[qemu.git] / tcg / tcg.h

/*
 * 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.
 */
#include "tcg-target.h"

#if TCG_TARGET_REG_BITS == 32
typedef int32_t tcg_target_long;
typedef uint32_t tcg_target_ulong;
#define TCG_PRIlx PRIx32
#define TCG_PRIld PRId32
#elif TCG_TARGET_REG_BITS == 64
typedef int64_t tcg_target_long;
typedef uint64_t tcg_target_ulong;
#define TCG_PRIlx PRIx64
#define TCG_PRIld PRId64
#else
#error unsupported
#endif

#if TCG_TARGET_NB_REGS <= 32
typedef uint32_t TCGRegSet;
#elif TCG_TARGET_NB_REGS <= 64
typedef uint64_t TCGRegSet;
#else
#error unsupported
#endif

enum {
#define DEF(s, n, copy_size) INDEX_op_ ## s,
#include "tcg-opc.h"
#undef DEF
    NB_OPS,
};

#define tcg_regset_clear(d) (d) = 0
#define tcg_regset_set(d, s) (d) = (s)
#define tcg_regset_set32(d, reg, val32) (d) |= (val32) << (reg)
#define tcg_regset_set_reg(d, r) (d) |= 1 << (r)
#define tcg_regset_reset_reg(d, r) (d) &= ~(1 << (r))
#define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
#define tcg_regset_or(d, a, b) (d) = (a) | (b)
#define tcg_regset_and(d, a, b) (d) = (a) & (b)
#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
#define tcg_regset_not(d, a) (d) = ~(a)

typedef struct TCGRelocation {
    struct TCGRelocation *next;
    int type;
    uint8_t *ptr;
    tcg_target_long addend;
} TCGRelocation; 

typedef struct TCGLabel {
    int has_value;
    union {
        tcg_target_ulong value;
        TCGRelocation *first_reloc;
    } u;
} TCGLabel;

typedef struct TCGPool {
    struct TCGPool *next;
    int size;
    uint8_t data[0] __attribute__ ((aligned));
} TCGPool;

#define TCG_POOL_CHUNK_SIZE 32768

#define TCG_MAX_LABELS 512

#define TCG_MAX_TEMPS 512

/* when the size of the arguments of a called function is smaller than
   this value, they are statically allocated in the TB stack frame */
#define TCG_STATIC_CALL_ARGS_SIZE 128

typedef int TCGType;

#define TCG_TYPE_I32 0
#define TCG_TYPE_I64 1
#define TCG_TYPE_COUNT 2 /* number of different types */

#if TCG_TARGET_REG_BITS == 32
#define TCG_TYPE_PTR TCG_TYPE_I32
#else
#define TCG_TYPE_PTR TCG_TYPE_I64
#endif

typedef tcg_target_ulong TCGArg;

/* Define a type and accessor macros for varables.  Using a struct is
   nice because it gives some level of type safely.  Ideally the compiler
   be able to see through all this.  However in practice this is not true,
   expecially on targets with braindamaged ABIs (e.g. i386).
   We use plain int by default to avoid this runtime overhead.
   Users of tcg_gen_* don't need to know about any of this, and should
   treat TCGv as an opaque type.
   In additon we do typechecking for different types of variables.  TCGv_i32
   and TCGv_i64 are 32/64-bit variables respectively.  TCGv and TCGv_ptr
   are aliases for target_ulong and host pointer sized values respectively.
 */

//#define DEBUG_TCGV 1

#ifdef DEBUG_TCGV

typedef struct
{
    int n;
} TCGv_i32;

typedef struct
{
    int n;
} TCGv_i64;

#define MAKE_TCGV_I32(i) __extension__                  \
    ({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
#define MAKE_TCGV_I64(i) __extension__                  \
    ({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
#define GET_TCGV_I32(t) ((t).n)
#define GET_TCGV_I64(t) ((t).n)
#if TCG_TARGET_REG_BITS == 32
#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
#endif

#else /* !DEBUG_TCGV */

typedef int TCGv_i32;
typedef int TCGv_i64;
#define MAKE_TCGV_I32(x) (x)
#define MAKE_TCGV_I64(x) (x)
#define GET_TCGV_I32(t) (t)
#define GET_TCGV_I64(t) (t)
#if TCG_TARGET_REG_BITS == 32
#define TCGV_LOW(t) (t)
#define TCGV_HIGH(t) ((t) + 1)
#endif

