Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

  1. /* d10v.h -- Header file for D10V opcode table
  2.    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2010
  3.    Free Software Foundation, Inc.
  4.    Written by Martin Hunt (hunt@cygnus.com), Cygnus Support
  5.  
  6.    This file is part of GDB, GAS, and the GNU binutils.
  7.  
  8.    GDB, GAS, and the GNU binutils are free software; you can redistribute
  9.    them and/or modify them under the terms of the GNU General Public
  10.    License as published by the Free Software Foundation; either version 3,
  11.    or (at your option) any later version.
  12.  
  13.    GDB, GAS, and the GNU binutils are distributed in the hope that they
  14.    will be useful, but WITHOUT ANY WARRANTY; without even the implied
  15.    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16.    the GNU General Public License for more details.
  17.  
  18.    You should have received a copy of the GNU General Public License
  19.    along with this file; see the file COPYING3.  If not, write to the Free
  20.    Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  21.    MA 02110-1301, USA.  */
  22.  
  23. #ifndef D10V_H
  24. #define D10V_H
  25.  
  26. /* Format Specifier */
  27. #define FM00    0
  28. #define FM01    0x40000000
  29. #define FM10    0x80000000
  30. #define FM11    0xC0000000
  31.  
  32. #define NOP 0x5e00
  33. #define OPCODE_DIVS     0x14002800
  34.  
  35. /* The opcode table is an array of struct d10v_opcode.  */
  36.  
  37. struct d10v_opcode
  38. {
  39.   /* The opcode name.  */
  40.   const char *name;
  41.  
  42.   /* the opcode format */
  43.   int format;
  44.  
  45.   /* These numbers were picked so we can do if( i & SHORT_OPCODE) */
  46. #define SHORT_OPCODE 1
  47. #define LONG_OPCODE  8
  48. #define SHORT_2      1          /* short with 2 operands */
  49. #define SHORT_B      3          /* short with 8-bit branch */
  50. #define LONG_B       8          /* long with 16-bit branch */
  51. #define LONG_L       10         /* long with 3 operands */
  52. #define LONG_R       12         /* reserved */
  53.  
  54.   /* just a placeholder for variable-length instructions */
  55.   /* for example, "bra" will be a fake for "bra.s" and bra.l" */
  56.   /* which will immediately follow in the opcode table.  */
  57. #define OPCODE_FAKE  32
  58.  
  59.   /* the number of cycles */
  60.   int cycles;
  61.  
  62.   /* the execution unit(s) used */
  63.   int unit;
  64. #define EITHER  0
  65. #define IU      1
  66. #define MU      2
  67. #define BOTH    3
  68.  
  69.   /* execution type; parallel or sequential */
  70.   /* this field is used to decide if two instructions */
  71.   /* can be executed in parallel */
  72.   int exec_type;
  73. #define PARONLY 1       /* parallel only */
  74. #define SEQ     2       /* must be sequential */
  75. #define PAR     4       /* may be parallel */
  76. #define BRANCH_LINK 8   /* subroutine call.  must be aligned */
  77. #define RMEM     16     /* reads memory */
  78. #define WMEM     32     /* writes memory */
  79. #define RF0      64     /* reads f0 */
  80. #define WF0     128     /* modifies f0 */
  81. #define WCAR    256     /* write Carry */
  82. #define BRANCH  512     /* branch, no link */
  83. #define ALONE  1024     /* short but pack with a NOP if on asm line alone */
  84.  
  85.   /* the opcode */
  86.   long opcode;
  87.  
  88.   /* mask.  if( (i & mask) == opcode ) then match */
  89.   long mask;
  90.  
  91.   /* An array of operand codes.  Each code is an index into the
  92.      operand table.  They appear in the order which the operands must
  93.      appear in assembly code, and are terminated by a zero.  */
  94.   unsigned char operands[6];
  95. };
  96.  
  97. /* The table itself is sorted by major opcode number, and is otherwise
  98.    in the order in which the disassembler should consider
  99.    instructions.  */
  100. extern const struct d10v_opcode d10v_opcodes[];
  101. extern const int d10v_num_opcodes;
  102.  
