Subversion Repositories openrisc_2011-10-31

/* ARM assembler/disassembler support.

   Copyright 2004 Free Software Foundation, Inc.

   This file is part of GDB and GAS.

   GDB and GAS are 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 1, or (at

   your option) any later version.

   GDB and GAS are 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 GDB or GAS; see the file COPYING.  If not, write to the

   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA

   02110-1301, USA.  */

/* The following bitmasks control CPU extensions:  */

#define ARM_EXT_V1       0x00000001     /* All processors (core set).  */

#define ARM_EXT_V2       0x00000002     /* Multiply instructions.  */

#define ARM_EXT_V2S      0x00000004     /* SWP instructions.       */

#define ARM_EXT_V3       0x00000008     /* MSR MRS.                */

#define ARM_EXT_V3M      0x00000010     /* Allow long multiplies.  */

#define ARM_EXT_V4       0x00000020     /* Allow half word loads.  */

#define ARM_EXT_V4T      0x00000040     /* Thumb.                  */

#define ARM_EXT_V5       0x00000080     /* Allow CLZ, etc.         */

#define ARM_EXT_V5T      0x00000100     /* Improved interworking.  */

#define ARM_EXT_V5ExP    0x00000200     /* DSP core set.           */

#define ARM_EXT_V5E      0x00000400     /* DSP Double transfers.   */

#define ARM_EXT_V5J      0x00000800     /* Jazelle extension.      */

#define ARM_EXT_V6       0x00001000     /* ARM V6.                 */

#define ARM_EXT_V6K      0x00002000     /* ARM V6K.                */

#define ARM_EXT_V6Z      0x00004000     /* ARM V6Z.                */

#define ARM_EXT_V6T2     0x00008000     /* Thumb-2.                */

#define ARM_EXT_DIV      0x00010000     /* Integer division.       */

/* The 'M' in Arm V7M stands for Microcontroller.

   On earlier architecture variants it stands for Multiply.  */

#define ARM_EXT_V5E_NOTM 0x00020000     /* Arm V5E but not Arm V7M. */

#define ARM_EXT_V6_NOTM  0x00040000     /* Arm V6 but not Arm V7M. */

#define ARM_EXT_V7       0x00080000     /* Arm V7.                 */

#define ARM_EXT_V7A      0x00100000     /* Arm V7A.                */

#define ARM_EXT_V7R      0x00200000     /* Arm V7R.                */

#define ARM_EXT_V7M      0x00400000     /* Arm V7M.                */

#define ARM_EXT_V6M      0x00800000     /* ARM V6M.                 */

#define ARM_EXT_BARRIER  0x01000000     /* DSB/DMB/ISB.             */

#define ARM_EXT_THUMB_MSR 0x02000000    /* Thumb MSR/MRS.           */

#define ARM_EXT_V6_DSP 0x04000000       /* ARM v6 (DSP-related),

                                           not in v7-M.  */

/* Co-processor space extensions.  */

#define ARM_CEXT_XSCALE   0x00000001    /* Allow MIA etc.          */

#define ARM_CEXT_MAVERICK 0x00000002    /* Use Cirrus/DSP coprocessor.  */

#define ARM_CEXT_IWMMXT   0x00000004    /* Intel Wireless MMX technology coprocessor.   */

#define ARM_CEXT_IWMMXT2  0x00000008    /* Intel Wireless MMX technology coprocessor version 2.   */

