[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"
#include "tcg-runtime.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) |= 1L << (r)
#define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (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);

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	25	#include "tcg-target.h"
96e132e2	26	#include "tcg-runtime.h"
c896fe29 FB	27
	28	#if TCG_TARGET_REG_BITS == 32
	29	typedef int32_t tcg_target_long;
	30	typedef uint32_t tcg_target_ulong;
	31	#define TCG_PRIlx PRIx32
	32	#define TCG_PRIld PRId32
	33	#elif TCG_TARGET_REG_BITS == 64
	34	typedef int64_t tcg_target_long;
	35	typedef uint64_t tcg_target_ulong;
	36	#define TCG_PRIlx PRIx64
	37	#define TCG_PRIld PRId64
	38	#else
	39	#error unsupported
	40	#endif
	41
	42	#if TCG_TARGET_NB_REGS <= 32
	43	typedef uint32_t TCGRegSet;
	44	#elif TCG_TARGET_NB_REGS <= 64
	45	typedef uint64_t TCGRegSet;
	46	#else
	47	#error unsupported
	48	#endif
	49
	50	enum {
	51	#define DEF(s, n, copy_size) INDEX_op_ ## s,
	52	#include "tcg-opc.h"
	53	#undef DEF
	54	NB_OPS,
	55	};
	56
	57	#define tcg_regset_clear(d) (d) = 0
	58	#define tcg_regset_set(d, s) (d) = (s)
	59	#define tcg_regset_set32(d, reg, val32) (d) \|= (val32) << (reg)
7d301752 AJ	60	#define tcg_regset_set_reg(d, r) (d) \|= 1L << (r)
7d301752 AJ	61	#define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (r))
c896fe29 FB	62	#define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
	63	#define tcg_regset_or(d, a, b) (d) = (a) \| (b)
	64	#define tcg_regset_and(d, a, b) (d) = (a) & (b)
	65	#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
	66	#define tcg_regset_not(d, a) (d) = ~(a)
	67
	68	typedef struct TCGRelocation {
	69	struct TCGRelocation *next;
	70	int type;
	71	uint8_t *ptr;
	72	tcg_target_long addend;
	73	} TCGRelocation;
	74
	75	typedef struct TCGLabel {
c44f945a	76	int has_value;
c896fe29 FB	77	union {
	78	tcg_target_ulong value;
	79	TCGRelocation *first_reloc;
	80	} u;
	81	} TCGLabel;
	82
	83	typedef struct TCGPool {
	84	struct TCGPool *next;
c44f945a BS	85	int size;
c44f945a BS	86	uint8_t data[0] __attribute__ ((aligned));
c896fe29 FB	87	} TCGPool;
	88
	89	#define TCG_POOL_CHUNK_SIZE 32768
	90
	91	#define TCG_MAX_LABELS 512
	92
c4071c90	93	#define TCG_MAX_TEMPS 512
c896fe29	94
b03cce8e FB	95	/* when the size of the arguments of a called function is smaller than
	96	this value, they are statically allocated in the TB stack frame */
	97	#define TCG_STATIC_CALL_ARGS_SIZE 128
	98
c896fe29 FB	99	typedef int TCGType;
	100
	101	#define TCG_TYPE_I32 0
	102	#define TCG_TYPE_I64 1
e8996ee0	103	#define TCG_TYPE_COUNT 2 /* number of different types */
c896fe29 FB	104
	105	#if TCG_TARGET_REG_BITS == 32
	106	#define TCG_TYPE_PTR TCG_TYPE_I32
	107	#else
	108	#define TCG_TYPE_PTR TCG_TYPE_I64
	109	#endif
	110
	111	typedef tcg_target_ulong TCGArg;
	112
ac56dd48 PB	113	/* Define a type and accessor macros for varables. Using a struct is
	114	nice because it gives some level of type safely. Ideally the compiler
	115	be able to see through all this. However in practice this is not true,
	116	expecially on targets with braindamaged ABIs (e.g. i386).
