| elf32_freebsd.c (39887) | elf32_freebsd.c (39902) |
|---|---|
| 1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $Id: elf_freebsd.c,v 1.1 1998/09/30 19:48:09 peter Exp $ | 26 * $Id: elf_freebsd.c,v 1.2 1998/10/02 08:04:56 peter Exp $ |
| 27 */ 28 29#include <sys/param.h> 30#include <sys/exec.h> 31#include <sys/reboot.h> 32#include <sys/linker.h> 33#include <string.h> 34#include <machine/bootinfo.h> --- 13 unchanged lines hidden (view full) --- 48/* 49 * There is an a.out kernel and one or more a.out modules loaded. 50 * We wish to start executing the kernel image, so make such 51 * preparations as are required, and do so. 52 */ 53static int 54elf_exec(struct loaded_module *mp) 55{ | 27 */ 28 29#include <sys/param.h> 30#include <sys/exec.h> 31#include <sys/reboot.h> 32#include <sys/linker.h> 33#include <string.h> 34#include <machine/bootinfo.h> --- 13 unchanged lines hidden (view full) --- 48/* 49 * There is an a.out kernel and one or more a.out modules loaded. 50 * We wish to start executing the kernel image, so make such 51 * preparations as are required, and do so. 52 */ 53static int 54elf_exec(struct loaded_module *mp) 55{ |
| 56 struct loaded_module *xp; 57 struct i386_devdesc *currdev; | |
| 58 struct module_metadata *md; 59 Elf_Ehdr *ehdr; | 56 struct module_metadata *md; 57 Elf_Ehdr *ehdr; |
| 60 u_int32_t argv[6]; /* kernel arguments */ 61 int major, bootdevnr; 62 vm_offset_t addr, entry; 63 u_int pad; 64 vm_offset_t ssym, esym, *symptr; | 58 vm_offset_t entry, bootinfop; 59 int boothowto, err, bootdev; 60 struct bootinfo *bi; 61 vm_offset_t ssym, esym; |
| 65 66 if ((md = mod_findmetadata(mp, MODINFOMD_ELFHDR)) == NULL) 67 return(EFTYPE); /* XXX actually EFUCKUP */ 68 ehdr = (Elf_Ehdr *)&(md->md_data); 69 | 62 63 if ((md = mod_findmetadata(mp, MODINFOMD_ELFHDR)) == NULL) 64 return(EFTYPE); /* XXX actually EFUCKUP */ 65 ehdr = (Elf_Ehdr *)&(md->md_data); 66 |
| 70 /* Boot from whatever the current device is */ 71 i386_getdev((void **)(&currdev), NULL, NULL); 72 switch(currdev->d_type) { 73 case DEVT_DISK: 74 major = 0; /* XXX work out the best possible major here */ 75 bootdevnr = MAKEBOOTDEV(major, 76 currdev->d_kind.biosdisk.slice >> 4, 77 currdev->d_kind.biosdisk.slice & 0xf, 78 currdev->d_kind.biosdisk.unit, 79 currdev->d_kind.biosdisk.partition); 80 break; 81 default: 82 printf("elf_exec: WARNING - don't know how to boot from device type %d\n", currdev->d_type); 83 } 84 free(currdev); | 67 /* XXX allow override? */ 68 setenv("kernelname", mp->m_name, 1); |
| 85 | 69 |
| 70 if ((err = bi_load(mp->m_args, &boothowto, &bootdev, &bootinfop)) != 0) 71 return(err); 72 entry = ehdr->e_entry & 0xffffff; 73 |
|
| 86 if ((md = mod_findmetadata(mp, MODINFOMD_ELFSSYM)) != NULL) 87 ssym = *((vm_offset_t *)&(md->md_data)); 88 if ((md = mod_findmetadata(mp, MODINFOMD_ELFESYM)) != NULL) 89 esym = *((vm_offset_t *)&(md->md_data)); 90 if (ssym == 0 || esym == 0) 91 ssym = esym = 0; /* sanity */ 92 | 74 if ((md = mod_findmetadata(mp, MODINFOMD_ELFSSYM)) != NULL) 75 ssym = *((vm_offset_t *)&(md->md_data)); 76 if ((md = mod_findmetadata(mp, MODINFOMD_ELFESYM)) != NULL) 77 esym = *((vm_offset_t *)&(md->md_data)); 78 if (ssym == 0 || esym == 0) 79 ssym = esym = 0; /* sanity */ 80 |
