/*
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* Copyright (C) 2014 Philippe Gerum <rpm@xenomai.org>.
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*
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* Xenomai 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
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* Xenomai 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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*
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* You should have received a copy of the GNU General Public License
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* along with Xenomai; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _COBALT_X86_ASM_SYSCALL32_H
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#define _COBALT_X86_ASM_SYSCALL32_H
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#include <asm/unistd.h>
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#ifdef CONFIG_IA32_EMULATION
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#define __COBALT_IA32_BASE 256 /* Power of two. */
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#define __COBALT_SYSNR32emu(__reg) \
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({ \
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long __nr = __reg; \
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if (in_ia32_syscall()) \
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__nr += __COBALT_IA32_BASE; \
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__nr; \
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})
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#define __COBALT_COMPAT32emu(__reg) \
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(in_ia32_syscall() ? __COBALT_COMPAT_BIT : 0)
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#if __NR_COBALT_SYSCALLS > __COBALT_IA32_BASE
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#error "__NR_COBALT_SYSCALLS > __COBALT_IA32_BASE"
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#endif
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#define __syshand32emu__(__name) \
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((cobalt_syshand)(void (*)(void))(CoBaLt32emu_ ## __name))
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#define __COBALT_CALL32emu_INITHAND(__handler) \
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[__COBALT_IA32_BASE ... __COBALT_IA32_BASE + __NR_COBALT_SYSCALLS-1] = __handler,
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#define __COBALT_CALL32emu_INITMODE(__mode) \
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[__COBALT_IA32_BASE ... __COBALT_IA32_BASE + __NR_COBALT_SYSCALLS-1] = __mode,
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/* ia32 default entry (no thunk) */
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#define __COBALT_CALL32emu_ENTRY(__name, __handler) \
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[sc_cobalt_ ## __name + __COBALT_IA32_BASE] = __handler,
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/* ia32 thunk installation */
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#define __COBALT_CALL32emu_THUNK(__name) \
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__COBALT_CALL32emu_ENTRY(__name, __syshand32emu__(__name))
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/* ia32 thunk implementation. */
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#define COBALT_SYSCALL32emu(__name, __mode, __args) \
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long CoBaLt32emu_ ## __name __args
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/* ia32 thunk declaration. */
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#define COBALT_SYSCALL32emu_DECL(__name, __args) \
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long CoBaLt32emu_ ## __name __args
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#else /* !CONFIG_IA32_EMULATION */
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/* ia32 emulation support disabled. */
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#define __COBALT_SYSNR32emu(__reg) (__reg)
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#define __COBALT_COMPAT32emu(__reg) 0
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#define __COBALT_CALL32emu_INITHAND(__handler)
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#define __COBALT_CALL32emu_INITMODE(__mode)
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#define __COBALT_CALL32emu_ENTRY(__name, __handler)
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#define __COBALT_CALL32emu_THUNK(__name)
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#define COBALT_SYSCALL32emu_DECL(__name, __args)
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#endif /* !CONFIG_IA32_EMULATION */
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#define __COBALT_CALL32_ENTRY(__name, __handler) \
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__COBALT_CALL32emu_ENTRY(__name, __handler)
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#define __COBALT_CALL32_INITHAND(__handler) \
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__COBALT_CALL32emu_INITHAND(__handler)
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#define __COBALT_CALL32_INITMODE(__mode) \
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__COBALT_CALL32emu_INITMODE(__mode)
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/* Already checked for __COBALT_SYSCALL_BIT */
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#define __COBALT_CALL32_SYSNR(__reg) __COBALT_SYSNR32emu(__reg)
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#define __COBALT_CALL_COMPAT(__reg) __COBALT_COMPAT32emu(__reg)
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#endif /* !_COBALT_X86_ASM_SYSCALL32_H */
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