FreeBSD/Linux Kernel Cross Reference
sys/arm/include/armreg.h

     /*      $NetBSD: armreg.h,v 1.37 2007/01/06 00:50:54 christos Exp $     */
     
     /*-
      * Copyright (c) 1998, 2001 Ben Harris
      * Copyright (c) 1994-1996 Mark Brinicombe.
      * Copyright (c) 1994 Brini.
      * All rights reserved.
      *
      * This code is derived from software written for Brini by Mark Brinicombe
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Brini.
     * 4. The name of the company nor the name of the author may be used to
     *    endorse or promote products derived from this software without specific
     *    prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/10.0/sys/arm/include/armreg.h 253857 2013-08-01 10:06:19Z ganbold $
     */
    
    #ifndef MACHINE_ARMREG_H
    #define MACHINE_ARMREG_H
    
    #define INSN_SIZE       4
    #define INSN_COND_MASK  0xf0000000      /* Condition mask */
    #define PSR_MODE        0x0000001f      /* mode mask */
    #define PSR_USR26_MODE  0x00000000
    #define PSR_FIQ26_MODE  0x00000001
    #define PSR_IRQ26_MODE  0x00000002
    #define PSR_SVC26_MODE  0x00000003
    #define PSR_USR32_MODE  0x00000010
    #define PSR_FIQ32_MODE  0x00000011
    #define PSR_IRQ32_MODE  0x00000012
    #define PSR_SVC32_MODE  0x00000013
    #define PSR_ABT32_MODE  0x00000017
    #define PSR_UND32_MODE  0x0000001b
    #define PSR_SYS32_MODE  0x0000001f
    #define PSR_32_MODE     0x00000010
    #define PSR_FLAGS       0xf0000000    /* flags */
    
    #define PSR_C_bit (1 << 29)       /* carry */
    
    /* The high-order byte is always the implementor */
    #define CPU_ID_IMPLEMENTOR_MASK 0xff000000
    #define CPU_ID_ARM_LTD          0x41000000 /* 'A' */
    #define CPU_ID_DEC              0x44000000 /* 'D' */
    #define CPU_ID_INTEL            0x69000000 /* 'i' */
    #define CPU_ID_TI               0x54000000 /* 'T' */
    #define CPU_ID_FARADAY          0x66000000 /* 'f' */
    
    /* How to decide what format the CPUID is in. */
    #define CPU_ID_ISOLD(x)         (((x) & 0x0000f000) == 0x00000000)
    #define CPU_ID_IS7(x)           (((x) & 0x0000f000) == 0x00007000)
    #define CPU_ID_ISNEW(x)         (!CPU_ID_ISOLD(x) && !CPU_ID_IS7(x))
    
    /* On ARM3 and ARM6, this byte holds the foundry ID. */
    #define CPU_ID_FOUNDRY_MASK     0x00ff0000
    #define CPU_ID_FOUNDRY_VLSI     0x00560000
    
    /* On ARM7 it holds the architecture and variant (sub-model) */
    #define CPU_ID_7ARCH_MASK       0x00800000
    #define CPU_ID_7ARCH_V3         0x00000000
    #define CPU_ID_7ARCH_V4T        0x00800000
    #define CPU_ID_7VARIANT_MASK    0x007f0000
    
    /* On more recent ARMs, it does the same, but in a different format */
    #define CPU_ID_ARCH_MASK        0x000f0000
    #define CPU_ID_ARCH_V3          0x00000000
    #define CPU_ID_ARCH_V4          0x00010000
    #define CPU_ID_ARCH_V4T         0x00020000
    #define CPU_ID_ARCH_V5          0x00030000
    #define CPU_ID_ARCH_V5T         0x00040000
    #define CPU_ID_ARCH_V5TE        0x00050000
    #define CPU_ID_ARCH_V5TEJ       0x00060000
    #define CPU_ID_ARCH_V6          0x00070000
    #define CPU_ID_CPUID_SCHEME     0x000f0000
    #define CPU_ID_VARIANT_MASK     0x00f00000
    
    /* Next three nybbles are part number */
   #define CPU_ID_PARTNO_MASK      0x0000fff0
   
