src/include/xlowmem.h

/*
 *  xlowmem.h - Definitions for extra Low Memory globals (0x2800..)
 *
 *  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
 */

#ifndef XLOWMEM_H
#define XLOWMEM_H

// Modes for XLM_RUN_MODE
#define MODE_68K 0              // 68k emulator active
#define MODE_NATIVE 1   // Switched to native mode
#define MODE_EMUL_OP 2  // 68k emulator active, within EMUL_OP routine

#define XLM_SIGNATURE 0x2800                    // SheepShaver signature
#define XLM_KERNEL_DATA 0x2804                  // Pointer to Kernel Data
#define XLM_TOC 0x2808                                  // TOC pointer of emulator
#define XLM_SHEEP_OBJ 0x280c                    // Pointer to SheepShaver object
#define XLM_RUN_MODE 0x2810                             // Current run mode, see enum above
#define XLM_68K_R25 0x2814                              // Contents of the 68k emulator's r25 (which contains the interrupt level), saved upon entering EMUL_OP mode, used by Execute68k() and the USR1 signal handler
#define XLM_IRQ_NEST 0x2818                             // Interrupt disable nesting counter (>0: disabled)
#define XLM_PVR 0x281c                                  // Theoretical PVR
#define XLM_BUS_CLOCK 0x2820                    // Bus clock speed in Hz (for DriverServicesLib patch)
#define XLM_EMUL_RETURN_PROC 0x2824             // Pointer to EMUL_RETURN routine
#define XLM_EXEC_RETURN_PROC 0x2828             // Pointer to EXEC_RETURN routine
#define XLM_EMUL_OP_PROC 0x282c                 // Pointer to EMUL_OP routine
#define XLM_EMUL_RETURN_STACK 0x2830    // Stack pointer for EMUL_RETURN
#define XLM_RES_LIB_TOC 0x2834                  // TOC pointer of Resources library
#define XLM_GET_RESOURCE 0x2838                 // Pointer to native GetResource() routine
#define XLM_GET_1_RESOURCE 0x283c               // Pointer to native Get1Resource() routine
#define XLM_GET_IND_RESOURCE 0x2840             // Pointer to native GetIndResource() routine
#define XLM_GET_1_IND_RESOURCE 0x2844   // Pointer to native Get1IndResource() routine
#define XLM_R_GET_RESOURCE 0x2848               // Pointer to native RGetResource() routine
#define XLM_EXEC_RETURN_OPCODE 0x284c   // EXEC_RETURN opcode for Execute68k()
#define XLM_ZERO_PAGE 0x2850                    // Pointer to read-only page with all bits set to 0
#define XLM_R13 0x2854                                  // Pointer to .sdata section (Linux)

#define XLM_ETHER_INIT 0x28c0                   // Pointer to ethernet InitStreamModule() function
#define XLM_ETHER_TERM 0x28c4                   // Pointer to ethernet TerminateStreamModule() function
#define XLM_ETHER_OPEN 0x28c8                   // Pointer to ethernet ether_open() function
#define XLM_ETHER_CLOSE 0x28cc                  // Pointer to ethernet ether_close() function
#define XLM_ETHER_WPUT 0x28d0                   // Pointer to ethernet ether_wput() function
#define XLM_ETHER_RSRV 0x28d4                   // Pointer to ethernet ether_rsrv() function
#define XLM_VIDEO_DOIO 0x28d8                   // Pointer to video DoDriverIO() function

