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typedef size_t regmask_t;
enum {
MONO_REG_FREE,
MONO_REG_FREEABLE,
MONO_REG_MOVEABLE,
MONO_REG_BUSY,
MONO_REG_RESERVED
};
enum {
MONO_REG_INT,
MONO_REG_DOUBLE
};
typedef struct {
/* symbolic registers */
int next_vireg;
int next_vfreg;
/* hard registers */
int num_iregs;
int num_fregs;
regmask_t ifree_mask;
regmask_t ffree_mask;
/* symbolic -> hard register assignment */
/*
* If the register is spilled, then this contains -spill - 1, where 'spill'
* is the index of the spill variable.
*/
int *iassign;
int *fassign;
/* hard -> symbolic */
int isymbolic [MONO_MAX_IREGS];
int fsymbolic [MONO_MAX_FREGS];
int max_ireg;
int ispills;
} MonoRegState;
#define mono_regstate_next_int(rs) ((rs)->next_vireg++)
#define mono_regstate_next_float(rs) ((rs)->next_vfreg++)
MonoRegState* mono_regstate_new (void);
void mono_regstate_free (MonoRegState *rs);
void mono_regstate_reset (MonoRegState *rs);
void mono_regstate_assign (MonoRegState *rs);
int mono_regstate_alloc_int (MonoRegState *rs, regmask_t allow);
void mono_regstate_free_int (MonoRegState *rs, int reg);
int mono_regstate_alloc_float (MonoRegState *rs, regmask_t allow);
void mono_regstate_free_float (MonoRegState *rs, int reg);
inline int mono_regstate_next_long (MonoRegState *rs);
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