#endif /* DEBUG_TCGV */

/* Dummy definition to avoid compiler warnings.  */
#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)

/* call flags */
#define TCG_CALL_TYPE_MASK      0x000f
#define TCG_CALL_TYPE_STD       0x0000 /* standard C call */
#define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
#define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
#define TCG_CALL_TYPE_REGPARM   0x0003 /* i386 style regparm call (3 regs) */
/* A pure function only reads its arguments and globals variables and
   cannot raise exceptions. Hence a call to a pure function can be
   safely suppressed if the return value is not used. */
#define TCG_CALL_PURE           0x0010 

/* used to align parameters */
#define TCG_CALL_DUMMY_TCGV     MAKE_TCGV_I32(-1)
#define TCG_CALL_DUMMY_ARG      ((TCGArg)(-1))

typedef enum {
    TCG_COND_EQ,
    TCG_COND_NE,
    TCG_COND_LT,
    TCG_COND_GE,
    TCG_COND_LE,
    TCG_COND_GT,
    /* unsigned */
    TCG_COND_LTU,
    TCG_COND_GEU,
    TCG_COND_LEU,
    TCG_COND_GTU,
} TCGCond;

#define TEMP_VAL_DEAD  0
#define TEMP_VAL_REG   1
#define TEMP_VAL_MEM   2
#define TEMP_VAL_CONST 3

/* XXX: optimize memory layout */
typedef struct TCGTemp {
    TCGType base_type;
    TCGType type;
    int val_type;
    int reg;
    tcg_target_long val;
    int mem_reg;
    tcg_target_long mem_offset;
    unsigned int fixed_reg:1;
    unsigned int mem_coherent:1;
    unsigned int mem_allocated:1;
    unsigned int temp_local:1; /* If true, the temp is saved accross
                                  basic blocks. Otherwise, it is not
                                  preserved accross basic blocks. */
    unsigned int temp_allocated:1; /* never used for code gen */
    /* index of next free temp of same base type, -1 if end */
    int next_free_temp;
    const char *name;
} TCGTemp;

typedef struct TCGHelperInfo {
    tcg_target_ulong func;
    const char *name;
} TCGHelperInfo;

typedef struct TCGContext TCGContext;

struct TCGContext {
    uint8_t *pool_cur, *pool_end;
    TCGPool *pool_first, *pool_current;
    TCGLabel *labels;
    int nb_labels;
    TCGTemp *temps; /* globals first, temps after */
    int nb_globals;
    int nb_temps;
    /* index of free temps, -1 if none */
    int first_free_temp[TCG_TYPE_COUNT * 2]; 

    /* goto_tb support */
    uint8_t *code_buf;
    unsigned long *tb_next;
    uint16_t *tb_next_offset;
    uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */

    /* liveness analysis */
    uint16_t *op_dead_iargs; /* for each operation, each bit tells if the
                                corresponding input argument is dead */
    
    /* tells in which temporary a given register is. It does not take
       into account fixed registers */
    int reg_to_temp[TCG_TARGET_NB_REGS];
    TCGRegSet reserved_regs;
    tcg_target_long current_frame_offset;
    tcg_target_long frame_start;
    tcg_target_long frame_end;
    int frame_reg;

    uint8_t *code_ptr;
    TCGTemp static_temps[TCG_MAX_TEMPS];

    TCGHelperInfo *helpers;
    int nb_helpers;
    int allocated_helpers;
    int helpers_sorted;

#ifdef CONFIG_PROFILER
    /* profiling info */
    int64_t tb_count1;
    int64_t tb_count;
    int64_t op_count; /* total insn count */
    int op_count_max; /* max insn per TB */
    int64_t temp_count;
    int temp_count_max;
    int64_t old_op_count;
    int64_t del_op_count;
    int64_t code_in_len;
    int64_t code_out_len;
    int64_t interm_time;
    int64_t code_time;
    int64_t la_time;
    int64_t restore_count;
    int64_t restore_time;
#endif
};

extern TCGContext tcg_ctx;
extern uint16_t *gen_opc_ptr;
extern TCGArg *gen_opparam_ptr;
extern uint16_t gen_opc_buf[];
extern TCGArg gen_opparam_buf[];

