^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * x86_emulate.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Generic x86 (32-bit and 64-bit) instruction decoder and emulator.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2005 Keir Fraser
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * From: xen-unstable 10676:af9809f51f81a3c43f276f00c81a52ef558afda4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef _ASM_X86_KVM_X86_EMULATE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define _ASM_X86_KVM_X86_EMULATE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/desc_defs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct x86_emulate_ctxt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) enum x86_intercept;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) enum x86_intercept_stage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct x86_exception {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) u8 vector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) bool error_code_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u16 error_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) bool nested_page_fault;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u64 address; /* cr2 or nested page fault gpa */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) u8 async_page_fault;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * This struct is used to carry enough information from the instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * decoder to main KVM so that a decision can be made whether the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * instruction needs to be intercepted or not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct x86_instruction_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u8 intercept; /* which intercept */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u8 rep_prefix; /* rep prefix? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u8 modrm_mod; /* mod part of modrm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 modrm_reg; /* index of register used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u8 modrm_rm; /* rm part of modrm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u64 src_val; /* value of source operand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u64 dst_val; /* value of destination operand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u8 src_bytes; /* size of source operand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u8 dst_bytes; /* size of destination operand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u8 ad_bytes; /* size of src/dst address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u64 next_rip; /* rip following the instruction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * x86_emulate_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * These operations represent the instruction emulator's interface to memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * There are two categories of operation: those that act on ordinary memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * regions (*_std), and those that act on memory regions known to require
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * special treatment or emulation (*_emulated).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * The emulator assumes that an instruction accesses only one 'emulated memory'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * location, that this location is the given linear faulting address (cr2), and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * that this is one of the instruction's data operands. Instruction fetches and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * stack operations are assumed never to access emulated memory. The emulator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * automatically deduces which operand of a string-move operation is accessing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * emulated memory, and assumes that the other operand accesses normal memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * NOTES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * 1. The emulator isn't very smart about emulated vs. standard memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * 'Emulated memory' access addresses should be checked for sanity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * 'Normal memory' accesses may fault, and the caller must arrange to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * detect and handle reentrancy into the emulator via recursive faults.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * Accesses may be unaligned and may cross page boundaries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * 2. If the access fails (cannot emulate, or a standard access faults) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * it is up to the memop to propagate the fault to the guest VM via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * some out-of-band mechanism, unknown to the emulator. The memop signals
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * failure by returning X86EMUL_PROPAGATE_FAULT to the emulator, which will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * then immediately bail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * 3. Valid access sizes are 1, 2, 4 and 8 bytes. On x86/32 systems only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * cmpxchg8b_emulated need support 8-byte accesses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * 4. The emulator cannot handle 64-bit mode emulation on an x86/32 system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* Access completed successfully: continue emulation as normal. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define X86EMUL_CONTINUE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* Access is unhandleable: bail from emulation and return error to caller. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define X86EMUL_UNHANDLEABLE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Terminate emulation but return success to the caller. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define X86EMUL_PROPAGATE_FAULT 2 /* propagate a generated fault to guest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define X86EMUL_RETRY_INSTR 3 /* retry the instruction for some reason */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define X86EMUL_CMPXCHG_FAILED 4 /* cmpxchg did not see expected value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define X86EMUL_IO_NEEDED 5 /* IO is needed to complete emulation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define X86EMUL_INTERCEPTED 6 /* Intercepted by nested VMCB/VMCS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct x86_emulate_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * read_gpr: read a general purpose register (rax - r15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @reg: gpr number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) ulong (*read_gpr)(struct x86_emulate_ctxt *ctxt, unsigned reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * write_gpr: write a general purpose register (rax - r15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @reg: gpr number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * @val: value to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) void (*write_gpr)(struct x86_emulate_ctxt *ctxt, unsigned reg, ulong val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * read_std: Read bytes of standard (non-emulated/special) memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Used for descriptor reading.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @addr: [IN ] Linear address from which to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @val: [OUT] Value read from memory, zero-extended to 'u_long'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @bytes: [IN ] Number of bytes to read from memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * @system:[IN ] Whether the access is forced to be at CPL0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int (*read_std)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) unsigned long addr, void *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct x86_exception *fault, bool system);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * read_phys: Read bytes of standard (non-emulated/special) memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * Used for descriptor reading.