/* $NetBSD: loadfile.c,v 1.10 1998/06/25 06:45:46 ross Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * 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 the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)boot.c 8.1 (Berkeley) 6/10/93 */ #define ELFSIZE 64 #include #include #include #include #include #include #include #define _KERNEL #include "include/pte.h" #ifdef ALPHA_BOOT_ECOFF static int coff_exec __P((int, struct ecoff_exechdr *, u_int64_t *)); #endif #ifdef ALPHA_BOOT_ELF static int elf_exec __P((int, Elf_Ehdr *, u_int64_t *)); #endif int loadfile __P((char *, u_int64_t *)); vm_offset_t ffp_save, ptbr_save; vm_offset_t ssym, esym; /* * Open 'filename', read in program and return the entry point or -1 if error. */ int loadfile(fname, entryp) char *fname; u_int64_t *entryp; { union { #ifdef ALPHA_BOOT_ECOFF struct ecoff_exechdr coff; #endif #ifdef ALPHA_BOOT_ELF Elf_Ehdr elf; #endif } hdr; ssize_t nr; int fd, rval; printf("\nLoading %s...\n", fname); /* Open the file. */ rval = 1; if ((fd = open(fname, 0)) < 0) { (void)printf("open %s: %s\n", fname, strerror(errno)); goto err; } /* Read the exec header. */ if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) { (void)printf("read header: %s\n", strerror(errno)); goto err; } #ifdef ALPHA_BOOT_ECOFF if (!ECOFF_BADMAG(&hdr.coff)) { rval = coff_exec(fd, &hdr.coff, entryp); } else #endif #ifdef ALPHA_BOOT_ELF if (memcmp(Elf_e_ident, hdr.elf.e_ident, Elf_e_siz) == 0) { rval = elf_exec(fd, &hdr.elf, entryp); } else #endif { (void)printf("%s: unknown executable format\n", fname); } err: if (fd >= 0) (void)close(fd); return (rval); } #ifdef ALPHA_BOOT_ECOFF static int coff_exec(fd, coff, entryp) int fd; struct ecoff_exechdr *coff; u_int64_t *entryp; { /* Read in text. */ (void)printf("%lu", coff->a.tsize); if (lseek(fd, ECOFF_TXTOFF(coff), SEEK_SET) == -1) { (void)printf("lseek text: %s\n", strerror(errno)); return (1); } if (read(fd, (void *)coff->a.text_start, coff->a.tsize) != coff->a.tsize) { (void)printf("read text: %s\n", strerror(errno)); return (1); } /* Read in data. */ if (coff->a.dsize != 0) { (void)printf("+%lu", coff->a.dsize); if (read(fd, (void *)coff->a.data_start, coff->a.dsize) != coff->a.dsize) { (void)printf("read data: %s\n", strerror(errno)); return (1); } } /* Zero out bss. */ if (coff->a.bsize != 0) { (void)printf("+%lu", coff->a.bsize); bzero((void *)coff->a.bss_start, coff->a.bsize); } ffp_save = coff->a.text_start + coff->a.tsize; if (ffp_save < coff->a.data_start + coff->a.dsize) ffp_save = coff->a.data_start + coff->a.dsize; if (ffp_save < coff->a.bss_start + coff->a.bsize) ffp_save = coff->a.bss_start + coff->a.bsize; ffp_save = ALPHA_K0SEG_TO_PHYS((ffp_save + PGOFSET) & ~PGOFSET) >> PGSHIFT; ffp_save += 2; /* XXX OSF/1 does this, no idea why. */ (void)printf("\n"); *entryp = coff->a.entry; return (0); } #endif /* ALPHA_BOOT_ECOFF */ #ifdef ALPHA_BOOT_ELF static int elf_exec(fd, elf, entryp) int fd; Elf_Ehdr *elf; u_int64_t *entryp; { Elf_Shdr *shp; Elf_Off off; int i; int first = 1; int havesyms; for (i = 0; i < elf->e_phnum; i++) { Elf_Phdr phdr; if (lseek(fd, elf->e_phoff + sizeof(phdr) * i, SEEK_SET) == -1) { (void)printf("lseek phdr: %s\n", strerror(errno)); return (1); } if (read(fd, (void *)&phdr, sizeof(phdr)) != sizeof(phdr)) { (void)printf("read phdr: %s\n", strerror(errno)); return (1); } if (phdr.p_type != Elf_pt_load || (phdr.p_flags & (Elf_pf_w|Elf_pf_x)) == 0) continue; /* Read in segment. */ (void)printf("%s%lu", first ? "" : "+", phdr.p_filesz); if (lseek(fd, phdr.p_offset, SEEK_SET) == -1) { (void)printf("lseek text: %s\n", strerror(errno)); return (1); } if (read(fd, (void *)phdr.p_vaddr, phdr.p_filesz) != phdr.p_filesz) { (void)printf("read text: %s\n", strerror(errno)); return (1); } if (first || ffp_save < phdr.p_vaddr + phdr.p_memsz) ffp_save = phdr.p_vaddr + phdr.p_memsz; /* Zero out bss. */ if (phdr.p_filesz < phdr.p_memsz) { (void)printf("+%lu", phdr.p_memsz - phdr.p_filesz); bzero((void *)(phdr.p_vaddr + phdr.p_filesz), phdr.p_memsz - phdr.p_filesz); } first = 0; } /* * Copy the ELF and section headers. */ ffp_save = roundup(ffp_save, sizeof(long)); ssym = ffp_save; bcopy(elf, (void *)ffp_save, sizeof(Elf_Ehdr)); ffp_save += sizeof(Elf_Ehdr); if (lseek(fd, elf->e_shoff, SEEK_SET) == -1) { printf("lseek section headers: %s\n", strerror(errno)); return (1); } if (read(fd, (void *)ffp_save, elf->e_shnum * sizeof(Elf_Shdr)) != elf->e_shnum * sizeof(Elf_Shdr)) { printf("read section headers: %s\n", strerror(errno)); return (1); } shp = (Elf_Shdr *)ffp_save; ffp_save += roundup((elf->e_shnum * sizeof(Elf_Shdr)), sizeof(long)); /* * Now load the symbol sections themselves. Make sure the * sections are aligned. Don't bother with string tables if * there are no symbol sections. */ off = roundup((sizeof(Elf_Ehdr) + (elf->e_shnum * sizeof(Elf_Shdr))), sizeof(long)); for (havesyms = i = 0; i < elf->e_shnum; i++) if (shp[i].sh_type == Elf_sht_symtab) havesyms = 1; for (first = 1, i = 0; i < elf->e_shnum; i++) { if (shp[i].sh_type == Elf_sht_symtab || shp[i].sh_type == Elf_sht_strtab) { printf("%s%ld", first ? " [" : "+", shp[i].sh_size); if (havesyms) { if (lseek(fd, shp[i].sh_offset, SEEK_SET) == -1) { printf("\nlseek symbols: %s\n", strerror(errno)); return (1); } if (read(fd, (void *)ffp_save, shp[i].sh_size) != shp[i].sh_size) { printf("\nread symbols: %s\n", strerror(errno)); return (1); } } ffp_save += roundup(shp[i].sh_size, sizeof(long)); shp[i].sh_offset = off; off += roundup(shp[i].sh_size, sizeof(long)); first = 0; } } esym = ffp_save; if (first == 0) printf("]"); ffp_save = ALPHA_K0SEG_TO_PHYS((ffp_save + PGOFSET) & ~PGOFSET) >> PGSHIFT; ffp_save += 2; /* XXX OSF/1 does this, no idea why. */ (void)printf("\n"); *entryp = elf->e_entry; /* * Frob the copied ELF header to give information relative * to ssym. */ elf = (Elf_Ehdr *)ssym; elf->e_phoff = 0; elf->e_shoff = sizeof(Elf_Ehdr); elf->e_phentsize = 0; elf->e_phnum = 0; return (0); } #endif /* ALPHA_BOOT_ELF */