mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2025-01-11 19:25:28 +00:00
1a880ef99b
Use inline functions rather than macros for cpu_ld/st accessors for the *-user configurations, as we already do for softmmu. This has a two advantages: * we can actually typecheck our arguments * we don't need to leak the _raw macros everywhere Since the _kernel functions were only used by target-i386/seg_helper.c, put the definitions for them in that file too. (It already has the similar template include code to define them for the softmmu case, so it makes sense to have it deal with defining them for user-only.) Backports commit 9220fe54c679d145232a28df6255e166ebf91bab from qemu
472 lines
11 KiB
C
472 lines
11 KiB
C
/*
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* Software MMU support
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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 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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*/
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/*
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* Generate inline load/store functions for all MMU modes (typically
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* at least _user and _kernel) as well as _data versions, for all data
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* sizes.
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*
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* Used by target op helpers.
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*
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* MMU mode suffixes are defined in target cpu.h.
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*/
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#ifndef CPU_LDST_H
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#define CPU_LDST_H
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#if defined(CONFIG_USER_ONLY)
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/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
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#define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + GUEST_BASE))
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#if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS
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#define h2g_valid(x) 1
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#else
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#define h2g_valid(x) ({ \
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unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
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(__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \
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(!RESERVED_VA || (__guest < RESERVED_VA)); \
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})
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#endif
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#define h2g_nocheck(x) ({ \
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unsigned long __ret = (unsigned long)(x) - GUEST_BASE; \
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(abi_ulong)__ret; \
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})
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#define h2g(x) ({ \
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/* Check if given address fits target address space */ \
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assert(h2g_valid(x)); \
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h2g_nocheck(x); \
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})
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#define saddr(x) g2h(x)
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#define laddr(x) g2h(x)
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#else /* !CONFIG_USER_ONLY */
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/* NOTE: we use double casts if pointers and target_ulong have
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different sizes */
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#define saddr(x) (uint8_t *)(intptr_t)(x)
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#define laddr(x) (uint8_t *)(intptr_t)(x)
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#endif
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#define ldub_raw(p) ldub_p(laddr((p)))
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#define ldsb_raw(p) ldsb_p(laddr((p)))
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#define lduw_raw(p) lduw_p(laddr((p)))
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#define ldsw_raw(p) ldsw_p(laddr((p)))
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#define ldl_raw(p) ldl_p(laddr((p)))
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#define ldq_raw(p) ldq_p(laddr((p)))
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#define ldfl_raw(p) ldfl_p(laddr((p)))
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#define ldfq_raw(p) ldfq_p(laddr((p)))
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#define stb_raw(p, v) stb_p(saddr((p)), v)
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#define stw_raw(p, v) stw_p(saddr((p)), v)
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#define stl_raw(p, v) stl_p(saddr((p)), v)
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#define stq_raw(p, v) stq_p(saddr((p)), v)
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#define stfl_raw(p, v) stfl_p(saddr((p)), v)
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#define stfq_raw(p, v) stfq_p(saddr((p)), v)
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#if defined(CONFIG_USER_ONLY)
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/* In user-only mode we provide only the _code and _data accessors. */
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#define MEMSUFFIX _data
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_useronly_template.h"
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#undef MEMSUFFIX
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#define MEMSUFFIX _code
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#define CODE_ACCESS
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_useronly_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_useronly_template.h"
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#undef MEMSUFFIX
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#undef CODE_ACCESS
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#else
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/* XXX: find something cleaner.
