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https://github.com/c64scene-ar/llvm-6502.git
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f37812e906
This is far from complete, but it is enough to make it possible to write test cases using i64 arguments. Missing features: - Floating point arguments. - Receiving arguments on the stack. - Calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178523 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
2.1 KiB
TableGen
57 lines
2.1 KiB
TableGen
//===-- SparcCallingConv.td - Calling Conventions Sparc ----*- tablegen -*-===//
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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 describes the calling conventions for the Sparc architectures.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Return Value Calling Conventions
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//===----------------------------------------------------------------------===//
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// Sparc 32-bit C return-value convention.
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def RetCC_Sparc32 : CallingConv<[
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CCIfType<[i32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
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CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>,
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CCIfType<[f64], CCAssignToReg<[D0, D1]>>
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]>;
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// Sparc 64-bit C return-value convention.
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def RetCC_Sparc64 : CallingConv<[
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CCIfType<[i32], CCPromoteToType<i64>>,
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CCIfType<[i64], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
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CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>,
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CCIfType<[f64], CCAssignToReg<[D0, D1]>>
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]>;
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// Sparc 32-bit C Calling convention.
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def CC_Sparc32 : CallingConv<[
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//Custom assign SRet to [sp+64].
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CCIfSRet<CCCustom<"CC_Sparc_Assign_SRet">>,
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// i32 f32 arguments get passed in integer registers if there is space.
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CCIfType<[i32, f32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
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// f64 arguments are split and passed through registers or through stack.
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CCIfType<[f64], CCCustom<"CC_Sparc_Assign_f64">>,
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// Alternatively, they are assigned to the stack in 4-byte aligned units.
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CCAssignToStack<4, 4>
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]>;
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// Sparc 64-bit C Calling convention.
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def CC_Sparc64 : CallingConv<[
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// All integers are promoted to i64 by the caller.
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CCIfType<[i32], CCPromoteToType<i64>>,
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// Integer arguments get passed in integer registers if there is space.
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CCIfType<[i64], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
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// FIXME: Floating point arguments.
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// Alternatively, they are assigned to the stack in 8-byte aligned units.
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CCAssignToStack<8, 8>
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]>;
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