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98fa08a5 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
d16005f8 | 2 | /* |
98fa08a5 | 3 | * Copyright (C) 2016-2021 Paul Cercueil <paul@crapouillou.net> |
d16005f8 PC |
4 | */ |
5 | ||
6 | #ifndef __LIGHTREC_PRIVATE_H__ | |
7 | #define __LIGHTREC_PRIVATE_H__ | |
8 | ||
98fa08a5 | 9 | #include "lightrec-config.h" |
d16005f8 PC |
10 | #include "disassembler.h" |
11 | #include "lightrec.h" | |
12 | ||
13 | #if ENABLE_THREADED_COMPILER | |
14 | #include <stdatomic.h> | |
15 | #endif | |
16 | ||
17 | #define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0) | |
d16005f8 PC |
18 | |
19 | #ifdef __GNUC__ | |
20 | # define likely(x) __builtin_expect(!!(x),1) | |
21 | # define unlikely(x) __builtin_expect(!!(x),0) | |
22 | #else | |
23 | # define likely(x) (x) | |
24 | # define unlikely(x) (x) | |
25 | #endif | |
26 | ||
27 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
28 | # define LE32TOH(x) __builtin_bswap32(x) | |
29 | # define HTOLE32(x) __builtin_bswap32(x) | |
30 | # define LE16TOH(x) __builtin_bswap16(x) | |
31 | # define HTOLE16(x) __builtin_bswap16(x) | |
32 | #else | |
33 | # define LE32TOH(x) (x) | |
34 | # define HTOLE32(x) (x) | |
35 | # define LE16TOH(x) (x) | |
36 | # define HTOLE16(x) (x) | |
37 | #endif | |
38 | ||
98fa08a5 PC |
39 | #if HAS_DEFAULT_ELM |
40 | #define SET_DEFAULT_ELM(table, value) [0 ... ARRAY_SIZE(table) - 1] = value | |
41 | #else | |
42 | #define SET_DEFAULT_ELM(table, value) [0] = NULL | |
43 | #endif | |
44 | ||
d16005f8 PC |
45 | /* Flags for (struct block *)->flags */ |
46 | #define BLOCK_NEVER_COMPILE BIT(0) | |
47 | #define BLOCK_SHOULD_RECOMPILE BIT(1) | |
48 | #define BLOCK_FULLY_TAGGED BIT(2) | |
a59e5536 | 49 | #define BLOCK_IS_DEAD BIT(3) |
98fa08a5 | 50 | #define BLOCK_IS_MEMSET BIT(4) |
d16005f8 PC |
51 | |
52 | #define RAM_SIZE 0x200000 | |
53 | #define BIOS_SIZE 0x80000 | |
54 | ||
55 | #define CODE_LUT_SIZE ((RAM_SIZE + BIOS_SIZE) >> 2) | |
56 | ||
98fa08a5 PC |
57 | #define REG_LO 32 |
58 | #define REG_HI 33 | |
59 | ||
d16005f8 PC |
60 | /* Definition of jit_state_t (avoids inclusion of <lightning.h>) */ |
61 | struct jit_node; | |
62 | struct jit_state; | |
63 | typedef struct jit_state jit_state_t; | |
64 | ||
65 | struct blockcache; | |
66 | struct recompiler; | |
67 | struct regcache; | |
68 | struct opcode; | |
69 | struct tinymm; | |
a59e5536 | 70 | struct reaper; |
d16005f8 PC |
71 | |
72 | struct block { | |
73 | jit_state_t *_jit; | |
d16005f8 PC |
74 | struct opcode *opcode_list; |
75 | void (*function)(void); | |
98fa08a5 PC |
76 | const u32 *code; |
77 | struct block *next; | |
d16005f8 PC |
78 | u32 pc; |
79 | u32 hash; | |
98fa08a5 PC |
80 | unsigned int code_size; |
81 | u16 nb_ops; | |
82 | u8 flags; | |
d16005f8 PC |
83 | #if ENABLE_THREADED_COMPILER |
84 | atomic_flag op_list_freed; | |
85 | #endif | |
d16005f8 PC |
86 | }; |
87 | ||
88 | struct lightrec_branch { | |
89 | struct jit_node *branch; | |
90 | u32 target; | |
91 | }; | |
92 | ||
93 | struct lightrec_branch_target { | |
94 | struct jit_node *label; | |
95 | u32 offset; | |
96 | }; | |
97 | ||
98fa08a5 PC |
98 | enum c_wrappers { |
99 | C_WRAPPER_RW, | |
100 | C_WRAPPER_RW_GENERIC, | |
98fa08a5 PC |
101 | C_WRAPPER_MTC, |
102 | C_WRAPPER_CP, | |
103 | C_WRAPPER_SYSCALL, | |
104 | C_WRAPPER_BREAK, | |
105 | C_WRAPPERS_COUNT, | |
106 | }; | |
107 | ||
108 | struct lightrec_cstate { | |
109 | struct lightrec_state *state; | |
110 | ||
d16005f8 PC |
111 | struct jit_node *branches[512]; |
112 | struct lightrec_branch local_branches[512]; | |
113 | struct lightrec_branch_target targets[512]; | |
114 | unsigned int nb_branches; | |
115 | unsigned int nb_local_branches; | |
116 | unsigned int nb_targets; | |
98fa08a5 PC |
117 | unsigned int cycles; |
118 | ||
119 | struct regcache *reg_cache; | |
120 | }; | |
121 | ||
122 | struct lightrec_state { | |
123 | struct lightrec_registers regs; | |
