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-rw-r--r--arch/arm/include/asm/assembler.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 7bb8bf9..456649e 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -299,6 +299,14 @@
usracc ldr, \reg, \ptr, \inc, \cond, \rept, \abort
.endm
+ .macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
+#ifndef CONFIG_CPU_USE_DOMAINS
+ adds \tmp, \addr, #\size - 1
+ sbcccs \tmp, \tmp, \limit
+ bcs \bad
+#endif
+ .endm
+
/* Utility macro for declaring string literals */
.macro string name:req, string
.type \name , #object