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