/*
* Software MMU support
*
* 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 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/>.
*
*/
/*
* Generate inline load/store functions for all MMU modes (typically
* at least _user and _kernel) as well as _data versions, for all data
* sizes.
*
* Used by target op helpers.
*
* MMU mode suffixes are defined in target cpu.h.
*/
#ifndef CPU_LDST_H
#define CPU_LDST_H
#if defined(CONFIG_USER_ONLY)
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
#define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + GUEST_BASE))
#if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS
#define h2g_valid(x) 1
#else
#define h2g_valid(x) ({ \
unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
(__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \
(!RESERVED_VA || (__guest < RESERVED_VA)); \
})
#endif
#define h2g_nocheck(x) ({ \
unsigned long __ret = (unsigned long)(x) - GUEST_BASE; \
(abi_ulong)__ret; \
})
#define h2g(x) ({ \
/* Check if given address fits target address space */ \
assert(h2g_valid(x)); \
h2g_nocheck(x); \
})
#define saddr(x) g2h(x)
#define laddr(x) g2h(x)
#else /* !CONFIG_USER_ONLY */
/* NOTE: we use double casts if pointers and target_ulong have
different sizes */
#define saddr(x) (uint8_t *)(intptr_t)(x)
#define laddr(x) (uint8_t *)(intptr_t)(x)
#endif
#define ldub_raw(p) ldub_p(laddr((p)))
#define ldsb_raw(p) ldsb_p(laddr((p)))
#define lduw_raw(p) lduw_p(laddr((p)))
#define ldsw_raw(p) ldsw_p(laddr((p)))
#define ldl_raw(p) ldl_p(laddr((p)))
#define ldq_raw(p) ldq_p(laddr((p)))
#define ldfl_raw(p) ldfl_p(laddr((p)))
#define ldfq_raw(p) ldfq_p(laddr((p)))
#define stb_raw(p, v) stb_p(saddr((p)), v)
#define stw_raw(p, v) stw_p(saddr((p)), v)
#define stl_raw(p, v) stl_p(saddr((p)), v)
#define stq_raw(p, v) stq_p(saddr((p)), v)
#define stfl_raw(p, v) stfl_p(saddr((p)), v)
#define stfq_raw(p, v) stfq_p(saddr((p)), v)
#if defined(CONFIG_USER_ONLY)
/* if user mode, no other memory access functions */
#define ldub(p) ldub_raw(p)
#define ldsb(p) ldsb_raw(p)
#define lduw(p) lduw_raw(p)
#define ldsw(p) ldsw_raw(p)
#define ldl(p) ldl_raw(p)
#define ldq(p) ldq_raw(p)
#define ldfl(p) ldfl_raw(p)
#define ldfq(p) ldfq_raw(p)
#define stb(p, v) stb_raw(p, v)
#define stw(p, v) stw_raw(p, v)
#define stl(p, v) stl_raw(p, v)
#define stq(p, v) stq_raw(p, v)
#define stfl(p, v) stfl_raw(p, v)
#define stfq(p, v) stfq_raw(p, v)
#define cpu_ldub_code(env1, p) ldub_raw(p)
#define cpu_ldsb_code(env1, p) ldsb_raw(p)
#define cpu_lduw_code(env1, p) lduw_raw(p)
#define cpu_ldsw_code(env1, p) ldsw_raw(p)
#define cpu_ldl_code(env1, p) ldl_raw(p)
#define cpu_ldq_code(env1, p) ldq_raw(p)
#define cpu_ldub_data(env, addr) ldub_raw(addr)
#define cpu_lduw_data(env, addr) lduw_raw(addr)
#define cpu_ldsw_data(env, addr) ldsw_raw(addr)
#define cpu_ldl_data(env, addr) ldl_raw(addr)
#define cpu_ldq_data(env, addr) ldq_raw(addr)
#define cpu_stb_data(env, addr, data) stb_raw(addr, data)
#define cpu_stw_data(env, addr, data) stw_raw(addr, data)
#define cpu_stl_data(env, addr, data) stl_raw(addr, data)
#define cpu_stq_data(env, addr, data) stq_raw(addr, data)
#define cpu_ldub_kernel(env, addr) ldub_raw(addr)
#define cpu_lduw_kernel(env, addr) lduw_raw(addr)
#define cpu_ldsw_kernel(env, addr) ldsw_raw(addr)
#define cpu_ldl_kernel(env, addr) ldl_raw(addr)
#define cpu_ldq_kernel(env, addr) ldq_raw(addr)
#define cpu_stb_kernel(env, addr, data) stb_raw(addr, data)
#define cpu_stw_kernel(env, addr, data) stw_raw(addr, data)
#define cpu_stl_kernel(env, addr, data) stl_raw(addr, data)
#define cpu_stq_kernel(env, addr, data) stq_raw(addr, data)
#define ldub_kernel(p) ldub_raw(p)
#define ldsb_kernel(p) ldsb_raw(p)
#define lduw_kernel(p) lduw_raw(p)
#define ldsw_kernel(p) ldsw_raw(p)
#define ldl_kernel(p) ldl_raw(p)
#define ldq_kernel(p) ldq_raw(p)
#define ldfl_kernel(p) ldfl_raw(p)
#define ldfq_kernel(p) ldfq_raw(p)
#define stb_kernel(p, v) stb_raw(p, v)
#define stw_kernel(p, v) stw_raw(p, v)
#define stl_kernel(p, v) stl_raw(p, v)
#define stq_kernel(p, v) stq_raw(p, v)
#define stfl_kernel(p, v) stfl_raw(p, v)
#define stfq_kernel(p, vt) stfq_raw(p, v)
#define cpu_ldub_data(env, addr) ldub_raw(addr)
#define cpu_lduw_data(env, addr) lduw_raw(addr)
#define cpu_ldl_data(env, addr) ldl_raw(addr)
#define cpu_stb_data(env, addr, data) stb_raw(addr, data)
#define cpu_stw_data(env, addr, data) stw_raw(addr, data)
#define cpu_stl_data(env, addr, data) stl_raw(addr, data)
#else
/* XXX: find something cleaner.
