diff options
Diffstat (limited to 'include/accel')
| -rw-r--r-- | include/accel/accel-cpu-target.h | 31 | ||||
| -rw-r--r-- | include/accel/accel-cpu.h | 23 | ||||
| -rw-r--r-- | include/accel/tcg/cpu-ldst-common.h | 122 | ||||
| -rw-r--r-- | include/accel/tcg/cpu-ldst.h | 505 | ||||
| -rw-r--r-- | include/accel/tcg/cpu-mmu-index.h | 42 | ||||
| -rw-r--r-- | include/accel/tcg/cpu-ops.h | 333 | ||||
| -rw-r--r-- | include/accel/tcg/getpc.h | 20 | ||||
| -rw-r--r-- | include/accel/tcg/helper-retaddr.h | 43 | ||||
| -rw-r--r-- | include/accel/tcg/iommu.h | 41 | ||||
| -rw-r--r-- | include/accel/tcg/probe.h | 122 | ||||
| -rw-r--r-- | include/accel/tcg/tb-cpu-state.h | 18 |
11 files changed, 1300 insertions, 0 deletions
diff --git a/include/accel/accel-cpu-target.h b/include/accel/accel-cpu-target.h new file mode 100644 index 0000000..6feb344 --- /dev/null +++ b/include/accel/accel-cpu-target.h @@ -0,0 +1,31 @@ +/* + * Accelerator interface, specializes CPUClass + * This header is used only by target-specific code. + * + * Copyright 2021 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef ACCEL_CPU_TARGET_H +#define ACCEL_CPU_TARGET_H + +/* + * This header is used to define new accelerator-specific target-specific + * accelerator cpu subclasses. + * It uses CPU_RESOLVING_TYPE, so this is clearly target-specific. + * + * Do not try to use for any other purpose than the implementation of new + * subclasses in target/, or the accel implementation itself in accel/ + */ + +#include "qom/object.h" +#include "accel/accel-cpu.h" +#include "cpu.h" + +#define TYPE_ACCEL_CPU "accel-" CPU_RESOLVING_TYPE +#define ACCEL_CPU_NAME(name) (name "-" TYPE_ACCEL_CPU) +DECLARE_CLASS_CHECKERS(AccelCPUClass, ACCEL_CPU, TYPE_ACCEL_CPU) + +#endif /* ACCEL_CPU_H */ diff --git a/include/accel/accel-cpu.h b/include/accel/accel-cpu.h new file mode 100644 index 0000000..9e7eede --- /dev/null +++ b/include/accel/accel-cpu.h @@ -0,0 +1,23 @@ +/* + * Accelerator interface, specializes CPUClass + * + * Copyright 2021 SUSE LLC + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef ACCEL_CPU_H +#define ACCEL_CPU_H + +#include "qom/object.h" +#include "hw/core/cpu.h" + +typedef struct AccelCPUClass { + ObjectClass parent_class; + + void (*cpu_class_init)(CPUClass *cc); + void (*cpu_instance_init)(CPUState *cpu); + bool (*cpu_target_realize)(CPUState *cpu, Error **errp); +} AccelCPUClass; + +#endif /* ACCEL_CPU_H */ diff --git a/include/accel/tcg/cpu-ldst-common.h b/include/accel/tcg/cpu-ldst-common.h new file mode 100644 index 0000000..8bf17c2 --- /dev/null +++ b/include/accel/tcg/cpu-ldst-common.h @@ -0,0 +1,122 @@ +/* + * Software MMU support + * + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#ifndef ACCEL_TCG_CPU_LDST_COMMON_H +#define ACCEL_TCG_CPU_LDST_COMMON_H + +#ifndef CONFIG_TCG +#error Can only include this header with TCG +#endif + +#include "exec/memopidx.h" +#include "exec/vaddr.h" +#include "exec/mmu-access-type.h" +#include "qemu/int128.h" + +uint8_t cpu_ldb_mmu(CPUArchState *env, vaddr ptr, MemOpIdx oi, uintptr_t ra); +uint16_t cpu_ldw_mmu(CPUArchState *env, vaddr ptr, MemOpIdx oi, uintptr_t ra); +uint32_t cpu_ldl_mmu(CPUArchState *env, vaddr ptr, MemOpIdx oi, uintptr_t ra); +uint64_t cpu_ldq_mmu(CPUArchState *env, vaddr ptr, MemOpIdx oi, uintptr_t ra); +Int128 cpu_ld16_mmu(CPUArchState *env, vaddr addr, MemOpIdx oi, uintptr_t ra); + +void cpu_stb_mmu(CPUArchState *env, vaddr ptr, uint8_t val, + MemOpIdx oi, uintptr_t ra); +void cpu_stw_mmu(CPUArchState *env, vaddr ptr, uint16_t val, + MemOpIdx oi, uintptr_t ra); +void cpu_stl_mmu(CPUArchState *env, vaddr ptr, uint32_t val, + MemOpIdx oi, uintptr_t ra); +void cpu_stq_mmu(CPUArchState *env, vaddr ptr, uint64_t val, + MemOpIdx oi, uintptr_t ra); +void cpu_st16_mmu(CPUArchState *env, vaddr addr, Int128 val, + MemOpIdx oi, uintptr_t ra); + +uint32_t cpu_atomic_cmpxchgb_mmu(CPUArchState *env, vaddr addr, + uint32_t cmpv, uint32_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint32_t cpu_atomic_cmpxchgw_le_mmu(CPUArchState *env, vaddr addr, + uint32_t cmpv, uint32_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint32_t cpu_atomic_cmpxchgl_le_mmu(CPUArchState *env, vaddr addr, + uint32_t cmpv, uint32_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint64_t cpu_atomic_cmpxchgq_le_mmu(CPUArchState *env, vaddr addr, + uint64_t cmpv, uint64_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint32_t cpu_atomic_cmpxchgw_be_mmu(CPUArchState *env, vaddr addr, + uint32_t cmpv, uint32_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint32_t cpu_atomic_cmpxchgl_be_mmu(CPUArchState *env, vaddr addr, + uint32_t cmpv, uint32_t newv, + MemOpIdx