File: [local] / sys / sys / exec.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:11 2008 UTC (16 years, 3 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)
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/* $OpenBSD: exec.h,v 1.24 2007/05/26 00:36:03 krw Exp $ */
/* $NetBSD: exec.h,v 1.59 1996/02/09 18:25:09 christos Exp $ */
/*-
* Copyright (c) 1994 Christopher G. Demetriou
* Copyright (c) 1993 Theo de Raadt
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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.
*
* @(#)exec.h 8.3 (Berkeley) 1/21/94
*/
#ifndef _SYS_EXEC_H_
#define _SYS_EXEC_H_
/*
* The following structure is found at the top of the user stack of each
* user process. The ps program uses it to locate argv and environment
* strings. Programs that wish ps to display other information may modify
* it; normally ps_argvstr points to argv[0], and ps_nargvstr is the same
* as the program's argc. The fields ps_envstr and ps_nenvstr are the
* equivalent for the environment.
*/
struct ps_strings {
char **ps_argvstr; /* first of 0 or more argument strings */
int ps_nargvstr; /* the number of argument strings */
char **ps_envstr; /* first of 0 or more environment strings */
int ps_nenvstr; /* the number of environment strings */
};
/*
* Address of ps_strings structure (in user space).
*/
#ifdef MACHINE_STACK_GROWS_UP
#define PS_STRINGS ((struct ps_strings *)(USRSTACK))
#else
#define PS_STRINGS \
((struct ps_strings *)(USRSTACK - sizeof(struct ps_strings)))
#endif
/*
* Below the PS_STRINGS and sigtramp, we may require a gap on the stack
* (used to copyin/copyout various emulation data structures).
*/
#define STACKGAPLEN (2*1024) /* plenty enough for now */
#ifdef MACHINE_STACK_GROWS_UP
#define STACKGAPBASE_UNALIGNED \
((caddr_t)PS_STRINGS + sizeof(struct ps_strings))
#else
#define STACKGAPBASE_UNALIGNED \
((caddr_t)PS_STRINGS - STACKGAPLEN)
#endif
#define STACKGAPBASE \
((caddr_t)ALIGN(STACKGAPBASE_UNALIGNED))
/*
* the following structures allow execve() to put together processes
* in a more extensible and cleaner way.
*
* the exec_package struct defines an executable being execve()'d.
* it contains the header, the vmspace-building commands, the vnode
* information, and the arguments associated with the newly-execve'd
* process.
*
* the exec_vmcmd struct defines a command description to be used
* in creating the new process's vmspace.
*/
struct proc;
struct exec_package;
typedef int (*exec_makecmds_fcn)(struct proc *, struct exec_package *);
struct execsw {
u_int es_hdrsz; /* size of header for this format */
exec_makecmds_fcn es_check; /* function to check exec format */
struct emul *es_emul; /* emulation */
};
struct exec_vmcmd {
int (*ev_proc)(struct proc *p, struct exec_vmcmd *cmd);
/* procedure to run for region of vmspace */
u_long ev_len; /* length of the segment to map */
u_long ev_addr; /* address in the vmspace to place it at */
struct vnode *ev_vp; /* vnode pointer for the file w/the data */
u_long ev_offset; /* offset in the file for the data */
u_int ev_prot; /* protections for segment */
int ev_flags;
#define VMCMD_RELATIVE 0x0001 /* ev_addr is relative to base entry */
#define VMCMD_BASE 0x0002 /* marks a base entry */
};
#define EXEC_DEFAULT_VMCMD_SETSIZE 8 /* # of cmds in set to start */
/* exec vmspace-creation command set; see below */
struct exec_vmcmd_set {
u_int evs_cnt;
u_int evs_used;
struct exec_vmcmd *evs_cmds;
struct exec_vmcmd evs_start[EXEC_DEFAULT_VMCMD_SETSIZE];
};
struct exec_package {
char *ep_name; /* file's name */
void *ep_hdr; /* file's exec header */
u_int ep_hdrlen; /* length of ep_hdr */
u_int ep_hdrvalid; /* bytes of ep_hdr that are valid */
struct nameidata *ep_ndp; /* namei data pointer for lookups */
struct exec_vmcmd_set ep_vmcmds; /* vmcmds used to build vmspace */
struct vnode *ep_vp; /* executable's vnode */
struct vattr *ep_vap; /* executable's attributes */
u_long ep_taddr; /* process's text address */
u_long ep_tsize; /* size of process's text */
u_long ep_daddr; /* process's data(+bss) address */
u_long ep_dsize; /* size of process's data(+bss) */
u_long ep_maxsaddr; /* proc's max stack addr ("top") */
u_long ep_minsaddr; /* proc's min stack addr ("bottom") */
u_long ep_ssize; /* size of process's stack */
u_long ep_entry; /* process's entry point */
u_int ep_flags; /* flags; see below. */
char **ep_fa; /* a fake args vector for scripts */
int ep_fd; /* a file descriptor we're holding */
struct emul *ep_emul; /* os emulation */
void *ep_emul_arg; /* emulation argument */
void *ep_emul_argp; /* emulation argument pointer */
char *ep_interp; /* name of interpreter if any */
u_long ep_interp_pos; /* interpreter load position */
};
#define EXEC_INDIR 0x0001 /* script handling already done */
#define EXEC_HASFD 0x0002 /* holding a shell script */
#define EXEC_HASARGL 0x0004 /* has fake args vector */
#define EXEC_SKIPARG 0x0008 /* don't copy user-supplied argv[0] */
#define EXEC_DESTR 0x0010 /* destructive ops performed */
#ifdef _KERNEL
/*
* functions used either by execve() or the various cpu-dependent execve()
* hooks.