	117	We use plain int by default to avoid this runtime overhead.
	118	Users of tcg_gen_* don't need to know about any of this, and should
a7812ae4 PB	119	treat TCGv as an opaque type.
	120	In additon we do typechecking for different types of variables. TCGv_i32
	121	and TCGv_i64 are 32/64-bit variables respectively. TCGv and TCGv_ptr
	122	are aliases for target_ulong and host pointer sized values respectively.
	123	*/
ac56dd48	124
092c73ee	125	#ifdef CONFIG_DEBUG_TCG
f8393946 AJ	126	#define DEBUG_TCGV 1
f8393946 AJ	127	#endif
ac56dd48 PB	128
	129	#ifdef DEBUG_TCGV
	130
	131	typedef struct
	132	{
a810a2de	133	int i32;
a7812ae4	134	} TCGv_i32;
ac56dd48	135
a7812ae4 PB	136	typedef struct
a7812ae4 PB	137	{
a810a2de	138	int i64;
a7812ae4 PB	139	} TCGv_i64;
	140
	141	#define MAKE_TCGV_I32(i) __extension__ \
	142	({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
	143	#define MAKE_TCGV_I64(i) __extension__ \
	144	({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
a810a2de BS	145	#define GET_TCGV_I32(t) ((t).i32)
a810a2de BS	146	#define GET_TCGV_I64(t) ((t).i64)
ac56dd48	147	#if TCG_TARGET_REG_BITS == 32
a7812ae4 PB	148	#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
a7812ae4 PB	149	#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
ac56dd48 PB	150	#endif
	151
	152	#else /* !DEBUG_TCGV */
	153
a7812ae4 PB	154	typedef int TCGv_i32;
	155	typedef int TCGv_i64;
	156	#define MAKE_TCGV_I32(x) (x)
	157	#define MAKE_TCGV_I64(x) (x)
	158	#define GET_TCGV_I32(t) (t)
	159	#define GET_TCGV_I64(t) (t)
44e6acb0	160
ac56dd48	161	#if TCG_TARGET_REG_BITS == 32
a7812ae4	162	#define TCGV_LOW(t) (t)
ac56dd48 PB	163	#define TCGV_HIGH(t) ((t) + 1)
	164	#endif
	165
	166	#endif /* DEBUG_TCGV */
	167
43e860ef AJ	168	#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
	169	#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
	170
a50f5b91	171	/* Dummy definition to avoid compiler warnings. */
a7812ae4 PB	172	#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
a7812ae4 PB	173	#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
a50f5b91	174
c896fe29 FB	175	/* call flags */
	176	#define TCG_CALL_TYPE_MASK 0x000f
	177	#define TCG_CALL_TYPE_STD 0x0000 /* standard C call */
	178	#define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
	179	#define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
	180	#define TCG_CALL_TYPE_REGPARM 0x0003 /* i386 style regparm call (3 regs) */
3e00b3f5	181	/* A pure function only reads its arguments and TCG global variables
34d5a9ff	182	and cannot raise exceptions. Hence a call to a pure function can be
c6e113f5 FB	183	safely suppressed if the return value is not used. */
c6e113f5 FB	184	#define TCG_CALL_PURE 0x0010
b9c18f56	185	/* A const function only reads its arguments and does not use TCG
3e00b3f5 AJ	186	global variables. Hence a call to such a function does not
3e00b3f5 AJ	187	save TCG global variables back to their canonical location. */
b9c18f56	188	#define TCG_CALL_CONST 0x0020
c896fe29	189
39cf05d3	190	/* used to align parameters */
a7812ae4	191	#define TCG_CALL_DUMMY_TCGV MAKE_TCGV_I32(-1)
