65a096116f
IA64 atomic support was deleted some time ago. Some of the references to the architecture were not removed when the atomic support was. This commit removes those lingering references. IA64 will continue to work unsupported with the built-in atomics. Signed-off-by: Nathan Hjelm <hjelmn@google.com>
1405 строки
49 KiB
Plaintext
1405 строки
49 KiB
Plaintext
dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2018 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2006 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2008-2018 Cisco Systems, Inc. All rights reserved.
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dnl Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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dnl Copyright (c) 2015-2018 Research Organization for Information Science
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dnl and Technology (RIST). All rights reserved.
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dnl Copyright (c) 2014-2018 Los Alamos National Security, LLC. All rights
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dnl reserved.
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dnl Copyright (c) 2017 Amazon.com, Inc. or its affiliates. All Rights
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dnl reserved.
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dnl Copyright (c) 2020 Google, LLC. All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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dnl
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dnl $HEADER$
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dnl
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dnl This is a C test to see if 128-bit __atomic_compare_exchange_n()
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dnl actually works (e.g., it compiles and links successfully on
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dnl ARM64+clang, but returns incorrect answers as of August 2018).
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AC_DEFUN([OPAL_ATOMIC_COMPARE_EXCHANGE_N_TEST_SOURCE],[[
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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typedef union {
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uint64_t fake@<:@2@:>@;
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__int128 real;
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} ompi128;
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static void test1(void)
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{
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// As of Aug 2018, we could not figure out a way to assign 128-bit
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// constants -- the compilers would not accept it. So use a fake
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// union to assign 2 uin64_t's to make a single __int128.
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 expected = { .fake = { 0x11EEDDCCBBAA0099, 0x88776655443322FF }};
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ompi128 desired = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = __atomic_compare_exchange_n(&ptr.real, &expected.real,
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desired.real, true,
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__ATOMIC_RELAXED, __ATOMIC_RELAXED);
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if ( !(r == false && ptr.real == expected.real)) {
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exit(1);
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}
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}
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static void test2(void)
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{
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 expected = ptr;
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ompi128 desired = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = __atomic_compare_exchange_n(&ptr.real, &expected.real,
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desired.real, true,
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__ATOMIC_RELAXED, __ATOMIC_RELAXED);
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if (!(r == true && ptr.real == desired.real)) {
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exit(2);
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}
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}
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int main(int argc, char** argv)
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{
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test1();
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test2();
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return 0;
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}
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]])
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dnl ------------------------------------------------------------------
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dnl This is a C test to see if 128-bit __sync_bool_compare_and_swap()
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dnl actually works (e.g., it compiles and links successfully on
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dnl ARM64+clang, but returns incorrect answers as of August 2018).
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AC_DEFUN([OPAL_SYNC_BOOL_COMPARE_AND_SWAP_TEST_SOURCE],[[
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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typedef union {
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uint64_t fake@<:@2@:>@;
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__int128 real;
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} ompi128;
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static void test1(void)
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{
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// As of Aug 2018, we could not figure out a way to assign 128-bit
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// constants -- the compilers would not accept it. So use a fake
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// union to assign 2 uin64_t's to make a single __int128.
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 oldval = { .fake = { 0x11EEDDCCBBAA0099, 0x88776655443322FF }};
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ompi128 newval = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = __sync_bool_compare_and_swap(&ptr.real, oldval.real, newval.real);
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if (!(r == false && ptr.real != newval.real)) {
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exit(1);
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}
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}
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static void test2(void)
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{
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 oldval = ptr;
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ompi128 newval = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = __sync_bool_compare_and_swap(&ptr.real, oldval.real, newval.real);
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if (!(r == true && ptr.real == newval.real)) {
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exit(2);
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}
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}
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int main(int argc, char** argv)
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{
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test1();
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test2();
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return 0;
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}
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]])
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dnl This is a C test to see if 128-bit __atomic_compare_exchange_n()
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dnl actually works (e.g., it compiles and links successfully on
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dnl ARM64+clang, but returns incorrect answers as of August 2018).
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AC_DEFUN([OPAL_ATOMIC_COMPARE_EXCHANGE_STRONG_TEST_SOURCE],[[
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdatomic.h>
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typedef union {
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uint64_t fake@<:@2@:>@;
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_Atomic __int128 real;
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} ompi128;
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static void test1(void)
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{
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// As of Aug 2018, we could not figure out a way to assign 128-bit
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// constants -- the compilers would not accept it. So use a fake
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// union to assign 2 uin64_t's to make a single __int128.
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 expected = { .fake = { 0x11EEDDCCBBAA0099, 0x88776655443322FF }};
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ompi128 desired = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = atomic_compare_exchange_strong (&ptr.real, &expected.real,
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desired.real, true,
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atomic_relaxed, atomic_relaxed);
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if ( !(r == false && ptr.real == expected.real)) {
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exit(1);
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}
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}
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static void test2(void)
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{
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ompi128 ptr = { .fake = { 0xFFEEDDCCBBAA0099, 0x8877665544332211 }};
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ompi128 expected = ptr;
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ompi128 desired = { .fake = { 0x1122DDCCBBAA0099, 0x887766554433EEFF }};
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bool r = atomic_compare_exchange_strong (&ptr.real, &expected.real,
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desired.real, true,
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atomic_relaxed, atomic_relaxed);
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if (!(r == true && ptr.real == desired.real)) {
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exit(2);
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}
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}
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int main(int argc, char** argv)
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{
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test1();
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test2();
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return 0;
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}
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]])
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dnl ------------------------------------------------------------------
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dnl
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dnl Check to see if a specific function is linkable.
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dnl
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dnl Check with:
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dnl 1. No compiler/linker flags.
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dnl 2. CFLAGS += -mcx16
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dnl 3. LIBS += -latomic
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dnl 4. Finally, if it links ok with any of #1, #2, or #3, actually try
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dnl to run the test code (if we're not cross-compiling) and verify
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dnl that it actually gives us the correct result.
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dnl
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dnl Note that we unfortunately can't use AC SEARCH_LIBS because its
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dnl check incorrectly fails (because these functions are special compiler
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dnl intrinsics -- SEARCH_LIBS tries with "check FUNC()", which the
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dnl compiler complains doesn't match the internal prototype). So we have
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dnl to use our own LINK_IFELSE tests. Indeed, since these functions are
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dnl so special, we actually need a valid source code that calls the
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dnl functions with correct arguments, etc. It's not enough, for example,
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dnl to do the usual "try to set a function pointer to the symbol" trick to
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dnl determine if these functions are available, because the compiler may
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dnl not implement these as actual symbols. So just try to link a real
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dnl test code.
