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8905770b27
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in glib-compat. Note that this attribute must be placed before the function declaration (bringing a bit of consistency in qemu codebase usage). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
736 lines
27 KiB
C
736 lines
27 KiB
C
/*
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* internal execution defines for qemu
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EXEC_ALL_H
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#define EXEC_ALL_H
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#include "cpu.h"
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#ifdef CONFIG_TCG
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#include "exec/cpu_ldst.h"
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#endif
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/* allow to see translation results - the slowdown should be negligible, so we leave it */
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#define DEBUG_DISAS
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/* Page tracking code uses ram addresses in system mode, and virtual
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addresses in userspace mode. Define tb_page_addr_t to be an appropriate
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type. */
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#if defined(CONFIG_USER_ONLY)
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typedef abi_ulong tb_page_addr_t;
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#define TB_PAGE_ADDR_FMT TARGET_ABI_FMT_lx
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#else
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typedef ram_addr_t tb_page_addr_t;
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#define TB_PAGE_ADDR_FMT RAM_ADDR_FMT
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#endif
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void gen_intermediate_code(CPUState *cpu, TranslationBlock *tb, int max_insns);
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void restore_state_to_opc(CPUArchState *env, TranslationBlock *tb,
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target_ulong *data);
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/**
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* cpu_restore_state:
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* @cpu: the vCPU state is to be restore to
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* @searched_pc: the host PC the fault occurred at
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* @will_exit: true if the TB executed will be interrupted after some
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cpu adjustments. Required for maintaining the correct
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icount valus
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* @return: true if state was restored, false otherwise
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*
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* Attempt to restore the state for a fault occurring in translated
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* code. If the searched_pc is not in translated code no state is
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* restored and the function returns false.
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*/
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bool cpu_restore_state(CPUState *cpu, uintptr_t searched_pc, bool will_exit);
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G_NORETURN void cpu_loop_exit_noexc(CPUState *cpu);
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G_NORETURN void cpu_loop_exit(CPUState *cpu);
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G_NORETURN void cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc);
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G_NORETURN void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc);
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/**
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* cpu_loop_exit_requested:
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* @cpu: The CPU state to be tested
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*
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* Indicate if somebody asked for a return of the CPU to the main loop
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* (e.g., via cpu_exit() or cpu_interrupt()).
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*
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* This is helpful for architectures that support interruptible
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* instructions. After writing back all state to registers/memory, this
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* call can be used to check if it makes sense to return to the main loop
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* or to continue executing the interruptible instruction.
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*/
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static inline bool cpu_loop_exit_requested(CPUState *cpu)
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{
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return (int32_t)qatomic_read(&cpu_neg(cpu)->icount_decr.u32) < 0;
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}
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#if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
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/* cputlb.c */
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/**
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* tlb_init - initialize a CPU's TLB
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* @cpu: CPU whose TLB should be initialized
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*/
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void tlb_init(CPUState *cpu);
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/**
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* tlb_destroy - destroy a CPU's TLB
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* @cpu: CPU whose TLB should be destroyed
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*/
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void tlb_destroy(CPUState *cpu);
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/**
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* tlb_flush_page:
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* @cpu: CPU whose TLB should be flushed
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* @addr: virtual address of page to be flushed
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*
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* Flush one page from the TLB of the specified CPU, for all
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* MMU indexes.
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*/
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void tlb_flush_page(CPUState *cpu, target_ulong addr);
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/**
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* tlb_flush_page_all_cpus:
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* @cpu: src CPU of the flush
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* @addr: virtual address of page to be flushed
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*
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* Flush one page from the TLB of the specified CPU, for all
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* MMU indexes.
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*/
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void tlb_flush_page_all_cpus(CPUState *src, target_ulong addr);
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/**
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* tlb_flush_page_all_cpus_synced:
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* @cpu: src CPU of the flush
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* @addr: virtual address of page to be flushed
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*
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* Flush one page from the TLB of the specified CPU, for all MMU
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* indexes like tlb_flush_page_all_cpus except the source vCPUs work
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* is scheduled as safe work meaning all flushes will be complete once
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* the source vCPUs safe work is complete. This will depend on when
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* the guests translation ends the TB.
