tcg-target.h (6452B)
1/* 2 * Tiny Code Generator for QEMU 3 * 4 * Copyright (c) 2009, 2011 Stefan Weil 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/* 26 * This code implements a TCG which does not generate machine code for some 27 * real target machine but which generates virtual machine code for an 28 * interpreter. Interpreted pseudo code is slow, but it works on any host. 29 * 30 * Some remarks might help in understanding the code: 31 * 32 * "target" or "TCG target" is the machine which runs the generated code. 33 * This is different to the usual meaning in QEMU where "target" is the 34 * emulated machine. So normally QEMU host is identical to TCG target. 35 * Here the TCG target is a virtual machine, but this virtual machine must 36 * use the same word size like the real machine. 37 * Therefore, we need both 32 and 64 bit virtual machines (interpreter). 38 */ 39 40#ifndef TCG_TARGET_H 41#define TCG_TARGET_H 42 43#define TCG_TARGET_INTERPRETER 1 44#define TCG_TARGET_INSN_UNIT_SIZE 4 45#define TCG_TARGET_TLB_DISPLACEMENT_BITS 32 46#define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1) 47 48#if UINTPTR_MAX == UINT32_MAX 49# define TCG_TARGET_REG_BITS 32 50#elif UINTPTR_MAX == UINT64_MAX 51# define TCG_TARGET_REG_BITS 64 52#else 53# error Unknown pointer size for tci target 54#endif 55 56#ifdef CONFIG_DEBUG_TCG 57/* Enable debug output. */ 58#define CONFIG_DEBUG_TCG_INTERPRETER 59#endif 60 61/* Optional instructions. */ 62 63#define TCG_TARGET_HAS_bswap16_i32 1 64#define TCG_TARGET_HAS_bswap32_i32 1 65#define TCG_TARGET_HAS_div_i32 1 66#define TCG_TARGET_HAS_rem_i32 1 67#define TCG_TARGET_HAS_ext8s_i32 1 68#define TCG_TARGET_HAS_ext16s_i32 1 69#define TCG_TARGET_HAS_ext8u_i32 1 70#define TCG_TARGET_HAS_ext16u_i32 1 71#define TCG_TARGET_HAS_andc_i32 1 72#define TCG_TARGET_HAS_deposit_i32 1 73#define TCG_TARGET_HAS_extract_i32 1 74#define TCG_TARGET_HAS_sextract_i32 1 75#define TCG_TARGET_HAS_extract2_i32 0 76#define TCG_TARGET_HAS_eqv_i32 1 77#define TCG_TARGET_HAS_nand_i32 1 78#define TCG_TARGET_HAS_nor_i32 1 79#define TCG_TARGET_HAS_clz_i32 1 80#define TCG_TARGET_HAS_ctz_i32 1 81#define TCG_TARGET_HAS_ctpop_i32 1 82#define TCG_TARGET_HAS_neg_i32 1 83#define TCG_TARGET_HAS_not_i32 1 84#define TCG_TARGET_HAS_orc_i32 1 85#define TCG_TARGET_HAS_rot_i32 1 86#define TCG_TARGET_HAS_movcond_i32 1 87#define TCG_TARGET_HAS_muls2_i32 1 88#define TCG_TARGET_HAS_muluh_i32 0 89#define TCG_TARGET_HAS_mulsh_i32 0 90#define TCG_TARGET_HAS_direct_jump 0 91#define TCG_TARGET_HAS_qemu_st8_i32 0 92 93#if TCG_TARGET_REG_BITS == 64 94#define TCG_TARGET_HAS_extrl_i64_i32 0 95#define TCG_TARGET_HAS_extrh_i64_i32 