/* crx.h -- Header file for CRX opcode and register tables.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright 2004, 2010 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.
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
+ published by the Free Software Foundation; either version 3, or (at your
option) any later version.
GAS, GDB, and GNU binutils are distributed in the hope that they will be
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef _CRX_H_
#define _CRX_H_
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,
+ /* Configuration Register. */
+ cfg,
+ /* Coprocessor Configuration Register. */
+ cpcfg,
/* Coprocessor Enable Register. */
cen,
- /* Program Counter Register. */
- pc,
/* Not a register. */
nullregister,
MAX_REG
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 */
+ CRX_CFG_REGTYPE /* configuration register */
}
reg_type;
Argument types :
r - register
c - constant
- d - displacement
- ic - immediate
- icr - index register
+ i - immediate
+ idxr - index register
rbase - register base
s - star ('*')
copr - coprocessor 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,
+ arg_r, arg_c, arg_cr, arg_ic, arg_icr, arg_sc,
+ arg_idxr, 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. */
+ The operand types correspond to instructions operands. */
typedef enum
{
- dummy, cst4, disps9,
- /* Immediate operands. */
+ dummy,
+ /* 4-bit encoded constant. */
+ cst4,
+ /* N-bit immediate. */
i16, i32,
- /* Unsigned immediate operands. */
- us3, us4, us5, us16,
- /* Signed displacement operands. */
- d5, d9, d17, d25, d33,
- /* Absolute operands. */
+ /* N-bit unsigned immediate. */
+ ui3, ui4, ui5, ui16,
+ /* N-bit signed displacement. */
+ disps9, disps17, disps25, disps32,
+ /* N-bit unsigned displacement. */
+ dispu5,
+ /* N-bit escaped displacement. */
+ dispe9,
+ /* N-bit absolute address. */
abs16, abs32,
- /* Register relative operands. */
- rbase, rbase_cst4,
- rbase_dispu8, rbase_dispu12, rbase_dispu16, rbase_dispu28, rbase_dispu32,
- /* Index operands. */
- rbase_ridx_scl2_dispu6, rbase_ridx_scl2_dispu22,
- /* Register and processor register operands. */
- regr, regr8, copregr,copregr8,copsregr,
+ /* Register relative. */
+ rbase, rbase_dispu4,
+ rbase_disps12, rbase_disps16, rbase_disps28, rbase_disps32,
+ /* Register index. */
+ rindex_disps6, rindex_disps22,
+ /* 4-bit genaral-purpose register specifier. */
+ regr,
+ /* 8-bit register address space. */
+ regr8,
+ /* coprocessor register. */
+ copregr,
+ /* coprocessor special register. */
+ copsregr,
/* Not an operand. */
nulloperand,
/* Maximum supported operand. */
/* CRX instruction types. */
+#define NO_TYPE_INS 0
#define ARITH_INS 1
#define LD_STOR_INS 2
#define BRANCH_INS 3
#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 COPS_REG_INS 17
-#define DCR_BRANCH_INS 18
-#define MMC_INS 19
-#define MMU_INS 20
+#define COP_BRANCH_INS 11
+#define COP_REG_INS 12
+#define COPS_REG_INS 13
+#define DCR_BRANCH_INS 14
/* Maximum value supported for instruction types. */
-#define CRX_INS_MAX (1 << 5)
+#define CRX_INS_MAX (1 << 4)
/* Mask to record an instruction type. */
#define CRX_INS_MASK (CRX_INS_MAX - 1)
/* Return instruction type, given instruction's attributes. */
#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)
+#define REVERSE_MATCH (1 << 5)
/* 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)
+#define DISPUB4 (1 << 6)
+#define DISPUW4 (1 << 7)
+#define DISPUD4 (1 << 8)
+#define DISPU4MAP (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_1 (1 << 9) /* 0xF0F00000 */
+#define FMT_2 (1 << 10) /* 0xFFF0FF00 */
+#define FMT_3 (1 << 11) /* 0xFFF00F00 */
+#define FMT_4 (1 << 12) /* 0xFFF0F000 */
+#define FMT_5 (1 << 13) /* 0xFFF0FFF0 */
#define FMT_CRX (FMT_1 | FMT_2 | FMT_3 | FMT_4 | FMT_5)
-#define RELAXABLE (FMT_5 << 1)
+/* Indicates whether this instruction can be relaxed. */
+#define RELAXABLE (1 << 14)
+
+/* Indicates that instruction uses user registers (and not
+ general-purpose registers) as operands. */
+#define USER_REG (1 << 15)
+
+/* Indicates that instruction can perfom a cst4 mapping. */
+#define CST4MAP (1 << 16)
+
+/* Instruction shouldn't allow 'sp' usage. */
+#define NO_SP (1 << 17)
+
+/* Instruction shouldn't allow to push a register which is used as a rptr. */
+#define NO_RPTR (1 << 18)
/* 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
+
+/* Values defined for the flags field of a struct operand_entry. */
+
+/* Operand must be an unsigned number. */
+#define OP_UNSIGNED (1 << 0)
+/* Operand must be a signed number. */
+#define OP_SIGNED (1 << 1)
+/* A special arithmetic 4-bit constant operand. */
+#define OP_CST4 (1 << 2)
+/* A special load/stor 4-bit unsigned displacement operand. */
+#define OP_DISPU4 (1 << 3)
+/* Operand must be an even number. */
+#define OP_EVEN (1 << 4)
+/* Operand is shifted right. */
+#define OP_SHIFT (1 << 5)
+/* Operand is shifted right and decremented. */
+#define OP_SHIFT_DEC (1 << 6)
+/* Operand has reserved escape sequences. */
+#define OP_ESC (1 << 7)
+/* Operand is used only for the upper 64 KB (FFFF0000 to FFFFFFFF). */
+#define OP_UPPER_64KB (1 << 8)
+
/* Single operand description. */
typedef struct
/* Coprocessor register. */
copreg cr;
/* Constant/immediate/absolute value. */
- unsigned long int constant;
+ long 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;
+ /* The type of the expression. */
+ unsigned char X_op;
}
argument;
unsigned int bit_size;
/* Argument type. */
argtype arg_type;
+ /* One bit syntax flags. */
+ int flags;
}
operand_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 NUMTRAPS crx_num_traps
/* cst4 operand mapping. */
-extern const cst4_entry cst4_map[];
+extern const long cst4_map[];
extern const int cst4_maps;
+/* Table of instructions with no operands. */
+extern const char* no_op_insn[];
+
/* Current instruction we're assembling. */
extern const inst *instruction;
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