x86_64: move ia32

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 617 deletions

diff --git a/arch/x86_64/ia32/ia32_signal.c b/arch/x86_64/ia32/ia32_signal.c
deleted file mode 100644
index 6ea19c25f90..00000000000
--- a/arch/x86_64/ia32/ia32_signal.c
+++ /dev/null
@@ -1,617 +0,0 @@
-/*
- *  linux/arch/x86_64/ia32/ia32_signal.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *
- *  1997-11-28  Modified for POSIX.1b signals by Richard Henderson
- *  2000-06-20  Pentium III FXSR, SSE support by Gareth Hughes
- *  2000-12-*   x86-64 compatibility mode signal handling by Andi Kleen
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/personality.h>
-#include <linux/compat.h>
-#include <linux/binfmts.h>
-#include <asm/ucontext.h>
-#include <asm/uaccess.h>
-#include <asm/i387.h>
-#include <asm/ia32.h>
-#include <asm/ptrace.h>
-#include <asm/ia32_unistd.h>
-#include <asm/user32.h>
-#include <asm/sigcontext32.h>
-#include <asm/fpu32.h>
-#include <asm/proto.h>
-#include <asm/vsyscall32.h>
-
-#define DEBUG_SIG 0
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
-
-int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
-{
-	int err;
-	if (!access_ok (VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
-		return -EFAULT;
-
-	/* If you change siginfo_t structure, please make sure that
-	   this code is fixed accordingly.
-	   It should never copy any pad contained in the structure
-	   to avoid security leaks, but must copy the generic
-	   3 ints plus the relevant union member.  */
-	err = __put_user(from->si_signo, &to->si_signo);
-	err |= __put_user(from->si_errno, &to->si_errno);
- 	err |= __put_user((short)from->si_code, &to->si_code);
-
-	if (from->si_code < 0) {
-		err |= __put_user(from->si_pid, &to->si_pid);
- 		err |= __put_user(from->si_uid, &to->si_uid);
- 		err |= __put_user(ptr_to_compat(from->si_ptr), &to->si_ptr);
-	} else {
- 		/* First 32bits of unions are always present:
- 		 * si_pid === si_band === si_tid === si_addr(LS half) */
-		err |= __put_user(from->_sifields._pad[0], &to->_sifields._pad[0]);
-		switch (from->si_code >> 16) {
-		case __SI_FAULT >> 16:
-			break;
-		case __SI_CHLD >> 16:
-			err |= __put_user(from->si_utime, &to->si_utime);
-			err |= __put_user(from->si_stime, &to->si_stime);
-			err |= __put_user(from->si_status, &to->si_status);
-			/* FALL THROUGH */
-		default:
-		case __SI_KILL >> 16:
-			err |= __put_user(from->si_uid, &to->si_uid);
-			break;
-		case __SI_POLL >> 16:
-			err |= __put_user(from->si_fd, &to->si_fd); 
-			break;
-		case __SI_TIMER >> 16:
-			err |= __put_user(from->si_overrun, &to->si_overrun); 
-			err |= __put_user(ptr_to_compat(from->si_ptr),
-					&to->si_ptr);
-			break;
-		case __SI_RT >> 16: /* This is not generated by the kernel as of now.  */
-		case __SI_MESGQ >> 16:
-			err |= __put_user(from->si_uid, &to->si_uid);
-			err |= __put_user(from->si_int, &to->si_int);
-			break;
-		}
-	}
-	return err;
-}
-
-int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
-{
-	int err;
-	u32 ptr32;
