X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc%2Fmm%2Ffault.c;h=9eeed3347df3297f4790ff8a7f39b73fa4a38f6e;hb=1e8a4455896009fde96b35c0ca102f1b82e9225a;hp=ea2a40a46ef68be2547e9b87694fc8a658e97d17;hpb=daddc0d38b3571bed170afa273a49a0eba090c1e;p=linux-2.6.git

diff --git a/arch/sparc/mm/fault.c b/arch/sparc/mm/fault.c
index ea2a40a46..9eeed3347 100644
--- a/arch/sparc/mm/fault.c
+++ b/arch/sparc/mm/fault.c
@@ -23,7 +23,6 @@
 #include <linux/module.h>
 
 #include <asm/system.h>
-#include <asm/segment.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/memreg.h>
@@ -34,8 +33,6 @@
 #include <asm/kdebug.h>
 #include <asm/uaccess.h>
 
-#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0]))
-
 extern int prom_node_root;
 
 /* At boot time we determine these two values necessary for setting
@@ -201,6 +198,25 @@ asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc,
 	return 0;
 }
 
+extern unsigned long safe_compute_effective_address(struct pt_regs *,
+						    unsigned int);
+
+static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault)
+{
+	unsigned int insn;
+
+	if (text_fault)
+		return regs->pc;
+
+	if (regs->psr & PSR_PS) {
+		insn = *(unsigned int *) regs->pc;
+	} else {
+		__get_user(insn, (unsigned int *) regs->pc);
+	}
+
+	return safe_compute_effective_address(regs, insn);
+}
+
 asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
 			       unsigned long address)
 {
@@ -275,16 +291,17 @@ good_area:
 	 * the fault.
 	 */
 	switch (handle_mm_fault(mm, vma, address, write)) {
-	case 1:
-		current->min_flt++;
-		break;
-	case 2:
+	case VM_FAULT_SIGBUS:
+		goto do_sigbus;
+	case VM_FAULT_OOM:
+		goto out_of_memory;
+	case VM_FAULT_MAJOR:
 		current->maj_flt++;
 		break;
-	case 0:
-		goto do_sigbus;
+	case VM_FAULT_MINOR:
 	default:
-		goto out_of_memory;
+		current->min_flt++;
+		break;
 	}
 	up_read(&mm->mmap_sem);
 	return;
@@ -307,7 +324,7 @@ bad_area_nosemaphore:
 		info.si_errno = 0;
 		/* info.si_code set above to make clear whether
 		   this was a SEGV_MAPERR or SEGV_ACCERR fault.  */
-		info.si_addr = (void *)address;
+		info.si_addr = (void __user *)compute_si_addr(regs, text_fault);
 		info.si_trapno = 0;
 		force_sig_info (SIGSEGV, &info, tsk);
 		return;
@@ -361,7 +378,7 @@ do_sigbus:
 	info.si_signo = SIGBUS;
 	info.si_errno = 0;
 	info.si_code = BUS_ADRERR;
-	info.si_addr = (void *)address;
+	info.si_addr = (void __user *) compute_si_addr(regs, text_fault);
 	info.si_trapno = 0;
 	force_sig_info (SIGBUS, &info, tsk);
 	if (!from_user)
@@ -412,10 +429,10 @@ asmlinkage void do_sun4c_fault(struct pt_regs *regs, int text_fault, int write,
 		address = regs->pc;
 	} else if (!write &&
 		   !(regs->psr & PSR_PS)) {
-		unsigned int insn, *ip;
+		unsigned int insn, __user *ip;
 
-		ip = (unsigned int *)regs->pc;
-		if (! get_user(insn, ip)) {
+		ip = (unsigned int __user *)regs->pc;
+		if (!get_user(insn, ip)) {
 			if ((insn & 0xc1680000) == 0xc0680000)
 				write = 1;
 		}
@@ -516,8 +533,11 @@ good_area:
 		if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
 			goto bad_area;
 	}
-	if (!handle_mm_fault(mm, vma, address, write))
+	switch (handle_mm_fault(mm, vma, address, write)) {
+	case VM_FAULT_SIGBUS:
+	case VM_FAULT_OOM:
 		goto do_sigbus;
+	}
 	up_read(&mm->mmap_sem);
 	return;
 bad_area:
@@ -530,7 +550,7 @@ bad_area:
 	info.si_errno = 0;
 	/* info.si_code set above to make clear whether
 	   this was a SEGV_MAPERR or SEGV_ACCERR fault.  */
-	info.si_addr = (void *)address;
+	info.si_addr = (void __user *) address;
 	info.si_trapno = 0;
 	force_sig_info (SIGSEGV, &info, tsk);
 	return;
@@ -540,7 +560,7 @@ do_sigbus:
 	info.si_signo = SIGBUS;
 	info.si_errno = 0;
 	info.si_code = BUS_ADRERR;
-	info.si_addr = (void *)address;
+	info.si_addr = (void __user *) address;
 	info.si_trapno = 0;
 	force_sig_info (SIGBUS, &info, tsk);
 }