X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e..316670eb35587141e969394ae8537d66b9211e80:/osfmk/i386/start64.s diff --git a/osfmk/i386/start64.s b/osfmk/i386/start64.s index b077e187b..95a9dd664 100644 --- a/osfmk/i386/start64.s +++ b/osfmk/i386/start64.s @@ -1,40 +1,37 @@ /* * Copyright (c) 2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the - * License may not be used to create, or enable the creation or - * redistribution of, unlawful or unlicensed copies of an Apple operating - * system, or to circumvent, violate, or enable the circumvention or - * violation of, any terms of an Apple operating system software license - * agreement. - * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include -#include - #include #include #include #include +#include #include .data @@ -89,25 +86,6 @@ Entry(ml_load_desc64) ret -Entry(ml_64bit_wrmsr64) - /* (uint32_t msr, uint64_t value) */ - /* (uint32_t msr, uint32_t lo, uint32_t hi) */ - - FRAME - - ENTER_64BIT_MODE() - - movl B_ARG0, %ecx - movl B_ARG1, %eax - movl B_ARG2, %edx - wrmsr - - ENTER_COMPAT_MODE() - - EMARF - ret - - Entry(ml_64bit_lldt) /* (int32_t selector) */ @@ -159,26 +137,120 @@ Entry(flush_tlb64) EMARF ret +Entry(set64_cr3) + + FRAME + + movl B_ARG0, %eax + movl B_ARG1, %edx + + ENTER_64BIT_MODE() + + /* %rax = %edx:%eax */ + shl $32, %rax + shrd $32, %rdx, %rax + + mov %rax, %cr3 + + ENTER_COMPAT_MODE() + + EMARF + ret + +Entry(get64_cr3) + + FRAME + + ENTER_64BIT_MODE() + + mov %cr3, %rax + mov %rax, %rdx + shr $32, %rdx // %edx:%eax = %cr3 + + ENTER_COMPAT_MODE() + + EMARF + ret + +Entry(cpuid64) + ENTER_64BIT_MODE() + cpuid + ENTER_COMPAT_MODE() + ret + + /* FXSAVE and FXRSTOR operate in a mode dependent fashion, hence these variants. -* Must be called with interrupts disabled. -* We clear pending x87 exceptions here; this is technically incorrect, since we should -* propagate those to the user, but the compatibility mode kernel is currently not -* prepared to handle exceptions originating in 64-bit kernel mode. However, it may be possible -* to work around this should it prove necessary. -*/ + * Must be called with interrupts disabled. + */ Entry(fxsave64) movl S_ARG0,%eax ENTER_64BIT_MODE() - fnclex - fxsave 0(%eax) + fxsave (%eax) ENTER_COMPAT_MODE() ret Entry(fxrstor64) movl S_ARG0,%eax ENTER_64BIT_MODE() - fnclex - fxrstor 0(%rax) + fxrstor (%rax) ENTER_COMPAT_MODE() ret + +Entry(xsave64o) + ENTER_64BIT_MODE() + .short 0xAE0F + /* MOD 0x4, ECX, 0x1 */ + .byte 0x21 + ENTER_COMPAT_MODE() + ret + +Entry(xrstor64o) + ENTER_64BIT_MODE() + .short 0xAE0F + /* MOD 0x5, ECX 0x1 */ + .byte 0x29 + ENTER_COMPAT_MODE() + ret + +#if CONFIG_VMX + +/* + * __vmxon -- Enter VMX Operation + * int __vmxon(addr64_t v); + */ +Entry(__vmxon) + FRAME + + ENTER_64BIT_MODE() + mov $(VMX_FAIL_INVALID), %ecx + mov $(VMX_FAIL_VALID), %edx + mov $(VMX_SUCCEED), %eax + vmxon 8(%rbp) /* physical addr passed on stack */ + cmovcl %ecx, %eax /* CF = 1, ZF = 0 */ + cmovzl %edx, %eax /* CF = 0, ZF = 1 */ + ENTER_COMPAT_MODE() + + EMARF + ret + +/* + * __vmxoff -- Leave VMX Operation + * int __vmxoff(void); + */ +Entry(__vmxoff) + FRAME + + ENTER_64BIT_MODE() + mov $(VMX_FAIL_INVALID), %ecx + mov $(VMX_FAIL_VALID), %edx + mov $(VMX_SUCCEED), %eax + vmxoff + cmovcl %ecx, %eax /* CF = 1, ZF = 0 */ + cmovzl %edx, %eax /* CF = 0, ZF = 1 */ + ENTER_COMPAT_MODE() + + EMARF + ret + +#endif /* CONFIG_VMX */