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * @addr: [IN ] Physical address from which to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * @val: [OUT] Value read from memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @bytes: [IN ] Number of bytes to read from memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int (*read_phys)(struct x86_emulate_ctxt *ctxt, unsigned long addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) void *val, unsigned int bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * write_std: Write bytes of standard (non-emulated/special) memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * Used for descriptor writing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * @addr: [IN ] Linear address to which to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @val: [OUT] Value write to memory, zero-extended to 'u_long'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @bytes: [IN ] Number of bytes to write to memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @system:[IN ] Whether the access is forced to be at CPL0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int (*write_std)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) unsigned long addr, void *val, unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct x86_exception *fault, bool system);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * fetch: Read bytes of standard (non-emulated/special) memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * Used for instruction fetch.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * @addr: [IN ] Linear address from which to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * @val: [OUT] Value read from memory, zero-extended to 'u_long'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * @bytes: [IN ] Number of bytes to read from memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) int (*fetch)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) unsigned long addr, void *val, unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct x86_exception *fault);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * read_emulated: Read bytes from emulated/special memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * @addr: [IN ] Linear address from which to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * @val: [OUT] Value read from memory, zero-extended to 'u_long'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * @bytes: [IN ] Number of bytes to read from memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int (*read_emulated)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned long addr, void *val, unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct x86_exception *fault);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * write_emulated: Write bytes to emulated/special memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * @addr: [IN ] Linear address to which to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * @val: [IN ] Value to write to memory (low-order bytes used as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * required).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * @bytes: [IN ] Number of bytes to write to memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int (*write_emulated)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned long addr, const void *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct x86_exception *fault);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * cmpxchg_emulated: Emulate an atomic (LOCKed) CMPXCHG operation on an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * emulated/special memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * @addr: [IN ] Linear address to access.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @old: [IN ] Value expected to be current at @addr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @new: [IN ] Value to write to @addr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * @bytes: [IN ] Number of bytes to access using CMPXCHG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) int (*cmpxchg_emulated)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned long addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) const void *old,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) const void *new,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) unsigned int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct x86_exception *fault);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) void (*invlpg)(struct x86_emulate_ctxt *ctxt, ulong addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int (*pio_in_emulated)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int size, unsigned short port, void *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) unsigned int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int (*pio_out_emulated)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) int size, unsigned short port, const void *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) unsigned int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) bool (*get_segment)(struct x86_emulate_ctxt *ctxt, u16 *selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct desc_struct *desc, u32 *base3, int seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) void (*set_segment)(struct x86_emulate_ctxt *ctxt, u16 selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct desc_struct *desc, u32 base3, int seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) unsigned long (*get_cached_segment_base)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) void (*get_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) void (*get_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) void (*set_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) void (*set_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ulong (*get_cr)(struct x86_emulate_ctxt *ctxt, int cr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) int (*set_cr)(struct x86_emulate_ctxt *ctxt, int cr, ulong val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) int (*cpl)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int (*get_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong *dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) u64 (*get_smbase)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) void (*set_smbase)(struct x86_emulate_ctxt *ctxt, u64 smbase);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int (*check_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int (*read_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc, u64 *pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) void (*halt)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) void (*wbinvd)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int (*fix_hypercall)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int (*intercept)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct x86_instruction_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) enum x86_intercept_stage stage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) bool (*get_cpuid)(struct x86_emulate_ctxt *ctxt, u32 *eax, u32 *ebx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) u32 *ecx, u32 *edx, bool exact_only);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) bool (*guest_has_long_mode)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) bool (*guest_has_movbe)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) bool (*guest_has_fxsr)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) void (*set_nmi_mask)(struct x86_emulate_ctxt *ctxt, bool masked);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) unsigned (*get_hflags)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) void (*set_hflags)(struct x86_emulate_ctxt *ctxt, unsigned hflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) int (*pre_leave_smm)(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) const char *smstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void (*post_leave_smm)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) int (*set_xcr)(struct x86_emulate_ctxt *ctxt, u32 index, u64 xcr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) typedef u32 __attribute__((vector_size(16))) sse128_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* Type, address-of, and value of an instruction's operand. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct operand {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) enum { OP_REG, OP_MEM, OP_MEM_STR, OP_IMM, OP_XMM, OP_MM, OP_NONE } type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) unsigned int bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) unsigned int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) unsigned long orig_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) u64 orig_val64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) unsigned long *reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct segmented_address {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) ulong ea;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) unsigned seg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) } mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) unsigned xmm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) unsigned mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) } addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) u64 val64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) char valptr[sizeof(sse128_t)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) sse128_t vec_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) u64 mm_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct fetch_cache {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) u8 data[15];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) u8 *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) u8 *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct read_cache {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) u8 data[1024];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) unsigned long pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) unsigned long end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* Execution mode, passed to the emulator. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) enum x86emul_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) X86EMUL_MODE_REAL, /* Real mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) X86EMUL_MODE_VM86, /* Virtual 8086 mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) X86EMUL_MODE_PROT16, /* 16-bit protected mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) X86EMUL_MODE_PROT32, /* 32-bit protected mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) X86EMUL_MODE_PROT64, /* 64-bit (long) mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* These match some of the HF_* flags defined in kvm_host.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) #define X86EMUL_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) #define X86EMUL_SMM_MASK (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #define X86EMUL_SMM_INSIDE_NMI_MASK (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * fastop functions are declared as taking a never-defined fastop parameter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * so they can't be called from C directly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct fastop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) typedef void (*fastop_t)(struct fastop *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct x86_emulate_ctxt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) void *vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) const struct x86_emulate_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* Register state before/after emulation. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) unsigned long eflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned long eip; /* eip before instruction emulation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /* Emulated execution mode, represented by an X86EMUL_MODE value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) enum x86emul_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* interruptibility state, as a result of execution of STI or MOV SS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) int interruptibility;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) bool perm_ok; /* do not check permissions if true */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) bool ud; /* inject an #UD if host doesn't support insn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) bool tf; /* TF value before instruction (after for syscall/sysret) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) bool have_exception;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct x86_exception exception;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /* GPA available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) bool gpa_available;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) gpa_t gpa_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * decode cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* current opcode length in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) u8 opcode_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) u8 b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) u8 intercept;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) u8 op_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) u8 ad_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) int (*execute)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) fastop_t fop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int (*check_perm)(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * The following six fields are cleared together,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * the rest are initialized unconditionally in x86_decode_insn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * or elsewhere
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) bool rip_relative;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) u8 rex_prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) u8 lock_prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) u8 rep_prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* bitmaps of registers in _regs[] that can be read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) u32 regs_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* bitmaps of registers in _regs[] that have been written */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) u32 regs_dirty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* modrm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) u8 modrm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) u8 modrm_mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) u8 modrm_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) u8 modrm_rm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) u8 modrm_seg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) u8 seg_override;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) u64 d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) unsigned long _eip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* Here begins the usercopy section. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct operand src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct operand src2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct operand dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct operand memop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) unsigned long _regs[NR_VCPU_REGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct operand *memopp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct fetch_cache fetch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct read_cache io_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct read_cache mem_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /* Repeat String Operation Prefix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) #define REPE_PREFIX 0xf3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) #define REPNE_PREFIX 0xf2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* CPUID vendors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) #define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) #define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #define X86EMUL_CPUID_VENDOR_AuthenticAMD_edx 0x69746e65
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #define X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx 0x69444d41