#endif
Revision:	1.5
Committed:	2005-02-27T21:52:06Z (19 years, 8 months ago) by gbeauche
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+1 -0 lines
Log Message:	Fix native Linux/ppc with recent enough glibc that supports TLS; r2 is used in that case. Tell me if I broke other arches, e.g. r13 is no longer saved in Video and Ethernet stubs, though it seems to be OK. Colateral feature: SheepShaver should now run on Linux/ppc64 with relevant 32-bit runtime. Native Linux/ppc64 support is harder as low mem globals are 32-bit in mind and e.g. the TLS register there is %r13, %r2 is the TOC (PowerOpen/AIX ABI)
#	User	Rev	Content
1	cebix	1.1	/*
2			* xlowmem.h - Definitions for extra Low Memory globals (0x2800..)
3			*
4	gbeauche	1.4	* 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			#ifndef XLOWMEM_H
22			#define XLOWMEM_H
23
24			// Modes for XLM_RUN_MODE
25			#define MODE_68K 0 // 68k emulator active
26			#define MODE_NATIVE 1 // Switched to native mode
27			#define MODE_EMUL_OP 2 // 68k emulator active, within EMUL_OP routine
28
29			#define XLM_SIGNATURE 0x2800 // SheepShaver signature
30			#define XLM_KERNEL_DATA 0x2804 // Pointer to Kernel Data
31			#define XLM_TOC 0x2808 // TOC pointer of emulator
32			#define XLM_SHEEP_OBJ 0x280c // Pointer to SheepShaver object
33			#define XLM_RUN_MODE 0x2810 // Current run mode, see enum above
34			#define XLM_68K_R25 0x2814 // Contents of the 68k emulator's r25 (which contains the interrupt level), saved upon entering EMUL_OP mode, used by Execute68k() and the USR1 signal handler
35			#define XLM_IRQ_NEST 0x2818 // Interrupt disable nesting counter (>0: disabled)
36			#define XLM_PVR 0x281c // Theoretical PVR
37			#define XLM_BUS_CLOCK 0x2820 // Bus clock speed in Hz (for DriverServicesLib patch)
38			#define XLM_EMUL_RETURN_PROC 0x2824 // Pointer to EMUL_RETURN routine
39			#define XLM_EXEC_RETURN_PROC 0x2828 // Pointer to EXEC_RETURN routine
40			#define XLM_EMUL_OP_PROC 0x282c // Pointer to EMUL_OP routine
41			#define XLM_EMUL_RETURN_STACK 0x2830 // Stack pointer for EMUL_RETURN
42			#define XLM_RES_LIB_TOC 0x2834 // TOC pointer of Resources library
43			#define XLM_GET_RESOURCE 0x2838 // Pointer to native GetResource() routine
44			#define XLM_GET_1_RESOURCE 0x283c // Pointer to native Get1Resource() routine
45			#define XLM_GET_IND_RESOURCE 0x2840 // Pointer to native GetIndResource() routine
46			#define XLM_GET_1_IND_RESOURCE 0x2844 // Pointer to native Get1IndResource() routine
47			#define XLM_R_GET_RESOURCE 0x2848 // Pointer to native RGetResource() routine
48			#define XLM_EXEC_RETURN_OPCODE 0x284c // EXEC_RETURN opcode for Execute68k()
49	gbeauche	1.2	#define XLM_ZERO_PAGE 0x2850 // Pointer to read-only page with all bits set to 0
50	gbeauche	1.5	#define XLM_R13 0x2854 // Pointer to .sdata section (Linux)
51	cebix	1.1
52			#define XLM_ETHER_INIT 0x28c0 // Pointer to ethernet InitStreamModule() function
53			#define XLM_ETHER_TERM 0x28c4 // Pointer to ethernet TerminateStreamModule() function
54			#define XLM_ETHER_OPEN 0x28c8 // Pointer to ethernet ether_open() function
55			#define XLM_ETHER_CLOSE 0x28cc // Pointer to ethernet ether_close() function
56			#define XLM_ETHER_WPUT 0x28d0 // Pointer to ethernet ether_wput() function
57			#define XLM_ETHER_RSRV 0x28d4 // Pointer to ethernet ether_rsrv() function
58			#define XLM_VIDEO_DOIO 0x28d8 // Pointer to video DoDriverIO() function
59
60			#endif