target-xtensa: add dc232b core

This is Diamond 232L Standard Core Rev.B (LE), implemented through
linux/gdb overlay.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

2 files changed, 684 insertions, 0 deletions

diff --git a/target-xtensa/core-dc232b/core-isa.h b/target-xtensa/core-dc232b/core-isa.h
new file mode 100644
index 0000000000..69f1065574
--- /dev/null
+++ b/target-xtensa/core-dc232b/core-isa.h
@@ -0,0 +1,423 @@
+/*
+ * Xtensa processor core configuration information.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_CONFIGURATION_H
+#define _XTENSA_CORE_CONFIGURATION_H
+
+
+/****************************************************************************
+            Parameters Useful for Any Code, USER or PRIVILEGED
+ ****************************************************************************/
+
+/*
+ *  Note:  Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
+ *  configured, and a value of 0 otherwise.  These macros are always defined.
+ */
+
+
+/*----------------------------------------------------------------------
+                                ISA
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_BE                   0       /* big-endian byte ordering */
+#define XCHAL_HAVE_WINDOWED             1       /* windowed registers option */
+#define XCHAL_NUM_AREGS                 32      /* num of physical addr regs */
+#define XCHAL_NUM_AREGS_LOG2            5       /* log2(XCHAL_NUM_AREGS) */
+#define XCHAL_MAX_INSTRUCTION_SIZE      3       /* max instr bytes (3..8) */
+#define XCHAL_HAVE_DEBUG                1       /* debug option */
+#define XCHAL_HAVE_DENSITY              1       /* 16-bit instructions */
+#define XCHAL_HAVE_LOOPS                1       /* zero-overhead loops */
+#define XCHAL_HAVE_NSA                  1       /* NSA/NSAU instructions */
+#define XCHAL_HAVE_MINMAX               1       /* MIN/MAX instructions */
+#define XCHAL_HAVE_SEXT                 1       /* SEXT instruction */
+#define XCHAL_HAVE_CLAMPS               1       /* CLAMPS instruction */
+#define XCHAL_HAVE_MUL16                1       /* MUL16S/MUL16U instructions */
+#define XCHAL_HAVE_MUL32                1       /* MULL instruction */
+#define XCHAL_HAVE_MUL32_HIGH           0       /* MULUH/MULSH instructions */
+#define XCHAL_HAVE_DIV32                1       /* QUOS/QUOU/REMS/REMU insns */
+#define XCHAL_HAVE_L32R                 1       /* L32R instruction */
+#define XCHAL_HAVE_ABSOLUTE_LITERALS    1       /* non-PC-rel (extended) L32R */
+#define XCHAL_HAVE_CONST16              0       /* CONST16 instruction */
+#define XCHAL_HAVE_ADDX                 1       /* ADDX#/SUBX# instructions */
+#define XCHAL_HAVE_WIDE_BRANCHES        0       /* B*.W18 or B*.W15 instr's */
+#define XCHAL_HAVE_PREDICTED_BRANCHES   0       /* B[EQ/EQZ/NE/NEZ]T instr's */
+#define XCHAL_HAVE_CALL4AND12           1       /* (obsolete option) */
+#define XCHAL_HAVE_ABS                  1       /* ABS instruction */
+/*#define XCHAL_HAVE_POPC               0*/     /* POPC instruction */
+/*#define XCHAL_HAVE_CRC                0*/     /* CRC instruction */
+#define XCHAL_HAVE_RELEASE_SYNC         1       /* L32AI/S32RI instructions */
+#define XCHAL_HAVE_S32C1I               1       /* S32C1I instruction */
+#define XCHAL_HAVE_SPECULATION          0       /* speculation */
+#define XCHAL_HAVE_FULL_RESET           1       /* all regs/state reset */
+#define XCHAL_NUM_CONTEXTS              1       /* */
+#define XCHAL_NUM_MISC_REGS             2       /* num of scratch regs (0..4) */
+#define XCHAL_HAVE_TAP_MASTER           0       /* JTAG TAP control instr's */
+#define XCHAL_HAVE_PRID                 1       /* processor ID register */
+#define XCHAL_HAVE_THREADPTR            1       /* THREADPTR register */
+#define XCHAL_HAVE_BOOLEANS             0       /* boolean registers */
+#define XCHAL_HAVE_CP                   1       /* CPENABLE reg (coprocessor) */
+#define XCHAL_CP_MAXCFG                 8       /* max allowed cp id plus one */
+#define XCHAL_HAVE_MAC16                1       /* MAC16 package */
+#define XCHAL_HAVE_VECTORFPU2005        0       /* vector floating-point pkg */
+#define XCHAL_HAVE_FP                   0       /* floating point pkg */
+#define XCHAL_HAVE_VECTRA1              0       /* Vectra I  pkg */
+#define XCHAL_HAVE_VECTRALX             0       /* Vectra LX pkg */
+#define XCHAL_HAVE_HIFI2                0       /* HiFi2 Audio Engine pkg */
+
+
+/*----------------------------------------------------------------------
+                                MISC
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_WRITEBUFFER_ENTRIES   8       /* size of write buffer */
+#define XCHAL_INST_FETCH_WIDTH          4       /* instr-fetch width in bytes */
+#define XCHAL_DATA_WIDTH                4       /* data width in bytes */
+/*  In T1050, applies to selected core load and store instructions (see ISA): */
+#define XCHAL_UNALIGNED_LOAD_EXCEPTION  1       /* unaligned loads cause exc. */
+#define XCHAL_UNALIGNED_STORE_EXCEPTION 1       /* unaligned stores cause exc.*/
+
+#define XCHAL_SW_VERSION                701001  /* sw version of this header */
+
+#define XCHAL_CORE_ID                   "dc232b"        /* alphanum core name
+                                                   (CoreID) set in the Xtensa
+                                                   Processor Generator */
+
+#define XCHAL_CORE_DESCRIPTION          "Diamond 232L Standard Core Rev.B (LE)"
+#define XCHAL_BUILD_UNIQUE_ID           0x0000BEEF      /* 22-bit sw build ID */
+
+/*
+ *  These definitions describe the hardware targeted by this software.
