// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build linux && (mips64 || mips64le)

package runtime

const (
	// vdsoArrayMax is the byte-size of a maximally sized array on this architecture.
	// See cmd/compile/internal/mips64/galign.go arch.MAXWIDTH initialization.
	vdsoArrayMax = 1<<50 - 1
)

// see man 7 vdso : mips

	// is shorter than 1024 bits, it cannot distinguish max64+ulp64/2-1 and max64+ulp64/2.
	float64(max64 + ulp64/2 - two1024/two256), // ok
	float64(max64 + ulp64/2 - 1),              // ok
	float64(max64 + ulp64/2),                  // ERROR "constant 1\.79769e\+308 overflows float64|cannot convert.*to type float64"

	float64(-max64 - ulp64/2 + two1024/two256), // ok
	float64(-max64 - ulp64/2 + 1),              // ok

	// mips/hardfloat:"SQRTD" mips/softfloat:-"SQRTD"
	// mips64/hardfloat:"SQRTD" mips64/softfloat:-"SQRTD"
	// wasm:"F64Sqrt"
	// ppc64x:"FSQRT"
	// riscv64: "FSQRTD"
	return math.Sqrt(x)
}

func sqrt32(x float32) float32 {
	// amd64:"SQRTSS"
	// 386/sse2:"SQRTSS" 386/softfloat:-"SQRTS"
	// arm64:"FSQRTS"
	// arm/7:"SQRTF"
	// mips/hardfloat:"SQRTF" mips/softfloat:-"SQRTF"
	// mips64/hardfloat:"SQRTF" mips64/softfloat:-"SQRTF"

	// s390x:"ADDE","ADDC\t[$]-1,"
	// mips64:"ADDV","SGTU"
	// riscv64: "ADD","SLTU"
	return bits.Add(x, 7, ci)
}

func AddZ(x, y uint) (r, co uint) {
	// arm64:"ADDS","ADC",-"ADCS",-"ADD\t",-"CMP"
	// amd64:"ADDQ","SBBQ","NEGQ",-"NEGL",-"ADCQ"
	// loong64: "ADDV", "SGTU"
	// ppc64x: "ADDC", -"ADDE", "ADDZE"
	// s390x:"ADDC",-"ADDC\t[$]-1,"
	// mips64:"ADDV","SGTU"
	// riscv64: "ADD","SLTU"

// Copyright 2015 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 linux && (mips64 || mips64le) && gc

#include "textflag.h"

//
// System calls for mips64, Linux
//

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT ·Syscall(SB),NOSPLIT,$0-56
	JMP	syscall·Syscall(SB)

go list -f '{{context.ToolTags}}'
stdout 'arm.5 arm.6'

env GOARCH=mips
env GOMIPS=hardfloat
go list -f '{{context.ToolTags}}'
stdout 'mips.hardfloat'

env GOARCH=mips64
env GOMIPS=hardfloat
go list -f '{{context.ToolTags}}'
stdout 'mips64.hardfloat'

env GOARCH=ppc64
env GOPPC64=power9
go list -f '{{context.ToolTags}}'
stdout 'ppc64.power8 ppc64.power9'

env GOARCH=ppc64
env GOPPC64=power10

	{"ios", "amd64"},
	{"ios", "arm64"},
	{"js", "wasm"},
	{"linux", "386"},
	{"linux", "amd64"},
	{"linux", "arm"},
	{"linux", "arm64"},
	{"linux", "loong64"},
	{"linux", "mips"},
	{"linux", "mips64"},
	{"linux", "mips64le"},
	{"linux", "mipsle"},
	{"linux", "ppc64"},
	{"linux", "ppc64le"},
	{"linux", "riscv64"},
	{"linux", "s390x"},
	{"linux", "sparc64"},
	{"netbsd", "386"},
	{"netbsd", "amd64"},

		arch, theArch = arm.Init()
	case "arm64":
		arch, theArch = arm64.Init()
	case "loong64":
		arch, theArch = loong64.Init()
	case "mips", "mipsle":
		arch, theArch = mips.Init()
	case "mips64", "mips64le":
		arch, theArch = mips64.Init()
	case "ppc64", "ppc64le":
		arch, theArch = ppc64.Init()
	case "riscv64":
		arch, theArch = riscv64.Init()
	case "s390x":
		arch, theArch = s390x.Init()
	case "wasm":

// Copyright 2019 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 linux && !arm && !arm64 && !mips64 && !mips64le && !ppc64 && !ppc64le && !s390x

package cpu

			gohostarch = "ppc64"
		case gohostos == "openbsd":
			if strings.Contains(run("", CheckExit, "uname", "-p"), "mips64") {
				gohostarch = "mips64"
			}
		default:
			fatalf("unknown architecture: %s", out)
		}
	}

	if gohostarch == "arm" || gohostarch == "mips64" || gohostarch == "mips64le" {
		maxbg = min(maxbg, runtime.NumCPU())
	}