM_R_GET_RESOURCE);
        WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
}
#endif


/*
 *  Initialize the thunks system
 */

struct native_op_t {
        uint32 tvect;
        uint32 func;
        SheepRoutineDescriptor *desc;
};
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;
        }
#if POWERPC_GET_RESOURCE_THUNKS
        generate_powerpc_thunks();
        native_op[NATIVE_GET_RESOURCE].func = get_resource_func;
        native_op[NATIVE_GET_1_RESOURCE].func = get_1_resource_func;
        native_op[NATIVE_GET_IND_RESOURCE].func = get_ind_resource_func;
        native_op[NATIVE_GET_1_IND_RESOURCE].func = get_1_ind_resource_func;
        native_op[NATIVE_R_GET_RESOURCE].func = r_get_resource_func;
#endif
#else
#if defined(__linux__) || (defined(__APPLE__) && defined(__MACH__))
#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
        // FIXME: add GetResource() and friends for completeness
        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

        // Initialize routine descriptors (if TVECT exists)
        for (int i = 0; i < NATIVE_OP_MAX; i++) {
                uint32 tvect = native_op[i].tvect;
                if (tvect)
                        native_op[i].desc = new SheepRoutineDescriptor(0, tvect);
        }

        return true;
}


/*
 *  Delete generated thunks
 */

void ThunksExit(void)
{
        for (int i = 0; i < NATIVE_OP_MAX; i++) {
                SheepRoutineDescriptor *desc = native_op[i].desc;
                if (desc)
                        delete desc;
        }
}


/*
 *  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;
}


/*
 *  Return the routine descriptor address of the native function
 */

uint32 NativeRoutineDescriptor(int selector)
{
        assert(selector < NATIVE_OP_MAX);
        SheepRoutineDescriptor * const desc = native_op[selector].desc;
        assert(desc != 0);
        return desc->addr();
}


