diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-32/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/clone.S | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S index c93570ed72..23fb4647ee 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S +++ b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S @@ -24,20 +24,24 @@ #define _ERRNO_H 1 #include <bits/errno.h> -/*int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg);*/ -/* sys_clone(void *child_stack, unsigned long flags) */ +/* int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, + void *tls, pid_t *parent_tid, pid_t *child_tid); */ +/* sys_clone (void *child_stack, unsigned long flags, + pid_t *parent_tid, pid_t *child_tid, void *tls); */ .text ENTRY(__clone) /* Sanity check arguments & move registers */ + lr %r0,%r5 /* move *arg out of the way */ ltr %r1,%r2 /* no NULL function pointers */ lhi %r2,-EINVAL jz SYSCALL_ERROR_LABEL ltr %r3,%r3 /* no NULL stack pointers */ jz SYSCALL_ERROR_LABEL - /* move child_stack and flags, then call SVC */ + /* set up registers, then call SVC */ lr %r2,%r3 lr %r3,%r4 + lm %r4,%r5,96(%r15) svc SYS_ify(clone) ltr %r2,%r2 /* check return code */ jm SYSCALL_ERROR_LABEL @@ -45,10 +49,10 @@ ENTRY(__clone) br %r14 thread_start: - /* fn is in gpr 1, arg in gpr 5 */ - lr %r2,%r5 /* set first parameter to void *arg */ - sr %r11,%r11 /* terminate the stack frame */ + /* fn is in gpr 1, arg in gpr 0 */ + lr %r2,%r0 /* set first parameter to void *arg */ ahi %r15,-96 /* make room on the stack for the save area */ + xc 0(4,%r15),0(%r15) basr %r14,%r1 /* jump to fn */ #ifdef PIC basr %r12,0 |