tcg/i386/tcg-target.h - third_party/qemu - Git at Google

 /*
  * Tiny Code Generator for QEMU
  *
  * Copyright (c) 2008 Fabrice Bellard
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */

 #ifndef I386_TCG_TARGET_H
 #define I386_TCG_TARGET_H

 #define TCG_TARGET_INSN_UNIT_SIZE  1
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 31

 #ifdef __x86_64__
 # define TCG_TARGET_REG_BITS  64
 # define TCG_TARGET_NB_REGS   32
 # define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
 #else
 # define TCG_TARGET_REG_BITS  32
 # define TCG_TARGET_NB_REGS   24
 # define MAX_CODE_GEN_BUFFER_SIZE  UINT32_MAX
 #endif

 typedef enum {
     TCG_REG_EAX = 0,
     TCG_REG_ECX,
     TCG_REG_EDX,
     TCG_REG_EBX,
     TCG_REG_ESP,
     TCG_REG_EBP,
     TCG_REG_ESI,
     TCG_REG_EDI,

     /* 64-bit registers; always define the symbols to avoid
        too much if-deffing.  */
     TCG_REG_R8,
     TCG_REG_R9,
     TCG_REG_R10,
     TCG_REG_R11,
     TCG_REG_R12,
     TCG_REG_R13,
     TCG_REG_R14,
     TCG_REG_R15,

     TCG_REG_XMM0,
     TCG_REG_XMM1,
     TCG_REG_XMM2,
     TCG_REG_XMM3,
     TCG_REG_XMM4,
     TCG_REG_XMM5,
     TCG_REG_XMM6,
     TCG_REG_XMM7,

     /* 64-bit registers; likewise always define.  */
     TCG_REG_XMM8,
     TCG_REG_XMM9,
     TCG_REG_XMM10,
     TCG_REG_XMM11,
     TCG_REG_XMM12,
     TCG_REG_XMM13,
     TCG_REG_XMM14,
     TCG_REG_XMM15,

     TCG_REG_RAX = TCG_REG_EAX,
     TCG_REG_RCX = TCG_REG_ECX,
     TCG_REG_RDX = TCG_REG_EDX,
     TCG_REG_RBX = TCG_REG_EBX,
     TCG_REG_RSP = TCG_REG_ESP,
     TCG_REG_RBP = TCG_REG_EBP,
     TCG_REG_RSI = TCG_REG_ESI,
     TCG_REG_RDI = TCG_REG_EDI,

     TCG_AREG0 = TCG_REG_EBP,
     TCG_REG_CALL_STACK = TCG_REG_ESP
 } TCGReg;

 /* used for function call generation */
 #define TCG_TARGET_STACK_ALIGN 16
 #if defined(_WIN64)
 #define TCG_TARGET_CALL_STACK_OFFSET 32
 #else
 #define TCG_TARGET_CALL_STACK_OFFSET 0
 #endif

 extern bool have_bmi1;
 extern bool have_popcnt;
 extern bool have_avx1;
 extern bool have_avx2;
 extern bool have_avx512bw;
 extern bool have_avx512dq;
 extern bool have_avx512vbmi2;
 extern bool have_avx512vl;
 extern bool have_movbe;

 /* optional instructions */
 #define TCG_TARGET_HAS_div2_i32         1
 #define TCG_TARGET_HAS_rot_i32          1
 #define TCG_TARGET_HAS_ext8s_i32        1
 #define TCG_TARGET_HAS_ext16s_i32       1
 #define TCG_TARGET_HAS_ext8u_i32        1
 #define TCG_TARGET_HAS_ext16u_i32       1
 #define TCG_TARGET_HAS_bswap16_i32      1
 #define TCG_TARGET_HAS_bswap32_i32      1
 #define TCG_TARGET_HAS_neg_i32          1
 #define TCG_TARGET_HAS_not_i32          1
 #define TCG_TARGET_HAS_andc_i32         have_bmi1
 #define TCG_TARGET_HAS_orc_i32          0
 #define TCG_TARGET_HAS_eqv_i32          0
 #define TCG_TARGET_HAS_nand_i32         0
 #define TCG_TARGET_HAS_nor_i32          0
 #define TCG_TARGET_HAS_clz_i32          1
 #define TCG_TARGET_HAS_ctz_i32          1
 #define TCG_TARGET_HAS_ctpop_i32        have_popcnt
 #define TCG_TARGET_HAS_deposit_i32      1
 #define TCG_TARGET_HAS_extract_i32      1
 #define TCG_TARGET_HAS_sextract_i32     1
 #define TCG_TARGET_HAS_extract2_i32     1
 #define TCG_TARGET_HAS_movcond_i32      1
 #define TCG_TARGET_HAS_add2_i32         1
 #define TCG_TARGET_HAS_sub2_i32         1
 #define TCG_TARGET_HAS_mulu2_i32        1
 #define TCG_TARGET_HAS_muls2_i32        1
 #define TCG_TARGET_HAS_muluh_i32        0
 #define TCG_TARGET_HAS_mulsh_i32        0
 #define TCG_TARGET_HAS_direct_jump      1

