// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************

    ppccom.h

    Common PowerPC definitions and functions

***************************************************************************/

#pragma once

#ifndef __PPCCOM_H__
#define __PPCCOM_H__

#include "ppc.h"


/***************************************************************************
    DEBUGGING
***************************************************************************/

#define DISABLE_FLAG_OPTIMIZATIONS      (0)
#define DISABLE_FAST_REGISTERS          (0)
#define SINGLE_INSTRUCTION_MODE         (0)

#define PRINTF_EXCEPTIONS               (0)
#define PRINTF_MMU                      (0)

#define PROBE_ADDRESS                   ~0


/***************************************************************************
    CONSTANTS
***************************************************************************/

/* size of the execution code cache */
#define CACHE_SIZE                      (32 * 1024 * 1024)

/* compilation boundaries -- how far back/forward does the analysis extend? */
#define COMPILE_BACKWARDS_BYTES         128
#define COMPILE_FORWARDS_BYTES          512
#define COMPILE_MAX_INSTRUCTIONS        ((COMPILE_BACKWARDS_BYTES/4) + (COMPILE_FORWARDS_BYTES/4))
#define COMPILE_MAX_SEQUENCE            64


/* core parameters */
#define POWERPC_MIN_PAGE_SHIFT      12
#define POWERPC_MIN_PAGE_SIZE       (1 << POWERPC_MIN_PAGE_SHIFT)
#define POWERPC_MIN_PAGE_MASK       (POWERPC_MIN_PAGE_SIZE - 1)
#define POWERPC_TLB_ENTRIES         128
#define PPC603_FIXED_TLB_ENTRIES    128


/* cycle parameters */
#define POWERPC_COUNT_READ_TBL      100
#define POWERPC_COUNT_READ_DEC      100


/* internal capabilities flags */
#define PPCCAP_OEA                  0x01        /* TRUE if we conform to the OEA */
#define PPCCAP_VEA                  0x02        /* TRUE if we conform to the VEA */
#define PPCCAP_FPU                  0x04        /* TRUE if we have an FPU */
#define PPCCAP_MISALIGNED           0x08        /* TRUE if misaligned accesses are supported */
#define PPCCAP_4XX                  0x10        /* TRUE if we are a non-OEA 4XX class chip */
#define PPCCAP_603_MMU              0x20        /* TRUE if we have 603-class MMU features */
#define PPCCAP_MFIOC                0x40        /* TRUE if we have memory-forced I/O controller interface accesses */
#define PPCCAP_601BAT               0x80        /* TRUE if we're doing 601-style BATs (unified I/D, different bit layout) */
#define PPCCAP_604_MMU              0x100       /* TRUE if we have 604-class MMU features */


/* exception types */
enum
{
	EXCEPTION_RESET         = 1,
	EXCEPTION_MACHCHECK     = 2,
	EXCEPTION_DSI           = 3,        /* PPCCAP_OEA */
	EXCEPTION_PROTECTION    = 3,        /* PPCCAP_4XX */
	EXCEPTION_ISI           = 4,
	EXCEPTION_EI            = 5,
	EXCEPTION_ALIGN         = 6,
	EXCEPTION_PROGRAM       = 7,
	EXCEPTION_NOFPU         = 8,
	EXCEPTION_DECREMENT     = 9,
	EXCEPTION_SYSCALL       = 12,
	EXCEPTION_TRACE         = 13,
	EXCEPTION_FPASSIST      = 14,
	EXCEPTION_ITLBMISS      = 16,       /* PPCCAP_603_MMU */
	EXCEPTION_DTLBMISSL     = 17,       /* PPCCAP_603_MMU */
	EXCEPTION_DTLBMISSS     = 18,       /* PPCCAP_603_MMU */
	EXCEPTION_COUNT
};


/* SPRs */
enum
{
	/* UISA SPR register indexes */
	SPR_XER             = 0x001,    /* R/W  Fixed Point Exception Register */
	SPR_LR              = 0x008,    /* R/W  Link Register */
	SPR_CTR             = 0x009,    /* R/W  Count Register */

