mirror of
https://github.com/golang/go
synced 2024-11-19 16:04:48 -07:00
519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
138 lines
2.9 KiB
ArmAsm
138 lines
2.9 KiB
ArmAsm
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ppc64 ppc64le
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/*
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* Apple still insists on underscore prefixes for C function names.
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*/
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#if defined(__APPLE__)
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#define EXT(s) _##s
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#else
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#define EXT(s) s
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#endif
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/*
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* void crosscall_ppc64(void (*fn)(void), void *g)
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*
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* Calling into the gc tool chain, where all registers are caller save.
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* Called from standard ppc64 C ABI, where r2, r14-r31, f14-f31 are
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* callee-save, so they must be saved explicitly.
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*/
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.globl EXT(crosscall_ppc64)
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EXT(crosscall_ppc64):
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// Start with standard C stack frame layout and linkage
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mflr %r0
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std %r0, 16(%r1) // Save LR in caller's frame
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std %r2, 24(%r1) // Save TOC in caller's frame
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bl saveregs
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stdu %r1, -296(%r1)
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// Set up Go ABI constant registers
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bl _cgo_reginit
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nop
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// Restore g pointer (r30 in Go ABI, which may have been clobbered by C)
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mr %r30, %r4
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// Call fn
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mr %r12, %r3
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mtctr %r3
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bctrl
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addi %r1, %r1, 296
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bl restoreregs
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ld %r2, 24(%r1)
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ld %r0, 16(%r1)
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mtlr %r0
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blr
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saveregs:
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// Save callee-save registers
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// O=-288; for R in %r{14..31}; do echo "\tstd\t$R, $O(%r1)"; ((O+=8)); done; for F in f{14..31}; do echo "\tstfd\t$F, $O(%r1)"; ((O+=8)); done
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std %r14, -288(%r1)
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std %r15, -280(%r1)
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std %r16, -272(%r1)
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std %r17, -264(%r1)
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std %r18, -256(%r1)
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std %r19, -248(%r1)
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std %r20, -240(%r1)
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std %r21, -232(%r1)
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std %r22, -224(%r1)
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std %r23, -216(%r1)
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std %r24, -208(%r1)
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std %r25, -200(%r1)
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std %r26, -192(%r1)
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std %r27, -184(%r1)
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std %r28, -176(%r1)
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std %r29, -168(%r1)
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std %r30, -160(%r1)
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std %r31, -152(%r1)
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stfd %f14, -144(%r1)
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stfd %f15, -136(%r1)
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stfd %f16, -128(%r1)
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stfd %f17, -120(%r1)
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stfd %f18, -112(%r1)
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stfd %f19, -104(%r1)
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stfd %f20, -96(%r1)
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stfd %f21, -88(%r1)
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stfd %f22, -80(%r1)
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stfd %f23, -72(%r1)
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stfd %f24, -64(%r1)
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stfd %f25, -56(%r1)
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stfd %f26, -48(%r1)
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stfd %f27, -40(%r1)
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stfd %f28, -32(%r1)
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stfd %f29, -24(%r1)
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stfd %f30, -16(%r1)
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stfd %f31, -8(%r1)
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blr
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restoreregs:
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// O=-288; for R in %r{14..31}; do echo "\tld\t$R, $O(%r1)"; ((O+=8)); done; for F in %f{14..31}; do echo "\tlfd\t$F, $O(%r1)"; ((O+=8)); done
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ld %r14, -288(%r1)
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ld %r15, -280(%r1)
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ld %r16, -272(%r1)
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ld %r17, -264(%r1)
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ld %r18, -256(%r1)
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ld %r19, -248(%r1)
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ld %r20, -240(%r1)
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ld %r21, -232(%r1)
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ld %r22, -224(%r1)
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ld %r23, -216(%r1)
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ld %r24, -208(%r1)
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ld %r25, -200(%r1)
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ld %r26, -192(%r1)
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ld %r27, -184(%r1)
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ld %r28, -176(%r1)
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ld %r29, -168(%r1)
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ld %r30, -160(%r1)
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ld %r31, -152(%r1)
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lfd %f14, -144(%r1)
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lfd %f15, -136(%r1)
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lfd %f16, -128(%r1)
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lfd %f17, -120(%r1)
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lfd %f18, -112(%r1)
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lfd %f19, -104(%r1)
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lfd %f20, -96(%r1)
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lfd %f21, -88(%r1)
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lfd %f22, -80(%r1)
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lfd %f23, -72(%r1)
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lfd %f24, -64(%r1)
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lfd %f25, -56(%r1)
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lfd %f26, -48(%r1)
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lfd %f27, -40(%r1)
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lfd %f28, -32(%r1)
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lfd %f29, -24(%r1)
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lfd %f30, -16(%r1)
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lfd %f31, -8(%r1)
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blr
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#ifdef __ELF__
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.section .note.GNU-stack,"",%progbits
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#endif
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