+ */
+#define XCHAL_HW_CONFIGID0              0xC56307FE      /* ConfigID hi 32 bits*/
+#define XCHAL_HW_CONFIGID1              0x0D40BEEF      /* ConfigID lo 32 bits*/
+#define XCHAL_HW_VERSION_NAME           "LX2.1.1"       /* full version name */
+#define XCHAL_HW_VERSION_MAJOR          2210    /* major ver# of targeted hw */
+#define XCHAL_HW_VERSION_MINOR          1       /* minor ver# of targeted hw */
+#define XCHAL_HW_VERSION                221001  /* major*100+minor */
+#define XCHAL_HW_REL_LX2                1
+#define XCHAL_HW_REL_LX2_1              1
+#define XCHAL_HW_REL_LX2_1_1            1
+#define XCHAL_HW_CONFIGID_RELIABLE      1
+/*  If software targets a *range* of hardware versions, these are the bounds: */
+#define XCHAL_HW_MIN_VERSION_MAJOR      2210    /* major v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION_MINOR      1       /* minor v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION            221001  /* earliest targeted hw */
+#define XCHAL_HW_MAX_VERSION_MAJOR      2210    /* major v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION_MINOR      1       /* minor v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION            221001  /* latest targeted hw */
+
+
+/*----------------------------------------------------------------------
+                                CACHE
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_ICACHE_LINESIZE           32      /* I-cache line size in bytes */
+#define XCHAL_DCACHE_LINESIZE           32      /* D-cache line size in bytes */
+#define XCHAL_ICACHE_LINEWIDTH          5       /* log2(I line size in bytes) */
+#define XCHAL_DCACHE_LINEWIDTH          5       /* log2(D line size in bytes) */
+
+#define XCHAL_ICACHE_SIZE               16384   /* I-cache size in bytes or 0 */
+#define XCHAL_DCACHE_SIZE               16384   /* D-cache size in bytes or 0 */
+
+#define XCHAL_DCACHE_IS_WRITEBACK       1       /* writeback feature */
+
+
+
+
+/****************************************************************************
+    Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
+ ****************************************************************************/
+
+
+#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
+
+/*----------------------------------------------------------------------
+                                CACHE
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_PIF                  1       /* any outbound PIF present */
+
+/*  If present, cache size in bytes == (ways * 2^(linewidth + setwidth)).  */
+
+/*  Number of cache sets in log2(lines per way):  */
+#define XCHAL_ICACHE_SETWIDTH           7
+#define XCHAL_DCACHE_SETWIDTH           7
+
+/*  Cache set associativity (number of ways):  */
+#define XCHAL_ICACHE_WAYS               4
+#define XCHAL_DCACHE_WAYS               4
+
+/*  Cache features:  */
+#define XCHAL_ICACHE_LINE_LOCKABLE      1
+#define XCHAL_DCACHE_LINE_LOCKABLE      1
+#define XCHAL_ICACHE_ECC_PARITY         0
+#define XCHAL_DCACHE_ECC_PARITY         0
+
+/*  Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits):  */
+#define XCHAL_CA_BITS                   4
+
+
+/*----------------------------------------------------------------------
+                        INTERNAL I/D RAM/ROMs and XLMI
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_INSTROM               0       /* number of core instr. ROMs */
+#define XCHAL_NUM_INSTRAM               0       /* number of core instr. RAMs */
+#define XCHAL_NUM_DATAROM               0       /* number of core data ROMs */
+#define XCHAL_NUM_DATARAM               0       /* number of core data RAMs */
+#define XCHAL_NUM_URAM                  0       /* number of core unified RAMs*/
+#define XCHAL_NUM_XLMI                  0       /* number of core XLMI ports */
+
+
+/*----------------------------------------------------------------------
+                        INTERRUPTS and TIMERS
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_INTERRUPTS           1       /* interrupt option */
+#define XCHAL_HAVE_HIGHPRI_INTERRUPTS   1       /* med/high-pri. interrupts */
+#define XCHAL_HAVE_NMI                  1       /* non-maskable interrupt */
+#define XCHAL_HAVE_CCOUNT               1       /* CCOUNT reg. (timer option) */
+#define XCHAL_NUM_TIMERS                3       /* number of CCOMPAREn regs */
+#define XCHAL_NUM_INTERRUPTS            22      /* number of interrupts */
+#define XCHAL_NUM_INTERRUPTS_LOG2       5       /* ceil(log2(NUM_INTERRUPTS)) */
+#define XCHAL_NUM_EXTINTERRUPTS         17      /* num of external interrupts */
+#define XCHAL_NUM_INTLEVELS             6       /* number of interrupt levels
+                                                   (not including level zero) */
+#define XCHAL_EXCM_LEVEL                3       /* level masked by PS.EXCM */
+        /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
+
+/*  Masks of interrupts at each interrupt level:  */