	/* VEA SPR register indexes */
	SPRVEA_TBL_R        = 0x10c,    /* R    Time Base Low */
	SPRVEA_TBU_R        = 0x10d,    /* R    Time Base High */

	/* OEA SPR register indexes */
	SPROEA_DSISR        = 0x012,    /* R/W  DSI Status Register */
	SPROEA_DAR          = 0x013,    /* R/W  Data Address Register */
	SPROEA_DEC          = 0x016,    /* R/W  Decrementer Register */
	SPROEA_SDR1         = 0x019,    /* R/W  Page Table Configuration */
	SPROEA_SRR0         = 0x01a,    /* R/W  Machine Status Save/Restore Register 0 */
	SPROEA_SRR1         = 0x01b,    /* R/W  Machine Status Save/Restore Register 1 */
	SPROEA_SPRG0        = 0x110,    /* R/W  SPR General 0 */
	SPROEA_SPRG1        = 0x111,    /* R/W  SPR General 1 */
	SPROEA_SPRG2        = 0x112,    /* R/W  SPR General 2 */
	SPROEA_SPRG3        = 0x113,    /* R/W  SPR General 3 */
	SPROEA_ASR          = 0x118,    /* R/W  Address Space Register (64-bit only) */
	SPROEA_EAR          = 0x11a,    /* R/W  External Access Register */
	SPROEA_PVR          = 0x11f,    /* R    Processor Version Number */
	SPROEA_IBAT0U       = 0x210,    /* R/W  Instruction BAT 0 Upper */
	SPROEA_IBAT0L       = 0x211,    /* R/W  Instruction BAT 0 Lower */
	SPROEA_IBAT1U       = 0x212,    /* R/W  Instruction BAT 1 Upper */
	SPROEA_IBAT1L       = 0x213,    /* R/W  Instruction BAT 1 Lower */
	SPROEA_IBAT2U       = 0x214,    /* R/W  Instruction BAT 2 Upper */
	SPROEA_IBAT2L       = 0x215,    /* R/W  Instruction BAT 2 Lower */
	SPROEA_IBAT3U       = 0x216,    /* R/W  Instruction BAT 3 Upper */
	SPROEA_IBAT3L       = 0x217,    /* R/W  Instruction BAT 3 Lower */
	SPROEA_DBAT0U       = 0x218,    /* R/W  Data BAT 0 Upper */
	SPROEA_DBAT0L       = 0x219,    /* R/W  Data BAT 0 Lower */
	SPROEA_DBAT1U       = 0x21a,    /* R/W  Data BAT 1 Upper */
	SPROEA_DBAT1L       = 0x21b,    /* R/W  Data BAT 1 Lower */
	SPROEA_DBAT2U       = 0x21c,    /* R/W  Data BAT 2 Upper */
	SPROEA_DBAT2L       = 0x21d,    /* R/W  Data BAT 2 Lower */
	SPROEA_DBAT3U       = 0x21e,    /* R/W  Data BAT 3 Upper */
	SPROEA_DBAT3L       = 0x21f,    /* R/W  Data BAT 3 Lower */
	SPROEA_DABR         = 0x3f5,    /* R/W  Data Address Breakpoint Register */

