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go/test/fixedbugs/issue19507.dir/div_arm.s

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runtime: restore arm assembly stubs for div/mod These are used by DIV[U] and MOD[U] assembly instructions. Add a test in the stdlib so we actually exercise linking to these routines. Update #19507 Change-Id: I0d8e19a53e3744abc0c661ea95486f94ec67585e Reviewed-on: https://go-review.googlesource.com/45703 Reviewed-by: Cherry Zhang <cherryyz@google.com>
2017-06-14 12:36:36 -06:00
// Copyright 2017 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.
test: fix ABI mismatch in fixedbugs/issue19507 Because run.go doesn't pass the package being compiled to the compiler via the -p flag, it can't match up the main·f symbol from the assembler with the "func f" stub in Go, so it doesn't produce the correct assembly stub. Fix this by removing the package prefix from the assembly definition. Alternatively, we could make run.go pass -p to the compiler, but it's nicer to remove these package prefixes anyway. Should fix the linux-arm builder, which was broken by the introduction of function ABIs in CL 147160. Updates #27539. Change-Id: Id62b7701e1108a21a5ad48ffdb5dad4356c273a6 Reviewed-on: https://go-review.googlesource.com/c/149483 Run-TryBot: Austin Clements <austin@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2018-11-13 16:32:55 -07:00
TEXT ·f(SB),0,$0-8
runtime: restore arm assembly stubs for div/mod These are used by DIV[U] and MOD[U] assembly instructions. Add a test in the stdlib so we actually exercise linking to these routines. Update #19507 Change-Id: I0d8e19a53e3744abc0c661ea95486f94ec67585e Reviewed-on: https://go-review.googlesource.com/45703 Reviewed-by: Cherry Zhang <cherryyz@google.com>
2017-06-14 12:36:36 -06:00
MOVW x+0(FP), R1
MOVW x+4(FP), R2
DIVU R1, R2
DIV R1, R2
MODU R1, R2
MOD R1, R2
RET
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