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/*
* Copyright (C) 2014-2020 Paul Cercueil <paul@crapouillou.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
#ifndef __REGCACHE_H__
#define __REGCACHE_H__
#include "lightrec-private.h"
#define NUM_REGS (JIT_V_NUM - 2)
#define NUM_TEMPS (JIT_R_NUM)
#define LIGHTREC_REG_STATE (JIT_V(JIT_V_NUM - 1))
#define LIGHTREC_REG_CYCLE (JIT_V(JIT_V_NUM - 2))
#define REG_LO 32
#define REG_HI 33
struct register_value {
_Bool known;
u32 value;
};
struct native_register;
struct regcache;
u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit);
u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit, u8 reg);
u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit, u8 reg);
u8 lightrec_alloc_reg_out_ext(struct regcache *cache,
jit_state_t *_jit, u8 reg);
u8 lightrec_alloc_reg_in_ext(struct regcache *cache, jit_state_t *_jit, u8 reg);
u8 lightrec_request_reg_in(struct regcache *cache, jit_state_t *_jit,
u8 reg, u8 jit_reg);
void lightrec_regcache_reset(struct regcache *cache);
void lightrec_lock_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_free_reg(struct regcache *cache, u8 jit_reg);
void lightrec_free_regs(struct regcache *cache);
void lightrec_clean_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_clean_regs(struct regcache *cache, jit_state_t *_jit);
void lightrec_unload_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_storeback_regs(struct regcache *cache, jit_state_t *_jit);
void lightrec_clean_reg_if_loaded(struct regcache *cache, jit_state_t *_jit,
u8 reg, _Bool unload);
u8 lightrec_alloc_reg_in_address(struct regcache *cache,
jit_state_t *_jit, u8 reg, s16 offset);
struct native_register * lightrec_regcache_enter_branch(struct regcache *cache);
void lightrec_regcache_leave_branch(struct regcache *cache,
struct native_register *regs);
struct regcache * lightrec_regcache_init(struct lightrec_state *state);
void lightrec_free_regcache(struct regcache *cache);
const char * lightrec_reg_name(u8 reg);
void lightrec_regcache_mark_live(struct regcache *cache, jit_state_t *_jit);
#endif /* __REGCACHE_H__ */
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