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Diffstat (limited to 'include/exec/exec-all.h')
-rw-r--r-- | include/exec/exec-all.h | 599 |
1 files changed, 0 insertions, 599 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h deleted file mode 100644 index b6b46ad..0000000 --- a/include/exec/exec-all.h +++ /dev/null @@ -1,599 +0,0 @@ -/* - * internal execution defines for qemu - * - * Copyright (c) 2003 Fabrice Bellard - * - * 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. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef EXEC_ALL_H -#define EXEC_ALL_H - -#include "cpu.h" -#if defined(CONFIG_USER_ONLY) -#include "exec/abi_ptr.h" -#include "exec/cpu_ldst.h" -#endif -#include "exec/mmu-access-type.h" -#include "exec/translation-block.h" -#include "qemu/clang-tsa.h" - -/** - * cpu_loop_exit_requested: - * @cpu: The CPU state to be tested - * - * Indicate if somebody asked for a return of the CPU to the main loop - * (e.g., via cpu_exit() or cpu_interrupt()). - * - * This is helpful for architectures that support interruptible - * instructions. After writing back all state to registers/memory, this - * call can be used to check if it makes sense to return to the main loop - * or to continue executing the interruptible instruction. - */ -static inline bool cpu_loop_exit_requested(CPUState *cpu) -{ - return (int32_t)qatomic_read(&cpu->neg.icount_decr.u32) < 0; -} - -#if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG) -/* cputlb.c */ -/** - * tlb_init - initialize a CPU's TLB - * @cpu: CPU whose TLB should be initialized - */ -void tlb_init(CPUState *cpu); -/** - * tlb_destroy - destroy a CPU's TLB - * @cpu: CPU whose TLB should be destroyed - */ -void tlb_destroy(CPUState *cpu); -/** - * tlb_flush_page: - * @cpu: CPU whose TLB should be flushed - * @addr: virtual address of page to be flushed - * - * Flush one page from the TLB of the specified CPU, for all - * MMU indexes. - */ -void tlb_flush_page(CPUState *cpu, vaddr addr); -/** - * tlb_flush_page_all_cpus_synced: - * @cpu: src CPU of the flush - * @addr: virtual address of page to be flushed - * - * Flush one page from the TLB of all CPUs, for all - * MMU indexes. - * - * When this function returns, no CPUs will subsequently perform - * translations using the flushed TLBs. - */ -void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr); -/** - * tlb_flush: - * @cpu: CPU whose TLB should be flushed - * - * Flush the entire TLB for the specified CPU. Most CPU architectures - * allow the implementation to drop entries from the TLB at any time - * so this is generally safe. If more selective flushing is required - * use one of the other functions for efficiency. - */ -void tlb_flush(CPUState *cpu); -/** - * tlb_flush_all_cpus_synced: - * @cpu: src CPU of the flush - * - * Flush the entire TLB for all CPUs, for all MMU indexes. - * - * When this function returns, no CPUs will subsequently perform - * translations using the flushed TLBs. - */ -void tlb_flush_all_cpus_synced(CPUState *src_cpu); -/** - * tlb_flush_page_by_mmuidx: - * @cpu: CPU whose TLB should be flushed - * @addr: virtual address of page to be flushed - * @idxmap: bitmap of MMU indexes to flush - * - * Flush one page from the TLB of the specified CPU, for the specified - * MMU indexes. - */ -void tlb_flush_page_by_mmuidx(CPUState *cpu, vaddr addr, - uint16_t idxmap); -/** - * tlb_flush_page_by_mmuidx_all_cpus_synced: - * @cpu: Originating CPU of the flush - * @addr: virtual address of page to be flushed - * @idxmap: bitmap of MMU indexes to flush - * - * Flush one page from the TLB of all CPUs, for the specified - * MMU indexes. - * - * When this function returns, no CPUs will subsequently perform - * translations using the flushed TLBs. - */ -void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, - uint16_t idxmap); -/** - * tlb_flush_by_mmuidx: - * @cpu: CPU whose TLB should be flushed - * @wait: If true ensure synchronisation by exiting the cpu_loop - * @idxmap: bitmap of MMU indexes to flush - * - * Flush all entries from the TLB of the specified CPU, for the specified - * MMU indexes. - */ -void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap); -/** - * tlb_flush_by_mmuidx_all_cpus_synced: - * @cpu: Originating CPU of the flush - * @idxmap: bitmap of MMU indexes to flush - * - * Flush all entries from the TLB of all CPUs, for the specified - * MMU indexes. - * - * When this function returns, no CPUs will subsequently perform - * translations using the flushed TLBs. - */ -void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, uint16_t idxmap); - -/** - * tlb_flush_page_bits_by_mmuidx - * @cpu: CPU whose TLB should be flushed - * @addr: virtual address of page to be flushed - * @idxmap: bitmap of mmu indexes to flush - * @bits: number of significant bits in address - * - * Similar to tlb_flush_page_mask, but with a bitmap of indexes. - */ -void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, vaddr addr, - uint16_t idxmap, unsigned bits); - -/* Similarly, with broadcast and syncing. */ -void tlb_flush_page_bits_by_mmuidx_all_cpus_synced - (CPUState *cpu, vaddr addr, uint16_t idxmap, unsigned bits); - -/** - * tlb_flush_range_by_mmuidx - * @cpu: CPU whose TLB should be flushed - * @addr: virtual address of the start of the range to be flushed - * @len: length of range to be flushed - * @idxmap: bitmap of mmu indexes to flush - * @bits: number of significant bits in address - * - * For each mmuidx in @idxmap, flush all pages within [@addr,@addr+@len), - * comparing only the low @bits worth of each virtual page. - */ -void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, - vaddr len, uint16_t idxmap, - unsigned bits); - -/* Similarly, with broadcast and syncing. */ -void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, - vaddr addr, - vaddr len, - uint16_t idxmap, - unsigned bits); - -/** - * tlb_set_page_full: - * @cpu: CPU context - * @mmu_idx: mmu index of the tlb to modify - * @addr: virtual address of the entry to add - * @full: the details of the tlb entry - * - * Add an entry to @cpu tlb index @mmu_idx. All of the fields of - * @full must be filled, except for xlat_section, and constitute - * the complete description of the translated page. - * - * This is generally called by the target tlb_fill function after - * having performed a successful page table walk to find the physical - * address and attributes for the translation. - * - * At most one entry for a given virtual address is permitted. Only a - * single TARGET_PAGE_SIZE region is mapped; @full->lg_page_size is only - * used by tlb_flush_page. - */ -void tlb_set_page_full(CPUState *cpu, int mmu_idx, vaddr addr, - CPUTLBEntryFull *full); - -/** - * tlb_set_page_with_attrs: - * @cpu: CPU to add this TLB entry for - * @addr: virtual address of page to add entry for - * @paddr: physical address of the page - * @attrs: memory transaction attributes - * @prot: access permissions (PAGE_READ/PAGE_WRITE/PAGE_EXEC bits) - * @mmu_idx: MMU index to insert TLB entry for - * @size: size of the page in bytes - * - * Add an entry to this CPU's TLB (a mapping from virtual address - * @addr to physical address @paddr) with the specified memory - * transaction attributes. This is generally called by the target CPU - * specific code after it has been called through the tlb_fill() - * entry point and performed a successful page table walk to find - * the physical address and attributes for the virtual address - * which provoked the TLB miss. - * - * At most one entry for a given virtual address is permitted. Only a - * single TARGET_PAGE_SIZE region is mapped; the supplied @size is only - * used by tlb_flush_page. - */ -void tlb_set_page_with_attrs(CPUState *cpu, vaddr addr, - hwaddr paddr, MemTxAttrs attrs, - int prot, int mmu_idx, vaddr size); -/* tlb_set_page: - * - * This function is equivalent to calling tlb_set_page_with_attrs() - * with an @attrs argument of MEMTXATTRS_UNSPECIFIED. It's provided - * as a convenience for CPUs which don't use memory transaction attributes. - */ -void tlb_set_page(CPUState *cpu, vaddr addr, - hwaddr paddr, int prot, - int mmu_idx, vaddr size); -#else -static inline void tlb_init(CPUState *cpu) -{ -} -static inline void tlb_destroy(CPUState *cpu) -{ -} -static inline void tlb_flush_page(CPUState *cpu, vaddr addr) -{ -} -static inline void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr) -{ -} -static inline void tlb_flush(CPUState *cpu) -{ -} -static inline void tlb_flush_all_cpus_synced(CPUState *src_cpu) -{ -} -static inline void tlb_flush_page_by_mmuidx(CPUState *cpu, - vaddr addr, uint16_t idxmap) -{ -} - -static inline void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap) -{ -} -static inline void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, - vaddr addr, - uint16_t idxmap) -{ -} -static inline void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, - uint16_t idxmap) -{ -} -static inline void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, - vaddr addr, - uint16_t idxmap, - unsigned bits) -{ -} -static inline void -tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, - uint16_t idxmap, unsigned bits) -{ -} -static inline void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, - vaddr len, uint16_t idxmap, - unsigned bits) -{ -} -static inline void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, - vaddr addr, - vaddr len, - uint16_t idxmap, - unsigned bits) -{ -} -#endif -/** - * probe_access: - * @env: CPUArchState - * @addr: guest virtual address to look up - * @size: size of the access - * @access_type: read, write or execute permission - * @mmu_idx: MMU index to use for lookup - * @retaddr: return address for unwinding - * - * Look up the guest virtual address @addr. Raise an exception if the - * page does not satisfy @access_type. Raise an exception if the - * access (@addr, @size) hits a watchpoint. For writes, mark a clean - * page as dirty. - * - * Finally, return the host address for a page that is backed by RAM, - * or NULL if the page requires I/O. - */ -void *probe_access(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, uintptr_t retaddr); - -static inline void *probe_write(CPUArchState *env, vaddr addr, int size, - int