Merge remote-tracking branch 'origin/pr/1949' into development
diff --git a/ChangeLog b/ChangeLog
index 122cd2c..ea182c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -26,6 +26,11 @@
* Provide an abstraction of vsnprintf to allow alternative implementations
for platforms that don't provide it. Based on contributions by Joris Aerts
and Nathaniel Wesley Filardo.
+ * Fix clobber list in MIPS assembly for large integer multiplication.
+ Previously, this could lead to functionally incorrect assembly being
+ produced by some optimizing compilers, showing up as failures in
+ e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
+ by Aurelien Jarno and submitted by Jeffrey Martin.
= mbed TLS 2.16.0 branch released 2018-12-21
diff --git a/include/mbedtls/bn_mul.h b/include/mbedtls/bn_mul.h
index ac1e3f9..c33bd8d 100644
--- a/include/mbedtls/bn_mul.h
+++ b/include/mbedtls/bn_mul.h
@@ -756,7 +756,7 @@
"sw $10, %2 \n\t" \
: "=m" (c), "=m" (d), "=m" (s) \
: "m" (s), "m" (d), "m" (c), "m" (b) \
- : "$9", "$10", "$11", "$12", "$13", "$14", "$15" \
+ : "$9", "$10", "$11", "$12", "$13", "$14", "$15", "lo", "hi" \
);
#endif /* MIPS */