* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#include <linux/config.h>
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/errno.h>
}
static int proc_alignment_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+ unsigned long count, void *data)
{
char mode;
if (get_user(mode, buffer))
return -EFAULT;
if (mode >= '0' && mode <= '5')
- ai_usermode = mode - '0';
+ ai_usermode = mode - '0';
}
return count;
}
goto fault; \
} while (0)
-#define put32_unaligned_check(val,addr) \
+#define put32_unaligned_check(val,addr) \
__put32_unaligned_check("strb", val, addr)
#define put32t_unaligned_check(val,addr) \
return TYPE_LDST;
user:
- if (LDST_L_BIT(instr)) {
- unsigned long val;
- get16t_unaligned_check(val, addr);
+ if (LDST_L_BIT(instr)) {
+ unsigned long val;
+ get16t_unaligned_check(val, addr);
- /* signed half-word? */
- if (instr & 0x40)
- val = (signed long)((signed short) val);
+ /* signed half-word? */
+ if (instr & 0x40)
+ val = (signed long)((signed short) val);
- regs->uregs[rd] = val;
- } else
- put16t_unaligned_check(regs->uregs[rd], addr);
+ regs->uregs[rd] = val;
+ } else
+ put16t_unaligned_check(regs->uregs[rd], addr);
- return TYPE_LDST;
+ return TYPE_LDST;
fault:
return TYPE_FAULT;
{
unsigned int rd = RD_BITS(instr);
+ if (((rd & 1) == 1) || (rd == 14))
+ goto bad;
+
ai_dword += 1;
if (user_mode(regs))
unsigned long val;
get32_unaligned_check(val, addr);
regs->uregs[rd] = val;
- get32_unaligned_check(val, addr+4);
- regs->uregs[rd+1] = val;
+ get32_unaligned_check(val, addr + 4);
+ regs->uregs[rd + 1] = val;
} else {
put32_unaligned_check(regs->uregs[rd], addr);
- put32_unaligned_check(regs->uregs[rd+1], addr+4);
+ put32_unaligned_check(regs->uregs[rd + 1], addr + 4);
}
return TYPE_LDST;
unsigned long val;
get32t_unaligned_check(val, addr);
regs->uregs[rd] = val;
- get32t_unaligned_check(val, addr+4);
- regs->uregs[rd+1] = val;
+ get32t_unaligned_check(val, addr + 4);
+ regs->uregs[rd + 1] = val;
} else {
put32t_unaligned_check(regs->uregs[rd], addr);
- put32t_unaligned_check(regs->uregs[rd+1], addr+4);
+ put32t_unaligned_check(regs->uregs[rd + 1], addr + 4);
}
return TYPE_LDST;
-
+ bad:
+ return TYPE_ERROR;
fault:
return TYPE_FAULT;
}
if (LDST_P_EQ_U(instr)) /* U = P */
eaddr += 4;
- /*
+ /*
* For alignment faults on the ARM922T/ARM920T the MMU makes
* the FSR (and hence addr) equal to the updated base address
* of the multiple access rather than the restored value.
/* 6.5.1 Format 3: */
case 0x4800 >> 11: /* 7.1.28 LDR(3) */
/* NOTE: This case is not technically possible. We're
- * loading 32-bit memory data via PC relative
+ * loading 32-bit memory data via PC relative
* addressing mode. So we can and should eliminate
* this case. But I'll leave it here for now.
*/
if (fault) {
type = TYPE_FAULT;
- goto bad_or_fault;
+ goto bad_or_fault;
}
if (user_mode(regs))
else if ((instr & 0x001000f0) == 0x000000d0 || /* LDRD */
(instr & 0x001000f0) == 0x000000f0) /* STRD */
handler = do_alignment_ldrdstrd;
+ else if ((instr & 0x01f00ff0) == 0x01000090) /* SWP */
+ goto swp;
else
goto bad;
break;
/*
* We got a fault - fix it up, or die.
*/
- do_bad_area(current, current->mm, addr, fsr, regs);
+ do_bad_area(addr, fsr, regs);
return 0;
+ swp:
+ printk(KERN_ERR "Alignment trap: not handling swp instruction\n");
+
bad:
/*
* Oops, we didn't handle the instruction.