   /* Intel XScale has sub fields in part number */
   #define CPU_ID_XSCALE_COREGEN_MASK      0x0000e000 /* core generation */
   #define CPU_ID_XSCALE_COREREV_MASK      0x00001c00 /* core revision */
   #define CPU_ID_XSCALE_PRODUCT_MASK      0x000003f0 /* product number */
   
   /* And finally, the revision number. */
   #define CPU_ID_REVISION_MASK    0x0000000f
   
   /* Individual CPUs are probably best IDed by everything but the revision. */
   #define CPU_ID_CPU_MASK         0xfffffff0
   
   /* Fake CPU IDs for ARMs without CP15 */
   #define CPU_ID_ARM2             0x41560200
   #define CPU_ID_ARM250           0x41560250
   
   /* Pre-ARM7 CPUs -- [15:12] == 0 */
   #define CPU_ID_ARM3             0x41560300
   #define CPU_ID_ARM600           0x41560600
   #define CPU_ID_ARM610           0x41560610
   #define CPU_ID_ARM620           0x41560620
   
   /* ARM7 CPUs -- [15:12] == 7 */
   #define CPU_ID_ARM700           0x41007000 /* XXX This is a guess. */
   #define CPU_ID_ARM710           0x41007100
   #define CPU_ID_ARM7500          0x41027100
   #define CPU_ID_ARM710A          0x41047100 /* inc ARM7100 */
   #define CPU_ID_ARM7500FE        0x41077100
   #define CPU_ID_ARM710T          0x41807100
   #define CPU_ID_ARM720T          0x41807200
   #define CPU_ID_ARM740T8K        0x41807400 /* XXX no MMU, 8KB cache */
   #define CPU_ID_ARM740T4K        0x41817400 /* XXX no MMU, 4KB cache */
   
   /* Post-ARM7 CPUs */
   #define CPU_ID_ARM810           0x41018100
   #define CPU_ID_ARM920T          0x41129200
   #define CPU_ID_ARM920T_ALT      0x41009200
   #define CPU_ID_ARM922T          0x41029220
   #define CPU_ID_ARM926EJS        0x41069260
   #define CPU_ID_ARM940T          0x41029400 /* XXX no MMU */
   #define CPU_ID_ARM946ES         0x41049460 /* XXX no MMU */
   #define CPU_ID_ARM966ES         0x41049660 /* XXX no MMU */
   #define CPU_ID_ARM966ESR1       0x41059660 /* XXX no MMU */
   #define CPU_ID_ARM1020E         0x4115a200 /* (AKA arm10 rev 1) */
   #define CPU_ID_ARM1022ES        0x4105a220
   #define CPU_ID_ARM1026EJS       0x4106a260
   #define CPU_ID_ARM1136JS        0x4107b360
   #define CPU_ID_ARM1136JSR1      0x4117b360
   #define CPU_ID_ARM1176JZS       0x410fb760
   #define CPU_ID_CORTEXA7         0x410fc070
   #define CPU_ID_CORTEXA8R1       0x411fc080
   #define CPU_ID_CORTEXA8R2       0x412fc080
   #define CPU_ID_CORTEXA8R3       0x413fc080
   #define CPU_ID_CORTEXA9R1       0x411fc090
   #define CPU_ID_CORTEXA9R2       0x412fc090
   #define CPU_ID_CORTEXA9R3       0x413fc090
   #define CPU_ID_CORTEXA15        0x410fc0f0
   #define CPU_ID_SA110            0x4401a100
   #define CPU_ID_SA1100           0x4401a110
   #define CPU_ID_TI925T           0x54029250
   #define CPU_ID_MV88FR131        0x56251310 /* Marvell Feroceon 88FR131 Core */
   #define CPU_ID_MV88FR331        0x56153310 /* Marvell Feroceon 88FR331 Core */
   #define CPU_ID_MV88FR571_VD     0x56155710 /* Marvell Feroceon 88FR571-VD Core (ID from datasheet) */
   