/* pool based memory allocation */

void *tcg_malloc_internal(TCGContext *s, int size);
void tcg_pool_reset(TCGContext *s);
void tcg_pool_delete(TCGContext *s);

static inline void *tcg_malloc(int size)
{
    TCGContext *s = &tcg_ctx;
    uint8_t *ptr, *ptr_end;
    size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
    ptr = s->pool_cur;
    ptr_end = ptr + size;
    if (unlikely(ptr_end > s->pool_end)) {
        return tcg_malloc_internal(&tcg_ctx, size);
    } else {
        s->pool_cur = ptr_end;
        return ptr;
    }
}

void tcg_context_init(TCGContext *s);
void tcg_func_start(TCGContext *s);

int dyngen_code(TCGContext *s, uint8_t *gen_code_buf);
int dyngen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);

void tcg_set_frame(TCGContext *s, int reg,
                   tcg_target_long start, tcg_target_long size);
TCGv_i64 tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2,
                                  const char *name);

TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
                                const char *name);
TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
static inline TCGv_i32 tcg_temp_new_i32(void)
{
    return tcg_temp_new_internal_i32(0);
}
static inline TCGv_i32 tcg_temp_local_new_i32(void)
{
    return tcg_temp_new_internal_i32(1);
}
void tcg_temp_free_i32(TCGv_i32 arg);
char *tcg_get_arg_str_i32(TCGContext *s, char *buf, int buf_size, TCGv_i32 arg);

TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
                                const char *name);
TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
static inline TCGv_i64 tcg_temp_new_i64(void)
{
    return tcg_temp_new_internal_i64(0);
}
static inline TCGv_i64 tcg_temp_local_new_i64(void)
{
    return tcg_temp_new_internal_i64(1);
}
void tcg_temp_free_i64(TCGv_i64 arg);
char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg);

void tcg_dump_info(FILE *f,
                   int (*cpu_fprintf)(FILE *f, const char *fmt, ...));

#define TCG_CT_ALIAS  0x80
#define TCG_CT_IALIAS 0x40
#define TCG_CT_REG    0x01
#define TCG_CT_CONST  0x02 /* any constant of register size */

typedef struct TCGArgConstraint {
    uint16_t ct;
    uint8_t alias_index;
    union {
        TCGRegSet regs;
    } u;
} TCGArgConstraint;

#define TCG_MAX_OP_ARGS 16

#define TCG_OPF_BB_END     0x01 /* instruction defines the end of a basic
                                   block */
#define TCG_OPF_CALL_CLOBBER 0x02 /* instruction clobbers call registers 
                                   and potentially update globals. */
#define TCG_OPF_SIDE_EFFECTS 0x04 /* instruction has side effects : it
                                     cannot be removed if its output
                                     are not used */

typedef struct TCGOpDef {
    const char *name;
    uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
    uint8_t flags;
    uint16_t copy_size;
    TCGArgConstraint *args_ct;
    int *sorted_args;
} TCGOpDef;
        
typedef struct TCGTargetOpDef {
    int op;
    const char *args_ct_str[TCG_MAX_OP_ARGS];
} TCGTargetOpDef;

extern TCGOpDef tcg_op_defs[];

void tcg_target_init(TCGContext *s);
void tcg_target_qemu_prologue(TCGContext *s);

#define tcg_abort() \
do {\
    fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
    abort();\
} while (0)

void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);

#if TCG_TARGET_REG_BITS == 32
#define tcg_const_ptr tcg_const_i32
#define tcg_add_ptr tcg_add_i32
#define tcg_sub_ptr tcg_sub_i32
#define TCGv_ptr TCGv_i32
#define GET_TCGV_PTR GET_TCGV_I32
#define tcg_global_reg_new_ptr tcg_global_reg_new_i32
#define tcg_global_mem_new_ptr tcg_global_mem_new_i32
#define tcg_temp_new_ptr tcg_temp_new_i32
#define tcg_temp_free_ptr tcg_temp_free_i32
#else
#define tcg_const_ptr tcg_const_i64
#define tcg_add_ptr tcg_add_i64
#define tcg_sub_ptr tcg_sub_i64
#define TCGv_ptr TCGv_i64
#define GET_TCGV_PTR GET_TCGV_I64
#define tcg_global_reg_new_ptr tcg_global_reg_new_i64
#define tcg_global_mem_new_ptr tcg_global_mem_new_i64
#define tcg_temp_new_ptr tcg_temp_new_i64
#define tcg_temp_free_ptr tcg_temp_free_i64
#endif

void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
                   int sizemask, TCGArg ret, int nargs, TCGArg *args);

void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
                        int c, int right, int arith);

