diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-27 00:07:24 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-28 22:46:54 -0500 |
| commit | 3416e8098aa4c0eea1b2e5c4efc68cf61a848864 (patch) | |
| tree | afa086cb8cb285b677e6c990bff66af53076f7ce /arch | |
| parent | e9eac30418dbbe51217a7c91906d349f9f4658e1 (diff) | |
| download | linux-3416e8098aa4c0eea1b2e5c4efc68cf61a848864.tar.bz2 | |
h8300: switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/h8300/include/asm/unistd.h | 3 | ||||
| -rw-r--r-- | arch/h8300/kernel/process.c | 38 | ||||
| -rw-r--r-- | arch/h8300/kernel/syscalls.S | 9 |
3 files changed, 6 insertions, 44 deletions
diff --git a/arch/h8300/include/asm/unistd.h b/arch/h8300/include/asm/unistd.h index 07afcfaec995..c2c2f5c7d6bf 100644 --- a/arch/h8300/include/asm/unistd.h +++ b/arch/h8300/include/asm/unistd.h @@ -357,6 +357,9 @@ #define __ARCH_WANT_SYS_RT_SIGACTION #define __ARCH_WANT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_FORK +#define __ARCH_WANT_SYS_VFORK +#define __ARCH_WANT_SYS_CLONE /* * "Conditional" syscalls diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index 2a45718cc5e8..b0fb4054aee5 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -127,40 +127,9 @@ void flush_thread(void) { } -/* - * "h8300_fork()".. By the time we get here, the - * non-volatile registers have also been saved on the - * stack. We do some ugly pointer stuff here.. (see - * also copy_thread) - */ - -asmlinkage int h8300_fork(struct pt_regs *regs) -{ - return -EINVAL; -} - -asmlinkage int h8300_vfork(struct pt_regs *regs) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL); -} - -asmlinkage int h8300_clone(struct pt_regs *regs) -{ - unsigned long clone_flags; - unsigned long newsp; - - /* syscall2 puts clone_flags in er1 and usp in er2 */ - clone_flags = regs->er1; - newsp = regs->er2; - if (!newsp) - newsp = rdusp(); - return do_fork(clone_flags, newsp, regs, 0, NULL, NULL); - -} - int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long topstk, - struct task_struct * p, struct pt_regs * regs) + struct task_struct * p, struct pt_regs *unused) { struct pt_regs * childregs; @@ -173,11 +142,10 @@ int copy_thread(unsigned long clone_flags, childregs->er5 = usp; /* fn */ p->thread.ksp = (unsigned long)childregs; } - *childregs = *regs; + *childregs = *current_pt_regs(); childregs->retpc = (unsigned long) ret_from_fork; childregs->er0 = 0; - - p->thread.usp = usp; + p->thread.usp = usp ?: rdusp(); p->thread.ksp = (unsigned long)childregs; return 0; diff --git a/arch/h8300/kernel/syscalls.S b/arch/h8300/kernel/syscalls.S index 9d77e715a2ed..b74dd0ade58d 100644 --- a/arch/h8300/kernel/syscalls.S +++ b/arch/h8300/kernel/syscalls.S @@ -340,21 +340,12 @@ SYMBOL_NAME_LABEL(sys_call_table) bra SYMBOL_NAME(syscall_trampoline):8 .endm -SYMBOL_NAME_LABEL(sys_clone) - call_sp h8300_clone - SYMBOL_NAME_LABEL(sys_sigreturn) call_sp do_sigreturn SYMBOL_NAME_LABEL(sys_rt_sigreturn) call_sp do_rt_sigreturn -SYMBOL_NAME_LABEL(sys_fork) - call_sp h8300_fork - -SYMBOL_NAME_LABEL(sys_vfork) - call_sp h8300_vfork - SYMBOL_NAME_LABEL(syscall_trampoline) mov.l sp,er0 jmp @er6 |