   /*
    * LokiPlus core has also ID set to 0x41159260 and this define cause execution of unsupported
    * L2-cache instructions so need to disable it. 0x41159260 is a generic ARM926E-S ID.
    */
   #ifdef SOC_MV_LOKIPLUS
   #define CPU_ID_MV88FR571_41     0x00000000
   #else
   #define CPU_ID_MV88FR571_41     0x41159260 /* Marvell Feroceon 88FR571-VD Core (actual ID from CPU reg) */
   #endif
   
   #define CPU_ID_MV88SV581X_V6            0x560F5810 /* Marvell Sheeva 88SV581x v6 Core */
   #define CPU_ID_MV88SV581X_V7            0x561F5810 /* Marvell Sheeva 88SV581x v7 Core */
   #define CPU_ID_MV88SV584X_V6            0x561F5840 /* Marvell Sheeva 88SV584x v6 Core */
   #define CPU_ID_MV88SV584X_V7            0x562F5840 /* Marvell Sheeva 88SV584x v7 Core */
   /* Marvell's CPUIDs with ARM ID in implementor field */
   #define CPU_ID_ARM_88SV581X_V6          0x410fb760 /* Marvell Sheeva 88SV581x v6 Core */
   #define CPU_ID_ARM_88SV581X_V7          0x413FC080 /* Marvell Sheeva 88SV581x v7 Core */
   #define CPU_ID_ARM_88SV584X_V6          0x410FB020 /* Marvell Sheeva 88SV584x v6 Core */
   
   #define CPU_ID_FA526            0x66015260
   #define CPU_ID_FA626TE          0x66056260
   #define CPU_ID_SA1110           0x6901b110
   #define CPU_ID_IXP1200          0x6901c120
   #define CPU_ID_80200            0x69052000
   #define CPU_ID_PXA250           0x69052100 /* sans core revision */
   #define CPU_ID_PXA210           0x69052120
   #define CPU_ID_PXA250A          0x69052100 /* 1st version Core */
   #define CPU_ID_PXA210A          0x69052120 /* 1st version Core */
   #define CPU_ID_PXA250B          0x69052900 /* 3rd version Core */
   #define CPU_ID_PXA210B          0x69052920 /* 3rd version Core */
   #define CPU_ID_PXA250C          0x69052d00 /* 4th version Core */
   #define CPU_ID_PXA210C          0x69052d20 /* 4th version Core */
   #define CPU_ID_PXA27X           0x69054110
   #define CPU_ID_80321_400        0x69052420
   #define CPU_ID_80321_600        0x69052430
   #define CPU_ID_80321_400_B0     0x69052c20
   #define CPU_ID_80321_600_B0     0x69052c30
   #define CPU_ID_80219_400        0x69052e20 /* A0 stepping/revision. */
   #define CPU_ID_80219_600        0x69052e30 /* A0 stepping/revision. */
   #define CPU_ID_81342            0x69056810
   #define CPU_ID_IXP425           0x690541c0
   #define CPU_ID_IXP425_533       0x690541c0
   #define CPU_ID_IXP425_400       0x690541d0
   #define CPU_ID_IXP425_266       0x690541f0
   #define CPU_ID_IXP435           0x69054040
   #define CPU_ID_IXP465           0x69054200
   
   /* ARM3-specific coprocessor 15 registers */
   #define ARM3_CP15_FLUSH         1
   #define ARM3_CP15_CONTROL       2
   #define ARM3_CP15_CACHEABLE     3
   #define ARM3_CP15_UPDATEABLE    4
   #define ARM3_CP15_DISRUPTIVE    5       
   
   /* ARM3 Control register bits */
   #define ARM3_CTL_CACHE_ON       0x00000001
   #define ARM3_CTL_SHARED         0x00000002
   #define ARM3_CTL_MONITOR        0x00000004
   
   /* CPUID registers */
   #define ARM_PFR0_ARM_ISA_MASK   0x0000000f
   
   #define ARM_PFR0_THUMB_MASK     0x000000f0
   #define ARM_PFR0_THUMB          0x10
   #define ARM_PFR0_THUMB2         0x30
   
   #define ARM_PFR0_JAZELLE_MASK   0x00000f00
   #define ARM_PFR0_THUMBEE_MASK   0x0000f000
   
