elf64_freebsd.c (113083) | elf64_freebsd.c (114379) |
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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 * $FreeBSD: head/sys/boot/i386/libi386/elf64_freebsd.c 113083 2003-04-04 16:35:16Z phk $ | 26 * $FreeBSD: head/sys/boot/i386/libi386/elf64_freebsd.c 114379 2003-05-01 03:56:30Z peter $ |
27 */ 28 | 27 */ 28 |
29#define __ELF_WORD_SIZE 64 |
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29#include <sys/param.h> 30#include <sys/exec.h> 31#include <sys/linker.h> 32#include <string.h> 33#include <machine/bootinfo.h> 34#include <machine/elf.h> 35#include <stand.h> 36 37#include "bootstrap.h" 38#include "libi386.h" 39#include "btxv86.h" 40 | 30#include <sys/param.h> 31#include <sys/exec.h> 32#include <sys/linker.h> 33#include <string.h> 34#include <machine/bootinfo.h> 35#include <machine/elf.h> 36#include <stand.h> 37 38#include "bootstrap.h" 39#include "libi386.h" 40#include "btxv86.h" 41 |
41static int elf_exec(struct preloaded_file *amp); | 42static int elf64_exec(struct preloaded_file *amp); |
42 | 43 |
43struct file_format i386_elf = { elf_loadfile, elf_exec }; | 44struct file_format amd64_elf = { elf64_loadfile, elf64_exec }; |
44 | 45 |
46#define PG_V 0x001 47#define PG_RW 0x002 48#define PG_U 0x004 49#define PG_PS 0x080 50 51typedef u_int64_t p4_entry_t; 52typedef u_int64_t p3_entry_t; 53typedef u_int64_t p2_entry_t; 54extern p4_entry_t PT4[]; 55extern p3_entry_t PT3[]; 56extern p2_entry_t PT2[]; 57 58u_int32_t entry_hi; 59u_int32_t entry_lo; 60 61extern amd64_tramp(); 62 |
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45/* 46 * There is an a.out kernel and one or more a.out modules loaded. 47 * We wish to start executing the kernel image, so make such 48 * preparations as are required, and do so. 49 */ 50static int | 63/* 64 * There is an a.out kernel and one or more a.out modules loaded. 65 * We wish to start executing the kernel image, so make such 66 * preparations as are required, and do so. 67 */ 68static int |
51elf_exec(struct preloaded_file *fp) | 69elf64_exec(struct preloaded_file *fp) |
52{ 53 struct file_metadata *md; 54 Elf_Ehdr *ehdr; | 70{ 71 struct file_metadata *md; 72 Elf_Ehdr *ehdr; |
55 vm_offset_t entry, bootinfop; 56 int boothowto, err, bootdev; 57 struct bootinfo *bi; 58 vm_offset_t ssym, esym; | 73 vm_offset_t modulep, kernend; 74 int err; 75 int i; |
59 60 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 61 return(EFTYPE); /* XXX actually EFUCKUP */ 62 ehdr = (Elf_Ehdr *)&(md->md_data); 63 | 76 77 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 78 return(EFTYPE); /* XXX actually EFUCKUP */ 79 ehdr = (Elf_Ehdr *)&(md->md_data); 80 |
64 if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0) | 81 err = bi_load64(fp->f_args, &modulep, &kernend); 82 if (err != 0) |
65 return(err); | 83 return(err); |
66 entry = ehdr->e_entry & 0xffffff; | |
67 | 84 |
68 ssym = esym = 0; 69 if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL) 70 ssym = *((vm_offset_t *)&(md->md_data)); 71 if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL) 72 esym = *((vm_offset_t *)&(md->md_data)); 73 if (ssym == 0 || esym == 0) 74 ssym = esym = 0; /* sanity */ 75 bi = (struct bootinfo *)PTOV(bootinfop); 76 bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */ 77 bi->bi_esymtab = esym; | 85 bzero(PT4, PAGE_SIZE); 86 bzero(PT3, PAGE_SIZE); 87 bzero(PT2, PAGE_SIZE); |
78 | 88 |
89 /* single PML4 entry */ 90 PT4[0] = (p4_entry_t)VTOP((uintptr_t)&PT3[0]); 91 PT4[0] |= PG_V | PG_RW | PG_U; |
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79 | 92 |
93 /* Direct map 1GB at address zero */ 94 PT3[0] = (p3_entry_t)VTOP((uintptr_t)&PT2[0]); 95 PT3[0] |= PG_V | PG_RW | PG_U; 96 97 /* Direct map 1GB at KERNBASE (hardcoded for now) */ 98 PT3[1] = (p3_entry_t)VTOP((uintptr_t)&PT2[0]); 99 PT3[1] |= PG_V | PG_RW | PG_U; 100 101 /* 512 PG_PS (2MB) page mappings for 1GB of direct mapping */ 102 for (i = 0; i < 512; i++) { 103 PT2[i] = i * (2 * 1024 * 1024); 104 PT2[i] |= PG_V | PG_RW | PG_PS | PG_U; 105 } 106 107 entry_lo = ehdr->e_entry & 0xffffffff; 108 entry_hi = (ehdr->e_entry >> 32) & 0xffffffff; |
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80#ifdef DEBUG | 109#ifdef DEBUG |
81 printf("Start @ 0x%lx ...\n", entry); | 110 printf("Start @ %#llx ...\n", ehdr->e_entry); |
82#endif 83 84 dev_cleanup(); | 111#endif 112 113 dev_cleanup(); |
85 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop); | 114 __exec((void *)VTOP(amd64_tramp), modulep, kernend); |
86 87 panic("exec returned"); 88} | 115 116 panic("exec returned"); 117} |