	/* PowerPC 4XX SPR register indexes */
	SPR4XX_SRR0         = 0x01a,    /* R/W  403GA Machine Status Save/Restore Register 0 */
	SPR4XX_SRR1         = 0x01b,    /* R/W  403GA Machine Status Save/Restore Register 1 */
	SPR4XX_SPRG0        = 0x110,    /* R/W  403GA SPR General 0 */
	SPR4XX_SPRG1        = 0x111,    /* R/W  403GA SPR General 1 */
	SPR4XX_SPRG2        = 0x112,    /* R/W  403GA SPR General 2 */
	SPR4XX_SPRG3        = 0x113,    /* R/W  403GA SPR General 3 */
	SPR4XX_PVR          = 0x11f,    /* R    403GA Processor Version Number */
	SPR4XX_PID          = 0x3b1,    /* R/W  403GCX Process ID */
	SPR4XX_SGR          = 0x3b9,    /* R/W  403GCX Storage Guarded Register */
	SPR4XX_DCWR         = 0x3ba,    /* R/W  403GCX Data Cache Write Through */
	SPR4XX_TBHU         = 0x3cc,    /* R/W  403GCX Time Base High User-mode */
	SPR4XX_TBLU         = 0x3cd,    /* R/W  403GCX Time Base Low User-mode */
	SPR4XX_ICDBDR       = 0x3d3,    /* R    403GA 406GA Instruction Cache Debug Data Register */
	SPR4XX_ESR          = 0x3d4,    /* R/W  403GA 406GA Exception Syndrome Register */
	SPR4XX_DEAR         = 0x3d5,    /* R    403GA 406GA Data Exception Address Register */
	SPR4XX_EVPR         = 0x3d6,    /* R/W  403GA 406GA Exception Vector Prefix Register */
	SPR4XX_CDBCR        = 0x3d7,    /* R/W  403GA 406GA Cache Debug Control Register */
	SPR4XX_TSR          = 0x3d8,    /* R/C  403GA 406GA Timer Status Register */
	SPR4XX_TCR          = 0x3da,    /* R/W  403GA 406GA Timer Control Register */
	SPR4XX_PIT          = 0x3db,    /* R/W  403GA 406GA Programmable Interval Timer */
	SPR4XX_TBHI         = 0x3dc,    /* R/W  403GA 406GA Time Base High */
	SPR4XX_TBLO         = 0x3dd,    /* R/W  403GA 406GA Time Base Low */
	SPR4XX_SRR2         = 0x3de,    /* R/W  403GA 406GA Machine Status Save/Restore Register 2 */
	SPR4XX_SRR3         = 0x3df,    /* R/W  403GA 406GA Machine Status Save/Restore Register 3 */
	SPR4XX_DBSR         = 0x3f0,    /* R/C  403GA 406GA Debug Status Register */
	SPR4XX_DBCR         = 0x3f2,    /* R/W  403GA 406GA Debug Control Register */
	SPR4XX_IAC1         = 0x3f4,    /* R/W  403GA 406GA Instruction Address Compare 1 */
	SPR4XX_IAC2         = 0x3f5,    /* R/W  403GA 406GA Instruction Address Compare 2 */
	SPR4XX_DAC1         = 0x3f6,    /* R/W  403GA 406GA Data Address Compare 1 */
	SPR4XX_DAC2         = 0x3f7,    /* R/W  403GA 406GA Data Address Compare 2 */
	SPR4XX_DCCR         = 0x3fa,    /* R/W  403GA 406GA Data Cache Cacheability Register */
	SPR4XX_ICCR         = 0x3fb,    /* R/W  403GA 406GA Instruction Cache Cacheability Registe */
	SPR4XX_PBL1         = 0x3fc,    /* R/W  403GA 406GA Protection Bound Lower 1 */
	SPR4XX_PBU1         = 0x3fd,    /* R/W  403GA 406GA Protection Bound Upper 1 */
	SPR4XX_PBL2         = 0x3fe,    /* R/W  403GA 406GA Protection Bound Lower 2 */
	SPR4XX_PBU2         = 0x3ff,    /* R/W  403GA 406GA Protection Bound Upper 2 */

	/* PowerPC 602 SPR register indexes */
	SPR602_TCR          = 0x3d8,    /* 602 */
	SPR602_IBR          = 0x3da,    /* 602 */
	SPR602_ESASRR       = 0x3db,    /* 602 */
	SPR602_SEBR         = 0x3de,    /* 602 */
	SPR602_SER          = 0x3df,    /* 602 */
	SPR602_SP           = 0x3fd,    /* 602 */
	SPR602_LT           = 0x3fe,    /* 602 */