+#define XCHAL_INTLEVEL1_MASK            0x001F80FF
+#define XCHAL_INTLEVEL2_MASK            0x00000100
+#define XCHAL_INTLEVEL3_MASK            0x00200E00
+#define XCHAL_INTLEVEL4_MASK            0x00001000
+#define XCHAL_INTLEVEL5_MASK            0x00002000
+#define XCHAL_INTLEVEL6_MASK            0x00000000
+#define XCHAL_INTLEVEL7_MASK            0x00004000
+
+/*  Masks of interrupts at each range 1..n of interrupt levels:  */
+#define XCHAL_INTLEVEL1_ANDBELOW_MASK   0x001F80FF
+#define XCHAL_INTLEVEL2_ANDBELOW_MASK   0x001F81FF
+#define XCHAL_INTLEVEL3_ANDBELOW_MASK   0x003F8FFF
+#define XCHAL_INTLEVEL4_ANDBELOW_MASK   0x003F9FFF
+#define XCHAL_INTLEVEL5_ANDBELOW_MASK   0x003FBFFF
+#define XCHAL_INTLEVEL6_ANDBELOW_MASK   0x003FBFFF
+#define XCHAL_INTLEVEL7_ANDBELOW_MASK   0x003FFFFF
+
+/*  Level of each interrupt:  */
+#define XCHAL_INT0_LEVEL                1
+#define XCHAL_INT1_LEVEL                1
+#define XCHAL_INT2_LEVEL                1
+#define XCHAL_INT3_LEVEL                1
+#define XCHAL_INT4_LEVEL                1
+#define XCHAL_INT5_LEVEL                1
+#define XCHAL_INT6_LEVEL                1
+#define XCHAL_INT7_LEVEL                1
+#define XCHAL_INT8_LEVEL                2
+#define XCHAL_INT9_LEVEL                3
+#define XCHAL_INT10_LEVEL               3
+#define XCHAL_INT11_LEVEL               3
+#define XCHAL_INT12_LEVEL               4
+#define XCHAL_INT13_LEVEL               5
+#define XCHAL_INT14_LEVEL               7
+#define XCHAL_INT15_LEVEL               1
+#define XCHAL_INT16_LEVEL               1
+#define XCHAL_INT17_LEVEL               1
+#define XCHAL_INT18_LEVEL               1
+#define XCHAL_INT19_LEVEL               1
+#define XCHAL_INT20_LEVEL               1
+#define XCHAL_INT21_LEVEL               3
+#define XCHAL_DEBUGLEVEL                6       /* debug interrupt level */
+#define XCHAL_HAVE_DEBUG_EXTERN_INT     1       /* OCD external db interrupt */
+#define XCHAL_NMILEVEL                  7       /* NMI "level" (for use with
+                                                   EXCSAVE/EPS/EPC_n, RFI n) */
+
+/*  Type of each interrupt:  */
+#define XCHAL_INT0_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT1_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT2_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT3_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT4_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT5_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT6_TYPE         XTHAL_INTTYPE_TIMER
+#define XCHAL_INT7_TYPE         XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT8_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT9_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT10_TYPE        XTHAL_INTTYPE_TIMER
+#define XCHAL_INT11_TYPE        XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT12_TYPE        XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT13_TYPE        XTHAL_INTTYPE_TIMER
+#define XCHAL_INT14_TYPE        XTHAL_INTTYPE_NMI
+#define XCHAL_INT15_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT16_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT17_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT18_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT19_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT20_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT21_TYPE        XTHAL_INTTYPE_EXTERN_EDGE
+
+/*  Masks of interrupts for each type of interrupt:  */
+#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFC00000
+#define XCHAL_INTTYPE_MASK_SOFTWARE     0x00000880
+#define XCHAL_INTTYPE_MASK_EXTERN_EDGE  0x003F8000
+#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000133F
+#define XCHAL_INTTYPE_MASK_TIMER        0x00002440
+#define XCHAL_INTTYPE_MASK_NMI          0x00004000
+#define XCHAL_INTTYPE_MASK_WRITE_ERROR  0x00000000
+
+/*  Interrupt numbers assigned to specific interrupt sources:  */
+#define XCHAL_TIMER0_INTERRUPT          6       /* CCOMPARE0 */
+#define XCHAL_TIMER1_INTERRUPT          10      /* CCOMPARE1 */
+#define XCHAL_TIMER2_INTERRUPT          13      /* CCOMPARE2 */
+#define XCHAL_TIMER3_INTERRUPT          XTHAL_TIMER_UNCONFIGURED
+#define XCHAL_NMI_INTERRUPT             14      /* non-maskable interrupt */
+
+/*  Interrupt numbers for levels at which only one interrupt is configured:  */
+#define XCHAL_INTLEVEL2_NUM             8
+#define XCHAL_INTLEVEL4_NUM             12
+#define XCHAL_INTLEVEL5_NUM             13
+#define XCHAL_INTLEVEL7_NUM             14
+/*  (There are many interrupts each at level(s) 1, 3.)  */
+
+
+/*
+ *  External interrupt vectors/levels.
+ *  These macros describe how Xtensa processor interrupt numbers
+ *  (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
+ *  map to external BInterrupt<n> pins, for those interrupts
+ *  configured as external (level-triggered, edge-triggered, or NMI).
+ *  See the Xtensa processor databook for more details.