mmu_idx, uintptr_t retaddr) -{ - return probe_access(env, addr, size, MMU_DATA_STORE, mmu_idx, retaddr); -} - -static inline void *probe_read(CPUArchState *env, vaddr addr, int size, - int mmu_idx, uintptr_t retaddr) -{ - return probe_access(env, addr, size, MMU_DATA_LOAD, mmu_idx, retaddr); -} - -/** - * probe_access_flags: - * @env: CPUArchState - * @addr: guest virtual address to look up - * @size: size of the access - * @access_type: read, write or execute permission - * @mmu_idx: MMU index to use for lookup - * @nonfault: suppress the fault - * @phost: return value for host address - * @retaddr: return address for unwinding - * - * Similar to probe_access, loosely returning the TLB_FLAGS_MASK for - * the page, and storing the host address for RAM in @phost. - * - * If @nonfault is set, do not raise an exception but return TLB_INVALID_MASK. - * Do not handle watchpoints, but include TLB_WATCHPOINT in the returned flags. - * Do handle clean pages, so exclude TLB_NOTDIRY from the returned flags. - * For simplicity, all "mmio-like" flags are folded to TLB_MMIO. - */ -int probe_access_flags(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool nonfault, void **phost, uintptr_t retaddr); - -#ifndef CONFIG_USER_ONLY -/** - * probe_access_full: - * Like probe_access_flags, except also return into @pfull. - * - * The CPUTLBEntryFull structure returned via @pfull is transient - * and must be consumed or copied immediately, before any further - * access or changes to TLB @mmu_idx. - */ -int probe_access_full(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool nonfault, void **phost, - CPUTLBEntryFull **pfull, uintptr_t retaddr); - -/** - * probe_access_mmu() - Like probe_access_full except cannot fault and - * doesn't trigger instrumentation. - * - * @env: CPUArchState - * @vaddr: virtual address to probe - * @size: size of the probe - * @access_type: read, write or execute permission - * @mmu_idx: softmmu index - * @phost: ptr to return value host address or NULL - * @pfull: ptr to return value CPUTLBEntryFull structure or NULL - * - * The CPUTLBEntryFull structure returned via @pfull is transient - * and must be consumed or copied immediately, before any further - * access or changes to TLB @mmu_idx. - * - * Returns: TLB flags as per probe_access_flags() - */ -int probe_access_full_mmu(CPUArchState *env, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - void **phost, CPUTLBEntryFull **pfull); - -#endif - -static inline tb_page_addr_t tb_page_addr0(const TranslationBlock *tb) -{ -#ifdef CONFIG_USER_ONLY - return tb->itree.start; -#else - return tb->page_addr[0]; -#endif -} - -static inline tb_page_addr_t tb_page_addr1(const TranslationBlock *tb) -{ -#ifdef CONFIG_USER_ONLY - tb_page_addr_t next = tb->itree.last & TARGET_PAGE_MASK; - return next == (tb->itree.start & TARGET_PAGE_MASK) ? -1 : next; -#else - return tb->page_addr[1]; -#endif -} - -static inline void tb_set_page_addr0(TranslationBlock *tb, - tb_page_addr_t addr) -{ -#ifdef CONFIG_USER_ONLY - tb->itree.start = addr; - /* - * To begin, we record an interval of one byte. When the translation - * loop encounters a second page, the interval will be extended to - * include the first byte of the second page, which is sufficient to - * allow tb_page_addr1() above to work properly. The final corrected - * interval will be set by tb_page_add() from tb->size before the - * node is added to the interval tree. - */ - tb->itree.last = addr; -#else - tb->page_addr[0] = addr; -#endif -} - -static inline void tb_set_page_addr1(TranslationBlock *tb, - tb_page_addr_t addr) -{ -#ifdef CONFIG_USER_ONLY - /* Extend the interval to the first byte of the second page. See above. */ - tb->itree.last = addr; -#else - tb->page_addr[1] = addr; -#endif -} - -/* TranslationBlock invalidate API */ -void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr); -void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t last); -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) - -/** - * 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 - -/** - * get_page_addr_code_hostp() - * @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, vaddr addr, - void **hostp); - -/** - * get_page_addr_code() - * @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. - */ -static inline tb_page_addr_t get_page_addr_code(CPUArchState *env, - vaddr addr) -{ - return get_page_addr_code_hostp(env, addr, NULL); -} - -#if defined(CONFIG_USER_ONLY) -void TSA_NO_TSA mmap_lock(void); -void TSA_NO_TSA mmap_unlock(void); -bool have_mmap_lock(void); - -static inline void mmap_unlock_guard(void *unused) -{ - mmap_unlock(); -} - -#define WITH_MMAP_LOCK_GUARD() \ - for (int _mmap_lock_iter __attribute__((cleanup(mmap_unlock_guard))) \ - = (mmap_lock(), 0); _mmap_lock_iter == 0; _mmap_lock_iter = 1) - -/** - * 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) {} -#define WITH_MMAP_LOCK_GUARD() - -void tlb_reset_dirty(CPUState *cpu, ram_addr_t start1, ram_addr_t length); -void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t length); - -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 |