/* only used for debugging purposes */
void tcg_register_helper(void *func, const char *name);
const char *tcg_helper_get_name(TCGContext *s, void *func);
void tcg_dump_ops(TCGContext *s, FILE *outfile);

void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf);
TCGv_i32 tcg_const_i32(int32_t val);
TCGv_i64 tcg_const_i64(int64_t val);
TCGv_i32 tcg_const_local_i32(int32_t val);
TCGv_i64 tcg_const_local_i64(int64_t val);

void tcg_out_reloc(TCGContext *s, uint8_t *code_ptr, int type, 
                   int label_index, long addend);
const TCGArg *tcg_gen_code_op(TCGContext *s, int opc, const TCGArg *args1,
                              unsigned int dead_iargs);

const TCGArg *dyngen_op(TCGContext *s, int opc, const TCGArg *opparam_ptr);

/* tcg-runtime.c */
int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2);
int64_t tcg_helper_shr_i64(int64_t arg1, int64_t arg2);
int64_t tcg_helper_sar_i64(int64_t arg1, int64_t arg2);
int64_t tcg_helper_div_i64(int64_t arg1, int64_t arg2);
int64_t tcg_helper_rem_i64(int64_t arg1, int64_t arg2);
uint64_t tcg_helper_divu_i64(uint64_t arg1, uint64_t arg2);
uint64_t tcg_helper_remu_i64(uint64_t arg1, uint64_t arg2);