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dnl
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dnl $1: function name to print
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dnl $2: program to test
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dnl $3: action if any of 1, 2, or 3 succeeds
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dnl #4: action if all of 1, 2, and 3 fail
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dnl
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AC_DEFUN([OPAL_ASM_CHECK_ATOMIC_FUNC],[
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OPAL_VAR_SCOPE_PUSH([opal_asm_check_func_happy opal_asm_check_func_CFLAGS_save opal_asm_check_func_LIBS_save])
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opal_asm_check_func_CFLAGS_save=$CFLAGS
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opal_asm_check_func_LIBS_save=$LIBS
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dnl Check with no compiler/linker flags
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AC_MSG_CHECKING([for $1])
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AC_LINK_IFELSE([$2],
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[opal_asm_check_func_happy=1
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AC_MSG_RESULT([yes])],
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[opal_asm_check_func_happy=0
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AC_MSG_RESULT([no])])
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dnl If that didn't work, try again with CFLAGS+=mcx16
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AS_IF([test $opal_asm_check_func_happy -eq 0],
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[AC_MSG_CHECKING([for $1 with -mcx16])
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CFLAGS="$CFLAGS -mcx16"
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AC_LINK_IFELSE([$2],
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[opal_asm_check_func_happy=1
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AC_MSG_RESULT([yes])],
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[opal_asm_check_func_happy=0
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CFLAGS=$opal_asm_check_func_CFLAGS_save
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AC_MSG_RESULT([no])])
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])
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dnl If that didn't work, try again with LIBS+=-latomic
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AS_IF([test $opal_asm_check_func_happy -eq 0],
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[AC_MSG_CHECKING([for $1 with -latomic])
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LIBS="$LIBS -latomic"
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AC_LINK_IFELSE([$2],
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[opal_asm_check_func_happy=1
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AC_MSG_RESULT([yes])],
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[opal_asm_check_func_happy=0
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LIBS=$opal_asm_check_func_LIBS_save
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AC_MSG_RESULT([no])])
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])
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dnl If we have it, try it and make sure it gives a correct result.
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dnl As of Aug 2018, we know that it links but does *not* work on clang
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dnl 6 on ARM64.
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AS_IF([test $opal_asm_check_func_happy -eq 1],
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[AC_MSG_CHECKING([if $1() gives correct results])
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AC_RUN_IFELSE([$2],
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[AC_MSG_RESULT([yes])],
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[opal_asm_check_func_happy=0
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AC_MSG_RESULT([no])],
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[AC_MSG_RESULT([cannot test -- assume yes (cross compiling)])])
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])
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dnl If we were unsuccessful, restore CFLAGS/LIBS
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AS_IF([test $opal_asm_check_func_happy -eq 0],
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[CFLAGS=$opal_asm_check_func_CFLAGS_save
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LIBS=$opal_asm_check_func_LIBS_save])
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dnl Run the user actions
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AS_IF([test $opal_asm_check_func_happy -eq 1], [$3], [$4])
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OPAL_VAR_SCOPE_POP
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])
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dnl ------------------------------------------------------------------
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AC_DEFUN([OPAL_CHECK_SYNC_BUILTIN_CSWAP_INT128], [
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OPAL_VAR_SCOPE_PUSH([sync_bool_compare_and_swap_128_result])
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# Do we have __sync_bool_compare_and_swap?
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# Use a special macro because we need to check with a few different
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# CFLAGS/LIBS.
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OPAL_ASM_CHECK_ATOMIC_FUNC([__sync_bool_compare_and_swap],
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[AC_LANG_SOURCE(OPAL_SYNC_BOOL_COMPARE_AND_SWAP_TEST_SOURCE)],
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[sync_bool_compare_and_swap_128_result=1],
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[sync_bool_compare_and_swap_128_result=0])
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AC_DEFINE_UNQUOTED([OPAL_HAVE_SYNC_BUILTIN_CSWAP_INT128],
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[$sync_bool_compare_and_swap_128_result],
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[Whether the __sync builtin atomic compare and swap supports 128-bit values])
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OPAL_VAR_SCOPE_POP
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])
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AC_DEFUN([OPAL_CHECK_SYNC_BUILTINS], [
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AC_MSG_CHECKING([for __sync builtin atomics])
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AC_TRY_LINK([long tmp;], [__sync_synchronize();
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__sync_bool_compare_and_swap(&tmp, 0, 1);
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__sync_add_and_fetch(&tmp, 1);],
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[AC_MSG_RESULT([yes])
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$1],
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[AC_MSG_RESULT([no])
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$2])
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AC_MSG_CHECKING([for 64-bit __sync builtin atomics])
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AC_TRY_LINK([
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#include <stdint.h>
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uint64_t tmp;], [
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__sync_bool_compare_and_swap(&tmp, 0, 1);
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__sync_add_and_fetch(&tmp, 1);],
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[AC_MSG_RESULT([yes])
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opal_asm_sync_have_64bit=1],
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[AC_MSG_RESULT([no])
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opal_asm_sync_have_64bit=0])
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AC_DEFINE_UNQUOTED([OPAL_ASM_SYNC_HAVE_64BIT],[$opal_asm_sync_have_64bit],
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[Whether 64-bit is supported by the __sync builtin atomics])
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# Check for 128-bit support
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OPAL_CHECK_SYNC_BUILTIN_CSWAP_INT128
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])
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AC_DEFUN([OPAL_CHECK_GCC_BUILTIN_CSWAP_INT128], [
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OPAL_VAR_SCOPE_PUSH([atomic_compare_exchange_n_128_result atomic_compare_exchange_n_128_CFLAGS_save atomic_compare_exchange_n_128_LIBS_save])
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atomic_compare_exchange_n_128_CFLAGS_save=$CFLAGS
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atomic_compare_exchange_n_128_LIBS_save=$LIBS
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# Do we have __sync_bool_compare_and_swap?
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# Use a special macro because we need to check with a few different
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# CFLAGS/LIBS.
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OPAL_ASM_CHECK_ATOMIC_FUNC([__atomic_compare_exchange_n],
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[AC_LANG_SOURCE(OPAL_ATOMIC_COMPARE_EXCHANGE_N_TEST_SOURCE)],
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[atomic_compare_exchange_n_128_result=1],
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[atomic_compare_exchange_n_128_result=0])
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# If we have it and it works, check to make sure it is always lock
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# free.
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AS_IF([test $atomic_compare_exchange_n_128_result -eq 1],
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[AC_MSG_CHECKING([if __int128 atomic compare-and-swap is always lock-free])
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AC_RUN_IFELSE([AC_LANG_PROGRAM([], [if (!__atomic_always_lock_free(16, 0)) { return 1; }])],
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[AC_MSG_RESULT([yes])],
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[atomic_compare_exchange_n_128_result=0
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# If this test fails, need to reset CFLAGS/LIBS (the
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# above tests atomically set CFLAGS/LIBS or not; this
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# test is running after the fact, so we have to undo
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# the side-effects of setting CFLAGS/LIBS if the above
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# tests passed).
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CFLAGS=$atomic_compare_exchange_n_128_CFLAGS_save
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LIBS=$atomic_compare_exchange_n_128_LIBS_save
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AC_MSG_RESULT([no])],
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[AC_MSG_RESULT([cannot test -- assume yes (cross compiling)])])
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])
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AC_DEFINE_UNQUOTED([OPAL_HAVE_GCC_BUILTIN_CSWAP_INT128],
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[$atomic_compare_exchange_n_128_result],
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[Whether the __atomic builtin atomic compare swap is both supported and lock-free on 128-bit values])
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dnl If we could not find decent support for 128-bits __atomic let's
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dnl try the GCC _sync
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AS_IF([test $atomic_compare_exchange_n_128_result -eq 0],
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[OPAL_CHECK_SYNC_BUILTIN_CSWAP_INT128])
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OPAL_VAR_SCOPE_POP
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])
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AC_DEFUN([OPAL_CHECK_GCC_ATOMIC_BUILTINS], [
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AC_MSG_CHECKING([for __atomic builtin atomics])
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AC_TRY_LINK([
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#include <stdint.h>
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uint32_t tmp, old = 0;
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uint64_t tmp64, old64 = 0;], [
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__atomic_thread_fence(__ATOMIC_SEQ_CST);
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__atomic_compare_exchange_n(&tmp, &old, 1, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
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__atomic_add_fetch(&tmp, 1, __ATOMIC_RELAXED);
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__atomic_compare_exchange_n(&tmp64, &old64, 1, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
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__atomic_add_fetch(&tmp64, 1, __ATOMIC_RELAXED);],
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[AC_MSG_RESULT([yes])
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$1],
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[AC_MSG_RESULT([no])
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$2])
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# Check for 128-bit support
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OPAL_CHECK_GCC_BUILTIN_CSWAP_INT128
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])
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AC_DEFUN([OPAL_CHECK_C11_CSWAP_INT128], [
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OPAL_VAR_SCOPE_PUSH([atomic_compare_exchange_result atomic_compare_exchange_CFLAGS_save atomic_compare_exchange_LIBS_save])
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atomic_compare_exchange_CFLAGS_save=$CFLAGS
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atomic_compare_exchange_LIBS_save=$LIBS
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# Do we have C11 atomics on 128-bit integers?