	/* PowerPC 603 SPR register indexes */
	SPR603_TBL_R        = 0x10c,    /* R   603 Time Base Low (Read-only) */
	SPR603_TBU_R        = 0x10d,    /* R   603 Time Base High (Read-only) */
	SPR603_TBL_W        = 0x11c,    /* W   603 Time Base Low (Write-only) */
	SPR603_TBU_W        = 0x11d,    /* W   603 Time Base Hight (Write-only) */
	SPR603_DMISS        = 0x3d0,    /* R   603 Data TLB Miss Address Register */
	SPR603_DCMP         = 0x3d1,    /* R   603 Data TLB Compare Register */
	SPR603_HASH1        = 0x3d2,    /* R   603 Primary Hash Address Register */
	SPR603_HASH2        = 0x3d3,    /* R   603 Secondary Hash Address Register */
	SPR603_IMISS        = 0x3d4,    /* R   603 Instruction TLB Miss Address Register */
	SPR603_ICMP         = 0x3d5,    /* R   603 Instruction TLB Compare Register */
	SPR603_RPA          = 0x3d6,    /* R/W 603 Required Physical Address Register */
	SPR603_HID0         = 0x3f0,    /* R/W 603 Hardware Implementation Register 0 */
	SPR603_HID1         = 0x3f1,    /* R/W 603 Hardware Implementation Register 1 */
	SPR603_IABR         = 0x3f2,    /* R/W 603 Instruction Address Breakpoint Register */
	SPR603_HID2         = 0x3f3     /* R/W 603 */
};


/* PowerPC 4XX DCR register indexes */
enum
{
	DCR4XX_EXISR        = 0x040,    /* external interrupt status */
	DCR4XX_EXIER        = 0x042,    /* external interrupt enable */
	DCR4XX_BR0          = 0x080,    /* bank */
	DCR4XX_BR1          = 0x081,    /* bank */
	DCR4XX_BR2          = 0x082,    /* bank */
	DCR4XX_BR3          = 0x083,    /* bank */
	DCR4XX_BR4          = 0x084,    /* bank */
	DCR4XX_BR5          = 0x085,    /* bank */
	DCR4XX_BR6          = 0x086,    /* bank */
	DCR4XX_BR7          = 0x087,    /* bank */
	DCR4XX_BEAR         = 0x090,    /* bus error address */
	DCR4XX_BESR         = 0x091,    /* bus error syndrome */
	DCR4XX_IOCR         = 0x0a0,    /* io configuration */
	DCR4XX_DMACR0       = 0x0c0,    /* dma channel control */
	DCR4XX_DMACT0       = 0x0c1,    /* dma destination address */
	DCR4XX_DMADA0       = 0x0c2,    /* dma destination address */
	DCR4XX_DMASA0       = 0x0c3,    /* dma source address */
	DCR4XX_DMACC0       = 0x0c4,    /* dma chained count */
	DCR4XX_DMACR1       = 0x0c8,    /* dma channel control */
	DCR4XX_DMACT1       = 0x0c9,    /* dma destination address */
	DCR4XX_DMADA1       = 0x0ca,    /* dma destination address */
	DCR4XX_DMASA1       = 0x0cb,    /* dma source address */
	DCR4XX_DMACC1       = 0x0cc,    /* dma chained count */
	DCR4XX_DMACR2       = 0x0d0,    /* dma channel control */
	DCR4XX_DMACT2       = 0x0d1,    /* dma destination address */
	DCR4XX_DMADA2       = 0x0d2,    /* dma source address */
	DCR4XX_DMASA2       = 0x0d3,    /* dma source address */
	DCR4XX_DMACC2       = 0x0d4,    /* dma chained count */
	DCR4XX_DMACR3       = 0x0d8,    /* dma channel control */
	DCR4XX_DMACT3       = 0x0d9,    /* dma destination address */
	DCR4XX_DMADA3       = 0x0da,    /* dma source address */
	DCR4XX_DMASA3       = 0x0db,    /* dma source address */
	DCR4XX_DMACC3       = 0x0dc,    /* dma chained count */
	DCR4XX_DMASR        = 0x0e0     /* dma status */
};


/* PowerPC 4XX SPU register indexes */
enum
{
	SPU4XX_LINE_STATUS      = 0x00,
	SPU4XX_HANDSHAKE_STATUS = 0x02,
	SPU4XX_BAUD_DIVISOR_H   = 0x04,
	SPU4XX_BAUD_DIVISOR_L   = 0x05,
	SPU4XX_CONTROL          = 0x06,
	SPU4XX_RX_COMMAND       = 0x07,
	SPU4XX_TX_COMMAND       = 0x08,
	SPU4XX_BUFFER           = 0x09
};