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*/
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void tlb_flush_page_all_cpus_synced(CPUState *src, target_ulong addr);
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/**
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* tlb_flush:
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* @cpu: CPU whose TLB should be flushed
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*
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* Flush the entire TLB for the specified CPU. Most CPU architectures
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* allow the implementation to drop entries from the TLB at any time
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* so this is generally safe. If more selective flushing is required
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* use one of the other functions for efficiency.
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*/
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void tlb_flush(CPUState *cpu);
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/**
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* tlb_flush_all_cpus:
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* @cpu: src CPU of the flush
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*/
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void tlb_flush_all_cpus(CPUState *src_cpu);
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/**
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* tlb_flush_all_cpus_synced:
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* @cpu: src CPU of the flush
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*
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* Like tlb_flush_all_cpus except this except the source vCPUs work is
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* scheduled as safe work meaning all flushes will be complete once
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* the source vCPUs safe work is complete. This will depend on when
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* the guests translation ends the TB.
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*/
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void tlb_flush_all_cpus_synced(CPUState *src_cpu);
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/**
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* tlb_flush_page_by_mmuidx:
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* @cpu: CPU whose TLB should be flushed
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* @addr: virtual address of page to be flushed
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush one page from the TLB of the specified CPU, for the specified
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* MMU indexes.
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*/
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void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr,
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uint16_t idxmap);
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/**
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* tlb_flush_page_by_mmuidx_all_cpus:
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* @cpu: Originating CPU of the flush
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* @addr: virtual address of page to be flushed
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush one page from the TLB of all CPUs, for the specified
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* MMU indexes.
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*/
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void tlb_flush_page_by_mmuidx_all_cpus(CPUState *cpu, target_ulong addr,
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uint16_t idxmap);
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/**
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* tlb_flush_page_by_mmuidx_all_cpus_synced:
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* @cpu: Originating CPU of the flush
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* @addr: virtual address of page to be flushed
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush one page from the TLB of all CPUs, for the specified MMU
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* indexes like tlb_flush_page_by_mmuidx_all_cpus except the source
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* vCPUs work is scheduled as safe work meaning all flushes will be
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* complete once the source vCPUs safe work is complete. This will
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* depend on when the guests translation ends the TB.
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*/
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void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, target_ulong addr,
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uint16_t idxmap);
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/**
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* tlb_flush_by_mmuidx:
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* @cpu: CPU whose TLB should be flushed
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* @wait: If true ensure synchronisation by exiting the cpu_loop
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush all entries from the TLB of the specified CPU, for the specified
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* MMU indexes.
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*/
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void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap);
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/**
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* tlb_flush_by_mmuidx_all_cpus:
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* @cpu: Originating CPU of the flush
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush all entries from all TLBs of all CPUs, for the specified
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* MMU indexes.
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*/
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void tlb_flush_by_mmuidx_all_cpus(CPUState *cpu, uint16_t idxmap);
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/**
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* tlb_flush_by_mmuidx_all_cpus_synced:
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* @cpu: Originating CPU of the flush
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* @idxmap: bitmap of MMU indexes to flush
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*
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* Flush all entries from all TLBs of all CPUs, for the specified
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* MMU indexes like tlb_flush_by_mmuidx_all_cpus except except the source
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* vCPUs work is scheduled as safe work meaning all flushes will be
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* complete once the source vCPUs safe work is complete. This will
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* depend on when the guests translation ends the TB.
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*/
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void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, uint16_t idxmap);
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/**
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* tlb_flush_page_bits_by_mmuidx
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* @cpu: CPU whose TLB should be flushed
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* @addr: virtual address of page to be flushed
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* @idxmap: bitmap of mmu indexes to flush
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* @bits: number of significant bits in address
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*
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* Similar to tlb_flush_page_mask, but with a bitmap of indexes.