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# Use a special macro because we need to check with a few different
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# CFLAGS/LIBS.
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OPAL_ASM_CHECK_ATOMIC_FUNC([atomic_compare_exchange_strong_16],
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[AC_LANG_SOURCE(OPAL_ATOMIC_COMPARE_EXCHANGE_STRONG_TEST_SOURCE)],
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[atomic_compare_exchange_result=1],
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[atomic_compare_exchange_result=0])
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# If we have it and it works, check to make sure it is always lock
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# free.
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AS_IF([test $atomic_compare_exchange_result -eq 1],
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[AC_MSG_CHECKING([if C11 __int128 atomic compare-and-swap is always lock-free])
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AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdatomic.h>], [_Atomic __int128_t x; if (!atomic_is_lock_free(&x)) { return 1; }])],
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[AC_MSG_RESULT([yes])],
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[atomic_compare_exchange_result=0
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# If this test fails, need to reset CFLAGS/LIBS (the
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# above tests atomically set CFLAGS/LIBS or not; this
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# test is running after the fact, so we have to undo
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# the side-effects of setting CFLAGS/LIBS if the above
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# tests passed).
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CFLAGS=$atomic_compare_exchange_CFLAGS_save
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LIBS=$atomic_compare_exchange_LIBS_save
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AC_MSG_RESULT([no])],
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[AC_MSG_RESULT([cannot test -- assume yes (cross compiling)])])
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])
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AC_DEFINE_UNQUOTED([OPAL_HAVE_C11_CSWAP_INT128],
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[$atomic_compare_exchange_result],
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[Whether C11 atomic compare swap is both supported and lock-free on 128-bit values])
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dnl If we could not find decent support for 128-bits atomic let's
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dnl try the GCC _sync
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AS_IF([test $atomic_compare_exchange_result -eq 0],
|
|
[OPAL_CHECK_SYNC_BUILTIN_CSWAP_INT128])
|
|
|
|
OPAL_VAR_SCOPE_POP
|
|
])
|
|
|
|
AC_DEFUN([OPAL_CHECK_GCC_ATOMIC_BUILTINS], [
|
|
AC_MSG_CHECKING([for __atomic builtin atomics])
|
|
|
|
AC_TRY_LINK([
|
|
#include <stdint.h>
|
|
uint32_t tmp, old = 0;
|
|
uint64_t tmp64, old64 = 0;], [
|
|
__atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
__atomic_compare_exchange_n(&tmp, &old, 1, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
|
|
__atomic_add_fetch(&tmp, 1, __ATOMIC_RELAXED);
|
|
__atomic_compare_exchange_n(&tmp64, &old64, 1, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
|
|
__atomic_add_fetch(&tmp64, 1, __ATOMIC_RELAXED);],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
|
|
# Check for 128-bit support
|
|
OPAL_CHECK_GCC_BUILTIN_CSWAP_INT128
|
|
])
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_TEXT
|
|
dnl
|
|
dnl Determine how to set current mode as text.
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_TEXT],[
|
|
AC_MSG_CHECKING([directive for setting text section])
|
|
opal_cv_asm_text=""
|
|
if test "$opal_cv_c_compiler_vendor" = "microsoft" ; then
|
|
# text section will be brought in with the rest of
|
|
# header for MS - leave blank for now
|
|
opal_cv_asm_text=""
|
|
else
|
|
case $host in
|
|
*-aix*)
|
|
opal_cv_asm_text=[".csect .text[PR]"]
|
|
;;
|
|
*)
|
|
opal_cv_asm_text=".text"
|
|
;;
|
|
esac
|
|
fi
|
|
AC_MSG_RESULT([$opal_cv_asm_text])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_TEXT], ["$opal_cv_asm_text"],
|
|
[Assembly directive for setting text section])
|
|
OPAL_ASM_TEXT="$opal_cv_asm_text"
|
|
AC_SUBST(OPAL_ASM_TEXT)
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_GLOBAL
|
|
dnl
|
|
dnl Sets OPAL_ASM_GLOBAL to the value to prefix global values
|
|
dnl
|
|
dnl I'm sure if I don't have a test for this, there will be some
|
|
dnl dumb platform that uses something else
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_GLOBAL],[
|
|
AC_MSG_CHECKING([directive for exporting symbols])
|
|
opal_cv_asm_global=""
|
|
if test "$opal_cv_c_compiler_vendor" = "microsoft" ; then
|
|
opal_cv_asm_global="PUBLIC"
|
|
else
|
|
case $host in
|
|
*)
|
|
opal_cv_asm_global=".globl"
|
|
;;
|
|
esac
|
|
fi
|
|
AC_MSG_RESULT([$opal_cv_asm_global])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_GLOBAL], ["$opal_cv_asm_global"],
|
|
[Assembly directive for exporting symbols])
|
|
OPAL_ASM_GLOBAL="$opal_cv_asm_global"
|
|
AC_SUBST(OPAL_AS_GLOBAL)
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_LSYM
|
|
dnl
|
|
dnl Sets OPAL_ASM_LSYM to the prefix value on a symbol to make it
|
|
dnl an internal label (jump target and whatnot)
|
|
dnl
|
|
dnl We look for L .L $ L$ (in that order) for something that both
|
|
dnl assembles and does not leave a label in the output of nm. Fall
|
|
dnl back to L if nothing else seems to work :/
|
|
dnl
|
|
dnl #################################################################
|
|
|
|
# _OPAL_CHECK_ASM_LSYM([variable-to-set])
|
|
# ---------------------------------------
|
|
AC_DEFUN([_OPAL_CHECK_ASM_LSYM],[
|
|
AC_REQUIRE([AC_PROG_GREP])
|
|
|
|
$1="L"
|
|
|
|
for sym in L .L $ L$ ; do
|
|
asm_result=0
|
|
echo "configure: trying $sym" >&AC_FD_CC
|
|
OPAL_TRY_ASSEMBLE([foobar$opal_cv_asm_label_suffix
|
|
${sym}mytestlabel$opal_cv_asm_label_suffix],
|
|
[# ok, we succeeded at assembling. see if we can nm,
|
|
# throwing the results in a file
|
|
if $NM conftest.$OBJEXT > conftest.out 2>&AC_FD_CC ; then
|
|
if test "`$GREP mytestlabel conftest.out`" = "" ; then
|
|
# there was no symbol... looks promising to me
|
|
$1="$sym"
|
|
asm_result=1
|
|
elif test ["`$GREP ' [Nt] .*mytestlabel' conftest.out`"] = "" ; then
|
|
# see if we have a non-global-ish symbol
|
|
# but we should see if we can do better.
|
|
$1="$sym"
|
|
fi
|
|
else
|
|
# not so much on the NM goodness :/
|
|
echo "$NM failed. Output from NM was:" >&AC_FD_CC
|
|
cat conftest.out >&AC_FD_CC
|
|
AC_MSG_WARN([$NM could not read object file])
|
|
fi
|
|
])
|
|
if test "$asm_result" = "1" ; then
|
|
break
|
|
fi
|
|
done
|
|
rm -f conftest.out
|
|
unset asm_result sym
|
|
])
|
|
|
|
# OPAL_CHECK_ASM_LSYM()
|
|
# ---------------------
|
|
AC_DEFUN([OPAL_CHECK_ASM_LSYM],[
|
|
AC_REQUIRE([AC_PROG_NM])
|
|
|
|
AC_CACHE_CHECK([prefix for lsym labels],
|
|
[opal_cv_asm_lsym],
|
|
[_OPAL_CHECK_ASM_LSYM([opal_cv_asm_lsym])])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_LSYM], ["$opal_cv_asm_lsym"],
|
|
[Assembly prefix for lsym labels])
|
|
OPAL_ASM_LSYM="$opal_cv_asm_lsym"
|
|
AC_SUBST(OPAL_ASM_LSYM)
|
|
])dnl
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_PROC
|
|
dnl
|
|
dnl Sets a cv-flag, if the compiler needs a proc/endp-definition to
|
|
dnl link with C.