124 | u32 next_pc; | |
125 | u32 current_cycle; | |
126 | u32 target_cycle; | |
127 | u32 exit_flags; | |
128 | u32 old_cycle_counter; | |
129 | struct block *dispatcher, *c_wrapper_block; | |
fd58fa32 PC |
130 | void *c_wrappers[C_WRAPPERS_COUNT]; |
131 | void *wrappers_eps[C_WRAPPERS_COUNT]; | |
d16005f8 PC |
132 | struct tinymm *tinymm; |
133 | struct blockcache *block_cache; | |
d16005f8 | 134 | struct recompiler *rec; |
98fa08a5 | 135 | struct lightrec_cstate *cstate; |
a59e5536 | 136 | struct reaper *reaper; |
d16005f8 | 137 | void (*eob_wrapper_func)(void); |
98fa08a5 | 138 | void (*memset_func)(void); |
d16005f8 PC |
139 | void (*get_next_block)(void); |
140 | struct lightrec_ops ops; | |
a59e5536 | 141 | unsigned int nb_precompile; |
d16005f8 PC |
142 | unsigned int nb_maps; |
143 | const struct lightrec_mem_map *maps; | |
144 | uintptr_t offset_ram, offset_bios, offset_scratch; | |
145 | _Bool mirrors_mapped; | |
146 | _Bool invalidate_from_dma_only; | |
147 | void *code_lut[]; | |
148 | }; | |
149 | ||
150 | u32 lightrec_rw(struct lightrec_state *state, union code op, | |
98fa08a5 PC |
151 | u32 addr, u32 data, u16 *flags, |
152 | struct block *block); | |
d16005f8 | 153 | |
98fa08a5 | 154 | void lightrec_free_block(struct lightrec_state *state, struct block *block); |
d16005f8 PC |
155 | |
156 | void remove_from_code_lut(struct blockcache *cache, struct block *block); | |
157 | ||
98fa08a5 PC |
158 | const struct lightrec_mem_map * |
159 | lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr); | |
160 | ||
d16005f8 PC |
161 | static inline u32 kunseg(u32 addr) |
162 | { | |
163 | if (unlikely(addr >= 0xa0000000)) | |
164 | return addr - 0xa0000000; | |
165 | else | |
166 | return addr &~ 0x80000000; | |
167 | } | |
168 | ||
169 | static inline u32 lut_offset(u32 pc) | |
170 | { | |
171 | if (pc & BIT(28)) | |
172 | return ((pc & (BIOS_SIZE - 1)) + RAM_SIZE) >> 2; // BIOS | |
173 | else | |
174 | return (pc & (RAM_SIZE - 1)) >> 2; // RAM | |
175 | } | |
176 | ||
98fa08a5 PC |
177 | static inline u32 get_ds_pc(const struct block *block, u16 offset, s16 imm) |
178 | { | |
179 | u16 flags = block->opcode_list[offset].flags; | |
180 | ||
181 | offset += !!(OPT_SWITCH_DELAY_SLOTS && (flags & LIGHTREC_NO_DS)); | |
182 | ||
183 | return block->pc + (offset + imm << 2); | |
184 | } | |
185 | ||
186 | static inline u32 get_branch_pc(const struct block *block, u16 offset, s16 imm) | |
187 | { | |
188 | u16 flags = block->opcode_list[offset].flags; | |
189 | ||
190 | offset -= !!(OPT_SWITCH_DELAY_SLOTS && (flags & LIGHTREC_NO_DS)); | |
191 | ||
192 | return block->pc + (offset + imm << 2); | |
193 | } | |
194 | ||
d16005f8 PC |
195 | void lightrec_mtc(struct lightrec_state *state, union code op, u32 data); |
196 | u32 lightrec_mfc(struct lightrec_state *state, union code op); | |
98fa08a5 PC |
197 | void lightrec_rfe(struct lightrec_state *state); |
198 | void lightrec_cp(struct lightrec_state *state, union code op); | |
199 | ||
200 | struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state); | |
201 | void lightrec_free_cstate(struct lightrec_cstate *cstate); | |
d16005f8 PC |
202 | |
203 | union code lightrec_read_opcode(struct lightrec_state *state, u32 pc); | |
204 | ||
205 | struct block * lightrec_get_block(struct lightrec_state *state, u32 pc); | |
98fa08a5 PC |
206 | int lightrec_compile_block(struct lightrec_cstate *cstate, struct block *block); |
207 | void lightrec_free_opcode_list(struct lightrec_state *state, struct block *block); | |
208 | ||
209 | unsigned int lightrec_cycles_of_opcode(union code code); | |
210 | ||
211 | static inline u8 get_mult_div_lo(union code c) | |
212 | { | |
213 | return (OPT_FLAG_MULT_DIV && c.r.rd) ? c.r.rd : REG_LO; | |
214 | } | |
215 | ||
216 | static inline u8 get_mult_div_hi(union code c) | |
217 | { | |
218 | return (OPT_FLAG_MULT_DIV && c.r.imm) ? c.r.imm : REG_HI; | |
219 | } | |
d16005f8 PC |
220 | |
221 | #endif /* __LIGHTREC_PRIVATE_H__ */ |