[mirror_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 "qemu-common.h"
#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.
 */

#ifdef CONFIG_DEBUG_TCG
#define DEBUG_TCGV 1
#endif

#ifdef DEBUG_TCGV

typedef struct
{
    int i32;
} TCGv_i32;

typedef struct
{
    int i64;
} 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).i32)
#define GET_TCGV_I64(t) ((t).i64)
#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 */

#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))

/* 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 TCG global 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 
/* A const function only reads its arguments and does not use TCG
   global variables. Hence a call to such a function does not
   save TCG global variables back to their canonical location. */
#define TCG_CALL_CONST          0x0020

/* 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 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 tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
int tcg_gen_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_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;

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);

/* 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(_ARCH_PPC) && !defined(_ARCH_PPC64)
#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	*/
f8393946	24	#include "qemu-common.h"
c896fe29 FB	25	#include "tcg-target.h"
	26
	27	#if TCG_TARGET_REG_BITS == 32
	28	typedef int32_t tcg_target_long;
	29	typedef uint32_t tcg_target_ulong;
	30	#define TCG_PRIlx PRIx32
	31	#define TCG_PRIld PRId32
	32	#elif TCG_TARGET_REG_BITS == 64
	33	typedef int64_t tcg_target_long;
	34	typedef uint64_t tcg_target_ulong;
	35	#define TCG_PRIlx PRIx64
	36	#define TCG_PRIld PRId64
	37	#else
	38	#error unsupported
	39	#endif
	40
	41	#if TCG_TARGET_NB_REGS <= 32
	42	typedef uint32_t TCGRegSet;
	43	#elif TCG_TARGET_NB_REGS <= 64
	44	typedef uint64_t TCGRegSet;
	45	#else
	46	#error unsupported
	47	#endif
	48
	49	enum {
	50	#define DEF(s, n, copy_size) INDEX_op_ ## s,
	51	#include "tcg-opc.h"
	52	#undef DEF
	53	NB_OPS,
	54	};
	55
	56	#define tcg_regset_clear(d) (d) = 0
	57	#define tcg_regset_set(d, s) (d) = (s)
	58	#define tcg_regset_set32(d, reg, val32) (d) \|= (val32) << (reg)
	59	#define tcg_regset_set_reg(d, r) (d) \|= 1 << (r)
	60	#define tcg_regset_reset_reg(d, r) (d) &= ~(1 << (r))
	61	#define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
	62	#define tcg_regset_or(d, a, b) (d) = (a) \| (b)
	63	#define tcg_regset_and(d, a, b) (d) = (a) & (b)
	64	#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
	65	#define tcg_regset_not(d, a) (d) = ~(a)
	66
	67	typedef struct TCGRelocation {
	68	struct TCGRelocation *next;
	69	int type;
	70	uint8_t *ptr;
	71	tcg_target_long addend;
	72	} TCGRelocation;
	73
	74	typedef struct TCGLabel {
c44f945a	75	int has_value;
c896fe29 FB	76	union {
	77	tcg_target_ulong value;
	78	TCGRelocation *first_reloc;
	79	} u;
	80	} TCGLabel;
	81
	82	typedef struct TCGPool {
	83	struct TCGPool *next;
c44f945a BS	84	int size;
c44f945a BS	85	uint8_t data[0] __attribute__ ((aligned));
c896fe29 FB	86	} TCGPool;
	87
	88	#define TCG_POOL_CHUNK_SIZE 32768
	89
	90	#define TCG_MAX_LABELS 512
	91
c4071c90	92	#define TCG_MAX_TEMPS 512
c896fe29	93
b03cce8e FB	94	/* when the size of the arguments of a called function is smaller than
	95	this value, they are statically allocated in the TB stack frame */
