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freebsd-nq/lkm/linux/linux.c

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First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
/*-
* Copyright (c) 1994 S<EFBFBD>ren Schmidt
* All rights reserved.
*
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
linux_interp now moved into sys/i386/linux/linux_sysvec.c, but still connected at load and unload time from here.
1996-03-10 22:43:37 +00:00
* $Id: linux.c,v 1.5 1996/03/10 08:42:32 sos Exp $
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/conf.h>
#include <sys/sysent.h>
#include <sys/lkm.h>
First attempt at FreeBSD & Linux ELF support. Compile and link a new kernel, that will give native ELF support, and provide the hooks for other ELF interpreters as well. To make native ELF binaries use John Polstras elf-kit-1.0.1.. For the time being also use his ld-elf.so.1 and put it in /usr/libexec. The Linux emulator has been enhanced to also run ELF binaries, it is however in its very first incarnation. Just get some Linux ELF libs (Slackware-3.0) and put them in the prober place (/compat/linux/...). I've ben able to run all the Slackware-3.0 binaries I've tried so far. (No it won't run quake yet :)
1996-03-10 08:42:54 +00:00
#include <sys/imgact_elf.h>
#include "i386/linux/linux.h"
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
extern const struct execsw linux_execsw;
Changed the first (name) arg of MOD_DEV(), MOD_EXEC() and MOD_MISC() from a string to an identifier so that it can be used to generate declarations and strings. It's much easier to stringize an identifier than to identifize a string. A uniform naming scheme must be used for the automatically generated things to apply. This is a feature. Used the module identifer to generate prototypes for the module load, unload and stat functions. Removed the few prototypes for these that already existed. Used the module identifier to generate a unique struct tag in MOD_DEV(). This should probably be done for all the MOD_*() macros. Moved the trailing semicolon from the MOD_*() macro definitions to the macro invocations that didn't already (bogusly) have it. Staticized the module load and unload functions. Added function return types for the module load, unload and stat functions. lkm/ibcs2/ibcs2.c: Included <sys/sysproto.h> to get everything prototyped. Cleaned up #includes. lkm/ibcs2/ipfw.c: Cleaned up #includes. lkm/linux/linux.c: The module name had to change from "linux_emulator" to "linux_mod" to be automatically generated. Cleaned up #includes. lkm/syscons/*/*_saver.c: Completed delcarations of function pointers. sys/i386/isa/atapi.c: The module name had to change from "atapi" to "atapi_mod" to be automatically generated. sys/i386/isa/wcd.c: Used the fixed MOD_DEV(). This module has two devices and expanded the macro in the source instead of fixing it. The module names had to change from "wcd" and "rwcd" to "wcd_mod" and "rwcd_mod" to be automatically generated. sys/pccard/pcic.c: The module name had to change from "pcic" to "pcic_mod" to be automatically generated.
1995-11-14 07:35:57 +00:00
MOD_EXEC(linux, -1, (struct execsw*)&linux_execsw);
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
linux_interp now moved into sys/i386/linux/linux_sysvec.c, but still connected at load and unload time from here.
1996-03-10 22:43:37 +00:00
extern Elf32_Interp_info linux_interp;
First attempt at FreeBSD & Linux ELF support. Compile and link a new kernel, that will give native ELF support, and provide the hooks for other ELF interpreters as well. To make native ELF binaries use John Polstras elf-kit-1.0.1.. For the time being also use his ld-elf.so.1 and put it in /usr/libexec. The Linux emulator has been enhanced to also run ELF binaries, it is however in its very first incarnation. Just get some Linux ELF libs (Slackware-3.0) and put them in the prober place (/compat/linux/...). I've ben able to run all the Slackware-3.0 binaries I've tried so far. (No it won't run quake yet :)
1996-03-10 08:42:54 +00:00
Changed the first (name) arg of MOD_DEV(), MOD_EXEC() and MOD_MISC() from a string to an identifier so that it can be used to generate declarations and strings. It's much easier to stringize an identifier than to identifize a string. A uniform naming scheme must be used for the automatically generated things to apply. This is a feature. Used the module identifer to generate prototypes for the module load, unload and stat functions. Removed the few prototypes for these that already existed. Used the module identifier to generate a unique struct tag in MOD_DEV(). This should probably be done for all the MOD_*() macros. Moved the trailing semicolon from the MOD_*() macro definitions to the macro invocations that didn't already (bogusly) have it. Staticized the module load and unload functions. Added function return types for the module load, unload and stat functions. lkm/ibcs2/ibcs2.c: Included <sys/sysproto.h> to get everything prototyped. Cleaned up #includes. lkm/ibcs2/ipfw.c: Cleaned up #includes. lkm/linux/linux.c: The module name had to change from "linux_emulator" to "linux_mod" to be automatically generated. Cleaned up #includes. lkm/syscons/*/*_saver.c: Completed delcarations of function pointers. sys/i386/isa/atapi.c: The module name had to change from "atapi" to "atapi_mod" to be automatically generated. sys/i386/isa/wcd.c: Used the fixed MOD_DEV(). This module has two devices and expanded the macro in the source instead of fixing it. The module names had to change from "wcd" and "rwcd" to "wcd_mod" and "rwcd_mod" to be automatically generated. sys/pccard/pcic.c: The module name had to change from "pcic" to "pcic_mod" to be automatically generated.
