freebsd-dev/sys/i386/svr4/svr4_locore.s

#include "svr4_assym.h"			/* system definitions */
#include <machine/asmacros.h>		/* miscellaneous asm macros */

#include <compat/svr4/svr4_syscall.h>		/* system call numbers */

/* $FreeBSD$ */
	
NON_GPROF_ENTRY(svr4_sigcode)
	call	*SVR4_SIGF_HANDLER(%esp)
	leal	SVR4_SIGF_UC(%esp),%eax	/* ucp (the call may have clobbered the
					   copy at SIGF_UCP(%esp)) */
#ifdef VM86
#warning "VM86 doesn't work yet - do you really want this?"
	testl	$PSL_VM,SVR4_UC_EFLAGS(%eax)
	jnz	1f
#endif
	mov	SVR4_UC_GS(%eax),%gs
1:	pushl	%eax			# pointer to ucontext
	pushl	$1			# set context
	movl	$svr4_sys_context,%eax
	int	$0x80	 		# enter kernel with args on stack
0:	jmp	0b

	ALIGN_TEXT
svr4_esigcode:

	.data
	.globl	svr4_szsigcode
svr4_szsigcode:
	.long	svr4_esigcode - svr4_sigcode

	.text
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00			`#include "svr4_assym.h" /* system definitions */`
			`#include <machine/asmacros.h> /* miscellaneous asm macros */`

Cleanup after repo copy of sys/svr4 to sys/compat/svr4. 2000-08-31 22:54:09 +00:00			`#include <compat/svr4/svr4_syscall.h> /* system call numbers */`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00
$Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00			`/* $FreeBSD$ */`
Add $Id$ tags. Clean-up some unused (or to-be-used) variables in svr4_getcontext() 1999-07-30 12:47:17 +00:00
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00			`NON_GPROF_ENTRY(svr4_sigcode)`
AT&T asm syntax requires a leading '*' in front of the operand for indirect calls and jumps. 2000-05-10 01:21:15 +00:00			`call *SVR4_SIGF_HANDLER(%esp)`
Assembly files put thru the C preprocessor need to have C style comments. 2003-04-21 16:30:12 +00:00			`leal SVR4_SIGF_UC(%esp),%eax /* ucp (the call may have clobbered the`
			`copy at SIGF_UCP(%esp)) */`
Back out last commit (did I get all of them?) Submitted by: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 1999-06-02 15:35:46 +00:00			`#ifdef VM86`
Include #warning about unconditionalizing VM86, which isn't supposed to work in the svr4 emulator yet. 2000-01-15 15:23:14 +00:00			`#warning "VM86 doesn't work yet - do you really want this?"`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00			`testl $PSL_VM,SVR4_UC_EFLAGS(%eax)`
			`jnz 1f`
Back out last commit (did I get all of them?) Submitted by: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 1999-06-02 15:35:46 +00:00			`#endif`
Change some movl's to mov's. Newer GAS no longer accept 'movl' instructions for moving between a segment register and a 32-bit memory location. Looked at by: jhb 2009-01-31 11:37:21 +00:00			`mov SVR4_UC_GS(%eax),%gs`
Add a per-signal flag to mark handlers registered with osigaction, so we can provide the correct context to each signal handler. Fix broken sigsuspend(): don't use p_oldsigmask as a flag, use SAS_OLDMASK as we did before the linuxthreads support merge (submitted by bde). Move ps_sigstk from to p_sigacts to the main proc structure since signal stack should not be shared among threads. Move SAS_OLDMASK and SAS_ALTSTACK flags from sigacts::ps_flags to proc::p_flag. Move PS_NOCLDSTOP and PS_NOCLDWAIT flags from proc::p_flag to procsig::ps_flag. Reviewed by: marcel, jdp, bde 1999-10-11 20:33:17 +00:00			`1: pushl %eax # pointer to ucontext`
			`pushl $1 # set context`
Remove the leading underscore from all symbols defined in x86 asm and used in C or vice versa. The elf compiler uses the same names for both. Remove asnames.h with great prejudice; it has served its purpose. Note that this does not affect the ability to generate an aout kernel due to gcc's -mno-underscores option. moral support from: peter, jhb 2001-02-25 06:29:04 +00:00			`movl $svr4_sys_context,%eax`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00			`int $0x80 # enter kernel with args on stack`
Add a per-signal flag to mark handlers registered with osigaction, so we can provide the correct context to each signal handler. Fix broken sigsuspend(): don't use p_oldsigmask as a flag, use SAS_OLDMASK as we did before the linuxthreads support merge (submitted by bde). Move ps_sigstk from to p_sigacts to the main proc structure since signal stack should not be shared among threads. Move SAS_OLDMASK and SAS_ALTSTACK flags from sigacts::ps_flags to proc::p_flag. Move PS_NOCLDSTOP and PS_NOCLDWAIT flags from proc::p_flag to procsig::ps_flag. Reviewed by: marcel, jdp, bde 1999-10-11 20:33:17 +00:00			`0: jmp 0b`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00
Replace ".align 2" with "ALIGN_TEXT" as per recent discussion re: the linux emulator. Suggested by: bde 1999-08-25 22:55:56 +00:00			`ALIGN_TEXT`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00			`svr4_esigcode:`

			`.data`
Remove the leading underscore from all symbols defined in x86 asm and used in C or vice versa. The elf compiler uses the same names for both. Remove asnames.h with great prejudice; it has served its purpose. Note that this does not affect the ability to generate an aout kernel due to gcc's -mno-underscores option. moral support from: peter, jhb 2001-02-25 06:29:04 +00:00			`.globl svr4_szsigcode`
			`svr4_szsigcode:`
			`.long svr4_esigcode - svr4_sigcode`
Emulator KLD for SysVR4 executables grabbed from NetBSD. See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list. 1999-01-30 06:29:48 +00:00
			`.text`