+ */
+
+/*  Core interrupt numbers mapped to each EXTERNAL interrupt number:  */
+#define XCHAL_EXTINT0_NUM               0       /* (intlevel 1) */
+#define XCHAL_EXTINT1_NUM               1       /* (intlevel 1) */
+#define XCHAL_EXTINT2_NUM               2       /* (intlevel 1) */
+#define XCHAL_EXTINT3_NUM               3       /* (intlevel 1) */
+#define XCHAL_EXTINT4_NUM               4       /* (intlevel 1) */
+#define XCHAL_EXTINT5_NUM               5       /* (intlevel 1) */
+#define XCHAL_EXTINT6_NUM               8       /* (intlevel 2) */
+#define XCHAL_EXTINT7_NUM               9       /* (intlevel 3) */
+#define XCHAL_EXTINT8_NUM               12      /* (intlevel 4) */
+#define XCHAL_EXTINT9_NUM               14      /* (intlevel 7) */
+#define XCHAL_EXTINT10_NUM              15      /* (intlevel 1) */
+#define XCHAL_EXTINT11_NUM              16      /* (intlevel 1) */
+#define XCHAL_EXTINT12_NUM              17      /* (intlevel 1) */
+#define XCHAL_EXTINT13_NUM              18      /* (intlevel 1) */
+#define XCHAL_EXTINT14_NUM              19      /* (intlevel 1) */
+#define XCHAL_EXTINT15_NUM              20      /* (intlevel 1) */
+#define XCHAL_EXTINT16_NUM              21      /* (intlevel 3) */
+
+
+/*----------------------------------------------------------------------
+                        EXCEPTIONS and VECTORS
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_XEA_VERSION               2       /* Xtensa Exception Architecture
+                                                   number: 1 == XEA1 (old)
+                                                           2 == XEA2 (new)
+                                                           0 == XEAX (extern) */
+#define XCHAL_HAVE_XEA1                 0       /* Exception Architecture 1 */
+#define XCHAL_HAVE_XEA2                 1       /* Exception Architecture 2 */
+#define XCHAL_HAVE_XEAX                 0       /* External Exception Arch. */
+#define XCHAL_HAVE_EXCEPTIONS           1       /* exception option */
+#define XCHAL_HAVE_MEM_ECC_PARITY       0       /* local memory ECC/parity */
+#define XCHAL_HAVE_VECTOR_SELECT        1       /* relocatable vectors */
+#define XCHAL_HAVE_VECBASE              1       /* relocatable vectors */
+#define XCHAL_VECBASE_RESET_VADDR       0xD0000000  /* VECBASE reset value */
+#define XCHAL_VECBASE_RESET_PADDR       0x00000000
+#define XCHAL_RESET_VECBASE_OVERLAP     0
+
+#define XCHAL_RESET_VECTOR0_VADDR       0xFE000000
+#define XCHAL_RESET_VECTOR0_PADDR       0xFE000000
+#define XCHAL_RESET_VECTOR1_VADDR       0xD8000500
+#define XCHAL_RESET_VECTOR1_PADDR       0x00000500
+#define XCHAL_RESET_VECTOR_VADDR        0xFE000000
+#define XCHAL_RESET_VECTOR_PADDR        0xFE000000
+#define XCHAL_USER_VECOFS               0x00000340
+#define XCHAL_USER_VECTOR_VADDR         0xD0000340
+#define XCHAL_USER_VECTOR_PADDR         0x00000340
+#define XCHAL_KERNEL_VECOFS             0x00000300
+#define XCHAL_KERNEL_VECTOR_VADDR       0xD0000300
+#define XCHAL_KERNEL_VECTOR_PADDR       0x00000300
+#define XCHAL_DOUBLEEXC_VECOFS          0x000003C0
+#define XCHAL_DOUBLEEXC_VECTOR_VADDR    0xD00003C0
+#define XCHAL_DOUBLEEXC_VECTOR_PADDR    0x000003C0
+#define XCHAL_WINDOW_OF4_VECOFS         0x00000000
+#define XCHAL_WINDOW_UF4_VECOFS         0x00000040
+#define XCHAL_WINDOW_OF8_VECOFS         0x00000080
+#define XCHAL_WINDOW_UF8_VECOFS         0x000000C0
+#define XCHAL_WINDOW_OF12_VECOFS        0x00000100
+#define XCHAL_WINDOW_UF12_VECOFS        0x00000140
+#define XCHAL_WINDOW_VECTORS_VADDR      0xD0000000
+#define XCHAL_WINDOW_VECTORS_PADDR      0x00000000
+#define XCHAL_INTLEVEL2_VECOFS          0x00000180
+#define XCHAL_INTLEVEL2_VECTOR_VADDR    0xD0000180
+#define XCHAL_INTLEVEL2_VECTOR_PADDR    0x00000180
+#define XCHAL_INTLEVEL3_VECOFS          0x000001C0
+#define XCHAL_INTLEVEL3_VECTOR_VADDR    0xD00001C0
