1 files changed, 4 insertions, 3 deletions

diff --git a/src/lib/libcrypto/perlasm/x86unix.pl b/src/lib/libcrypto/perlasm/x86unix.pl
index 53ad5f4927..9717d18557 100644
--- a/src/lib/libcrypto/perlasm/x86unix.pl
+++ b/src/lib/libcrypto/perlasm/x86unix.pl
@@ -143,12 +143,12 @@ sub main'shl	{ &out2("sall",@_); }
 sub main'shr    { &out2("shrl",@_); }
 sub main'xor    { &out2("xorl",@_); }
 sub main'xorb   { &out2("xorb",@_); }
-sub main'add    { &out2("addl",@_); }
+sub main'add    { &out2($_[0]=~/%[a-d][lh]/?"addb":"addl",@_); }
 sub main'adc    { &out2("adcl",@_); }
 sub main'sub    { &out2("subl",@_); }
 sub main'rotl   { &out2("roll",@_); }
 sub main'rotr   { &out2("rorl",@_); }
-sub main'exch   { &out2("xchg",@_); }
+sub main'exch   { &out2($_[0]=~/%[a-d][lh]/?"xchgb":"xchgl",@_); }
 sub main'cmp    { &out2("cmpl",@_); }
 sub main'lea    { &out2("leal",@_); }
 sub main'mul    { &out1("mull",@_); }
@@ -170,7 +170,7 @@ sub main'jc	{ &out1("jc",@_); }
 sub main'jnc    { &out1("jnc",@_); }
 sub main'jno    { &out1("jno",@_); }
 sub main'dec    { &out1("decl",@_); }
-sub main'inc    { &out1("incl",@_); }
+sub main'inc    { &out1($_[0]=~/%[a-d][hl]/?"incb":"incl",@_); }
 sub main'push   { &out1("pushl",@_); $stack+=4; }
 sub main'pop    { &out1("popl",@_); $stack-=4; }
 sub main'pushf  { &out0("pushf"); $stack+=4; }
@@ -179,6 +179,7 @@ sub main'not	{ &out1("notl",@_); }
 sub main'call   { &out1("call",($_[0]=~/^\.L/?'':$under).$_[0]); }
 sub main'ret    { &out0("ret"); }
 sub main'nop    { &out0("nop"); }
+sub main'movz   { &out2("movzbl",@_); }
 
 # The bswapl instruction is new for the 486. Emulate if i386.
 sub main'bswap