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/*
* Copyright (C) 2016 Paul Cercueil <paul@crapouillou.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
#ifndef __LIGHTREC_PRIVATE_H__
#define __LIGHTREC_PRIVATE_H__
#include "config.h"
#include "disassembler.h"
#include "lightrec.h"
#if ENABLE_THREADED_COMPILER
#include <stdatomic.h>
#endif
#define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0)
#define BIT(x) (1 << (x))
#ifdef __GNUC__
# define likely(x) __builtin_expect(!!(x),1)
# define unlikely(x) __builtin_expect(!!(x),0)
#else
# define likely(x) (x)
# define unlikely(x) (x)
#endif
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
# define LE32TOH(x) __builtin_bswap32(x)
# define HTOLE32(x) __builtin_bswap32(x)
# define LE16TOH(x) __builtin_bswap16(x)
# define HTOLE16(x) __builtin_bswap16(x)
#else
# define LE32TOH(x) (x)
# define HTOLE32(x) (x)
# define LE16TOH(x) (x)
# define HTOLE16(x) (x)
#endif
/* Flags for (struct block *)->flags */
#define BLOCK_NEVER_COMPILE BIT(0)
#define BLOCK_SHOULD_RECOMPILE BIT(1)
#define BLOCK_FULLY_TAGGED BIT(2)
#define RAM_SIZE 0x200000
#define BIOS_SIZE 0x80000
#define CODE_LUT_SIZE ((RAM_SIZE + BIOS_SIZE) >> 2)
/* Definition of jit_state_t (avoids inclusion of <lightning.h>) */
struct jit_node;
struct jit_state;
typedef struct jit_state jit_state_t;
struct blockcache;
struct recompiler;
struct regcache;
struct opcode;
struct tinymm;
struct block {
jit_state_t *_jit;
struct lightrec_state *state;
struct opcode *opcode_list;
void (*function)(void);
u32 pc;
u32 hash;
#if ENABLE_THREADED_COMPILER
atomic_flag op_list_freed;
#endif
unsigned int code_size;
u16 flags;
u16 nb_ops;
const struct lightrec_mem_map *map;
struct block *next;
};
struct lightrec_branch {
struct jit_node *branch;
u32 target;
};
struct lightrec_branch_target {
struct jit_node *label;
u32 offset;
};
struct lightrec_state {
u32 native_reg_cache[34];
u32 next_pc;
u32 current_cycle;
u32 target_cycle;
u32 exit_flags;
struct block *dispatcher, *rw_wrapper, *rw_generic_wrapper,
*mfc_wrapper, *mtc_wrapper, *rfe_wrapper, *cp_wrapper,
*syscall_wrapper, *break_wrapper;
void *rw_func, *rw_generic_func, *mfc_func, *mtc_func, *rfe_func,
*cp_func, *syscall_func, *break_func;
struct jit_node *branches[512];
struct lightrec_branch local_branches[512];
struct lightrec_branch_target targets[512];
unsigned int nb_branches;
unsigned int nb_local_branches;
unsigned int nb_targets;
struct tinymm *tinymm;
struct blockcache *block_cache;
struct regcache *reg_cache;
struct recompiler *rec;
void (*eob_wrapper_func)(void);
void (*get_next_block)(void);
struct lightrec_ops ops;
unsigned int cycles;
unsigned int nb_maps;
const struct lightrec_mem_map *maps;
uintptr_t offset_ram, offset_bios, offset_scratch;
_Bool mirrors_mapped;
_Bool invalidate_from_dma_only;
void *code_lut[];
};
u32 lightrec_rw(struct lightrec_state *state, union code op,
u32 addr, u32 data, u16 *flags);
void lightrec_free_block(struct block *block);
void remove_from_code_lut(struct blockcache *cache, struct block *block);
static inline u32 kunseg(u32 addr)
{
if (unlikely(addr >= 0xa0000000))
return addr - 0xa0000000;
else
return addr &~ 0x80000000;
}
static inline u32 lut_offset(u32 pc)
{
if (pc & BIT(28))
return ((pc & (BIOS_SIZE - 1)) + RAM_SIZE) >> 2; // BIOS
else
return (pc & (RAM_SIZE - 1)) >> 2; // RAM
}
void lightrec_mtc(struct lightrec_state *state, union code op, u32 data);
u32 lightrec_mfc(struct lightrec_state *state, union code op);
union code lightrec_read_opcode(struct lightrec_state *state, u32 pc);
struct block * lightrec_get_block(struct lightrec_state *state, u32 pc);
int lightrec_compile_block(struct block *block);
#endif /* __LIGHTREC_PRIVATE_H__ */
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