extern uint8_t code_gen_prologue[];
#if defined(__powerpc__) && !defined(__powerpc64__)
#define tcg_qemu_tb_exec(tb_ptr) \
    ((long REGPARM __attribute__ ((longcall)) (*)(void *))code_gen_prologue)(tb_ptr)
#else
#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM (*)(void *))code_gen_prologue)(tb_ptr)
#endif
Commit	Line	Data
c896fe29 FB	1	/*
	2	* Tiny Code Generator for QEMU
	3	*
	4	* Copyright (c) 2008 Fabrice Bellard
	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	#include "tcg-target.h"
	25
	26	#if TCG_TARGET_REG_BITS == 32
	27	typedef int32_t tcg_target_long;
	28	typedef uint32_t tcg_target_ulong;
	29	#define TCG_PRIlx PRIx32
	30	#define TCG_PRIld PRId32
	31	#elif TCG_TARGET_REG_BITS == 64
	32	typedef int64_t tcg_target_long;
	33	typedef uint64_t tcg_target_ulong;
	34	#define TCG_PRIlx PRIx64
	35	#define TCG_PRIld PRId64
	36	#else
	37	#error unsupported
	38	#endif
	39
	40	#if TCG_TARGET_NB_REGS <= 32
	41	typedef uint32_t TCGRegSet;
	42	#elif TCG_TARGET_NB_REGS <= 64
	43	typedef uint64_t TCGRegSet;
	44	#else
	45	#error unsupported
	46	#endif
	47
	48	enum {
	49	#define DEF(s, n, copy_size) INDEX_op_ ## s,
	50	#include "tcg-opc.h"
	51	#undef DEF
	52	NB_OPS,
	53	};
	54
	55	#define tcg_regset_clear(d) (d) = 0
	56	#define tcg_regset_set(d, s) (d) = (s)
	57	#define tcg_regset_set32(d, reg, val32) (d) \|= (val32) << (reg)
	58	#define tcg_regset_set_reg(d, r) (d) \|= 1 << (r)
	59	#define tcg_regset_reset_reg(d, r) (d) &= ~(1 << (r))
	60	#define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
	61	#define tcg_regset_or(d, a, b) (d) = (a) \| (b)
	62	#define tcg_regset_and(d, a, b) (d) = (a) & (b)
	63	#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
	64	#define tcg_regset_not(d, a) (d) = ~(a)
65
66	typedef struct TCGRelocation {
67	struct TCGRelocation *next;
68	int type;
69	uint8_t *ptr;
70	tcg_target_long addend;
71	} TCGRelocation;
72
73	typedef struct TCGLabel {
c44f945a	74	int has_value;
c896fe29 FB	75	union {
	76	tcg_target_ulong value;
	77	TCGRelocation *first_reloc;
	78	} u;
	79	} TCGLabel;
	80
	81	typedef struct TCGPool {
	82	struct TCGPool *next;
c44f945a BS	83	int size;
c44f945a BS	84	uint8_t data[0] __attribute__ ((aligned));
c896fe29 FB	85	} TCGPool;
	86
	87	#define TCG_POOL_CHUNK_SIZE 32768
	88
	89	#define TCG_MAX_LABELS 512
	90
c4071c90	91	#define TCG_MAX_TEMPS 512
c896fe29	92
b03cce8e FB	93	/* when the size of the arguments of a called function is smaller than
	94	this value, they are statically allocated in the TB stack frame */
	95	#define TCG_STATIC_CALL_ARGS_SIZE 128
	96
c896fe29 FB	97	typedef int TCGType;
	98
	99	#define TCG_TYPE_I32 0
	100	#define TCG_TYPE_I64 1
e8996ee0	101	#define TCG_TYPE_COUNT 2 /* number of different types */
c896fe29 FB	102
	103	#if TCG_TARGET_REG_BITS == 32
	104	#define TCG_TYPE_PTR TCG_TYPE_I32
	105	#else
	106	#define TCG_TYPE_PTR TCG_TYPE_I64
	107	#endif
	108
	109	typedef tcg_target_ulong TCGArg;
	110
ac56dd48 PB	111	/* Define a type and accessor macros for varables. Using a struct is
	112	nice because it gives some level of type safely. Ideally the compiler
	113	be able to see through all this. However in practice this is not true,
	114	expecially on targets with braindamaged ABIs (e.g. i386).
	115	We use plain int by default to avoid this runtime overhead.
	116	Users of tcg_gen_* don't need to know about any of this, and should
a7812ae4 PB	117	treat TCGv as an opaque type.
	118	In additon we do typechecking for different types of variables. TCGv_i32
	119	and TCGv_i64 are 32/64-bit variables respectively. TCGv and TCGv_ptr
	120	are aliases for target_ulong and host pointer sized values respectively.
	121	*/
ac56dd48	122
00dbbb03	123	//#define DEBUG_TCGV 1
ac56dd48 PB	124
	125	#ifdef DEBUG_TCGV
	126
	127	typedef struct
	128	{
	129	int n;
a7812ae4	130	} TCGv_i32;
ac56dd48	131
a7812ae4 PB	132	typedef struct
	133	{
	134	int n;
	135	} TCGv_i64;
	136
	137	#define MAKE_TCGV_I32(i) __extension__ \
