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

   1/*
   2 * Tiny Code Generator for QEMU
   3 *
   4 * Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
   5 * Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
   6 * Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard
   7 *
   8 * Permission is hereby granted, free of charge, to any person obtaining a copy
   9 * of this software and associated documentation files (the "Software"), to deal
  10 * in the Software without restriction, including without limitation the rights
  11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 * copies of the Software, and to permit persons to whom the Software is
  13 * furnished to do so, subject to the following conditions:
  14 *
  15 * The above copyright notice and this permission notice shall be included in
  16 * all copies or substantial portions of the Software.
  17 *
  18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 * THE SOFTWARE.
  25 */
  26#ifndef TCG_TARGET_MIPS 
  27#define TCG_TARGET_MIPS 1
  28
  29#define TCG_TARGET_INSN_UNIT_SIZE 4
  30#define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
  31#define TCG_TARGET_NB_REGS 32
  32
  33typedef enum {
  34    TCG_REG_ZERO = 0,
  35    TCG_REG_AT,
  36    TCG_REG_V0,
  37    TCG_REG_V1,
  38    TCG_REG_A0,
  39    TCG_REG_A1,
  40    TCG_REG_A2,
  41    TCG_REG_A3,
  42    TCG_REG_T0,
  43    TCG_REG_T1,
  44    TCG_REG_T2,
  45    TCG_REG_T3,
  46    TCG_REG_T4,
  47    TCG_REG_T5,
  48    TCG_REG_T6,
  49    TCG_REG_T7,
  50    TCG_REG_S0,
  51    TCG_REG_S1,
  52    TCG_REG_S2,
  53    TCG_REG_S3,
  54    TCG_REG_S4,
  55    TCG_REG_S5,
  56    TCG_REG_S6,
  57    TCG_REG_S7,
  58    TCG_REG_T8,
  59    TCG_REG_T9,
  60    TCG_REG_K0,
  61    TCG_REG_K1,
  62    TCG_REG_GP,
  63    TCG_REG_SP,
  64    TCG_REG_S8,
  65    TCG_REG_RA,
  66
  67    TCG_REG_CALL_STACK = TCG_REG_SP,
  68    TCG_AREG0 = TCG_REG_S0,
  69} TCGReg;
  70
  71/* used for function call generation */
  72#define TCG_TARGET_STACK_ALIGN 8
  73#define TCG_TARGET_CALL_STACK_OFFSET 16
  74#define TCG_TARGET_CALL_ALIGN_ARGS 1
  75
  76/* MOVN/MOVZ instructions detection */
  77#if (defined(__mips_isa_rev) && (__mips_isa_rev >= 1)) || \
  78    defined(_MIPS_ARCH_LOONGSON2E) || defined(_MIPS_ARCH_LOONGSON2F) || \
  79    defined(_MIPS_ARCH_MIPS4)
  80#define use_movnz_instructions  1
  81#else
  82extern bool use_movnz_instructions;
  83#endif
  84
  85/* MIPS32 instruction set detection */
  86#if defined(__mips_isa_rev) && (__mips_isa_rev >= 1)
  87#define use_mips32_instructions  1
  88#else
  89extern bool use_mips32_instructions;
  90#endif
  91
  92/* MIPS32R2 instruction set detection */
  93#if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
  94#define use_mips32r2_instructions  1
  95#else
  96extern bool use_mips32r2_instructions;
  97#endif
  98
  99/* MIPS32R6 instruction set detection */
 100#if defined(__mips_isa_rev) && (__mips_isa_rev >= 6)
 101#define use_mips32r6_instructions  1
 102#else
 103#define use_mips32r6_instructions  0
 104#endif
 105
 106/* optional instructions */
 107#define TCG_TARGET_HAS_div_i32          1
 108#define TCG_TARGET_HAS_rem_i32          1
 109#define TCG_TARGET_HAS_not_i32          1
 110#define TCG_TARGET_HAS_nor_i32          1
 111#define TCG_TARGET_HAS_andc_i32         0
 112#define TCG_TARGET_HAS_orc_i32          0
 113#define TCG_TARGET_HAS_eqv_i32          0
 114#define TCG_TARGET_HAS_nand_i32         0
 115#define TCG_TARGET_HAS_mulu2_i32        (!use_mips32r6_instructions)
 116#define TCG_TARGET_HAS_muls2_i32        (!use_mips32r6_instructions)
 117#define TCG_TARGET_HAS_muluh_i32        1
 118#define TCG_TARGET_HAS_mulsh_i32        1
 119
 120/* optional instructions detected at runtime */
 121#define TCG_TARGET_HAS_movcond_i32      use_movnz_instructions
 122#define TCG_TARGET_HAS_bswap16_i32      use_mips32r2_instructions
 123#define TCG_TARGET_HAS_bswap32_i32      use_mips32r2_instructions
 124#define TCG_TARGET_HAS_deposit_i32      use_mips32r2_instructions
 125#define TCG_TARGET_HAS_ext8s_i32        use_mips32r2_instructions
 126#define TCG_TARGET_HAS_ext16s_i32       use_mips32r2_instructions
 127#define TCG_TARGET_HAS_rot_i32          use_mips32r2_instructions
 128
 129/* optional instructions automatically implemented */
 130#define TCG_TARGET_HAS_neg_i32          0 /* sub  rd, zero, rt   */
 131#define TCG_TARGET_HAS_ext8u_i32        0 /* andi rt, rs, 0xff   */
 132#define TCG_TARGET_HAS_ext16u_i32       0 /* andi rt, rs, 0xffff */
 133
 134#ifdef __OpenBSD__
 135#include <machine/sysarch.h>
 136#else
 137#include <sys/cachectl.h>
 138#endif
 139
 140static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
 141{
 142    cacheflush ((void *)start, stop-start, ICACHE);
 143}
 144
 145#endif
 146