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a8fe6d5d62
Update target_arch_elf.h to remove thread_init. Move its contents to target_arch_thread.h and rename to target_thread_init(). Update elfload.c to call it. Create thread_os_thread.h to hold the os specific parts of the thread and threat manipulation routines. Currently, it just includes target_arch_thread.h. target_arch_thread.h contains the at the moment unused target_thread_set_upcall which will be used in the future when creating actual thread (i386 has this stubbed, but other architectures in the bsd-user tree have real ones). FreeBSD doesn't do AT_HWCAP, so remove that code. Linux does, and this code came from there. These changes are all interrelated and could be brokend down, but seem to represent a reviewable changeset since most of the change is boiler plate. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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* i386 thread support
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*
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* Copyright (c) 2013 Stacey D. Son
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TARGET_ARCH_THREAD_H_
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#define _TARGET_ARCH_THREAD_H_
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/* Compare to vm_machdep.c cpu_set_upcall_kse() */
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static inline void target_thread_set_upcall(CPUX86State *regs, abi_ulong entry,
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abi_ulong arg, abi_ulong stack_base, abi_ulong stack_size)
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{
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/* XXX */
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}
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static inline void target_thread_init(struct target_pt_regs *regs,
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struct image_info *infop)
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{
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regs->esp = infop->start_stack;
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regs->eip = infop->entry;
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/*
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* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
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* contains a pointer to a function which might be registered using
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* `atexit'. This provides a mean for the dynamic linker to call DT_FINI
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* functions for shared libraries that have been loaded before the code
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* runs.
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*
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* A value of 0 tells we have no such handler.
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*/
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regs->edx = 0;
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}
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#endif /* !_TARGET_ARCH_THREAD_H_ */
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