#define FPU_ENDIAN_PURE  0x80000000     /* Pure-endian doubles.       */

#define FPU_ENDIAN_BIG   0              /* Double words-big-endian.   */

#define FPU_FPA_EXT_V1   0x40000000     /* Base FPA instruction set.  */

#define FPU_FPA_EXT_V2   0x20000000     /* LFM/SFM.                   */

#define FPU_MAVERICK     0x10000000     /* Cirrus Maverick.           */

#define FPU_VFP_EXT_V1xD 0x08000000     /* Base VFP instruction set.  */

#define FPU_VFP_EXT_V1   0x04000000     /* Double-precision insns.    */

#define FPU_VFP_EXT_V2   0x02000000     /* ARM10E VFPr1.              */

#define FPU_VFP_EXT_V3xD 0x01000000     /* VFPv3 single-precision.    */

#define FPU_VFP_EXT_V3   0x00800000     /* VFPv3 double-precision.    */

#define FPU_NEON_EXT_V1  0x00400000     /* Neon (SIMD) insns.         */

#define FPU_VFP_EXT_D32  0x00200000     /* Registers D16-D31.         */

#define FPU_VFP_EXT_FP16 0x00100000     /* Half-precision extensions. */

#define FPU_NEON_EXT_FMA 0x00080000     /* Neon fused multiply-add    */

#define FPU_VFP_EXT_FMA  0x00040000     /* VFP fused multiply-add     */

/* Architectures are the sum of the base and extensions.  The ARM ARM (rev E)

   defines the following: ARMv3, ARMv3M, ARMv4xM, ARMv4, ARMv4TxM, ARMv4T,

   ARMv5xM, ARMv5, ARMv5TxM, ARMv5T, ARMv5TExP, ARMv5TE.  To these we add

   three more to cover cores prior to ARM6.  Finally, there are cores which

   implement further extensions in the co-processor space.  */

#define ARM_AEXT_V1                       ARM_EXT_V1

#define ARM_AEXT_V2     (ARM_AEXT_V1    | ARM_EXT_V2)

#define ARM_AEXT_V2S    (ARM_AEXT_V2    | ARM_EXT_V2S)

#define ARM_AEXT_V3     (ARM_AEXT_V2S   | ARM_EXT_V3)

#define ARM_AEXT_V3M    (ARM_AEXT_V3    | ARM_EXT_V3M)

#define ARM_AEXT_V4xM   (ARM_AEXT_V3    | ARM_EXT_V4)

#define ARM_AEXT_V4     (ARM_AEXT_V3M   | ARM_EXT_V4)

#define ARM_AEXT_V4TxM  (ARM_AEXT_V4xM  | ARM_EXT_V4T)

#define ARM_AEXT_V4T    (ARM_AEXT_V4    | ARM_EXT_V4T)

#define ARM_AEXT_V5xM   (ARM_AEXT_V4xM  | ARM_EXT_V5)

#define ARM_AEXT_V5     (ARM_AEXT_V4    | ARM_EXT_V5)

#define ARM_AEXT_V5TxM  (ARM_AEXT_V5xM  | ARM_EXT_V4T | ARM_EXT_V5T)

#define ARM_AEXT_V5T    (ARM_AEXT_V5    | ARM_EXT_V4T | ARM_EXT_V5T)

#define ARM_AEXT_V5TExP (ARM_AEXT_V5T   | ARM_EXT_V5ExP)

#define ARM_AEXT_V5TE   (ARM_AEXT_V5TExP | ARM_EXT_V5E)

#define ARM_AEXT_V5TEJ  (ARM_AEXT_V5TE  | ARM_EXT_V5J)

#define ARM_AEXT_V6     (ARM_AEXT_V5TEJ | ARM_EXT_V6)

#define ARM_AEXT_V6K    (ARM_AEXT_V6    | ARM_EXT_V6K)

#define ARM_AEXT_V6Z    (ARM_AEXT_V6    | ARM_EXT_V6Z)

#define ARM_AEXT_V6ZK   (ARM_AEXT_V6    | ARM_EXT_V6K | ARM_EXT_V6Z)

#define ARM_AEXT_V6T2   (ARM_AEXT_V6 \

    | ARM_EXT_V6T2 | ARM_EXT_V6_NOTM | ARM_EXT_THUMB_MSR \

    | ARM_EXT_V6_DSP )

#define ARM_AEXT_V6KT2  (ARM_AEXT_V6T2 | ARM_EXT_V6K)