+#define XCHAL_INTLEVEL3_VECTOR_PADDR    0x000001C0
+#define XCHAL_INTLEVEL4_VECOFS          0x00000200
+#define XCHAL_INTLEVEL4_VECTOR_VADDR    0xD0000200
+#define XCHAL_INTLEVEL4_VECTOR_PADDR    0x00000200
+#define XCHAL_INTLEVEL5_VECOFS          0x00000240
+#define XCHAL_INTLEVEL5_VECTOR_VADDR    0xD0000240
+#define XCHAL_INTLEVEL5_VECTOR_PADDR    0x00000240
+#define XCHAL_INTLEVEL6_VECOFS          0x00000280
+#define XCHAL_INTLEVEL6_VECTOR_VADDR    0xD0000280
+#define XCHAL_INTLEVEL6_VECTOR_PADDR    0x00000280
+#define XCHAL_DEBUG_VECOFS              XCHAL_INTLEVEL6_VECOFS
+#define XCHAL_DEBUG_VECTOR_VADDR        XCHAL_INTLEVEL6_VECTOR_VADDR
+#define XCHAL_DEBUG_VECTOR_PADDR        XCHAL_INTLEVEL6_VECTOR_PADDR
+#define XCHAL_NMI_VECOFS                0x000002C0
+#define XCHAL_NMI_VECTOR_VADDR          0xD00002C0
+#define XCHAL_NMI_VECTOR_PADDR          0x000002C0
+#define XCHAL_INTLEVEL7_VECOFS          XCHAL_NMI_VECOFS
+#define XCHAL_INTLEVEL7_VECTOR_VADDR    XCHAL_NMI_VECTOR_VADDR
+#define XCHAL_INTLEVEL7_VECTOR_PADDR    XCHAL_NMI_VECTOR_PADDR
+
+
+/*----------------------------------------------------------------------
+                                DEBUG
+  ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_OCD                  1       /* OnChipDebug option */
+#define XCHAL_NUM_IBREAK                2       /* number of IBREAKn regs */
+#define XCHAL_NUM_DBREAK                2       /* number of DBREAKn regs */
+#define XCHAL_HAVE_OCD_DIR_ARRAY        1       /* faster OCD option */
+
+
+/*----------------------------------------------------------------------
+                                MMU
+  ----------------------------------------------------------------------*/
+
+/*  See core-matmap.h header file for more details.  */
+
+#define XCHAL_HAVE_TLBS                 1       /* inverse of HAVE_CACHEATTR */
+#define XCHAL_HAVE_SPANNING_WAY         0       /* one way maps I+D 4GB vaddr */
+#define XCHAL_HAVE_IDENTITY_MAP         0       /* vaddr == paddr always */
+#define XCHAL_HAVE_CACHEATTR            0       /* CACHEATTR register present */
+#define XCHAL_HAVE_MIMIC_CACHEATTR      0       /* region protection */
+#define XCHAL_HAVE_XLT_CACHEATTR        0       /* region prot. w/translation */
+#define XCHAL_HAVE_PTP_MMU              1       /* full MMU (with page table
+                                                   [autorefill] and protection)
+                                                   usable for an MMU-based OS */
+/*  If none of the above last 4 are set, it's a custom TLB configuration.  */
+#define XCHAL_ITLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
+#define XCHAL_DTLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
+
+#define XCHAL_MMU_ASID_BITS             8       /* number of bits in ASIDs */
+#define XCHAL_MMU_RINGS                 4       /* number of rings (1..4) */
+#define XCHAL_MMU_RING_BITS             2       /* num of bits in RING field */
+
+#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
+
+
+#endif /* _XTENSA_CORE_CONFIGURATION_H */
diff --git a/target-xtensa/core-dc232b/gdb-config.c b/target-xtensa/core-dc232b/gdb-config.c
new file mode 100644
index 0000000000..13aba5edec
--- /dev/null
+++ b/target-xtensa/core-dc232b/gdb-config.c
@@ -0,0 +1,261 @@
+/* Configuration for the Xtensa architecture for GDB, the GNU debugger.
+
+   Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is 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 2 of the License, or
+   (at your option) any later version.
+
+   This program is 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 this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+  XTREG(0,   0, 32, 4, 4, 0x0020, 0x0006, -2, 9, 0x0100, pc,
+          0, 0, 0, 0, 0, 0)
