LXR qemu/tcg/arm/tcg-target.h

   1/*
   2 * Tiny Code Generator for QEMU
   3 *
   4 * Copyright (c) 2008 Fabrice Bellard
   5 * Copyright (c) 2008 Andrzej Zaborowski
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25#ifndef TCG_TARGET_ARM 
  26#define TCG_TARGET_ARM 1
  27
  28#undef TCG_TARGET_STACK_GROWSUP
  29#define TCG_TARGET_INSN_UNIT_SIZE 4
  30#define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
  31
  32typedef enum {
  33    TCG_REG_R0 = 0,
  34    TCG_REG_R1,
  35    TCG_REG_R2,
  36    TCG_REG_R3,
  37    TCG_REG_R4,
  38    TCG_REG_R5,
  39    TCG_REG_R6,
  40    TCG_REG_R7,
  41    TCG_REG_R8,
  42    TCG_REG_R9,
  43    TCG_REG_R10,
  44    TCG_REG_R11,
  45    TCG_REG_R12,
  46    TCG_REG_R13,
  47    TCG_REG_R14,
  48    TCG_REG_PC,
  49} TCGReg;
  50
  51#define TCG_TARGET_NB_REGS 16
  52
  53#ifdef __ARM_ARCH_EXT_IDIV__
  54#define use_idiv_instructions  1
  55#else
  56extern bool use_idiv_instructions;
  57#endif
  58
  59
  60/* used for function call generation */
  61#define TCG_REG_CALL_STACK              TCG_REG_R13
  62#define TCG_TARGET_STACK_ALIGN          8
  63#define TCG_TARGET_CALL_ALIGN_ARGS      1
  64#define TCG_TARGET_CALL_STACK_OFFSET    0
  65
  66/* optional instructions */
  67#define TCG_TARGET_HAS_ext8s_i32        1
  68#define TCG_TARGET_HAS_ext16s_i32       1
  69#define TCG_TARGET_HAS_ext8u_i32        0 /* and r0, r1, #0xff */
  70#define TCG_TARGET_HAS_ext16u_i32       1
  71#define TCG_TARGET_HAS_bswap16_i32      1
  72#define TCG_TARGET_HAS_bswap32_i32      1
  73#define TCG_TARGET_HAS_not_i32          1
  74#define TCG_TARGET_HAS_neg_i32          1
  75#define TCG_TARGET_HAS_rot_i32          1
  76#define TCG_TARGET_HAS_andc_i32         1
  77#define TCG_TARGET_HAS_orc_i32          0
  78#define TCG_TARGET_HAS_eqv_i32          0
  79#define TCG_TARGET_HAS_nand_i32         0
  80#define TCG_TARGET_HAS_nor_i32          0
  81#define TCG_TARGET_HAS_deposit_i32      1
  82#define TCG_TARGET_HAS_movcond_i32      1
  83#define TCG_TARGET_HAS_mulu2_i32        1
  84#define TCG_TARGET_HAS_muls2_i32        1
  85#define TCG_TARGET_HAS_muluh_i32        0
  86#define TCG_TARGET_HAS_mulsh_i32        0
  87#define TCG_TARGET_HAS_div_i32          use_idiv_instructions
  88#define TCG_TARGET_HAS_rem_i32          0
  89
  90extern bool tcg_target_deposit_valid(int ofs, int len);
  91#define TCG_TARGET_deposit_i32_valid  tcg_target_deposit_valid
  92
  93enum {
  94    TCG_AREG0 = TCG_REG_R6,
  95};
  96
  97static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
  98{
  99#if QEMU_GNUC_PREREQ(4, 1)
 100    __builtin___clear_cache((char *) start, (char *) stop);
 101#else
 102    register uintptr_t _beg __asm("a1") = start;
 103    register uintptr_t _end __asm("a2") = stop;
 104    register uintptr_t _flg __asm("a3") = 0;
 105    __asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));
 106#endif
 107}
 108
 109#endif
 110