 #if TCG_TARGET_REG_BITS == 64
 /* Keep target addresses zero-extended in a register.  */
 #define TCG_TARGET_HAS_extrl_i64_i32    (TARGET_LONG_BITS == 32)
 #define TCG_TARGET_HAS_extrh_i64_i32    (TARGET_LONG_BITS == 32)
 #define TCG_TARGET_HAS_div2_i64         1
 #define TCG_TARGET_HAS_rot_i64          1
 #define TCG_TARGET_HAS_ext8s_i64        1
 #define TCG_TARGET_HAS_ext16s_i64       1
 #define TCG_TARGET_HAS_ext32s_i64       1
 #define TCG_TARGET_HAS_ext8u_i64        1
 #define TCG_TARGET_HAS_ext16u_i64       1
 #define TCG_TARGET_HAS_ext32u_i64       1
 #define TCG_TARGET_HAS_bswap16_i64      1
 #define TCG_TARGET_HAS_bswap32_i64      1
 #define TCG_TARGET_HAS_bswap64_i64      1
 #define TCG_TARGET_HAS_neg_i64          1
 #define TCG_TARGET_HAS_not_i64          1
 #define TCG_TARGET_HAS_andc_i64         have_bmi1
 #define TCG_TARGET_HAS_orc_i64          0
 #define TCG_TARGET_HAS_eqv_i64          0
 #define TCG_TARGET_HAS_nand_i64         0
 #define TCG_TARGET_HAS_nor_i64          0
 #define TCG_TARGET_HAS_clz_i64          1
 #define TCG_TARGET_HAS_ctz_i64          1
 #define TCG_TARGET_HAS_ctpop_i64        have_popcnt
 #define TCG_TARGET_HAS_deposit_i64      1
 #define TCG_TARGET_HAS_extract_i64      1
 #define TCG_TARGET_HAS_sextract_i64     0
 #define TCG_TARGET_HAS_extract2_i64     1
 #define TCG_TARGET_HAS_movcond_i64      1
 #define TCG_TARGET_HAS_add2_i64         1
 #define TCG_TARGET_HAS_sub2_i64         1
 #define TCG_TARGET_HAS_mulu2_i64        1
 #define TCG_TARGET_HAS_muls2_i64        1
 #define TCG_TARGET_HAS_muluh_i64        0
 #define TCG_TARGET_HAS_mulsh_i64        0
 #define TCG_TARGET_HAS_qemu_st8_i32     0
 #else
 #define TCG_TARGET_HAS_qemu_st8_i32     1
 #endif

 /* We do not support older SSE systems, only beginning with AVX1.  */
 #define TCG_TARGET_HAS_v64              have_avx1
 #define TCG_TARGET_HAS_v128             have_avx1
 #define TCG_TARGET_HAS_v256             have_avx2

 #define TCG_TARGET_HAS_andc_vec         1
 #define TCG_TARGET_HAS_orc_vec          have_avx512vl
 #define TCG_TARGET_HAS_nand_vec         have_avx512vl
 #define TCG_TARGET_HAS_nor_vec          have_avx512vl
 #define TCG_TARGET_HAS_eqv_vec          have_avx512vl
 #define TCG_TARGET_HAS_not_vec          have_avx512vl
 #define TCG_TARGET_HAS_neg_vec          0
 #define TCG_TARGET_HAS_abs_vec          1
 #define TCG_TARGET_HAS_roti_vec         have_avx512vl
 #define TCG_TARGET_HAS_rots_vec         0
 #define TCG_TARGET_HAS_rotv_vec         have_avx512vl
 #define TCG_TARGET_HAS_shi_vec          1
 #define TCG_TARGET_HAS_shs_vec          1
 #define TCG_TARGET_HAS_shv_vec          have_avx2
 #define TCG_TARGET_HAS_mul_vec          1
 #define TCG_TARGET_HAS_sat_vec          1
 #define TCG_TARGET_HAS_minmax_vec       1
 #define TCG_TARGET_HAS_bitsel_vec       have_avx512vl
 #define TCG_TARGET_HAS_cmpsel_vec       -1