-	if (!access_ok (VERIFY_READ, from, sizeof(compat_siginfo_t)))
-		return -EFAULT;
-
-	err = __get_user(to->si_signo, &from->si_signo);
-	err |= __get_user(to->si_errno, &from->si_errno);
-	err |= __get_user(to->si_code, &from->si_code);
-
-	err |= __get_user(to->si_pid, &from->si_pid);
-	err |= __get_user(to->si_uid, &from->si_uid);
-	err |= __get_user(ptr32, &from->si_ptr);
-	to->si_ptr = compat_ptr(ptr32);
-
-	return err;
-}
-
-asmlinkage long
-sys32_sigsuspend(int history0, int history1, old_sigset_t mask)
-{
-	mask &= _BLOCKABLE;
-	spin_lock_irq(&current->sighand->siglock);
-	current->saved_sigmask = current->blocked;
-	siginitset(&current->blocked, mask);
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	current->state = TASK_INTERRUPTIBLE;
-	schedule();
-	set_thread_flag(TIF_RESTORE_SIGMASK);
-	return -ERESTARTNOHAND;
-}
-
-asmlinkage long
-sys32_sigaltstack(const stack_ia32_t __user *uss_ptr,
-		  stack_ia32_t __user *uoss_ptr, 
-		  struct pt_regs *regs)
-{
-	stack_t uss,uoss; 
-	int ret;
-	mm_segment_t seg; 
-	if (uss_ptr) { 
-		u32 ptr;
-		memset(&uss,0,sizeof(stack_t));
-		if (!access_ok(VERIFY_READ,uss_ptr,sizeof(stack_ia32_t)) ||
-			    __get_user(ptr, &uss_ptr->ss_sp) ||
-			    __get_user(uss.ss_flags, &uss_ptr->ss_flags) ||
-			    __get_user(uss.ss_size, &uss_ptr->ss_size))
-			return -EFAULT;
-		uss.ss_sp = compat_ptr(ptr);
-	}
-	seg = get_fs(); 
-	set_fs(KERNEL_DS); 
-	ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->rsp);
-	set_fs(seg); 
-	if (ret >= 0 && uoss_ptr)  {
-		if (!access_ok(VERIFY_WRITE,uoss_ptr,sizeof(stack_ia32_t)) ||
-		    __put_user(ptr_to_compat(uoss.ss_sp), &uoss_ptr->ss_sp) ||
-		    __put_user(uoss.ss_flags, &uoss_ptr->ss_flags) ||
-		    __put_user(uoss.ss_size, &uoss_ptr->ss_size))
-			ret = -EFAULT;
-	} 	
-	return ret;	
-}
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-struct sigframe
-{
-	u32 pretcode;
-	int sig;
-	struct sigcontext_ia32 sc;
-	struct _fpstate_ia32 fpstate;
-	unsigned int extramask[_COMPAT_NSIG_WORDS-1];
-	char retcode[8];
-};
-
-struct rt_sigframe
-{
-	u32 pretcode;
-	int sig;
-	u32 pinfo;
-	u32 puc;
-	compat_siginfo_t info;
-	struct ucontext_ia32 uc;
-	struct _fpstate_ia32 fpstate;
-	char retcode[8];
-};
-
-static int
-ia32_restore_sigcontext(struct pt_regs *regs, struct sigcontext_ia32 __user *sc, unsigned int *peax)
-{
-	unsigned int err = 0;
-	
-	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-#if DEBUG_SIG
-	printk("SIG restore_sigcontext: sc=%p err(%x) eip(%x) cs(%x) flg(%x)\n",
-		sc, sc->err, sc->eip, sc->cs, sc->eflags);
-#endif
-#define COPY(x)		{ \
-	unsigned int reg;			\
-	err |= __get_user(reg, &sc->e ##x);	\
-	regs->r ## x = reg;			\
-}
-
-#define RELOAD_SEG(seg,mask)						\
-	{ unsigned int cur; 						\
-	  unsigned short pre;						\
-	  err |= __get_user(pre, &sc->seg);				\
-    	  asm volatile("movl %%" #seg ",%0" : "=r" (cur));		\
-	  pre |= mask; 							\
-	  if (pre != cur) loadsegment(seg,pre); }
-
-	/* Reload fs and gs if they have changed in the signal handler.
