| 1 | /* $NetBSD: linux32_exec.h,v 1.6 2014/02/21 07:53:53 maxv Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by Emmanuel Dreyfus |
| 17 | * 4. The name of the author may not be used to endorse or promote |
| 18 | * products derived from this software without specific prior written |
| 19 | * permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
| 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | #ifndef _AMD64_LINUX32_EXEC_H |
| 34 | #define _AMD64_LINUX32_EXEC_H |
| 35 | |
| 36 | #include <sys/exec_elf.h> |
| 37 | |
| 38 | #define LINUX32_M_I386 100 |
| 39 | #define LINUX32_MID_MACHINE LINUX_M_I386 |
| 40 | #define LINUX32_USRSTACK 0xC0000000 |
| 41 | |
| 42 | #define LINUX32_DEBUGLINK_SIGNATURE 1 |
| 43 | |
| 44 | /* Counted from common/linux32_exec_elf32.c */ |
| 45 | #define LINUX32_ELF_AUX_ENTRIES 15 |
| 46 | |
| 47 | #define LINUX32_RANDOM_BYTES 16 /* 16 bytes for AT_RANDOM */ |
| 48 | |
| 49 | #if 0 |
| 50 | |
| 51 | /* Hardware platform identifier string */ |
| 52 | #define LINUX32_PLATFORM "i686" |
| 53 | |
| 54 | #define LINUX32_CPUCAP (cpu_feature[0]) |
| 55 | |
| 56 | /* vsyscall assembly */ |
| 57 | static char linux32_kernel_vsyscall[] = { |
| 58 | 0x55, /* push %ebp */ \ |
| 59 | 0x89, 0xcd, /* mov %ecx,%ebp */ \ |
| 60 | 0x0f, 0x05, /* syscall */ \ |
| 61 | 0xb9, 0x7b, 0x00, 0x00, 0x00, /* mov $0x7b,%ecx */ \ |
| 62 | 0x8e, 0xd1, /* movl %ecx,%ss */ \ |
| 63 | 0x89, 0xe9, /* mov %ebp,%ecx */ \ |
| 64 | 0x5d, /* pop %ebp */ \ |
| 65 | 0xc3, /* ret */ \ |
| 66 | }; |
| 67 | |
| 68 | /* The extra data (ELF auxiliary table and platform name) on stack */ |
| 69 | struct linux32_extra_stack_data { |
| 70 | Aux32Info ai[LINUX32_ELF_AUX_ENTRIES]; |
| 71 | char hw_platform[sizeof(LINUX32_PLATFORM)]; |
| 72 | int pad; |
| 73 | Elf32_Ehdr elfhdr; |
| 74 | char kernel_vsyscall[sizeof(linux32_kernel_vsyscall)]; |
| 75 | }; |
| 76 | #define LINUX32_ELF_AUX_ARGSIZ sizeof(struct linux32_extra_stack_data) |
| 77 | |
| 78 | #endif |
| 79 | |
| 80 | #define LINUX32_ELF_AUX_ARGSIZ \ |
| 81 | (howmany(LINUX32_ELF_AUX_ENTRIES * sizeof(Aux32Info), sizeof(Elf32_Addr)) + LINUX32_RANDOM_BYTES) |
| 82 | |
| 83 | #ifdef _KERNEL |
| 84 | int linux32_exec_setup_stack(struct lwp *, struct exec_package *); |
| 85 | #endif |
| 86 | |
| 87 | #endif /* !_AMD64_LINUX32_EXEC_H */ |
| 88 | |