/* FPSCR register bits */
#define FPSCR_FX            0x80000000
#define FPSCR_FEX           0x40000000
#define FPSCR_VX            0x20000000
#define FPSCR_OX            0x10000000
#define FPSCR_UX            0x08000000
#define FPSCR_ZX            0x04000000
#define FPSCR_XX            0x02000000


/* XER register bits */
#define XER_SO              0x80000000
#define XER_OV              0x40000000
#define XER_CA              0x20000000


/* Machine State Register bits - common */
#define MSR_ILE             0x00010000  /* Interrupt Little Endian Mode */
#define MSR_EE              0x00008000  /* External Interrupt Enable */
#define MSR_PR              0x00004000  /* Problem State */
#define MSR_ME              0x00001000  /* Machine Check Enable */
#define MSR_LE              0x00000001  /* Little Endian */

/* Machine State Register bits - OEA */
#define MSROEA_POW          0x00040000  /* Power Management Enable */
#define MSROEA_FP           0x00002000  /* Floating Point Available */
#define MSROEA_FE0          0x00000800  /* FP Exception Mode 0 */
#define MSROEA_SE           0x00000400  /* Single Step Trace Enable */
#define MSROEA_BE           0x00000200  /* Branch Trace Enable */
#define MSROEA_FE1          0x00000100  /* FP Exception Mode 1 */
#define MSROEA_IP           0x00000040  /* Interrupt Prefix */
#define MSROEA_IR           0x00000020  /* Instruction Relocate */
#define MSROEA_DR           0x00000010  /* Data Relocate */
#define MSROEA_RI           0x00000002  /* Recoverable Interrupt Enable */

/* Machine State Register bits - 4XX */
#define MSR4XX_WE           0x00040000  /* Wait State Enable */
#define MSR4XX_CE           0x00020000  /* Critical Interrupt Enable */
#define MSR4XX_DE           0x00000200  /* Debug Exception Enable */
#define MSR4XX_PE           0x00000008  /* Protection Enable (reserved for others) */
#define MSR4XX_PX           0x00000004  /* Protection Exclusive Mode (reserved for others) */

/* Machine State Register bits - 602 */
#define MSR602_AP           0x00800000  /* Access privilege state */
#define MSR602_SA           0x00400000  /* Supervisor access mode */

/* Machine State Register bits - 603 */
#define MSR603_TGPR         0x00020000  /* Temporary GPR Remapping */


/* DSISR bits for DSI/alignment exceptions */
#define DSISR_DIRECT        0x80000000      /* DSI: direct-store error interrupt */
#define DSISR_NOT_FOUND     0x40000000      /* DSI: not found in HTEG or DBAT */
#define DSISR_PROTECTED     0x08000000      /* DSI: exception due to protection */
#define DSISR_CACHE_ERROR   0x04000000      /* DSI: operation on incorrect cache type */
#define DSISR_STORE         0x02000000      /* DSI: store (1) or load (0) */
#define DSISR_DABR          0x00400000      /* DSI: DABR match occurred */
#define DSISR_NO_SEGMENT    0x00200000      /* DSI: no segment match found (64-bit only) */
#define DSISR_INVALID_ECWX  0x00100000      /* DSI: ECIWX or ECOWX used with EAR[E] = 0 */
#define DSISR_INSTRUCTION   0x000fffff      /* align: instruction decoding bits FIXME: mask/shift depends on addressing mode */


/* PowerPC 4XX IRQ bits */
#define PPC4XX_IRQ_BIT_CRITICAL     (0x80000000 >> 0)
#define PPC4XX_IRQ_BIT_SPUR         (0x80000000 >> 4)
#define PPC4XX_IRQ_BIT_SPUT         (0x80000000 >> 5)
#define PPC4XX_IRQ_BIT_JTAGR        (0x80000000 >> 6)
#define PPC4XX_IRQ_BIT_JTAGT        (0x80000000 >> 7)
#define PPC4XX_IRQ_BIT_DMA0         (0x80000000 >> 8)
#define PPC4XX_IRQ_BIT_DMA1         (0x80000000 >> 9)
#define PPC4XX_IRQ_BIT_DMA2         (0x80000000 >> 10)
#define PPC4XX_IRQ_BIT_DMA3         (0x80000000 >> 11)
#define PPC4XX_IRQ_BIT_EXT0         (0x80000000 >> 27)
#define PPC4XX_IRQ_BIT_EXT1         (0x80000000 >> 28)
#define PPC4XX_IRQ_BIT_EXT2         (0x80000000 >> 29)
#define PPC4XX_IRQ_BIT_EXT3         (0x80000000 >> 30)
#define PPC4XX_IRQ_BIT_EXT4         (0x80000000 >> 31)