	138	({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
	139	#define MAKE_TCGV_I64(i) __extension__ \
	140	({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
	141	#define GET_TCGV_I32(t) ((t).n)
	142	#define GET_TCGV_I64(t) ((t).n)
ac56dd48	143	#if TCG_TARGET_REG_BITS == 32
a7812ae4 PB	144	#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
a7812ae4 PB	145	#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
ac56dd48 PB	146	#endif
	147
	148	#else /* !DEBUG_TCGV */
	149
a7812ae4 PB	150	typedef int TCGv_i32;
	151	typedef int TCGv_i64;
	152	#define MAKE_TCGV_I32(x) (x)
	153	#define MAKE_TCGV_I64(x) (x)
	154	#define GET_TCGV_I32(t) (t)
	155	#define GET_TCGV_I64(t) (t)
ac56dd48	156	#if TCG_TARGET_REG_BITS == 32
a7812ae4	157	#define TCGV_LOW(t) (t)
ac56dd48 PB	158	#define TCGV_HIGH(t) ((t) + 1)
	159	#endif
	160
	161	#endif /* DEBUG_TCGV */
	162
a50f5b91	163	/* Dummy definition to avoid compiler warnings. */
a7812ae4 PB	164	#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
a7812ae4 PB	165	#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
a50f5b91	166
c896fe29 FB	167	/* call flags */
	168	#define TCG_CALL_TYPE_MASK 0x000f
	169	#define TCG_CALL_TYPE_STD 0x0000 /* standard C call */
	170	#define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
	171	#define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
	172	#define TCG_CALL_TYPE_REGPARM 0x0003 /* i386 style regparm call (3 regs) */
c6e113f5 FB	173	/* A pure function only reads its arguments and globals variables and
	174	cannot raise exceptions. Hence a call to a pure function can be
	175	safely suppressed if the return value is not used. */
	176	#define TCG_CALL_PURE 0x0010
c896fe29	177
39cf05d3	178	/* used to align parameters */
a7812ae4	179	#define TCG_CALL_DUMMY_TCGV MAKE_TCGV_I32(-1)
39cf05d3 FB	180	#define TCG_CALL_DUMMY_ARG ((TCGArg)(-1))
39cf05d3 FB	181
c896fe29 FB	182	typedef enum {
	183	TCG_COND_EQ,
	184	TCG_COND_NE,
	185	TCG_COND_LT,
	186	TCG_COND_GE,
	187	TCG_COND_LE,
	188	TCG_COND_GT,
	189	/* unsigned */
	190	TCG_COND_LTU,
	191	TCG_COND_GEU,
	192	TCG_COND_LEU,
	193	TCG_COND_GTU,
	194	} TCGCond;
	195
	196	#define TEMP_VAL_DEAD 0
	197	#define TEMP_VAL_REG 1
	198	#define TEMP_VAL_MEM 2
	199	#define TEMP_VAL_CONST 3
	200
	201	/* XXX: optimize memory layout */
	202	typedef struct TCGTemp {
	203	TCGType base_type;
	204	TCGType type;
	205	int val_type;
	206	int reg;
	207	tcg_target_long val;
	208	int mem_reg;
	209	tcg_target_long mem_offset;
	210	unsigned int fixed_reg:1;
	211	unsigned int mem_coherent:1;
	212	unsigned int mem_allocated:1;
641d5fbe FB	213	unsigned int temp_local:1; /* If true, the temp is saved accross
	214	basic blocks. Otherwise, it is not
	215	preserved accross basic blocks. */
e8996ee0 FB	216	unsigned int temp_allocated:1; /* never used for code gen */
	217	/* index of next free temp of same base type, -1 if end */
	218	int next_free_temp;
c896fe29 FB	219	const char *name;
	220	} TCGTemp;
	221
	222	typedef struct TCGHelperInfo {
4dc81f28	223	tcg_target_ulong func;
c896fe29 FB	224	const char *name;
	225	} TCGHelperInfo;
	226
	227	typedef struct TCGContext TCGContext;
	228
c896fe29 FB	229	struct TCGContext {
	230	uint8_t pool_cur, pool_end;
	231	TCGPool pool_first, pool_current;
	232	TCGLabel *labels;
	233	int nb_labels;
	234	TCGTemp temps; / globals first, temps after */
	235	int nb_globals;
	236	int nb_temps;
641d5fbe FB	237	/* index of free temps, -1 if none */
641d5fbe FB	238	int first_free_temp[TCG_TYPE_COUNT * 2];
c896fe29 FB	239
	240	/* goto_tb support */
	241	uint8_t *code_buf;
	242	unsigned long *tb_next;
	243	uint16_t *tb_next_offset;
	244	uint16_t tb_jmp_offset; / != NULL if USE_DIRECT_JUMP */
	245
641d5fbe	246	/* liveness analysis */
c896fe29 FB	247	uint16_t op_dead_iargs; / for each operation, each bit tells if the
c896fe29 FB	248	corresponding input argument is dead */
641d5fbe	249
c896fe29 FB	250	/* tells in which temporary a given register is. It does not take