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_PROC],[
|
|
AC_CACHE_CHECK([if .proc/endp is needed],
|
|
[opal_cv_asm_need_proc],
|
|
[opal_cv_asm_need_proc="no"
|
|
OPAL_TRY_ASSEMBLE([
|
|
.proc mysym
|
|
mysym:
|
|
.endp mysym],
|
|
[opal_cv_asm_need_proc="yes"])
|
|
rm -f conftest.out])
|
|
|
|
if test "$opal_cv_asm_need_proc" = "yes" ; then
|
|
opal_cv_asm_proc=".proc"
|
|
opal_cv_asm_endproc=".endp"
|
|
else
|
|
opal_cv_asm_proc="#"
|
|
opal_cv_asm_endproc="#"
|
|
fi
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_GSYM
|
|
dnl
|
|
dnl Sets OPAL_ASM_GSYM to the prefix value on a symbol to make it
|
|
dnl a global linkable from C. Basically, an _ or not.
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_GSYM],[
|
|
AC_CACHE_CHECK([prefix for global symbol labels],
|
|
[opal_cv_asm_gsym],
|
|
[_OPAL_CHECK_ASM_GSYM])
|
|
|
|
if test "$opal_cv_asm_gsym" = "none" ; then
|
|
AC_MSG_ERROR([Could not determine global symbol label prefix])
|
|
fi
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_GSYM], ["$opal_cv_asm_gsym"],
|
|
[Assembly prefix for gsym labels])
|
|
OPAL_ASM_GSYM="$opal_cv_asm_gsym"
|
|
AC_SUBST(OPAL_ASM_GSYM)
|
|
|
|
])
|
|
|
|
AC_DEFUN([_OPAL_CHECK_ASM_GSYM],[
|
|
opal_cv_asm_gsym="none"
|
|
|
|
for sym in "_" "" "." ; do
|
|
asm_result=0
|
|
echo "configure: trying $sym" >&AC_FD_CC
|
|
cat > conftest_c.c <<EOF
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void gsym_test_func(void);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
int
|
|
main()
|
|
{
|
|
gsym_test_func();
|
|
return 0;
|
|
}
|
|
EOF
|
|
OPAL_TRY_ASSEMBLE([
|
|
$opal_cv_asm_text
|
|
$opal_cv_asm_proc ${sym}gsym_test_func
|
|
$opal_cv_asm_global ${sym}gsym_test_func
|
|
${sym}gsym_test_func${opal_cv_asm_label_suffix}
|
|
$opal_cv_asm_endproc ${sym}gsym_test_func
|
|
],
|
|
[opal_compile="$CC $CFLAGS -I. conftest_c.c -c > conftest.cmpl 2>&1"
|
|
if AC_TRY_EVAL(opal_compile) ; then
|
|
# save the warnings
|
|
cat conftest.cmpl >&AC_FD_CC
|
|
opal_link="$CC $CFLAGS conftest_c.$OBJEXT conftest.$OBJEXT -o conftest $LDFLAGS $LIBS > conftest.link 2>&1"
|
|
if AC_TRY_EVAL(opal_link) ; then
|
|
# save the warnings
|
|
cat conftest.link >&AC_FD_CC
|
|
asm_result=1
|
|
else
|
|
cat conftest.link >&AC_FD_CC
|
|
echo "configure: failed C program was: " >&AC_FD_CC
|
|
cat conftest_c.c >&AC_FD_CC
|
|
echo "configure: failed ASM program was: " >&AC_FD_CC
|
|
cat conftest.s >&AC_FD_CC
|
|
asm_result=0
|
|
fi
|
|
else
|
|
# save output and failed program
|
|
cat conftest.cmpl >&AC_FD_CC
|
|
echo "configure: failed C program was: " >&AC_FD_CC
|
|
cat conftest.c >&AC_FD_CC
|
|
asm_result=0
|
|
fi],
|
|
[asm_result=0])
|
|
if test "$asm_result" = "1" ; then
|
|
opal_cv_asm_gsym="$sym"
|
|
break
|
|
fi
|
|
done
|
|
rm -rf conftest.*
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_LABEL_SUFFIX
|
|
dnl
|
|
dnl Sets OPAL_ASM_LABEL_SUFFIX to the value to suffix for labels
|
|
dnl
|
|
dnl I'm sure if I don't have a test for this, there will be some
|
|
dnl dumb platform that uses something else
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_LABEL_SUFFIX],[
|
|
AC_MSG_CHECKING([suffix for labels])
|
|
opal_cv_asm_label_suffix=""
|
|
case $host in
|
|
*)
|
|
opal_cv_asm_label_suffix=":"
|
|
;;
|
|
esac
|
|
AC_MSG_RESULT([$opal_cv_asm_label_suffix])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_LABEL_SUFFIX], ["$opal_cv_asm_label_suffix"],
|
|
[Assembly suffix for labels])
|
|
OPAL_ASM_LABEL_SUFFIX="$opal_cv_asm_label_suffix"
|
|
AC_SUBST(OPAL_AS_LABEL_SUFFIX)
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_ALIGN_LOG
|
|
dnl
|
|
dnl Sets OPAL_ASM_ALIGN_LOG to 1 if align is specified
|
|
dnl logarithmically, 0 otherwise
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_ALIGN_LOG],[
|
|
AC_REQUIRE([AC_PROG_NM])
|
|
AC_REQUIRE([AC_PROG_GREP])
|
|
|
|
AC_CACHE_CHECK([if .align directive takes logarithmic value],
|
|
[opal_cv_asm_align_log],
|
|
[ OPAL_TRY_ASSEMBLE([ $opal_cv_asm_text
|
|
.align 4
|
|
$opal_cv_asm_global foo
|
|
.byte 1
|
|
.align 4
|
|
foo$opal_cv_asm_label_suffix
|
|
.byte 2],
|
|
[opal_asm_addr=[`$NM conftest.$OBJEXT | $GREP foo | sed -e 's/.*\([0-9a-fA-F][0-9a-fA-F]\).*foo.*/\1/'`]],
|
|
[opal_asm_addr=""])
|
|
# test for both 16 and 10 (decimal and hex notations)
|
|
echo "configure: .align test address offset is $opal_asm_addr" >&AC_FD_CC
|
|
if test "$opal_asm_addr" = "16" || test "$opal_asm_addr" = "10" ; then
|
|
opal_cv_asm_align_log="yes"
|
|
else
|
|
opal_cv_asm_align_log="no"
|
|
fi])
|
|
|
|
if test "$opal_cv_asm_align_log" = "yes" || test "$opal_cv_asm_align_log" = "1" ; then
|
|
opal_asm_align_log_result=1
|
|
else
|
|
opal_asm_align_log_result=0
|
|
fi
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_ALIGN_LOG],
|
|
[$asm_align_log_result],
|
|
