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// This file is part of AsmJit project <https://asmjit.com>
//
// See asmjit.h or LICENSE.md for license and copyright information
// SPDX-License-Identifier: Zlib
#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
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