Work around a clang 6.0.0 issue with rep prefixes followed by .byte

directives (as reported in https://bugs.llvm.org/show_bug.cgi?id=35749),
by defining the rep prefix with yet another .byte directive.

This is a temporary fix, to be reverted before merging back to head,
until upstream has a proper fix for this.

This commit is contained in:

Dimitry Andric

2017-12-29 12:49:24 +00:00

parent 42e6db5330

commit 2055323b2c

1 changed files with 1 additions and 1 deletions

									
										sys/crypto/via/padlock_cipher.c
									
		+1
		-1
	
												View File
												
				@@ -88,7 +88,7 @@ padlock_cbc(void *in, void *out, size_t count, void *key, union padlock_cw *cw,

					__asm __volatile(

						"pushf				\n\t"

						"popf				\n\t"

						"rep				\n\t"

						".byte	0xf3			\n\t"

						".byte	0x0f, 0xa7, 0xd0"

							: "+a" (iv), "+c" (count), "+D" (out), "+S" (in)

							: "b" (key), "d" (cw)