[Assembly align directive expects logarithmic value])
|
|
|
|
unset omp_asm_addr asm_result
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_TYPE
|
|
dnl
|
|
dnl Sets OPAL_ASM_TYPE to the prefix for the function type to
|
|
dnl set a symbol's type as function (needed on ELF for shared
|
|
dnl libraries). If no .type directive is needed, sets OPAL_ASM_TYPE
|
|
dnl to an empty string
|
|
dnl
|
|
dnl We look for @ \# %
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_TYPE],[
|
|
AC_CACHE_CHECK([prefix for function in .type],
|
|
[opal_cv_asm_type],
|
|
[_OPAL_CHECK_ASM_TYPE])
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_TYPE], ["$opal_cv_asm_type"],
|
|
[How to set function type in .type directive])
|
|
OPAL_ASM_TYPE="$opal_cv_asm_type"
|
|
AC_SUBST(OPAL_ASM_TYPE)
|
|
])
|
|
|
|
AC_DEFUN([_OPAL_CHECK_ASM_TYPE],[
|
|
opal_cv_asm_type=""
|
|
|
|
case "${host}" in
|
|
*-sun-solaris*)
|
|
# GCC on solaris seems to accept just about anything, not
|
|
# that what it defines actually works... So just hardwire
|
|
# to the right answer
|
|
opal_cv_asm_type="#"
|
|
;;
|
|
*)
|
|
for type in @ \# % ; do
|
|
asm_result=0
|
|
echo "configure: trying $type" >&AC_FD_CC
|
|
OPAL_TRY_ASSEMBLE([ .type mysym, ${type}function
|
|
mysym:],
|
|
[opal_cv_asm_type="${type}"
|
|
asm_result=1])
|
|
if test "$asm_result" = "1" ; then
|
|
break
|
|
fi
|
|
done
|
|
;;
|
|
esac
|
|
rm -f conftest.out
|
|
|
|
unset asm_result type
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_ASM_SIZE
|
|
dnl
|
|
dnl Sets OPAL_ASM_SIZE to 1 if we should set .size directives for
|
|
dnl each function, 0 otherwise.
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_ASM_SIZE],[
|
|
AC_CACHE_CHECK([if .size is needed],
|
|
[opal_cv_asm_need_size],
|
|
[opal_cv_asm_need_size="no"
|
|
OPAL_TRY_ASSEMBLE([ .size mysym, 1],
|
|
[opal_cv_asm_need_size="yes"])
|
|
rm -f conftest.out])
|
|
|
|
if test "$opal_cv_asm_need_size" = "yes" ; then
|
|
opal_asm_size=1
|
|
else
|
|
opal_asm_size=0
|
|
fi
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_SIZE], ["$opal_asm_size"],
|
|
[Do we need to give a .size directive])
|
|
OPAL_ASM_SIZE="$opal_asm_size"
|
|
AC_SUBST(OPAL_ASM_TYPE)
|
|
unset asm_result
|
|
])dnl
|
|
|
|
|
|
# OPAL_CHECK_ASM_GNU_STACKEXEC(var)
|
|
# ----------------------------------
|
|
# sets shell variable var to the things necessary to
|
|
# disable execable stacks with GAS
|
|
AC_DEFUN([OPAL_CHECK_ASM_GNU_STACKEXEC], [
|
|
AC_REQUIRE([AC_PROG_GREP])
|
|
|
|
AC_CHECK_PROG([OBJDUMP], [objdump], [objdump])
|
|
AC_CACHE_CHECK([if .note.GNU-stack is needed],
|
|
[opal_cv_asm_gnu_stack_result],
|
|
[AS_IF([test "$OBJDUMP" != ""],
|
|
[ # first, see if a simple C program has it set
|
|
cat >conftest.c <<EOF
|
|
int testfunc() {return 0; }
|
|
EOF
|
|
OPAL_LOG_COMMAND([$CC $CFLAGS -c conftest.c -o conftest.$OBJEXT],
|
|
[$OBJDUMP -x conftest.$OBJEXT | $GREP '\.note\.GNU-stack' > /dev/null && opal_cv_asm_gnu_stack_result=yes],
|
|
[OPAL_LOG_MSG([the failed program was:], 1)
|
|
OPAL_LOG_FILE([conftest.c])
|
|
opal_cv_asm_gnu_stack_result=no])
|
|
if test "$opal_cv_asm_gnu_stack_result" != "yes" ; then
|
|
opal_cv_asm_gnu_stack_result="no"
|
|
fi
|
|
rm -rf conftest.*],
|
|
[opal_cv_asm_gnu_stack_result="no"])])
|
|
if test "$opal_cv_asm_gnu_stack_result" = "yes" ; then
|
|
opal_cv_asm_gnu_stack=1
|
|
else
|
|
opal_cv_asm_gnu_stack=0
|
|
fi
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_POWERPC_REG
|
|
dnl
|
|
dnl See if the notation for specifying registers is X (most everyone)
|
|
dnl or rX (OS X)
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_POWERPC_REG],[
|
|
AC_MSG_CHECKING([if PowerPC registers have r prefix])
|
|
OPAL_TRY_ASSEMBLE([$opal_cv_asm_text
|
|
addi 1,1,0],
|
|
[opal_cv_asm_powerpc_r_reg=0],
|
|
[OPAL_TRY_ASSEMBLE([$opal_cv_asm_text
|
|
addi r1,r1,0],
|
|
[opal_cv_asm_powerpc_r_reg=1],
|
|
[AC_MSG_ERROR([Can not determine how to use PPC registers])])])
|
|
if test "$opal_cv_asm_powerpc_r_reg" = "1" ; then
|
|
AC_MSG_RESULT([yes])
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
fi
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_POWERPC_R_REGISTERS],
|
|
[$opal_cv_asm_powerpc_r_reg],
|
|
[Whether r notation is used for ppc registers])
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_POWERPC_64BIT
|
|
dnl
|
|
dnl On some powerpc chips (the PPC970 or G5), the OS usually runs in
|
|
dnl 32 bit mode, even though the hardware can do 64bit things. If
|
|
dnl the compiler will let us, emit code for 64bit test and set type
|
|
dnl operations (on a long long).
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_POWERPC_64BIT],[
|
|
if test "$ac_cv_sizeof_long" != "4" ; then
|
|
# this function should only be called in the 32 bit case
|
|
AC_MSG_ERROR([CHECK_POWERPC_64BIT called on 64 bit platform. Internal error.])
