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arch/tile: Use <asm-generic/syscalls.h>

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With this change we now include <asm-generic/syscalls.h> into the "tile"
version of the header.  To take full advantage of the prototypes there,
we also change our naming convention for "struct pt_regs *" syscalls so
that, e.g., _sys_execve() is the "true" syscall entry, which sets the
appropriate register to point to the pt_regs before calling sys_execve().

While doing this I realized I no longer needed the fork and vfork
entry point stubs, since those functions aren't in the generic
syscall ABI, so I removed them as well.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2010-10-14 14:34:33 -04:00
parent ce0ecc8abf
commit d929b6aeaa
9 changed files with 76 additions and 103 deletions
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31
arch/tile/kernel/process.c
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@@ -528,14 +528,9 @@ struct task_struct *__sched _switch_to(struct task_struct *prev,
return __switch_to(prev, next, next_current_ksp0(next));
}
long _sys_fork(struct pt_regs *regs)
{
return do_fork(SIGCHLD, regs->sp, regs, 0, NULL, NULL);
}
long _sys_clone(unsigned long clone_flags, unsigned long newsp,
void __user *parent_tidptr, void __user *child_tidptr,
struct pt_regs *regs)
SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
void __user *, parent_tidptr, void __user *, child_tidptr,
struct pt_regs *, regs)
{
if (!newsp)
newsp = regs->sp;
@@ -543,18 +538,13 @@ long _sys_clone(unsigned long clone_flags, unsigned long newsp,
parent_tidptr, child_tidptr);
}
long _sys_vfork(struct pt_regs *regs)
{
return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->sp,
regs, 0, NULL, NULL);
}
/*
* sys_execve() executes a new program.
*/
long _sys_execve(const char __user *path,
const char __user *const __user *argv,
const char __user *const __user *envp, struct pt_regs *regs)
SYSCALL_DEFINE4(execve, const char __user *, path,
const char __user *const __user *, argv,
const char __user *const __user *, envp,
struct pt_regs *, regs)
{
long error;
char *filename;
@@ -570,9 +560,10 @@ out:
}
#ifdef CONFIG_COMPAT
long _compat_sys_execve(const char __user *path,
const compat_uptr_t __user *argv,
const compat_uptr_t __user *envp, struct pt_regs *regs)
long compat_sys_execve(const char __user *path,
const compat_uptr_t __user *argv,
const compat_uptr_t __user *envp,
struct pt_regs *regs)
{
long error;
char *filename;