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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-22 22:49:03 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-28 23:43:40 -0500 |
| commit | cb56217362d87159b683175247d8d059df80aefa (patch) | |
| tree | 1d2889e6b854efb4ddea4b0861cdc14d7b4e8741 | |
| parent | eda96977024c84e677191cad785351abbb945901 (diff) | |
| download | op-kernel-dev-cb56217362d87159b683175247d8d059df80aefa.zip op-kernel-dev-cb56217362d87159b683175247d8d059df80aefa.tar.gz | |
unicore32: switch to generic clone(2)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/unicore32/include/uapi/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/unicore32/kernel/entry.S | 6 | ||||
| -rw-r--r-- | arch/unicore32/kernel/process.c | 11 | ||||
| -rw-r--r-- | arch/unicore32/kernel/sys.c | 14 |
4 files changed, 7 insertions, 25 deletions
diff --git a/arch/unicore32/include/uapi/asm/unistd.h b/arch/unicore32/include/uapi/asm/unistd.h index d18a3be8..00cf5e2 100644 --- a/arch/unicore32/include/uapi/asm/unistd.h +++ b/arch/unicore32/include/uapi/asm/unistd.h @@ -13,3 +13,4 @@ /* Use the standard ABI for syscalls. */ #include <asm-generic/unistd.h> #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_CLONE diff --git a/arch/unicore32/kernel/entry.S b/arch/unicore32/kernel/entry.S index 7049350..581630d 100644 --- a/arch/unicore32/kernel/entry.S +++ b/arch/unicore32/kernel/entry.S @@ -668,12 +668,6 @@ __cr_alignment: #endif .ltorg -ENTRY(sys_clone) - add ip, sp, #S_OFF - stw ip, [sp+], #4 - b __sys_clone -ENDPROC(sys_clone) - ENTRY(sys_rt_sigreturn) add r0, sp, #S_OFF mov why, #0 @ prevent syscall restart handling diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c index a8fe265..79e44e8 100644 --- a/arch/unicore32/kernel/process.c +++ b/arch/unicore32/kernel/process.c @@ -262,26 +262,27 @@ asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread"); int copy_thread(unsigned long clone_flags, unsigned long stack_start, - unsigned long stk_sz, struct task_struct *p, struct pt_regs *regs) + unsigned long stk_sz, struct task_struct *p, struct pt_regs *unused) { struct thread_info *thread = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save)); thread->cpu_context.sp = (unsigned long)childregs; - if (unlikely(!regs)) { + if (unlikely(p->flags & PF_KTHREAD)) { thread->cpu_context.pc = (unsigned long)ret_from_kernel_thread; thread->cpu_context.r4 = stack_start; thread->cpu_context.r5 = stk_sz; memset(childregs, 0, sizeof(struct pt_regs)); } else { thread->cpu_context.pc = (unsigned long)ret_from_fork; - *childregs = *regs; + *childregs = *current_pt_regs(); childregs->UCreg_00 = 0; - childregs->UCreg_sp = stack_start; + if (stack_start) + childregs->UCreg_sp = stack_start; if (clone_flags & CLONE_SETTLS) - childregs->UCreg_16 = regs->UCreg_03; + childregs->UCreg_16 = childregs->UCreg_03; } return 0; } diff --git a/arch/unicore32/kernel/sys.c b/arch/unicore32/kernel/sys.c index 9680134..cfe79c9 100644 --- a/arch/unicore32/kernel/sys.c +++ b/arch/unicore32/kernel/sys.c @@ -28,20 +28,6 @@ #include <asm/syscalls.h> #include <asm/cacheflush.h> -/* Clone a task - this clones the calling program thread. - * This is called indirectly via a small wrapper - */ -asmlinkage long __sys_clone(unsigned long clone_flags, unsigned long newsp, - void __user *parent_tid, void __user *child_tid, - struct pt_regs *regs) -{ - if (!newsp) - newsp = regs->UCreg_sp; - - return do_fork(clone_flags, newsp, regs, 0, - parent_tid, child_tid); -} - /* Note: used by the compat code even in 64-bit Linux. */ SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, |