 #define TCG_TARGET_deposit_i32_valid(ofs, len) \
     (((ofs) == 0 && (len) == 8) || ((ofs) == 8 && (len) == 8) || \
      ((ofs) == 0 && (len) == 16))
 #define TCG_TARGET_deposit_i64_valid    TCG_TARGET_deposit_i32_valid

 /* Check for the possibility of high-byte extraction and, for 64-bit,
    zero-extending 32-bit right-shift.  */
 #define TCG_TARGET_extract_i32_valid(ofs, len) ((ofs) == 8 && (len) == 8)
 #define TCG_TARGET_extract_i64_valid(ofs, len) \
     (((ofs) == 8 && (len) == 8) || ((ofs) + (len)) == 32)

 static inline void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
                                             uintptr_t jmp_rw, uintptr_t addr)
 {
     /* patch the branch destination */
     qatomic_set((int32_t *)jmp_rw, addr - (jmp_rx + 4));
     /* no need to flush icache explicitly */
 }

 /* This defines the natural memory order supported by this
  * architecture before guarantees made by various barrier
  * instructions.
  *
  * The x86 has a pretty strong memory ordering which only really
  * allows for some stores to be re-ordered after loads.
  */
 #include "tcg/tcg-mo.h"

 #define TCG_TARGET_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD)

 #define TCG_TARGET_HAS_MEMORY_BSWAP  have_movbe

 #define TCG_TARGET_NEED_LDST_LABELS
 #define TCG_TARGET_NEED_POOL_LABELS

 #endif
	/*
	* Tiny Code Generator for QEMU
	*
	* Copyright (c) 2008 Fabrice Bellard
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*/

	#ifndef I386_TCG_TARGET_H
	#define I386_TCG_TARGET_H

	#define TCG_TARGET_INSN_UNIT_SIZE 1
	#define TCG_TARGET_TLB_DISPLACEMENT_BITS 31

	#ifdef __x86_64__
	# define TCG_TARGET_REG_BITS 64
	# define TCG_TARGET_NB_REGS 32
	# define MAX_CODE_GEN_BUFFER_SIZE (2 * GiB)
	#else
	# define TCG_TARGET_REG_BITS 32
	# define TCG_TARGET_NB_REGS 24
	# define MAX_CODE_GEN_BUFFER_SIZE UINT32_MAX
	#endif

	typedef enum {
	TCG_REG_EAX = 0,
	TCG_REG_ECX,
	TCG_REG_EDX,
	TCG_REG_EBX,
	TCG_REG_ESP,
	TCG_REG_EBP,
	TCG_REG_ESI,
	TCG_REG_EDI,

	/* 64-bit registers; always define the symbols to avoid
	too much if-deffing. */
	TCG_REG_R8,
	TCG_REG_R9,
	TCG_REG_R10,
	TCG_REG_R11,
	TCG_REG_R12,
	TCG_REG_R13,
	TCG_REG_R14,
	TCG_REG_R15,

	TCG_REG_XMM0,
	TCG_REG_XMM1,
	TCG_REG_XMM2,
	TCG_REG_XMM3,
	TCG_REG_XMM4,
	TCG_REG_XMM5,
	TCG_REG_XMM6,
	TCG_REG_XMM7,

	/* 64-bit registers; likewise always define. */
	TCG_REG_XMM8,
	TCG_REG_XMM9,
	TCG_REG_XMM10,
	TCG_REG_XMM11,
	TCG_REG_XMM12,
	TCG_REG_XMM13,
	TCG_REG_XMM14,
	TCG_REG_XMM15,