*/
int exec_makecmds(struct proc *, struct exec_package *);
int exec_runcmds(struct proc *, struct exec_package *);
void vmcmdset_extend(struct exec_vmcmd_set *);
void kill_vmcmds(struct exec_vmcmd_set *evsp);
int vmcmd_map_pagedvn(struct proc *, struct exec_vmcmd *);
int vmcmd_map_readvn(struct proc *, struct exec_vmcmd *);
int vmcmd_map_zero(struct proc *, struct exec_vmcmd *);
void *copyargs(struct exec_package *,
struct ps_strings *,
void *, void *);
void setregs(struct proc *, struct exec_package *,
u_long, register_t *);
int check_exec(struct proc *, struct exec_package *);
int exec_setup_stack(struct proc *, struct exec_package *);
int exec_process_vmcmds(struct proc *, struct exec_package *);
#ifdef DEBUG
void new_vmcmd(struct exec_vmcmd_set *evsp,
int (*proc)(struct proc *p, struct exec_vmcmd *),
u_long len, u_long addr, struct vnode *vp, u_long offset,
u_int prot, int flags);
#define NEW_VMCMD(evsp,proc,len,addr,vp,offset,prot) \
new_vmcmd(evsp,proc,len,addr,vp,offset,prot, 0);
#define NEW_VMCMD2(evsp,proc,len,addr,vp,offset,prot,flags) \
new_vmcmd(evsp,proc,len,addr,vp,offset,prot,flags)
#else /* DEBUG */
#define NEW_VMCMD(evsp,proc,len,addr,vp,offset,prot) \
NEW_VMCMD2(evsp,proc,len,addr,vp,offset,prot,0)
#define NEW_VMCMD2(evsp,proc,len,addr,vp,offset,prot,flags) do { \
struct exec_vmcmd *vcp; \
if ((evsp)->evs_used >= (evsp)->evs_cnt) \
vmcmdset_extend(evsp); \
vcp = &(evsp)->evs_cmds[(evsp)->evs_used++]; \
vcp->ev_proc = (proc); \
vcp->ev_len = (len); \
vcp->ev_addr = (addr); \
if ((vcp->ev_vp = (vp)) != NULLVP) \
VREF(vp); \
vcp->ev_offset = (offset); \
vcp->ev_prot = (prot); \
vcp->ev_flags = (flags); \
} while (0)
#endif /* DEBUG */
/* Initialize an empty vmcmd set */
#define VMCMDSET_INIT(vmc) do { \
(vmc)->evs_cnt = EXEC_DEFAULT_VMCMD_SETSIZE; \
(vmc)->evs_cmds = (vmc)->evs_start; \
(vmc)->evs_used = 0; \
} while (0)
/*
* Exec function switch:
*
* Note that each makecmds function is responsible for loading the
* exec package with the necessary functions for any exec-type-specific
* handling.
*
* Functions for specific exec types should be defined in their own
* header file.
*/
extern struct execsw execsw[];
extern int nexecs;
extern int exec_maxhdrsz;
#endif /* _KERNEL */
#include <sys/exec_aout.h>
#include <machine/exec.h>
#endif /* !_SYS_EXEC_H_ */