+  XTREG(1,   4, 32, 4, 4, 0x0100, 0x0006, -2, 1, 0x0002, ar0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(2,   8, 32, 4, 4, 0x0101, 0x0006, -2, 1, 0x0002, ar1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(3,  12, 32, 4, 4, 0x0102, 0x0006, -2, 1, 0x0002, ar2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(4,  16, 32, 4, 4, 0x0103, 0x0006, -2, 1, 0x0002, ar3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(5,  20, 32, 4, 4, 0x0104, 0x0006, -2, 1, 0x0002, ar4,
+          0, 0, 0, 0, 0, 0)
+  XTREG(6,  24, 32, 4, 4, 0x0105, 0x0006, -2, 1, 0x0002, ar5,
+          0, 0, 0, 0, 0, 0)
+  XTREG(7,  28, 32, 4, 4, 0x0106, 0x0006, -2, 1, 0x0002, ar6,
+          0, 0, 0, 0, 0, 0)
+  XTREG(8,  32, 32, 4, 4, 0x0107, 0x0006, -2, 1, 0x0002, ar7,
+          0, 0, 0, 0, 0, 0)
+  XTREG(9,  36, 32, 4, 4, 0x0108, 0x0006, -2, 1, 0x0002, ar8,
+          0, 0, 0, 0, 0, 0)
+  XTREG(10,  40, 32, 4, 4, 0x0109, 0x0006, -2, 1, 0x0002, ar9,
+          0, 0, 0, 0, 0, 0)
+  XTREG(11,  44, 32, 4, 4, 0x010a, 0x0006, -2, 1, 0x0002, ar10,
+          0, 0, 0, 0, 0, 0)
+  XTREG(12,  48, 32, 4, 4, 0x010b, 0x0006, -2, 1, 0x0002, ar11,
+          0, 0, 0, 0, 0, 0)
+  XTREG(13,  52, 32, 4, 4, 0x010c, 0x0006, -2, 1, 0x0002, ar12,
+          0, 0, 0, 0, 0, 0)
+  XTREG(14,  56, 32, 4, 4, 0x010d, 0x0006, -2, 1, 0x0002, ar13,
+          0, 0, 0, 0, 0, 0)
+  XTREG(15,  60, 32, 4, 4, 0x010e, 0x0006, -2, 1, 0x0002, ar14,
+          0, 0, 0, 0, 0, 0)
+  XTREG(16,  64, 32, 4, 4, 0x010f, 0x0006, -2, 1, 0x0002, ar15,
+          0, 0, 0, 0, 0, 0)
+  XTREG(17,  68, 32, 4, 4, 0x0110, 0x0006, -2, 1, 0x0002, ar16,
+          0, 0, 0, 0, 0, 0)
+  XTREG(18,  72, 32, 4, 4, 0x0111, 0x0006, -2, 1, 0x0002, ar17,
+          0, 0, 0, 0, 0, 0)
+  XTREG(19,  76, 32, 4, 4, 0x0112, 0x0006, -2, 1, 0x0002, ar18,
+          0, 0, 0, 0, 0, 0)
+  XTREG(20,  80, 32, 4, 4, 0x0113, 0x0006, -2, 1, 0x0002, ar19,
+          0, 0, 0, 0, 0, 0)
+  XTREG(21,  84, 32, 4, 4, 0x0114, 0x0006, -2, 1, 0x0002, ar20,
+          0, 0, 0, 0, 0, 0)
+  XTREG(22,  88, 32, 4, 4, 0x0115, 0x0006, -2, 1, 0x0002, ar21,
+          0, 0, 0, 0, 0, 0)
+  XTREG(23,  92, 32, 4, 4, 0x0116, 0x0006, -2, 1, 0x0002, ar22,
+          0, 0, 0, 0, 0, 0)
+  XTREG(24,  96, 32, 4, 4, 0x0117, 0x0006, -2, 1, 0x0002, ar23,
+          0, 0, 0, 0, 0, 0)
+  XTREG(25, 100, 32, 4, 4, 0x0118, 0x0006, -2, 1, 0x0002, ar24,
+          0, 0, 0, 0, 0, 0)
+  XTREG(26, 104, 32, 4, 4, 0x0119, 0x0006, -2, 1, 0x0002, ar25,
+          0, 0, 0, 0, 0, 0)
+  XTREG(27, 108, 32, 4, 4, 0x011a, 0x0006, -2, 1, 0x0002, ar26,
+          0, 0, 0, 0, 0, 0)
+  XTREG(28, 112, 32, 4, 4, 0x011b, 0x0006, -2, 1, 0x0002, ar27,
+          0, 0, 0, 0, 0, 0)
+  XTREG(29, 116, 32, 4, 4, 0x011c, 0x0006, -2, 1, 0x0002, ar28,
+          0, 0, 0, 0, 0, 0)
+  XTREG(30, 120, 32, 4, 4, 0x011d, 0x0006, -2, 1, 0x0002, ar29,
+          0, 0, 0, 0, 0, 0)
+  XTREG(31, 124, 32, 4, 4, 0x011e, 0x0006, -2, 1, 0x0002, ar30,
+          0, 0, 0, 0, 0, 0)
+  XTREG(32, 128, 32, 4, 4, 0x011f, 0x0006, -2, 1, 0x0002, ar31,
+          0, 0, 0, 0, 0, 0)
+  XTREG(33, 132, 32, 4, 4, 0x0200, 0x0006, -2, 2, 0x1100, lbeg,
+          0, 0, 0, 0, 0, 0)
+  XTREG(34, 136, 32, 4, 4, 0x0201, 0x0006, -2, 2, 0x1100, lend,
+          0, 0, 0, 0, 0, 0)
+  XTREG(35, 140, 32, 4, 4, 0x0202, 0x0006, -2, 2, 0x1100, lcount,
+          0, 0, 0, 0, 0, 0)
+  XTREG(36, 144,  6, 4, 4, 0x0203, 0x0006, -2, 2, 0x1100, sar,
+          0, 0, 0, 0, 0, 0)
+  XTREG(37, 148, 32, 4, 4, 0x0205, 0x0006, -2, 2, 0x1100, litbase,
+          0, 0, 0, 0, 0, 0)
+  XTREG(38, 152,  3, 4, 4, 0x0248, 0x0006, -2, 2, 0x1002, windowbase,
+          0, 0, 0, 0, 0, 0)
+  XTREG(39, 156,  8, 4, 4, 0x0249, 0x0006, -2, 2, 0x1002, windowstart,
+          0, 0, 0, 0, 0, 0)
+  XTREG(40, 160, 32, 4, 4, 0x02b0, 0x0002, -2, 2, 0x1000, sr176,
+          0, 0, 0, 0, 0, 0)
+  XTREG(41, 164, 32, 4, 4, 0x02d0, 0x0002, -2, 2, 0x1000, sr208,
+          0, 0, 0, 0, 0, 0)
+  XTREG(42, 168, 19, 4, 4, 0x02e6, 0x0006, -2, 2, 0x1100, ps,