1995-11-14 07:35:57 +00:00
static int
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
linux_load(struct lkm_table *lkmtp, int cmd)
{
First attempt at FreeBSD & Linux ELF support. Compile and link a new kernel, that will give native ELF support, and provide the hooks for other ELF interpreters as well. To make native ELF binaries use John Polstras elf-kit-1.0.1.. For the time being also use his ld-elf.so.1 and put it in /usr/libexec. The Linux emulator has been enhanced to also run ELF binaries, it is however in its very first incarnation. Just get some Linux ELF libs (Slackware-3.0) and put them in the prober place (/compat/linux/...). I've ben able to run all the Slackware-3.0 binaries I've tried so far. (No it won't run quake yet :)
1996-03-10 08:42:54 +00:00
if (elf_insert_interp(&linux_interp))
uprintf("Could not install ELF interpreter entry\n");
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
uprintf("Linux emulator installed\n");
return 0;
}
Changed the first (name) arg of MOD_DEV(), MOD_EXEC() and MOD_MISC() from a string to an identifier so that it can be used to generate declarations and strings. It's much easier to stringize an identifier than to identifize a string. A uniform naming scheme must be used for the automatically generated things to apply. This is a feature. Used the module identifer to generate prototypes for the module load, unload and stat functions. Removed the few prototypes for these that already existed. Used the module identifier to generate a unique struct tag in MOD_DEV(). This should probably be done for all the MOD_*() macros. Moved the trailing semicolon from the MOD_*() macro definitions to the macro invocations that didn't already (bogusly) have it. Staticized the module load and unload functions. Added function return types for the module load, unload and stat functions. lkm/ibcs2/ibcs2.c: Included <sys/sysproto.h> to get everything prototyped. Cleaned up #includes. lkm/ibcs2/ipfw.c: Cleaned up #includes. lkm/linux/linux.c: The module name had to change from "linux_emulator" to "linux_mod" to be automatically generated. Cleaned up #includes. lkm/syscons/*/*_saver.c: Completed delcarations of function pointers. sys/i386/isa/atapi.c: The module name had to change from "atapi" to "atapi_mod" to be automatically generated. sys/i386/isa/wcd.c: Used the fixed MOD_DEV(). This module has two devices and expanded the macro in the source instead of fixing it. The module names had to change from "wcd" and "rwcd" to "wcd_mod" and "rwcd_mod" to be automatically generated. sys/pccard/pcic.c: The module name had to change from "pcic" to "pcic_mod" to be automatically generated.
1995-11-14 07:35:57 +00:00
static int
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
linux_unload(struct lkm_table *lkmtp, int cmd)
{
First attempt at FreeBSD & Linux ELF support. Compile and link a new kernel, that will give native ELF support, and provide the hooks for other ELF interpreters as well. To make native ELF binaries use John Polstras elf-kit-1.0.1.. For the time being also use his ld-elf.so.1 and put it in /usr/libexec. The Linux emulator has been enhanced to also run ELF binaries, it is however in its very first incarnation. Just get some Linux ELF libs (Slackware-3.0) and put them in the prober place (/compat/linux/...). I've ben able to run all the Slackware-3.0 binaries I've tried so far. (No it won't run quake yet :)
1996-03-10 08:42:54 +00:00
if (elf_remove_interp(&linux_interp))
uprintf("Could not deinstall ELF interpreter entry\n");
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
uprintf("Linux emulator removed\n");
return 0;
}
Changed the first (name) arg of MOD_DEV(), MOD_EXEC() and MOD_MISC() from a string to an identifier so that it can be used to generate declarations and strings. It's much easier to stringize an identifier than to identifize a string. A uniform naming scheme must be used for the automatically generated things to apply. This is a feature. Used the module identifer to generate prototypes for the module load, unload and stat functions. Removed the few prototypes for these that already existed. Used the module identifier to generate a unique struct tag in MOD_DEV(). This should probably be done for all the MOD_*() macros. Moved the trailing semicolon from the MOD_*() macro definitions to the macro invocations that didn't already (bogusly) have it. Staticized the module load and unload functions. Added function return types for the module load, unload and stat functions. lkm/ibcs2/ibcs2.c: Included <sys/sysproto.h> to get everything prototyped. Cleaned up #includes. lkm/ibcs2/ipfw.c: Cleaned up #includes. lkm/linux/linux.c: The module name had to change from "linux_emulator" to "linux_mod" to be automatically generated. Cleaned up #includes. lkm/syscons/*/*_saver.c: Completed delcarations of function pointers. sys/i386/isa/atapi.c: The module name had to change from "atapi" to "atapi_mod" to be automatically generated. sys/i386/isa/wcd.c: Used the fixed MOD_DEV(). This module has two devices and expanded the macro in the source instead of fixing it. The module names had to change from "wcd" and "rwcd" to "wcd_mod" and "rwcd_mod" to be automatically generated. sys/pccard/pcic.c: The module name had to change from "pcic" to "pcic_mod" to be automatically generated.
1995-11-14 07:35:57 +00:00
int
Do a pass over the broken LKM's and update them to use the "new" convention of having their entry point named "<modname>_mod"". Symorder is enforcing this when the current bsd.kmod.mk is installed. I've not tested all these, but at least they all compile now. Reattach them to the makefile. Note that the change that I made to symorder needs to be compiled and installed before any LKM's will work - the last version was corrupting the relocation tables. A "make world" will to this, but if you manually run a make on the lkm's you'll need to take care of it by hand.
1995-10-28 12:35:14 +00:00
linux_mod(struct lkm_table *lkmtp, int cmd, int ver)
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
{
Replaced nosys() by lkm_nullcmd(). Always call lkm load/unload/stat functions instead of skipping the call if the function is nosys(). nosys() returned the wrong value as well as having the wrong type.
1995-11-13 07:19:10 +00:00
DISPATCH(lkmtp, cmd, ver, linux_load, linux_unload, lkm_nullcmd);
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
}
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