lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-07-29 11:41:21 +03:00
Code Activity

Update.

Browse Source 
2004-12-07  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Add support for
	NPTL where the PID is stored at userlevel and needs to be reset when
	CLONE_THREAD is not used.  Restore gp before calling _exit.
This commit is contained in:
Ulrich Drepper
2004-12-07 20:34:18 +00:00
parent 2da9a6a1a7
commit 484cc8018b
8 changed files with 57 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
sysdeps/unix/sysv/linux/ia64/clone2.S
View File

@ -30,7 +30,7 @@
ENTRY(__clone2)
.prologue
alloc r2=ar.pfs,8,0,6,0
alloc r2=ar.pfs,8,1,6,0
cmp.eq p6,p0=0,in0
mov r8=EINVAL
mov out0=in3 /* Flags are first syscall argument. */
@ -63,15 +63,34 @@ ENTRY(__clone2)
cmp.eq CHILD,PARENT=0,r8 /* Are we the child? */
(p6) br.cond.spnt.many __syscall_error
;;
(CHILD) ld8 out1=[in0],8 /* Retrieve code pointer. */
(CHILD) mov out0=in4 /* Pass proper argument to fn */
(CHILD) mov loc0=gp
(PARENT) ret
;;
#ifdef RESET_PID
tbit.nz p6,p0=in3,16 /* CLONE_THREAD */
tbit.z p7,p10=in3,8 /* CLONE_VM */
(p6) br.cond.dptk 1f
;;
mov r15=SYS_ify (getpid)
(p10) addl r8=-1,r0
(p7) break __BREAK_SYSCALL
;;
add r9=PID,r13
add r10=TID,r13
;;
st4 [r9]=r8
st4 [r10]=r8
;;
#endif
1: ld8 out1=[in0],8 /* Retrieve code pointer. */
mov out0=in4 /* Pass proper argument to fn */
;;
ld8 gp=[in0] /* Load function gp. */
mov b6=out1
br.call.dptk.many rp=b6 /* Call fn(arg) in the child */
;;
mov out0=r8 /* Argument to _exit */
mov gp=loc0
.globl HIDDEN_JUMPTARGET(_exit)
br.call.dpnt.many rp=HIDDEN_JUMPTARGET(_exit)
/* call _exit with result from fn. */