39cf05d3 FB	192	#define TCG_CALL_DUMMY_ARG ((TCGArg)(-1))
39cf05d3 FB	193
c896fe29 FB	194	typedef enum {
	195	TCG_COND_EQ,
	196	TCG_COND_NE,
	197	TCG_COND_LT,
	198	TCG_COND_GE,
	199	TCG_COND_LE,
	200	TCG_COND_GT,
	201	/* unsigned */
	202	TCG_COND_LTU,
	203	TCG_COND_GEU,
	204	TCG_COND_LEU,
	205	TCG_COND_GTU,
	206	} TCGCond;
	207
	208	#define TEMP_VAL_DEAD 0
	209	#define TEMP_VAL_REG 1
	210	#define TEMP_VAL_MEM 2
	211	#define TEMP_VAL_CONST 3
	212
	213	/* XXX: optimize memory layout */
	214	typedef struct TCGTemp {
	215	TCGType base_type;
	216	TCGType type;
	217	int val_type;
	218	int reg;
	219	tcg_target_long val;
	220	int mem_reg;
	221	tcg_target_long mem_offset;
	222	unsigned int fixed_reg:1;
	223	unsigned int mem_coherent:1;
	224	unsigned int mem_allocated:1;
641d5fbe FB	225	unsigned int temp_local:1; /* If true, the temp is saved accross
	226	basic blocks. Otherwise, it is not
	227	preserved accross basic blocks. */
e8996ee0 FB	228	unsigned int temp_allocated:1; /* never used for code gen */
	229	/* index of next free temp of same base type, -1 if end */
	230	int next_free_temp;
c896fe29 FB	231	const char *name;
	232	} TCGTemp;
	233
	234	typedef struct TCGHelperInfo {
4dc81f28	235	tcg_target_ulong func;
c896fe29 FB	236	const char *name;
	237	} TCGHelperInfo;
	238
	239	typedef struct TCGContext TCGContext;
	240
c896fe29 FB	241	struct TCGContext {
	242	uint8_t pool_cur, pool_end;
	243	TCGPool pool_first, pool_current;
	244	TCGLabel *labels;
	245	int nb_labels;
	246	TCGTemp temps; / globals first, temps after */
	247	int nb_globals;
	248	int nb_temps;
641d5fbe FB	249	/* index of free temps, -1 if none */
641d5fbe FB	250	int first_free_temp[TCG_TYPE_COUNT * 2];
c896fe29 FB	251
	252	/* goto_tb support */
	253	uint8_t *code_buf;
	254	unsigned long *tb_next;
	255	uint16_t *tb_next_offset;
	256	uint16_t tb_jmp_offset; / != NULL if USE_DIRECT_JUMP */
	257
641d5fbe	258	/* liveness analysis */
c896fe29 FB	259	uint16_t op_dead_iargs; / for each operation, each bit tells if the
c896fe29 FB	260	corresponding input argument is dead */
641d5fbe	261
c896fe29 FB	262	/* tells in which temporary a given register is. It does not take
	263	into account fixed registers */
	264	int reg_to_temp[TCG_TARGET_NB_REGS];
	265	TCGRegSet reserved_regs;
	266	tcg_target_long current_frame_offset;
	267	tcg_target_long frame_start;
	268	tcg_target_long frame_end;
	269	int frame_reg;
	270
	271	uint8_t *code_ptr;
	272	TCGTemp static_temps[TCG_MAX_TEMPS];
	273
c896fe29 FB	274	TCGHelperInfo *helpers;
	275	int nb_helpers;
	276	int allocated_helpers;
e8996ee0	277	int helpers_sorted;
a23a9ec6 FB	278
	279	#ifdef CONFIG_PROFILER
	280	/* profiling info */
	281	int64_t tb_count1;
	282	int64_t tb_count;
	283	int64_t op_count; /* total insn count */
	284	int op_count_max; /* max insn per TB */
	285	int64_t temp_count;
	286	int temp_count_max;
a23a9ec6 FB	287	int64_t del_op_count;
	288	int64_t code_in_len;
	289	int64_t code_out_len;
	290	int64_t interm_time;
	291	int64_t code_time;
	292	int64_t la_time;
	293	int64_t restore_count;