#define PPC4XX_IRQ_BIT_EXT(n)       (PPC4XX_IRQ_BIT_EXT0 >> (n))
#define PPC4XX_IRQ_BIT_DMA(n)       (PPC4XX_IRQ_BIT_DMA0 >> (n))


/* PowerPC 4XX DMA control bits */
#define PPC4XX_DMACR_CE             0x80000000      /* channel enable */
#define PPC4XX_DMACR_CIE            0x40000000      /* channel interrupt enable */
#define PPC4XX_DMACR_TD             0x20000000      /* transfer direction */
#define PPC4XX_DMACR_PL             0x10000000      /* peripheral location */
#define PPC4XX_DMACR_PW_MASK        0x0c000000      /* peripheral width */
#define PPC4XX_DMACR_DAI            0x02000000      /* destination address increment */
#define PPC4XX_DMACR_SAI            0x01000000      /* source address increment */
#define PPC4XX_DMACR_CP             0x00800000      /* channel priority */
#define PPC4XX_DMACR_TM_MASK        0x00600000      /* transfer mode */
#define PPC4XX_DMACR_PSC_MASK       0x00180000      /* peripheral setup cycles */
#define PPC4XX_DMACR_PWC_MASK       0x0007e000      /* peripheral wait cycles */
#define PPC4XX_DMACR_PHC_MASK       0x00001c00      /* peripheral hold cycles */
#define PPC4XX_DMACR_ETD            0x00000200      /* end-of-transfer pin direction */
#define PPC4XX_DMACR_TCE            0x00000100      /* terminal count enable */
#define PPC4XX_DMACR_CH             0x00000080      /* chaining enable */
#define PPC4XX_DMACR_BME            0x00000040      /* burst mode enable */
#define PPC4XX_DMACR_ECE            0x00000020      /* EOT chain mode enable */
#define PPC4XX_DMACR_TCD            0x00000010      /* TC chain mode disable */
#define PPC4XX_DMACR_PCE            0x00000008


/* PowerPC 4XX Timer control register bits */
#define PPC4XX_TCR_WP_MASK          0xc0000000      /* watchdog period */
#define PPC4XX_TCR_WRC_MASK         0x30000000      /* watchdog reset control */
#define PPC4XX_TCR_WIE              0x08000000      /* watchdog interrupt enable */
#define PPC4XX_TCR_PIE              0x04000000      /* PIT interrupt enable */
#define PPC4XX_TCR_FP_MASK          0x03000000      /* FIT period */
#define PPC4XX_TCR_FIE              0x00800000      /* FIT interrupt enable */
#define PPC4XX_TCR_ARE              0x00400000      /* auto reload enable */


/* PowerPC 4XX Timer status register bits */
#define PPC4XX_TSR_ENW              0x80000000      /* enable next watchdog */
#define PPC4XX_TSR_WIS              0x40000000      /* watchdog interrupt status */
#define PPC4XX_TSR_WRS_MASK         0x30000000      /* watchdog reset status */
#define PPC4XX_TSR_PIS              0x08000000      /* PIT interrupt status */
#define PPC4XX_TSR_FIS              0x04000000      /* FIT interrupt status */


