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author | Ulrich Drepper <drepper@redhat.com> | 1996-08-15 01:23:29 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1996-08-15 01:23:29 +0000 |
commit | 706074a5bb120f78f4fd8bc40c6814f14e17e530 (patch) | |
tree | c5da6add27af818bf38e5d9e4f9b3c2dedc718ff /sysdeps/unix/sysv | |
parent | 046e3001f9370904c1efd764cfe49c472818ddfb (diff) | |
download | glibc-706074a5bb120f78f4fd8bc40c6814f14e17e530.zip glibc-706074a5bb120f78f4fd8bc40c6814f14e17e530.tar.gz glibc-706074a5bb120f78f4fd8bc40c6814f14e17e530.tar.bz2 |
update from main archive 960814cvs/libc-960815
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/clone.S | 1 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/m68k/clone.S | 75 |
2 files changed, 76 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/clone.S b/sysdeps/unix/sysv/linux/i386/clone.S index 02f5619..b60bc8e 100644 --- a/sysdeps/unix/sysv/linux/i386/clone.S +++ b/sysdeps/unix/sysv/linux/i386/clone.S @@ -71,6 +71,7 @@ ENTRY(__clone) thread_start: subl %ebp,%ebp /* terminate the stack frame */ call *%ebx + pushl %eax #ifdef PIC call _exit@PLT #else diff --git a/sysdeps/unix/sysv/linux/m68k/clone.S b/sysdeps/unix/sysv/linux/m68k/clone.S new file mode 100644 index 0000000..64077e0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/clone.S @@ -0,0 +1,75 @@ +/* Copyright (C) 1996 Free Software Foundation, Inc. + Contributed by Andreas Schwab (schwab@issan.informatik.uni-dortmund.de) + +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., 675 Mass Ave, +Cambridge, MA 02139, 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 <sysdep.h> +#include <errnos.h> + +/* int clone (int (*fn) (), void *child_stack, int flags, int nargs, ...) */ + + .text +ENTRY (__clone) + /* Sanity check arguments. */ + movel #-EINVAL, %d0 + movel 4(%sp), %a0 /* no NULL function pointers */ + tstl %a0 + jeq syscall_error + movel 8(%sp), %a1 /* no NULL stack pointers */ + tstl %a1 + jeq syscall_error + movel 16(%sp), %d1 /* no negative argument counts */ + jmi syscall_error + + /* Allocate space on the new stack and copy args over */ + movel %d1, %d0 + negl %d0 + lea (%a1,%d0.l*4), %a1 + jeq 2f +1: movel 16(%sp,%d1.l*4), -4(%a1,%d1.l*4) + subql #1, %d1 + jne 1b +2: + + /* Do the system call */ + exg %d2, %a1 /* save %d2 and get stack pointer */ + movel 12(%sp), %d1 /* get flags */ + movel #SYS_ify (clone), %d0 + trap #0 + exg %d2, %a1 /* restore %d2 */ + + tstl %d0 + jmi syscall_error + jeq thread_start + + rts + + SYSCALL_ERROR_HANDLER + +thread_start: + subl %fp, %fp /* terminate the stack frame */ + jsr (%a0) + movel %d0, -(%sp) +#ifdef PIC + bsrl _exit@PLTPC +#else + jbsr _exit +#endif + +weak_alias (__clone, clone) |