7039cebfa8
2019-05-22 Kwok Cheung Yeung <kcy@codesourcery.com>
Andrew Stubbs <amd@codesourcery.com>
gcc/
* config.gcc (gcc_cv_initfini_array): Set for AMD GCN.
* config/gcn/gcn-run.c (init_array_kernel, fini_array_kernel): New.
(kernel): Rename to...
(main_kernel): ... this.
(load_image): Load _init_array and _fini_array kernels.
(run): Add argument for kernel to run.
(main): Run init_array_kernel before main_kernel, and
fini_array_kernel after.
* config/gcn/gcn.c (gcn_handle_amdgpu_hsa_kernel_attribute): Allow
amdgpu_hsa_kernel attribute on functions.
(gcn_disable_constructors): Delete.
(TARGET_ASM_CONSTRUCTOR, TARGET_ASM_DESTRUCTOR): Delete.
* config/gcn/crt0.c (size_t): Define.
(_init_array, _fini_array): New.
(__preinit_array_start, __preinit_array_end,
__init_array_start, __init_array_end,
__fini_array_start, __fini_array_end): Declare weak references.
Co-Authored-By: Andrew Stubbs <ams@codesourcery.com>
From-SVN: r271526
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Copyright (C) 2017-2019 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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typedef long long size_t;
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/* Provide an entry point symbol to silence a linker warning. */
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void _start() {}
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#ifdef USE_NEWLIB_INITFINI
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extern void __libc_init_array (void) __attribute__((weak));
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extern void __libc_fini_array (void) __attribute__((weak));
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__attribute__((amdgpu_hsa_kernel ()))
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void _init_array()
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{
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__libc_init_array ();
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}
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__attribute__((amdgpu_hsa_kernel ()))
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void _fini_array()
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{
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__libc_fini_array ();
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}
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#endif
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/* These magic symbols are provided by the linker. */
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extern void (*__preinit_array_start []) (void) __attribute__((weak));
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extern void (*__preinit_array_end []) (void) __attribute__((weak));
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extern void (*__init_array_start []) (void) __attribute__((weak));
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extern void (*__init_array_end []) (void) __attribute__((weak));
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extern void (*__fini_array_start []) (void) __attribute__((weak));
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extern void (*__fini_array_end []) (void) __attribute__((weak));
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__attribute__((amdgpu_hsa_kernel ()))
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void _init_array()
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{
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/* Iterate over all the init routines. */
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size_t count;
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size_t i;
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count = __preinit_array_end - __preinit_array_start;
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for (i = 0; i < count; i++)
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__preinit_array_start[i] ();
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count = __init_array_end - __init_array_start;
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for (i = 0; i < count; i++)
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__init_array_start[i] ();
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}
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__attribute__((amdgpu_hsa_kernel ()))
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void _fini_array()
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{
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size_t count;
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size_t i;
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count = __fini_array_end - __fini_array_start;
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for (i = count; i > 0; i--)
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__fini_array_start[i-1] ();
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}
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