not be referenced from Go code; static functions are permitted.

See $GOROOT/cmd/cgo/internal/teststdio and $GOROOT/misc/cgo/gmp for examples. See
"C? Go? Cgo!" for an introduction to using cgo:
https://golang.org/doc/articles/c_go_cgo.html.

CFLAGS, CPPFLAGS, CXXFLAGS, FFLAGS and LDFLAGS may be defined with pseudo
#cgo directives within these comments to tweak the behavior of the C, C++

	ADD	$8192, R1, R2         // ec21200000d9
	ADD	$32768, R1            // c21800008000
	ADD	$32768, R1, R2        // b9040021c22800008000
	ADDC	R1, R2                // b9ea1022
	ADDC	$1, R1, R2            // ec21000100db
	ADDC	$-1, R1, R2           // ec21ffff00db
	ADDC	R1, R2, R3            // b9ea1032
	ADDW	R1, R2                // 1a21
	ADDW	R1, R2, R3            // b9f81032
	ADDW	$8192, R1             // a71a2000

language version 1.17, in October 2021, before the introduction of generics.
It is provided for historical interest.
The current reference manual can be found <a href="/doc/go_spec.html">here</a>.
For more information and other documents, see <a href="/">go.dev</a>.
</p>

<p>
Go is a general-purpose language designed with systems programming

	ADC	R0->28, R1           // 401ea1e0
	ADC	R0@>28, R1           // 601ea1e0
	ADC.S	R0<<28, R1           // 001eb1e0
	ADC.S	R0>>28, R1           // 201eb1e0
	ADC.S	R0->28, R1           // 401eb1e0
	ADC.S	R0@>28, R1           // 601eb1e0
	ADC	R0<<R1, R2, R3       // 1031a2e0
	ADC	R0>>R1, R2, R3       // 3031a2e0
	ADC	R0->R1, R2, R3       // 5031a2e0
	ADC	R0@>R1, R2, R3       // 7031a2e0

_test
_testmain.go

/VERSION.cache
/bin/
/build.out
/doc/articles/wiki/*.bin
/goinstall.log
/last-change
/misc/cgo/life/run.out
/misc/cgo/stdio/run.out
/misc/cgo/testso/main
/pkg/
/src/*.*/
/src/cmd/cgo/zdefaultcc.go
/src/cmd/dist/dist
/src/cmd/go/internal/cfg/zdefaultcc.go
/src/cmd/internal/objabi/zbootstrap.go
/src/go/build/zcgo.go
/src/go/doc/headscan
/src/internal/buildcfg/zbootstrap.go

#include "../../../../../runtime/textflag.h"

TEXT asmtest(SB),DUPOK|NOSPLIT,$-8

	AND $(1<<63), R1                           // AND $-9223372036854775808, R1     // 21004192
	ADCW ZR, R8, R10                           // 0a011f1a
	ADC R0, R2, R12                            // 4c00009a
	ADCSW R9, R21, R6                          // a602093a
	ADCS R23, R22, R22                         // d60217ba
	ADDW R5.UXTH, R8, R9                       // 0921250b

	CLS	R1, R2
	SBC	$0, R1                           // 21001fda
	SBCW	$0, R1                           // 21001f5a
	SBCS	$0, R1                           // 21001ffa
	SBCSW	$0, R1                           // 21001f7a
	ADC	$0, R1                           // 21001f9a
	ADCW	$0, R1                           // 21001f1a
	ADCS	$0, R1                           // 21001fba
	ADCSW	$0, R1                           // 21001f3a

enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and
[permitted by the Go 1 compatibility rules](/doc/go1compat).
Even so, Go provides a mechanism called GODEBUG to
reduce the impact such changes have on Go developers
using newer toolchains to compile old code.

A GODEBUG setting is a `key=value` pair

	"Path":  "/doc/asm"
}-->

<h2 id="introduction">A Quick Guide to Go's Assembler</h2>

<p>
This document is a quick outline of the unusual form of assembly language used by the <code>gc</code> Go compiler.
The document is not comprehensive.
</p>

<p>
The assembler is based on the input style of the Plan 9 assemblers, which is documented in detail
<a href="https://9p.io/sys/doc/asm.html">elsewhere</a>.

	CMPB R3,R4,R4                   // 7c6423f8
	CMPEQB R3,R4,CR6                // 7f0321c0

	ADD R3, R4                      // 7c841a14
	ADD R3, R4, R5                  // 7ca41a14
	ADDC R3, R4                     // 7c841814
	ADDC R3, R4, R5                 // 7ca41814
	ADDCC R3, R4, R5                // 7ca41a15
	ADDE R3, R4                     // 7c841914
	ADDECC R3, R4                   // 7c841915