From 0c5ecdc449ce581b56090758d5bb5673763ea909 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 20 Jan 1997 02:49:49 +0000 Subject: update from main arhive 970119 Mon Jan 20 03:02:50 1997 Ulrich Drepper * Make-dist: Update and reformat copyright. * Makeconfig: Likewise. * assert/Makefile: Likewise. * bare/Makefile: Likewise. * ctype/Makefile: Likewise. * dirent/Makefile: Likewise. * gmon/Makefile: Likewise. * gnulib/Makefile: Likewise. * grp/Makefile: Likewise. * hurd/Makefile: Likewise. * intl/Makefile: Likewise. * mach/Makefile: Likewise. * malloc/Makefile: Likewise. * manual/Makefile: Likewise. * math/Makefile: Likewise. * po/Makefile: Likewise. * pwd/Makefile: Likewise. * resource/Makefile: Likewise. * setjmp/Makefile: Likewise. * socket/Makefile: Likewise. * string/Makefile: Likewise. * sunrpc/Makefile: Likewise. * sysdeps/alpha/Makefile: Likewise. * sysdeps/gnu/Makefile: Likewise. * sysdeps/m68k/fpu/switch/Makefile: Likewise. * sysdeps/m68k/fpu/switch/68881-sw.h: Likewise. * sysdeps/m68k/fpu/switch/switch.c: Likewise. * sysdeps/mach/Makefile: Likewise. * sysdeps/hurd/Makefile: Likewise. * sysdeps/sparc/Makefile: Likewise. * sysdeps/standalone/i960/nindy960/Makefile: Likewise. * sysdeps/standalone/m68k/m68020/mvme136/Makefile: Likewise. * sysdeps/unix/common/Makefile: Likewise. * sysdeps/unix/sysv/Makefile: Likewise. * sysdeps/unix/sysv/irix4/Makefile: Likewise. * sysdeps/unix/sysv/sco3.2/Makefile: Likewise. * sysdeps/unix/sysv/sysv4/Makefile: Likewise. * sysdeps/vax/Makefile: Likewise. * sysvipc/Makefile: Likewise. * wcsmbs/Makefile: Likewise. * wctype/Makefile: Likewise. * elf/rtld.c (dl_main): Objects in LD_PRELOAD environment variable are separated according to Sun docs by white space not colon. * locale/C-time.c (_nl_C_LC_TIME): Use empty string to initialize fields which are not defined for the C locale. * sysdeps/m68k/fpu/switch/Makefile: Don't use ansidecl.h in constructed files. * sysdeps/m68k/fpu/switch/68881-sw.h: Likewise. * sysdeps/m68k/fpu/switch/switch.c: Likewise. Sun Jan 19 19:43:31 1997 Andreas Jaeger * time/strptime.c: Provide prototype for strptime_internal. Sun Jan 19 23:46:27 1997 Ulrich Drepper * glibcbug.in: We don't guarantee confidential handling. Set field to always contain `no'. Sun Jan 19 21:28:01 1997 Philippe De Muyter * intl/explodename.c: Include sys/types.h. * intl/l10nflist.c: Likewise. Sat Jan 18 22:15:26 1997 Richard Henderson * config.make.in (install_root): New variable to make it easy to install glibc somewhere other than /. * shlib-versions: alpha-*-linux-* libc=6.1. Since sigset_t no longer fits in a register, we can't pass in the thread's initial mask so easily. Take this opportunity to simplify the clone implementation by only accepting a single void* argument. * sysdeps/unix/sysv/linux/alpha/clone.S: Only take one argument. * sysdeps/unix/sysv/linux/i386/clone.S: Likewise. * sysdeps/unix/sysv/linux/m68k/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/clone.S: Likewise. * sysdeps/unix/sysv/linux/schedbits.h: Update clone prototypes. * sysdeps/unix/sysv/linux/alpha/ioctl-types.h: Remove. Default Linux version should be sufficient. * sysdeps/unix/sysv/linux/alpha/sigprocmask.c: The osf_sigprocmask system call wants the sigset dereferenced. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add entries for __syscall_ustat and __syscall_xmknod. * sysdeps/unix/sysv/linux/alpha/xmknod.c: Include sys/sysmacros.h. * sysdeps/unix/sysv/linux/sigset.h: Use longs instead of ints. * sysdeps/unix/sysv/linux/tcsetattr.c: Fix pointer dereferences. * sysdeps/unix/sysv/linux/alpha/sigsuspend.c: Add comment about dependency to kernel type. * sysdeps/unix/sysv/linux/alpha/termbits.h: Correct comment. --- sysdeps/unix/sysv/linux/alpha/clone.S | 54 ++++++----------------------------- 1 file changed, 9 insertions(+), 45 deletions(-) (limited to 'sysdeps/unix/sysv/linux/alpha/clone.S') diff --git a/sysdeps/unix/sysv/linux/alpha/clone.S b/sysdeps/unix/sysv/linux/alpha/clone.S index 03ecddc727..261bd81e57 100644 --- a/sysdeps/unix/sysv/linux/alpha/clone.S +++ b/sysdeps/unix/sysv/linux/alpha/clone.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1996 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson , 1996. @@ -24,15 +24,11 @@ #define _ERRNO_H 1 #include -/* int clone(int (*fn)(), void *child_stack, int flags, int nargs, ...) */ +/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg) */ .text ENTRY(__clone) - lda sp,-16(sp) - .frame sp,16,$26,0 - /* Save rest of argument registers for varargs-type work. */ - stq a4,0(sp) - stq a5,8(sp) + .frame sp,0,ra,0 #ifdef PROF .set noat lda AT, _mcount @@ -42,24 +38,13 @@ ENTRY(__clone) .prologue 1 /* Sanity check arguments. */ - sextl a3,a3 ldiq v0,EINVAL beq a0,$error /* no NULL function pointers */ beq a1,$error /* no NULL stack pointers */ - blt a3,$error /* no negative argument counts */ - - /* Allocate space on the new stack and copy args over */ - mov a3,t0 /* save nargs for thread_start */ - s8addq a3,sp,t1 -1: ldq t2,-8(t1) - subq t1,8,t1 - stq t2,-8(a1) - subq a3,1,a3 - subq a1,8,a1 - bne a3,1b /* Do the system call */ mov a0,pv /* get fn ptr out of the way */ + mov a3,a4 /* get fn arg out of the way */ mov a2,a0 ldiq v0,__NR_clone call_pal PAL_callsys @@ -68,23 +53,19 @@ ENTRY(__clone) beq v0,thread_start /* Successful return from the parent */ - lda sp,16(sp) ret /* Something bad happened -- no child created */ $error: br gp,1f 1: ldgp gp,0(gp) - lda sp,16(sp) jmp zero,__syscall_error 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, $pv=fn, $sp=&arg[0]. */ + debug info. */ .ent thread_start thread_start: @@ -92,28 +73,8 @@ thread_start: mov zero,fp .prologue 0 - /* Calculate address of jump into argument loading code */ - cmple t0,6,t2 /* no more than 6 args in registers */ - cmoveq t2,6,t0 - br v0,1f /* find address of arg0 */ -1: lda v0,$arg0-1b(v0) - s4addq t0,zero,t1 - subq v0,t1,v0 - jmp (v0) - - /* Load the integer register arguments */ - ldq a5,40(sp) - ldq a4,32(sp) - ldq a3,24(sp) - ldq a2,16(sp) - ldq a1,8(sp) - ldq a0,0(sp) -$arg0: - - /* Adjust stack to remove the arguments we just loaded */ - s8addq t0,sp,sp - /* Call the user's function */ + mov a4,a0 jsr ra,(pv) ldgp gp,0(ra) @@ -121,6 +82,9 @@ $arg0: mov v0,a0 jsr ra,_exit + /* Die horribly. */ + halt + .end thread_start weak_alias(__clone, clone) -- cgit 1.4.1