diff options
Diffstat (limited to '3rdparty/asmjit/src/asmjit/core/callconv.h')
-rw-r--r-- | 3rdparty/asmjit/src/asmjit/core/callconv.h | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/3rdparty/asmjit/src/asmjit/core/callconv.h b/3rdparty/asmjit/src/asmjit/core/callconv.h deleted file mode 100644 index 6e75540c545..00000000000 --- a/3rdparty/asmjit/src/asmjit/core/callconv.h +++ /dev/null @@ -1,374 +0,0 @@ -// 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. - -#ifndef ASMJIT_CORE_CALLCONV_H_INCLUDED -#define ASMJIT_CORE_CALLCONV_H_INCLUDED - -#include "../core/arch.h" -#include "../core/operand.h" -#include "../core/support.h" - -ASMJIT_BEGIN_NAMESPACE - -//! \addtogroup asmjit_function -//! \{ - -// ============================================================================ -// [asmjit::CallConv] -// ============================================================================ - -//! Function calling convention. -//! -//! Function calling convention is a scheme that defines how function parameters -//! are passed and how function returns its result. AsmJit defines a variety of -//! architecture and OS specific calling conventions and also provides a compile -//! time detection to make the code-generation easier. -struct CallConv { - //! Calling convention id, see `Id`. - uint8_t _id; - //! Architecture identifier, see \ref Environment::Arch. - uint8_t _arch; - //! Register assignment strategy. - uint8_t _strategy; - //! Flags. - uint8_t _flags; - - //! Red zone size (AMD64 == 128 bytes). - uint8_t _redZoneSize; - //! Spill zone size (WIN64 == 32 bytes). - uint8_t _spillZoneSize; - //! Natural stack alignment as defined by OS/ABI. - uint8_t _naturalStackAlignment; - uint8_t _reserved[1]; - - //! Mask of all passed registers, per group. - uint32_t _passedRegs[BaseReg::kGroupVirt]; - //! Mask of all preserved registers, per group. - uint32_t _preservedRegs[BaseReg::kGroupVirt]; - - //! Internal limits of AsmJit's CallConv. - enum Limits : uint32_t { - kMaxRegArgsPerGroup = 16 - }; - - //! Passed registers' order. - union RegOrder { - //! Passed registers, ordered. - uint8_t id[kMaxRegArgsPerGroup]; - uint32_t packed[(kMaxRegArgsPerGroup + 3) / 4]; - }; - - //! Passed registers' order, per register group. - RegOrder _passedOrder[BaseReg::kGroupVirt]; - - //! Calling convention id. - //! - //! Calling conventions can be divided into the following groups: - //! - //! - Universal - calling conventions are applicable to any target. They - //! will be converted to a target dependent calling convention at runtime - //! by \ref init(). The purpose of these conventions is to make using - //! functions less target dependent and closer to how they are declared - //! in C and C++. - //! - //! - Target specific - calling conventions that are used by a particular - //! architecture and ABI. For example Windows 64-bit calling convention - //! and AMD64 SystemV calling convention. - enum Id : uint32_t { - //! None or invalid (can't be used). - kIdNone = 0, - - // ------------------------------------------------------------------------ - // [Universal Calling Conventions] - // ------------------------------------------------------------------------ - - //! Standard function call or explicit `__cdecl` where it can be specified. - //! - //! This is a universal convention, which is used to initialize specific - //! calling connventions based on architecture, platform, and its ABI. - kIdCDecl = 1, - - //! `__stdcall` on targets that support this calling convention. - //! - //! \note This calling convention is only supported on 32-bit X86. If used - //! on environment that doesn't support this calling convention \ref kIdCDecl - //! will be used instead. - kIdStdCall = 2, - - //! `__fastcall` on targets that support this calling convention. - //! - //! \note This calling convention is only supported on 32-bit X86. If used - //! on environment that doesn't support this calling convention \ref kIdCDecl - //! will be used instead. - kIdFastCall = 3, - - //! `__vectorcall` on targets that support this calling convention. - //! - //! \note This calling convention is only supported on 32-bit and 64-bit - //! X86 architecture on Windows platform. If used on environment that doesn't - //! support this calling convention \ref kIdCDecl will be used instead. - kIdVectorCall = 4, - - //! `__thiscall` on targets that support this calling convention. - //! - //! \note This calling convention is only supported on 32-bit X86 Windows - //! platform. If used on environment that doesn't support this calling - //! convention \ref kIdCDecl will be used instead. - kIdThisCall = 5, - - //! `__attribute__((regparm(1)))` convention (GCC and Clang). - kIdRegParm1 = 6, - //! `__attribute__((regparm(2)))` convention (GCC and Clang). - kIdRegParm2 = 7, - //! `__attribute__((regparm(3)))` convention (GCC and Clang). - kIdRegParm3 = 8, - - //! Soft-float calling convention (ARM). - //! - //! Floating point arguments are passed via general purpose registers. - kIdSoftFloat = 9, - - //! Hard-float calling convention (ARM). - //! - //! Floating point arguments are passed via SIMD registers. - kIdHardFloat = 10, - - //! AsmJit specific calling convention designed for calling functions - //! inside a multimedia code that don't use many registers internally, - //! but are long enough to be called and not inlined. These functions are - //! usually used to calculate trigonometric functions, logarithms, etc... - kIdLightCall2 = 16, - kIdLightCall3 = 17, - kIdLightCall4 = 18, - - // ------------------------------------------------------------------------ - // [ABI-Specific Calling Conventions] - // ------------------------------------------------------------------------ - - kIdX64SystemV = 32, - kIdX64Windows = 33, - - // ------------------------------------------------------------------------ - // [Host] - // ------------------------------------------------------------------------ - - kIdHost = -#if ASMJIT_ARCH_ARM == 32 && defined(__SOFTFP__) - kIdSoftFloat -#elif ASMJIT_ARCH_ARM == 32 && !defined(__SOFTFP__) - kIdHardFloat -#else - kIdCDecl -#endif - -#ifndef ASMJIT_NO_DEPRECATE - , kIdHostCDecl = kIdCDecl - , kIdHostStdCall = kIdStdCall - , kIdHostFastCall = kIdFastCall - , kIdHostLightCall2 = kIdLightCall2 - , kIdHostLightCall3 = kIdLightCall3 - , kIdHostLightCall4 = kIdLightCall4 -#endif // !ASMJIT_NO_DEPRECATE - }; - - //! Strategy used to assign registers to function arguments. - //! - //! This is AsmJit specific. It basically describes how AsmJit should convert - //! the function arguments defined by `FuncSignature` into register IDs and - //! stack offsets. The default strategy `kStrategyDefault` assigns registers - //! and then stack whereas `kStrategyWin64` strategy does register shadowing - //! as defined by WIN64 calling convention - it applies to 64-bit calling - //! conventions only. - enum Strategy : uint32_t { - //! Default register assignment strategy. - kStrategyDefault = 0, - //! Windows 64-bit ABI register assignment strategy. - kStrategyX64Windows = 1, - //! Windows 64-bit __vectorcall register assignment strategy. - kStrategyX64VectorCall = 2, - - //! Number of assignment strategies. - kStrategyCount = 3 - }; - - //! Calling convention flags. - enum Flags : uint32_t { - //! Callee is responsible for cleaning up the stack. - kFlagCalleePopsStack = 0x01u, - //! Pass vector arguments indirectly (as a pointer). - kFlagIndirectVecArgs = 0x02u, - //! Pass F32 and F64 arguments by VEC128 register. - kFlagPassFloatsByVec = 0x04u, - //! Pass MMX and vector arguments by stack if the function has variable arguments. - kFlagPassVecByStackIfVA = 0x08u, - //! MMX registers are passed and returned via GP registers. - kFlagPassMmxByGp = 0x10u, - //! MMX registers are passed and returned via XMM registers. - kFlagPassMmxByXmm = 0x20u, - //! Calling convention can be used with variable arguments. - kFlagVarArgCompatible = 0x80u - }; - - //! \name Construction & Destruction - //! \{ - - //! Initializes this calling convention to the given `ccId` based on the - //! `environment`. - //! - //! See \ref Id and \ref Environment for more details. - ASMJIT_API Error init(uint32_t ccId, const Environment& environment) noexcept; - - //! Resets this CallConv struct into a defined state. - //! - //! It's recommended to reset the \ref CallConv struct in case you would - //! like create a custom calling convention as it prevents from using an - //! uninitialized data (CallConv doesn't have a constructor that would - //! initialize it, it's just a struct). - inline void reset() noexcept { - memset(this, 0, sizeof(*this)); - memset(_passedOrder, 0xFF, sizeof(_passedOrder)); - } - - //! \} - - //! \name Accessors - //! \{ - - //! Returns the calling convention id, see `Id`. - inline uint32_t id() const noexcept { return _id; } - //! Sets the calling convention id, see `Id`. - inline void setId(uint32_t id) noexcept { _id = uint8_t(id); } - - //! Returns the calling function architecture id. - inline uint32_t arch() const noexcept { return _arch; } - //! Sets the calling function architecture id. - inline void setArch(uint32_t arch) noexcept { _arch = uint8_t(arch); } - - //! Returns the strategy used to assign registers to