#define ARM_AEXT_V6ZT2  (ARM_AEXT_V6T2 | ARM_EXT_V6Z)

#define ARM_AEXT_V6ZKT2 (ARM_AEXT_V6T2 | ARM_EXT_V6K | ARM_EXT_V6Z)

#define ARM_AEXT_V7_ARM (ARM_AEXT_V6ZKT2 | ARM_EXT_V7 | ARM_EXT_BARRIER)

#define ARM_AEXT_V7A    (ARM_AEXT_V7_ARM | ARM_EXT_V7A)

#define ARM_AEXT_V7R    (ARM_AEXT_V7_ARM | ARM_EXT_V7R | ARM_EXT_DIV)

#define ARM_AEXT_NOTM \

  (ARM_AEXT_V4 | ARM_EXT_V5ExP | ARM_EXT_V5J | ARM_EXT_V6_NOTM \

   | ARM_EXT_V6_DSP )

#define ARM_AEXT_V6M \

  ((ARM_AEXT_V6K | ARM_EXT_BARRIER | ARM_EXT_V6M | ARM_EXT_THUMB_MSR) \

   & ~(ARM_AEXT_NOTM))

#define ARM_AEXT_V7M \

  ((ARM_AEXT_V7_ARM | ARM_EXT_V6M | ARM_EXT_V7M | ARM_EXT_DIV) \

   & ~(ARM_AEXT_NOTM))

#define ARM_AEXT_V7 (ARM_AEXT_V7A & ARM_AEXT_V7R & ARM_AEXT_V7M)

#define ARM_AEXT_V7EM \

  (ARM_AEXT_V7M | ARM_EXT_V5ExP | ARM_EXT_V6_DSP)

/* Processors with specific extensions in the co-processor space.  */

#define ARM_ARCH_XSCALE ARM_FEATURE (ARM_AEXT_V5TE, ARM_CEXT_XSCALE)

#define ARM_ARCH_IWMMXT \

 ARM_FEATURE (ARM_AEXT_V5TE, ARM_CEXT_XSCALE | ARM_CEXT_IWMMXT)

#define ARM_ARCH_IWMMXT2        \

 ARM_FEATURE (ARM_AEXT_V5TE, ARM_CEXT_XSCALE | ARM_CEXT_IWMMXT | ARM_CEXT_IWMMXT2)

#define FPU_VFP_V1xD    (FPU_VFP_EXT_V1xD | FPU_ENDIAN_PURE)

#define FPU_VFP_V1      (FPU_VFP_V1xD | FPU_VFP_EXT_V1)

#define FPU_VFP_V2      (FPU_VFP_V1 | FPU_VFP_EXT_V2)

#define FPU_VFP_V3D16   (FPU_VFP_V2 | FPU_VFP_EXT_V3xD | FPU_VFP_EXT_V3)

#define FPU_VFP_V3      (FPU_VFP_V3D16 | FPU_VFP_EXT_D32)

#define FPU_VFP_V3xD    (FPU_VFP_V1xD | FPU_VFP_EXT_V2 | FPU_VFP_EXT_V3xD)

#define FPU_VFP_V4D16   (FPU_VFP_V3D16 | FPU_VFP_EXT_FP16 | FPU_VFP_EXT_FMA)

#define FPU_VFP_V4      (FPU_VFP_V3 | FPU_VFP_EXT_FP16 | FPU_VFP_EXT_FMA)

#define FPU_VFP_V4_SP_D16 (FPU_VFP_V3xD | FPU_VFP_EXT_FP16 | FPU_VFP_EXT_FMA)

#define FPU_VFP_HARD    (FPU_VFP_EXT_V1xD | FPU_VFP_EXT_V1 | FPU_VFP_EXT_V2 \

                         | FPU_VFP_EXT_V3xD | FPU_VFP_EXT_FMA | FPU_NEON_EXT_FMA \

                         | FPU_VFP_EXT_V3 | FPU_NEON_EXT_V1 | FPU_VFP_EXT_D32)