oi, uintptr_t retaddr); +uint64_t cpu_atomic_cmpxchgq_be_mmu(CPUArchState *env, vaddr addr, + uint64_t cmpv, uint64_t newv, + MemOpIdx oi, uintptr_t retaddr); + +#define GEN_ATOMIC_HELPER(NAME, TYPE, SUFFIX) \ +TYPE cpu_atomic_ ## NAME ## SUFFIX ## _mmu \ + (CPUArchState *env, vaddr addr, TYPE val, \ + MemOpIdx oi, uintptr_t retaddr); + +#ifdef CONFIG_ATOMIC64 +#define GEN_ATOMIC_HELPER_ALL(NAME) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, b) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_be) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_be) \ + GEN_ATOMIC_HELPER(NAME, uint64_t, q_le) \ + GEN_ATOMIC_HELPER(NAME, uint64_t, q_be) +#else +#define GEN_ATOMIC_HELPER_ALL(NAME) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, b) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_be) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_be) +#endif + +GEN_ATOMIC_HELPER_ALL(fetch_add) +GEN_ATOMIC_HELPER_ALL(fetch_sub) +GEN_ATOMIC_HELPER_ALL(fetch_and) +GEN_ATOMIC_HELPER_ALL(fetch_or) +GEN_ATOMIC_HELPER_ALL(fetch_xor) +GEN_ATOMIC_HELPER_ALL(fetch_smin) +GEN_ATOMIC_HELPER_ALL(fetch_umin) +GEN_ATOMIC_HELPER_ALL(fetch_smax) +GEN_ATOMIC_HELPER_ALL(fetch_umax) + +GEN_ATOMIC_HELPER_ALL(add_fetch) +GEN_ATOMIC_HELPER_ALL(sub_fetch) +GEN_ATOMIC_HELPER_ALL(and_fetch) +GEN_ATOMIC_HELPER_ALL(or_fetch) +GEN_ATOMIC_HELPER_ALL(xor_fetch) +GEN_ATOMIC_HELPER_ALL(smin_fetch) +GEN_ATOMIC_HELPER_ALL(umin_fetch) +GEN_ATOMIC_HELPER_ALL(smax_fetch) +GEN_ATOMIC_HELPER_ALL(umax_fetch) + +GEN_ATOMIC_HELPER_ALL(xchg) + +#undef GEN_ATOMIC_HELPER_ALL +#undef GEN_ATOMIC_HELPER + +Int128 cpu_atomic_cmpxchgo_le_mmu(CPUArchState *env, vaddr addr, + Int128 cmpv, Int128 newv, + MemOpIdx oi, uintptr_t retaddr); +Int128 cpu_atomic_cmpxchgo_be_mmu(CPUArchState *env, vaddr addr, + Int128 cmpv, Int128 newv, + MemOpIdx oi, uintptr_t retaddr); + +uint8_t cpu_ldb_code_mmu(CPUArchState *env, vaddr addr, + MemOpIdx oi, uintptr_t ra); +uint16_t cpu_ldw_code_mmu(CPUArchState *env, vaddr addr, + MemOpIdx oi, uintptr_t ra); +uint32_t cpu_ldl_code_mmu(CPUArchState *env, vaddr addr, + MemOpIdx oi, uintptr_t ra); +uint64_t cpu_ldq_code_mmu(CPUArchState *env, vaddr addr, + MemOpIdx oi, uintptr_t ra); + +#endif /* ACCEL_TCG_CPU_LDST_COMMON_H */ diff --git a/include/accel/tcg/cpu-ldst.h b/include/accel/tcg/cpu-ldst.h new file mode 100644 index 0000000..0de7f5e --- /dev/null +++ b/include/accel/tcg/cpu-ldst.h @@ -0,0 +1,505 @@ +/* + * Software MMU support (per-target) + * + * 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/>. + * + */ + +/* + * 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. + * + * The syntax for the accessors is: + * + * load: cpu_ld{sign}{size}{end}_{mmusuffix}(env, ptr) + * cpu_ld{sign}{size}{end}_{mmusuffix}_ra(env, ptr, retaddr) + * cpu_ld{sign}{size}{end}_mmuidx_ra(env, ptr, mmu_idx, retaddr) + * cpu_ld{sign}{size}{end}_mmu(env, ptr, oi, retaddr) + * + * store: cpu_st{size}{end}_{mmusuffix}(env, ptr, val) + * cpu_st{size}{end}_{mmusuffix}_ra(env, ptr, val, retaddr) + * cpu_st{size}{end}_mmuidx_ra(env, ptr, val, mmu_idx, retaddr) + * cpu_st{size}{end}_mmu(env, ptr, val, oi, retaddr) + * + * sign is: + * (empty): for 32 and 64 bit sizes + * u : unsigned + * s : signed + * + * size is: + * b: 8 bits + * w: 16 bits + * l: 32 bits + * q: 64 bits + * + * end is: + * (empty): for target native endian, or for 8 bit access + * _be: for forced big endian + * _le: for forced little endian + * + * mmusuffix is one of the generic suffixes "data" or "code", or "mmuidx". + * The "mmuidx" suffix carries an extra mmu_idx argument that specifies + * the index to use; the "data" and "code" suffixes take the index from + * cpu_mmu_index(). + * + * The "mmu" suffix carries the full MemOpIdx, with both mmu_idx and the + * MemOp including alignment requirements. The alignment will be enforced. + */ +#ifndef ACCEL_TCG_CPU_LDST_H +#define ACCEL_TCG_CPU_LDST_H + +#ifndef CONFIG_TCG +#error Can only include this header with TCG +#endif + +#include "exec/cpu-common.h" +#include "accel/tcg/cpu-ldst-common.h" +#include "accel/tcg/cpu-mmu-index.h" +#include "exec/abi_ptr.h" + +#if defined(CONFIG_USER_ONLY) +#include "user/guest-host.h" +#endif /* CONFIG_USER_ONLY */ + +static inline uint32_t +cpu_ldub_mmuidx_ra(CPUArchState *env, abi_ptr addr, int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); + return cpu_ldb_mmu(env, addr, oi, ra); +} + +static inline int +cpu_ldsb_mmuidx_ra(CPUArchState *env, abi_ptr addr, int mmu_idx, uintptr_t ra) +{ + return (int8_t)cpu_ldub_mmuidx_ra(env, addr, mmu_idx, ra); +} + +static inline uint32_t +cpu_lduw_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUW | MO_UNALN, mmu_idx); + return cpu_ldw_mmu(env, addr, oi, ra); +} + +static inline int +cpu_ldsw_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + return (int16_t)cpu_lduw_be_mmuidx_ra(env, addr, mmu_idx, ra); +} + +static inline uint32_t +cpu_ldl_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUL | MO_UNALN, mmu_idx); + return cpu_ldl_mmu(env, addr, oi, ra); +} + +static inline uint64_t +cpu_ldq_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUQ | MO_UNALN, mmu_idx); + return cpu_ldq_mmu(env, addr, oi, ra); +} + +static inline uint32_t +cpu_lduw_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUW | MO_UNALN, mmu_idx); + return cpu_ldw_mmu(env, addr, oi, ra); +} + +static inline int +cpu_ldsw_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + return (int16_t)cpu_lduw_le_mmuidx_ra(env, addr, mmu_idx, ra); +} + +static inline uint32_t +cpu_ldl_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUL | MO_UNALN, mmu_idx); + return cpu_ldl_mmu(env, addr, oi, ra); +} + +static inline uint64_t +cpu_ldq_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUQ | MO_UNALN, mmu_idx); + return cpu_ldq_mmu(env, addr, oi, ra); +} + +static inline void +cpu_stb_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint32_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); + cpu_stb_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stw_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint32_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUW | MO_UNALN, mmu_idx); + cpu_stw_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stl_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint32_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUL | MO_UNALN, mmu_idx); + cpu_stl_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stq_be_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint64_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_BEUQ | MO_UNALN, mmu_idx); + cpu_stq_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stw_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint32_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUW | MO_UNALN, mmu_idx); + cpu_stw_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stl_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint32_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUL | MO_UNALN, mmu_idx); + cpu_stl_mmu(env, addr, val, oi, ra); +} + +static inline void +cpu_stq_le_mmuidx_ra(CPUArchState *env, abi_ptr addr, uint64_t val, + int mmu_idx, uintptr_t ra) +{ + MemOpIdx oi = make_memop_idx(MO_LEUQ | MO_UNALN, mmu_idx); + cpu_stq_mmu(env, addr, val, oi, ra); +} + +/*--------------------------*/ + +static inline uint32_t +cpu_ldub_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_ldub_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline int +cpu_ldsb_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + return (int8_t)cpu_ldub_data_ra(env, addr, ra); +} + +static inline uint32_t +cpu_lduw_be_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_lduw_be_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline int +cpu_ldsw_be_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + return (int16_t)cpu_lduw_be_data_ra(env, addr, ra); +} + +static inline uint32_t +cpu_ldl_be_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_ldl_be_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline uint64_t +cpu_ldq_be_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_ldq_be_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline uint32_t +cpu_lduw_le_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_lduw_le_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline int +cpu_ldsw_le_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + return (int16_t)cpu_lduw_le_data_ra(env, addr, ra); +} + +static inline uint32_t +cpu_ldl_le_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_ldl_le_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline uint64_t +cpu_ldq_le_data_ra(CPUArchState *env, abi_ptr addr, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + return cpu_ldq_le_mmuidx_ra(env, addr, mmu_index, ra); +} + +static inline void +cpu_stb_data_ra(CPUArchState *env, abi_ptr addr, uint32_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stb_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stw_be_data_ra(CPUArchState *env, abi_ptr addr, uint32_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stw_be_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stl_be_data_ra(CPUArchState *env, abi_ptr addr, uint32_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stl_be_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stq_be_data_ra(CPUArchState *env, abi_ptr