tcg/s390/tcg-target.h

   1 /*
   2  * Tiny Code Generator for QEMU
   3  *
   4  * Copyright (c) 2009 Ulrich Hecht <uli@suse.de>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #ifndef S390_TCG_TARGET_H
  26 #define S390_TCG_TARGET_H
  27
  28 #define TCG_TARGET_INSN_UNIT_SIZE 2
  29 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 19
  30
  31 /* We have a +- 4GB range on the branches; leave some slop.  */
  32 #define MAX_CODE_GEN_BUFFER_SIZE  (3 * GiB)
  33
  34 typedef enum TCGReg {
  35     TCG_REG_R0 = 0,
  36     TCG_REG_R1,
  37     TCG_REG_R2,
  38     TCG_REG_R3,
  39     TCG_REG_R4,
  40     TCG_REG_R5,
  41     TCG_REG_R6,
  42     TCG_REG_R7,
  43     TCG_REG_R8,
  44     TCG_REG_R9,
  45     TCG_REG_R10,
  46     TCG_REG_R11,
  47     TCG_REG_R12,
  48     TCG_REG_R13,
  49     TCG_REG_R14,
  50     TCG_REG_R15
  51 } TCGReg;
  52
  53 #define TCG_TARGET_NB_REGS 16
  54
  55 /* A list of relevant facilities used by this translator.  Some of these
  56    are required for proper operation, and these are checked at startup.  */
  57
  58 #define FACILITY_ZARCH_ACTIVE         (1ULL << (63 - 2))
  59 #define FACILITY_LONG_DISP            (1ULL << (63 - 18))
  60 #define FACILITY_EXT_IMM              (1ULL << (63 - 21))
  61 #define FACILITY_GEN_INST_EXT         (1ULL << (63 - 34))
  62 #define FACILITY_LOAD_ON_COND         (1ULL << (63 - 45))
  63 #define FACILITY_FAST_BCR_SER         FACILITY_LOAD_ON_COND
  64 #define FACILITY_DISTINCT_OPS         FACILITY_LOAD_ON_COND
  65 #define FACILITY_LOAD_ON_COND2        (1ULL << (63 - 53))
  66
  67 extern uint64_t s390_facilities;
  68
  69 /* optional instructions */
  70 #define TCG_TARGET_HAS_div2_i32       1
  71 #define TCG_TARGET_HAS_rot_i32        1
  72 #define TCG_TARGET_HAS_ext8s_i32      1
  73 #define TCG_TARGET_HAS_ext16s_i32     1
  74 #define TCG_TARGET_HAS_ext8u_i32      1
  75 #define TCG_TARGET_HAS_ext16u_i32     1
  76 #define TCG_TARGET_HAS_bswap16_i32    1
  77 #define TCG_TARGET_HAS_bswap32_i32    1
  78 #define TCG_TARGET_HAS_not_i32        0
  79 #define TCG_TARGET_HAS_neg_i32        1
  80 #define TCG_TARGET_HAS_andc_i32       0
  81 #define TCG_TARGET_HAS_orc_i32        0
  82 #define TCG_TARGET_HAS_eqv_i32        0
  83 #define TCG_TARGET_HAS_nand_i32       0
  84 #define TCG_TARGET_HAS_nor_i32        0
  85 #define TCG_TARGET_HAS_clz_i32        0
  86 #define TCG_TARGET_HAS_ctz_i32        0
  87 #define TCG_TARGET_HAS_ctpop_i32      0
  88 #define TCG_TARGET_HAS_deposit_i32    (s390_facilities & FACILITY_GEN_INST_EXT)
  89 #define TCG_TARGET_HAS_extract_i32    (s390_facilities & FACILITY_GEN_INST_EXT)
  90 #define TCG_TARGET_HAS_sextract_i32   0
  91 #define TCG_TARGET_HAS_extract2_i32   0
  92 #define TCG_TARGET_HAS_movcond_i32    1
  93 #define TCG_TARGET_HAS_add2_i32       1
  94 #define TCG_TARGET_HAS_sub2_i32       1
  95 #define TCG_TARGET_HAS_mulu2_i32      0