	294	int64_t restore_time;
	295	#endif
c896fe29 FB	296	};
	297
	298	extern TCGContext tcg_ctx;
	299	extern uint16_t *gen_opc_ptr;
	300	extern TCGArg *gen_opparam_ptr;
	301	extern uint16_t gen_opc_buf[];
	302	extern TCGArg gen_opparam_buf[];
	303
	304	/* pool based memory allocation */
	305
	306	void tcg_malloc_internal(TCGContext s, int size);
	307	void tcg_pool_reset(TCGContext *s);
	308	void tcg_pool_delete(TCGContext *s);
	309
	310	static inline void *tcg_malloc(int size)
	311	{
	312	TCGContext *s = &tcg_ctx;
	313	uint8_t ptr, ptr_end;
	314	size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
	315	ptr = s->pool_cur;
	316	ptr_end = ptr + size;
	317	if (unlikely(ptr_end > s->pool_end)) {
	318	return tcg_malloc_internal(&tcg_ctx, size);
	319	} else {
	320	s->pool_cur = ptr_end;
	321	return ptr;
	322	}
	323	}
	324
	325	void tcg_context_init(TCGContext *s);
	326	void tcg_func_start(TCGContext *s);
	327
54604f74 AJ	328	int tcg_gen_code(TCGContext s, uint8_t gen_code_buf);
54604f74 AJ	329	int tcg_gen_code_search_pc(TCGContext s, uint8_t gen_code_buf, long offset);
c896fe29 FB	330
	331	void tcg_set_frame(TCGContext *s, int reg,
	332	tcg_target_long start, tcg_target_long size);
a7812ae4 PB	333
	334	TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
	335	TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
	336	const char *name);
	337	TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
	338	static inline TCGv_i32 tcg_temp_new_i32(void)
	339	{
	340	return tcg_temp_new_internal_i32(0);
	341	}
	342	static inline TCGv_i32 tcg_temp_local_new_i32(void)
	343	{
	344	return tcg_temp_new_internal_i32(1);
	345	}
	346	void tcg_temp_free_i32(TCGv_i32 arg);
	347	char tcg_get_arg_str_i32(TCGContext s, char *buf, int buf_size, TCGv_i32 arg);
	348
	349	TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
	350	TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
	351	const char *name);
	352	TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
	353	static inline TCGv_i64 tcg_temp_new_i64(void)
641d5fbe	354	{
a7812ae4	355	return tcg_temp_new_internal_i64(0);
641d5fbe	356	}
a7812ae4	357	static inline TCGv_i64 tcg_temp_local_new_i64(void)
641d5fbe	358	{
a7812ae4	359	return tcg_temp_new_internal_i64(1);
641d5fbe	360	}
a7812ae4 PB	361	void tcg_temp_free_i64(TCGv_i64 arg);
	362	char tcg_get_arg_str_i64(TCGContext s, char *buf, int buf_size, TCGv_i64 arg);
	363
a23a9ec6 FB	364	void tcg_dump_info(FILE *f,
a23a9ec6 FB	365	int (cpu_fprintf)(FILE f, const char *fmt, ...));
c896fe29 FB	366
	367	#define TCG_CT_ALIAS 0x80
	368	#define TCG_CT_IALIAS 0x40
	369	#define TCG_CT_REG 0x01
	370	#define TCG_CT_CONST 0x02 /* any constant of register size */
	371
	372	typedef struct TCGArgConstraint {
5ff9d6a4 FB	373	uint16_t ct;
5ff9d6a4 FB	374	uint8_t alias_index;
c896fe29 FB	375	union {
	376	TCGRegSet regs;
	377	} u;
	378	} TCGArgConstraint;
	379
	380	#define TCG_MAX_OP_ARGS 16
	381
	382	#define TCG_OPF_BB_END 0x01 /* instruction defines the end of a basic
	383	block */
b03cce8e FB	384	#define TCG_OPF_CALL_CLOBBER 0x02 /* instruction clobbers call registers