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*/
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void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, target_ulong addr,
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uint16_t idxmap, unsigned bits);
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/* Similarly, with broadcast and syncing. */
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void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *cpu, target_ulong addr,
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uint16_t idxmap, unsigned bits);
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void tlb_flush_page_bits_by_mmuidx_all_cpus_synced
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(CPUState *cpu, target_ulong addr, uint16_t idxmap, unsigned bits);
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/**
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* tlb_flush_range_by_mmuidx
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* @cpu: CPU whose TLB should be flushed
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* @addr: virtual address of the start of the range to be flushed
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* @len: length of range to be flushed
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* @idxmap: bitmap of mmu indexes to flush
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* @bits: number of significant bits in address
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*
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* For each mmuidx in @idxmap, flush all pages within [@addr,@addr+@len),
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* comparing only the low @bits worth of each virtual page.
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*/
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void tlb_flush_range_by_mmuidx(CPUState *cpu, target_ulong addr,
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target_ulong len, uint16_t idxmap,
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unsigned bits);
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/* Similarly, with broadcast and syncing. */
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void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu, target_ulong addr,
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target_ulong len, uint16_t idxmap,
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unsigned bits);
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void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu,
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target_ulong addr,
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target_ulong len,
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uint16_t idxmap,
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unsigned bits);
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/**
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* tlb_set_page_with_attrs:
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* @cpu: CPU to add this TLB entry for
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* @vaddr: virtual address of page to add entry for
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* @paddr: physical address of the page
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* @attrs: memory transaction attributes
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* @prot: access permissions (PAGE_READ/PAGE_WRITE/PAGE_EXEC bits)
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* @mmu_idx: MMU index to insert TLB entry for
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* @size: size of the page in bytes
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*
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* Add an entry to this CPU's TLB (a mapping from virtual address
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* @vaddr to physical address @paddr) with the specified memory
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* transaction attributes. This is generally called by the target CPU
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* specific code after it has been called through the tlb_fill()
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* entry point and performed a successful page table walk to find
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* the physical address and attributes for the virtual address
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* which provoked the TLB miss.
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*
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* At most one entry for a given virtual address is permitted. Only a
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* single TARGET_PAGE_SIZE region is mapped; the supplied @size is only
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* used by tlb_flush_page.
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*/
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void tlb_set_page_with_attrs(CPUState *cpu, target_ulong vaddr,
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hwaddr paddr, MemTxAttrs attrs,
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int prot, int mmu_idx, target_ulong size);
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/* tlb_set_page:
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*
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* This function is equivalent to calling tlb_set_page_with_attrs()
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* with an @attrs argument of MEMTXATTRS_UNSPECIFIED. It's provided
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* as a convenience for CPUs which don't use memory transaction attributes.
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*/
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void tlb_set_page(CPUState *cpu, target_ulong vaddr,
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hwaddr paddr, int prot,
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int mmu_idx, target_ulong size);
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#else
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static inline void tlb_init(CPUState *cpu)
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{
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}
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static inline void tlb_destroy(CPUState *cpu)
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{
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}
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static inline void tlb_flush_page(CPUState *cpu, target_ulong addr)
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{
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}
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static inline void tlb_flush_page_all_cpus(CPUState *src, target_ulong addr)
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{
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}
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static inline void tlb_flush_page_all_cpus_synced(CPUState *src,
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target_ulong addr)
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{
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}
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static inline void tlb_flush(CPUState *cpu)
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{
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}
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static inline void tlb_flush_all_cpus(CPUState *src_cpu)
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{
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}
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static inline void tlb_flush_all_cpus_synced(CPUState *src_cpu)
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{
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}
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static inline void tlb_flush_page_by_mmuidx(CPUState *cpu,
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target_ulong addr, uint16_t idxmap)
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{
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}
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static inline void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap)
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{
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}
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static inline void tlb_flush_page_by_mmuidx_all_cpus(CPUState *cpu,
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target_ulong addr,
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uint16_t idxmap)