	96	#define TCG_STATIC_CALL_ARGS_SIZE 128
	97
c896fe29 FB	98	typedef int TCGType;
	99
	100	#define TCG_TYPE_I32 0
	101	#define TCG_TYPE_I64 1
e8996ee0	102	#define TCG_TYPE_COUNT 2 /* number of different types */
c896fe29 FB	103
	104	#if TCG_TARGET_REG_BITS == 32
	105	#define TCG_TYPE_PTR TCG_TYPE_I32
	106	#else
	107	#define TCG_TYPE_PTR TCG_TYPE_I64
	108	#endif
	109
	110	typedef tcg_target_ulong TCGArg;
	111
ac56dd48 PB	112	/* Define a type and accessor macros for varables. Using a struct is
	113	nice because it gives some level of type safely. Ideally the compiler
	114	be able to see through all this. However in practice this is not true,
	115	expecially on targets with braindamaged ABIs (e.g. i386).
	116	We use plain int by default to avoid this runtime overhead.
	117	Users of tcg_gen_* don't need to know about any of this, and should
a7812ae4 PB	118	treat TCGv as an opaque type.
	119	In additon we do typechecking for different types of variables. TCGv_i32
	120	and TCGv_i64 are 32/64-bit variables respectively. TCGv and TCGv_ptr
	121	are aliases for target_ulong and host pointer sized values respectively.
	122	*/
ac56dd48	123
092c73ee	124	#ifdef CONFIG_DEBUG_TCG
f8393946 AJ	125	#define DEBUG_TCGV 1
f8393946 AJ	126	#endif
ac56dd48 PB	127
	128	#ifdef DEBUG_TCGV
	129
	130	typedef struct
	131	{
a810a2de	132	int i32;
a7812ae4	133	} TCGv_i32;
ac56dd48	134
a7812ae4 PB	135	typedef struct
a7812ae4 PB	136	{
a810a2de	137	int i64;
a7812ae4 PB	138	} TCGv_i64;
	139
	140	#define MAKE_TCGV_I32(i) __extension__ \
	141	({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
	142	#define MAKE_TCGV_I64(i) __extension__ \
	143	({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
a810a2de BS	144	#define GET_TCGV_I32(t) ((t).i32)
a810a2de BS	145	#define GET_TCGV_I64(t) ((t).i64)
ac56dd48	146	#if TCG_TARGET_REG_BITS == 32
a7812ae4 PB	147	#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
a7812ae4 PB	148	#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
ac56dd48 PB	149	#endif
	150
	151	#else /* !DEBUG_TCGV */
	152
a7812ae4 PB	153	typedef int TCGv_i32;
	154	typedef int TCGv_i64;
	155	#define MAKE_TCGV_I32(x) (x)
	156	#define MAKE_TCGV_I64(x) (x)
	157	#define GET_TCGV_I32(t) (t)
	158	#define GET_TCGV_I64(t) (t)
44e6acb0	159
ac56dd48	160	#if TCG_TARGET_REG_BITS == 32
a7812ae4	161	#define TCGV_LOW(t) (t)
ac56dd48 PB	162	#define TCGV_HIGH(t) ((t) + 1)
	163	#endif
	164
	165	#endif /* DEBUG_TCGV */
	166
43e860ef AJ	167	#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
	168	#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
	169
a50f5b91	170	/* Dummy definition to avoid compiler warnings. */
a7812ae4 PB	171	#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
a7812ae4 PB	172	#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
a50f5b91	173
c896fe29 FB	174	/* call flags */
	175	#define TCG_CALL_TYPE_MASK 0x000f
	176	#define TCG_CALL_TYPE_STD 0x0000 /* standard C call */
	177	#define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
	178	#define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
	179	#define TCG_CALL_TYPE_REGPARM 0x0003 /* i386 style regparm call (3 regs) */
3e00b3f5	180	/* A pure function only reads its arguments and TCG global variables
34d5a9ff	181	and cannot raise exceptions. Hence a call to a pure function can be
c6e113f5 FB	182	safely suppressed if the return value is not used. */
