Third try at importing the mvme88k port. This is a working kernel

from nivas.
Userland and compiler still need to be worked on.
Make certain what directory the import is done from.

1 files changed, 249 insertions, 0 deletions

diff --git a/sys/arch/mvme88k/machine/asm.h b/sys/arch/mvme88k/machine/asm.h
new file mode 100644
index 00000000000..2c89b9e2191
--- /dev/null
+++ b/sys/arch/mvme88k/machine/asm.h
@@ -0,0 +1,249 @@
+/*
+ * Mach Operating System
+ * Copyright (c) 1993-1992 Carnegie Mellon University
+ * Copyright (c) 1991 OMRON Corporation
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON AND OMRON DISCLAIM ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+#ifndef __M88K_ASM_H__
+#define __M88K_ASM_H__
+
+#ifdef __STDC__
+#	define FUNC(NAME) _##NAME
+#else
+#	define FUNC(NAME) _/**/NAME
+#endif
+
+/* Define EH_DEBUG to be non-zero to compile-in various debugging things */
+#ifndef	EH_DEBUG
+#define EH_DEBUG 0
+#endif	EH_DEBUG
+
+/* this gives the offsets into various structures of various elements, etc */
+#include "assym.s"
+
+#define	ENTRY(NAME) \
+    .align 8; .globl FUNC(NAME); FUNC(NAME):
+    
+
+#define  LABEL(name)	name:;  .globl name ;
+/*
+ * _LABEL(name)
+ *	Defines one visible only to the file, unless debugging
+ * 	is enabled, in which case it's visible to the world (and
+ *	hence to debuggers, and such).
+ */
+#if EH_DEBUG
+#  define _LABEL(name)	name:	.globl name ;
+#else
+#  define _LABEL(name)	name:               ;
+#endif
+
+#define RTE	NOP ; rte
+
+#define PID	cr0
+#define PSR	cr1
+#define EPSR	cr2
+#define SSBR	cr3
+#define SXIP	cr4
+#define SNIP	cr5
+#define SFIP	cr6
+#define VBR	cr7
+#define DMT0	cr8
+#define DMD0	cr9
+#define DMA0	cr10
+#define DMT1	cr11
+#define DMD1	cr12
+#define DMA1	cr13
+#define DMT2	cr14
+#define DMD2	cr15
+#define DMA2	cr16
+#define SR0	cr17
+#define SR1	cr18
+#define SR2	cr19
+#define SR3	cr20
+#define FPECR	fcr0
+#define FPHS1	fcr1
+#define FPLS1	fcr2
+#define FPHS2	fcr3
+#define FPLS2	fcr4
+#define FPPT	fcr5
+#define FPRH	fcr6
+#define FPRL	fcr7
+#define FPIT	fcr8
+#define FPSR	fcr62
+#define FPCR	fcr63
+
+/*
+ * At various times, there is the need to clear the pipeline (i.e.
+ * synchronize).  A "tb1 0, r0, foo" will do that (because a trap
+ * instruction always synchronizes, and this particular instruction
+ * will never actually take the trap).
+ */
+#define FLUSH_PIPELINE	tb1 0, r0, 0
+#define NOP		or r0, r0, r0
+
+/*
+ * Useful in some situations.
+ * NOTE: If ARG1 or ARG2 are r2 or r3, strange things may happen.  Watch out!
+ */
+#define CALL(NAME, ARG1, ARG2)             \
+  		subu	r31, r31, 32	; \
+                or      r2, r0, ARG1    ; \
+                bsr.n   NAME            ; \
+                or      r3, r0, ARG2	; \
+		addu	r31, r31, 32
+
+/*
+ * SR1 - CPU FLAGS REGISTER
+ * XXX clean this when the trap handler is reworked. Among the things
+ * I like to see is having the trap frame on the kernel stack instead
+ * of putting in the PCB. If done properly, we don't need SR1 for doing
+ * anything special. nivas
+ * 
+ * SR1 contains flags about the current CPU status.
+ *
+ * The bit FLAG_IGNORE_DATA_EXCEPTION indicates that any data exceptions
+ * 	should be ignored (well, at least treated in a special way).
+ * The bit FLAG_INTERRUPT_EXCEPTION indicates that the current exception
+ * 	is the interrupt exception.  Such information can be gotten