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{
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}
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static inline void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu,
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target_ulong addr,
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uint16_t idxmap)
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{
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}
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static inline void tlb_flush_by_mmuidx_all_cpus(CPUState *cpu, uint16_t idxmap)
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{
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}
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static inline void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu,
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uint16_t idxmap)
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{
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}
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static inline void tlb_flush_page_bits_by_mmuidx(CPUState *cpu,
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target_ulong addr,
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uint16_t idxmap,
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unsigned bits)
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{
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}
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static inline void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *cpu,
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target_ulong addr,
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uint16_t idxmap,
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unsigned bits)
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{
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}
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static inline void
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tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *cpu, target_ulong addr,
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uint16_t idxmap, unsigned bits)
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{
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}
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static inline void tlb_flush_range_by_mmuidx(CPUState *cpu, target_ulong addr,
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target_ulong len, uint16_t idxmap,
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unsigned bits)
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{
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}
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static inline void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu,
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target_ulong addr,
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target_ulong len,
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uint16_t idxmap,
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unsigned bits)
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{
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}
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static inline void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu,
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target_ulong addr,
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target_long len,
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uint16_t idxmap,
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unsigned bits)
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{
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}
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#endif
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/**
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* probe_access:
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* @env: CPUArchState
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* @addr: guest virtual address to look up
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* @size: size of the access
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* @access_type: read, write or execute permission
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* @mmu_idx: MMU index to use for lookup
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* @retaddr: return address for unwinding
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*
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* Look up the guest virtual address @addr. Raise an exception if the
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* page does not satisfy @access_type. Raise an exception if the
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* access (@addr, @size) hits a watchpoint. For writes, mark a clean
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* page as dirty.
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*
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* Finally, return the host address for a page that is backed by RAM,
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* or NULL if the page requires I/O.
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*/
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void *probe_access(CPUArchState *env, target_ulong addr, int size,
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MMUAccessType access_type, int mmu_idx, uintptr_t retaddr);
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static inline void *probe_write(CPUArchState *env, target_ulong addr, int size,
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int mmu_idx, uintptr_t retaddr)
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{
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return probe_access(env, addr, size, MMU_DATA_STORE, mmu_idx, retaddr);
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}
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static inline void *probe_read(CPUArchState *env, target_ulong addr, int size,
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int mmu_idx, uintptr_t retaddr)
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{
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return probe_access(env, addr, size, MMU_DATA_LOAD, mmu_idx, retaddr);
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}
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/**
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* probe_access_flags:
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* @env: CPUArchState
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* @addr: guest virtual address to look up
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* @access_type: read, write or execute permission
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* @mmu_idx: MMU index to use for lookup
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* @nonfault: suppress the fault
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* @phost: return value for host address
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* @retaddr: return address for unwinding
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*
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* Similar to probe_access, loosely returning the TLB_FLAGS_MASK for
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* the page, and storing the host address for RAM in @phost.
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*
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* If @nonfault is set, do not raise an exception but return TLB_INVALID_MASK.
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* Do not handle watchpoints, but include TLB_WATCHPOINT in the returned flags.
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* Do handle clean pages, so exclude TLB_NOTDIRY from the returned flags.
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* For simplicity, all "mmio-like" flags are folded to TLB_MMIO.
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*/
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int probe_access_flags(CPUArchState *env, target_ulong addr,
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MMUAccessType access_type, int mmu_idx,
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bool nonfault, void **phost, uintptr_t retaddr);
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#define CODE_GEN_ALIGN 16 /* must be >= of the size of a icache line */
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/* Estimated block size for TB allocation. */
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/* ??? The following is based on a 2015 survey of x86_64 host output.
