mirror of https://go.googlesource.com/go
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
// Copyright 2019 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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/*
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* On AIX, call to _cgo_topofstack and Go main are forced to be a longcall.
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* Without it, ld might add trampolines in the middle of .text section
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* to reach these functions which are normally declared in runtime package.
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*/
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extern int __attribute__((longcall)) __cgo_topofstack(void);
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extern int __attribute__((longcall)) runtime_rt0_go(int argc, char **argv);
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extern void __attribute__((longcall)) _rt0_ppc64_aix_lib(void);
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int _cgo_topofstack(void) {
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return __cgo_topofstack();
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}
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int main(int argc, char **argv) {
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return runtime_rt0_go(argc, argv);
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}
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static void libinit(void) __attribute__ ((constructor));
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/*
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* libinit aims to replace .init_array section which isn't available on aix.
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* Using __attribute__ ((constructor)) let gcc handles this instead of
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* adding special code in cmd/link.
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* However, it will be called for every Go programs which has cgo.
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* Inside _rt0_ppc64_aix_lib(), runtime.isarchive is checked in order
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* to know if this program is a c-archive or a simple cgo program.
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* If it's not set, _rt0_ppc64_ax_lib() returns directly.
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*/
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static void libinit() {
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_rt0_ppc64_aix_lib();
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}
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