	385	and potentially update globals. */
	386	#define TCG_OPF_SIDE_EFFECTS 0x04 /* instruction has side effects : it
	387	cannot be removed if its output
	388	are not used */
c896fe29 FB	389
	390	typedef struct TCGOpDef {
	391	const char *name;
	392	uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
	393	uint8_t flags;
	394	uint16_t copy_size;
	395	TCGArgConstraint *args_ct;
	396	int *sorted_args;
	397	} TCGOpDef;
	398
	399	typedef struct TCGTargetOpDef {
	400	int op;
	401	const char *args_ct_str[TCG_MAX_OP_ARGS];
	402	} TCGTargetOpDef;
	403
c896fe29	404	void tcg_target_init(TCGContext *s);
b03cce8e	405	void tcg_target_qemu_prologue(TCGContext *s);
c896fe29 FB	406
	407	#define tcg_abort() \
	408	do {\
	409	fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
	410	abort();\
	411	} while (0)
	412
	413	void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
	414
c896fe29 FB	415	#if TCG_TARGET_REG_BITS == 32
	416	#define tcg_const_ptr tcg_const_i32
	417	#define tcg_add_ptr tcg_add_i32
	418	#define tcg_sub_ptr tcg_sub_i32
a7812ae4 PB	419	#define TCGv_ptr TCGv_i32
	420	#define GET_TCGV_PTR GET_TCGV_I32
	421	#define tcg_global_reg_new_ptr tcg_global_reg_new_i32
	422	#define tcg_global_mem_new_ptr tcg_global_mem_new_i32
	423	#define tcg_temp_new_ptr tcg_temp_new_i32
	424	#define tcg_temp_free_ptr tcg_temp_free_i32
c896fe29 FB	425	#else
	426	#define tcg_const_ptr tcg_const_i64
	427	#define tcg_add_ptr tcg_add_i64
	428	#define tcg_sub_ptr tcg_sub_i64
a7812ae4 PB	429	#define TCGv_ptr TCGv_i64
	430	#define GET_TCGV_PTR GET_TCGV_I64
	431	#define tcg_global_reg_new_ptr tcg_global_reg_new_i64
	432	#define tcg_global_mem_new_ptr tcg_global_mem_new_i64
	433	#define tcg_temp_new_ptr tcg_temp_new_i64
	434	#define tcg_temp_free_ptr tcg_temp_free_i64
c896fe29 FB	435	#endif
c896fe29 FB	436
a7812ae4 PB	437	void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
	438	int sizemask, TCGArg ret, int nargs, TCGArg *args);
	439
	440	void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
	441	int c, int right, int arith);
	442
	443	/* only used for debugging purposes */
	444	void tcg_register_helper(void func, const char name);
	445	const char tcg_helper_get_name(TCGContext s, void *func);
	446	void tcg_dump_ops(TCGContext s, FILE outfile);
	447
	448	void dump_ops(const uint16_t opc_buf, const TCGArg opparam_buf);
	449	TCGv_i32 tcg_const_i32(int32_t val);
	450	TCGv_i64 tcg_const_i64(int64_t val);
	451	TCGv_i32 tcg_const_local_i32(int32_t val);
	452	TCGv_i64 tcg_const_local_i64(int64_t val);
	453
c896fe29 FB	454	void tcg_out_reloc(TCGContext s, uint8_t code_ptr, int type,
c896fe29 FB	455	int label_index, long addend);
c896fe29	456
b03cce8e	457	extern uint8_t code_gen_prologue[];
e58ffeb3	458	#if defined(_ARCH_PPC) && !defined(_ARCH_PPC64)
932a6909 FB	459	#define tcg_qemu_tb_exec(tb_ptr) \
	460	((long REGPARM __attribute__ ((longcall)) ()(void ))code_gen_prologue)(tb_ptr)
	461	#else
b03cce8e	462	#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM ()(void ))code_gen_prologue)(tb_ptr)
932a6909	463	#endif