| 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| 2 | /* |
| 3 | * Copyright (C) 2014-2021 Paul Cercueil <paul@crapouillou.net> |
| 4 | */ |
| 5 | |
| 6 | #ifndef __REGCACHE_H__ |
| 7 | #define __REGCACHE_H__ |
| 8 | |
| 9 | #include "lightrec-private.h" |
| 10 | |
| 11 | #define NUM_REGS (JIT_V_NUM - 2) |
| 12 | #define NUM_TEMPS (JIT_R_NUM) |
| 13 | #define LIGHTREC_REG_STATE (JIT_V(JIT_V_NUM - 1)) |
| 14 | #define LIGHTREC_REG_CYCLE (JIT_V(JIT_V_NUM - 2)) |
| 15 | |
| 16 | /* Flags for lightrec_alloc_reg_in / lightrec_alloc_reg_out. */ |
| 17 | #define REG_EXT BIT(0) /* register is sign-extended */ |
| 18 | #define REG_ZEXT BIT(1) /* register is zero-extended */ |
| 19 | |
| 20 | struct register_value { |
| 21 | _Bool known; |
| 22 | u32 value; |
| 23 | }; |
| 24 | |
| 25 | struct native_register; |
| 26 | struct regcache; |
| 27 | |
| 28 | u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg); |
| 29 | u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit); |
| 30 | u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit, |
| 31 | u8 reg, u8 flags); |
| 32 | u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit, |
| 33 | u8 reg, u8 flags); |
| 34 | |
| 35 | u8 lightrec_request_reg_in(struct regcache *cache, jit_state_t *_jit, |
| 36 | u8 reg, u8 jit_reg); |
| 37 | |
| 38 | u8 lightrec_get_reg_in_flags(struct regcache *cache, u8 jit_reg); |
| 39 | void lightrec_set_reg_out_flags(struct regcache *cache, u8 jit_reg, u8 flags); |
| 40 | |
| 41 | void lightrec_regcache_reset(struct regcache *cache); |
| 42 | |
| 43 | void lightrec_lock_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg); |
| 44 | void lightrec_free_reg(struct regcache *cache, u8 jit_reg); |
| 45 | void lightrec_free_regs(struct regcache *cache); |
| 46 | void lightrec_clean_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg); |
| 47 | void lightrec_clean_regs(struct regcache *cache, jit_state_t *_jit); |
| 48 | void lightrec_unload_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg); |
| 49 | void lightrec_storeback_regs(struct regcache *cache, jit_state_t *_jit); |
| 50 | |
| 51 | void lightrec_clean_reg_if_loaded(struct regcache *cache, jit_state_t *_jit, |
| 52 | u8 reg, _Bool unload); |
| 53 | void lightrec_discard_reg_if_loaded(struct regcache *cache, u8 reg); |
| 54 | |
| 55 | u8 lightrec_alloc_reg_in_address(struct regcache *cache, |
| 56 | jit_state_t *_jit, u8 reg, s16 offset); |
| 57 | |
| 58 | struct native_register * lightrec_regcache_enter_branch(struct regcache *cache); |
| 59 | void lightrec_regcache_leave_branch(struct regcache *cache, |
| 60 | struct native_register *regs); |
| 61 | |
| 62 | struct regcache * lightrec_regcache_init(struct lightrec_state *state); |
| 63 | void lightrec_free_regcache(struct regcache *cache); |
| 64 | |
| 65 | const char * lightrec_reg_name(u8 reg); |
| 66 | |
| 67 | void lightrec_regcache_mark_live(struct regcache *cache, jit_state_t *_jit); |
| 68 | |
| 69 | #endif /* __REGCACHE_H__ */ |