| 93 /* legacy bootinfo structure */ 94 bi.bi_version = BOOTINFO_VERSION; 95 bi.bi_kernelname = 0; /* XXX char * -> kernel name */ 96 bi.bi_nfs_diskless = 0; /* struct nfs_diskless * */ 97 bi.bi_n_bios_used = 0; /* XXX would have to hook biosdisk driver for these */ 98 /* bi.bi_bios_geom[] */ 99 bi.bi_size = sizeof(bi); 100 bi.bi_memsizes_valid = 1; 101 bi.bi_vesa = 0; /* XXX correct value? */ 102 bi.bi_basemem = getbasemem(); 103 bi.bi_extmem = getextmem(); 104 bi.bi_symtab = ssym; 105 bi.bi_esymtab = esym; | 81 bi = (struct bootinfo *)PTOV(bootinfop); 82 bi->bi_symtab = ssym; 83 bi->bi_esymtab = esym; |
| 106 | 84 |
| 107 /* Device data is kept in the kernel argv array */ 108 argv[0] = bi_getboothowto(mp->m_args); /* boothowto */ 109 argv[1] = bootdevnr; /* bootdev */ 110 argv[2] = 0; /* old cyloffset */ 111 argv[3] = 0; /* old esym */ 112 argv[4] = 0; /* "new" bootinfo magic */ 113 argv[5] = 0; /* physical addr of bootinfo */ | |
| 114 | 85 |
| 115 /* find the last module in the chain */ 116 for (xp = mp; xp->m_next != NULL; xp = xp->m_next) 117 ; 118 addr = xp->m_addr + xp->m_size; 119 /* pad to a page boundary */ 120 pad = (u_int)addr & PAGE_MASK; 121 if (pad != 0) { 122 pad = PAGE_SIZE - pad; 123 addr += pad; 124 } 125 /* copy our environment */ 126 bi.bi_envp = addr; 127 addr = bi_copyenv(addr); 128 129 /* 130 * Note, we could move the following onto a seperate page for reclaiming, 131 * but the environment is so small and so is this. 132 */ 133 134 /* pad to a 4-byte boundary */ 135 addr = (addr + 0x3) & ~0x3; 136 137 /* leave space for bootinfo */ 138 argv[5] = (u_int32_t)addr; 139 addr += sizeof(struct bootinfo); 140 141 /* pad to a 4-byte boundary */ 142 addr = (addr + 0x3) & ~0x3; 143 144 /* save in kernel name */ 145 bi.bi_kernelname = addr; 146 i386_copyin(mp->m_name, addr, strlen(mp->m_name) + 1); 147 addr += strlen(mp->m_name) + 1; 148 149 /* pad to a page boundary */ 150 pad = (u_int)addr & PAGE_MASK; 151 if (pad != 0) { 152 pad = PAGE_SIZE - pad; 153 addr += pad; 154 } 155 /* copy module list and metadata */ 156 bi.bi_modulep = addr; 157 addr = bi_copymodules(addr); 158 159 /* all done copying stuff in, save end of loaded object space */ 160 bi.bi_kernend = addr; 161 162 /* and insert bootinfo struct into reserved spot */ 163 i386_copyin(&bi, (vm_offset_t)argv[5], sizeof(bi)); 164 argv[0] |= RB_BOOTINFO; /* it's there now */ 165 166 entry = ehdr->e_entry & 0xffffff; 167 | |
| 168#ifdef DEBUG | 86#ifdef DEBUG |
| 169 { 170 int i; 171 for (i = 0; i < 6; i++) 172 printf("argv[%d]=%lx\n", i, argv[i]); 173 } 174 | |
| 175 printf("Start @ 0x%lx ...\n", entry); 176#endif 177 | 87 printf("Start @ 0x%lx ...\n", entry); 88#endif 89 |
| 178 __exec((void *)entry, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]); | 90 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop); |
| 179 180 panic("exec returned"); 181} | 91 92 panic("exec returned"); 93} |