   #define ARM_PFR1_ARMV4_MASK     0x0000000f
   #define ARM_PFR1_SEC_EXT_MASK   0x000000f0
   #define ARM_PFR1_MICROCTRL_MASK 0x00000f00
   
   /*
    * Post-ARM3 CP15 registers:
    *
    *      1       Control register
    *
    *      2       Translation Table Base
    *
    *      3       Domain Access Control
    *
    *      4       Reserved
    *
    *      5       Fault Status
    *
    *      6       Fault Address
    *
    *      7       Cache/write-buffer Control
    *
    *      8       TLB Control
    *
    *      9       Cache Lockdown
    *
    *      10      TLB Lockdown
    *
    *      11      Reserved
    *
    *      12      Reserved
    *
    *      13      Process ID (for FCSE)
    *
    *      14      Reserved
    *
    *      15      Implementation Dependent
    */
   
   /* Some of the definitions below need cleaning up for V3/V4 architectures */
   
   /* CPU control register (CP15 register 1) */
   #define CPU_CONTROL_MMU_ENABLE  0x00000001 /* M: MMU/Protection unit enable */
   #define CPU_CONTROL_AFLT_ENABLE 0x00000002 /* A: Alignment fault enable */
   #define CPU_CONTROL_DC_ENABLE   0x00000004 /* C: IDC/DC enable */
   #define CPU_CONTROL_WBUF_ENABLE 0x00000008 /* W: Write buffer enable */
   #define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
   #define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
   #define CPU_CONTROL_LABT_ENABLE 0x00000040 /* L: Late abort enable */
   #define CPU_CONTROL_BEND_ENABLE 0x00000080 /* B: Big-endian mode */
   #define CPU_CONTROL_SYST_ENABLE 0x00000100 /* S: System protection bit */
   #define CPU_CONTROL_ROM_ENABLE  0x00000200 /* R: ROM protection bit */
   #define CPU_CONTROL_CPCLK       0x00000400 /* F: Implementation defined */
   #define CPU_CONTROL_BPRD_ENABLE 0x00000800 /* Z: Branch prediction enable */
   #define CPU_CONTROL_IC_ENABLE   0x00001000 /* I: IC enable */
   #define CPU_CONTROL_VECRELOC    0x00002000 /* V: Vector relocation */
   #define CPU_CONTROL_ROUNDROBIN  0x00004000 /* RR: Predictable replacement */
   #define CPU_CONTROL_V4COMPAT    0x00008000 /* L4: ARMv4 compat LDR R15 etc */
   #define CPU_CONTROL_FI_ENABLE   0x00200000 /* FI: Low interrupt latency */
   #define CPU_CONTROL_UNAL_ENABLE 0x00400000 /* U: unaligned data access */
   #define CPU_CONTROL_V6_EXTPAGE  0x00800000 /* XP: ARMv6 extended page tables */
   #define CPU_CONTROL_L2_ENABLE   0x04000000 /* L2 Cache enabled */
   #define CPU_CONTROL_AF_ENABLE   0x20000000 /* Access Flag enable */
   
   #define CPU_CONTROL_IDC_ENABLE  CPU_CONTROL_DC_ENABLE
   
   /* ARM11x6 Auxiliary Control Register (CP15 register 1, opcode2 1) */
   #define ARM11X6_AUXCTL_RS       0x00000001 /* return stack */
   #define ARM11X6_AUXCTL_DB       0x00000002 /* dynamic branch prediction */
   #define ARM11X6_AUXCTL_SB       0x00000004 /* static branch prediction */
   #define ARM11X6_AUXCTL_TR       0x00000008 /* MicroTLB replacement strat. */
   #define ARM11X6_AUXCTL_EX       0x00000010 /* exclusive L1/L2 cache */
   #define ARM11X6_AUXCTL_RA       0x00000020 /* clean entire cache disable */
   #define ARM11X6_AUXCTL_RV       0x00000040 /* block transfer cache disable */
   #define ARM11X6_AUXCTL_CZ       0x00000080 /* restrict cache size */
   
