golang abi_generic 代码
文件路径：/src/internal/abi/abi_generic.go
/ Copyright 2020 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/go:build !goexperiment.regabiargs && !amd64 && !arm64 && !ppc64 && !ppc64le
package abi
const (
/ ABI-related constants.
/
/ In the generic case, these are all zero
/ which lets them gracefully degrade to ABI0.
/ IntArgRegs is the number of registers dedicated
/ to passing integer argument values. Result registers are identical
/ to argument registers, so this number is used for those too.
IntArgRegs = 0
/ FloatArgRegs is the number of registers dedicated
/ to passing floating-point argument values. Result registers are
/ identical to argument registers, so this number is used for
/ those too.
FloatArgRegs = 0
/ EffectiveFloatRegSize describes the width of floating point
/ registers on the current platform from the ABI's perspective.
/
/ Since Go only supports 32-bit and 64-bit floating point primitives,
/ this number should be either 0, 4, or 8. 0 indicates no floating
/ point registers for the ABI or that floating point values will be
/ passed via the softfloat ABI.
/
/ For platforms that support larger floating point register widths,
/ such as x87's 80-bit "registers" (not that we support x87 currently),
/ use 8.
EffectiveFloatRegSize = 0
)