+          0, 0, 0, 0, 0, 0)
+  XTREG(43, 172, 32, 4, 4, 0x03e7, 0x0006, -2, 3, 0x0110, threadptr,
+          0, 0, 0, 0, 0, 0)
+  XTREG(44, 176, 32, 4, 4, 0x020c, 0x0006, -1, 2, 0x1100, scompare1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(45, 180, 32, 4, 4, 0x0210, 0x0006, -1, 2, 0x1100, acclo,
+          0, 0, 0, 0, 0, 0)
+  XTREG(46, 184,  8, 4, 4, 0x0211, 0x0006, -1, 2, 0x1100, acchi,
+          0, 0, 0, 0, 0, 0)
+  XTREG(47, 188, 32, 4, 4, 0x0220, 0x0006, -1, 2, 0x1100, m0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(48, 192, 32, 4, 4, 0x0221, 0x0006, -1, 2, 0x1100, m1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(49, 196, 32, 4, 4, 0x0222, 0x0006, -1, 2, 0x1100, m2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(50, 200, 32, 4, 4, 0x0223, 0x0006, -1, 2, 0x1100, m3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(51, 204, 32, 4, 4, 0x03e6, 0x000e, -1, 3, 0x0110, expstate,
+          0, 0, 0, 0, 0, 0)
+  XTREG(52, 208, 32, 4, 4, 0x0253, 0x0007, -2, 2, 0x1000, ptevaddr,
+          0, 0, 0, 0, 0, 0)
+  XTREG(53, 212, 32, 4, 4, 0x0259, 0x000d, -2, 2, 0x1000, mmid,
+          0, 0, 0, 0, 0, 0)
+  XTREG(54, 216, 32, 4, 4, 0x025a, 0x0007, -2, 2, 0x1000, rasid,
+          0, 0, 0, 0, 0, 0)
+  XTREG(55, 220, 18, 4, 4, 0x025b, 0x0007, -2, 2, 0x1000, itlbcfg,
+          0, 0, 0, 0, 0, 0)
+  XTREG(56, 224, 18, 4, 4, 0x025c, 0x0007, -2, 2, 0x1000, dtlbcfg,
+          0, 0, 0, 0, 0, 0)
+  XTREG(57, 228,  2, 4, 4, 0x0260, 0x0007, -2, 2, 0x1000, ibreakenable,
+          0, 0, 0, 0, 0, 0)
+  XTREG(58, 232, 32, 4, 4, 0x0268, 0x0007, -2, 2, 0x1000, ddr,
+          0, 0, 0, 0, 0, 0)
+  XTREG(59, 236, 32, 4, 4, 0x0280, 0x0007, -2, 2, 0x1000, ibreaka0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(60, 240, 32, 4, 4, 0x0281, 0x0007, -2, 2, 0x1000, ibreaka1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(61, 244, 32, 4, 4, 0x0290, 0x0007, -2, 2, 0x1000, dbreaka0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(62, 248, 32, 4, 4, 0x0291, 0x0007, -2, 2, 0x1000, dbreaka1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(63, 252, 32, 4, 4, 0x02a0, 0x0007, -2, 2, 0x1000, dbreakc0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(64, 256, 32, 4, 4, 0x02a1, 0x0007, -2, 2, 0x1000, dbreakc1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(65, 260, 32, 4, 4, 0x02b1, 0x0007, -2, 2, 0x1000, epc1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(66, 264, 32, 4, 4, 0x02b2, 0x0007, -2, 2, 0x1000, epc2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(67, 268, 32, 4, 4, 0x02b3, 0x0007, -2, 2, 0x1000, epc3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(68, 272, 32, 4, 4, 0x02b4, 0x0007, -2, 2, 0x1000, epc4,
+          0, 0, 0, 0, 0, 0)
+  XTREG(69, 276, 32, 4, 4, 0x02b5, 0x0007, -2, 2, 0x1000, epc5,
+          0, 0, 0, 0, 0, 0)
+  XTREG(70, 280, 32, 4, 4, 0x02b6, 0x0007, -2, 2, 0x1000, epc6,
+          0, 0, 0, 0, 0, 0)
+  XTREG(71, 284, 32, 4, 4, 0x02b7, 0x0007, -2, 2, 0x1000, epc7,
+          0, 0, 0, 0, 0, 0)
+  XTREG(72, 288, 32, 4, 4, 0x02c0, 0x0007, -2, 2, 0x1000, depc,
+          0, 0, 0, 0, 0, 0)
+  XTREG(73, 292, 19, 4, 4, 0x02c2, 0x0007, -2, 2, 0x1000, eps2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(74, 296, 19, 4, 4, 0x02c3, 0x0007, -2, 2, 0x1000, eps3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(75, 300, 19, 4, 4, 0x02c4, 0x0007, -2, 2, 0x1000, eps4,
+          0, 0, 0, 0, 0, 0)
+  XTREG(76, 304, 19, 4, 4, 0x02c5, 0x0007, -2, 2, 0x1000, eps5,
+          0, 0, 0, 0, 0, 0)
+  XTREG(77, 308, 19, 4, 4, 0x02c6, 0x0007, -2, 2, 0x1000, eps6,
+          0, 0, 0, 0, 0, 0)
+  XTREG(78, 312, 19, 4, 4, 0x02c7, 0x0007, -2, 2, 0x1000, eps7,
+          0, 0, 0, 0, 0, 0)