|
|
fi
|
|
AC_MSG_CHECKING([for 64-bit PowerPC assembly support])
|
|
case $host in
|
|
*-darwin*)
|
|
ppc64_result=0
|
|
if test "$opal_cv_asm_powerpc_r_reg" = "1" ; then
|
|
ldarx_asm=" ldarx r1,r1,r1";
|
|
else
|
|
ldarx_asm=" ldarx 1,1,1";
|
|
fi
|
|
OPAL_TRY_ASSEMBLE([$opal_cv_asm_text
|
|
$ldarx_asm],
|
|
[ppc64_result=1],
|
|
[ppc64_result=0])
|
|
;;
|
|
*)
|
|
ppc64_result=0
|
|
;;
|
|
esac
|
|
|
|
if test "$ppc64_result" = "1" ; then
|
|
AC_MSG_RESULT([yes])
|
|
ifelse([$1],,:,[$1])
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
ifelse([$2],,:,[$2])
|
|
fi
|
|
|
|
unset ppc64_result ldarx_asm
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_SPARCV8PLUS
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_SPARCV8PLUS],[
|
|
AC_MSG_CHECKING([if have Sparc v8+/v9 support])
|
|
sparc_result=0
|
|
OPAL_TRY_ASSEMBLE([$opal_cv_asm_text
|
|
casa [%o0] 0x80, %o1, %o2],
|
|
[sparc_result=1],
|
|
[sparc_result=0])
|
|
if test "$sparc_result" = "1" ; then
|
|
AC_MSG_RESULT([yes])
|
|
ifelse([$1],,:,[$1])
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
ifelse([$2],,:,[$2])
|
|
fi
|
|
|
|
unset sparc_result
|
|
])dnl
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_CMPXCHG16B
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CMPXCHG16B_TEST_SOURCE],[[
|
|
#include <stdint.h>
|
|
#include <assert.h>
|
|
|
|
union opal_counted_pointer_t {
|
|
struct {
|
|
uint64_t counter;
|
|
uint64_t item;
|
|
} data;
|
|
#if defined(HAVE___INT128) && HAVE___INT128
|
|
__int128 value;
|
|
#elif defined(HAVE_INT128_T) && HAVE_INT128_T
|
|
int128_t value;
|
|
#endif
|
|
};
|
|
typedef union opal_counted_pointer_t opal_counted_pointer_t;
|
|
|
|
int main(int argc, char* argv) {
|
|
volatile opal_counted_pointer_t a;
|
|
opal_counted_pointer_t b;
|
|
|
|
a.data.counter = 0;
|
|
a.data.item = 0x1234567890ABCDEF;
|
|
|
|
b.data.counter = a.data.counter;
|
|
b.data.item = a.data.item;
|
|
|
|
/* bozo checks */
|
|
assert(16 == sizeof(opal_counted_pointer_t));
|
|
assert(a.data.counter == b.data.counter);
|
|
assert(a.data.item == b.data.item);
|
|
/*
|
|
* the following test fails on buggy compilers
|
|
* so far, with icc -o conftest conftest.c
|
|
* - intel icc 14.0.0.080 (aka 2013sp1)
|
|
* - intel icc 14.0.1.106 (aka 2013sp1u1)
|
|
* older and more recents compilers work fine
|
|
* buggy compilers work also fine but only with -O0
|
|
*/
|
|
#if (defined(HAVE___INT128) && HAVE___INT128) || (defined(HAVE_INT128_T) && HAVE_INT128_T)
|
|
return (a.value != b.value);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
]])
|
|
|
|
AC_DEFUN([OPAL_CHECK_CMPXCHG16B],[
|
|
OPAL_VAR_SCOPE_PUSH([cmpxchg16b_result])
|
|
|
|
OPAL_ASM_CHECK_ATOMIC_FUNC([cmpxchg16b],
|
|
[AC_LANG_PROGRAM([[unsigned char tmp[16];]],
|
|
[[__asm__ __volatile__ ("lock cmpxchg16b (%%rsi)" : : "S" (tmp) : "memory", "cc");]])],
|
|
[cmpxchg16b_result=1],
|
|
[cmpxchg16b_result=0])
|
|
# If we have it, make sure it works.
|
|
AS_IF([test $cmpxchg16b_result -eq 1],
|
|
[AC_MSG_CHECKING([if cmpxchg16b_result works])
|
|
AC_RUN_IFELSE([AC_LANG_SOURCE(OPAL_CMPXCHG16B_TEST_SOURCE)],
|
|
[AC_MSG_RESULT([yes])],
|
|
[cmpxchg16b_result=0
|
|
AC_MSG_RESULT([no])],
|
|
[AC_MSG_RESULT([cannot test -- assume yes (cross compiling)])])
|
|
])
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_HAVE_CMPXCHG16B], [$cmpxchg16b_result],
|
|
[Whether the processor supports the cmpxchg16b instruction])
|
|
OPAL_VAR_SCOPE_POP
|
|
])dnl
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CHECK_INLINE_GCC
|
|
dnl
|
|
dnl Check if the compiler is capable of doing GCC-style inline
|
|
dnl assembly. Some compilers emit a warning and ignore the inline
|
|
dnl assembly (xlc on OS X) and compile without error. Therefore,
|
|
dnl the test attempts to run the emitted code to check that the
|
|
dnl assembly is actually run. To run this test, one argument to
|
|
dnl the macro must be an assembly instruction in gcc format to move
|
|
dnl the value 0 into the register containing the variable ret.
|
|
dnl For PowerPC, this would be:
|
|
dnl
|
|
dnl "li %0,0" : "=&r"(ret)
|
|
dnl
|
|
dnl For testing ia32 assembly, the assembly instruction xaddl is
|
|
dnl tested. The xaddl instruction is used by some of the atomic
|
|
dnl implementations so it makes sense to test for it. In addition,
|
|
dnl some compilers (i.e. earlier versions of Sun Studio 12) do not
|
|
dnl necessarily handle xaddl properly, so that needs to be detected
|
|
dnl during configure time.
|
|
dnl
|
|
dnl DEFINE OPAL_GCC_INLINE_ASSEMBLY to 0 or 1 depending on GCC
|
|
dnl support
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CHECK_INLINE_C_GCC],[
|
|
assembly="$1"
|
|
asm_result="unknown"
|
|
|
|
AC_MSG_CHECKING([if $CC supports GCC inline assembly])
|
|
|
|
if test ! "$assembly" = "" ; then
|
|
AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[[
|
|
int ret = 1;
|
|
int negone = -1;
|
|
__asm__ __volatile__ ($assembly);
|
|
return ret;
|
|
]])],
|
|
[asm_result="yes"], [asm_result="no"],
|
|
[asm_result="unknown"])
|
|
else
|
|
assembly="test skipped - assuming no"
|
|
fi
|
|
|
|
# if we're cross compiling, just try to compile and figure good enough
|
|
if test "$asm_result" = "unknown" ; then
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[[
|
|
int ret = 1;
|
|
int negone = -1;
|
|
__asm__ __volatile__ ($assembly);
|
|
return ret;
|
|
]])],
|
|
[asm_result="yes"], [asm_result="no"])
|
|
fi
|
|
|
|
AC_MSG_RESULT([$asm_result])
|
|
|
|
if test "$asm_result" = "yes" ; then
|
|
OPAL_C_GCC_INLINE_ASSEMBLY=1
|
|
opal_cv_asm_inline_supported="yes"
|
|
else
|
|
OPAL_C_GCC_INLINE_ASSEMBLY=0
|
|
fi
|
|
|
|
AC_DEFINE_UNQUOTED([OPAL_C_GCC_INLINE_ASSEMBLY],
|
|
[$OPAL_C_GCC_INLINE_ASSEMBLY],
|
|
[Whether C compiler supports GCC style inline assembly])
|
|
|
|
unset OPAL_C_GCC_INLINE_ASSEMBLY assembly asm_result
|
|
])dnl
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_CONFIG_ASM
|
|
dnl
|
|
dnl DEFINE OPAL_ASSEMBLY_ARCH to something in sys/architecture.h
|
|
dnl DEFINE OPAL_ASSEMBLY_FORMAT to string containing correct
|
|
dnl format for assembly (not user friendly)
|
|
dnl SUBST OPAL_ASSEMBLY_FORMAT to string containing correct
|
|
dnl format for assembly (not user friendly)
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_CONFIG_ASM],[
|
|
AC_REQUIRE([OPAL_SETUP_CC])
|
|
AC_REQUIRE([AM_PROG_AS])
|
|
|
|
AC_ARG_ENABLE([c11-atomics],[AC_HELP_STRING([--enable-c11-atomics],
|
|
[Enable use of C11 atomics if available (default: enabled)])])
|
|
|
|
AC_ARG_ENABLE([builtin-atomics],
|
|
[AC_HELP_STRING([--enable-builtin-atomics],
|
|
[Enable use of __sync builtin atomics (default: disabled)])])
|
|
|
|
OPAL_CHECK_C11_CSWAP_INT128
|
|
|
|
if test "x$enable_c11_atomics" != "xno" && test "$opal_cv_c11_supported" = "yes" ; then
|
|
opal_cv_asm_builtin="BUILTIN_C11"
|
|
OPAL_CHECK_C11_CSWAP_INT128
|
|
elif test "x$enable_c11_atomics" = "xyes"; then
|
|
AC_MSG_WARN([C11 atomics were requested but are not supported])
|
|
AC_MSG_ERROR([Cannot continue])
|
|
else
|
|
opal_cv_asm_builtin="BUILTIN_NO"
|
|
AS_IF([test "$opal_cv_asm_builtin" = "BUILTIN_NO" && test "$enable_builtin_atomics" = "yes"],
|
|
[OPAL_CHECK_GCC_ATOMIC_BUILTINS([opal_cv_asm_builtin="BUILTIN_GCC"], [])])
|
|
AS_IF([test "$opal_cv_asm_builtin" = "BUILTIN_NO" && test "$enable_builtin_atomics" = "yes"],
|
|
[OPAL_CHECK_SYNC_BUILTINS([opal_cv_asm_builtin="BUILTIN_SYNC"], [])])
|
|
AS_IF([test "$opal_cv_asm_builtin" = "BUILTIN_NO" && test "$enable_builtin_atomics" = "yes"],
|
|
[AC_MSG_ERROR([__sync builtin atomics requested but not found.])])
