Add new port: crx-elf

1 files changed, 395 insertions, 0 deletions

diff --git a/include/opcode/crx.h b/include/opcode/crx.h
new file mode 100644
index 0000000..1e0d573
--- /dev/null
+++ b/include/opcode/crx.h
@@ -0,0 +1,395 @@
+/* crx.h -- Header file for CRX opcode and register tables.
+   Copyright 2004 Free Software Foundation, Inc.
+   Contributed by Tomer Levi, NSC, Israel.
+   Originally written for GAS 2.12 by Tomer Levi, NSC, Israel.
+   Updates, BFDizing, GNUifying and ELF support by Tomer Levi.
+
+   This file is part of GAS, GDB and the GNU binutils.
+
+   GAS, GDB, and GNU binutils 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, or (at your
+   option) any later version.
+
+   GAS, GDB, and GNU binutils are distributed in the hope that they 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _CRX_H_
+#define _CRX_H_
+
+/* CRX core/debug Registers :
+   The enums are used as indices to CRX registers table (crx_regtab).
+   Therefore, order MUST be preserved.  */
+
+typedef enum
+  {
+    /* 32-bit general purpose registers.  */
+    r0, r1, r2, r3, r4, r5, r6, r7, r8, r9,
+    r10, r11, r12, r13, r14, r15, ra, sp,
+    /* 32-bit user registers.  */
+    u0, u1, u2, u3, u4, u5, u6, u7, u8, u9,
+    u10, u11, u12, u13, u14, u15, ura, usp,
+    /* hi and lo registers.  */
+    hi, lo,
+    /* hi and lo user registers.  */
+    uhi, ulo,
+    /* Processor Status Register.  */
+    psr,
+    /* Configuration Register.  */
+    cfg,
+    /* Coprocessor Configuration Register.  */
+    cpcfg,
+    /* Cashe Configuration Register.  */
+    ccfg,
+    /* Interrupt Base Register.  */
+    intbase,
+    /* Interrupt Stack Pointer Register.  */
+    isp,
+    /* Coprocessor Enable Register.  */
+    cen,
+    /* Program Counter Register.  */
+    pc,
+    /* Not a register.  */
+    nullregister,
+    MAX_REG
+  }
+reg;
+
+/* CRX Coprocessor registers and special registers :
+   The enums are used as indices to CRX coprocessor registers table
+   (crx_copregtab). Therefore, order MUST be preserved.  */
+
+typedef enum
+  {
+    /* Coprocessor registers.  */
+    c0 = MAX_REG, c1, c2, c3, c4, c5, c6, c7, c8,
+    c9, c10, c11, c12, c13, c14, c15,
+    /* Coprocessor special registers.  */
+    cs0, cs1 ,cs2, cs3, cs4, cs5, cs6, cs7, cs8,
+    cs9, cs10, cs11, cs12, cs13, cs14, cs15,
+    /* Not a Coprocessor register.  */
+    nullcopregister,
+    MAX_COPREG
+  }
+copreg;
+
+/* CRX Register types. */
+
+typedef enum
+  {
+    CRX_PC_REGTYPE,   /*  pc type */
+    CRX_R_REGTYPE,    /*  r<N>	  */
+    CRX_U_REGTYPE,    /*  u<N>	  */
+    CRX_C_REGTYPE,    /*  c<N>	  */
+    CRX_CS_REGTYPE,   /*  cs<N>	  */
+    CRX_MTPR_REGTYPE, /*  mtpr	  */
+    CRX_CFG_REGTYPE   /*  *hi|lo, *cfg, psr */
+  }
+reg_type;
+
+/* CRX argument types :
+   The argument types correspond to instructions operands
+
+   Argument types :
+   r - register
+   c - constant
+   d - displacement
+   ic - immediate
+   icr - index register
+   rbase - register base
+   s - star ('*')
+   copr - coprocessor register
+   copsr - coprocessor special register.  */
+
+typedef enum
+  {
+    arg_r, arg_c, arg_cr, arg_dc, arg_dcr, arg_sc,
+    arg_ic, arg_icr, arg_rbase, arg_copr, arg_copsr,
+    /* Not an argument.  */
+    nullargs
+  }
+argtype;
+
+/* CRX operand types :
+   The operand types correspond to instructions operands
+
+   Operand Types :
+   cst4 - 4-bit encoded constant
+   iN - N-bit immediate field
+   d, dispsN - N-bit immediate signed displacement
+   dispuN - N-bit immediate unsigned displacement
+   absN - N-bit absolute address
+   rbase - 4-bit genaral-purpose register specifier
+   regr - 4-bit genaral-purpose register specifier
+   regr8 - 8-bit register address space
