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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-27 00:07:24 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-11-28 22:46:54 -0500
commit3416e8098aa4c0eea1b2e5c4efc68cf61a848864 (patch)
treeafa086cb8cb285b677e6c990bff66af53076f7ce /arch/h8300
parente9eac30418dbbe51217a7c91906d349f9f4658e1 (diff)
downloadvexpress-lsk-3416e8098aa4c0eea1b2e5c4efc68cf61a848864.tar.gz
h8300: switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/h8300')
-rw-r--r--arch/h8300/include/asm/unistd.h3
-rw-r--r--arch/h8300/kernel/process.c38
-rw-r--r--arch/h8300/kernel/syscalls.S9
3 files changed, 6 insertions, 44 deletions
diff --git a/arch/h8300/include/asm/unistd.h b/arch/h8300/include/asm/unistd.h
index 07afcfaec99..c2c2f5c7d6b 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 2a45718cc5e..b0fb4054aee 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 9d77e715a2e..b74dd0ade58 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