From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40304) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1by3Tw-00052B-My for qemu-devel@nongnu.org; Sat, 22 Oct 2016 17:05:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1by3Tu-0001nw-BM for qemu-devel@nongnu.org; Sat, 22 Oct 2016 17:05:32 -0400 Received: from mail-pf0-x242.google.com ([2607:f8b0:400e:c00::242]:34904) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1by3Tu-0001nE-1W for qemu-devel@nongnu.org; Sat, 22 Oct 2016 17:05:30 -0400 Received: by mail-pf0-x242.google.com with SMTP id s8so12071497pfj.2 for ; Sat, 22 Oct 2016 14:05:29 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Sat, 22 Oct 2016 14:04:53 -0700 Message-Id: <1477170324-17783-5-git-send-email-rth@twiddle.net> In-Reply-To: <1477170324-17783-1-git-send-email-rth@twiddle.net> References: <1477170324-17783-1-git-send-email-rth@twiddle.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 04/35] int128: Use __int128 if available List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org Reviewed-by: Emilio G. Cota Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- include/qemu/int128.h | 135 +++++++++++++++++++++++++++++++++++++++++++++++++- tests/test-int128.c | 22 ++++---- 2 files changed, 145 insertions(+), 12 deletions(-) diff --git a/include/qemu/int128.h b/include/qemu/int128.h index 52aaf99..64a7aca 100644 --- a/include/qemu/int128.h +++ b/include/qemu/int128.h @@ -1,6 +1,138 @@ #ifndef INT128_H #define INT128_H +#ifdef CONFIG_INT128 + +typedef __int128_t Int128; + +static inline Int128 int128_make64(uint64_t a) +{ + return a; +} + +static inline uint64_t int128_get64(Int128 a) +{ + uint64_t r = a; + assert(r == a); + return r; +} + +static inline uint64_t int128_getlo(Int128 a) +{ + return a; +} + +static inline int64_t int128_gethi(Int128 a) +{ + return a >> 64; +} + +static inline Int128 int128_zero(void) +{ + return 0; +} + +static inline Int128 int128_one(void) +{ + return 1; +} + +static inline Int128 int128_2_64(void) +{ + return (Int128)1 << 64; +} + +static inline Int128 int128_exts64(int64_t a) +{ + return a; +} + +static inline Int128 int128_and(Int128 a, Int128 b) +{ + return a & b; +} + +static inline Int128 int128_rshift(Int128 a, int n) +{ + return a >> n; +} + +static inline Int128 int128_add(Int128 a, Int128 b) +{ + return a + b; +} + +static inline Int128 int128_neg(Int128 a) +{ + return -a; +} + +static inline Int128 int128_sub(Int128 a, Int128 b) +{ + return a - b; +} + +static inline bool int128_nonneg(Int128 a) +{ + return a >= 0; +} + +static inline bool int128_eq(Int128 a, Int128 b) +{ + return a == b; +} + +static inline bool int128_ne(Int128 a, Int128 b) +{ + return a != b; +} + +static inline bool int128_ge(Int128 a, Int128 b) +{ + return a >= b; +} + +static inline bool int128_lt(Int128 a, Int128 b) +{ + return a < b; +} + +static inline bool int128_le(Int128 a, Int128 b) +{ + return a <= b; +} + +static inline bool int128_gt(Int128 a, Int128 b) +{ + return a > b; +} + +static inline bool int128_nz(Int128 a) +{ + return a != 0; +} + +static inline Int128 int128_min(Int128 a, Int128 b) +{ + return a < b ? a : b; +} + +static inline Int128 int128_max(Int128 a, Int128 b) +{ + return a > b ? a : b; +} + +static inline void int128_addto(Int128 *a, Int128 b) +{ + *a += b; +} + +static inline void int128_subfrom(Int128 *a, Int128 b) +{ + *a -= b; +} + +#else /* !CONFIG_INT128 */ typedef struct Int128 Int128; @@ -153,4 +285,5 @@ static inline void int128_subfrom(Int128 *a, Int128 b) *a = int128_sub(*a, b); } -#endif +#endif /* CONFIG_INT128 */ +#endif /* INT128_H */ diff --git a/tests/test-int128.c b/tests/test-int128.c index 4390123..b86a3c7 100644 --- a/tests/test-int128.c +++ b/tests/test-int128.c @@ -41,7 +41,7 @@ static Int128 expand(uint32_t x) uint64_t l, h; l = expand16(x & 65535); h = expand16(x >> 16); - return (Int128) {l, h}; + return (Int128) int128_make128(l, h); }; static void test_and(void) @@ -54,8 +54,8 @@ static void test_and(void) Int128 b = expand(tests[j]); Int128 r = expand(tests[i] & tests[j]); Int128 s = int128_and(a, b); - g_assert_cmpuint(r.lo, ==, s.lo); - g_assert_cmpuint(r.hi, ==, s.hi); + g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s)); + g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s)); } } } @@ -70,8 +70,8 @@ static void test_add(void) Int128 b = expand(tests[j]); Int128 r = expand(tests[i] + tests[j]); Int128 s = int128_add(a, b); - g_assert_cmpuint(r.lo, ==, s.lo); - g_assert_cmpuint(r.hi, ==, s.hi); + g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s)); + g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s)); } } } @@ -86,8 +86,8 @@ static void test_sub(void) Int128 b = expand(tests[j]); Int128 r = expand(tests[i] - tests[j]); Int128 s = int128_sub(a, b); - g_assert_cmpuint(r.lo, ==, s.lo); - g_assert_cmpuint(r.hi, ==, s.hi); + g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s)); + g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s)); } } } @@ -100,8 +100,8 @@ static void test_neg(void) Int128 a = expand(tests[i]); Int128 r = expand(-tests[i]); Int128 s = int128_neg(a); - g_assert_cmpuint(r.lo, ==, s.lo); - g_assert_cmpuint(r.hi, ==, s.hi); + g_assert_cmpuint(int128_getlo(r), ==, int128_getlo(s)); + g_assert_cmpuint(int128_gethi(r), ==, int128_gethi(s)); } } @@ -180,8 +180,8 @@ test_rshift_one(uint32_t x, int n, uint64_t h, uint64_t l) { Int128 a = expand(x); Int128 r = int128_rshift(a, n); - g_assert_cmpuint(r.lo, ==, l); - g_assert_cmpuint(r.hi, ==, h); + g_assert_cmpuint(int128_getlo(r), ==, l); + g_assert_cmpuint(int128_gethi(r), ==, h); } static void test_rshift(void) -- 2.7.4