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/*
* TranslationBlock internal declarations (target specific)
*
* Copyright (c) 2003 Fabrice Bellard
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef ACCEL_TCG_TB_INTERNAL_TARGET_H
#define ACCEL_TCG_TB_INTERNAL_TARGET_H
#include "exec/translation-block.h"
/*
* The true return address will often point to a host insn that is part of
* the next translated guest insn. Adjust the address backward to point to
* the middle of the call insn. Subtracting one would do the job except for
* several compressed mode architectures (arm, mips) which set the low bit
* to indicate the compressed mode; subtracting two works around that. It
* is also the case that there are no host isas that contain a call insn
* smaller than 4 bytes, so we don't worry about special-casing this.
*/
#define GETPC_ADJ 2
void tb_lock_page0(tb_page_addr_t);
#ifdef CONFIG_USER_ONLY
/*
* For user-only, page_protect sets the page read-only.
* Since most execution is already on read-only pages, and we'd need to
* account for other TBs on the same page, defer undoing any page protection
* until we receive the write fault.
*/
static inline void tb_lock_page1(tb_page_addr_t p0, tb_page_addr_t p1)
{
tb_lock_page0(p1);
}
static inline void tb_unlock_page1(tb_page_addr_t p0, tb_page_addr_t p1) { }
static inline void tb_unlock_pages(TranslationBlock *tb) { }
#else
void tb_lock_page1(tb_page_addr_t, tb_page_addr_t);
void tb_unlock_page1(tb_page_addr_t, tb_page_addr_t);
void tb_unlock_pages(TranslationBlock *);
#endif
#ifdef CONFIG_SOFTMMU
void tb_invalidate_phys_range_fast(CPUState *cpu, ram_addr_t ram_addr,
unsigned size, uintptr_t retaddr);
#endif /* CONFIG_SOFTMMU */
bool tb_invalidate_phys_page_unwind(CPUState *cpu, tb_page_addr_t addr,
uintptr_t pc);
#endif
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