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authorDave Barach <dave@barachs.net>2016-01-22 08:23:09 -0500
committerDave Barach <dave@barachs.net>2016-01-22 08:23:27 -0500
commit61efa140b1f44e0c568697fbc31cf3f430131ab2 (patch)
tree780880f2fce0882840b204eb26bd7465ed7c7e09 /vppinfra
parentbfdedbd5a3ba7e6fdc036d212253aa55c9062211 (diff)
aarch64 CPU arch / ThunderX platform initial support
Change-Id: Ia2edd3cee2c25c26c7c47a9023744b97226434c7 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'vppinfra')
-rw-r--r--vppinfra/vppinfra/bihash_24_8.h11
-rw-r--r--vppinfra/vppinfra/byte_order.h2
-rw-r--r--vppinfra/vppinfra/longjmp.S103
-rw-r--r--vppinfra/vppinfra/longjmp.h2
-rw-r--r--vppinfra/vppinfra/test_longjmp.c2
-rw-r--r--vppinfra/vppinfra/time.c5
-rw-r--r--vppinfra/vppinfra/time.h12
-rw-r--r--vppinfra/vppinfra/types.h2
-rw-r--r--vppinfra/vppinfra/vector.h4
9 files changed, 129 insertions, 14 deletions
diff --git a/vppinfra/vppinfra/bihash_24_8.h b/vppinfra/vppinfra/bihash_24_8.h
index c789c980fb6..c0dff8ccfcd 100644
--- a/vppinfra/vppinfra/bihash_24_8.h
+++ b/vppinfra/vppinfra/bihash_24_8.h
@@ -50,14 +50,6 @@ crc_u32(u32 data, u32 value)
static inline u64 clib_bihash_hash_24_8 (clib_bihash_kv_24_8_t *v)
{
-#if 0
- u64 * dp = (u64 *) &v->key[0];
- u64 value = 0;
-
- value __builtin_ia32_crc32di (dp[0], value);
- value __builtin_ia32_crc32di (dp[1], value);
- value __builtin_ia32_crc32di (dp[2], value);
-#endif
u32 * dp = (u32 *) &v->key[0];
u32 value = 0;
@@ -70,8 +62,7 @@ static inline u64 clib_bihash_hash_24_8 (clib_bihash_kv_24_8_t *v)
return value;
}
-
-#else
+#else
static inline u64 clib_bihash_hash_24_8 (clib_bihash_kv_24_8_t *v)
{
u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2];
diff --git a/vppinfra/vppinfra/byte_order.h b/vppinfra/vppinfra/byte_order.h
index 9c556327f9f..4f385f152df 100644
--- a/vppinfra/vppinfra/byte_order.h
+++ b/vppinfra/vppinfra/byte_order.h
@@ -40,7 +40,7 @@
#include <vppinfra/clib.h>
-#if defined(__x86_64__) || defined(i386)
+#if defined(__x86_64__) || defined(i386) || defined(__aarch64__)
#define CLIB_ARCH_IS_BIG_ENDIAN (0)
#define CLIB_ARCH_IS_LITTLE_ENDIAN (1)
#else
diff --git a/vppinfra/vppinfra/longjmp.S b/vppinfra/vppinfra/longjmp.S
index ac138a96257..9ba237d4489 100644
--- a/vppinfra/vppinfra/longjmp.S
+++ b/vppinfra/vppinfra/longjmp.S
@@ -580,6 +580,109 @@ clib_longjmp:
clib_calljmp:
1: B .S1 1b
+#elif defined (__aarch64__)
+/*
+ Copyright (c) 2011, 2012 ARM Ltd
+ All rights reserved.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#define GPR_LAYOUT \
+ REG_PAIR (x19, x20, 0); \
+ REG_PAIR (x21, x22, 16); \
+ REG_PAIR (x23, x24, 32); \
+ REG_PAIR (x25, x26, 48); \
+ REG_PAIR (x27, x28, 64); \
+ REG_PAIR (x29, x30, 80); \
+ REG_ONE (x16, 96)
+#define FPR_LAYOUT \
+ REG_PAIR ( d8, d9, 112); \
+ REG_PAIR (d10, d11, 128); \
+ REG_PAIR (d12, d13, 144); \
+ REG_PAIR (d14, d15, 160);
+// int clib_setjmp (jmp_buf)
+ .global clib_setjmp
+ .type clib_setjmp, %function
+clib_setjmp:
+ mov x16, sp
+#define REG_PAIR(REG1, REG2, OFFS) stp REG1, REG2, [x0, OFFS]
+#define REG_ONE(REG1, OFFS) str REG1, [x0, OFFS]
+ GPR_LAYOUT
+ FPR_LAYOUT
+#undef REG_PAIR
+#undef REG_ONE
+ mov x0, x1
+ ret
+ .size clib_setjmp, .-clib_setjmp
+// void clib_longjmp (jmp_buf, int) __attribute__ ((noreturn))
+ .global clib_longjmp
+ .type clib_longjmp, %function
+clib_longjmp:
+#define REG_PAIR(REG1, REG2, OFFS) ldp REG1, REG2, [x0, OFFS]
+#define REG_ONE(REG1, OFFS) ldr REG1, [x0, OFFS]
+ GPR_LAYOUT
+ FPR_LAYOUT
