//			offset = second register
//
//	[reg, reg, reg-reg]
//		Register list for ARM, ARM64, 386/AMD64.
//		Encoding:
//			type = TYPE_REGLIST
//		On ARM:
//			offset = bit mask of registers in list; R0 is low bit.
//		On ARM64:
//			offset = register count (Q:size) | arrangement (opcode) | first register
//		On 386/AMD64:
//			reg = range low register

// environment might cause environment checks to behave erratically.
var origEnv = os.Environ()

// Builder reports the name of the builder running this test
// (for example, "linux-amd64" or "windows-386-gce").
// If the test is not running on the build infrastructure,
// Builder returns the empty string.
func Builder() string {
	return os.Getenv("GO_BUILDER_NAME")
}

func GetArchEnv() (key, val string, changed bool) {
	switch Goarch {
	case "arm":
		return "GOARM", GOARM, goARMChanged
	case "arm64":
		return "GOARM64", GOARM64, goARM64Changed
	case "386":
		return "GO386", GO386, go386Changed
	case "amd64":
		return "GOAMD64", GOAMD64, goAMD64Changed
	case "mips", "mipsle":
		return "GOMIPS", GOMIPS, goMIPSChanged
	case "mips64", "mips64le":

	unsafePoint       bool      // this op is an unsafe point, i.e. not safe for async preemption
	symEffect         SymEffect // effect this op has on symbol in aux
	scale             uint8     // amd64/386 indexed load scale
}

type inputInfo struct {
	idx  int     // index in Args array
	regs regMask // allowed input registers
}

type outputInfo struct {
	idx  int     // index in output tuple

              <goals>
                <goal>cmp</goal>
              </goals>
              <phase>verify</phase>
              <configuration>
                <parameter>
                  <!-- baseline is 3.8.6 for Maven 4 -->
                  <oldVersionPattern>${maven.baseline}</oldVersionPattern>
                  <breakBuildOnBinaryIncompatibleModifications>true</breakBuildOnBinaryIncompatibleModifications>

	# it encounters while processing the input
	echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
	awk '
		$1 != "#define" || $2 ~ /\(/ || $3 == "" {next}

		$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next}  # 386 registers
		$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
		$2 ~ /^(SCM_SRCRT)$/ {next}
		$2 ~ /^(MAP_FAILED)$/ {next}
		$2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.

	}
}

func prepareCgroupFD(t *testing.T) (int, string) {
	t.Helper()

	const O_PATH = 0x200000 // Same for all architectures, but for some reason not defined in syscall for 386||amd64.

	// Requires cgroup v2.
	const prefix = "/sys/fs/cgroup"
	selfCg, err := os.ReadFile("/proc/self/cgroup")
	if err != nil {
		if os.IsNotExist(err) || os.IsPermission(err) {
			t.Skip(err)
		}

000003f0  5b c0 e8 b4 42 eb ee 83  c2 ae 0d 28 99 48 46 a9  |[...B......(.HF.|
00000400  64 38 60 59 c2 dc 5c 7b  16 03 03 00 14 78 72 cf  |d8`Y..\{.....xr.|
00000410  ac 5d 53 7e 73 b1 6e e2  0a 8e 12 33 be 03 86 6a  |.]S~s.n....3...j|
00000420  ce                                                |.|
>>> Flow 9 (client to server)
00000000  16 03 03 02 69 33 a1 bb  7d ff 23 ba ad dc a0 1e  |....i3..}.#.....|

// one of darwin, freebsd, linux, and so on.
// To view possible combinations of GOOS and GOARCH, run "go tool dist list".
const GOOS string = goos.GOOS

// GOARCH is the running program's architecture target:
// one of 386, amd64, arm, s390x, and so on.

// license that can be found in the LICENSE file.

#include "go_asm.h"
#include "go_tls.h"
#include "funcdata.h"
#include "textflag.h"

// _rt0_386 is common startup code for most 386 systems when using
// internal linking. This is the entry point for the program from the
// kernel for an ordinary -buildmode=exe program. The stack holds the
// number of arguments and the C-style argv.