|
|
fi
|
|
|
|
OPAL_CHECK_ASM_PROC
|
|
OPAL_CHECK_ASM_TEXT
|
|
OPAL_CHECK_ASM_GLOBAL
|
|
OPAL_CHECK_ASM_GNU_STACKEXEC
|
|
OPAL_CHECK_ASM_LABEL_SUFFIX
|
|
OPAL_CHECK_ASM_GSYM
|
|
OPAL_CHECK_ASM_LSYM
|
|
OPAL_CHECK_ASM_TYPE
|
|
OPAL_CHECK_ASM_SIZE
|
|
OPAL_CHECK_ASM_ALIGN_LOG
|
|
|
|
# find our architecture for purposes of assembly stuff
|
|
opal_cv_asm_arch="UNSUPPORTED"
|
|
OPAL_GCC_INLINE_ASSIGN=""
|
|
OPAL_ASM_SUPPORT_64BIT=0
|
|
case "${host}" in
|
|
x86_64-*x32)
|
|
opal_cv_asm_arch="X86_64"
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
OPAL_GCC_INLINE_ASSIGN='"xaddl %1,%0" : "=m"(ret), "+r"(negone) : "m"(ret)'
|
|
;;
|
|
i?86-*|x86_64*|amd64*)
|
|
if test "$ac_cv_sizeof_long" = "4" ; then
|
|
opal_cv_asm_arch="IA32"
|
|
else
|
|
opal_cv_asm_arch="X86_64"
|
|
fi
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
OPAL_GCC_INLINE_ASSIGN='"xaddl %1,%0" : "=m"(ret), "+r"(negone) : "m"(ret)'
|
|
OPAL_CHECK_CMPXCHG16B
|
|
;;
|
|
|
|
aarch64*)
|
|
opal_cv_asm_arch="ARM64"
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
OPAL_ASM_ARM_VERSION=8
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_ARM_VERSION], [$OPAL_ASM_ARM_VERSION],
|
|
[What ARM assembly version to use])
|
|
OPAL_GCC_INLINE_ASSIGN='"mov %0, #0" : "=&r"(ret)'
|
|
;;
|
|
|
|
armv7*|arm-*-linux-gnueabihf)
|
|
opal_cv_asm_arch="ARM"
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
OPAL_ASM_ARM_VERSION=7
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_ARM_VERSION], [$OPAL_ASM_ARM_VERSION],
|
|
[What ARM assembly version to use])
|
|
OPAL_GCC_INLINE_ASSIGN='"mov %0, #0" : "=&r"(ret)'
|
|
;;
|
|
|
|
armv6*)
|
|
opal_cv_asm_arch="ARM"
|
|
OPAL_ASM_SUPPORT_64BIT=0
|
|
OPAL_ASM_ARM_VERSION=6
|
|
CCASFLAGS="$CCASFLAGS -march=armv7-a"
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_ARM_VERSION], [$OPAL_ASM_ARM_VERSION],
|
|
[What ARM assembly version to use])
|
|
OPAL_GCC_INLINE_ASSIGN='"mov %0, #0" : "=&r"(ret)'
|
|
;;
|
|
|
|
armv5*linux*|armv4*linux*|arm-*-linux-gnueabi)
|
|
# uses Linux kernel helpers for some atomic operations
|
|
opal_cv_asm_arch="ARM"
|
|
OPAL_CHECK_SYNC_BUILTINS([opal_cv_asm_builtin="BUILTIN_SYNC"],
|
|
[AC_MSG_ERROR([No atomic primitives available for $host])])
|
|
;;
|
|
|
|
powerpc-*|powerpc64-*|powerpcle-*|powerpc64le-*|rs6000-*|ppc-*)
|
|
OPAL_CHECK_POWERPC_REG
|
|
if test "$ac_cv_sizeof_long" = "4" ; then
|
|
opal_cv_asm_arch="POWERPC32"
|
|
|
|
# Note that on some platforms (Apple G5), even if we are
|
|
# compiling in 32 bit mode (and therefore should assume
|
|
# sizeof(long) == 4), we can use the 64 bit test and set
|
|
# operations.
|
|
OPAL_CHECK_POWERPC_64BIT(OPAL_ASM_SUPPORT_64BIT=1)
|
|
elif test "$ac_cv_sizeof_long" = "8" ; then
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
opal_cv_asm_arch="POWERPC64"
|
|
else
|
|
AC_MSG_ERROR([Could not determine PowerPC word size: $ac_cv_sizeof_long])
|
|
fi
|
|
OPAL_GCC_INLINE_ASSIGN='"1: li %0,0" : "=&r"(ret)'
|
|
;;
|
|
sparc*-*)
|
|
# SPARC v9 (and above) are the only ones with 64bit support
|
|
# if compiling 32 bit, see if we are v9 (aka v8plus) or
|
|
# earlier (casa is v8+/v9).
|
|
if test "$ac_cv_sizeof_long" = "4" ; then
|
|
have_v8plus=0
|
|
OPAL_CHECK_SPARCV8PLUS([have_v8plus=1])
|
|
if test "$have_v8plus" = "0" ; then
|
|
OPAL_ASM_SUPPORT_64BIT=0
|
|
opal_cv_asm_arch="SPARC"
|
|
AC_MSG_WARN([Sparc v8 target is not supported in this release of Open MPI.])
|
|
AC_MSG_WARN([You must specify the target architecture v8plus to compile])
|
|
AC_MSG_WARN([Open MPI in 32 bit mode on Sparc processors (see the README).])
|
|
AC_MSG_ERROR([Can not continue.])