/* instruction decoding masks */
#define M_LI                0x03fffffc
#define M_AA                0x00000002
#define M_LK                0x00000001
#define M_BO                0x03e00000
#define M_BI                0x001f0000
#define M_BD                0x0000fffc
#define M_RT                0x03e00000
#define M_RD                0x03e00000
#define M_RS                0x03e00000
#define M_RA                0x001f0000
#define M_RB                0x0000f800
#define M_CRFD              0x03800000
#define M_L                 0x00200000
#define M_TO                0x03e00000
#define M_D                 0x0000ffff
#define M_SIMM              0x0000ffff
#define M_UIMM              0x0000ffff
#define M_NB                0x0000f800
#define M_SR                0x000f0000
#define M_SH                0x0000f800
#define M_CRFS              0x001c0000
#define M_IMM               0x0000f000
#define M_CRBD              0x03e00000
#define M_RC                0x00000001
#define M_CRBA              0x001f0000
#define M_CRBB              0x0000f800
#define M_SPR               0x001FF800
#define M_TBR               0x001FF800
#define M_CRM               0x000FF000
#define M_DCR               0x001FF800
#define M_FM                0x01FE0000
#define M_OE                0x00000400
#define M_REGC              0x000007c0
#define M_MB                0x000007c0
#define M_ME                0x0000003e
#define M_XO                0x000007fe



/***************************************************************************
    HELPER MACROS
***************************************************************************/

/*
 * Field Defining Macros
 *
 * These macros generate instruction words with their associated fields filled
 * in with the passed value.
 */

#define D_OP(op)            (uint32_t)((op & 0x3f) << 26)
#define D_XO(xo)            (uint32_t)((xo & 0x3ff) << 1)
#define D_RT(r)             (uint32_t)((r & 0x1f) << (31 - 10))
#define D_RA(r)             (uint32_t)((r & 0x1f) << (31 - 15))
#define D_UIMM(u)           (uint32_t)(u & 0xffff)

/*
 * Macros to Get Field Values
 *
 * These macros return the values of fields in an opcode. They all return
 * unsigned values and do not perform any sign extensions.
 */

#define G_RT(op)            ((op & M_RT) >> (31 - 10))
#define G_RD(op)            ((op & M_RD) >> (31 - 10))
#define G_RS(op)            ((op & M_RS) >> (31 - 10))
#define G_RA(op)            ((op & M_RA) >> (31 - 15))
#define G_RB(op)            ((op & M_RB) >> (31 - 20))
#define G_SIMM(op)          (op & M_SIMM)
#define G_UIMM(op)          (op & M_UIMM)
#define G_LI(op)            ((op & M_LI) >> 2)
#define G_BO(op)            ((op & M_BO) >> (31 - 10))
#define G_BI(op)            ((op & M_BI) >> (31 - 15))
#define G_BD(op)            ((op & M_BD) >> 2)
#define G_CRFD(op)          ((op & M_CRFD) >> (31 - 8))
#define G_L(op)             ((op & M_L) >> (31 - 10))
#define G_CRBD(op)          ((op & M_CRBD) >> (31 - 10))
#define G_CRBA(op)          ((op & M_CRBA) >> (31 - 15))
#define G_CRBB(op)          ((op & M_CRBB) >> (31 - 20))
#define G_REGC(op)          ((op & M_REGC) >> (31 - 25))
#define G_D(op)             (op & M_D)
#define G_NB(op)            ((op & M_NB) >> (31 - 20))
#define G_CRFS(op)          ((op & M_CRFS) >> (31 - 13))
#define G_SPR(op)           ((op & M_SPR) >> (31 - 20))
#define G_TBR(op)           ((op & M_TBR) >> (31 - 20))
#define G_DCR(op)           ((op & M_DCR) >> (31 - 20))
#define G_SR(op)            ((op & M_SR) >> (31 - 15))
#define G_CRM(op)           ((op & M_CRM) >> (31 - 19))
#define G_FM(op)            ((op & M_FM) >> (31 - 14))
#define G_IMM(op)           ((op & M_IMM) >> (31 - 19))
#define G_SH(op)            ((op & M_SH) >> (31 - 20))
#define G_MB(op)            ((op & M_MB) >> (31 - 25))
#define G_ME(op)            ((op & M_ME) >> 1)
#define G_TO(op)            ((op & M_TO) >> (31 - 10))
#define G_XO(op)            ((op & M_XO) >> (31 - 30))

extern offs_t ppc_dasm_one(std::ostream &stream, uint32_t pc, uint32_t op);



#endif /* __PPCCOM_H__ */
