diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h
index 2fd5926fb97d668ef65b25980fc944142f33e4ce..5d98d0b68ffc8e08e07cf829ed15103f6fc09796 100644
--- a/arch/x86/include/asm/linkage.h
+++ b/arch/x86/include/asm/linkage.h
@@ -17,13 +17,6 @@
*/
#define asmregparm __attribute__((regparm(3)))
-/*
- * For syscalls that need a pointer to the pt_regs struct (ie. fork).
- * The regs pointer is passed in %eax as the first argument. The
- * remaining function arguments remain on the stack.
- */
-#define ptregscall __attribute__((regparm(1)))
-
/*
* Make sure the compiler doesn't do anything stupid with the
* arguments on the stack - they are owned by the *caller*, not
diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h
index 617295255a17c5b9e794ab231fd16ce48049ca9e..77bb31a88ba8248b0084e8916d5a13ea2165f301 100644
--- a/arch/x86/include/asm/syscalls.h
+++ b/arch/x86/include/asm/syscalls.h
@@ -29,26 +29,21 @@ asmlinkage int sys_get_thread_area(struct user_desc __user *);
/* X86_32 only */
#ifdef CONFIG_X86_32
/* kernel/process_32.c */
-ptregscall int sys_fork(struct pt_regs *);
-ptregscall int sys_clone(struct pt_regs *, unsigned long,
- unsigned long, int __user *,
- unsigned long, int __user *);
-ptregscall int sys_vfork(struct pt_regs *);
-ptregscall int sys_execve(struct pt_regs *, char __user *,
- char __user * __user *,
- char __user * __user *);
+int sys_fork(struct pt_regs *);
+int sys_clone(struct pt_regs *);
+int sys_vfork(struct pt_regs *);
+int sys_execve(struct pt_regs *);
/* kernel/signal_32.c */
asmlinkage int sys_sigsuspend(int, int, old_sigset_t);
asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
struct old_sigaction __user *);
-ptregscall int sys_sigaltstack(struct pt_regs *, const stack_t __user *,
- stack_t __user *);
-ptregscall unsigned long sys_sigreturn(struct pt_regs *);
-ptregscall int sys_rt_sigreturn(struct pt_regs *);
+int sys_sigaltstack(struct pt_regs *);
+unsigned long sys_sigreturn(struct pt_regs *);
+int sys_rt_sigreturn(struct pt_regs *);
/* kernel/ioport.c */
-ptregscall long sys_iopl(struct pt_regs *, unsigned int);
+long sys_iopl(struct pt_regs *);
/* kernel/sys_i386_32.c */
asmlinkage long sys_mmap2(unsigned long, unsigned long, unsigned long,
@@ -64,8 +59,8 @@ struct oldold_utsname;
asmlinkage int sys_olduname(struct oldold_utsname __user *);
/* kernel/vm86_32.c */
-ptregscall int sys_vm86old(struct pt_regs *, struct vm86_struct __user *);
-ptregscall int sys_vm86(struct pt_regs *, unsigned long, unsigned long);
+int sys_vm86old(struct pt_regs *);
+int sys_vm86(struct pt_regs *);
#else /* CONFIG_X86_32 */
diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
index 7ec148646312f2b13807043af2368e6d770f60d4..e41980a373ab9768e42cedcd11bf7e6a60dcb1df 100644
--- a/arch/x86/kernel/ioport.c
+++ b/arch/x86/kernel/ioport.c
@@ -131,8 +131,9 @@ static int do_iopl(unsigned int level, struct pt_regs *regs)
}
#ifdef CONFIG_X86_32
-ptregscall long sys_iopl(struct pt_regs *regs, unsigned int level)
+long sys_iopl(struct pt_regs *regs)
{
+ unsigned int level = regs->bx;
struct thread_struct *t = ¤t->thread;
int rc;
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 5a9dcfb01f7136722d39782804b29274b7f774e2..fec79ad85dc65cd280e324819c02bc6bd8d2b821 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -603,15 +603,21 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
return prev_p;
}
-ptregscall int sys_fork(struct pt_regs *regs)
+int sys_fork(struct pt_regs *regs)
{
return do_fork(SIGCHLD, regs->sp, regs, 0, NULL, NULL);
}
-ptregscall int sys_clone(struct pt_regs *regs, unsigned long clone_flags,
- unsigned long newsp, int __user *parent_tidptr,
- unsigned long unused, int __user *child_tidptr)
+int sys_clone(struct pt_regs *regs)
{
+ unsigned long clone_flags;
+ unsigned long newsp;
+ int __user *parent_tidptr, *child_tidptr;
+
+ clone_flags = regs->bx;
+ newsp = regs->cx;
+ parent_tidptr = (int __user *)regs->dx;
+ child_tidptr = (int __user *)regs->di;
if (!newsp)
newsp = regs->sp;
return do_fork(clone_flags, newsp, regs, 0, parent_tidptr, child_tidptr);
@@ -627,7 +633,7 @@ ptregscall int sys_clone(struct pt_regs *regs, unsigned long clone_flags,
* do not have enough call-clobbered registers to hold all
* the information you need.
