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7155702f2d
When using -linkshared, the external linker on ppc64x cannot always handle the direct branch to syscall.Syscall and similar similar functions when the offset is too far. Instead it should be done as a BL which can then be called through a procedure linkage table entry. This change removes functions Syscall, Syscall6, RawSyscall, RawSyscall6 from asm_linux_ppc64x.s and instead creates Go functions which call their corresponding functions in the syscall package. As Go functions, they can be inlined with the help of CL 147361. Fixes golang/go#16662 Change-Id: Ibd2b6ec15b0781c3d7db25e249a3ffc9e1c2884b Reviewed-on: https://go-review.googlesource.com/c/146518 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
45 lines
921 B
ArmAsm
45 lines
921 B
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 linux
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// +build ppc64 ppc64le
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// +build !gccgo
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#include "textflag.h"
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//
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// System calls for ppc64, Linux
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//
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// Just jump to package syscall's implementation for all these functions.
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// The runtime may know about them.
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TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
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BL runtime·entersyscall(SB)
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MOVD a1+8(FP), R3
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MOVD a2+16(FP), R4
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MOVD a3+24(FP), R5
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MOVD R0, R6
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MOVD R0, R7
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MOVD R0, R8
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MOVD trap+0(FP), R9 // syscall entry
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SYSCALL R9
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MOVD R3, r1+32(FP)
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MOVD R4, r2+40(FP)
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
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MOVD a1+8(FP), R3
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MOVD a2+16(FP), R4
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MOVD a3+24(FP), R5
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MOVD R0, R6
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MOVD R0, R7
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MOVD R0, R8
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MOVD trap+0(FP), R9 // syscall entry
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SYSCALL R9
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MOVD R3, r1+32(FP)
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MOVD R4, r2+40(FP)
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RET
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