addr, uint64_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stq_be_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stw_le_data_ra(CPUArchState *env, abi_ptr addr, uint32_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stw_le_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stl_le_data_ra(CPUArchState *env, abi_ptr addr, uint32_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stl_le_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +static inline void +cpu_stq_le_data_ra(CPUArchState *env, abi_ptr addr, uint64_t val, uintptr_t ra) +{ + int mmu_index = cpu_mmu_index(env_cpu(env), false); + cpu_stq_le_mmuidx_ra(env, addr, val, mmu_index, ra); +} + +/*--------------------------*/ + +static inline uint32_t +cpu_ldub_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_ldub_data_ra(env, addr, 0); +} + +static inline int +cpu_ldsb_data(CPUArchState *env, abi_ptr addr) +{ + return (int8_t)cpu_ldub_data(env, addr); +} + +static inline uint32_t +cpu_lduw_be_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_lduw_be_data_ra(env, addr, 0); +} + +static inline int +cpu_ldsw_be_data(CPUArchState *env, abi_ptr addr) +{ + return (int16_t)cpu_lduw_be_data(env, addr); +} + +static inline uint32_t +cpu_ldl_be_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_ldl_be_data_ra(env, addr, 0); +} + +static inline uint64_t +cpu_ldq_be_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_ldq_be_data_ra(env, addr, 0); +} + +static inline uint32_t +cpu_lduw_le_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_lduw_le_data_ra(env, addr, 0); +} + +static inline int +cpu_ldsw_le_data(CPUArchState *env, abi_ptr addr) +{ + return (int16_t)cpu_lduw_le_data(env, addr); +} + +static inline uint32_t +cpu_ldl_le_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_ldl_le_data_ra(env, addr, 0); +} + +static inline uint64_t +cpu_ldq_le_data(CPUArchState *env, abi_ptr addr) +{ + return cpu_ldq_le_data_ra(env, addr, 0); +} + +static inline void +cpu_stb_data(CPUArchState *env, abi_ptr addr, uint32_t val) +{ + cpu_stb_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stw_be_data(CPUArchState *env, abi_ptr addr, uint32_t val) +{ + cpu_stw_be_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stl_be_data(CPUArchState *env, abi_ptr addr, uint32_t val) +{ + cpu_stl_be_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stq_be_data(CPUArchState *env, abi_ptr addr, uint64_t val) +{ + cpu_stq_be_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stw_le_data(CPUArchState *env, abi_ptr addr, uint32_t val) +{ + cpu_stw_le_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stl_le_data(CPUArchState *env, abi_ptr addr, uint32_t val) +{ + cpu_stl_le_data_ra(env, addr, val, 0); +} + +static inline void +cpu_stq_le_data(CPUArchState *env, abi_ptr addr, uint64_t val) +{ + cpu_stq_le_data_ra(env, addr, val, 0); +} + +#if TARGET_BIG_ENDIAN +# define cpu_lduw_data cpu_lduw_be_data +# define cpu_ldsw_data cpu_ldsw_be_data +# define cpu_ldl_data cpu_ldl_be_data +# define cpu_ldq_data cpu_ldq_be_data +# define cpu_lduw_data_ra cpu_lduw_be_data_ra +# define cpu_ldsw_data_ra cpu_ldsw_be_data_ra +# define cpu_ldl_data_ra cpu_ldl_be_data_ra +# define cpu_ldq_data_ra cpu_ldq_be_data_ra +# define cpu_lduw_mmuidx_ra cpu_lduw_be_mmuidx_ra +# define cpu_ldsw_mmuidx_ra cpu_ldsw_be_mmuidx_ra +# define cpu_ldl_mmuidx_ra cpu_ldl_be_mmuidx_ra +# define cpu_ldq_mmuidx_ra cpu_ldq_be_mmuidx_ra +# define cpu_stw_data cpu_stw_be_data +# define cpu_stl_data cpu_stl_be_data +# define cpu_stq_data cpu_stq_be_data +# define cpu_stw_data_ra cpu_stw_be_data_ra +# define cpu_stl_data_ra cpu_stl_be_data_ra +# define cpu_stq_data_ra cpu_stq_be_data_ra +# define cpu_stw_mmuidx_ra cpu_stw_be_mmuidx_ra +# define cpu_stl_mmuidx_ra cpu_stl_be_mmuidx_ra +# define cpu_stq_mmuidx_ra cpu_stq_be_mmuidx_ra +#else +# define cpu_lduw_data cpu_lduw_le_data +# define cpu_ldsw_data cpu_ldsw_le_data +# define cpu_ldl_data cpu_ldl_le_data +# define cpu_ldq_data cpu_ldq_le_data +# define cpu_lduw_data_ra cpu_lduw_le_data_ra +# define cpu_ldsw_data_ra cpu_ldsw_le_data_ra +# define cpu_ldl_data_ra cpu_ldl_le_data_ra +# define cpu_ldq_data_ra cpu_ldq_le_data_ra +# define cpu_lduw_mmuidx_ra cpu_lduw_le_mmuidx_ra +# define cpu_ldsw_mmuidx_ra cpu_ldsw_le_mmuidx_ra +# define cpu_ldl_mmuidx_ra cpu_ldl_le_mmuidx_ra +# define cpu_ldq_mmuidx_ra cpu_ldq_le_mmuidx_ra +# define cpu_stw_data cpu_stw_le_data +# define cpu_stl_data cpu_stl_le_data +# define cpu_stq_data cpu_stq_le_data +# define cpu_stw_data_ra cpu_stw_le_data_ra +# define cpu_stl_data_ra cpu_stl_le_data_ra +# define cpu_stq_data_ra cpu_stq_le_data_ra +# define cpu_stw_mmuidx_ra cpu_stw_le_mmuidx_ra +# define