mirror of
https://github.com/Bareflank/hypervisor
synced 2026-08-17 06:23:04 -04:00
aab477a590
This patch addresses several bugs with the build system: - Lack of Windows support - Clang Tidy was not working properly - Making modifications to the source code would compile, but would not re-link resulting in issues - Removed excess file copying - Make clean now works - Removed unused or confusing folders in the build folder as part of the build process. It is now much easier to traverse the build folder for dependencies - The targets didn't work with extensions. This has been fixed. In addition, the following was also done under this patch - Intrinsics was moved to the top level and out of the VMM - Platform files are now in a folder called "platform" instead of "arch" - All subprojects have the same include/src/tests files structure - All intel specific code is properly organized to match intended namespacing - Removed dead code - A small part of the VMCS was converted to use the delegate pattern - All dependencies are now downloaded at configure time instead of compile time. - The cache directory is now cached by Travis CI - CMake output better matches old build system - Added make rebuild and separate clean targets to remove various parts of the build depending on needs. - Added targets for Clean, Tidy, Rebuild and Format for each subproject - Re-organized the cmake logic so that macros are not spread out - New validation removes unneeded complexity - Removed the need for the compiler wrapper, and in doing so, we now provide a simpilar set of toolchain files - Removed the need for Git repos. All external dependencies are downloaded using a zip or tarball - Libcxx and Libcxxabi are now in their own files. Much similar logic - Unit test CMake files have been greatly simplified - Each subproject is unaware of it's prefix and no long use VMM, USERSPACE or TEST variables in their cmake files - Fixed bugs with the flags - Renamed the varbiables in the default.cmake config to be more consistent and easier to follow in the rest of the code Signed-off-by: “rianquinn” <“rianquinn@gmail.com”>
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* Bareflank Hypervisor
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* Copyright (C) 2015 Assured Information Security, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file bfthreadcontext.h
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*/
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#ifndef BFTHREADCONTEXT
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#define BFTHREADCONTEXT
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#include <bftypes.h>
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#include <bfconstants.h>
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#pragma pack(push, 1)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Return CPUID
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*
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* @return returns the CPUID for the currently executing thread
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*/
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uint64_t thread_context_cpuid(void);
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/**
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* Return TLS data
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*
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* @return returns the TLS data for the currently executing thread
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*/
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uint64_t thread_context_tlsptr(void);
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/**
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* @struct thread_context_t
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*
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* Thread Context
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*
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* On the top of every stack pointer sits one of these structures, which is
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* used to identify thread specific information. For more information on
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* how this works, please see the following post:
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*
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* https://github.com/Bareflank/hypervisor/issues/213
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*
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* Note: If this struct changes, assembly code in the misc module will
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* likely have to change as well since we don't have a clean way to bridge
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* between C and NASM
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*
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* @var thread_context_t::cpuid
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* the cpuid of the thread
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* @var thread_context_t::tlsptr
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* the TLS pointer of the thread
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* @var thread_context_t::reserved1
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* reserved
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* @var thread_context_t::reserved2
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* reserved
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*/
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struct thread_context_t {
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uint64_t cpuid;
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uint64_t tlsptr;
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uint64_t reserved1;
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uint64_t reserved2;
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};
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/**
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* Setup Stack
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*
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* The following function sets up the stack to match the algorithm defined
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* in the following issue:
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*
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* https://github.com/Bareflank/hypervisor/issues/213
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*
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* @param stack the stack pointer
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* @return the stack pointer (in interger form)
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*/
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static inline uint64_t
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setup_stack(void *stack)
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{
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struct thread_context_t *tc;
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uint64_t stack_int = bfrcast(uint64_t, stack);
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uint64_t stack_top = stack_int + (STACK_SIZE * 2);
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stack_top = (stack_top & ~(STACK_SIZE - 1)) - 1;
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stack_int = stack_top - sizeof(struct thread_context_t) - 1;
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tc = bfrcast(struct thread_context_t *, stack_top - sizeof(struct thread_context_t));
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tc->cpuid = thread_context_cpuid();
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tc->tlsptr = thread_context_tlsptr();
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return stack_int;
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}
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#ifdef __cplusplus
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}
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#endif
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#pragma pack(pop)
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#endif
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