+   copregr - coprocessor register
+   copsregr - coprocessor special register
+   scl2 - 2-bit scaling factor for memory index
+   ridx - register index.  */
+
+typedef enum
+  {
+    dummy, cst4, disps9,
+    i3, i4, i5, i8, i12, i16, i32,
+    d5, d9, d17, d25, d33,
+    abs16, abs32,
+    rbase, rbase_cst4,
+    rbase_dispu8, rbase_dispu12, rbase_dispu16, rbase_dispu28, rbase_dispu32,
+    rbase_ridx_scl2_dispu6, rbase_ridx_scl2_dispu22,
+    regr, regr8, copregr,copregr8,copsregr,
+    /* Not an operand.  */
+    nulloperand,
+    /* Maximum supported operand.  */
+    MAX_OPRD
+  }
+operand_type;
+
+/* CRX instruction types.  */
+
+#define ARITH_INS         1
+#define LD_STOR_INS       2
+#define BRANCH_INS        3
+#define ARITH_BYTE_INS    4
+#define CMPBR_INS         5
+#define SHIFT_INS         6
+#define BRANCH_NEQ_INS    7
+#define LD_STOR_INS_INC   8
+#define STOR_IMM_INS	  9
+#define CSTBIT_INS       10
+#define SYS_INS		 11
+#define JMP_INS		 12
+#define MUL_INS		 13
+#define DIV_INS		 14
+#define COP_BRANCH_INS   15
+#define COP_REG_INS      16
+#define DCR_BRANCH_INS   17
+#define MMC_INS          18
+#define MMU_INS          19
+
+/* Maximum value supported for instruction types.  */
+#define CRX_INS_MAX	(1 << 5)
+/* Mask to record an instruction type.  */
+#define CRX_INS_MASK	(CRX_INS_MAX - 1)
+/* Return instruction type, given instruction's attributes.  */
+#define CRX_INS_TYPE(attr) ((attr) & CRX_INS_MASK)
+
+/* Indicates whether this instruction has a register list as parameter.  */
+#define REG_LIST	CRX_INS_MAX
+/* The operands in binary and assembly are placed in reverse order.
+   load - (REVERSE_MATCH)/store - (! REVERSE_MATCH).  */
+#define REVERSE_MATCH  (REG_LIST << 1)
+
+/* Kind of displacement map used DISPU[BWD]4.  */
+#define DISPUB4	       (REVERSE_MATCH << 1)
+#define DISPUW4	       (DISPUB4 << 1)
+#define DISPUD4	       (DISPUW4 << 1)
+#define CST4MAP	       (DISPUB4 | DISPUW4 | DISPUD4)
+
+/* Printing formats, where the instruction prefix isn't consecutive.  */
+#define FMT_1	       (DISPUD4 << 1) /* 0xF0F00000 */
+#define FMT_2	       (FMT_1 << 1)   /* 0xFFF0FF00 */
+#define FMT_3	       (FMT_2 << 1)   /* 0xFFF00F00 */
+#define FMT_4	       (FMT_3 << 1)   /* 0xFFF0F000 */
+#define FMT_5	       (FMT_4 << 1)   /* 0xFFF0FFF0 */
+#define FMT_CRX	       (FMT_1 | FMT_2 | FMT_3 | FMT_4 | FMT_5)
+
+#define RELAXABLE      (FMT_5 << 1)
+
+/* Maximum operands per instruction.  */
+#define MAX_OPERANDS	  5
+/* Maximum words per instruction.  */
+#define MAX_WORDS	  3
+/* Maximum register name length. */
+#define MAX_REGNAME_LEN	  10
+/* Maximum instruction length. */
+#define MAX_INST_LEN	  256
+
+/* Single operand description.  */
+
+typedef struct
+  {
+    /* Operand type.  */
+    operand_type op_type;
+    /* Operand location within the opcode.  */
+    unsigned int shift;
+  }
+operand_desc;
+
+/* Instruction data structure used in instruction table.  */
+
+typedef struct
+  {
+    /* Name.  */
+    const char *mnemonic;
+    /* Size (in words).  */
+    unsigned int size;
+    /* Constant prefix (matched by the disassembler).  */
+    unsigned long match;
+    /* Match size (in bits).  */
+    int match_bits;
+    /* Attributes.  */
+    unsigned int flags;
+    /* Operands (always last, so unreferenced operands are initialized).  */
+    operand_desc operands[MAX_OPERANDS];
+  }
+inst;
+
+/* Data structure for a single instruction's arguments (Operands).  */
+
+typedef struct
+  {
+    /* Register or base register.  */
+    reg r;
+    /* Index register.  */
+    reg i_r;
+    /* Coprocessor register.  */
+    copreg cr;
+    /* Constant/immediate/absolute value.  */
+    unsigned long int constant;
+    /* Scaled index mode.  */
