sh: uncached mapping helpers.
This adds some helper routines for uncached mapping support. This
simplifies some of the cases where we need to check the uncached mapping
boundaries in addition to giving us a centralized location for building
more complex manipulation on top of.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
index e879dff..e11b14e 100644
--- a/arch/sh/include/asm/ptrace.h
+++ b/arch/sh/include/asm/ptrace.h
@@ -139,15 +139,8 @@
{
unsigned long pc = instruction_pointer(regs);
-#ifdef CONFIG_UNCACHED_MAPPING
- /*
- * If PC points in to the uncached mapping, fix it up and hand
- * back the cached equivalent.
- */
- if ((pc >= (memory_start + cached_to_uncached)) &&
- (pc < (memory_start + cached_to_uncached + uncached_size)))
- pc -= cached_to_uncached;
-#endif
+ if (virt_addr_uncached(pc))
+ return CAC_ADDR(pc);
return pc;
}