p.To.Type = obj.TYPE_REG
		p.To.Reg = regEntryTmp0
		if ctxt.Arch.Family == sys.I386 {
			p.As = AMOVL
		}

		// TESTQ regEntryTmp0, regEntryTmp0
		p = obj.Appendp(p, newprog)
		p.As = ATESTQ
		p.From.Type = obj.TYPE_REG
		p.From.Reg = regEntryTmp0
		p.To.Type = obj.TYPE_REG
		p.To.Reg = regEntryTmp0
		if ctxt.Arch.Family == sys.I386 {
			p.As = ATESTL
		}

var compatFreeBSD32 bool // 386 emulation on amd64

func probeRoutingStack() (int, map[int]*wireFormat) {
	var p uintptr
	wordSize := int(unsafe.Sizeof(p))
	align := wordSize
	// In the case of kern.supported_archs="amd64 i386", we need
	// to know the underlying kernel's architecture because the
	// alignment for routing facilities are set at the build time
	// of the kernel.
	conf, _ := syscall.Sysctl("kern.conftxt")

			// becomes
			//     mov %gs:off(%ecx), %eax // on i386
			//     mov %fs:off(%rcx), %rax // on amd64
			// which assumes that the correct TLS offset has been loaded into CX (today
			// there is only one TLS variable -- g -- so this is OK). When not building for
			// a shared library the instruction it becomes
			//     mov 0x0(%ecx), %eax // on i386
			//     mov 0x0(%rcx), %rax // on amd64

    def component = BaseComponentFixtures.createNode(NativeLibrarySpec, TestNativeComponentSpec, id)

    def platform1 = Stub(NativePlatform) {
        getArchitecture() >> Architectures.forInput("i386")
    }
    def buildType1 = Stub(BuildType) {
        getName() >> "BuildType1"
    }
    def resolver = Mock(NativeDependencyResolver)

    def "uses resolver to resolve lib to dependency"() {

            argsFor(platformToolChain.assembler) == compilerArg
            argsFor(platformToolChain.staticLibArchiver) == []
        })

        where:
        arch     | linkerArg | compilerArg
        "i386"   | ["-m32"]  | ["-m32"]
        "x86_64" | ["-m64"]  | ["-m64"]
    }

    @Requires(UnitTestPreconditions.MacOs)
    def "supplies args for supported architecture for macOS platforms"() {

// the one in glibc. The glibc source code is:
// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/i386/libc_sigaction.c;h=0665b41bbcd0986f0b33bf19a7ecbcedf9961d0a#l59
// The code that cares about the precise instructions used is:
// https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libgcc/config/i386/linux-unwind.h;h=5486223d60272c73d5103b29ae592d2ee998e1cf#l136
//

        app.writeSources(file("src/main"))
        buildFile << """
    apply plugin: 'cpp'
    apply plugin: 'visual-studio'

    model {
        platforms {
            win32 {
                architecture "i386"
            }
        }
        buildTypes {
            debug
            release
        }
        components {
            main(NativeExecutableSpec)
        }
    }
"""
    }

			return true
		}
		return t.linkShared || (t.HeadType == objabi.Haix && t.LinkMode == LinkExternal)
	}
}

//
// Processor functions
//

func (t *Target) Is386() bool {
	return t.Arch.Family == sys.I386
}

func (t *Target) IsARM() bool {
	return t.Arch.Family == sys.ARM
}

func (t *Target) IsARM64() bool {
	return t.Arch.Family == sys.ARM64
}

func (t *Target) IsAMD64() bool {

            model {
                components {
                    main(NativeExecutableSpec)
                }
                platforms {
                    win32 {
                        architecture "i386"
                    }
                    x64 {
                        architecture "amd64"
                    }
                }
                buildTypes {
                    debug

	"path/filepath"
	"strconv"
	"strings"
	"syscall"
	"testing"
)

// TestDeathSignalSetuid verifies that a command run with a different UID still
// receives PDeathsig; it is a regression test for https://go.dev/issue/9686.
func TestDeathSignalSetuid(t *testing.T) {
	if testing.Short() {
		t.Skipf("skipping test that copies its binary into temp dir")
	}

	// Copy the test binary to a location that another user can read/execute