#define FPU_FPA         (FPU_FPA_EXT_V1 | FPU_FPA_EXT_V2)

/* Deprecated */

#define FPU_ARCH_VFP    ARM_FEATURE (0, FPU_ENDIAN_PURE)

#define FPU_ARCH_FPE    ARM_FEATURE (0, FPU_FPA_EXT_V1)

#define FPU_ARCH_FPA    ARM_FEATURE (0, FPU_FPA)

#define FPU_ARCH_VFP_V1xD ARM_FEATURE (0, FPU_VFP_V1xD)

#define FPU_ARCH_VFP_V1   ARM_FEATURE (0, FPU_VFP_V1)

#define FPU_ARCH_VFP_V2   ARM_FEATURE (0, FPU_VFP_V2)

#define FPU_ARCH_VFP_V3D16      ARM_FEATURE (0, FPU_VFP_V3D16)

#define FPU_ARCH_VFP_V3D16_FP16 \

  ARM_FEATURE (0, FPU_VFP_V3D16 | FPU_VFP_EXT_FP16)

#define FPU_ARCH_VFP_V3   ARM_FEATURE (0, FPU_VFP_V3)

#define FPU_ARCH_VFP_V3_FP16    ARM_FEATURE (0, FPU_VFP_V3 | FPU_VFP_EXT_FP16)

#define FPU_ARCH_VFP_V3xD       ARM_FEATURE (0, FPU_VFP_V3xD)

#define FPU_ARCH_VFP_V3xD_FP16  ARM_FEATURE (0, FPU_VFP_V3xD | FPU_VFP_EXT_FP16)

#define FPU_ARCH_NEON_V1  ARM_FEATURE (0, FPU_NEON_EXT_V1)

#define FPU_ARCH_VFP_V3_PLUS_NEON_V1 \

  ARM_FEATURE (0, FPU_VFP_V3 | FPU_NEON_EXT_V1)

#define FPU_ARCH_NEON_FP16 \

  ARM_FEATURE (0, FPU_VFP_V3 | FPU_NEON_EXT_V1 | FPU_VFP_EXT_FP16)

#define FPU_ARCH_VFP_HARD ARM_FEATURE (0, FPU_VFP_HARD)

#define FPU_ARCH_VFP_V4 ARM_FEATURE(0, FPU_VFP_V4)

#define FPU_ARCH_VFP_V4D16 ARM_FEATURE(0, FPU_VFP_V4D16)

#define FPU_ARCH_VFP_V4_SP_D16 ARM_FEATURE(0, FPU_VFP_V4_SP_D16)

#define FPU_ARCH_NEON_VFP_V4 \

  ARM_FEATURE(0, FPU_VFP_V4 | FPU_NEON_EXT_V1 | FPU_NEON_EXT_FMA)

#define FPU_ARCH_ENDIAN_PURE ARM_FEATURE (0, FPU_ENDIAN_PURE)

#define FPU_ARCH_MAVERICK ARM_FEATURE (0, FPU_MAVERICK)

#define ARM_ARCH_V1     ARM_FEATURE (ARM_AEXT_V1, 0)

#define ARM_ARCH_V2     ARM_FEATURE (ARM_AEXT_V2, 0)

#define ARM_ARCH_V2S    ARM_FEATURE (ARM_AEXT_V2S, 0)

#define ARM_ARCH_V3     ARM_FEATURE (ARM_AEXT_V3, 0)

#define ARM_ARCH_V3M    ARM_FEATURE (ARM_AEXT_V3M, 0)

#define ARM_ARCH_V4xM   ARM_FEATURE (ARM_AEXT_V4xM, 0)

#define ARM_ARCH_V4     ARM_FEATURE (ARM_AEXT_V4, 0)

#define ARM_ARCH_V4TxM  ARM_FEATURE (ARM_AEXT_V4TxM, 0)

#define ARM_ARCH_V4T    ARM_FEATURE (ARM_AEXT_V4T, 0)