+    unsigned int scale;
+    /* Argument type.  */
+    argtype type;
+    /* Size of the argument (in bits) required to represent.  */
+    int size;
+    /* Indicates whether a constant is positive or negative.  */
+    int signflag;
+  }
+argument;
+
+/* Internal structure to hold the various entities
+   corresponding to the current assembling instruction.  */
+
+typedef struct
+  {
+    /* Number of arguments.  */
+    int nargs;
+    /* The argument data structure for storing args (operands).  */
+    argument arg[MAX_OPERANDS];
+/* The following fields are required only by CRX-assembler.  */
+#ifdef TC_CRX
+    /* Expression used for setting the fixups (if any).  */
+    expressionS exp;
+    bfd_reloc_code_real_type rtype;
+#endif /* TC_CRX */
+    /* Instruction size (in bytes).  */
+    int size;
+  }
+ins;
+
+/* Structure to hold information about predefined operands.  */
+
+typedef struct
+  {
+    /* Size (in bits).  */
+    unsigned int bit_size;
+    /* Argument type.  */
+    argtype arg_type;
+  }
+operand_entry;
+
+/* Structure to hold trap handler information.  */
+
+typedef struct
+  {
+    /* Trap name.  */
+    char *name;
+    /* Index in dispatch table.  */
+    unsigned int entry;
+  }
+trap_entry;
+
+/* Structure to hold information about predefined registers.  */
+
+typedef struct
+  {
+    /* Name (string representation).  */
+    char *name;
+    /* Value (enum representation).  */
+    union
+    {
+      /* Register.  */
+      reg reg_val;
+      /* Coprocessor register.  */
+      copreg copreg_val;
+    } value;
+    /* Register image.  */
+    int image;
+    /* Register type.  */
+    reg_type type;
+  }
+reg_entry;
+
+/* Structure to hold a cst4 operand mapping.  */
+
+typedef struct
+  {
+    /* The binary value which is written to the object file.  */
+    int binary;
+    /* The value which is mapped.  */
+    int value;
+  }
+cst4_entry;
+
+/* CRX opcode table.  */
+extern const inst crx_instruction[];
+extern const int crx_num_opcodes;
+#define NUMOPCODES crx_num_opcodes
+
+/* CRX operands table.  */
+extern const operand_entry crx_optab[];
+
+/* CRX registers table.  */
+extern const reg_entry crx_regtab[];
+extern const int crx_num_regs;
+#define NUMREGS crx_num_regs
+
+/* CRX coprocessor registers table.  */
+extern const reg_entry crx_copregtab[];
+extern const int crx_num_copregs;
+#define NUMCOPREGS crx_num_copregs
+
+/* CRX trap/interrupt table.  */
+extern const trap_entry crx_traps[];
+extern const int crx_num_traps;
+#define NUMTRAPS crx_num_traps
+
+/* cst4 operand mapping.  */
+extern const cst4_entry cst4_map[];
+extern const int cst4_maps;
+
+/* Current instruction we're assembling.  */
+extern const inst *instruction;
+
+/* A macro for representing the instruction "constant" opcode, that is,
+   the FIXED part of the instruction. The "constant" opcode is represented
+   as a 32-bit unsigned long, where OPC is expanded (by a left SHIFT)
+   over that range.  */
+#define BIN(OPC,SHIFT)	(OPC << SHIFT)
+
+/* Is the current instruction type is TYPE ?  */
+#define IS_INSN_TYPE(TYPE)	      \
+  (CRX_INS_TYPE(instruction->flags) == TYPE)
+
+/* Is the current instruction mnemonic is MNEMONIC ?  */
+#define IS_INSN_MNEMONIC(MNEMONIC)    \
+  (strcmp(instruction->mnemonic,MNEMONIC) == 0)
+
+/* Does the current instruction has register list ?  */
+#define INST_HAS_REG_LIST	      \
+  (instruction->flags & REG_LIST)
+
+/* Long long type handling.  */
+/* Replace all appearances of 'long long int' with LONGLONG.  */
+typedef long long int LONGLONG;
+typedef unsigned long long ULONGLONG;
+/* A mask for the upper 31 bits of a 64 bits type.  */
+#define UPPER31_MASK	0xFFFFFFFE00000000LL
+
+#endif /* _CRX_H_ */