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powerpc/syscalls: signal_{32, 64} - switch to SYSCALL_DEFINE 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[mpe: Fix sys_debug_setcontext() prototype to return long]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Al Viro 2018-05-02 23:20:47 +10:00 committed by Michael Ellerman
parent 3691d61455
commit f3675644e1
4 changed files with 35 additions and 40 deletions
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14
arch/powerpc/include/asm/asm-prototypes.h
View File

@ -80,18 +80,12 @@ void machine_check_exception(struct pt_regs *regs);
void emulation_assist_interrupt(struct pt_regs *regs);
/* signals, syscalls and interrupts */
#ifdef CONFIG_PPC64
int sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
long ctx_size, long r6, long r7, long r8, struct pt_regs *regs);
#else
long sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
int ctx_size, int r6, int r7, int r8, struct pt_regs *regs);
int sys_debug_setcontext(struct ucontext __user *ctx,
int ndbg, struct sig_dbg_op __user *dbg,
int r6, int r7, int r8,
struct pt_regs *regs);
long ctx_size);
#ifdef CONFIG_PPC32
long sys_debug_setcontext(struct ucontext __user *ctx,
int ndbg, struct sig_dbg_op __user *dbg);
int
ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval __user *tvp);
unsigned long __init early_init(unsigned long dt_ptr);

6
arch/powerpc/kernel/signal.h
View File

@ -49,10 +49,8 @@ extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
#else /* CONFIG_PPC64 */
extern long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
struct pt_regs *regs);
extern long sys_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
struct pt_regs *regs);
extern long sys_rt_sigreturn(void);
extern long sys_sigreturn(void);
static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
struct task_struct *tsk)

40
arch/powerpc/kernel/signal_32.c
View File

@ -26,8 +26,8 @@
#include <linux/elf.h>
#include <linux/ptrace.h>
#include <linux/ratelimit.h>
#ifdef CONFIG_PPC64
#include <linux/syscalls.h>
#ifdef CONFIG_PPC64
#include <linux/compat.h>
#else
#include <linux/wait.h>
@ -57,10 +57,6 @@
#ifdef CONFIG_PPC64
#define sys_rt_sigreturn compat_sys_rt_sigreturn
#define sys_swapcontext compat_sys_swapcontext
#define sys_sigreturn compat_sys_sigreturn
#define old_sigaction old_sigaction32
#define sigcontext sigcontext32
#define mcontext mcontext32
@ -1041,10 +1037,15 @@ static int do_setcontext_tm(struct ucontext __user *ucp,
}
#endif
long sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
#ifdef CONFIG_PPC64
COMPAT_SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
struct ucontext __user *, new_ctx, int, ctx_size)
#else
SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
struct ucontext __user *, new_ctx, long, ctx_size)
#endif
{
struct pt_regs *regs = current_pt_regs();
unsigned char tmp __maybe_unused;
int ctx_has_vsx_region = 0;
@ -1132,10 +1133,14 @@ long sys_swapcontext(struct ucontext __user *old_ctx,
return 0;
}
long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
struct pt_regs *regs)
#ifdef CONFIG_PPC64
COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
#else
SYSCALL_DEFINE0(rt_sigreturn)
#endif
{
struct rt_sigframe __user *rt_sf;
struct pt_regs *regs = current_pt_regs();
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
struct ucontext __user *uc_transact;
unsigned long msr_hi;
@ -1224,11 +1229,10 @@ long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
}
#ifdef CONFIG_PPC32
int sys_debug_setcontext(struct ucontext __user *ctx,
int ndbg, struct sig_dbg_op __user *dbg,
int r6, int r7, int r8,
struct pt_regs *regs)
SYSCALL_DEFINE3(debug_setcontext, struct ucontext __user *, ctx,
int, ndbg, struct sig_dbg_op __user *, dbg)
{
struct pt_regs *regs = current_pt_regs();
struct sig_dbg_op op;
int i;
unsigned char tmp __maybe_unused;
@ -1419,9 +1423,13 @@ badframe:
/*
* Do a signal return; undo the signal stack.
*/
long sys_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
struct pt_regs *regs)
#ifdef CONFIG_PPC64
COMPAT_SYSCALL_DEFINE0(sigreturn)
#else
SYSCALL_DEFINE0(sigreturn)
#endif
{
struct pt_regs *regs = current_pt_regs();
struct sigframe __user *sf;
struct sigcontext __user *sc;
struct sigcontext sigctx;

15
arch/powerpc/kernel/signal_64.c
View File

@ -24,6 +24,7 @@
#include <linux/elf.h>
#include <linux/ptrace.h>
#include <linux/ratelimit.h>
#include <linux/syscalls.h>
#include <asm/sigcontext.h>
#include <asm/ucontext.h>
@ -624,17 +625,14 @@ static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp)
/*
* Handle {get,set,swap}_context operations
*/
int sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
long ctx_size, long r6, long r7, long r8, struct pt_regs *regs)
SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
struct ucontext __user *, new_ctx, long, ctx_size)
{
unsigned char tmp;
sigset_t set;
unsigned long new_msr = 0;
int ctx_has_vsx_region = 0;
BUG_ON(regs != current->thread.regs);
if (new_ctx &&
get_user(new_msr, &new_ctx->uc_mcontext.gp_regs[PT_MSR]))
return -EFAULT;
@ -698,18 +696,15 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
* Do a signal return; undo the signal stack.
*/
int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7, unsigned long r8,
struct pt_regs *regs)
SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = current_pt_regs();
struct ucontext __user *uc = (struct ucontext __user *)regs->gpr[1];
sigset_t set;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
unsigned long msr;
#endif
BUG_ON(current->thread.regs != regs);
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;