	TCG_REG_RAX = TCG_REG_EAX,
	TCG_REG_RCX = TCG_REG_ECX,
	TCG_REG_RDX = TCG_REG_EDX,
	TCG_REG_RBX = TCG_REG_EBX,
	TCG_REG_RSP = TCG_REG_ESP,
	TCG_REG_RBP = TCG_REG_EBP,
	TCG_REG_RSI = TCG_REG_ESI,
	TCG_REG_RDI = TCG_REG_EDI,

	TCG_AREG0 = TCG_REG_EBP,
	TCG_REG_CALL_STACK = TCG_REG_ESP
	} TCGReg;

	/* used for function call generation */
	#define TCG_TARGET_STACK_ALIGN 16
	#if defined(_WIN64)
	#define TCG_TARGET_CALL_STACK_OFFSET 32
	#else
	#define TCG_TARGET_CALL_STACK_OFFSET 0
	#endif

	extern bool have_bmi1;
	extern bool have_popcnt;
	extern bool have_avx1;
	extern bool have_avx2;
	extern bool have_avx512bw;
	extern bool have_avx512dq;
	extern bool have_avx512vbmi2;
	extern bool have_avx512vl;
	extern bool have_movbe;

	/* optional instructions */
	#define TCG_TARGET_HAS_div2_i32 1
	#define TCG_TARGET_HAS_rot_i32 1
	#define TCG_TARGET_HAS_ext8s_i32 1
	#define TCG_TARGET_HAS_ext16s_i32 1
	#define TCG_TARGET_HAS_ext8u_i32 1
	#define TCG_TARGET_HAS_ext16u_i32 1
	#define TCG_TARGET_HAS_bswap16_i32 1
	#define TCG_TARGET_HAS_bswap32_i32 1
	#define TCG_TARGET_HAS_neg_i32 1
	#define TCG_TARGET_HAS_not_i32 1
	#define TCG_TARGET_HAS_andc_i32 have_bmi1
	#define TCG_TARGET_HAS_orc_i32 0
	#define TCG_TARGET_HAS_eqv_i32 0
	#define TCG_TARGET_HAS_nand_i32 0
	#define TCG_TARGET_HAS_nor_i32 0
	#define TCG_TARGET_HAS_clz_i32 1
	#define TCG_TARGET_HAS_ctz_i32 1
	#define TCG_TARGET_HAS_ctpop_i32 have_popcnt
	#define TCG_TARGET_HAS_deposit_i32 1
	#define TCG_TARGET_HAS_extract_i32 1
	#define TCG_TARGET_HAS_sextract_i32 1
	#define TCG_TARGET_HAS_extract2_i32 1
	#define TCG_TARGET_HAS_movcond_i32 1
	#define TCG_TARGET_HAS_add2_i32 1
	#define TCG_TARGET_HAS_sub2_i32 1
	#define TCG_TARGET_HAS_mulu2_i32 1
	#define TCG_TARGET_HAS_muls2_i32 1
	#define TCG_TARGET_HAS_muluh_i32 0
	#define TCG_TARGET_HAS_mulsh_i32 0
	#define TCG_TARGET_HAS_direct_jump 1

	#if TCG_TARGET_REG_BITS == 64
	/* Keep target addresses zero-extended in a register. */
	#define TCG_TARGET_HAS_extrl_i64_i32 (TARGET_LONG_BITS == 32)
	#define TCG_TARGET_HAS_extrh_i64_i32 (TARGET_LONG_BITS == 32)
	#define TCG_TARGET_HAS_div2_i64 1
	#define TCG_TARGET_HAS_rot_i64 1
	#define TCG_TARGET_HAS_ext8s_i64 1
	#define TCG_TARGET_HAS_ext16s_i64 1
	#define TCG_TARGET_HAS_ext32s_i64 1
	#define TCG_TARGET_HAS_ext8u_i64 1
	#define TCG_TARGET_HAS_ext16u_i64 1
	#define TCG_TARGET_HAS_ext32u_i64 1
	#define TCG_TARGET_HAS_bswap16_i64 1
	#define TCG_TARGET_HAS_bswap32_i64 1
	#define TCG_TARGET_HAS_bswap64_i64 1
	#define TCG_TARGET_HAS_neg_i64 1
	#define TCG_TARGET_HAS_not_i64 1
	#define TCG_TARGET_HAS_andc_i64 have_bmi1
	#define TCG_TARGET_HAS_orc_i64 0
	#define TCG_TARGET_HAS_eqv_i64 0
	#define TCG_TARGET_HAS_nand_i64 0
	#define TCG_TARGET_HAS_nor_i64 0
	#define TCG_TARGET_HAS_clz_i64 1
	#define TCG_TARGET_HAS_ctz_i64 1
	#define TCG_TARGET_HAS_ctpop_i64 have_popcnt
	#define TCG_TARGET_HAS_deposit_i64 1
	#define TCG_TARGET_HAS_extract_i64 1
	#define TCG_TARGET_HAS_sextract_i64 0
	#define TCG_TARGET_HAS_extract2_i64 1
	#define TCG_TARGET_HAS_movcond_i64 1
	#define TCG_TARGET_HAS_add2_i64 1
	#define TCG_TARGET_HAS_sub2_i64 1
	#define TCG_TARGET_HAS_mulu2_i64 1
	#define TCG_TARGET_HAS_muls2_i64 1
	#define TCG_TARGET_HAS_muluh_i64 0
	#define TCG_TARGET_HAS_mulsh_i64 0
	#define TCG_TARGET_HAS_qemu_st8_i32 0
	#else
	#define TCG_TARGET_HAS_qemu_st8_i32 1
	#endif