  96 #define TCG_TARGET_HAS_muls2_i32      0
  97 #define TCG_TARGET_HAS_muluh_i32      0
  98 #define TCG_TARGET_HAS_mulsh_i32      0
  99 #define TCG_TARGET_HAS_extrl_i64_i32  0
 100 #define TCG_TARGET_HAS_extrh_i64_i32  0
 101 #define TCG_TARGET_HAS_goto_ptr       1
 102 #define TCG_TARGET_HAS_direct_jump    (s390_facilities & FACILITY_GEN_INST_EXT)
 103 #define TCG_TARGET_HAS_qemu_st8_i32   0
 104
 105 #define TCG_TARGET_HAS_div2_i64       1
 106 #define TCG_TARGET_HAS_rot_i64        1
 107 #define TCG_TARGET_HAS_ext8s_i64      1
 108 #define TCG_TARGET_HAS_ext16s_i64     1
 109 #define TCG_TARGET_HAS_ext32s_i64     1
 110 #define TCG_TARGET_HAS_ext8u_i64      1
 111 #define TCG_TARGET_HAS_ext16u_i64     1
 112 #define TCG_TARGET_HAS_ext32u_i64     1
 113 #define TCG_TARGET_HAS_bswap16_i64    1
 114 #define TCG_TARGET_HAS_bswap32_i64    1
 115 #define TCG_TARGET_HAS_bswap64_i64    1
 116 #define TCG_TARGET_HAS_not_i64        0
 117 #define TCG_TARGET_HAS_neg_i64        1
 118 #define TCG_TARGET_HAS_andc_i64       0
 119 #define TCG_TARGET_HAS_orc_i64        0
 120 #define TCG_TARGET_HAS_eqv_i64        0
 121 #define TCG_TARGET_HAS_nand_i64       0
 122 #define TCG_TARGET_HAS_nor_i64        0
 123 #define TCG_TARGET_HAS_clz_i64        (s390_facilities & FACILITY_EXT_IMM)
 124 #define TCG_TARGET_HAS_ctz_i64        0
 125 #define TCG_TARGET_HAS_ctpop_i64      0
 126 #define TCG_TARGET_HAS_deposit_i64    (s390_facilities & FACILITY_GEN_INST_EXT)
 127 #define TCG_TARGET_HAS_extract_i64    (s390_facilities & FACILITY_GEN_INST_EXT)
 128 #define TCG_TARGET_HAS_sextract_i64   0
 129 #define TCG_TARGET_HAS_extract2_i64   0
 130 #define TCG_TARGET_HAS_movcond_i64    1
 131 #define TCG_TARGET_HAS_add2_i64       1
 132 #define TCG_TARGET_HAS_sub2_i64       1
 133 #define TCG_TARGET_HAS_mulu2_i64      1
 134 #define TCG_TARGET_HAS_muls2_i64      0
 135 #define TCG_TARGET_HAS_muluh_i64      0
 136 #define TCG_TARGET_HAS_mulsh_i64      0
 137
 138 /* used for function call generation */
 139 #define TCG_REG_CALL_STACK              TCG_REG_R15
 140 #define TCG_TARGET_STACK_ALIGN          8
 141 #define TCG_TARGET_CALL_STACK_OFFSET    160
 142
 143 #define TCG_TARGET_EXTEND_ARGS 1
 144 #define TCG_TARGET_HAS_MEMORY_BSWAP   1
 145
 146 #define TCG_TARGET_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD)
 147
 148 enum {
 149     TCG_AREG0 = TCG_REG_R10,
 150 };
 151
 152 static inline void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
 153                                             uintptr_t jmp_rw, uintptr_t addr)
 154 {
 155     /* patch the branch destination */
 156     intptr_t disp = addr - (jmp_rx - 2);
 157     qatomic_set((int32_t *)jmp_rw, disp / 2);
 158     /* no need to flush icache explicitly */
 159 }
 160
 161 #ifdef CONFIG_SOFTMMU
 162 #define TCG_TARGET_NEED_LDST_LABELS
 163 #endif
 164 #define TCG_TARGET_NEED_POOL_LABELS
 165
 166 #endif