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* Furthermore, this is false for 64 bits targets
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*/
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#define ldul_user ldl_user
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#define ldul_kernel ldl_kernel
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#define ldul_hypv ldl_hypv
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#define ldul_executive ldl_executive
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#define ldul_supervisor ldl_supervisor
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/* The memory helpers for tcg-generated code need tcg_target_long etc. */
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#include "tcg.h"
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static inline target_ulong tlb_addr_write(const CPUTLBEntry *entry)
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{
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#if TCG_OVERSIZED_GUEST
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return entry->addr_write;
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#else
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return atomic_read(&entry->addr_write);
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#endif
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}
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/* Find the TLB index corresponding to the mmu_idx + address pair. */
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static inline uintptr_t tlb_index(CPUArchState *env, uintptr_t mmu_idx,
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target_ulong addr)
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{
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return (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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}
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/* Find the TLB entry corresponding to the mmu_idx + address pair. */
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static inline CPUTLBEntry *tlb_entry(CPUArchState *env, uintptr_t mmu_idx,
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target_ulong addr)
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{
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return &env->tlb_table[mmu_idx][tlb_index(env, mmu_idx, addr)];
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}
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#define CPU_MMU_INDEX 0
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#define MEMSUFFIX MMU_MODE0_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#define CPU_MMU_INDEX 1
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#define MEMSUFFIX MMU_MODE1_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#if (NB_MMU_MODES >= 3)
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#define CPU_MMU_INDEX 2
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#define MEMSUFFIX MMU_MODE2_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 3) */
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#if (NB_MMU_MODES >= 4)
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#define CPU_MMU_INDEX 3
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#define MEMSUFFIX MMU_MODE3_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 4) */
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#if (NB_MMU_MODES >= 5)
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#define CPU_MMU_INDEX 4
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#define MEMSUFFIX MMU_MODE4_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 5) */
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#if (NB_MMU_MODES >= 6)
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#define CPU_MMU_INDEX 5
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#define MEMSUFFIX MMU_MODE5_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 6) */
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#if (NB_MMU_MODES >= 7) && defined(MMU_MODE6_SUFFIX)
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#define CPU_MMU_INDEX 6
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#define MEMSUFFIX MMU_MODE6_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 7) */
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#if (NB_MMU_MODES >= 8) && defined(MMU_MODE7_SUFFIX)
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#define CPU_MMU_INDEX 7
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#define MEMSUFFIX MMU_MODE7_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 8) */
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#if (NB_MMU_MODES >= 9) && defined(MMU_MODE8_SUFFIX)
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#define CPU_MMU_INDEX 8
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#define MEMSUFFIX MMU_MODE8_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 9) */
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#if (NB_MMU_MODES >= 10) && defined(MMU_MODE9_SUFFIX)
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#define CPU_MMU_INDEX 9
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#define MEMSUFFIX MMU_MODE9_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 10) */
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#if (NB_MMU_MODES >= 11) && defined(MMU_MODE10_SUFFIX)
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#define CPU_MMU_INDEX 10
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#define MEMSUFFIX MMU_MODE10_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 11) */
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#if (NB_MMU_MODES >= 12) && defined(MMU_MODE11_SUFFIX)
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#define CPU_MMU_INDEX 11
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#define MEMSUFFIX MMU_MODE11_SUFFIX
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#endif /* (NB_MMU_MODES >= 12) */
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#if (NB_MMU_MODES > 12)
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#error "NB_MMU_MODES > 12 is not supported for now"
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#endif /* (NB_MMU_MODES > 12) */
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/* these access are slower, they must be as rare as possible */
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#define CPU_MMU_INDEX (cpu_mmu_index(env, false))
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#define MEMSUFFIX _data
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#define CPU_MMU_INDEX (cpu_mmu_index(env, true))
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#define MEMSUFFIX _code
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#define SOFTMMU_CODE_ACCESS
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#define DATA_SIZE 1
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 2
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 4
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#include "exec/cpu_ldst_template.h"
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#define DATA_SIZE 8
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#include "exec/cpu_ldst_template.h"
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#undef CPU_MMU_INDEX
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#undef MEMSUFFIX
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#undef SOFTMMU_CODE_ACCESS
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#endif /* defined(CONFIG_USER_ONLY) */
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/**
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* tlb_vaddr_to_host:
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* @env: CPUArchState
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* @addr: guest virtual address to look up
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* @access_type: 0 for read, 1 for write, 2 for execute
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* @mmu_idx: MMU index to use for lookup
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*
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* Look up the specified guest virtual index in the TCG softmmu TLB.
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* If the TLB contains a host virtual address suitable for direct RAM
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* access, then return it. Otherwise (TLB miss, TLB entry is for an
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* I/O access, etc) return NULL.
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*
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* This is the equivalent of the initial fast-path code used by
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* TCG backends for guest load and store accesses.
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*/
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static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr,
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int access_type, int mmu_idx)
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{
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#if defined(CONFIG_USER_ONLY)
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return g2h(addr);
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#else
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CPUTLBEntry *tlbentry = tlb_entry(env, mmu_idx, addr);
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target_ulong tlb_addr;
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uintptr_t haddr;
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switch (access_type) {
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case 0:
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tlb_addr = tlbentry->addr_read;
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break;
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case 1:
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tlb_addr = tlb_addr_write(tlbentry);
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break;
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case 2:
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tlb_addr = tlbentry->addr_code;
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break;
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default:
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g_assert_not_reached();
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}
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if (!tlb_hit(tlb_addr, addr)) {
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/* TLB entry is for a different page */
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return NULL;
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}
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if (tlb_addr & ~TARGET_PAGE_MASK) {
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/* IO access */
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return NULL;
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}
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haddr = (uintptr_t)(addr + tlbentry->addend);
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return (void *)haddr;
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#endif /* defined(CONFIG_USER_ONLY) */
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}
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#endif /* CPU_LDST_H */
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