/* $NetBSD: linux32_exec.h,v 1.10 2021/11/26 08:56:28 ryo Exp $ */

/* $NetBSD: linux32_exec.h,v 1.10 2021/11/26 08:56:28 ryo Exp $ */

/*-
* Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Emmanuel Dreyfus
* 4. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _AMD64_LINUX32_EXEC_H
#define _AMD64_LINUX32_EXEC_H

#include <sys/exec_elf.h>

#define LINUX32_M_I386 100
#define LINUX32_MID_MACHINE LINUX_M_I386
#define LINUX32_USRSTACK 0xC0000000

#define LINUX32_DEBUGLINK_SIGNATURE 1
#define LINUX32_GO_RT0_SIGNATURE 1

/* Counted from common/linux32_exec_elf32.c */
#define LINUX32_ELF_AUX_ENTRIES 20

/* Hardware platform identifier string */
#define LINUX32_PLATFORM "i686"

#define LINUX32_CPUCAP (cpu_feature[0])

#if 0
/* vsyscall assembly */
static char linux32_kernel_vsyscall[] = {
0x55, /* push %ebp */ \
0x89, 0xcd, /* mov %ecx,%ebp */ \
0x0f, 0x05, /* syscall */ \
0xb9, 0x7b, 0x00, 0x00, 0x00, /* mov $0x7b,%ecx */ \
0x8e, 0xd1, /* movl %ecx,%ss */ \
0x89, 0xe9, /* mov %ebp,%ecx */ \
0x5d, /* pop %ebp */ \
0xc3, /* ret */ \
};
#endif

/* The extra data (ELF auxiliary table and platform name) on stack */
struct linux32_extra_stack_data {
Aux32Info ai[LINUX32_ELF_AUX_ENTRIES];
uint32_t randbytes[4];
char hw_platform[8]; /* sizeof(LINUX32_PLATFORM) + align */
#if 0 /* notyet */
Elf32_Ehdr elfhdr;
char kernel_vsyscall[sizeof(linux32_kernel_vsyscall)];
#endif
};

#define LINUX32_ELF_AUX_ARGSIZ sizeof(struct linux32_extra_stack_data)

#define linux32_exec_setup_stack linux_exec_setup_stack

#endif /* !_AMD64_LINUX32_EXEC_H */