cpu_stl_mmuidx_ra cpu_stl_le_mmuidx_ra +# define cpu_stq_mmuidx_ra cpu_stq_le_mmuidx_ra +#endif + +static inline uint32_t cpu_ldub_code(CPUArchState *env, abi_ptr addr) +{ + CPUState *cs = env_cpu(env); + MemOpIdx oi = make_memop_idx(MO_UB, cpu_mmu_index(cs, true)); + return cpu_ldb_code_mmu(env, addr, oi, 0); +} + +static inline uint32_t cpu_lduw_code(CPUArchState *env, abi_ptr addr) +{ + CPUState *cs = env_cpu(env); + MemOpIdx oi = make_memop_idx(MO_TEUW, cpu_mmu_index(cs, true)); + return cpu_ldw_code_mmu(env, addr, oi, 0); +} + +static inline uint32_t cpu_ldl_code(CPUArchState *env, abi_ptr addr) +{ + CPUState *cs = env_cpu(env); + MemOpIdx oi = make_memop_idx(MO_TEUL, cpu_mmu_index(cs, true)); + return cpu_ldl_code_mmu(env, addr, oi, 0); +} + +static inline uint64_t cpu_ldq_code(CPUArchState *env, abi_ptr addr) +{ + CPUState *cs = env_cpu(env); + MemOpIdx oi = make_memop_idx(MO_TEUQ, cpu_mmu_index(cs, true)); + return cpu_ldq_code_mmu(env, addr, oi, 0); +} + +#endif /* ACCEL_TCG_CPU_LDST_H */ diff --git a/include/accel/tcg/cpu-mmu-index.h b/include/accel/tcg/cpu-mmu-index.h new file mode 100644 index 0000000..e681a90 --- /dev/null +++ b/include/accel/tcg/cpu-mmu-index.h @@ -0,0 +1,42 @@ +/* + * cpu_mmu_index() + * + * Copyright (c) 2003 Fabrice Bellard + * + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#ifndef ACCEL_TCG_CPU_MMU_INDEX_H +#define ACCEL_TCG_CPU_MMU_INDEX_H + +#include "hw/core/cpu.h" +#include "accel/tcg/cpu-ops.h" +#include "tcg/debug-assert.h" +#ifdef COMPILING_PER_TARGET +# ifdef CONFIG_USER_ONLY +# include "cpu.h" +# endif +#endif + +/** + * cpu_mmu_index: + * @env: The cpu environment + * @ifetch: True for code access, false for data access. + * + * Return the core mmu index for the current translation regime. + * This function is used by generic TCG code paths. + */ +static inline int cpu_mmu_index(CPUState *cs, bool ifetch) +{ +#ifdef COMPILING_PER_TARGET +# ifdef CONFIG_USER_ONLY + return MMU_USER_IDX; +# endif +#endif + + int ret = cs->cc->tcg_ops->mmu_index(cs, ifetch); + tcg_debug_assert(ret >= 0 && ret < NB_MMU_MODES); + return ret; +} + +#endif /* ACCEL_TCG_CPU_MMU_INDEX_H */ diff --git a/include/accel/tcg/cpu-ops.h b/include/accel/tcg/cpu-ops.h new file mode 100644 index 0000000..dd8ea30 --- /dev/null +++ b/include/accel/tcg/cpu-ops.h @@ -0,0 +1,333 @@ +/* + * TCG CPU-specific operations + * + * Copyright 2021 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef TCG_CPU_OPS_H +#define TCG_CPU_OPS_H + +#include "exec/breakpoint.h" +#include "exec/hwaddr.h" +#include "exec/memattrs.h" +#include "exec/memop.h" +#include "exec/mmu-access-type.h" +#include "exec/vaddr.h" +#include "accel/tcg/tb-cpu-state.h" +#include "tcg/tcg-mo.h" + +struct TCGCPUOps { + /** + * mttcg_supported: multi-threaded TCG is supported + * + * Target (TCG frontend) supports: + * - atomic instructions + * - memory ordering primitives (barriers) + */ + bool mttcg_supported; + + /** + * @precise_smc: Stores which modify code within the current TB force + * the TB to exit; the next executed instruction will see + * the result of the store. + */ + bool precise_smc; + + /** + * @guest_default_memory_order: default barrier that is required + * for the guest memory ordering. + */ + TCGBar guest_default_memory_order; + + /** + * @initialize: Initialize TCG state + * + * Called when the first CPU is realized. + */ + void (*initialize)(void); + /** + * @translate_code: Translate guest instructions to TCGOps + * @cpu: cpu context + * @tb: translation block + * @max_insns: max number of instructions to translate + * @pc: guest virtual program counter address + * @host_pc: host physical program counter address + * + * This function must be provided by the target, which should create + * the target-specific DisasContext, and then invoke translator_loop. + */ + void (*translate_code)(CPUState *cpu, TranslationBlock *tb, + int *max_insns, vaddr pc, void *host_pc); + /** + * @get_tb_cpu_state: Extract CPU state for a TCG #TranslationBlock + * + * Fill in all data required to select or compile a TranslationBlock. + */ + TCGTBCPUState (*get_tb_cpu_state)(CPUState *cs); + /** + * @synchronize_from_tb: Synchronize state from a TCG #TranslationBlock + * + * This is called when we abandon execution of a TB before starting it, + * and must set all parts of the CPU state which the previous TB in the + * chain may not have updated. + * By default, when this is NULL, a call is made to @set_pc(tb->pc). + * + * If more state needs to be restored, the target must implement a + * function to restore all the state, and register it here. + */ + void (*synchronize_from_tb)(CPUState *cpu, const