diff options
| -rw-r--r-- | arch/c6x/include/asm/syscalls.h | 4 | ||||
| -rw-r--r-- | arch/c6x/include/uapi/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/c6x/kernel/entry.S | 12 | ||||
| -rw-r--r-- | arch/c6x/kernel/process.c | 25 |
4 files changed, 6 insertions, 36 deletions
diff --git a/arch/c6x/include/asm/syscalls.h b/arch/c6x/include/asm/syscalls.h index e7b8991dc07c..df3d05feb153 100644 --- a/arch/c6x/include/asm/syscalls.h +++ b/arch/c6x/include/asm/syscalls.h @@ -41,10 +41,6 @@ extern long sys_fallocate_c6x(int fd, int mode, u32 len_lo, u32 len_hi); extern int sys_cache_sync(unsigned long s, unsigned long e); -struct pt_regs; - -extern asmlinkage long sys_c6x_clone(struct pt_regs *regs); - #include <asm-generic/syscalls.h> #endif /* __ASM_C6X_SYSCALLS_H */ diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h index 625beafb9cd1..f3987a8703d9 100644 --- a/arch/c6x/include/uapi/asm/unistd.h +++ b/arch/c6x/include/uapi/asm/unistd.h @@ -15,6 +15,7 @@ */ #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_CLONE /* Use the standard ABI for syscalls. */ #include <asm-generic/unistd.h> diff --git a/arch/c6x/kernel/entry.S b/arch/c6x/kernel/entry.S index 75f6f36472cf..1037b98953ca 100644 --- a/arch/c6x/kernel/entry.S +++ b/arch/c6x/kernel/entry.S @@ -613,18 +613,6 @@ ENDPROC(sys_sigaltstack) ;; Special system calls ;; return address is in B3 ;; -ENTRY(sys_clone) - ADD .D1X SP,8,A4 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_c6x_clone,A0 - MVKH .S1 sys_c6x_clone,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_c6x_clone - NOP 5 -#endif -ENDPROC(sys_clone) - ENTRY(sys_rt_sigreturn) ADD .D1X SP,8,A4 #ifdef CONFIG_C6X_BIG_KERNEL diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c index 2770d9a9a84e..a3f91895e8b4 100644 --- a/arch/c6x/kernel/process.c +++ b/arch/c6x/kernel/process.c @@ -112,22 +112,6 @@ void exit_thread(void) { } -SYSCALL_DEFINE1(c6x_clone, struct pt_regs *, regs) -{ - unsigned long clone_flags; - unsigned long newsp; - - /* syscall puts clone_flags in A4 and usp in B4 */ - clone_flags = regs->orig_a4; - if (regs->b4) - newsp = regs->b4; - else - newsp = regs->sp; - - return do_fork(clone_flags, newsp, regs, 0, (int __user *)regs->a6, - (int __user *)regs->b6); -} - /* * Do necessary setup to start up a newly executed thread. */ @@ -155,13 +139,13 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp) */ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long ustk_size, - struct task_struct *p, struct pt_regs *regs) + struct task_struct *p, struct pt_regs *unused) { struct pt_regs *childregs; childregs = task_pt_regs(p); - if (!regs) { + if (unlikely(p->flags & PF_KTHREAD)) { /* case of __kernel_thread: we return to supervisor space */ memset(childregs, 0, sizeof(struct pt_regs)); childregs->sp = (unsigned long)(childregs + 1); @@ -170,8 +154,9 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, childregs->a1 = ustk_size; /* argument */ } else { /* Otherwise use the given stack */ - *childregs = *regs; - childregs->sp = usp; + *childregs = *current_pt_regs(); + if (usp) + childregs->sp = usp; p->thread.pc = (unsigned long) ret_from_fork; } |