c6e113f5 FB	183	#define TCG_CALL_PURE 0x0010
b9c18f56	184	/* A const function only reads its arguments and does not use TCG
3e00b3f5 AJ	185	global variables. Hence a call to such a function does not
3e00b3f5 AJ	186	save TCG global variables back to their canonical location. */
b9c18f56	187	#define TCG_CALL_CONST 0x0020
c896fe29	188
39cf05d3	189	/* used to align parameters */
a7812ae4	190	#define TCG_CALL_DUMMY_TCGV MAKE_TCGV_I32(-1)
39cf05d3 FB	191	#define TCG_CALL_DUMMY_ARG ((TCGArg)(-1))
39cf05d3 FB	192
c896fe29 FB	193	typedef enum {
	194	TCG_COND_EQ,
	195	TCG_COND_NE,
	196	TCG_COND_LT,
	197	TCG_COND_GE,
	198	TCG_COND_LE,
	199	TCG_COND_GT,
	200	/* unsigned */
	201	TCG_COND_LTU,
	202	TCG_COND_GEU,
	203	TCG_COND_LEU,
	204	TCG_COND_GTU,
	205	} TCGCond;
	206
	207	#define TEMP_VAL_DEAD 0
	208	#define TEMP_VAL_REG 1
	209	#define TEMP_VAL_MEM 2
	210	#define TEMP_VAL_CONST 3
	211
	212	/* XXX: optimize memory layout */
	213	typedef struct TCGTemp {
	214	TCGType base_type;
	215	TCGType type;
	216	int val_type;
	217	int reg;
	218	tcg_target_long val;
	219	int mem_reg;
	220	tcg_target_long mem_offset;
	221	unsigned int fixed_reg:1;
	222	unsigned int mem_coherent:1;
	223	unsigned int mem_allocated:1;
641d5fbe FB	224	unsigned int temp_local:1; /* If true, the temp is saved accross
	225	basic blocks. Otherwise, it is not
	226	preserved accross basic blocks. */
e8996ee0 FB	227	unsigned int temp_allocated:1; /* never used for code gen */
	228	/* index of next free temp of same base type, -1 if end */
	229	int next_free_temp;
c896fe29 FB	230	const char *name;
	231	} TCGTemp;
	232
	233	typedef struct TCGHelperInfo {
4dc81f28	234	tcg_target_ulong func;
c896fe29 FB	235	const char *name;
	236	} TCGHelperInfo;
	237
	238	typedef struct TCGContext TCGContext;
	239
c896fe29 FB	240	struct TCGContext {
	241	uint8_t pool_cur, pool_end;
	242	TCGPool pool_first, pool_current;
	243	TCGLabel *labels;
	244	int nb_labels;
	245	TCGTemp temps; / globals first, temps after */
	246	int nb_globals;
	247	int nb_temps;
641d5fbe FB	248	/* index of free temps, -1 if none */
641d5fbe FB	249	int first_free_temp[TCG_TYPE_COUNT * 2];
c896fe29 FB	250
	251	/* goto_tb support */
	252	uint8_t *code_buf;
	253	unsigned long *tb_next;
	254	uint16_t *tb_next_offset;
	255	uint16_t tb_jmp_offset; / != NULL if USE_DIRECT_JUMP */
	256
641d5fbe	257	/* liveness analysis */
c896fe29 FB	258	uint16_t op_dead_iargs; / for each operation, each bit tells if the
c896fe29 FB	259	corresponding input argument is dead */
641d5fbe	260
c896fe29 FB	261	/* tells in which temporary a given register is. It does not take
	262	into account fixed registers */
	263	int reg_to_temp[TCG_TARGET_NB_REGS];
	264	TCGRegSet reserved_regs;
	265	tcg_target_long current_frame_offset;
	266	tcg_target_long frame_start;
	267	tcg_target_long frame_end;
	268	int frame_reg;
	269
	270	uint8_t *code_ptr;
	271	TCGTemp static_temps[TCG_MAX_TEMPS];
	272
c896fe29 FB	273	TCGHelperInfo *helpers;
	274	int nb_helpers;
	275	int allocated_helpers;
e8996ee0	276	int helpers_sorted;
a23a9ec6 FB	277
	278	#ifdef CONFIG_PROFILER
	279	/* profiling info */
	280	int64_t tb_count1;
	281	int64_t tb_count;
	282	int64_t op_count; /* total insn count */
	283	int op_count_max; /* max insn per TB */
	284	int64_t temp_count;
	285	int temp_count_max;
a23a9ec6 FB	286	int64_t del_op_count;
	287	int64_t code_in_len;
	288	int64_t code_out_len;
	289	int64_t interm_time;