   /* ARM1136 Auxiliary Control Register (CP15 register 1, opcode2 1) */
   #define ARM1136_AUXCTL_PFI      0x80000000 /* PFI: partial FI mode. */
                                              /* This is an undocumented flag
                                               * used to work around a cache bug
                                               * in r0 steppings. See errata
                                               * 364296.
                                               */
   /* ARM1176 Auxiliary Control Register (CP15 register 1, opcode2 1) */   
   #define ARM1176_AUXCTL_PHD      0x10000000 /* inst. prefetch halting disable */
   #define ARM1176_AUXCTL_BFD      0x20000000 /* branch folding disable */
   #define ARM1176_AUXCTL_FSD      0x40000000 /* force speculative ops disable */
   #define ARM1176_AUXCTL_FIO      0x80000000 /* low intr latency override */
   
   /* XScale Auxillary Control Register (CP15 register 1, opcode2 1) */
   #define XSCALE_AUXCTL_K         0x00000001 /* dis. write buffer coalescing */
   #define XSCALE_AUXCTL_P         0x00000002 /* ECC protect page table access */
   /* Note: XSCale core 3 uses those for LLR DCcahce attributes */
   #define XSCALE_AUXCTL_MD_WB_RA  0x00000000 /* mini-D$ wb, read-allocate */
   #define XSCALE_AUXCTL_MD_WB_RWA 0x00000010 /* mini-D$ wb, read/write-allocate */
   #define XSCALE_AUXCTL_MD_WT     0x00000020 /* mini-D$ wt, read-allocate */
   #define XSCALE_AUXCTL_MD_MASK   0x00000030
   
   /* Xscale Core 3 only */
   #define XSCALE_AUXCTL_LLR       0x00000400 /* Enable L2 for LLR Cache */
   
   /* Marvell Extra Features Register (CP15 register 1, opcode2 0) */
   #define MV_DC_REPLACE_LOCK      0x80000000 /* Replace DCache Lock */
   #define MV_DC_STREAM_ENABLE     0x20000000 /* DCache Streaming Switch */
   #define MV_WA_ENABLE            0x10000000 /* Enable Write Allocate */
   #define MV_L2_PREFETCH_DISABLE  0x01000000 /* L2 Cache Prefetch Disable */
   #define MV_L2_INV_EVICT_ERR     0x00800000 /* L2 Invalidates Uncorrectable Error Line Eviction */
   #define MV_L2_ENABLE            0x00400000 /* L2 Cache enable */
   #define MV_IC_REPLACE_LOCK      0x00080000 /* Replace ICache Lock */
   #define MV_BGH_ENABLE           0x00040000 /* Branch Global History Register Enable */
   #define MV_BTB_DISABLE          0x00020000 /* Branch Target Buffer Disable */
   #define MV_L1_PARERR_ENABLE     0x00010000 /* L1 Parity Error Enable */
   
   /* Cache type register definitions */
   #define CPU_CT_ISIZE(x)         ((x) & 0xfff)           /* I$ info */
   #define CPU_CT_DSIZE(x)         (((x) >> 12) & 0xfff)   /* D$ info */
   #define CPU_CT_S                (1U << 24)              /* split cache */
   #define CPU_CT_CTYPE(x)         (((x) >> 25) & 0xf)     /* cache type */
   #define CPU_CT_FORMAT(x)        ((x) >> 29)
   
   #define CPU_CT_CTYPE_WT         0       /* write-through */
   #define CPU_CT_CTYPE_WB1        1       /* write-back, clean w/ read */
   #define CPU_CT_CTYPE_WB2        2       /* w/b, clean w/ cp15,7 */
   #define CPU_CT_CTYPE_WB6        6       /* w/b, cp15,7, lockdown fmt A */
   #define CPU_CT_CTYPE_WB7        7       /* w/b, cp15,7, lockdown fmt B */
   
   #define CPU_CT_xSIZE_LEN(x)     ((x) & 0x3)             /* line size */
   #define CPU_CT_xSIZE_M          (1U << 2)               /* multiplier */
   #define CPU_CT_xSIZE_ASSOC(x)   (((x) >> 3) & 0x7)      /* associativity */
   #define CPU_CT_xSIZE_SIZE(x)    (((x) >> 6) & 0x7)      /* size */
   