TranslationBlock *tb); + /** + * @restore_state_to_opc: Synchronize state from INDEX_op_start_insn + * + * This is called when we unwind state in the middle of a TB, + * usually before raising an exception. Set all part of the CPU + * state which are tracked insn-by-insn in the target-specific + * arguments to start_insn, passed as @data. + */ + void (*restore_state_to_opc)(CPUState *cpu, const TranslationBlock *tb, + const uint64_t *data); + + /** @cpu_exec_enter: Callback for cpu_exec preparation */ + void (*cpu_exec_enter)(CPUState *cpu); + /** @cpu_exec_exit: Callback for cpu_exec cleanup */ + void (*cpu_exec_exit)(CPUState *cpu); + /** @debug_excp_handler: Callback for handling debug exceptions */ + void (*debug_excp_handler)(CPUState *cpu); + + /** @mmu_index: Callback for choosing softmmu mmu index */ + int (*mmu_index)(CPUState *cpu, bool ifetch); + +#ifdef CONFIG_USER_ONLY + /** + * @fake_user_interrupt: Callback for 'fake exception' handling. + * + * Simulate 'fake exception' which will be handled outside the + * cpu execution loop (hack for x86 user mode). + */ + void (*fake_user_interrupt)(CPUState *cpu); + + /** + * record_sigsegv: + * @cpu: cpu context + * @addr: faulting guest address + * @access_type: access was read/write/execute + * @maperr: true for invalid page, false for permission fault + * @ra: host pc for unwinding + * + * We are about to raise SIGSEGV with si_code set for @maperr, + * and si_addr set for @addr. Record anything further needed + * for the signal ucontext_t. + * + * If the emulated kernel does not provide anything to the signal + * handler with anything besides the user context registers, and + * the siginfo_t, then this hook need do nothing and may be omitted. + * Otherwise, record the data and return; the caller will raise + * the signal, unwind the cpu state, and return to the main loop. + * + * If it is simpler to re-use the sysemu tlb_fill code, @ra is provided + * so that a "normal" cpu exception can be raised. In this case, + * the signal must be raised by the architecture cpu_loop. + */ + void (*record_sigsegv)(CPUState *cpu, vaddr addr, + MMUAccessType access_type, + bool maperr, uintptr_t ra); + /** + * record_sigbus: + * @cpu: cpu context + * @addr: misaligned guest address + * @access_type: access was read/write/execute + * @ra: host pc for unwinding + * + * We are about to raise SIGBUS with si_code BUS_ADRALN, + * and si_addr set for @addr. Record anything further needed + * for the signal ucontext_t. + * + * If the emulated kernel does not provide the signal handler with + * anything besides the user context registers, and the siginfo_t, + * then this hook need do nothing and may be omitted. + * Otherwise, record the data and return; the caller will raise + * the signal, unwind the cpu state, and return to the main loop. + * + * If it is simpler to re-use the sysemu do_unaligned_access code, + * @ra is provided so that a "normal" cpu exception can be raised. + * In this case, the signal must be raised by the architecture cpu_loop. + */ + void (*record_sigbus)(CPUState *cpu, vaddr addr, + MMUAccessType access_type, uintptr_t ra); + + /** + * untagged_addr: Remove an ignored tag from an address + * @cpu: cpu context + * @addr: tagged guest address + */ + vaddr (*untagged_addr)(CPUState *cs, vaddr addr); +#else + /** @do_interrupt: Callback for interrupt handling. */ + void (*do_interrupt)(CPUState *cpu); + /** @cpu_exec_interrupt: Callback for processing interrupts in cpu_exec */ + bool (*cpu_exec_interrupt)(CPUState *cpu, int interrupt_request); + /** @cpu_exec_reset: Callback for reset in cpu_exec. */ + void (*cpu_exec_reset)(CPUState *cpu); + /** + * @cpu_exec_halt: Callback for handling halt in cpu_exec. + * + * The target CPU should do any special processing here that it needs + * to do when the CPU is in the halted state. + * + * Return true to indicate that the CPU should now leave halt, false + * if it should remain in the halted state. (This should generally + * be the same value that cpu_has_work() would return.) + * + * This method must be provided. If the target does not need to + * do anything special for halt, the same function used for its + * SysemuCPUOps::has_work method can be used here, as they have the + * same function signature. + */ + bool (*cpu_exec_halt)(CPUState *cpu); + /** + * @tlb_fill_align: Handle a softmmu tlb miss + * @cpu: cpu context + * @out: output page properties + * @addr: virtual address + * @access_type: read, write or execute + * @mmu_idx: mmu context + * @memop: memory operation for the access + * @size: memory access size, or 0 for whole page + * @probe: test only, no fault + * @ra: host