	290	int64_t code_time;
	291	int64_t la_time;
	292	int64_t restore_count;
	293	int64_t restore_time;
	294	#endif
c896fe29 FB	295	};
	296
	297	extern TCGContext tcg_ctx;
	298	extern uint16_t *gen_opc_ptr;
	299	extern TCGArg *gen_opparam_ptr;
	300	extern uint16_t gen_opc_buf[];
	301	extern TCGArg gen_opparam_buf[];
	302
	303	/* pool based memory allocation */
	304
	305	void tcg_malloc_internal(TCGContext s, int size);
	306	void tcg_pool_reset(TCGContext *s);
	307	void tcg_pool_delete(TCGContext *s);
	308
	309	static inline void *tcg_malloc(int size)
	310	{
	311	TCGContext *s = &tcg_ctx;
	312	uint8_t ptr, ptr_end;
	313	size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
	314	ptr = s->pool_cur;
	315	ptr_end = ptr + size;
	316	if (unlikely(ptr_end > s->pool_end)) {
	317	return tcg_malloc_internal(&tcg_ctx, size);
	318	} else {
	319	s->pool_cur = ptr_end;
	320	return ptr;
	321	}
	322	}
	323
	324	void tcg_context_init(TCGContext *s);
	325	void tcg_func_start(TCGContext *s);
	326
54604f74 AJ	327	int tcg_gen_code(TCGContext s, uint8_t gen_code_buf);
54604f74 AJ	328	int tcg_gen_code_search_pc(TCGContext s, uint8_t gen_code_buf, long offset);
c896fe29 FB	329
	330	void tcg_set_frame(TCGContext *s, int reg,
	331	tcg_target_long start, tcg_target_long size);
a7812ae4 PB	332
	333	TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
	334	TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
	335	const char *name);
	336	TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
	337	static inline TCGv_i32 tcg_temp_new_i32(void)
	338	{
	339	return tcg_temp_new_internal_i32(0);
	340	}
	341	static inline TCGv_i32 tcg_temp_local_new_i32(void)
	342	{
	343	return tcg_temp_new_internal_i32(1);
	344	}
	345	void tcg_temp_free_i32(TCGv_i32 arg);
	346	char tcg_get_arg_str_i32(TCGContext s, char *buf, int buf_size, TCGv_i32 arg);
	347
	348	TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
	349	TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
	350	const char *name);
	351	TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
	352	static inline TCGv_i64 tcg_temp_new_i64(void)
641d5fbe	353	{
a7812ae4	354	return tcg_temp_new_internal_i64(0);
641d5fbe	355	}
a7812ae4	356	static inline TCGv_i64 tcg_temp_local_new_i64(void)
641d5fbe	357	{
a7812ae4	358	return tcg_temp_new_internal_i64(1);
641d5fbe	359	}
a7812ae4 PB	360	void tcg_temp_free_i64(TCGv_i64 arg);
	361	char tcg_get_arg_str_i64(TCGContext s, char *buf, int buf_size, TCGv_i64 arg);
	362
a23a9ec6 FB	363	void tcg_dump_info(FILE *f,
a23a9ec6 FB	364	int (cpu_fprintf)(FILE f, const char *fmt, ...));
c896fe29 FB	365
	366	#define TCG_CT_ALIAS 0x80
	367	#define TCG_CT_IALIAS 0x40
	368	#define TCG_CT_REG 0x01
	369	#define TCG_CT_CONST 0x02 /* any constant of register size */
	370
	371	typedef struct TCGArgConstraint {
5ff9d6a4 FB	372	uint16_t ct;
5ff9d6a4 FB	373	uint8_t alias_index;
c896fe29 FB	374	union {
	375	TCGRegSet regs;
	376	} u;
	377	} TCGArgConstraint;
	378
	379	#define TCG_MAX_OP_ARGS 16
	380
	381	#define TCG_OPF_BB_END 0x01 /* instruction defines the end of a basic
	382	block */
b03cce8e FB	383	#define TCG_OPF_CALL_CLOBBER 0x02 /* instruction clobbers call registers
	384	and potentially update globals. */
	385	#define TCG_OPF_SIDE_EFFECTS 0x04 /* instruction has side effects : it
	386	cannot be removed if its output
	387	are not used */
c896fe29 FB	388
	389	typedef struct TCGOpDef {
	390	const char *name;