-	   This does not handle long fs/gs base changes in the handler, but 
-	   does not clobber them at least in the normal case. */ 
-	
-	{
-		unsigned gs, oldgs; 
-		err |= __get_user(gs, &sc->gs);
-		gs |= 3; 
-		asm("movl %%gs,%0" : "=r" (oldgs));
-		if (gs != oldgs)
-		load_gs_index(gs); 
-	} 
-	RELOAD_SEG(fs,3);
-	RELOAD_SEG(ds,3);
-	RELOAD_SEG(es,3);
-
-	COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
-	COPY(dx); COPY(cx); COPY(ip);
-	/* Don't touch extended registers */ 
-	
-	err |= __get_user(regs->cs, &sc->cs); 
-	regs->cs |= 3;  
-	err |= __get_user(regs->ss, &sc->ss); 
-	regs->ss |= 3; 
-
-	{
-		unsigned int tmpflags;
-		err |= __get_user(tmpflags, &sc->eflags);
-		regs->eflags = (regs->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
-		regs->orig_rax = -1;		/* disable syscall checks */
-	}
-
-	{
-		u32 tmp;
-		struct _fpstate_ia32 __user * buf;
-		err |= __get_user(tmp, &sc->fpstate);
-		buf = compat_ptr(tmp);
-		if (buf) {
-			if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
-				goto badframe;
-			err |= restore_i387_ia32(current, buf, 0);
-		} else {
-			struct task_struct *me = current;
-			if (used_math()) {
-				clear_fpu(me);
-				clear_used_math();
-			}
-		}
-	}
-
-	{ 
-		u32 tmp;
-		err |= __get_user(tmp, &sc->eax);
-		*peax = tmp;
-	}
-	return err;
-
-badframe:
-	return 1;
-}
-
-asmlinkage long sys32_sigreturn(struct pt_regs *regs)
-{
-	struct sigframe __user *frame = (struct sigframe __user *)(regs->rsp-8);
-	sigset_t set;
-	unsigned int eax;
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-	if (__get_user(set.sig[0], &frame->sc.oldmask)
-	    || (_COMPAT_NSIG_WORDS > 1
-		&& __copy_from_user((((char *) &set.sig) + 4), &frame->extramask,
-				    sizeof(frame->extramask))))
-		goto badframe;
-
-	sigdelsetmask(&set, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked = set;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-	
-	if (ia32_restore_sigcontext(regs, &frame->sc, &eax))
-		goto badframe;
-	return eax;
-
-badframe:
-	signal_fault(regs, frame, "32bit sigreturn");
-	return 0;
-}	
-
-asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
-{
-	struct rt_sigframe __user *frame;
-	sigset_t set;
-	unsigned int eax;
-	struct pt_regs tregs;
-
-	frame = (struct rt_sigframe __user *)(regs->rsp - 4);
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-		goto badframe;
-
-	sigdelsetmask(&set, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked = set;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-	
-	if (ia32_restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax))
-		goto badframe;
-
-	tregs = *regs;
-	if (sys32_sigaltstack(&frame->uc.uc_stack, NULL, &tregs) == -EFAULT)
-		goto badframe;
-
-	return eax;
-
-badframe:
-	signal_fault(regs,frame,"32bit rt sigreturn");
-	return 0;
-}	
-
-/*
- * Set up a signal frame.
- */
-
-static int
-ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc, struct _fpstate_ia32 __user *fpstate,
-		 struct pt_regs *regs, unsigned int mask)
-{
-	int tmp, err = 0;
-
-	tmp = 0;
-	__asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp));
-	err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
-	__asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp));
-	err |= __put_user(tmp, (unsigned int __user *)&sc->fs);
-	__asm__("movl %%ds,%0" : "=r"(tmp): "0"(tmp));
-	err |= __put_user(tmp, (unsigned int __user *)&sc->ds);
-	__asm__("movl %%es,%0" : "=r"(tmp): "0"(tmp));