arguments, see `Strategy`. - inline uint32_t strategy() const noexcept { return _strategy; } - //! Sets the strategy used to assign registers to arguments, see `Strategy`. - inline void setStrategy(uint32_t strategy) noexcept { _strategy = uint8_t(strategy); } - - //! Tests whether the calling convention has the given `flag` set. - inline bool hasFlag(uint32_t flag) const noexcept { return (uint32_t(_flags) & flag) != 0; } - //! Returns the calling convention flags, see `Flags`. - inline uint32_t flags() const noexcept { return _flags; } - //! Adds the calling convention flags, see `Flags`. - inline void setFlags(uint32_t flag) noexcept { _flags = uint8_t(flag); }; - //! Adds the calling convention flags, see `Flags`. - inline void addFlags(uint32_t flags) noexcept { _flags = uint8_t(_flags | flags); }; - - //! Tests whether this calling convention specifies 'RedZone'. - inline bool hasRedZone() const noexcept { return _redZoneSize != 0; } - //! Tests whether this calling convention specifies 'SpillZone'. - inline bool hasSpillZone() const noexcept { return _spillZoneSize != 0; } - - //! Returns size of 'RedZone'. - inline uint32_t redZoneSize() const noexcept { return _redZoneSize; } - //! Returns size of 'SpillZone'. - inline uint32_t spillZoneSize() const noexcept { return _spillZoneSize; } - - //! Sets size of 'RedZone'. - inline void setRedZoneSize(uint32_t size) noexcept { _redZoneSize = uint8_t(size); } - //! Sets size of 'SpillZone'. - inline void setSpillZoneSize(uint32_t size) noexcept { _spillZoneSize = uint8_t(size); } - - //! Returns a natural stack alignment. - inline uint32_t naturalStackAlignment() const noexcept { return _naturalStackAlignment; } - //! Sets a natural stack alignment. - //! - //! This function can be used to override the default stack alignment in case - //! that you know that it's alignment is different. For example it allows to - //! implement custom calling conventions that guarantee higher stack alignment. - inline void setNaturalStackAlignment(uint32_t value) noexcept { _naturalStackAlignment = uint8_t(value); } - - //! Returns the order of passed registers of the given `group`, see \ref BaseReg::RegGroup. - inline const uint8_t* passedOrder(uint32_t group) const noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - return _passedOrder[group].id; - } - - //! Returns the mask of passed registers of the given `group`, see \ref BaseReg::RegGroup. - inline uint32_t passedRegs(uint32_t group) const noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - return _passedRegs[group]; - } - - inline void _setPassedPacked(uint32_t group, uint32_t p0, uint32_t p1, uint32_t p2, uint32_t p3) noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - - _passedOrder[group].packed[0] = p0; - _passedOrder[group].packed[1] = p1; - _passedOrder[group].packed[2] = p2; - _passedOrder[group].packed[3] = p3; - } - - //! Resets the order and mask of passed registers. - inline void setPassedToNone(uint32_t group) noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - - _setPassedPacked(group, 0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu); - _passedRegs[group] = 0u; - } - - //! Sets the order and mask of passed registers. - inline void setPassedOrder(uint32_t group, uint32_t a0, uint32_t a1 = 0xFF, uint32_t a2 = 0xFF, uint32_t a3 = 0xFF, uint32_t a4 = 0xFF, uint32_t a5 = 0xFF, uint32_t a6 = 0xFF, uint32_t a7 = 0xFF) noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - - // NOTE: This should always be called with all arguments known at compile time, - // so even if it looks scary it should be translated into few instructions. - _setPassedPacked(group, Support::bytepack32_4x8(a0, a1, a2, a3), - Support::bytepack32_4x8(a4, a5, a6, a7), - 0xFFFFFFFFu, - 0xFFFFFFFFu); - - _passedRegs[group] = (a0 != 0xFF ? 1u << a0 : 0u) | - (a1 != 0xFF ? 1u << a1 : 0u) | - (a2 != 0xFF ? 1u << a2 : 0u) | - (a3 != 0xFF ? 1u << a3 : 0u) | - (a4 != 0xFF ? 1u << a4 : 0u) | - (a5 != 0xFF ? 1u << a5 : 0u) | - (a6 != 0xFF ? 1u << a6 : 0u) | - (a7 != 0xFF ? 1u << a7 : 0u) ; - } - - //! Returns preserved register mask of the given `group`, see \ref BaseReg::RegGroup. - inline uint32_t preservedRegs(uint32_t group) const noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - return _preservedRegs[group]; - } - - //! Sets preserved register mask of the given `group`, see \ref BaseReg::RegGroup. - inline void setPreservedRegs(uint32_t group, uint32_t regs) noexcept { - ASMJIT_ASSERT(group < BaseReg::kGroupVirt); - _preservedRegs[group] = regs; - } - - //! \} -}; - -//! \} - -ASMJIT_END_NAMESPACE - -#endif // ASMJIT_CORE_CALLCONV_H_INCLUDED |