return address for exception unwind + * + * If the access is valid, fill in @out and return true. + * Otherwise if probe is true, return false. + * Otherwise raise an exception and do not return. + * + * The alignment check for the access is deferred to this hook, + * so that the target can determine the priority of any alignment + * fault with respect to other potential faults from paging. + * Zero may be passed for @memop to skip any alignment check + * for non-memory-access operations such as probing. + */ + bool (*tlb_fill_align)(CPUState *cpu, CPUTLBEntryFull *out, vaddr addr, + MMUAccessType access_type, int mmu_idx, + MemOp memop, int size, bool probe, uintptr_t ra); + /** + * @tlb_fill: Handle a softmmu tlb miss + * + * If the access is valid, call tlb_set_page and return true; + * if the access is invalid and probe is true, return false; + * otherwise raise an exception and do not return. + */ + bool (*tlb_fill)(CPUState *cpu, vaddr address, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr); + /** + * @pointer_wrap: + * + * We have incremented @base to @result, resulting in a page change. + * For the current cpu state, adjust @result for possible overflow. + */ + vaddr (*pointer_wrap)(CPUState *cpu, int mmu_idx, vaddr result, vaddr base); + /** + * @do_transaction_failed: Callback for handling failed memory transactions + * (ie bus faults or external aborts; not MMU faults) + */ + void (*do_transaction_failed)(CPUState *cpu, hwaddr physaddr, vaddr addr, + unsigned size, MMUAccessType access_type, + int mmu_idx, MemTxAttrs attrs, + MemTxResult response, uintptr_t retaddr); + /** + * @do_unaligned_access: Callback for unaligned access handling + * The callback must exit via raising an exception. + */ + G_NORETURN void (*do_unaligned_access)(CPUState *cpu, vaddr addr, + MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr); + + /** + * @adjust_watchpoint_address: hack for cpu_check_watchpoint used by ARM + */ + vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len); + + /** + * @debug_check_watchpoint: return true if the architectural + * watchpoint whose address has matched should really fire, used by ARM + * and RISC-V + */ + bool (*debug_check_watchpoint)(CPUState *cpu, CPUWatchpoint *wp); + + /** + * @debug_check_breakpoint: return true if the architectural + * breakpoint whose PC has matched should really fire. + */ + bool (*debug_check_breakpoint)(CPUState *cpu); + + /** + * @io_recompile_replay_branch: Callback for cpu_io_recompile. + * + * The cpu has been stopped, and cpu_restore_state_from_tb has been + * called. If the faulting instruction is in a delay slot, and the + * target architecture requires re-execution of the branch, then + * adjust the cpu state as required and return true. + */ + bool (*io_recompile_replay_branch)(CPUState *cpu, + const TranslationBlock *tb); + /** + * @need_replay_interrupt: Return %true if @interrupt_request + * needs to be recorded for replay purposes. + */ + bool (*need_replay_interrupt)(int interrupt_request); +#endif /* !CONFIG_USER_ONLY */ +}; + +#if defined(CONFIG_USER_ONLY) + +static inline void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len, + MemTxAttrs atr, int fl, uintptr_t ra) +{ +} + +static inline int cpu_watchpoint_address_matches(CPUState *cpu, + vaddr addr, vaddr len) +{ + return 0; +} + +#else + +/** + * cpu_check_watchpoint: + * @cpu: cpu context + * @addr: guest virtual address + * @len: access length + * @attrs: memory access attributes + * @flags: watchpoint access type + * @ra: unwind return address + * + * Check for a watchpoint hit in [addr, addr+len) of the type + * specified by @flags. Exit via exception with a hit. + */ +void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len, + MemTxAttrs attrs, int flags, uintptr_t ra); + +/** + * cpu_watchpoint_address_matches: + * @cpu: cpu context + * @addr: guest virtual address + * @len: access length + * + * Return the watchpoint flags that apply to [addr, addr+len). + * If no watchpoint is registered for the range, the result is 0. + */ +int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len); + +/* + * Common pointer_wrap implementations. + */ +vaddr cpu_pointer_wrap_notreached(CPUState *, int, vaddr, vaddr); +vaddr cpu_pointer_wrap_uint32(CPUState *, int, vaddr, vaddr); + +#endif + +#endif /* TCG_CPU_OPS_H */ diff --git a/include/accel/tcg/getpc.h b/include/accel/tcg/getpc.h new file mode 100644 index 0000000..0fc08ad --- /dev/null +++ b/include/accel/tcg/getpc.h @@ -0,0 +1,20 @@ +/* + * Get host pc for helper unwinding. + * + * Copyright (c) 2003 Fabrice Bellard + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#ifndef