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
  32 typedef 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
  56 extern 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
  90 extern bool tcg_target_deposit_valid(int ofs, int len);
  91 #define TCG_TARGET_deposit_i32_valid  tcg_target_deposit_valid
  92
  93 enum {
  94     TCG_AREG0 = TCG_REG_R6,
  95 };
  96
  97 static 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