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Better would seem to be some sort of dynamically sized TB array,
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adapting to the block sizes actually being produced. */
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#if defined(CONFIG_SOFTMMU)
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#define CODE_GEN_AVG_BLOCK_SIZE 400
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#else
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#define CODE_GEN_AVG_BLOCK_SIZE 150
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#endif
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/*
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* Translation Cache-related fields of a TB.
|
|
* This struct exists just for convenience; we keep track of TB's in a binary
|
|
* search tree, and the only fields needed to compare TB's in the tree are
|
|
* @ptr and @size.
|
|
* Note: the address of search data can be obtained by adding @size to @ptr.
|
|
*/
|
|
struct tb_tc {
|
|
const void *ptr; /* pointer to the translated code */
|
|
size_t size;
|
|
};
|
|
|
|
struct TranslationBlock {
|
|
target_ulong pc; /* simulated PC corresponding to this block (EIP + CS base) */
|
|
target_ulong cs_base; /* CS base for this block */
|
|
uint32_t flags; /* flags defining in which context the code was generated */
|
|
uint32_t cflags; /* compile flags */
|
|
|
|
/* Note that TCG_MAX_INSNS is 512; we validate this match elsewhere. */
|
|
#define CF_COUNT_MASK 0x000001ff
|
|
#define CF_NO_GOTO_TB 0x00000200 /* Do not chain with goto_tb */
|
|
#define CF_NO_GOTO_PTR 0x00000400 /* Do not chain with goto_ptr */
|
|
#define CF_SINGLE_STEP 0x00000800 /* gdbstub single-step in effect */
|
|
#define CF_LAST_IO 0x00008000 /* Last insn may be an IO access. */
|
|
#define CF_MEMI_ONLY 0x00010000 /* Only instrument memory ops */
|
|
#define CF_USE_ICOUNT 0x00020000
|
|
#define CF_INVALID 0x00040000 /* TB is stale. Set with @jmp_lock held */
|
|
#define CF_PARALLEL 0x00080000 /* Generate code for a parallel context */
|
|
#define CF_NOIRQ 0x00100000 /* Generate an uninterruptible TB */
|
|
#define CF_CLUSTER_MASK 0xff000000 /* Top 8 bits are cluster ID */
|
|
#define CF_CLUSTER_SHIFT 24
|
|
|
|
/* Per-vCPU dynamic tracing state used to generate this TB */
|
|
uint32_t trace_vcpu_dstate;
|
|
|
|
/*
|
|
* Above fields used for comparing
|
|
*/
|
|
|
|
/* size of target code for this block (1 <= size <= TARGET_PAGE_SIZE) */
|
|
uint16_t size;
|
|
uint16_t icount;
|
|
|
|
struct tb_tc tc;
|
|
|
|
/* first and second physical page containing code. The lower bit
|
|
of the pointer tells the index in page_next[].
|
|
The list is protected by the TB's page('s) lock(s) */
|
|
uintptr_t page_next[2];
|
|
tb_page_addr_t page_addr[2];
|
|
|
|
/* jmp_lock placed here to fill a 4-byte hole. Its documentation is below */
|
|
QemuSpin jmp_lock;
|
|
|
|
/* The following data are used to directly call another TB from
|
|
* the code of this one. This can be done either by emitting direct or
|
|
* indirect native jump instructions. These jumps are reset so that the TB
|
|
* just continues its execution. The TB can be linked to another one by
|
|
* setting one of the jump targets (or patching the jump instruction). Only
|
|
* two of such jumps are supported.
|
|
*/
|
|
uint16_t jmp_reset_offset[2]; /* offset of original jump target */
|
|
#define TB_JMP_RESET_OFFSET_INVALID 0xffff /* indicates no jump generated */
|
|
uintptr_t jmp_target_arg[2]; /* target address or offset */
|
|
|
|
/*
|
|
* Each TB has a NULL-terminated list (jmp_list_head) of incoming jumps.
|
|
* Each TB can have two outgoing jumps, and therefore can participate
|
|
* in two lists. The list entries are kept in jmp_list_next[2]. The least
|
|
* significant bit (LSB) of the pointers in these lists is used to encode
|
|
* which of the two list entries is to be used in the pointed TB.
|
|
*
|
|
* List traversals are protected by jmp_lock. The destination TB of each
|
|
* outgoing jump is kept in jmp_dest[] so that the appropriate jmp_lock
|
|
* can be acquired from any origin TB.