+#undef REG_PAIR
+#undef REG_ONE
+ mov sp, x16
+ mov x0, x1
+ // cmp w1, #0
+ // cinc w0, w1, eq
+ // use br not ret, as ret is guaranteed to mispredict
+ br x30
+ .size clib_longjmp, .-clib_longjmp
+
+
+// void clib_calljmp (x0=function, x1=arg, x2=new_stack)
+ .global clib_calljmp
+ .type clib_calljmp, %function
+clib_calljmp:
+ // save fn ptr
+ mov x3, x0
+ // set up fn arg
+ mov x0, x1
+ // switch stacks
+ mov x4, sp
+
+ // space for saved sp, lr on new stack
+ sub x2, x2, #16
+ mov sp, x2
+
+ // save old sp and link register on new stack
+ str x4, [sp]
+ str x30,[sp,#8]
+ mov x4, sp
+
+ // go there
+ blr x3
+
+ // restore old sp and link register
+ mov x4, sp
+
+ ldr x3, [x4]
+ ldr x30,[x4, #8]
+ mov sp, x3
+ ret
+ .size clib_calljmp, .-clib_calljmp
#else
#error "unknown machine"
#endif
diff --git a/vppinfra/vppinfra/longjmp.h b/vppinfra/vppinfra/longjmp.h
index a28b20cdae6..7252aa3cd62 100644
--- a/vppinfra/vppinfra/longjmp.h
+++ b/vppinfra/vppinfra/longjmp.h
@@ -91,6 +91,8 @@
/* setjmp/longjmp not supported for the moment. */
#define CLIB_ARCH_LONGJMP_REGS 0
+#elif defined(__aarch64__)
+#define CLIB_ARCH_LONGJMP_REGS (22)
#else
#error "unknown machine"
#endif
diff --git a/vppinfra/vppinfra/test_longjmp.c b/vppinfra/vppinfra/test_longjmp.c
index 40b144080b6..299de258c2a 100644
--- a/vppinfra/vppinfra/test_longjmp.c
+++ b/vppinfra/vppinfra/test_longjmp.c
@@ -92,7 +92,7 @@ static uword f3 (uword arg)
static void test_calljmp (unformat_input_t * input)
{
- static u8 stack[32*1024];
+ static u8 stack[32*1024] __attribute__((aligned(16)));
uword v;
v = clib_calljmp (f3, 0, stack + sizeof (stack));
diff --git a/vppinfra/vppinfra/time.c b/vppinfra/vppinfra/time.c
index 0da469eb054..9af599ac10c 100644
--- a/vppinfra/vppinfra/time.c
+++ b/vppinfra/vppinfra/time.c
@@ -78,6 +78,11 @@ static f64 clock_frequency_from_proc_filesystem (void)
int fd;
unformat_input_t input;
+/* $$$$ aarch64 kernel doesn't report "cpu MHz" */
+#if defined(__aarch64__)
+ return 0.0;
+#endif
+
cpu_freq = 0;
fd = open ("/proc/cpuinfo", 0);
if (fd < 0)
diff --git a/vppinfra/vppinfra/time.h b/vppinfra/vppinfra/time.h
index 524eff6c7a1..3c481082ced 100644
--- a/vppinfra/vppinfra/time.h
+++ b/vppinfra/vppinfra/time.h
@@ -143,8 +143,18 @@ always_inline u64 clib_cpu_time_now (void)
return ((u64)h << 32) | l;
}
-#else
+#elif defined (__aarch64__)
+always_inline u64 clib_cpu_time_now (void)
+{
+ u64 tsc;
+
+ /* Works on Cavium ThunderX. Other platforms: YMMV */
+ asm volatile("mrs %0, cntvct_el0" : "=r" (tsc));
+ return tsc;
+}
+
+#else
#error "don't know how to read CPU time stamp"
#endif
diff --git a/vppinfra/vppinfra/types.h b/vppinfra/vppinfra/types.h
index d43e9613b03..d5ad6ba18cd 100644
--- a/vppinfra/vppinfra/types.h
+++ b/vppinfra/vppinfra/types.h
@@ -77,7 +77,7 @@ typedef unsigned long long u64;
#define log2_uword_bits 6
#define clib_address_bits _MIPS_SZPTR
-#elif defined(alpha) || defined(__x86_64__) || defined (__powerpc64__)
+#elif defined(alpha) || defined(__x86_64__) || defined (__powerpc64__) || defined (__aarch64__)
typedef int i32;
typedef long i64;
diff --git a/vppinfra/vppinfra/vector.h b/vppinfra/vppinfra/vector.h
index b3019333731..84c52a2836d 100644
--- a/vppinfra/vppinfra/vector.h
+++ b/vppinfra/vppinfra/vector.h
@@ -61,6 +61,10 @@
#define _vector_size(n) __attribute__ ((vector_size (n)))
+#if defined (__aarch64__)
+typedef unsigned int u32x4 _vector_size (16);
+#endif
+
#ifdef CLIB_HAVE_VEC64
/* Signed 64 bit. */
typedef char i8x8 _vector_size (8);