1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
3 * Copyright (C) 2016-2021 Paul Cercueil <paul@crapouillou.net>
6 #ifndef __LIGHTREC_PRIVATE_H__
7 #define __LIGHTREC_PRIVATE_H__
9 #include "lightning-wrapper.h"
10 #include "lightrec-config.h"
11 #include "disassembler.h"
14 #if ENABLE_THREADED_COMPILER
15 #include <stdatomic.h>
18 #define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0)
21 # define likely(x) __builtin_expect(!!(x),1)
22 # define unlikely(x) __builtin_expect(!!(x),0)
24 # define likely(x) (x)
25 # define unlikely(x) (x)
28 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
29 # define LE32TOH(x) __builtin_bswap32(x)
30 # define HTOLE32(x) __builtin_bswap32(x)
31 # define LE16TOH(x) __builtin_bswap16(x)
32 # define HTOLE16(x) __builtin_bswap16(x)
34 # define LE32TOH(x) (x)
35 # define HTOLE32(x) (x)
36 # define LE16TOH(x) (x)
37 # define HTOLE16(x) (x)
41 #define SET_DEFAULT_ELM(table, value) [0 ... ARRAY_SIZE(table) - 1] = value
43 #define SET_DEFAULT_ELM(table, value) [0] = NULL
46 #define fallthrough do {} while (0) /* fall-through */
48 /* Flags for (struct block *)->flags */
49 #define BLOCK_NEVER_COMPILE BIT(0)
50 #define BLOCK_SHOULD_RECOMPILE BIT(1)
51 #define BLOCK_FULLY_TAGGED BIT(2)
52 #define BLOCK_IS_DEAD BIT(3)
53 #define BLOCK_IS_MEMSET BIT(4)
55 #define RAM_SIZE 0x200000
56 #define BIOS_SIZE 0x80000
58 #define CODE_LUT_SIZE ((RAM_SIZE + BIOS_SIZE) >> 2)
63 /* Definition of jit_state_t (avoids inclusion of <lightning.h>) */
66 typedef struct jit_state jit_state_t;
75 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
84 struct opcode *opcode_list;
85 void (*function)(void);
91 unsigned int code_size;
94 #if ENABLE_THREADED_COMPILER
95 atomic_flag op_list_freed;
99 struct lightrec_branch {
100 struct jit_node *branch;
104 struct lightrec_branch_target {
105 struct jit_node *label;
111 C_WRAPPER_RW_GENERIC,
119 struct lightrec_cstate {
120 struct lightrec_state *state;
122 struct jit_node *branches[512];
123 struct lightrec_branch local_branches[512];
124 struct lightrec_branch_target targets[512];
125 unsigned int nb_branches;
126 unsigned int nb_local_branches;
127 unsigned int nb_targets;
130 struct regcache *reg_cache;
133 struct lightrec_state {
134 struct lightrec_registers regs;
139 u32 old_cycle_counter;
140 struct block *dispatcher, *c_wrapper_block;
141 void *c_wrappers[C_WRAPPERS_COUNT];
142 void *wrappers_eps[C_WRAPPERS_COUNT];
143 struct blockcache *block_cache;
144 struct recompiler *rec;
145 struct lightrec_cstate *cstate;
146 struct reaper *reaper;
148 void (*eob_wrapper_func)(void);
149 void (*memset_func)(void);
150 void (*get_next_block)(void);
151 struct lightrec_ops ops;
152 unsigned int nb_precompile;
153 unsigned int nb_maps;
154 const struct lightrec_mem_map *maps;
155 uintptr_t offset_ram, offset_bios, offset_scratch;
156 _Bool with_32bit_lut;
157 _Bool mirrors_mapped;
158 _Bool invalidate_from_dma_only;
162 u32 lightrec_rw(struct lightrec_state *state, union code op,
163 u32 addr, u32 data, u32 *flags,
164 struct block *block);
166 void lightrec_free_block(struct lightrec_state *state, struct block *block);
168 void remove_from_code_lut(struct blockcache *cache, struct block *block);
171 lightrec_get_map_idx(struct lightrec_state *state, u32 kaddr);
173 const struct lightrec_mem_map *
174 lightrec_get_map(struct lightrec_state *state, void **host, u32 kaddr);
176 static inline u32 kunseg(u32 addr)
178 if (unlikely(addr >= 0xa0000000))
179 return addr - 0xa0000000;
181 return addr &~ 0x80000000;
184 static inline u32 lut_offset(u32 pc)
187 return ((pc & (BIOS_SIZE - 1)) + RAM_SIZE) >> 2; // BIOS
189 return (pc & (RAM_SIZE - 1)) >> 2; // RAM
192 static inline _Bool is_big_endian(void)
194 return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__;
197 static inline _Bool lut_is_32bit(const struct lightrec_state *state)
199 return __WORDSIZE == 32 ||
200 (ENABLE_CODE_BUFFER && state->with_32bit_lut);
203 static inline size_t lut_elm_size(const struct lightrec_state *state)
205 return lut_is_32bit(state) ? 4 : sizeof(void *);
208 static inline void ** lut_address(struct lightrec_state *state, u32 offset)
210 if (lut_is_32bit(state))
211 return (void **) ((uintptr_t) state->code_lut + offset * 4);
213 return &state->code_lut[offset];
216 static inline void * lut_read(struct lightrec_state *state, u32 offset)
218 void **lut_entry = lut_address(state, offset);
220 if (lut_is_32bit(state))
221 return (void *)(uintptr_t) *(u32 *) lut_entry;
226 static inline void lut_write(struct lightrec_state *state, u32 offset, void *ptr)
228 void **lut_entry = lut_address(state, offset);
230 if (lut_is_32bit(state))
231 *(u32 *) lut_entry = (u32)(uintptr_t) ptr;
236 static inline u32 get_ds_pc(const struct block *block, u16 offset, s16 imm)
238 u16 flags = block->opcode_list[offset].flags;
240 offset += op_flag_no_ds(flags);
242 return block->pc + (offset + imm << 2);
245 static inline u32 get_branch_pc(const struct block *block, u16 offset, s16 imm)
247 u16 flags = block->opcode_list[offset].flags;
249 offset -= op_flag_no_ds(flags);
251 return block->pc + (offset + imm << 2);
254 void lightrec_mtc(struct lightrec_state *state, union code op, u32 data);
255 u32 lightrec_mfc(struct lightrec_state *state, union code op);
256 void lightrec_rfe(struct lightrec_state *state);
257 void lightrec_cp(struct lightrec_state *state, union code op);
259 struct lightrec_cstate * lightrec_create_cstate(struct lightrec_state *state);
260 void lightrec_free_cstate(struct lightrec_cstate *cstate);
262 union code lightrec_read_opcode(struct lightrec_state *state, u32 pc);
264 int lightrec_compile_block(struct lightrec_cstate *cstate, struct block *block);
265 void lightrec_free_opcode_list(struct lightrec_state *state, struct block *block);
267 unsigned int lightrec_cycles_of_opcode(union code code);
269 static inline u8 get_mult_div_lo(union code c)
271 return (OPT_FLAG_MULT_DIV && c.r.rd) ? c.r.rd : REG_LO;
274 static inline u8 get_mult_div_hi(union code c)
276 return (OPT_FLAG_MULT_DIV && c.r.imm) ? c.r.imm : REG_HI;
279 static inline s16 s16_max(s16 a, s16 b)
281 return a > b ? a : b;
284 #endif /* __LIGHTREC_PRIVATE_H__ */