	/* We do not support older SSE systems, only beginning with AVX1. */
	#define TCG_TARGET_HAS_v64 have_avx1
	#define TCG_TARGET_HAS_v128 have_avx1
	#define TCG_TARGET_HAS_v256 have_avx2

	#define TCG_TARGET_HAS_andc_vec 1
	#define TCG_TARGET_HAS_orc_vec have_avx512vl
	#define TCG_TARGET_HAS_nand_vec have_avx512vl
	#define TCG_TARGET_HAS_nor_vec have_avx512vl
	#define TCG_TARGET_HAS_eqv_vec have_avx512vl
	#define TCG_TARGET_HAS_not_vec have_avx512vl
	#define TCG_TARGET_HAS_neg_vec 0
	#define TCG_TARGET_HAS_abs_vec 1
	#define TCG_TARGET_HAS_roti_vec have_avx512vl
	#define TCG_TARGET_HAS_rots_vec 0
	#define TCG_TARGET_HAS_rotv_vec have_avx512vl
	#define TCG_TARGET_HAS_shi_vec 1
	#define TCG_TARGET_HAS_shs_vec 1
	#define TCG_TARGET_HAS_shv_vec have_avx2
	#define TCG_TARGET_HAS_mul_vec 1
	#define TCG_TARGET_HAS_sat_vec 1
	#define TCG_TARGET_HAS_minmax_vec 1
	#define TCG_TARGET_HAS_bitsel_vec have_avx512vl
	#define TCG_TARGET_HAS_cmpsel_vec -1

	#define TCG_TARGET_deposit_i32_valid(ofs, len) \
	(((ofs) == 0 && (len) == 8) \|\| ((ofs) == 8 && (len) == 8) \|\| \
	((ofs) == 0 && (len) == 16))
	#define TCG_TARGET_deposit_i64_valid TCG_TARGET_deposit_i32_valid

	/* Check for the possibility of high-byte extraction and, for 64-bit,
	zero-extending 32-bit right-shift. */
	#define TCG_TARGET_extract_i32_valid(ofs, len) ((ofs) == 8 && (len) == 8)
	#define TCG_TARGET_extract_i64_valid(ofs, len) \
	(((ofs) == 8 && (len) == 8) \|\| ((ofs) + (len)) == 32)

	static inline void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
	uintptr_t jmp_rw, uintptr_t addr)
	{
	/* patch the branch destination */
	qatomic_set((int32_t *)jmp_rw, addr - (jmp_rx + 4));
	/* no need to flush icache explicitly */
	}

	/* This defines the natural memory order supported by this
	* architecture before guarantees made by various barrier
	* instructions.
	*
	* The x86 has a pretty strong memory ordering which only really
	* allows for some stores to be re-ordered after loads.
	*/
	#include "tcg/tcg-mo.h"

	#define TCG_TARGET_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD)

	#define TCG_TARGET_HAS_MEMORY_BSWAP have_movbe

	#define TCG_TARGET_NEED_LDST_LABELS
	#define TCG_TARGET_NEED_POOL_LABELS

	#endif