/*      $OpenBSD: asm.h,v 1.16 2022/12/06 18:50:59 guenther Exp $       */

/*
 * 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_

#define _C_LABEL(name)          name
#define _ASM_LABEL(name)        name

#define _ENTRY(name) \
        .text; .align 3; .globl name; .type name,@function; name:

#define ENTRY(name)             _ENTRY(name)
#define ASENTRY(name)           _ENTRY(name)

#define END(name) \
        .size name,.-name

#define GLOBAL(name) \
        .globl name; name:

#define ASGLOBAL(name) \
        .globl name; name:

#define LOCAL(name) \
        name:

#define ASLOCAL(name) \
        name:

#define BSS(name, size) \
        .comm   name, size

#define ASBSS(name, size) \
        .comm   name, size

#define STRONG_ALIAS(alias,sym)                                         \
        .global alias;                                                  \
        alias = sym
#define WEAK_ALIAS(alias,sym)                                           \
        .weak alias;                                                    \
        alias = sym

#ifdef _KERNEL

#ifdef _LOCORE

/*
 * Control register symbolic names
 */

#define PID     %cr0
#define PSR     %cr1
#define EPSR    %cr2
#define SSBR    %cr3
#define SXIP    %cr4            /* 88100 */
#define EXIP    %cr4            /* 88110 */
#define SNIP    %cr5            /* 88100 */
#define ENIP    %cr5            /* 88110 */
#define SFIP    %cr6            /* 88100 */
#define VBR     %cr7
#define DMT0    %cr8            /* 88100 */
#define DMD0    %cr9            /* 88100 */
#define DMA0    %cr10           /* 88100 */
#define DMT1    %cr11           /* 88100 */
#define DMD1    %cr12           /* 88100 */
#define DMA1    %cr13           /* 88100 */
#define DMT2    %cr14           /* 88100 */
#define DMD2    %cr15           /* 88100 */
#define DMA2    %cr16           /* 88100 */
#define SRX     %cr16           /* 88110 */
#define SR0     %cr17
#define SR1     %cr18
#define SR2     %cr19
#define SR3     %cr20
#define ICMD    %cr25           /* 88110 */
#define ICTL    %cr26           /* 88110 */
#define ISAR    %cr27           /* 88110 */
#define ISAP    %cr28           /* 88110 */
#define IUAP    %cr29           /* 88110 */
#define IIR     %cr30           /* 88110 */
#define IBP     %cr31           /* 88110 */
#define IPPU    %cr32           /* 88110 */
#define IPPL    %cr33           /* 88110 */
#define ISR     %cr34           /* 88110 */
#define ILAR    %cr35           /* 88110 */
#define IPAR    %cr36           /* 88110 */
#define DCMD    %cr40           /* 88110 */
#define DCTL    %cr41           /* 88110 */
#define DSAR    %cr42           /* 88110 */
#define DSAP    %cr43           /* 88110 */
#define DUAP    %cr44           /* 88110 */
#define DIR     %cr45           /* 88110 */
#define DBP     %cr46           /* 88110 */
#define DPPU    %cr47           /* 88110 */
#define DPPL    %cr48           /* 88110 */
#define DSR     %cr49           /* 88110 */
#define DLAR    %cr50           /* 88110 */
#define DPAR    %cr51           /* 88110 */

#define FPECR   %fcr0
#define FPHS1   %fcr1           /* 88100 */
#define FPLS1   %fcr2           /* 88100 */
#define FPHS2   %fcr3           /* 88100 */
#define FPLS2   %fcr4           /* 88100 */
#define FPPT    %fcr5           /* 88100 */
#define FPRH    %fcr6           /* 88100 */
#define FPRL    %fcr7           /* 88100 */
#define FPIT    %fcr8           /* 88100 */
#define FPSR    %fcr62
#define FPCR    %fcr63

#define CPU     SR0

/*
 * 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
#define RTE                     NOP; rte

/*
 * PSR bits
 */
#define PSR_SHADOW_FREEZE_BIT           0
#define PSR_INTERRUPT_DISABLE_BIT       1
#define PSR_FPU_DISABLE_BIT             3
#define PSR_GRAPHICS_DISABLE_BIT        4       /* SFU2 - MC88110 */
#define PSR_SERIALIZE_BIT               25      /* MC88110 */
#define PSR_CARRY_BIT                   28
#define PSR_SERIAL_MODE_BIT             29
#define PSR_BIG_ENDIAN_MODE             30
#define PSR_SUPERVISOR_MODE_BIT         31

/*
 * DMT0/DMT1/DMT2 bits
 */
#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

/*
 * Status bits for an SXIP/SNIP/SFIP address.
 */
#define RTE_VALID_BIT           1
#define RTE_ERROR_BIT           0

#define VECTOR(x) \
        .word   x

#endif  /* _LOCORE */

#endif  /* _KERNEL */

#endif  /* _M88K_ASM_H_ */