#define ARM_ARCH_V5xM   ARM_FEATURE (ARM_AEXT_V5xM, 0)

#define ARM_ARCH_V5     ARM_FEATURE (ARM_AEXT_V5, 0)

#define ARM_ARCH_V5TxM  ARM_FEATURE (ARM_AEXT_V5TxM, 0)

#define ARM_ARCH_V5T    ARM_FEATURE (ARM_AEXT_V5T, 0)

#define ARM_ARCH_V5TExP ARM_FEATURE (ARM_AEXT_V5TExP, 0)

#define ARM_ARCH_V5TE   ARM_FEATURE (ARM_AEXT_V5TE, 0)

#define ARM_ARCH_V5TEJ  ARM_FEATURE (ARM_AEXT_V5TEJ, 0)

#define ARM_ARCH_V6     ARM_FEATURE (ARM_AEXT_V6, 0)

#define ARM_ARCH_V6K    ARM_FEATURE (ARM_AEXT_V6K, 0)

#define ARM_ARCH_V6Z    ARM_FEATURE (ARM_AEXT_V6Z, 0)

#define ARM_ARCH_V6ZK   ARM_FEATURE (ARM_AEXT_V6ZK, 0)

#define ARM_ARCH_V6T2   ARM_FEATURE (ARM_AEXT_V6T2, 0)

#define ARM_ARCH_V6KT2  ARM_FEATURE (ARM_AEXT_V6KT2, 0)

#define ARM_ARCH_V6ZT2  ARM_FEATURE (ARM_AEXT_V6ZT2, 0)

#define ARM_ARCH_V6ZKT2 ARM_FEATURE (ARM_AEXT_V6ZKT2, 0)

#define ARM_ARCH_V6M    ARM_FEATURE (ARM_AEXT_V6M, 0)

#define ARM_ARCH_V7     ARM_FEATURE (ARM_AEXT_V7, 0)

#define ARM_ARCH_V7A    ARM_FEATURE (ARM_AEXT_V7A, 0)

#define ARM_ARCH_V7R    ARM_FEATURE (ARM_AEXT_V7R, 0)

#define ARM_ARCH_V7M    ARM_FEATURE (ARM_AEXT_V7M, 0)

#define ARM_ARCH_V7EM   ARM_FEATURE (ARM_AEXT_V7EM, 0)

/* Some useful combinations:  */

#define ARM_ARCH_NONE   ARM_FEATURE (0, 0)

#define FPU_NONE        ARM_FEATURE (0, 0)

#define ARM_ANY         ARM_FEATURE (-1, 0)     /* Any basic core.  */

#define FPU_ANY_HARD    ARM_FEATURE (0, FPU_FPA | FPU_VFP_HARD | FPU_MAVERICK)

#define ARM_ARCH_THUMB2 ARM_FEATURE (ARM_EXT_V6T2 | ARM_EXT_V7 | ARM_EXT_V7A | ARM_EXT_V7R | ARM_EXT_V7M | ARM_EXT_DIV, 0)

/* There are too many feature bits to fit in a single word, so use a

   structure.  For simplicity we put all core features in one word and

   everything else in the other.  */

typedef struct

{

  unsigned long core;

  unsigned long coproc;

} arm_feature_set;

#define ARM_CPU_HAS_FEATURE(CPU,FEAT) \

  (((CPU).core & (FEAT).core) != 0 || ((CPU).coproc & (FEAT).coproc) != 0)

#define ARM_MERGE_FEATURE_SETS(TARG,F1,F2)      \

  do {                                          \

    (TARG).core = (F1).core | (F2).core;        \

    (TARG).coproc = (F1).coproc | (F2).coproc;  \

  } while (0)

#define ARM_CLEAR_FEATURE(TARG,F1,F2)           \

  do {                                          \

    (TARG).core = (F1).core &~ (F2).core;       \

    (TARG).coproc = (F1).coproc &~ (F2).coproc; \

  } while (0)

#define ARM_FEATURE(core, coproc) {(core), (coproc)}