+ * 	in other ways, but having it in the flags makes it easy for the
+ *	exception handler to check quickly.
+ * The bit FLAG_ENABLING_FPU indicates that the exception handler is
+ * 	in the process of enabling the FPU (so that an exception can
+ * 	be serviced).  This is needed because enabling the FPU can
+ *	cause other exceptions to happen, and the whole system is
+ *	in a rather precarious state and so special cautions must
+ * 	be taken.
+ */
+#define FLAG_CPU_FIELD_WIDTH		4	/* must be <= 12 */
+
+#define FLAG_IGNORE_DATA_EXCEPTION	5	/* bit number 5 */
+#define FLAG_INTERRUPT_EXCEPTION	6	/* bit number 6 */
+#define FLAG_ENABLING_FPU		7	/* bit number 7 */
+
+
+/* REGister OFFset into the E.F. (exception frame) */
+#define REG_OFF(reg_num)  ((reg_num) * 4) /* (num * sizeof(register int))  */
+#define GENREG_OFF(num)	(REG_OFF(EF_R0 + (num))) /* GENeral REGister OFFset */
+
+
+#define GENERAL_BREATHING_ROOM	/* arbitrarily */ 200
+#define KERNEL_STACK_BREATHING_ROOM 	\
+	(GENERAL_BREATHING_ROOM + SIZEOF_STRUCT_PCB + SIZEOF_STRUCT_UTHREAD)
+
+/*
+ * Some registers used during the setting up of the new exception frame.
+ * Don't choose r1, r30, or r31 for any of them.
+ *
+ * Also, if any are 'r2' or 'r3', be careful using with CALL above!
+ */
+#define FLAGS	r2
+#define TMP	r3
+#define TMP2	r10
+#define TMP3	r11
+#define SAVE_TMP2	st	r10, r31, GENREG_OFF(10)
+#define SAVE_TMP3	st	r11, r31, GENREG_OFF(11)
+#define RESTORE_TMP2	ld	r10, r31, GENREG_OFF(10)
+#define RESTORE_TMP3	ld	r11, r31, GENREG_OFF(11)
+
+/*
+ * Info about the PSR 
+ */
+#define PSR_SHADOW_FREEZE_BIT		 0
+#define PSR_INTERRUPT_DISABLE_BIT	 1
+#define PSR_FPU_DISABLE_BIT		 3
+#define PSR_BIG_ENDIAN_MODE		30
+#define PSR_SUPERVISOR_MODE_BIT		31
+
+/*
+ * Status bits for an SXIP/SNIP/SFIP address.
+ */
+#define RTE_VALID_BIT	 1
+#define RTE_ERROR_BIT	 0
+
+/*
+ * Info about DMT0/DMT1/DMT2
+ */
+#define DMT_VALID_BIT	 0
+#define DMT_WRITE_BIT 	 1
+#define DMT_LOCK_BIT	12
+#define DMT_DOUBLE_BIT	13
+#define DMT_DAS_BIT     14
+#define DMT_DREG_OFFSET	 7
+#define DMT_DREG_WIDTH	 5
+
+/*
+ * Bits for eh_debug.
+ */
+#define DEBUG_INTERRUPT_BIT		 0
+#define DEBUG_DATA_BIT			 1
+#define DEBUG_INSTRUCTION_BIT		 2
+#define DEBUG_MISALIGN_BIT		 3
+#define DEBUG_UNIMP_BIT			 4
+#define DEBUG_DIVIDE_BIT		 5
+#define DEBUG_OF_BIT			 6
+#define DEBUG_FPp_BIT			 7
+#define DEBUG_FPi_BIT			 8
+#define DEBUG_SYSCALL_BIT	 	 9
+#define DEBUG_MACHSYSCALL_BIT		10
+#define DEBUG_UNIMPLEMENTED_BIT		11
+#define DEBUG_PRIVILEGE_BIT		12
+#define DEBUG_BOUNDS_BIT		13
+#define DEBUG_OVERFLOW_BIT		14
+#define DEBUG_ERROR_BIT			15
+#define DEBUG_SIGSYS_BIT		16
+#define DEBUG_SIGTRAP_BIT		17
+#define DEBUG_BREAK_BIT			18
+#define DEBUG_TRACE_BIT			19
+#define DEBUG_KDB_BIT			20
+#define DEBUG_JKDB_BIT			21
+#define DEBUG_BUGCALL_BIT		22
+
+#define DEBUG_UNKNOWN_BIT		31
+
+/*
+ * These things for vector_init.c and locore.c
+ */
+#if defined(ASSEMBLER)
+# define  PREDEFINED_BY_ROM       0xffffffff
+# define  END_OF_VECTOR_LIST      0xfffffffe
+#else
+# define  PREDEFINED_BY_ROM       0xffffffffU
+# define  END_OF_VECTOR_LIST      0xfffffffeU
+#endif
+
+/*
+ * Define ERROR__XXX_USR if the xxx.usr bug (mask C82N) is present.
+ * This implements the workaround.
+ */
+#define ERRATA__XXX_USR 	1
+
+#if !defined(CMMU_I)
+#define CMMU_I	0xFFF77000
+#endif
+#if !defined(CMMU_D)
+#define CMMU_D	0xFFF7F000
+#endif
+
+#endif /* __M88K_ASM_H__ */