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-rw-r--r--target/arm/t32.decode4
1 files changed, 4 insertions, 0 deletions
diff --git a/target/arm/t32.decode b/target/arm/t32.decode
index f045eb62c8..8b2c487fa7 100644
--- a/target/arm/t32.decode
+++ b/target/arm/t32.decode
@@ -307,6 +307,10 @@ CLZ 1111 1010 1011 ---- 1111 .... 1000 .... @rdm
# SEV 1111 0011 1010 1111 1000 0000 0000 0100
# SEVL 1111 0011 1010 1111 1000 0000 0000 0101
+ # For M-profile minimal-RAS ESB can be a NOP, which is the
+ # default behaviour since it is in the hint space.
+ # ESB 1111 0011 1010 1111 1000 0000 0001 0000
+
# The canonical nop ends in 0000 0000, but the whole rest
# of the space is "reserved hint, behaves as nop".
NOP 1111 0011 1010 1111 1000 0000 ---- ----