KVM: emulator: make x86 emulation modes enum instead of defines
Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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716d51abff
Коммит
9d1b39a967
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@ -249,6 +249,15 @@ struct read_cache {
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unsigned long end;
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};
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/* Execution mode, passed to the emulator. */
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enum x86emul_mode {
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X86EMUL_MODE_REAL, /* Real mode. */
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X86EMUL_MODE_VM86, /* Virtual 8086 mode. */
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X86EMUL_MODE_PROT16, /* 16-bit protected mode. */
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X86EMUL_MODE_PROT32, /* 32-bit protected mode. */
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X86EMUL_MODE_PROT64, /* 64-bit (long) mode. */
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};
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struct x86_emulate_ctxt {
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const struct x86_emulate_ops *ops;
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@ -256,7 +265,7 @@ struct x86_emulate_ctxt {
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unsigned long eflags;
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unsigned long eip; /* eip before instruction emulation */
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/* Emulated execution mode, represented by an X86EMUL_MODE value. */
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int mode;
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enum x86emul_mode mode;
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/* interruptibility state, as a result of execution of STI or MOV SS */
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int interruptibility;
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@ -308,17 +317,6 @@ struct x86_emulate_ctxt {
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#define REPE_PREFIX 0xf3
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#define REPNE_PREFIX 0xf2
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/* Execution mode, passed to the emulator. */
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#define X86EMUL_MODE_REAL 0 /* Real mode. */
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#define X86EMUL_MODE_VM86 1 /* Virtual 8086 mode. */
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#define X86EMUL_MODE_PROT16 2 /* 16-bit protected mode. */
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#define X86EMUL_MODE_PROT32 4 /* 32-bit protected mode. */
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#define X86EMUL_MODE_PROT64 8 /* 64-bit (long) mode. */
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/* any protected mode */
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#define X86EMUL_MODE_PROT (X86EMUL_MODE_PROT16|X86EMUL_MODE_PROT32| \
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X86EMUL_MODE_PROT64)
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/* CPUID vendors */
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#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541
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#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163
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@ -2268,6 +2268,8 @@ static int em_sysenter(struct x86_emulate_ctxt *ctxt)
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if (msr_data == 0x0)
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return emulate_gp(ctxt, 0);
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break;
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default:
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break;
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}
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ctxt->eflags &= ~(EFLG_VM | EFLG_IF | EFLG_RF);
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@ -4400,7 +4402,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
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}
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/* Instruction can only be executed in protected mode */
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if ((ctxt->d & Prot) && !(ctxt->mode & X86EMUL_MODE_PROT)) {
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if ((ctxt->d & Prot) && ctxt->mode < X86EMUL_MODE_PROT16) {
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rc = emulate_ud(ctxt);
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goto done;
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}
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