  103. /* The operands table is an array of struct d10v_operand.  */
  104. struct d10v_operand
  105. {
  106.   /* The number of bits in the operand.  */
  107.   int bits;
  108.  
  109.   /* How far the operand is left shifted in the instruction.  */
  110.   int shift;
  111.  
  112.   /* One bit syntax flags.  */
  113.   int flags;
  114. };
  115.  
  116. /* Elements in the table are retrieved by indexing with values from
  117.    the operands field of the d10v_opcodes table.  */
  118.  
  119. extern const struct d10v_operand d10v_operands[];
  120.  
  121. /* Values defined for the flags field of a struct d10v_operand.  */
  122.  
  123. /* the operand must be an even number */
  124. #define OPERAND_EVEN    (1)
  125.  
  126. /* the operand must be an odd number */
  127. #define OPERAND_ODD     (2)    
  128.  
  129. /* this is the destination register; it will be modified */
  130. /* this is used by the optimizer */
  131. #define OPERAND_DEST    (4)
  132.  
  133. /* number or symbol */
  134. #define OPERAND_NUM     (8)
  135.  
  136. /* address or label */
  137. #define OPERAND_ADDR    (0x10)
  138.  
  139. /* register */
  140. #define OPERAND_REG     (0x20)
  141.  
  142. /* postincrement +  */
  143. #define OPERAND_PLUS    (0x40)
  144.  
  145. /* postdecrement -  */
  146. #define OPERAND_MINUS   (0x80)
  147.  
  148. /* @  */
  149. #define OPERAND_ATSIGN  (0x100)
  150.  
  151. /* @(  */
  152. #define OPERAND_ATPAR   (0x200)
  153.  
  154. /* accumulator 0 */
  155. #define OPERAND_ACC0    (0x400)
  156.  
  157. /* accumulator 1 */
  158. #define OPERAND_ACC1    (0x800)
  159.  
  160. /* f0 / f1 flag register */
  161. #define OPERAND_FFLAG   (0x1000)
  162.  
  163. /* c flag register */
  164. #define OPERAND_CFLAG   (0x2000)
  165.  
  166. /* control register  */
  167. #define OPERAND_CONTROL (0x4000)
  168.  
  169. /* predecrement mode '@-sp'  */
  170. #define OPERAND_ATMINUS (0x8000)
  171.  
  172. /* signed number */
  173. #define OPERAND_SIGNED  (0x10000)
  174.  
  175. /* special accumulator shifts need a 4-bit number */
  176. /* 1 <= x <= 16 */
  177. #define OPERAND_SHIFT   (0x20000)
  178.  
  179. /* general purpose register */
  180. #define OPERAND_GPR     (0x40000)
  181.  
  182. /* special imm3 values with range restricted to -2 <= imm3 <= 3 */
  183. /* needed for rac/rachi */
  184. #define RESTRICTED_NUM3 (0x80000)
  185.  
  186. /* Pre-decrement is only supported for SP.  */
  187. #define OPERAND_SP      (0x100000)
  188.  
  189. /* Post-decrement is not supported for SP.  Like OPERAND_EVEN, and
  190.    unlike OPERAND_SP, this flag doesn't prevent the instruction from
  191.    matching, it only fails validation later on.  */
  192. #define OPERAND_NOSP    (0x200000)
  193.  
  194. /* Structure to hold information about predefined registers.  */
  195. struct pd_reg
  196. {
  197.   char *name;           /* name to recognize */
  198.   char *pname;          /* name to print for this register */
  199.   int value;
  200. };
  201.  
  202. extern const struct pd_reg d10v_predefined_registers[];
  203. int d10v_reg_name_cnt (void);
  204.  
  205. /* an expressionS only has one register type, so we fake it */
  206. /* by setting high bits to indicate type */
  207. #define REGISTER_MASK   0xFF
  208.  
  209. #endif /* D10V_H */
  210.