+/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
- * Copyright (C) 2014 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.
+ * Copyright (C) 2014-2021 Paul Cercueil <paul@crapouillou.net>
*/
#ifndef __REGCACHE_H__
#define __REGCACHE_H__
+#include "lightning-wrapper.h"
+
+#if defined(__sh__)
+# define NUM_REGS JIT_V_NUM
+# define LIGHTREC_REG_STATE _GBR
+#else
+# define NUM_REGS (JIT_V_NUM - 1)
+# define LIGHTREC_REG_STATE (JIT_V(JIT_V_NUM - 1))
+#endif
+
+#if defined(__powerpc__)
+# define NUM_TEMPS JIT_R_NUM
+/* JIT_R0 is callee-saved on PowerPC, we have to use something else */
+# define LIGHTREC_REG_CYCLE _R10
+# define FIRST_TEMP 0
+#else
+# define NUM_TEMPS (JIT_R_NUM - 1)
+# define LIGHTREC_REG_CYCLE JIT_R0
+# define FIRST_TEMP 1
+#endif
+
#include "lightrec-private.h"
-#define NUM_REGS (JIT_V_NUM - 2)
-#define NUM_TEMPS (JIT_R_NUM)
-#define LIGHTREC_REG_STATE (JIT_V(JIT_V_NUM - 1))
-#define LIGHTREC_REG_CYCLE (JIT_V(JIT_V_NUM - 2))
+#define FIRST_REG 0
-#define REG_LO 32
-#define REG_HI 33
+/* Flags for lightrec_alloc_reg_in / lightrec_alloc_reg_out. */
+#define REG_EXT BIT(0) /* register is sign-extended */
+#define REG_ZEXT BIT(1) /* register is zero-extended */
struct register_value {
_Bool known;
u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit);
-u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit, u8 reg);
-u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit, u8 reg);
-u8 lightrec_alloc_reg_out_ext(struct regcache *cache,
- jit_state_t *_jit, u8 reg);
-u8 lightrec_alloc_reg_in_ext(struct regcache *cache, jit_state_t *_jit, u8 reg);
+u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit,
+ u16 reg, u8 flags);
+u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit,
+ u16 reg, u8 flags);
+
+void lightrec_load_imm(struct regcache *cache,
+ jit_state_t *_jit, u8 jit_reg, u32 pc, u32 imm);
+void lightrec_load_next_pc(struct regcache *cache, jit_state_t *_jit, u8 reg);
+void lightrec_load_next_pc_imm(struct regcache *cache,
+ jit_state_t *_jit, u32 pc, u32 imm);
+
+s8 lightrec_get_reg_with_value(struct regcache *cache, intptr_t value);
+void lightrec_temp_set_value(struct regcache *cache, u8 jit_reg, intptr_t value);
-u8 lightrec_request_reg_in(struct regcache *cache, jit_state_t *_jit,
- u8 reg, u8 jit_reg);
+u8 lightrec_get_reg_in_flags(struct regcache *cache, u8 jit_reg);
+void lightrec_set_reg_out_flags(struct regcache *cache, u8 jit_reg, u8 flags);
void lightrec_regcache_reset(struct regcache *cache);
+void lightrec_preload_pc(struct regcache *cache);
-void lightrec_lock_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_free_reg(struct regcache *cache, u8 jit_reg);
void lightrec_free_regs(struct regcache *cache);
void lightrec_clean_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_clean_regs(struct regcache *cache, jit_state_t *_jit);
void lightrec_unload_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
void lightrec_storeback_regs(struct regcache *cache, jit_state_t *_jit);
+_Bool lightrec_has_dirty_regs(struct regcache *cache);
+_Bool lightrec_reg_is_loaded(struct regcache *cache, u16 reg);
void lightrec_clean_reg_if_loaded(struct regcache *cache, jit_state_t *_jit,
- u8 reg, _Bool unload);
+ u16 reg, _Bool unload);
+void lightrec_discard_reg_if_loaded(struct regcache *cache, u16 reg);
u8 lightrec_alloc_reg_in_address(struct regcache *cache,
- jit_state_t *_jit, u8 reg, s16 offset);
+ jit_state_t *_jit, u16 reg, s16 offset);
struct native_register * lightrec_regcache_enter_branch(struct regcache *cache);
void lightrec_regcache_leave_branch(struct regcache *cache,
struct regcache * lightrec_regcache_init(struct lightrec_state *state);
void lightrec_free_regcache(struct regcache *cache);
-const char * lightrec_reg_name(u8 reg);
+__cnst const char * lightrec_reg_name(u8 reg);
void lightrec_regcache_mark_live(struct regcache *cache, jit_state_t *_jit);