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

void ExecuteNative(int selector)
{
        M68kRegisters r;
        Execute68k(NativeRoutineDescriptor(selector), &r);
}
Revision:	1.6
Committed:	2004-01-24T11:28:04Z (20 years, 10 months ago) by gbeauche
Branch:	MAIN
Changes since 1.5:	+99 -0 lines
Log Message:	Generate PowerPC code wrapping GetResource() replacements. That way, it's a normal PPC function invocation that can be JIT compiled to native code instead of nesting execute() calls which may lead to use the interpreter (this took around 11% of total execution time on boot, downto 3%). Also, optimize some SheepShaver EmulOps and actually report non-CTI.
#	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	gbeauche	1.6	#include "xlowmem.h"
26	gbeauche	1.1
27			// Native function declarations
28			#include "main.h"
29			#include "video.h"
30			#include "name_registry.h"
31			#include "serial.h"
32			#include "ether.h"
33	gbeauche	1.2	#include "macos_util.h"
34	gbeauche	1.1
35	gbeauche	1.6	// Generate PowerPC thunks for GetResource() replacements?
36			#define POWERPC_GET_RESOURCE_THUNKS 1
37
38	gbeauche	1.1
39			/* NativeOp instruction format:
40			+------------+--------------------------+--+----------+------------+
41			\| 6 \| \|FN\| OP \| 2 \|
42			+------------+--------------------------+--+----------+------------+
43			0 5 \|6 19 20 21 25 26 31
44			*/
45
46			#define POWERPC_NATIVE_OP(LR, OP) \
47			(POWERPC_EMUL_OP \| ((LR) << 11) \| (((uint32)OP) << 6) \| 2)
48
49	gbeauche	1.2	/*
50			* Return the fake PowerPC opcode to handle specified native code
51			*/
52
53	gbeauche	1.1	#if EMULATED_PPC
54			uint32 NativeOpcode(int selector)
55			{
56			uint32 opcode;
57			switch (selector) {
58			case NATIVE_DISABLE_INTERRUPT:
59			case NATIVE_ENABLE_INTERRUPT:
60	gbeauche	1.6	case NATIVE_CHECK_LOAD_INVOC:
61	gbeauche	1.1	opcode = POWERPC_NATIVE_OP(0, selector);
62			break;
63			case NATIVE_PATCH_NAME_REGISTRY:
64			case NATIVE_VIDEO_INSTALL_ACCEL:
65			case NATIVE_VIDEO_VBL:
66			case NATIVE_VIDEO_DO_DRIVER_IO:
67			case NATIVE_ETHER_IRQ:
68			case NATIVE_ETHER_INIT:
69			case NATIVE_ETHER_TERM:
70			case NATIVE_ETHER_OPEN:
71			case NATIVE_ETHER_CLOSE:
72			case NATIVE_ETHER_WPUT:
73			case NATIVE_ETHER_RSRV:
74			case NATIVE_SERIAL_NOTHING:
75			case NATIVE_SERIAL_OPEN:
76			case NATIVE_SERIAL_PRIME_IN:
77			case NATIVE_SERIAL_PRIME_OUT:
78			case NATIVE_SERIAL_CONTROL:
79			case NATIVE_SERIAL_STATUS:
80			case NATIVE_SERIAL_CLOSE:
81			case NATIVE_GET_RESOURCE:
82			case NATIVE_GET_1_RESOURCE:
83			case NATIVE_GET_IND_RESOURCE:
84			case NATIVE_GET_1_IND_RESOURCE:
85			case NATIVE_R_GET_RESOURCE:
86			case NATIVE_MAKE_EXECUTABLE:
87			opcode = POWERPC_NATIVE_OP(1, selector);
88			break;
89			default:
90			abort();
91			}
92			return opcode;
93			}
94			#endif
95
96	gbeauche	1.2
97			/*
98	gbeauche	1.6	* Generate PowerPC thunks for GetResource() replacements
99			*/
100
101			#if EMULATED_PPC
102			static uint32 get_resource_func;
103			static uint32 get_1_resource_func;
104			static uint32 get_ind_resource_func;
105			static uint32 get_1_ind_resource_func;
106			static uint32 r_get_resource_func;
107
108			static void generate_powerpc_thunks(void)
109			{
110			static uint32 get_resource_template[] = {
111			PL(0x7c0802a6), // mflr r0
112			PL(0x90010008), // stw r0,8(r1)
113			PL(0x9421ffbc), // stwu r1,-68(r1)
114			PL(0x90610038), // stw r3,56(r1)
115			PL(0x9081003c), // stw r4,60(r1)
116			PL(0x00000000), // lwz r0,XLM_GET_RESOURCE(r0)
117			PL(0x80402834), // lwz r2,XLM_RES_LIB_TOC(r0)
118			PL(0x7c0903a6), // mtctr r0
119			PL(0x4e800421), // bctrl
120			PL(0x90610040), // stw r3,64(r1)
121			PL(0x80610038), // lwz r3,56(r1)