ACCEL_TCG_GETPC_H +#define ACCEL_TCG_GETPC_H + +/* GETPC is the true target of the return instruction that we'll execute. */ +#ifdef 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 + +#endif /* ACCEL_TCG_GETPC_H */ diff --git a/include/accel/tcg/helper-retaddr.h b/include/accel/tcg/helper-retaddr.h new file mode 100644 index 0000000..037fda2 --- /dev/null +++ b/include/accel/tcg/helper-retaddr.h @@ -0,0 +1,43 @@ +/* + * Get user helper pc for memory unwinding. + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#ifndef ACCEL_TCG_HELPER_RETADDR_H +#define ACCEL_TCG_HELPER_RETADDR_H + +/* + * For user-only, helpers that use guest to host address translation + * must protect the actual host memory access by recording 'retaddr' + * for the signal handler. This is required for a race condition in + * which another thread unmaps the page between a probe and the + * actual access. + */ +#ifdef CONFIG_USER_ONLY +extern __thread uintptr_t helper_retaddr; + +static inline void set_helper_retaddr(uintptr_t ra) +{ + helper_retaddr = ra; + /* + * Ensure that this write is visible to the SIGSEGV handler that + * may be invoked due to a subsequent invalid memory operation. + */ + signal_barrier(); +} + +static inline void clear_helper_retaddr(void) +{ + /* + * Ensure that previous memory operations have succeeded before + * removing the data visible to the signal handler. + */ + signal_barrier(); + helper_retaddr = 0; +} +#else +#define set_helper_retaddr(ra) do { } while (0) +#define clear_helper_retaddr() do { } while (0) +#endif + +#endif /* ACCEL_TCG_HELPER_RETADDR_H */ diff --git a/include/accel/tcg/iommu.h b/include/accel/tcg/iommu.h new file mode 100644 index 0000000..90cfd6c --- /dev/null +++ b/include/accel/tcg/iommu.h @@ -0,0 +1,41 @@ +/* + * TCG IOMMU translations. + * + * Copyright (c) 2003 Fabrice Bellard + * SPDX-License-Identifier: LGPL-2.1-or-later + */ +#ifndef ACCEL_TCG_IOMMU_H +#define ACCEL_TCG_IOMMU_H + +#ifdef CONFIG_USER_ONLY +#error Cannot include accel/tcg/iommu.h from user emulation +#endif + +#include "exec/hwaddr.h" +#include "exec/memattrs.h" + +/** + * 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(). + */ +MemoryRegionSection *iotlb_to_section(CPUState *cpu, + hwaddr index, MemTxAttrs attrs); + +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 + diff --git a/include/accel/tcg/probe.h b/include/accel/tcg/probe.h new file mode 100644 index 0000000..dd9ecbb --- /dev/null +++ b/include/accel/tcg/probe.h @@ -0,0 +1,122 @@ +/* + * Probe guest virtual addresses for access permissions. + * + * Copyright (c) 2003 Fabrice Bellard + * SPDX-License-Identifier: LGPL-2.1-or-later + */ +#ifndef ACCEL_TCG_PROBE_H +#define ACCEL_TCG_PROBE_H + +#include "exec/mmu-access-type.h" +#include "exec/vaddr.h" + +/** + * 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. + * + * This function will not fault if @nonfault is set, but will + * return TLB_INVALID_MASK if the page is not mapped, or is not + * accessible with @access_type. + * + * This function will return TLB_MMIO in order to force the access + * to be handled out-of-line if plugins wish to instrument the access. + */ +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_full_mmu: + * Like probe_access_full, except: + * + * This function is intended to be used for page table accesses by + * the target mmu itself. Since such page walking happens while + * handling another potential mmu fault, this function never raises + * exceptions (akin to @nonfault true for probe_access_full). + * Likewise this function does not trigger plugin instrumentation. + */ +int probe_access_full_mmu(CPUArchState *env, vaddr addr, int size, + MMUAccessType access_type, int mmu_idx, + void **phost, CPUTLBEntryFull **pfull); + +#endif /* !CONFIG_USER_ONLY */ + +/** + * 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 we can translate a host virtual address suitable for direct RAM + * access, without causing a guest exception, then return it. + * Otherwise (TLB entry is for an I/O access, guest software + * TLB fill required, etc) return NULL. + */ +void *tlb_vaddr_to_host(CPUArchState *env, vaddr addr, + MMUAccessType access_type, int mmu_idx); + +#endif diff --git a/include/accel/tcg/tb-cpu-state.h b/include/accel/tcg/tb-cpu-state.h new file mode 100644 index 0000000..8f91290 --- /dev/null +++ b/include/accel/tcg/tb-cpu-state.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Definition of TCGTBCPUState. + */ + +#ifndef EXEC_TB_CPU_STATE_H +#define EXEC_TB_CPU_STATE_H + +#include "exec/vaddr.h" + +typedef struct TCGTBCPUState { + vaddr pc; + uint32_t flags; + uint32_t cflags; + uint64_t cs_base; +} TCGTBCPUState; + +#endif |