Use uint128_t and __asm__ in clang-cl.
clang-cl does not define __GNUC__ but is still a functioning clang. We
should be able to use our uint128_t and __asm__ code in it on Windows.
Change-Id: I67310ee68baa0c0c947b2441c265b019ef12af7e
Reviewed-on: https://boringssl-review.googlesource.com/22184
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
diff --git a/crypto/fipsmodule/bn/asm/x86_64-gcc.c b/crypto/fipsmodule/bn/asm/x86_64-gcc.c
index bfd770f..12ffc3f 100644
--- a/crypto/fipsmodule/bn/asm/x86_64-gcc.c
+++ b/crypto/fipsmodule/bn/asm/x86_64-gcc.c
@@ -53,7 +53,8 @@
#include <openssl/bn.h>
// TODO(davidben): Get this file working on Windows x64.
-#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && defined(__GNUC__)
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+ (defined(__GNUC__) || defined(__clang__))
#include "../internal.h"
@@ -534,4 +535,4 @@
#undef mul_add_c2
#undef sqr_add_c2
-#endif // !NO_ASM && X86_64 && __GNUC__
+#endif // !NO_ASM && X86_64 && (__GNUC__ || __clang__)
diff --git a/crypto/fipsmodule/bn/div.c b/crypto/fipsmodule/bn/div.c
index 1bcff50..ded19e2 100644
--- a/crypto/fipsmodule/bn/div.c
+++ b/crypto/fipsmodule/bn/div.c
@@ -155,18 +155,18 @@
//
// These issues aren't specific to x86 and x86_64, so it might be worthwhile
// to add more assembly language implementations.
-#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86) && defined(__GNUC__)
- __asm__ volatile (
- "divl %4"
- : "=a"(*quotient_out), "=d"(*rem_out)
- : "a"(n1), "d"(n0), "rm"(d0)
- : "cc" );
-#elif !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && defined(__GNUC__)
- __asm__ volatile (
- "divq %4"
- : "=a"(*quotient_out), "=d"(*rem_out)
- : "a"(n1), "d"(n0), "rm"(d0)
- : "cc" );
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86) && \
+ (defined(__GNUC__) || defined(__clang__))
+ __asm__ volatile("divl %4"
+ : "=a"(*quotient_out), "=d"(*rem_out)
+ : "a"(n1), "d"(n0), "rm"(d0)
+ : "cc");
+#elif !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+ (defined(__GNUC__) || defined(__clang__))
+ __asm__ volatile("divq %4"
+ : "=a"(*quotient_out), "=d"(*rem_out)
+ : "a"(n1), "d"(n0), "rm"(d0)
+ : "cc");
#else
#if defined(BN_ULLONG)
BN_ULLONG n = (((BN_ULLONG)n0) << BN_BITS2) | n1;
diff --git a/crypto/fipsmodule/bn/generic.c b/crypto/fipsmodule/bn/generic.c
index b70080f..8212409 100644
--- a/crypto/fipsmodule/bn/generic.c
+++ b/crypto/fipsmodule/bn/generic.c
@@ -64,7 +64,8 @@
// This file has two other implementations: x86 assembly language in
// asm/bn-586.pl and x86_64 inline assembly in asm/x86_64-gcc.c.
#if defined(OPENSSL_NO_ASM) || \
- !(defined(OPENSSL_X86) || (defined(OPENSSL_X86_64) && defined(__GNUC__)))
+ !(defined(OPENSSL_X86) || \
+ (defined(OPENSSL_X86_64) && (defined(__GNUC__) || defined(__clang__))))
#ifdef BN_ULLONG
#define mul_add(r, a, w, c) \
diff --git a/crypto/fipsmodule/bn/internal.h b/crypto/fipsmodule/bn/internal.h
index ecd7d6c..4fca399 100644
--- a/crypto/fipsmodule/bn/internal.h
+++ b/crypto/fipsmodule/bn/internal.h
@@ -140,7 +140,7 @@
#if defined(OPENSSL_64_BIT)
-#if !defined(_MSC_VER)
+#if !defined(_MSC_VER) || defined(__clang__)
// MSVC doesn't support two-word integers on 64-bit.
#define BN_ULLONG uint128_t
#endif
diff --git a/crypto/fipsmodule/ec/ec.c b/crypto/fipsmodule/ec/ec.c
index a39ca59..f432f79 100644
--- a/crypto/fipsmodule/ec/ec.c
+++ b/crypto/fipsmodule/ec/ec.c
@@ -212,13 +212,6 @@
0xB7, 0x1E, 0x91, 0x38, 0x64, 0x09,
};
-// MSan appears to have a bug that causes code to be miscompiled in opt mode.
-// While that is being looked at, don't run the uint128_t code under MSan.
-#if defined(OPENSSL_64_BIT) && !defined(OPENSSL_WINDOWS) && \
- !defined(MEMORY_SANITIZER)
-#define BORINGSSL_USE_INT128_CODE
-#endif
-
DEFINE_METHOD_FUNCTION(struct built_in_curves, OPENSSL_built_in_curves) {
// 1.3.132.0.35
static const uint8_t kOIDP521[] = {0x2b, 0x81, 0x04, 0x00, 0x23};
diff --git a/crypto/fipsmodule/ec/internal.h b/crypto/fipsmodule/ec/internal.h
index 39c9349..3536c78 100644
--- a/crypto/fipsmodule/ec/internal.h
+++ b/crypto/fipsmodule/ec/internal.h
@@ -79,6 +79,13 @@
#endif
+// MSan appears to have a bug that causes code to be miscompiled in opt mode.
+// While that is being looked at, don't run the uint128_t code under MSan.
+#if defined(OPENSSL_64_BIT) && (!defined(_MSC_VER) || defined(__clang__)) && \
+ !defined(MEMORY_SANITIZER)
+#define BORINGSSL_USE_INT128_CODE
+#endif
+
struct ec_method_st {
int (*group_init)(EC_GROUP *);
void (*group_finish)(EC_GROUP *);
diff --git a/crypto/fipsmodule/ec/p256-64.c b/crypto/fipsmodule/ec/p256-64.c
index f7d1ff1..ac038c0 100644
--- a/crypto/fipsmodule/ec/p256-64.c
+++ b/crypto/fipsmodule/ec/p256-64.c
@@ -21,8 +21,6 @@
#include <openssl/base.h>
-#if defined(OPENSSL_64_BIT) && !defined(OPENSSL_WINDOWS)
-
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/err.h>
@@ -35,6 +33,8 @@
#include "internal.h"
+#if defined(BORINGSSL_USE_INT128_CODE)
+
// The underlying field. P256 operates over GF(2^256-2^224+2^192+2^96-1). We
// can serialise an element of this field into 32 bytes. We call this an
// felem_bytearray.
@@ -1705,4 +1705,4 @@
out->field_decode = NULL;
};
-#endif // 64_BIT && !WINDOWS
+#endif // BORINGSSL_USE_INT128_CODE