-	err |= __put_user(tmp, (unsigned int __user *)&sc->es);
-
-	err |= __put_user((u32)regs->rdi, &sc->edi);
-	err |= __put_user((u32)regs->rsi, &sc->esi);
-	err |= __put_user((u32)regs->rbp, &sc->ebp);
-	err |= __put_user((u32)regs->rsp, &sc->esp);
-	err |= __put_user((u32)regs->rbx, &sc->ebx);
-	err |= __put_user((u32)regs->rdx, &sc->edx);
-	err |= __put_user((u32)regs->rcx, &sc->ecx);
-	err |= __put_user((u32)regs->rax, &sc->eax);
-	err |= __put_user((u32)regs->cs, &sc->cs);
-	err |= __put_user((u32)regs->ss, &sc->ss);
-	err |= __put_user(current->thread.trap_no, &sc->trapno);
-	err |= __put_user(current->thread.error_code, &sc->err);
-	err |= __put_user((u32)regs->rip, &sc->eip);
-	err |= __put_user((u32)regs->eflags, &sc->eflags);
-	err |= __put_user((u32)regs->rsp, &sc->esp_at_signal);
-
-	tmp = save_i387_ia32(current, fpstate, regs, 0);
-	if (tmp < 0)
-		err = -EFAULT;
-	else { 
-		clear_used_math();
-		stts();
-		err |= __put_user(ptr_to_compat(tmp ? fpstate : NULL),
-					&sc->fpstate);
-	}
-
-	/* non-iBCS2 extensions.. */
-	err |= __put_user(mask, &sc->oldmask);
-	err |= __put_user(current->thread.cr2, &sc->cr2);
-
-	return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
-{
-	unsigned long rsp;
-
-	/* Default to using normal stack */
-	rsp = regs->rsp;
-
-	/* This is the X/Open sanctioned signal stack switching.  */
-	if (ka->sa.sa_flags & SA_ONSTACK) {
-		if (sas_ss_flags(rsp) == 0)
-			rsp = current->sas_ss_sp + current->sas_ss_size;
-	}
-
-	/* This is the legacy signal stack switching. */
-	else if ((regs->ss & 0xffff) != __USER_DS &&
-		!(ka->sa.sa_flags & SA_RESTORER) &&
-		 ka->sa.sa_restorer) {
-		rsp = (unsigned long) ka->sa.sa_restorer;
-	}
-
-	rsp -= frame_size;
-	/* Align the stack pointer according to the i386 ABI,
-	 * i.e. so that on function entry ((sp + 4) & 15) == 0. */
-	rsp = ((rsp + 4) & -16ul) - 4;
-	return (void __user *) rsp;
-}
-
-int ia32_setup_frame(int sig, struct k_sigaction *ka,
-		     compat_sigset_t *set, struct pt_regs * regs)
-{
-	struct sigframe __user *frame;
-	int err = 0;
-
-	frame = get_sigframe(ka, regs, sizeof(*frame));
-
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		goto give_sigsegv;
-
-	err |= __put_user(sig, &frame->sig);
-	if (err)
-		goto give_sigsegv;
-
-	err |= ia32_setup_sigcontext(&frame->sc, &frame->fpstate, regs,
-					set->sig[0]);
-	if (err)
-		goto give_sigsegv;
-
-	if (_COMPAT_NSIG_WORDS > 1) {
-		err |= __copy_to_user(frame->extramask, &set->sig[1],
-				      sizeof(frame->extramask));
-	}
-	if (err)
-		goto give_sigsegv;
-
-	/* Return stub is in 32bit vsyscall page */
-	{ 
-		void __user *restorer;
-		if (current->binfmt->hasvdso)
-			restorer = VSYSCALL32_SIGRETURN;
-		else
-			restorer = (void *)&frame->retcode;
-		if (ka->sa.sa_flags & SA_RESTORER)
-			restorer = ka->sa.sa_restorer;       
-		err |= __put_user(ptr_to_compat(restorer), &frame->pretcode);
-	}
-	/* These are actually not used anymore, but left because some 
-	   gdb versions depend on them as a marker. */
-	{ 
-		/* copy_to_user optimizes that into a single 8 byte store */
-		static const struct { 
-			u16 poplmovl;
-			u32 val;
-			u16 int80;    
-			u16 pad; 
-		} __attribute__((packed)) code = { 
-			0xb858,		 /* popl %eax ; movl $...,%eax */
-			__NR_ia32_sigreturn,   
-			0x80cd,		/* int $0x80 */
-			0,
-		}; 
-		err |= __copy_to_user(frame->retcode, &code, 8); 
-	}
-	if (err)
-		goto give_sigsegv;
-
