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Diffstat (limited to 'client/asmjit/core/environment.cpp')
| -rw-r--r-- | client/asmjit/core/environment.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/client/asmjit/core/environment.cpp b/client/asmjit/core/environment.cpp new file mode 100644 index 0000000..3be2b15 --- /dev/null +++ b/client/asmjit/core/environment.cpp @@ -0,0 +1,64 @@ +// AsmJit - Machine code generation for C++ +// +// * Official AsmJit Home Page: https://asmjit.com +// * Official Github Repository: https://github.com/asmjit/asmjit +// +// Copyright (c) 2008-2020 The AsmJit Authors +// +// This software is provided 'as-is', without any express or implied +// warranty. In no event will the authors be held liable for any damages +// arising from the use of this software. +// +// Permission is granted to anyone to use this software for any purpose, +// including commercial applications, and to alter it and redistribute it +// freely, subject to the following restrictions: +// +// 1. The origin of this software must not be misrepresented; you must not +// claim that you wrote the original software. If you use this software +// in a product, an acknowledgment in the product documentation would be +// appreciated but is not required. +// 2. Altered source versions must be plainly marked as such, and must not be +// misrepresented as being the original software. +// 3. This notice may not be removed or altered from any source distribution. + +#include "../core/api-build_p.h" +#include "../core/environment.h" + +ASMJIT_BEGIN_NAMESPACE + +// X86 Target +// ---------- +// +// - 32-bit - Linux, OSX, BSD, and apparently also Haiku guarantee 16-byte +// stack alignment. Other operating systems are assumed to have +// 4-byte alignment by default for safety reasons. +// - 64-bit - stack must be aligned to 16 bytes. +// +// ARM Target +// ---------- +// +// - 32-bit - Stack must be aligned to 8 bytes. +// - 64-bit - Stack must be aligned to 16 bytes (hardware requirement). +uint32_t Environment::stackAlignment() const noexcept { + if (is64Bit()) { + // Assume 16-byte alignment on any 64-bit target. + return 16; + } + else { + // The following platforms use 16-byte alignment in 32-bit mode. + if (isPlatformLinux() || + isPlatformBSD() || + isPlatformApple() || + isPlatformHaiku()) { + return 16u; + } + + if (isFamilyARM()) + return 8; + + // Bail to 4-byte alignment if we don't know. + return 4; + } +} + +ASMJIT_END_NAMESPACE |