*/
-ptregscall int sys_vfork(struct pt_regs *regs)
+int sys_vfork(struct pt_regs *regs)
{
return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->sp, regs, 0, NULL, NULL);
}
@@ -635,18 +641,19 @@ ptregscall int sys_vfork(struct pt_regs *regs)
/*
* sys_execve() executes a new program.
*/
-ptregscall int sys_execve(struct pt_regs *regs, char __user *u_filename,
- char __user * __user *argv,
- char __user * __user *envp)
+int sys_execve(struct pt_regs *regs)
{
int error;
char *filename;
- filename = getname(u_filename);
+ filename = getname((char __user *) regs->bx);
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
- error = do_execve(filename, argv, envp, regs);
+ error = do_execve(filename,
+ (char __user * __user *) regs->cx,
+ (char __user * __user *) regs->dx,
+ regs);
if (error == 0) {
/* Make sure we don't return using sysenter.. */
set_thread_flag(TIF_IRET);
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index d7a158367e3866dbce6dbff59414c8b7e3372ea6..ccfb27412f0f817636beaffe044bc4b8166a2ba9 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -549,23 +549,27 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
#endif /* CONFIG_X86_32 */
#ifdef CONFIG_X86_32
-ptregscall int
-sys_sigaltstack(struct pt_regs *regs, const stack_t __user *uss,
- stack_t __user *uoss)
+int sys_sigaltstack(struct pt_regs *regs)
+{
+ const stack_t __user *uss = (const stack_t __user *)regs->bx;
+ stack_t __user *uoss = (stack_t __user *)regs->cx;
+
+ return do_sigaltstack(uss, uoss, regs->sp);
+}
#else /* !CONFIG_X86_32 */
asmlinkage long
sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
struct pt_regs *regs)
-#endif /* CONFIG_X86_32 */
{
return do_sigaltstack(uss, uoss, regs->sp);
}
+#endif /* CONFIG_X86_32 */
/*
* Do a signal return; undo the signal stack.
*/
#ifdef CONFIG_X86_32
-ptregscall unsigned long sys_sigreturn(struct pt_regs *regs)
+unsigned long sys_sigreturn(struct pt_regs *regs)
{
struct sigframe __user *frame;
unsigned long ax;
@@ -629,13 +633,16 @@ static long do_rt_sigreturn(struct pt_regs *regs)
}
#ifdef CONFIG_X86_32
-ptregscall int sys_rt_sigreturn(struct pt_regs *regs)
+int sys_rt_sigreturn(struct pt_regs *regs)
+{
+ return do_rt_sigreturn(regs);
+}
#else /* !CONFIG_X86_32 */
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
-#endif /* CONFIG_X86_32 */
{
return do_rt_sigreturn(regs);
}
+#endif /* CONFIG_X86_32 */
/*
* OK, we're invoking a handler:
diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index 8fa6ba7c923326d10ce5fda2502164bc4b7eb3ea..d7ac84e7fc1c73f7cfcfd8ca6b66c5abed2219ce 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c
@@ -197,8 +197,9 @@ static void mark_screen_rdonly(struct mm_struct *mm)
static int do_vm86_irq_handling(int subfunction, int irqnumber);
static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk);
-ptregscall int sys_vm86old(struct pt_regs *regs, struct vm86_struct __user *v86)
+int sys_vm86old(struct pt_regs *regs)
{
+ struct vm86_struct __user *v86 = (struct vm86_struct __user *)regs->bx;
struct kernel_vm86_struct info; /* declare this _on top_,
* this avoids wasting of stack space.
* This remains on the stack until we
@@ -226,7 +227,7 @@ ptregscall int sys_vm86old(struct pt_regs *regs, struct vm86_struct __user *v86)
}
-ptregscall int sys_vm86(struct pt_regs *regs, unsigned long cmd, unsigned long arg)
+int sys_vm86(struct pt_regs *regs)
{
struct kernel_vm86_struct info; /* declare this _on top_,
* this avoids wasting of stack space.
@@ -238,12 +239,12 @@ ptregscall int sys_vm86(struct pt_regs *regs, unsigned long cmd, unsigned long a
struct vm86plus_struct __user *v86;
tsk = current;
- switch (cmd) {
+ switch (regs->bx) {
case VM86_REQUEST_IRQ:
case VM86_FREE_IRQ:
case VM86_GET_IRQ_BITS:
case VM86_GET_AND_RESET_IRQ:
- ret = do_vm86_irq_handling(cmd, (int)arg);
+ ret = do_vm86_irq_handling(regs->bx, (int)regs->cx);
goto out;
case VM86_PLUS_INSTALL_CHECK:
/*
@@ -260,7 +261,7 @@ ptregscall int sys_vm86(struct pt_regs *regs, unsigned long cmd, unsigned long a
ret = -EPERM;
if (tsk->thread.saved_sp0)
goto out;
- v86 = (struct vm86plus_struct __user *)arg;
+ v86 = (struct vm86plus_struct __user *)regs->cx;
tmp = copy_vm86_regs_from_user(&info.regs, &v86->regs,
offsetof(struct kernel_vm86_struct, regs32) -
sizeof(info.regs));