	251	into account fixed registers */
	252	int reg_to_temp[TCG_TARGET_NB_REGS];
	253	TCGRegSet reserved_regs;
	254	tcg_target_long current_frame_offset;
	255	tcg_target_long frame_start;
	256	tcg_target_long frame_end;
	257	int frame_reg;
	258
	259	uint8_t *code_ptr;
	260	TCGTemp static_temps[TCG_MAX_TEMPS];
	261
c896fe29 FB	262	TCGHelperInfo *helpers;
	263	int nb_helpers;
	264	int allocated_helpers;
e8996ee0	265	int helpers_sorted;
a23a9ec6 FB	266
	267	#ifdef CONFIG_PROFILER
	268	/* profiling info */
	269	int64_t tb_count1;
	270	int64_t tb_count;
	271	int64_t op_count; /* total insn count */
	272	int op_count_max; /* max insn per TB */
	273	int64_t temp_count;
	274	int temp_count_max;
	275	int64_t old_op_count;
	276	int64_t del_op_count;
	277	int64_t code_in_len;
	278	int64_t code_out_len;
	279	int64_t interm_time;
	280	int64_t code_time;
	281	int64_t la_time;
	282	int64_t restore_count;
	283	int64_t restore_time;
	284	#endif
c896fe29 FB	285	};
	286
	287	extern TCGContext tcg_ctx;
	288	extern uint16_t *gen_opc_ptr;
	289	extern TCGArg *gen_opparam_ptr;
	290	extern uint16_t gen_opc_buf[];
	291	extern TCGArg gen_opparam_buf[];
	292
	293	/* pool based memory allocation */
	294
	295	void tcg_malloc_internal(TCGContext s, int size);
	296	void tcg_pool_reset(TCGContext *s);
	297	void tcg_pool_delete(TCGContext *s);
	298
	299	static inline void *tcg_malloc(int size)
	300	{
	301	TCGContext *s = &tcg_ctx;
	302	uint8_t ptr, ptr_end;
	303	size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
	304	ptr = s->pool_cur;
	305	ptr_end = ptr + size;
	306	if (unlikely(ptr_end > s->pool_end)) {
	307	return tcg_malloc_internal(&tcg_ctx, size);
	308	} else {
	309	s->pool_cur = ptr_end;
	310	return ptr;
	311	}
	312	}
	313
	314	void tcg_context_init(TCGContext *s);
	315	void tcg_func_start(TCGContext *s);
	316
	317	int dyngen_code(TCGContext s, uint8_t gen_code_buf);
623e265c	318	int dyngen_code_search_pc(TCGContext s, uint8_t gen_code_buf, long offset);
c896fe29 FB	319
	320	void tcg_set_frame(TCGContext *s, int reg,
	321	tcg_target_long start, tcg_target_long size);
a7812ae4 PB	322	TCGv_i64 tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2,
	323	const char *name);
	324
	325	TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
	326	TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
	327	const char *name);
	328	TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
	329	static inline TCGv_i32 tcg_temp_new_i32(void)
	330	{
	331	return tcg_temp_new_internal_i32(0);
	332	}
	333	static inline TCGv_i32 tcg_temp_local_new_i32(void)
	334	{
	335	return tcg_temp_new_internal_i32(1);
	336	}
	337	void tcg_temp_free_i32(TCGv_i32 arg);
	338	char tcg_get_arg_str_i32(TCGContext s, char *buf, int buf_size, TCGv_i32 arg);
	339
	340	TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
	341	TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
	342	const char *name);
	343	TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
	344	static inline TCGv_i64 tcg_temp_new_i64(void)
641d5fbe	345	{
a7812ae4	346	return tcg_temp_new_internal_i64(0);
641d5fbe	347	}
a7812ae4	348	static inline TCGv_i64 tcg_temp_local_new_i64(void)
641d5fbe	349	{
a7812ae4	350	return tcg_temp_new_internal_i64(1);
641d5fbe	351	}
a7812ae4 PB	352	void tcg_temp_free_i64(TCGv_i64 arg);
	353	char tcg_get_arg_str_i64(TCGContext s, char *buf, int buf_size, TCGv_i64 arg);
	354
a23a9ec6 FB	355	void tcg_dump_info(FILE *f,
a23a9ec6 FB	356	int (cpu_fprintf)(FILE f, const char *fmt, ...));
c896fe29 FB	357
	358	#define TCG_CT_ALIAS 0x80
	359	#define TCG_CT_IALIAS 0x40
	360	#define TCG_CT_REG 0x01
	361	#define TCG_CT_CONST 0x02 /* any constant of register size */
	362
	363	typedef struct TCGArgConstraint {
5ff9d6a4 FB	364	uint16_t ct;
5ff9d6a4 FB	365	uint8_t alias_index;
c896fe29 FB	366	union {
	367	TCGRegSet regs;
	368	} u;
	369	} TCGArgConstraint;
	370
	371	#define TCG_MAX_OP_ARGS 16
	372