122			PL(0xa881003e), // lha r4,62(r1)
123			PL(0x80a10040), // lwz r5,64(r1)
124			PL(0x00000001), // <check_load_invoc>
125			PL(0x80610040), // lwz r3,64(r1)
126			PL(0x8001004c), // lwz r0,76(r1)
127			PL(0x7c0803a6), // mtlr r0
128			PL(0x38210044), // addi r1,r1,68
129			PL(0x4e800020) // blr
130			};
131			const uint32 get_resource_template_size = sizeof(get_resource_template);
132
133			int xlm_index = -1, check_load_invoc_index = -1;
134			for (int i = 0; i < get_resource_template_size/4; i++) {
135			uint32 opcode = ntohl(get_resource_template[i]);
136			switch (opcode) {
137			case 0x00000000:
138			xlm_index = i;
139			break;
140			case 0x00000001:
141			check_load_invoc_index = i;
142			break;
143			}
144			}
145			assert(xlm_index != -1 && check_load_invoc_index != -1);
146
147			uint32 check_load_invoc_opcode = NativeOpcode(NATIVE_CHECK_LOAD_INVOC);
148			uintptr base;
149
150			// GetResource()
151			get_resource_func = base = SheepMem::Reserve(get_resource_template_size);
152			Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
153			WriteMacInt32(base + xlm_index * 4, 0x80000000 \| XLM_GET_RESOURCE);
154			WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
155
156			// Get1Resource()
157			get_1_resource_func = base = SheepMem::Reserve(get_resource_template_size);
158			Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
159			WriteMacInt32(base + xlm_index * 4, 0x80000000 \| XLM_GET_1_RESOURCE);
160			WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
161
162			// GetIndResource()
163			get_ind_resource_func = base = SheepMem::Reserve(get_resource_template_size);
164			Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
165			WriteMacInt32(base + xlm_index * 4, 0x80000000 \| XLM_GET_IND_RESOURCE);
166			WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
167
168			// Get1IndResource()
169			get_1_ind_resource_func = base = SheepMem::Reserve(get_resource_template_size);
170			Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
171			WriteMacInt32(base + xlm_index * 4, 0x80000000 \| XLM_GET_1_IND_RESOURCE);
172			WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
173
174			// RGetResource()
175			r_get_resource_func = base = SheepMem::Reserve(get_resource_template_size);
176			Host2Mac_memcpy(base, get_resource_template, get_resource_template_size);
177			WriteMacInt32(base + xlm_index * 4, 0x80000000 \| XLM_R_GET_RESOURCE);
178			WriteMacInt32(base + check_load_invoc_index * 4, check_load_invoc_opcode);
179			}
180			#endif
181
182
183			/*
184	gbeauche	1.2	* Initialize the thunks system
185			*/
186
187	gbeauche	1.1	struct native_op_t {
188			uint32 tvect;
189			uint32 func;
190	gbeauche	1.3	SheepRoutineDescriptor *desc;
191	gbeauche	1.1	};
192			static native_op_t native_op[NATIVE_OP_MAX];
193
194			bool ThunksInit(void)
195			{
196			#if EMULATED_PPC
197			for (int i = 0; i < NATIVE_OP_MAX; i++) {
198			uintptr base = SheepMem::Reserve(12);
199			WriteMacInt32(base + 0, base + 8);
200			WriteMacInt32(base + 4, 0); // Fake TVECT
201			WriteMacInt32(base + 8, NativeOpcode(i));
202			native_op[i].tvect = base;
203			native_op[i].func = base + 8;
204			}
205	gbeauche	1.6	#if POWERPC_GET_RESOURCE_THUNKS
206			generate_powerpc_thunks();
207			native_op[NATIVE_GET_RESOURCE].func = get_resource_func;
208			native_op[NATIVE_GET_1_RESOURCE].func = get_1_resource_func;
209			native_op[NATIVE_GET_IND_RESOURCE].func = get_ind_resource_func;
210			native_op[NATIVE_GET_1_IND_RESOURCE].func = get_1_ind_resource_func;
211			native_op[NATIVE_R_GET_RESOURCE].func = r_get_resource_func;
212			#endif
213	gbeauche	1.1	#else
214	gbeauche	1.5	#if defined(__linux__) \|\| (defined(__APPLE__) && defined(__MACH__))