   #define CPU_CT_ARMV7            0x4
   /* ARM v7 Cache type definitions */
   #define CPUV7_CT_CTYPE_WT       (1 << 31)
   #define CPUV7_CT_CTYPE_WB       (1 << 30)
   #define CPUV7_CT_CTYPE_RA       (1 << 29)
   #define CPUV7_CT_CTYPE_WA       (1 << 28)
   
   #define CPUV7_CT_xSIZE_LEN(x)   ((x) & 0x7)             /* line size */
   #define CPUV7_CT_xSIZE_ASSOC(x) (((x) >> 3) & 0x3ff)    /* associativity */
   #define CPUV7_CT_xSIZE_SET(x)   (((x) >> 13) & 0x7fff)  /* num sets */
   
   #define CPU_CLIDR_CTYPE(reg,x)  (((reg) >> ((x) * 3)) & 0x7)
   #define CPU_CLIDR_LOUIS(reg)    (((reg) >> 21) & 0x7)
   #define CPU_CLIDR_LOC(reg)      (((reg) >> 24) & 0x7)
   #define CPU_CLIDR_LOUU(reg)     (((reg) >> 27) & 0x7)
   
   #define CACHE_ICACHE            1
   #define CACHE_DCACHE            2
   #define CACHE_SEP_CACHE         3
   #define CACHE_UNI_CACHE         4
   
   /* Fault status register definitions */
   
   #define FAULT_TYPE_MASK 0x0f
   #define FAULT_USER      0x10
   
   #define FAULT_WRTBUF_0  0x00 /* Vector Exception */
   #define FAULT_WRTBUF_1  0x02 /* Terminal Exception */
   #define FAULT_BUSERR_0  0x04 /* External Abort on Linefetch -- Section */
   #define FAULT_BUSERR_1  0x06 /* External Abort on Linefetch -- Page */
   #define FAULT_BUSERR_2  0x08 /* External Abort on Non-linefetch -- Section */
   #define FAULT_BUSERR_3  0x0a /* External Abort on Non-linefetch -- Page */
   #define FAULT_BUSTRNL1  0x0c /* External abort on Translation -- Level 1 */
   #define FAULT_BUSTRNL2  0x0e /* External abort on Translation -- Level 2 */
   #define FAULT_ALIGN_0   0x01 /* Alignment */
   #define FAULT_ALIGN_1   0x03 /* Alignment */
   #define FAULT_TRANS_S   0x05 /* Translation -- Section */
   #define FAULT_TRANS_F   0x06 /* Translation -- Flag */
   #define FAULT_TRANS_P   0x07 /* Translation -- Page */
   #define FAULT_DOMAIN_S  0x09 /* Domain -- Section */
   #define FAULT_DOMAIN_P  0x0b /* Domain -- Page */
   #define FAULT_PERM_S    0x0d /* Permission -- Section */
   #define FAULT_PERM_P    0x0f /* Permission -- Page */
   
   #define FAULT_IMPRECISE 0x400   /* Imprecise exception (XSCALE) */
   
   /*
    * Address of the vector page, low and high versions.
    */
   #ifndef __ASSEMBLER__
   #define ARM_VECTORS_LOW         0x00000000U
   #define ARM_VECTORS_HIGH        0xffff0000U
   #else
   #define ARM_VECTORS_LOW         0
   #define ARM_VECTORS_HIGH        0xffff0000
   #endif
   
   /*
    * ARM Instructions
    *
    *       3 3 2 2 2
    *       1 0 9 8 7                                                     0
    *      +-------+-------------------------------------------------------+
    *      | cond  |              instruction dependant                    |
    *      |c c c c|                                                       |
    *      +-------+-------------------------------------------------------+
    */
   
   #define INSN_SIZE               4               /* Always 4 bytes */
   #define INSN_COND_MASK          0xf0000000      /* Condition mask */
   #define INSN_COND_AL            0xe0000000      /* Always condition */
   
   #define THUMB_INSN_SIZE         2               /* Some are 4 bytes.  */
   
   #endif /* !MACHINE_ARMREG_H */

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