	373	#define TCG_OPF_BB_END 0x01 /* instruction defines the end of a basic
	374	block */
b03cce8e FB	375	#define TCG_OPF_CALL_CLOBBER 0x02 /* instruction clobbers call registers
	376	and potentially update globals. */
	377	#define TCG_OPF_SIDE_EFFECTS 0x04 /* instruction has side effects : it
	378	cannot be removed if its output
	379	are not used */
c896fe29 FB	380
	381	typedef struct TCGOpDef {
	382	const char *name;
	383	uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
	384	uint8_t flags;
	385	uint16_t copy_size;
	386	TCGArgConstraint *args_ct;
	387	int *sorted_args;
	388	} TCGOpDef;
	389
	390	typedef struct TCGTargetOpDef {
	391	int op;
	392	const char *args_ct_str[TCG_MAX_OP_ARGS];
	393	} TCGTargetOpDef;
	394
	395	extern TCGOpDef tcg_op_defs[];
	396
	397	void tcg_target_init(TCGContext *s);
b03cce8e	398	void tcg_target_qemu_prologue(TCGContext *s);
c896fe29 FB	399
	400	#define tcg_abort() \
	401	do {\
	402	fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
	403	abort();\
	404	} while (0)
	405
	406	void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
	407
c896fe29 FB	408	#if TCG_TARGET_REG_BITS == 32
	409	#define tcg_const_ptr tcg_const_i32
	410	#define tcg_add_ptr tcg_add_i32
	411	#define tcg_sub_ptr tcg_sub_i32
a7812ae4 PB	412	#define TCGv_ptr TCGv_i32
	413	#define GET_TCGV_PTR GET_TCGV_I32
	414	#define tcg_global_reg_new_ptr tcg_global_reg_new_i32
	415	#define tcg_global_mem_new_ptr tcg_global_mem_new_i32
	416	#define tcg_temp_new_ptr tcg_temp_new_i32
	417	#define tcg_temp_free_ptr tcg_temp_free_i32
c896fe29 FB	418	#else
	419	#define tcg_const_ptr tcg_const_i64
	420	#define tcg_add_ptr tcg_add_i64
	421	#define tcg_sub_ptr tcg_sub_i64
a7812ae4 PB	422	#define TCGv_ptr TCGv_i64
	423	#define GET_TCGV_PTR GET_TCGV_I64
	424	#define tcg_global_reg_new_ptr tcg_global_reg_new_i64
	425	#define tcg_global_mem_new_ptr tcg_global_mem_new_i64
	426	#define tcg_temp_new_ptr tcg_temp_new_i64
	427	#define tcg_temp_free_ptr tcg_temp_free_i64
c896fe29 FB	428	#endif
c896fe29 FB	429
a7812ae4 PB	430	void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
	431	int sizemask, TCGArg ret, int nargs, TCGArg *args);
	432
	433	void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
	434	int c, int right, int arith);
	435
	436	/* only used for debugging purposes */
	437	void tcg_register_helper(void func, const char name);
	438	const char tcg_helper_get_name(TCGContext s, void *func);
	439	void tcg_dump_ops(TCGContext s, FILE outfile);
	440
	441	void dump_ops(const uint16_t opc_buf, const TCGArg opparam_buf);
	442	TCGv_i32 tcg_const_i32(int32_t val);
	443	TCGv_i64 tcg_const_i64(int64_t val);
	444	TCGv_i32 tcg_const_local_i32(int32_t val);
	445	TCGv_i64 tcg_const_local_i64(int64_t val);
	446
c896fe29 FB	447	void tcg_out_reloc(TCGContext s, uint8_t code_ptr, int type,
c896fe29 FB	448	int label_index, long addend);
c896fe29 FB	449	const TCGArg tcg_gen_code_op(TCGContext s, int opc, const TCGArg *args1,
	450	unsigned int dead_iargs);
	451
	452	const TCGArg dyngen_op(TCGContext s, int opc, const TCGArg *opparam_ptr);
	453
	454	/* tcg-runtime.c */
	455	int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2);
	456	int64_t tcg_helper_shr_i64(int64_t arg1, int64_t arg2);
	457	int64_t tcg_helper_sar_i64(int64_t arg1, int64_t arg2);
	458	int64_t tcg_helper_div_i64(int64_t arg1, int64_t arg2);
	459	int64_t tcg_helper_rem_i64(int64_t arg1, int64_t arg2);
	460	uint64_t tcg_helper_divu_i64(uint64_t arg1, uint64_t arg2);
	461	uint64_t tcg_helper_remu_i64(uint64_t arg1, uint64_t arg2);
b03cce8e FB	462
b03cce8e FB	463	extern uint8_t code_gen_prologue[];
a69abbe0	464	#if defined(__powerpc__) && !defined(__powerpc64__)
932a6909 FB	465	#define tcg_qemu_tb_exec(tb_ptr) \
	466	((long REGPARM __attribute__ ((longcall)) ()(void ))code_gen_prologue)(tb_ptr)
	467	#else
b03cce8e	468	#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM ()(void ))code_gen_prologue)(tb_ptr)
932a6909	469	#endif