|
|
*
|
|
* jmp_dest[] are tagged pointers as well. The LSB is set when the TB is
|
|
* being invalidated, so that no further outgoing jumps from it can be set.
|
|
*
|
|
* jmp_lock also protects the CF_INVALID cflag; a jump must not be chained
|
|
* to a destination TB that has CF_INVALID set.
|
|
*/
|
|
uintptr_t jmp_list_head;
|
|
uintptr_t jmp_list_next[2];
|
|
uintptr_t jmp_dest[2];
|
|
};
|
|
|
|
/* Hide the qatomic_read to make code a little easier on the eyes */
|
|
static inline uint32_t tb_cflags(const TranslationBlock *tb)
|
|
{
|
|
return qatomic_read(&tb->cflags);
|
|
}
|
|
|
|
/* current cflags for hashing/comparison */
|
|
uint32_t curr_cflags(CPUState *cpu);
|
|
|
|
/* TranslationBlock invalidate API */
|
|
#if defined(CONFIG_USER_ONLY)
|
|
void tb_invalidate_phys_addr(target_ulong addr);
|
|
void tb_invalidate_phys_range(target_ulong start, target_ulong end);
|
|
#else
|
|
void tb_invalidate_phys_addr(AddressSpace *as, hwaddr addr, MemTxAttrs attrs);
|
|
#endif
|
|
void tb_flush(CPUState *cpu);
|
|
void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr);
|
|
TranslationBlock *tb_htable_lookup(CPUState *cpu, target_ulong pc,
|
|
target_ulong cs_base, uint32_t flags,
|
|
uint32_t cflags);
|
|
void tb_set_jmp_target(TranslationBlock *tb, int n, uintptr_t addr);
|
|
|
|
/* GETPC is the true target of the return instruction that we'll execute. */
|
|
#if defined(CONFIG_TCG_INTERPRETER)
|
|
extern __thread uintptr_t tci_tb_ptr;
|
|
# define GETPC() tci_tb_ptr
|
|
#else
|
|
# define GETPC() \
|
|
((uintptr_t)__builtin_extract_return_addr(__builtin_return_address(0)))
|
|
#endif
|
|
|
|
/* 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
|
|
|
|
#if !defined(CONFIG_USER_ONLY) && defined(CONFIG_DEBUG_TCG)
|
|
void assert_no_pages_locked(void);
|
|
#else
|
|
static inline void assert_no_pages_locked(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
|
|
/**
|
|
* iotlb_to_section:
|
|
* @cpu: CPU performing the access
|
|
* @index: TCG CPU IOTLB entry
|
|
*
|
|
* Given a TCG CPU IOTLB entry, return the MemoryRegionSection that
|
|
* it refers to. @index will have been initially created and returned
|
|
* by memory_region_section_get_iotlb().
|
|
*/
|
|
struct MemoryRegionSection *iotlb_to_section(CPUState *cpu,
|
|
hwaddr index, MemTxAttrs attrs);
|
|
#endif
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
void mmap_lock(void);
|
|
void mmap_unlock(void);
|
|
bool have_mmap_lock(void);
|
|
|
|
/**
|
|
* get_page_addr_code() - user-mode version
|
|
* @env: CPUArchState
|
|
* @addr: guest virtual address of guest code
|
|
*
|
|
* Returns @addr.
|
|
*/
|
|
static inline tb_page_addr_t get_page_addr_code(CPUArchState *env,
|
|
target_ulong addr)
|
|
{
|
|
return addr;
|
|
}
|
|
|
|
/**
|
|
* get_page_addr_code_hostp() - user-mode version
|
|
* @env: CPUArchState
|
|
* @addr: guest virtual address of guest code
|
|
*
|
|
* Returns @addr.
|
|
*
|
|
* If @hostp is non-NULL, sets *@hostp to the host address where @addr's content
|
|
* is kept.
