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authorUlrich Drepper <drepper@redhat.com>1997-07-12 23:35:19 +0000
committerUlrich Drepper <drepper@redhat.com>1997-07-12 23:35:19 +0000
commitf21acc89c06c14160eab88246e9dbe0b17eb5f89 (patch)
tree096a11e16faed78c69e77fd79b7c8bb4dc0bd051 /sysdeps/unix/sysv/linux/mips/clone.S
parent2d7da676f38bc00f40d2b604036c0295c156529e (diff)
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1997-07-13 01:18  Ulrich Drepper  <drepper@cygnus.com>

	* setjmp/setjmp.h: Define _setjmp and _longjmp also if __USE_XOPEN.

	* sysdeps/unix/sysv/linux/bits/ipc.h: Fix comment.
	* sysdeps/unix/sysv/linux/bits/msq.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/sem.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/shm.h: Likewise.

	* time/Makefile (routines): Add getdate.
	* time/time.h: Add prototype for getdate and getdate_r.
	* time/getdate.c: New file.
	Provided by Mark Kettenis <kettenis@phys.uva.nl>.

1997-06-30 14:49  H.J. Lu  <hjl@gnu.ai.mit.edu>

	From Ralf Baechle <ralf@informatik.uni-koblenz.de> on
	Sat Jun 21 18:11:21 1997:

	* sysdeps/unix/sysv/linux/syscalls.list (swapon): Add __swapon alias.
	(swapoff): New.

	* elf/Makefile: Add linker script support.
	(headers): Add bits/dlfcn.h.

	* elf/dl-load.c (MAP_BASE_ADDR): New.

	* elf/dlfcn.h: Include <bits/dlfcn.h>.

	* elf/elf.h: Add MIPS support.

	* sysdeps/generic/Dist: Add entry.h.
	* sysdeps/generic/entry.h: New, define the entry symbol.

	* elf/rtld.c (_start): Include <entry.h>.  Change to ENTRY_POINT.
	* sysdeps/generic/dl-sysdep.c (_start): Likewise.
	* mips/elf/start.S (_start): Likewise.

	* sysdeps/mips/bsd-_setjmp.S: Fix PIC.
	* sysdeps/mips/bsd-setjmp.S: Likewise.
	* sysdeps/mips/setjmp.S: Likewise.
	* mips/elf/start.S: Likewise.
	* sysdeps/unix/mips/brk.S: Likewise.
	* sysdeps/unix/mips/sysdep.S: Likewise.
	* sysdeps/unix/mips/sysdep.h: Likewise.
	* sysdeps/unix/mips/wait.S: Likewise.

	* sysdeps/mips/dl-machine.h: Update for Linux/MIPS.
	* sysdeps/mips/fpu_control.h: Likewise.

	* sysdeps/generic/bits/dlfcn.h: New file.

	* sysdeps/mips/rtld-ldscript.in: New for Linux/MIPS.
	* sysdeps/mips/rtld-parms: Likewise.
	* sysdeps/mips/bits/dlfcn.h: Likewise.
	* sysdeps/mips/mips64/rtld-parms: Likewise.
	* sysdeps/mips/mipsel/rtld-parms: Likewise.
	* sysdeps/unix/sysv/linux/mips/Dist: Likewise.
	* sysdeps/unix/sysv/linux/mips/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/entry.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/fpregdef.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel_stat.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel_termios.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/regdef.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sgidefs.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/ustat.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/xmknod.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/endian.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/fcntl.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/ioctl-types.h:
	* sysdeps/unix/sysv/linux/mips/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/shm.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/signum.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/socket.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/stat.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/statfs.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/time.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/acct.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/asm.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/cachectl.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/fpregdef.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/procfs.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/regdef.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/syscall.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sys/sysmips.h: Likewise.

1997-04-09 19:05  H.J. Lu (hjl@gnu.ai.mit.edu)

	* isomac.c (xstrndup): New, use it instead of strndup ().

1997-07-02 08:55  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/i386/dl-machine.h (elf_machine_rel): Print
	the program name for different sizes.

1997-07-10 15:47  Fila Kolodny  <fila@ibi.com>

	* nis/ypclnt.c: Change references to MAXHOSTNAMELEN to NIS_MAXNAMELEN.
	Add include of rpcsvc/nis.h.
	* inet/getnameinfo.c: Delete references to MAXHOSTNAMELEN.
	* sysdeps/posix/getaddrinfo.c: Likewise.
	Change size of variable buffer to be big enough to hold an IPv6
	address in printable format.

1997-07-12 18:47  Ulrich Drepper  <drepper@cygnus.com>

	* assert/assert.h [!NDEBUG] (assert, assert_perror): Don't use ||
	and && in tests to allow use in C++ code which overloads these
	operators.  Reported by Istvan Marko <istvan@cmdmail.amd.com>.

	* configure.in: Move mips64* recognition before mips*.
	Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>.

1997-07-03 20:44  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules (lib%.so, $(common-objpfx)libc.so): Don't use
	automatic variables in dependency lists.
	(build-shlib): Always filter out the version script file.
	* extra-lib.mk ($(objpfx)$(lib).so): Depend on version script.

