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https://github.com/c64scene-ar/llvm-6502.git
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ac226bbf45
Summary: This patch adds explicit calling convention types for the Win64 and System V/x86-64 ABIs. This allows code to override the default, and use the Win64 convention on a target that wants to use SysV (and vice-versa). This is needed to implement the `ms_abi` and `sysv_abi` GNU attributes. Reviewers: CC: git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186144 91177308-0d34-0410-b5e6-96231b3b80d8
139 lines
5.2 KiB
C++
139 lines
5.2 KiB
C++
//===-- llvm/CallingConv.h - LLVM Calling Conventions -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines LLVM's set of calling conventions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_CALLINGCONV_H
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#define LLVM_IR_CALLINGCONV_H
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namespace llvm {
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/// CallingConv Namespace - This namespace contains an enum with a value for
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/// the well-known calling conventions.
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///
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namespace CallingConv {
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/// A set of enums which specify the assigned numeric values for known llvm
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/// calling conventions.
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/// @brief LLVM Calling Convention Representation
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enum ID {
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/// C - The default llvm calling convention, compatible with C. This
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/// convention is the only calling convention that supports varargs calls.
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/// As with typical C calling conventions, the callee/caller have to
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/// tolerate certain amounts of prototype mismatch.
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C = 0,
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// Generic LLVM calling conventions. None of these calling conventions
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// support varargs calls, and all assume that the caller and callee
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// prototype exactly match.
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/// Fast - This calling convention attempts to make calls as fast as
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/// possible (e.g. by passing things in registers).
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Fast = 8,
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// Cold - This calling convention attempts to make code in the caller as
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// efficient as possible under the assumption that the call is not commonly
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// executed. As such, these calls often preserve all registers so that the
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// call does not break any live ranges in the caller side.
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Cold = 9,
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// GHC - Calling convention used by the Glasgow Haskell Compiler (GHC).
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GHC = 10,
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// HiPE - Calling convention used by the High-Performance Erlang Compiler
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// (HiPE).
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HiPE = 11,
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// Target - This is the start of the target-specific calling conventions,
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// e.g. fastcall and thiscall on X86.
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FirstTargetCC = 64,
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/// X86_StdCall - stdcall is the calling conventions mostly used by the
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/// Win32 API. It is basically the same as the C convention with the
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/// difference in that the callee is responsible for popping the arguments
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/// from the stack.
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X86_StdCall = 64,
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/// X86_FastCall - 'fast' analog of X86_StdCall. Passes first two arguments
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/// in ECX:EDX registers, others - via stack. Callee is responsible for
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/// stack cleaning.
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X86_FastCall = 65,
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/// ARM_APCS - ARM Procedure Calling Standard calling convention (obsolete,
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/// but still used on some targets).
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ARM_APCS = 66,
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/// ARM_AAPCS - ARM Architecture Procedure Calling Standard calling
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/// convention (aka EABI). Soft float variant.
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ARM_AAPCS = 67,
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/// ARM_AAPCS_VFP - Same as ARM_AAPCS, but uses hard floating point ABI.
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ARM_AAPCS_VFP = 68,
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/// MSP430_INTR - Calling convention used for MSP430 interrupt routines.
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MSP430_INTR = 69,
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/// X86_ThisCall - Similar to X86_StdCall. Passes first argument in ECX,
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/// others via stack. Callee is responsible for stack cleaning. MSVC uses
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/// this by default for methods in its ABI.
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X86_ThisCall = 70,
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/// PTX_Kernel - Call to a PTX kernel.
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/// Passes all arguments in parameter space.
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PTX_Kernel = 71,
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/// PTX_Device - Call to a PTX device function.
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/// Passes all arguments in register or parameter space.
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PTX_Device = 72,
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/// MBLAZE_INTR - Calling convention used for MBlaze interrupt routines.
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MBLAZE_INTR = 73,
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/// MBLAZE_INTR - Calling convention used for MBlaze interrupt support
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/// routines (i.e. GCC's save_volatiles attribute).
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MBLAZE_SVOL = 74,
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/// SPIR_FUNC - Calling convention for SPIR non-kernel device functions.
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/// No lowering or expansion of arguments.
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/// Structures are passed as a pointer to a struct with the byval attribute.
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/// Functions can only call SPIR_FUNC and SPIR_KERNEL functions.
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/// Functions can only have zero or one return values.
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/// Variable arguments are not allowed, except for printf.
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/// How arguments/return values are lowered are not specified.
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/// Functions are only visible to the devices.
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SPIR_FUNC = 75,
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/// SPIR_KERNEL - Calling convention for SPIR kernel functions.
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/// Inherits the restrictions of SPIR_FUNC, except
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/// Cannot have non-void return values.
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/// Cannot have variable arguments.
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/// Can also be called by the host.
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/// Is externally visible.
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SPIR_KERNEL = 76,
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/// Intel_OCL_BI - Calling conventions for Intel OpenCL built-ins
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Intel_OCL_BI = 77,
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/// \brief The C convention as specified in the x86-64 supplement to the
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/// System V ABI, used on most non-Windows systems.
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X86_64_SysV = 78,
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/// \brief The C convention as implemented on Windows/x86-64. This
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/// convention differs from the more common \c X86_64_SysV convention
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/// in a number of ways, most notably in that XMM registers used to pass
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/// arguments are shadowed by GPRs, and vice versa.
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X86_64_Win64 = 79
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};
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} // End CallingConv namespace
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} // End llvm namespace
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#endif
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