	391	uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
	392	uint8_t flags;
	393	uint16_t copy_size;
	394	TCGArgConstraint *args_ct;
	395	int *sorted_args;
	396	} TCGOpDef;
	397
	398	typedef struct TCGTargetOpDef {
	399	int op;
	400	const char *args_ct_str[TCG_MAX_OP_ARGS];
	401	} TCGTargetOpDef;
	402
c896fe29	403	void tcg_target_init(TCGContext *s);
b03cce8e	404	void tcg_target_qemu_prologue(TCGContext *s);
c896fe29 FB	405
	406	#define tcg_abort() \
	407	do {\
	408	fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
	409	abort();\
	410	} while (0)
	411
	412	void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
	413
c896fe29 FB	414	#if TCG_TARGET_REG_BITS == 32
	415	#define tcg_const_ptr tcg_const_i32
	416	#define tcg_add_ptr tcg_add_i32
	417	#define tcg_sub_ptr tcg_sub_i32
a7812ae4 PB	418	#define TCGv_ptr TCGv_i32
	419	#define GET_TCGV_PTR GET_TCGV_I32
	420	#define tcg_global_reg_new_ptr tcg_global_reg_new_i32
	421	#define tcg_global_mem_new_ptr tcg_global_mem_new_i32
	422	#define tcg_temp_new_ptr tcg_temp_new_i32
	423	#define tcg_temp_free_ptr tcg_temp_free_i32
c896fe29 FB	424	#else
	425	#define tcg_const_ptr tcg_const_i64
	426	#define tcg_add_ptr tcg_add_i64
	427	#define tcg_sub_ptr tcg_sub_i64
a7812ae4 PB	428	#define TCGv_ptr TCGv_i64
	429	#define GET_TCGV_PTR GET_TCGV_I64
	430	#define tcg_global_reg_new_ptr tcg_global_reg_new_i64
	431	#define tcg_global_mem_new_ptr tcg_global_mem_new_i64
	432	#define tcg_temp_new_ptr tcg_temp_new_i64
	433	#define tcg_temp_free_ptr tcg_temp_free_i64
c896fe29 FB	434	#endif
c896fe29 FB	435
a7812ae4 PB	436	void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
	437	int sizemask, TCGArg ret, int nargs, TCGArg *args);
	438
	439	void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
	440	int c, int right, int arith);
	441
	442	/* only used for debugging purposes */
	443	void tcg_register_helper(void func, const char name);
	444	const char tcg_helper_get_name(TCGContext s, void *func);
	445	void tcg_dump_ops(TCGContext s, FILE outfile);
	446
	447	void dump_ops(const uint16_t opc_buf, const TCGArg opparam_buf);
	448	TCGv_i32 tcg_const_i32(int32_t val);
	449	TCGv_i64 tcg_const_i64(int64_t val);
	450	TCGv_i32 tcg_const_local_i32(int32_t val);
	451	TCGv_i64 tcg_const_local_i64(int64_t val);
	452
c896fe29 FB	453	void tcg_out_reloc(TCGContext s, uint8_t code_ptr, int type,
c896fe29 FB	454	int label_index, long addend);
c896fe29 FB	455	const TCGArg tcg_gen_code_op(TCGContext s, int opc, const TCGArg *args1,
	456	unsigned int dead_iargs);
	457
c896fe29 FB	458	/* tcg-runtime.c */
	459	int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2);
	460	int64_t tcg_helper_shr_i64(int64_t arg1, int64_t arg2);
	461	int64_t tcg_helper_sar_i64(int64_t arg1, int64_t arg2);
	462	int64_t tcg_helper_div_i64(int64_t arg1, int64_t arg2);
	463	int64_t tcg_helper_rem_i64(int64_t arg1, int64_t arg2);
	464	uint64_t tcg_helper_divu_i64(uint64_t arg1, uint64_t arg2);
	465	uint64_t tcg_helper_remu_i64(uint64_t arg1, uint64_t arg2);
b03cce8e FB	466
b03cce8e FB	467	extern uint8_t code_gen_prologue[];
e58ffeb3	468	#if defined(_ARCH_PPC) && !defined(_ARCH_PPC64)
932a6909 FB	469	#define tcg_qemu_tb_exec(tb_ptr) \
	470	((long REGPARM __attribute__ ((longcall)) ()(void ))code_gen_prologue)(tb_ptr)
	471	#else
b03cce8e	472	#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM ()(void ))code_gen_prologue)(tb_ptr)
932a6909	473	#endif