0 96#define TCG_TARGET_HAS_bswap16_i64 1 97#define TCG_TARGET_HAS_bswap32_i64 1 98#define TCG_TARGET_HAS_bswap64_i64 1 99#define TCG_TARGET_HAS_deposit_i64 1 100#define TCG_TARGET_HAS_extract_i64 1 101#define TCG_TARGET_HAS_sextract_i64 1 102#define TCG_TARGET_HAS_extract2_i64 0 103#define TCG_TARGET_HAS_div_i64 1 104#define TCG_TARGET_HAS_rem_i64 1 105#define TCG_TARGET_HAS_ext8s_i64 1 106#define TCG_TARGET_HAS_ext16s_i64 1 107#define TCG_TARGET_HAS_ext32s_i64 1 108#define TCG_TARGET_HAS_ext8u_i64 1 109#define TCG_TARGET_HAS_ext16u_i64 1 110#define TCG_TARGET_HAS_ext32u_i64 1 111#define TCG_TARGET_HAS_andc_i64 1 112#define TCG_TARGET_HAS_eqv_i64 1 113#define TCG_TARGET_HAS_nand_i64 1 114#define TCG_TARGET_HAS_nor_i64 1 115#define TCG_TARGET_HAS_clz_i64 1 116#define TCG_TARGET_HAS_ctz_i64 1 117#define TCG_TARGET_HAS_ctpop_i64 1 118#define TCG_TARGET_HAS_neg_i64 1 119#define TCG_TARGET_HAS_not_i64 1 120#define TCG_TARGET_HAS_orc_i64 1 121#define TCG_TARGET_HAS_rot_i64 1 122#define TCG_TARGET_HAS_movcond_i64 1 123#define TCG_TARGET_HAS_muls2_i64 1 124#define TCG_TARGET_HAS_add2_i32 1 125#define TCG_TARGET_HAS_sub2_i32 1 126#define TCG_TARGET_HAS_mulu2_i32 1 127#define TCG_TARGET_HAS_add2_i64 1 128#define TCG_TARGET_HAS_sub2_i64 1 129#define TCG_TARGET_HAS_mulu2_i64 1 130#define TCG_TARGET_HAS_muluh_i64 0 131#define TCG_TARGET_HAS_mulsh_i64 0 132#else 133#define TCG_TARGET_HAS_mulu2_i32 1 134#endif /* TCG_TARGET_REG_BITS == 64 */ 135 136/* Number of registers available. */ 137#define TCG_TARGET_NB_REGS 16 138 139/* List of registers which are used by TCG. */ 140typedef enum { 141 TCG_REG_R0 = 0, 142 TCG_REG_R1, 143 TCG_REG_R2, 144 TCG_REG_R3, 145 TCG_REG_R4, 146 TCG_REG_R5, 147 TCG_REG_R6, 148 TCG_REG_R7, 149 TCG_REG_R8, 150 TCG_REG_R9, 151 TCG_REG_R10, 152 TCG_REG_R11, 153 TCG_REG_R12, 154 TCG_REG_R13, 155 TCG_REG_R14, 156 TCG_REG_R15, 157 158 TCG_REG_TMP = TCG_REG_R13, 159 TCG_AREG0 = TCG_REG_R14, 160 TCG_REG_CALL_STACK = TCG_REG_R15, 161} TCGReg; 162 163/* Used for function call generation. */ 164#define TCG_TARGET_CALL_STACK_OFFSET 0 165#define TCG_TARGET_STACK_ALIGN 8 166 167#define HAVE_TCG_QEMU_TB_EXEC 168#define TCG_TARGET_NEED_POOL_LABELS 169 170/* We could notice __i386__ or __s390x__ and reduce the barriers depending 171 on the host. But if you want performance, you use the normal backend. 172 We prefer consistency across hosts on this. */ 173#define TCG_TARGET_DEFAULT_MO (0) 174 175#define TCG_TARGET_HAS_MEMORY_BSWAP 1 176 177/* not defined -- call should be eliminated at compile time */ 178void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t, uintptr_t); 179 180#endif /* TCG_TARGET_H */