|
|
*/
|
|
static inline tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env,
|
|
target_ulong addr,
|
|
void **hostp)
|
|
{
|
|
if (hostp) {
|
|
*hostp = g2h_untagged(addr);
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
/**
|
|
* adjust_signal_pc:
|
|
* @pc: raw pc from the host signal ucontext_t.
|
|
* @is_write: host memory operation was write, or read-modify-write.
|
|
*
|
|
* Alter @pc as required for unwinding. Return the type of the
|
|
* guest memory access -- host reads may be for guest execution.
|
|
*/
|
|
MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write);
|
|
|
|
/**
|
|
* handle_sigsegv_accerr_write:
|
|
* @cpu: the cpu context
|
|
* @old_set: the sigset_t from the signal ucontext_t
|
|
* @host_pc: the host pc, adjusted for the signal
|
|
* @host_addr: the host address of the fault
|
|
*
|
|
* Return true if the write fault has been handled, and should be re-tried.
|
|
*/
|
|
bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set,
|
|
uintptr_t host_pc, abi_ptr guest_addr);
|
|
|
|
/**
|
|
* cpu_loop_exit_sigsegv:
|
|
* @cpu: the cpu context
|
|
* @addr: the guest address of the fault
|
|
* @access_type: access was read/write/execute
|
|
* @maperr: true for invalid page, false for permission fault
|
|
* @ra: host pc for unwinding
|
|
*
|
|
* Use the TCGCPUOps hook to record cpu state, do guest operating system
|
|
* specific things to raise SIGSEGV, and jump to the main cpu loop.
|
|
*/
|
|
G_NORETURN void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr,
|
|
MMUAccessType access_type,
|
|
bool maperr, uintptr_t ra);
|
|
|
|
/**
|
|
* cpu_loop_exit_sigbus:
|
|
* @cpu: the cpu context
|
|
* @addr: the guest address of the alignment fault
|
|
* @access_type: access was read/write/execute
|
|
* @ra: host pc for unwinding
|
|
*
|
|
* Use the TCGCPUOps hook to record cpu state, do guest operating system
|
|
* specific things to raise SIGBUS, and jump to the main cpu loop.
|
|
*/
|
|
G_NORETURN void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
|
|
MMUAccessType access_type,
|
|
uintptr_t ra);
|
|
|
|
#else
|
|
static inline void mmap_lock(void) {}
|
|
static inline void mmap_unlock(void) {}
|
|
|
|
/**
|
|
* get_page_addr_code() - full-system version
|
|
* @env: CPUArchState
|
|
* @addr: guest virtual address of guest code
|
|
*
|
|
* If we cannot translate and execute from the entire RAM page, or if
|
|
* the region is not backed by RAM, returns -1. Otherwise, returns the
|
|
* ram_addr_t corresponding to the guest code at @addr.
|
|
*
|
|
* Note: this function can trigger an exception.
|
|
*/
|
|
tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr);
|
|
|
|
/**
|
|
* get_page_addr_code_hostp() - full-system version
|
|
* @env: CPUArchState
|
|
* @addr: guest virtual address of guest code
|
|
*
|
|
* See get_page_addr_code() (full-system version) for documentation on the
|
|
* return value.
|
|
*
|
|
* Sets *@hostp (when @hostp is non-NULL) as follows.
|
|
* If the return value is -1, sets *@hostp to NULL. Otherwise, sets *@hostp
|
|
* to the host address where @addr's content is kept.
|
|
*
|
|
* Note: this function can trigger an exception.
|
|
*/
|
|
tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env, target_ulong addr,
|
|
void **hostp);
|
|
|
|
void tlb_reset_dirty(CPUState *cpu, ram_addr_t start1, ram_addr_t length);
|
|
void tlb_set_dirty(CPUState *cpu, target_ulong vaddr);
|
|
|
|
MemoryRegionSection *
|
|
address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr,
|
|
hwaddr *xlat, hwaddr *plen,
|
|
MemTxAttrs attrs, int *prot);
|
|
hwaddr memory_region_section_get_iotlb(CPUState *cpu,
|
|
MemoryRegionSection *section);
|
|
#endif
|
|
|
|
#endif
|