Remove C and asm support code for old clone_with_pids interface and update comments accordingly.
Signed-off-by: Nathan Lynch <[email protected]> --- clone_ppc.c | 37 +-------------------------- clone_ppc_.S | 79 +--------------------------------------------------------- 2 files changed, 2 insertions(+), 114 deletions(-) diff --git a/clone_ppc.c b/clone_ppc.c index c9eee8b..47b8290 100644 --- a/clone_ppc.c +++ b/clone_ppc.c @@ -16,46 +16,11 @@ #include <sys/syscall.h> #include <asm/unistd.h> -struct target_pid_set; - -extern int __clone_with_pids(int (*fn)(void *arg), - void *child_stack , - int flags, - void *arg, - void *parent_tid, - void *tls, - void *child_tid, - struct target_pid_set *setp); - /* - * libc doesn't support clone_with_pid() yet... + * libc doesn't support eclone() yet... * below is arch-dependent code to use the syscall */ #include <linux/checkpoint.h> -#if defined(__NR_clone_with_pids) - -/* (see: http://lkml.indiana.edu/hypermail/linux/kernel/9604.3/0204.html) */ - -int clone_with_pids(int (*fn)(void *), void *child_stack, int flags, - struct target_pid_set *target_pids, void *arg) -{ - void *parent_tid = NULL; - void *tls = NULL; - void *child_tid = NULL; - pid_t newpid; - - newpid = __clone_with_pids(fn, child_stack, flags, arg, parent_tid, - tls, child_tid, target_pids); - - if (newpid < 0) { - errno = -newpid; - return -1; - } - - return newpid; -} - -#endif #include "eclone.h" diff --git a/clone_ppc_.S b/clone_ppc_.S index fa89c31..b736e13 100644 --- a/clone_ppc_.S +++ b/clone_ppc_.S @@ -1,5 +1,5 @@ /* - * clone_ppc_.S: support for clone_with_pid() on powerpc (32 bit) + * clone_ppc_.S: ppc32 support for eclone() * * Author: Nathan Lynch <[email protected]> * @@ -11,83 +11,6 @@ #include <asm/unistd.h> #include "powerpc_asm.h" -/* int [r3] clone_with_pids(int (*fn)(void *arg) [r3], - * void *child_stack [r4], - * int flags [r5], - * void *arg [r6], - * void *parent_tid [r7], - * void *tls [r8], - * void *child_tid [r9], - * struct target_pid_set *setp [r10]); - * Creates a child task with the pids specified by setp. - * Returns to parent only, child execution and exit is handled here. - * On error, returns negated errno. On success, returns the pid of the child - * created. - */ - -.text -.globl __clone_with_pids -__clone_with_pids: - -/* No argument validation. */ - -/* Set up parent's stack frame. */ -stwu r1,-32(r1) - - /* Save non-volatiles (r28-r31) which we plan to use. */ - stmw r28,16(r1) - - /* Set up child's stack frame. */ - clrrwi r4,r4,4 - li r0,0 - stw r0,-16(r4) - - /* Save fn, stack pointer, flags, and arg across system call. */ - mr r28,r3 - mr r29,r4 - mr r30,r5 - mr r31,r6 - - /* Set up arguments for system call. Stack pointer is already in r4. */ - mr r3,r5 /* flags */ - mr r5,r7 /* parent_tid */ - mr r6,r8 /* tls */ - mr r7,r9 /* child_tid */ - mr r8,r10 /* setp */ - - /* Do the system call */ - li r0,__NR_clone_with_pids - sc - - /* Parent or child? */ - cmpwi cr1,r3,0 - crandc 4*cr1+eq,4*cr1+eq,4*cr0+so - bne cr1,parent - - /* Child. Call fn. */ - mtctr r28 - mr r3,r31 - bctrl - - /* Assume result of fn in r3 and exit. */ - li r0,__NR_exit - sc - -parent: - /* Restore non-volatiles. */ - lmw r28,16(r1) - - addi r1,r1,32 - - /* Return to caller on success. */ - bnslr - - /* Handle error. Negate the return value to signal an error - * to the caller, which must set errno. - */ - neg r3,r3 - blr - #ifndef __NR_eclone #define __NR_eclone 323 #endif -- 1.6.2.5 _______________________________________________ Containers mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
