include/llvm/CallingConv.h

   1 //===-- llvm/CallingConv.h - LLVM Calling Conventions -----------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines LLVM's set of calling conventions.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_CALLINGCONV_H
  15 #define LLVM_CALLINGCONV_H
  16
  17 namespace llvm {
  18
  19 /// CallingConv Namespace - This namespace contains an enum with a value for
  20 /// the well-known calling conventions.
  21 ///
  22 namespace CallingConv {
  23   /// A set of enums which specify the assigned numeric values for known llvm
  24   /// calling conventions.
  25   /// @brief LLVM Calling Convention Representation
  26   enum ID {
  27     /// C - The default llvm calling convention, compatible with C.  This
  28     /// convention is the only calling convention that supports varargs calls.
  29     /// As with typical C calling conventions, the callee/caller have to
  30     /// tolerate certain amounts of prototype mismatch.
  31     C = 0,
  32
  33     // Generic LLVM calling conventions.  None of these calling conventions
  34     // support varargs calls, and all assume that the caller and callee
  35     // prototype exactly match.
  36
  37     /// Fast - This calling convention attempts to make calls as fast as
  38     /// possible (e.g. by passing things in registers).
  39     Fast = 8,
  40
  41     // Cold - This calling convention attempts to make code in the caller as
  42     // efficient as possible under the assumption that the call is not commonly
  43     // executed.  As such, these calls often preserve all registers so that the
  44     // call does not break any live ranges in the caller side.
  45     Cold = 9,
  46
  47     // GHC - Calling convention used by the Glasgow Haskell Compiler (GHC).
  48     GHC = 10,
  49
  50     // Target - This is the start of the target-specific calling conventions,
  51     // e.g. fastcall and thiscall on X86.
  52     FirstTargetCC = 64,
  53
  54     /// X86_StdCall - stdcall is the calling conventions mostly used by the
  55     /// Win32 API. It is basically the same as the C convention with the
  56     /// difference in that the callee is responsible for popping the arguments
  57     /// from the stack.
  58     X86_StdCall = 64,
  59
  60     /// X86_FastCall - 'fast' analog of X86_StdCall. Passes first two arguments
  61     /// in ECX:EDX registers, others - via stack. Callee is responsible for
  62     /// stack cleaning.
  63     X86_FastCall = 65,
  64
  65     /// ARM_APCS - ARM Procedure Calling Standard calling convention (obsolete,
  66     /// but still used on some targets).
  67     ARM_APCS = 66,
  68
  69     /// ARM_AAPCS - ARM Architecture Procedure Calling Standard calling
  70     /// convention (aka EABI). Soft float variant.
  71     ARM_AAPCS = 67,
  72
  73     /// ARM_AAPCS_VFP - Same as ARM_AAPCS, but uses hard floating point ABI.
  74     ARM_AAPCS_VFP = 68,
  75
  76     /// MSP430_INTR - Calling convention used for MSP430 interrupt routines.
  77     MSP430_INTR = 69,
  78
  79     /// X86_ThisCall - Similar to X86_StdCall. Passes first argument in ECX,
  80     /// others via stack. Callee is responsible for stack cleaning. MSVC uses
  81     /// this by default for methods in its ABI.
  82     X86_ThisCall = 70,
  83
  84     /// PTX_Kernel - Call to a PTX kernel.
  85     /// Passes all arguments in parameter space.
  86     PTX_Kernel = 71,
  87
  88     /// PTX_Device - Call to a PTX device function.
  89     /// Passes all arguments in register or parameter space.
  90     PTX_Device = 72,
  91
  92     /// MBLAZE_INTR - Calling convention used for MBlaze interrupt routines.
  93     MBLAZE_INTR = 73,
  94
  95     /// MBLAZE_INTR - Calling convention used for MBlaze interrupt support
  96     /// routines (i.e. GCC's save_volatiles attribute).
  97     MBLAZE_SVOL = 74
  98   };
  99 } // End CallingConv namespace
 100
 101 } // End llvm namespace
 102
 103 #endif