215	gbeauche	1.1	#define DEFINE_NATIVE_OP(ID, FUNC) do { \
216			uintptr base = SheepMem::Reserve(8); \
217			WriteMacInt32(base + 0, (uint32)FUNC); \
218			WriteMacInt32(base + 4, 0); /Fake TVECT/ \
219			native_op[ID].tvect = base; \
220			native_op[ID].func = (uint32)FUNC; \
221			} while (0)
222			#elif defined(__BEOS__)
223			#define DEFINE_NATIVE_OP(ID, FUNC) do { \
224			native_op[ID].tvect = FUNC; \
225			native_op[ID].func = ((uint32 *)FUNC)[0]; \
226			} while (0)
227			#else
228			#error "FIXME: define NativeOp for your platform"
229			#endif
230	gbeauche	1.4	// FIXME: add GetResource() and friends for completeness
231	gbeauche	1.2	DEFINE_NATIVE_OP(NATIVE_PATCH_NAME_REGISTRY, DoPatchNameRegistry);
232			DEFINE_NATIVE_OP(NATIVE_VIDEO_INSTALL_ACCEL, VideoInstallAccel);
233			DEFINE_NATIVE_OP(NATIVE_VIDEO_VBL, VideoVBL);
234			DEFINE_NATIVE_OP(NATIVE_VIDEO_DO_DRIVER_IO, VideoDoDriverIO);
235			DEFINE_NATIVE_OP(NATIVE_ETHER_IRQ, EtherIRQ);
236			DEFINE_NATIVE_OP(NATIVE_ETHER_INIT, InitStreamModule);
237			DEFINE_NATIVE_OP(NATIVE_ETHER_TERM, TerminateStreamModule);
238			DEFINE_NATIVE_OP(NATIVE_ETHER_OPEN, ether_open);
239			DEFINE_NATIVE_OP(NATIVE_ETHER_CLOSE, ether_close);
240			DEFINE_NATIVE_OP(NATIVE_ETHER_WPUT, ether_wput);
241			DEFINE_NATIVE_OP(NATIVE_ETHER_RSRV, ether_rsrv);
242	gbeauche	1.1	DEFINE_NATIVE_OP(NATIVE_SERIAL_NOTHING, SerialNothing);
243			DEFINE_NATIVE_OP(NATIVE_SERIAL_OPEN, SerialOpen);
244			DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_IN, SerialPrimeIn);
245			DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_OUT, SerialPrimeOut);
246			DEFINE_NATIVE_OP(NATIVE_SERIAL_CONTROL, SerialControl);
247			DEFINE_NATIVE_OP(NATIVE_SERIAL_STATUS, SerialStatus);
248			DEFINE_NATIVE_OP(NATIVE_SERIAL_CLOSE, SerialClose);
249			DEFINE_NATIVE_OP(NATIVE_MAKE_EXECUTABLE, MakeExecutable);
250			#undef DEFINE_NATIVE_OP
251			#endif
252	gbeauche	1.3
253	gbeauche	1.4	// Initialize routine descriptors (if TVECT exists)
254			for (int i = 0; i < NATIVE_OP_MAX; i++) {
255			uint32 tvect = native_op[i].tvect;
256			if (tvect)
257			native_op[i].desc = new SheepRoutineDescriptor(0, tvect);
258			}
259	gbeauche	1.3
260	gbeauche	1.1	return true;
261			}
262
263	gbeauche	1.2
264			/*
265	gbeauche	1.3	* Delete generated thunks
266			*/
267
268			void ThunksExit(void)
269			{
270			for (int i = 0; i < NATIVE_OP_MAX; i++) {
271			SheepRoutineDescriptor *desc = native_op[i].desc;
272			if (desc)
273			delete desc;
274			}
275			}
276
277
278			/*
279	gbeauche	1.2	* Return the native function descriptor (TVECT)
280			*/
281
282	gbeauche	1.1	uint32 NativeTVECT(int selector)
283			{
284			assert(selector < NATIVE_OP_MAX);
285			const uint32 tvect = native_op[selector].tvect;
286			assert(tvect != 0);
287	gbeauche	1.2	return tvect;
288	gbeauche	1.1	}
289
290	gbeauche	1.2
291			/*
292			* Return the native function address
293			*/
294
295	gbeauche	1.1	uint32 NativeFunction(int selector)
296			{
297			assert(selector < NATIVE_OP_MAX);
298			const uint32 func = native_op[selector].func;
299			assert(func != 0);
300	gbeauche	1.2	return func;
301			}
302
303
304			/*
305	gbeauche	1.3	* Return the routine descriptor address of the native function
306			*/
307
308			uint32 NativeRoutineDescriptor(int selector)
309			{
310			assert(selector < NATIVE_OP_MAX);
311			SheepRoutineDescriptor * const desc = native_op[selector].desc;
312			assert(desc != 0);
313			return desc->addr();
314			}
315
316
317			/*
318	gbeauche	1.2	* Execute native code from EMUL_OP routine (real mode switch)
319			*/
320
321			void ExecuteNative(int selector)
322			{
323			M68kRegisters r;
324	gbeauche	1.3	Execute68k(NativeRoutineDescriptor(selector), &r);
325	gbeauche	1.1	}