* Furthermore, this is false for 64 bits targets
*/
#define ldul_user ldl_user
#define ldul_kernel ldl_kernel
#define ldul_hypv ldl_hypv
#define ldul_executive ldl_executive
#define ldul_supervisor ldl_supervisor
/* The memory helpers for tcg-generated code need tcg_target_long etc. */
#include "tcg.h"
uint8_t helper_ldb_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint16_t helper_ldw_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint32_t helper_ldl_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint64_t helper_ldq_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
void helper_stb_mmu(CPUArchState *env, target_ulong addr,
uint8_t val, int mmu_idx);
void helper_stw_mmu(CPUArchState *env, target_ulong addr,
uint16_t val, int mmu_idx);
void helper_stl_mmu(CPUArchState *env, target_ulong addr,
uint32_t val, int mmu_idx);
void helper_stq_mmu(CPUArchState *env, target_ulong addr,
uint64_t val, int mmu_idx);
uint8_t helper_ldb_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint16_t helper_ldw_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint32_t helper_ldl_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
uint64_t helper_ldq_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
#define CPU_MMU_INDEX 0
#define MEMSUFFIX MMU_MODE0_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#define CPU_MMU_INDEX 1
#define MEMSUFFIX MMU_MODE1_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#if (NB_MMU_MODES >= 3)
#define CPU_MMU_INDEX 2
#define MEMSUFFIX MMU_MODE2_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 3) */
#if (NB_MMU_MODES >= 4)
#define CPU_MMU_INDEX 3
#define MEMSUFFIX MMU_MODE3_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 4) */
#if (NB_MMU_MODES >= 5)
#define CPU_MMU_INDEX 4
#define MEMSUFFIX MMU_MODE4_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 5) */
#if (NB_MMU_MODES >= 6)
#define CPU_MMU_INDEX 5
#define MEMSUFFIX MMU_MODE5_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 6) */
#if (NB_MMU_MODES > 6)
#error "NB_MMU_MODES > 6 is not supported for now"
#endif /* (NB_MMU_MODES > 6) */
/* these access are slower, they must be as rare as possible */
#define CPU_MMU_INDEX (cpu_mmu_index(env))
#define MEMSUFFIX _data
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#define ldub(p) ldub_data(p)
#define ldsb(p) ldsb_data(p)
#define lduw(p) lduw_data(p)
#define ldsw(p) ldsw_data(p)
#define ldl(p) ldl_data(p)
#define ldq(p) ldq_data(p)
#define stb(p, v) stb_data(p, v)
#define stw(p, v) stw_data(p, v)
#define stl(p, v) stl_data(p, v)
#define stq(p, v) stq_data(p, v)
#define CPU_MMU_INDEX (cpu_mmu_index(env))
#define MEMSUFFIX _code
#define SOFTMMU_CODE_ACCESS
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"
#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#undef SOFTMMU_CODE_ACCESS
/**
* tlb_vaddr_to_host:
* @env: CPUArchState
* @addr: guest virtual address to look up
* @access_type: 0 for read, 1 for write, 2 for execute
* @mmu_idx: MMU index to use for lookup
*
* Look up the specified guest virtual index in the TCG softmmu TLB.
* If the TLB contains a host virtual address suitable for direct RAM
* access, then return it. Otherwise (TLB miss, TLB entry is for an
* I/O access, etc) return NULL.
*
* This is the equivalent of the initial fast-path code used by
* TCG backends for guest load and store accesses.
*/
static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr,
int access_type, int mmu_idx)
{
int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
CPUTLBEntry *tlbentry = &env->tlb_table[mmu_idx][index];
target_ulong tlb_addr;
uintptr_t haddr;
switch (access_type) {
case 0:
tlb_addr = tlbentry->addr_read;
break;
case 1:
tlb_addr = tlbentry->addr_write;
break;
case 2:
tlb_addr = tlbentry->addr_code;
break;
default:
g_assert_not_reached();
}
if ((addr & TARGET_PAGE_MASK)
!= (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
/* TLB entry is for a different page */
return NULL;
}
if (tlb_addr & ~TARGET_PAGE_MASK) {
/* IO access */
return NULL;
}
haddr = addr + env->tlb_table[mmu_idx][index].addend;
return (void *)haddr;
}
#endif /* defined(CONFIG_USER_ONLY) */
#endif /* CPU_LDST_H */
