1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
3 * Copyright (C) 2014-2021 Paul Cercueil <paul@crapouillou.net>
9 #include "lightning-wrapper.h"
11 #define NUM_REGS (JIT_V_NUM - 1)
12 #define LIGHTREC_REG_STATE (JIT_V(JIT_V_NUM - 1))
14 #if defined(__powerpc__)
15 # define NUM_TEMPS JIT_R_NUM
16 /* JIT_R0 is callee-saved on PowerPC, we have to use something else */
17 # define LIGHTREC_REG_CYCLE _R10
20 # define NUM_TEMPS (JIT_R_NUM - 1)
21 # define LIGHTREC_REG_CYCLE JIT_R0
25 #include "lightrec-private.h"
29 /* Flags for lightrec_alloc_reg_in / lightrec_alloc_reg_out. */
30 #define REG_EXT BIT(0) /* register is sign-extended */
31 #define REG_ZEXT BIT(1) /* register is zero-extended */
33 struct register_value {
38 struct native_register;
41 u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
42 u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit);
43 u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit,
45 u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit,
48 void lightrec_remap_reg(struct regcache *cache, jit_state_t *_jit,
49 u8 jit_reg, u16 reg_out, _Bool discard);
51 void lightrec_load_imm(struct regcache *cache,
52 jit_state_t *_jit, u8 jit_reg, u32 pc, u32 imm);
53 void lightrec_load_next_pc(struct regcache *cache, jit_state_t *_jit, u8 reg);
54 void lightrec_load_next_pc_imm(struct regcache *cache,
55 jit_state_t *_jit, u32 pc, u32 imm);
57 s8 lightrec_get_reg_with_value(struct regcache *cache, intptr_t value);
58 void lightrec_temp_set_value(struct regcache *cache, u8 jit_reg, intptr_t value);
59 u8 lightrec_alloc_reg_temp_with_value(struct regcache *cache,
60 jit_state_t *_jit, intptr_t value);
62 u8 lightrec_get_reg_in_flags(struct regcache *cache, u8 jit_reg);
63 void lightrec_set_reg_out_flags(struct regcache *cache, u8 jit_reg, u8 flags);
65 void lightrec_regcache_reset(struct regcache *cache);
66 void lightrec_preload_pc(struct regcache *cache, jit_state_t *_jit);
68 void lightrec_free_reg(struct regcache *cache, u8 jit_reg);
69 void lightrec_free_regs(struct regcache *cache);
70 void lightrec_clean_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
71 void lightrec_clean_regs(struct regcache *cache, jit_state_t *_jit);
72 void lightrec_unload_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
73 void lightrec_storeback_regs(struct regcache *cache, jit_state_t *_jit);
74 _Bool lightrec_has_dirty_regs(struct regcache *cache);
76 _Bool lightrec_reg_is_loaded(struct regcache *cache, u16 reg);
77 void lightrec_clean_reg_if_loaded(struct regcache *cache, jit_state_t *_jit,
78 u16 reg, _Bool unload);
79 void lightrec_discard_reg_if_loaded(struct regcache *cache, u16 reg);
81 u8 lightrec_alloc_reg_in_address(struct regcache *cache,
82 jit_state_t *_jit, u16 reg, s16 offset);
84 struct native_register * lightrec_regcache_enter_branch(struct regcache *cache);
85 void lightrec_regcache_leave_branch(struct regcache *cache,
86 struct native_register *regs);
88 struct regcache * lightrec_regcache_init(struct lightrec_state *state);
89 void lightrec_free_regcache(struct regcache *cache);
91 __cnst const char * lightrec_reg_name(u8 reg);
93 void lightrec_regcache_mark_live(struct regcache *cache, jit_state_t *_jit);
95 #endif /* __REGCACHE_H__ */