diff options
| -rw-r--r-- | arch/sh/include/asm/syscalls_32.h | 12 | ||||
| -rw-r--r-- | arch/sh/kernel/entry-common.S | 15 | ||||
| -rw-r--r-- | arch/sh/kernel/signal_32.c | 12 | ||||
| -rw-r--r-- | arch/sh/kernel/sys_sh32.c | 7 |
4 files changed, 20 insertions, 26 deletions
diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h index 4f97df8..4f643aa 100644 --- a/arch/sh/include/asm/syscalls_32.h +++ b/arch/sh/include/asm/syscalls_32.h @@ -9,15 +9,9 @@ struct pt_regs; -asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); -asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); -asmlinkage int sys_sh_pipe(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); +asmlinkage int sys_sigreturn(void); +asmlinkage int sys_rt_sigreturn(void); +asmlinkage int sys_sh_pipe(void); asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf, size_t count, long dummy, loff_t pos); asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf, diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index ca46834..13047a4 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -193,10 +193,10 @@ syscall_trace_entry: ! Reload R0-R4 from kernel stack, where the ! parent may have modified them using ! ptrace(POKEUSR). (Note that R0-R2 are - ! used by the system call handler directly - ! from the kernel stack anyway, so don't need - ! to be reloaded here.) This allows the parent - ! to rewrite system calls and args on the fly. + ! reloaded from the kernel stack by syscall_call + ! below, so don't need to be reloaded here.) + ! This allows the parent to rewrite system calls + ! and args on the fly. mov.l @(OFF_R4,r15), r4 ! arg0 mov.l @(OFF_R5,r15), r5 mov.l @(OFF_R6,r15), r6 @@ -357,8 +357,15 @@ syscall_call: mov.l 3f, r8 ! Load the address of sys_call_table add r8, r3 mov.l @r3, r8 + mov.l @(OFF_R2,r15), r2 + mov.l @(OFF_R1,r15), r1 + mov.l @(OFF_R0,r15), r0 + mov.l r2, @-r15 + mov.l r1, @-r15 + mov.l r0, @-r15 jsr @r8 ! jump to specific syscall handler nop + add #12, r15 mov.l @(OFF_R0,r15), r12 ! save r0 mov.l r0, @(OFF_R0,r15) ! save the return value ! diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 6af6e7c..594cd37 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -148,11 +148,9 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p return err; } -asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs) +asmlinkage int sys_sigreturn(void) { - struct pt_regs *regs = RELOC_HIDE(&__regs, 0); + struct pt_regs *regs = current_pt_regs(); struct sigframe __user *frame = (struct sigframe __user *)regs->regs[15]; sigset_t set; int r0; @@ -180,11 +178,9 @@ badframe: return 0; } -asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs) +asmlinkage int sys_rt_sigreturn(void) { - struct pt_regs *regs = RELOC_HIDE(&__regs, 0); + struct pt_regs *regs = current_pt_regs(); struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->regs[15]; sigset_t set; int r0; diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c index 497bab3..b66d1c6 100644 --- a/arch/sh/kernel/sys_sh32.c +++ b/arch/sh/kernel/sys_sh32.c @@ -21,17 +21,14 @@ * sys_pipe() is the normal C calling standard for creating * a pipe. It's not the way Unix traditionally does this, though. */ -asmlinkage int sys_sh_pipe(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs) +asmlinkage int sys_sh_pipe(void) { - struct pt_regs *regs = RELOC_HIDE(&__regs, 0); int fd[2]; int error; error = do_pipe_flags(fd, 0); if (!error) { - regs->regs[1] = fd[1]; + current_pt_regs()->regs[1] = fd[1]; return fd[0]; } return error; |