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) #define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #define X86EMUL_CPUID_VENDOR_HygonGenuine_ebx 0x6f677948
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) #define X86EMUL_CPUID_VENDOR_HygonGenuine_ecx 0x656e6975
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #define X86EMUL_CPUID_VENDOR_HygonGenuine_edx 0x6e65476e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) #define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) #define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) #define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) #define X86EMUL_CPUID_VENDOR_CentaurHauls_ebx 0x746e6543
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) #define X86EMUL_CPUID_VENDOR_CentaurHauls_ecx 0x736c7561
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) #define X86EMUL_CPUID_VENDOR_CentaurHauls_edx 0x48727561
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static inline bool is_guest_vendor_intel(u32 ebx, u32 ecx, u32 edx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return ebx == X86EMUL_CPUID_VENDOR_GenuineIntel_ebx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ecx == X86EMUL_CPUID_VENDOR_GenuineIntel_ecx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) edx == X86EMUL_CPUID_VENDOR_GenuineIntel_edx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static inline bool is_guest_vendor_amd(u32 ebx, u32 ecx, u32 edx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return (ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) ecx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) edx == X86EMUL_CPUID_VENDOR_AuthenticAMD_edx) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) (ebx == X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ecx == X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) edx == X86EMUL_CPUID_VENDOR_AMDisbetterI_edx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static inline bool is_guest_vendor_hygon(u32 ebx, u32 ecx, u32 edx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return ebx == X86EMUL_CPUID_VENDOR_HygonGenuine_ebx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) ecx == X86EMUL_CPUID_VENDOR_HygonGenuine_ecx &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) edx == X86EMUL_CPUID_VENDOR_HygonGenuine_edx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) enum x86_intercept_stage {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) X86_ICTP_NONE = 0, /* Allow zero-init to not match anything */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) X86_ICPT_PRE_EXCEPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) X86_ICPT_POST_EXCEPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) X86_ICPT_POST_MEMACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) enum x86_intercept {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) x86_intercept_none,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) x86_intercept_cr_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) x86_intercept_cr_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) x86_intercept_clts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) x86_intercept_lmsw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) x86_intercept_smsw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) x86_intercept_dr_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) x86_intercept_dr_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) x86_intercept_lidt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) x86_intercept_sidt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) x86_intercept_lgdt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) x86_intercept_sgdt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) x86_intercept_lldt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) x86_intercept_sldt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) x86_intercept_ltr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) x86_intercept_str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) x86_intercept_rdtsc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) x86_intercept_rdpmc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) x86_intercept_pushf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) x86_intercept_popf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) x86_intercept_cpuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) x86_intercept_rsm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) x86_intercept_iret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) x86_intercept_intn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) x86_intercept_invd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) x86_intercept_pause,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) x86_intercept_hlt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) x86_intercept_invlpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) x86_intercept_invlpga,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) x86_intercept_vmrun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) x86_intercept_vmload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) x86_intercept_vmsave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) x86_intercept_vmmcall,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) x86_intercept_stgi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) x86_intercept_clgi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) x86_intercept_skinit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) x86_intercept_rdtscp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) x86_intercept_rdpid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) x86_intercept_icebp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) x86_intercept_wbinvd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) x86_intercept_monitor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) x86_intercept_mwait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) x86_intercept_rdmsr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) x86_intercept_wrmsr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) x86_intercept_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) x86_intercept_ins,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) x86_intercept_out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) x86_intercept_outs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) x86_intercept_xsetbv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) nr_x86_intercepts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /* Host execution mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) #if defined(CONFIG_X86_32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #define X86EMUL_MODE_HOST X86EMUL_MODE_PROT32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) #elif defined(CONFIG_X86_64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) #define X86EMUL_MODE_HOST X86EMUL_MODE_PROT64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) bool x86_page_table_writing_insn(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) #define EMULATION_FAILED -1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) #define EMULATION_OK 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) #define EMULATION_RESTART 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) #define EMULATION_INTERCEPTED 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) void init_decode_cache(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) int x86_emulate_insn(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) int emulator_task_switch(struct x86_emulate_ctxt *ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) u16 tss_selector, int idt_index, int reason,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) bool has_error_code, u32 error_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) int emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) void emulator_invalidate_register_cache(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) void emulator_writeback_register_cache(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) bool emulator_can_use_gpa(struct x86_emulate_ctxt *ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) #endif /* _ASM_X86_KVM_X86_EMULATE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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