+  XTREG(79, 316, 32, 4, 4, 0x02d1, 0x0007, -2, 2, 0x1000, excsave1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(80, 320, 32, 4, 4, 0x02d2, 0x0007, -2, 2, 0x1000, excsave2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(81, 324, 32, 4, 4, 0x02d3, 0x0007, -2, 2, 0x1000, excsave3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(82, 328, 32, 4, 4, 0x02d4, 0x0007, -2, 2, 0x1000, excsave4,
+          0, 0, 0, 0, 0, 0)
+  XTREG(83, 332, 32, 4, 4, 0x02d5, 0x0007, -2, 2, 0x1000, excsave5,
+          0, 0, 0, 0, 0, 0)
+  XTREG(84, 336, 32, 4, 4, 0x02d6, 0x0007, -2, 2, 0x1000, excsave6,
+          0, 0, 0, 0, 0, 0)
+  XTREG(85, 340, 32, 4, 4, 0x02d7, 0x0007, -2, 2, 0x1000, excsave7,
+          0, 0, 0, 0, 0, 0)
+  XTREG(86, 344,  8, 4, 4, 0x02e0, 0x0007, -2, 2, 0x1000, cpenable,
+          0, 0, 0, 0, 0, 0)
+  XTREG(87, 348, 22, 4, 4, 0x02e2, 0x000b, -2, 2, 0x1000, interrupt,
+          0, 0, 0, 0, 0, 0)
+  XTREG(88, 352, 22, 4, 4, 0x02e2, 0x000d, -2, 2, 0x1000, intset,
+          0, 0, 0, 0, 0, 0)
+  XTREG(89, 356, 22, 4, 4, 0x02e3, 0x000d, -2, 2, 0x1000, intclear,
+          0, 0, 0, 0, 0, 0)
+  XTREG(90, 360, 22, 4, 4, 0x02e4, 0x0007, -2, 2, 0x1000, intenable,
+          0, 0, 0, 0, 0, 0)
+  XTREG(91, 364, 32, 4, 4, 0x02e7, 0x0007, -2, 2, 0x1000, vecbase,
+          0, 0, 0, 0, 0, 0)
+  XTREG(92, 368,  6, 4, 4, 0x02e8, 0x0007, -2, 2, 0x1000, exccause,
+          0, 0, 0, 0, 0, 0)
+  XTREG(93, 372, 12, 4, 4, 0x02e9, 0x0003, -2, 2, 0x1000, debugcause,
+          0, 0, 0, 0, 0, 0)
+  XTREG(94, 376, 32, 4, 4, 0x02ea, 0x000f, -2, 2, 0x1000, ccount,
+          0, 0, 0, 0, 0, 0)
+  XTREG(95, 380, 32, 4, 4, 0x02eb, 0x0003, -2, 2, 0x1000, prid,
+          0, 0, 0, 0, 0, 0)
+  XTREG(96, 384, 32, 4, 4, 0x02ec, 0x000f, -2, 2, 0x1000, icount,
+          0, 0, 0, 0, 0, 0)
+  XTREG(97, 388,  4, 4, 4, 0x02ed, 0x0007, -2, 2, 0x1000, icountlevel,
+          0, 0, 0, 0, 0, 0)
+  XTREG(98, 392, 32, 4, 4, 0x02ee, 0x0007, -2, 2, 0x1000, excvaddr,
+          0, 0, 0, 0, 0, 0)
+  XTREG(99, 396, 32, 4, 4, 0x02f0, 0x000f, -2, 2, 0x1000, ccompare0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(100, 400, 32, 4, 4, 0x02f1, 0x000f, -2, 2, 0x1000, ccompare1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(101, 404, 32, 4, 4, 0x02f2, 0x000f, -2, 2, 0x1000, ccompare2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(102, 408, 32, 4, 4, 0x02f4, 0x0007, -2, 2, 0x1000, misc0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(103, 412, 32, 4, 4, 0x02f5, 0x0007, -2, 2, 0x1000, misc1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(104, 416, 32, 4, 4, 0x0000, 0x0006, -2, 8, 0x0100, a0,
+          0, 0, 0, 0, 0, 0)
+  XTREG(105, 420, 32, 4, 4, 0x0001, 0x0006, -2, 8, 0x0100, a1,
+          0, 0, 0, 0, 0, 0)
+  XTREG(106, 424, 32, 4, 4, 0x0002, 0x0006, -2, 8, 0x0100, a2,
+          0, 0, 0, 0, 0, 0)
+  XTREG(107, 428, 32, 4, 4, 0x0003, 0x0006, -2, 8, 0x0100, a3,
+          0, 0, 0, 0, 0, 0)
+  XTREG(108, 432, 32, 4, 4, 0x0004, 0x0006, -2, 8, 0x0100, a4,
+          0, 0, 0, 0, 0, 0)
+  XTREG(109, 436, 32, 4, 4, 0x0005, 0x0006, -2, 8, 0x0100, a5,
+          0, 0, 0, 0, 0, 0)
+  XTREG(110, 440, 32, 4, 4, 0x0006, 0x0006, -2, 8, 0x0100, a6,
+          0, 0, 0, 0, 0, 0)
+  XTREG(111, 444, 32, 4, 4, 0x0007, 0x0006, -2, 8, 0x0100, a7,
+          0, 0, 0, 0, 0, 0)
+  XTREG(112, 448, 32, 4, 4, 0x0008, 0x0006, -2, 8, 0x0100, a8,
+          0, 0, 0, 0, 0, 0)
+  XTREG(113, 452, 32, 4, 4, 0x0009, 0x0006, -2, 8, 0x0100, a9,
+          0, 0, 0, 0, 0, 0)
+  XTREG(114, 456, 32, 4, 4, 0x000a, 0x0006, -2, 8, 0x0100, a10,
+          0, 0, 0, 0, 0, 0)
+  XTREG(115, 460, 32, 4, 4, 0x000b, 0x0006, -2, 8, 0x0100, a11,
+          0, 0, 0, 0, 0, 0)
+  XTREG(116, 464, 32, 4, 4, 0x000c, 0x0006, -2, 8, 0x0100, a12,
+          0, 0, 0, 0, 0, 0)
+  XTREG(117, 468, 32, 4, 4, 0x000d, 0x0006, -2, 8, 0x0100, a13,
+          0, 0, 0, 0, 0, 0)
+  XTREG(118, 472, 32, 4, 4, 0x000e, 0x0006, -2, 8, 0x0100, a14,
+          0, 0, 0, 0, 0, 0)
+  XTREG(119, 476, 32, 4, 4, 0x000f, 0x0006, -2, 8, 0x0100, a15,
+          0, 0, 0, 0, 0, 0)