File: [local] / sys / lib / libsa / loadfile_elf.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:15:15 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $NetBSD: loadfile.c,v 1.10 2000/12/03 02:53:04 tsutsui Exp $ */
/* $OpenBSD: loadfile_elf.c,v 1.1 2007/05/30 01:25:43 tom 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 and by Christos Zoulas.
*
* 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. 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
*/
int ELFNAME(exec)(int, Elf_Ehdr *, u_long *, int);
int
ELFNAME(exec)(int fd, Elf_Ehdr *elf, u_long *marks, int flags)
{
Elf_Shdr *shp;
Elf_Phdr *phdr;
Elf_Off off;
int i;
size_t sz;
int first;
int havesyms;
paddr_t minp = ~0, maxp = 0, pos = 0;
paddr_t offset = marks[MARK_START], shpp, elfp;
sz = elf->e_phnum * sizeof(Elf_Phdr);
phdr = ALLOC(sz);
if (lseek(fd, (off_t)elf->e_phoff, SEEK_SET) == -1) {
WARN(("lseek phdr"));
FREE(phdr, sz);
return 1;
}
if (read(fd, phdr, sz) != sz) {
WARN(("read program headers"));
FREE(phdr, sz);
return 1;
}
for (first = 1, i = 0; i < elf->e_phnum; i++) {
if (phdr[i].p_type != PT_LOAD ||
(phdr[i].p_flags & (PF_W|PF_R|PF_X)) == 0)
continue;
#define IS_TEXT(p) (p.p_flags & PF_X)
#define IS_DATA(p) ((p.p_flags & PF_X) == 0)
#define IS_BSS(p) (p.p_filesz < p.p_memsz)
/*
* XXX: Assume first address is lowest
*/
if ((IS_TEXT(phdr[i]) && (flags & LOAD_TEXT)) ||
(IS_DATA(phdr[i]) && (flags & LOAD_DATA))) {
/* Read in segment. */
PROGRESS(("%s%lu", first ? "" : "+",
(u_long)phdr[i].p_filesz));
if (lseek(fd, (off_t)phdr[i].p_offset, SEEK_SET) == -1) {
WARN(("lseek text"));
FREE(phdr, sz);
return 1;
}
if (READ(fd, phdr[i].p_vaddr, phdr[i].p_filesz) !=
phdr[i].p_filesz) {
WARN(("read text"));
FREE(phdr, sz);
return 1;
}
first = 0;
}
if ((IS_TEXT(phdr[i]) && (flags & (LOAD_TEXT|COUNT_TEXT))) ||
(IS_DATA(phdr[i]) && (flags & (LOAD_DATA|COUNT_TEXT)))) {
pos = phdr[i].p_vaddr;
if (minp > pos)
minp = pos;
pos += phdr[i].p_filesz;
if (maxp < pos)
maxp = pos;
}
/* Zero out bss. */
if (IS_BSS(phdr[i]) && (flags & LOAD_BSS)) {
PROGRESS(("+%lu",
(u_long)(phdr[i].p_memsz - phdr[i].p_filesz)));
BZERO((phdr[i].p_vaddr + phdr[i].p_filesz),
phdr[i].p_memsz - phdr[i].p_filesz);
}
if (IS_BSS(phdr[i]) && (flags & (LOAD_BSS|COUNT_BSS))) {
pos += phdr[i].p_memsz - phdr[i].p_filesz;
if (maxp < pos)
maxp = pos;
}
}
FREE(phdr, sz);
/*
* Copy the ELF and section headers.
*/
elfp = maxp = roundup(maxp, sizeof(long));
if (flags & (LOAD_HDR|COUNT_HDR))
maxp += sizeof(Elf_Ehdr);
if (flags & (LOAD_SYM|COUNT_SYM)) {
if (lseek(fd, (off_t)elf->e_shoff, SEEK_SET) == -1) {
WARN(("lseek section headers"));
return 1;
}
sz = elf->e_shnum * sizeof(Elf_Shdr);
shp = ALLOC(sz);
if (read(fd, shp, sz) != sz) {
WARN(("read section headers"));
FREE(shp, sz);
return 1;
}
shpp = maxp;
maxp += roundup(sz, 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) + sz), sizeof(long));
for (havesyms = i = 0; i < elf->e_shnum; i++)
if (shp[i].sh_type == SHT_SYMTAB)
havesyms = 1;
for (first = 1, i = 0; i < elf->e_shnum; i++) {
if (shp[i].sh_type == SHT_SYMTAB ||
shp[i].sh_type == SHT_STRTAB) {
if (havesyms && (flags & LOAD_SYM)) {
PROGRESS(("%s%ld", first ? " [" : "+",
(u_long)shp[i].sh_size));
if (lseek(fd, (off_t)shp[i].sh_offset,
SEEK_SET) == -1) {
WARN(("lseek symbols"));
FREE(shp, sz);
return 1;
}
if (READ(fd, maxp, shp[i].sh_size) !=
shp[i].sh_size) {
WARN(("read symbols"));
FREE(shp, sz);
return 1;
}
}
maxp += roundup(shp[i].sh_size,
sizeof(long));
shp[i].sh_offset = off;
off += roundup(shp[i].sh_size, sizeof(long));
first = 0;
}
}
if (flags & LOAD_SYM) {
BCOPY(shp, shpp, sz);
if (havesyms && first == 0)
PROGRESS(("]"));
}
FREE(shp, sz);
}
/*
* Frob the copied ELF header to give information relative
* to elfp.
*/
if (flags & LOAD_HDR) {
elf->e_phoff = 0;
elf->e_shoff = sizeof(Elf_Ehdr);
elf->e_phentsize = 0;
elf->e_phnum = 0;
BCOPY(elf, elfp, sizeof(*elf));
}
marks[MARK_START] = LOADADDR(minp);
marks[MARK_ENTRY] = LOADADDR(elf->e_entry);
marks[MARK_NSYM] = 1; /* XXX: Kernel needs >= 0 */
marks[MARK_SYM] = LOADADDR(elfp);
marks[MARK_END] = LOADADDR(maxp);
return 0;
}