-	/* Set up registers for signal handler */
-	regs->rsp = (unsigned long) frame;
-	regs->rip = (unsigned long) ka->sa.sa_handler;
-
-	/* Make -mregparm=3 work */
-	regs->rax = sig;
-	regs->rdx = 0;
-	regs->rcx = 0;
-
-	asm volatile("movl %0,%%ds" :: "r" (__USER32_DS)); 
-	asm volatile("movl %0,%%es" :: "r" (__USER32_DS)); 
-
-	regs->cs = __USER32_CS; 
-	regs->ss = __USER32_DS; 
-
-	set_fs(USER_DS);
-	regs->eflags &= ~TF_MASK;
-	if (test_thread_flag(TIF_SINGLESTEP))
-		ptrace_notify(SIGTRAP);
-
-#if DEBUG_SIG
-	printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n",
-		current->comm, current->pid, frame, regs->rip, frame->pretcode);
-#endif
-
-	return 0;
-
-give_sigsegv:
-	force_sigsegv(sig, current);
-	return -EFAULT;
-}
-
-int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-			compat_sigset_t *set, struct pt_regs * regs)
-{
-	struct rt_sigframe __user *frame;
-	int err = 0;
-
-	frame = get_sigframe(ka, regs, sizeof(*frame));
-
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		goto give_sigsegv;
-
-	{
-		struct exec_domain *ed = current_thread_info()->exec_domain;
-		err |= __put_user((ed
-		    	   && ed->signal_invmap
-		    	   && sig < 32
-		    	   ? ed->signal_invmap[sig]
-			   : sig),
-			  &frame->sig);
-	}
-	err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo);
-	err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc);
-	err |= copy_siginfo_to_user32(&frame->info, info);
-	if (err)
-		goto give_sigsegv;
-
-	/* Create the ucontext.  */
-	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->rsp),
-			  &frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
-	err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
-			        regs, set->sig[0]);
-	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-	if (err)
-		goto give_sigsegv;
-
-	
-	{ 
-		void __user *restorer = VSYSCALL32_RTSIGRETURN; 
-		if (ka->sa.sa_flags & SA_RESTORER)
-			restorer = ka->sa.sa_restorer;       
-		err |= __put_user(ptr_to_compat(restorer), &frame->pretcode);
-	}
-
-	/* This is movl $,%eax ; int $0x80 */
-	/* Not actually used anymore, but left because some gdb versions
-	   need it. */ 
-	{ 
-		/* __copy_to_user optimizes that into a single 8 byte store */
-		static const struct { 
-			u8 movl; 
-			u32 val; 
-			u16 int80; 
-			u16 pad;
-			u8  pad2;				
-		} __attribute__((packed)) code = { 
-			0xb8,
-			__NR_ia32_rt_sigreturn,
-			0x80cd,
-			0,
-		}; 
-		err |= __copy_to_user(frame->retcode, &code, 8); 
-	} 
-	if (err)
-		goto give_sigsegv;
-
-	/* Set up registers for signal handler */
-	regs->rsp = (unsigned long) frame;
-	regs->rip = (unsigned long) ka->sa.sa_handler;
-
-	/* Make -mregparm=3 work */
-	regs->rax = sig;
-	regs->rdx = (unsigned long) &frame->info;
-	regs->rcx = (unsigned long) &frame->uc;
-
-	/* Make -mregparm=3 work */
-	regs->rax = sig;
-	regs->rdx = (unsigned long) &frame->info;
-	regs->rcx = (unsigned long) &frame->uc;
-
-	asm volatile("movl %0,%%ds" :: "r" (__USER32_DS)); 
-	asm volatile("movl %0,%%es" :: "r" (__USER32_DS)); 
-	
-	regs->cs = __USER32_CS; 
-	regs->ss = __USER32_DS; 
-
-	set_fs(USER_DS);
-	regs->eflags &= ~TF_MASK;
-	if (test_thread_flag(TIF_SINGLESTEP))
-		ptrace_notify(SIGTRAP);
-
-#if DEBUG_SIG
-	printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n",
-		current->comm, current->pid, frame, regs->rip, frame->pretcode);
-#endif
-
-	return 0;
-
-give_sigsegv:
-	force_sigsegv(sig, current);
-	return -EFAULT;
-}