1997-07-12 17:56  Ulrich Drepper  <drepper@cygnus.com>

	* login/login.c (tty_name): Test return value of ttyname_r for !=
	0, not < 0.
	* misc/ttyslot.c (ttyslot): Test return value of ttyname_r for ==
	0, not >= 0.
	* sysdeps/unix/getlogin.c (getlogin): Test return value of
	ttyname_r for != 0.
	* sysdeps/unix/getlogin_r.c (getlogin_r): Likewise.

1997-07-10  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* login/utmp_file.c (getutline_r_file): Fix type: compare with
	*result.

1997-07-11 00:21  Mark Kettenis  <kettenis@phys.uva.nl>

	* login/Makefile (headers): Add utmpx.h and bits/utmpx.h.

1997-07-09 19:21  Mark Kettenis  <kettenis@phys.uva.nl>

	* login/programs/utmpd.c, login/programs/database.c,
	login/programs/request.c: Prepare messages for
	internationalization.

	* login/programs/utmpd.c:
	(main): Change handling of errors in opening the database.
	* login/programs/database.c:
	(open_database, synchronize_dtatabase, initialize_database):
	Properly handle errors.
	(get_mtime): Use fstat instead of stat.  All callers changed.

	* login/getutent_r.c: Make setutxent a weak alias for __setutxent.
	* login/getutent.c: Rename getutent to __getutent and make
	getutent a weak alias.
	Make getutxent a weak alias for	__getutent.
	* login/utmpx.h: New file.
	* sysdeps/gnu/bits/utmp.h: Cleanup.  Added comments.
	* sysdeps/gnu/bits/utmpx.h: New file.

	* stdio-common/strops.c: Partialy undo last change.  Will need
	more investigation.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/clone.S')
-rw-r--r--sysdeps/unix/sysv/linux/mips/clone.S125
1 files changed, 125 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/clone.S b/sysdeps/unix/sysv/linux/mips/clone.S
new file mode 100644
index 0000000000..357f70e47f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/clone.S
@@ -0,0 +1,125 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ralf Baechle <ralf@gnu.ai.mit.edu>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* clone() is even more special than fork() as it mucks with stacks
+   and invokes a function in the right context after its all over.  */
+
+#include <sys/asm.h>
+#include <asm/unistd.h>
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+
+/* int clone(int (*fn)(), void *child_stack, int flags, int nargs, ...) */
+
+#define FRAMESZ  4*SZREG
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+#define MAX_REG_ARGS 4
+#else
+#define MAX_REG_ARGS 6
+#endif
+
+	.text
+NESTED(__clone,4*SZREG,sp)
+#ifdef __PIC__
+	.set		noreorder
+	.cpload		$25
+	.set		reorder
+	.cprestore	16
+#endif
+	PTR_SUBIU	sp,FRAMESZ
+#ifdef PROF
+	.set		noat
+	move		$1,ra
+	jal		_mcount
+	.set		at
+#endif
+
+	/* Sanity check arguments.  */
+	li		v0,EINVAL
+	beqz		a0,error	/* no NULL function pointers */
+	beqz		a1,error	/* no NULL stack pointers */
+	bltz		a3,error	/* no negative argument counts */
+
+	/* Allocate space on the new stack and copy args over */
+	move		t0,a3		# save nargs for __thread_start
+	PTR_SLL		t1,a3,PTR_SCALESHIFT
+	PTR_ADDU	t1,a3,sp
+1:	REG_L		t2,-SZREG(t1)
+	PTR_SUBIU	t1,SZREG
+	REG_S		t2,-SZREG(a1)
+	PTR_SUBIU	a3,1
+	PTR_SUBIU	a1,SZREG
+	bnez		a3,1b
+
+	/* Do the system call */
+	move		t9,a0		# get fn ptr out of the way
+	move		a0,a2
+	li		v0,__NR_clone
+	syscall
+
+	bnez		a3,error
+	beqz		v0,__thread_start
+
+	/* Successful return from the parent */
+	PTR_ADDIU	sp,FRAMESZ
+	ret
+
+	/* Something bad happened -- no child created */
+error:
+	PTR_ADDIU	sp,FRAMESZ
+#ifdef PIC
+	la		t9,__syscall_error
+	jr		t9
+#else
+	j		__syscall_error
+#endif
+	END(__clone)
+
+/* Load up the arguments to the function.  Put this block of code in
+   its own function so that we can terminate the stack trace with our
+   debug info.
+
+   At this point we have t0=nargs, t9=fn, sp=&arg[0].  */
+
+NESTED(__thread_start,32,sp)
+	/* Stackframe has been created on entry of clone() */
+	/* Calculate address of jump into argument loading code */
+	li		t1,MAX_REG_ARGS
+	slt		t0,t1,t2       /* max MAX_REG_ARGS args in registers */
+	MOVN		(t2,t1,t0)
+	la		v0,arg0
+	PTR_SLL		t1,t0,PTR_SCALESHIFT
+	PTR_SUBU	v0,t1
+	jr		v0
+
+	/* Load the integer register arguments */
+	REG_L		a0,SZREG(sp)
+arg0:
+
+	/* Call the user's function */
+	jalr		t9
+
+	/* Call _exit rather than doing it inline for breakpoint purposes */
+	move		a0,v0
+	jal		_exit
+
+	END(__thread_start)
+
+weak_alias(__clone, clone)