|
|
else
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
opal_cv_asm_arch="SPARCV9_32"
|
|
fi
|
|
|
|
elif test "$ac_cv_sizeof_long" = "8" ; then
|
|
OPAL_ASM_SUPPORT_64BIT=1
|
|
opal_cv_asm_arch="SPARCV9_64"
|
|
else
|
|
AC_MSG_ERROR([Could not determine Sparc word size: $ac_cv_sizeof_long])
|
|
fi
|
|
OPAL_GCC_INLINE_ASSIGN='"mov 0,%0" : "=&r"(ret)'
|
|
;;
|
|
|
|
*)
|
|
OPAL_CHECK_SYNC_BUILTINS([opal_cv_asm_builtin="BUILTIN_SYNC"],
|
|
[AC_MSG_ERROR([No atomic primitives available for $host])])
|
|
;;
|
|
esac
|
|
|
|
if test "x$OPAL_ASM_SUPPORT_64BIT" = "x1" && test "$opal_cv_asm_builtin" = "BUILTIN_SYNC" &&
|
|
test "$opal_asm_sync_have_64bit" = "0" ; then
|
|
# __sync builtins exist but do not implement 64-bit support. Fall back on inline asm.
|
|
opal_cv_asm_builtin="BUILTIN_NO"
|
|
fi
|
|
|
|
if test "$opal_cv_asm_builtin" = "BUILTIN_SYNC" || test "$opal_cv_asm_builtin" = "BUILTIN_GCC" ; then
|
|
AC_DEFINE([OPAL_C_GCC_INLINE_ASSEMBLY], [1],
|
|
[Whether C compiler supports GCC style inline assembly])
|
|
else
|
|
AC_DEFINE_UNQUOTED([OPAL_ASM_SUPPORT_64BIT],
|
|
[$OPAL_ASM_SUPPORT_64BIT],
|
|
[Whether we can do 64bit assembly operations or not. Should not be used outside of the assembly header files])
|
|
AC_SUBST([OPAL_ASM_SUPPORT_64BIT])
|
|
|
|
#
|
|
# figure out if we need any special function start / stop code
|
|
#
|
|
case $host_os in
|
|
aix*)
|
|
opal_asm_arch_config="aix"
|
|
;;
|
|
*)
|
|
opal_asm_arch_config="default"
|
|
;;
|
|
esac
|
|
|
|
opal_cv_asm_inline_supported="no"
|
|
# now that we know our architecture, try to inline assemble
|
|
OPAL_CHECK_INLINE_C_GCC([$OPAL_GCC_INLINE_ASSIGN])
|
|
|
|
# format:
|
|
# config_file-text-global-label_suffix-gsym-lsym-type-size-align_log-ppc_r_reg-64_bit-gnu_stack
|
|
asm_format="${opal_asm_arch_config}"
|
|
asm_format="${asm_format}-${opal_cv_asm_text}-${opal_cv_asm_global}"
|
|
asm_format="${asm_format}-${opal_cv_asm_label_suffix}-${opal_cv_asm_gsym}"
|
|
asm_format="${asm_format}-${opal_cv_asm_lsym}"
|
|
asm_format="${asm_format}-${opal_cv_asm_type}-${opal_asm_size}"
|
|
asm_format="${asm_format}-${opal_asm_align_log_result}"
|
|
if test "$opal_cv_asm_arch" = "POWERPC32" || test "$opal_cv_asm_arch" = "POWERPC64" ; then
|
|
asm_format="${asm_format}-${opal_cv_asm_powerpc_r_reg}"
|
|
else
|
|
asm_format="${asm_format}-1"
|
|
fi
|
|
asm_format="${asm_format}-${OPAL_ASM_SUPPORT_64BIT}"
|
|
opal_cv_asm_format="${asm_format}-${opal_cv_asm_gnu_stack}"
|
|
# For the Makefile, need to escape the $ as $$. Don't display
|
|
# this version, but make sure the Makefile gives the right thing
|
|
# when regenerating the files because the base has been touched.
|
|
OPAL_ASSEMBLY_FORMAT=`echo "$opal_cv_asm_format" | sed -e 's/\\\$/\\\$\\\$/'`
|
|
|
|
AC_MSG_CHECKING([for assembly format])
|
|
AC_MSG_RESULT([$opal_cv_asm_format])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASSEMBLY_FORMAT], ["$OPAL_ASSEMBLY_FORMAT"],
|
|
[Format of assembly file])
|
|
AC_SUBST([OPAL_ASSEMBLY_FORMAT])
|
|
fi # if opal_cv_asm_builtin = BUILTIN_SYNC
|
|
|
|
result="OPAL_$opal_cv_asm_arch"
|
|
OPAL_ASSEMBLY_ARCH="$opal_cv_asm_arch"
|
|
AC_MSG_CHECKING([for assembly architecture])
|
|
AC_MSG_RESULT([$opal_cv_asm_arch])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASSEMBLY_ARCH], [$result],
|
|
[Architecture type of assembly to use for atomic operations and CMA])
|
|
AC_SUBST([OPAL_ASSEMBLY_ARCH])
|
|
|
|
# Check for RDTSCP support
|
|
result=0
|
|
AS_IF([test "$opal_cv_asm_arch" = "OPAL_X86_64" || test "$opal_cv_asm_arch" = "OPAL_IA32"],
|
|
[AC_MSG_CHECKING([for RDTSCP assembly support])
|
|
AC_LANG_PUSH([C])
|
|
AC_TRY_RUN([[
|
|
int main(int argc, char* argv[])
|
|
{
|
|
unsigned int rax, rdx;
|
|
__asm__ __volatile__ ("rdtscp\n": "=a" (rax), "=d" (rdx):: "%rax", "%rdx");
|
|
return 0;
|
|
}
|
|
]],
|
|
[result=1
|
|
AC_MSG_RESULT([yes])],
|
|
[AC_MSG_RESULT([no])],
|
|
[#cross compile not supported
|
|
AC_MSG_RESULT(["no (cross compiling)"])])
|
|
AC_LANG_POP([C])])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASSEMBLY_SUPPORTS_RDTSCP], [$result],
|
|
[Whether we have support for RDTSCP instruction])
|
|
|
|
result="OPAL_$opal_cv_asm_builtin"
|
|
OPAL_ASSEMBLY_BUILTIN="$opal_cv_asm_builtin"
|
|
AC_MSG_CHECKING([for builtin atomics])
|
|
AC_MSG_RESULT([$opal_cv_asm_builtin])
|
|
AC_DEFINE_UNQUOTED([OPAL_ASSEMBLY_BUILTIN], [$result],
|
|
[Whether to use builtin atomics])
|
|
AC_SUBST([OPAL_ASSEMBLY_BUILTIN])
|
|
|
|
OPAL_ASM_FIND_FILE
|
|
|
|
unset result asm_format
|
|
])dnl
|
|
|
|
|
|
dnl #################################################################
|
|
dnl
|
|
dnl OPAL_ASM_FIND_FILE
|
|
dnl
|
|
dnl
|
|
dnl do all the evil mojo to provide a working assembly file
|
|
dnl
|
|
dnl #################################################################
|
|
AC_DEFUN([OPAL_ASM_FIND_FILE], [
|
|
AC_REQUIRE([AC_PROG_GREP])
|
|
AC_REQUIRE([AC_PROG_FGREP])
|
|
|
|
if test "$opal_cv_asm_arch" != "WINDOWS" && test "$opal_cv_asm_builtin" != "BUILTIN_SYNC" && test "$opal_cv_asm_builtin" != "BUILTIN_GCC" && test "$opal_cv_asm_builtin" != "BUILTIN_OSX" && test "$opal_cv_asm_inline_arch" = "no" ; then
|
|
AC_MSG_ERROR([no atomic support available. exiting])
|
|
else
|
|
# On windows with VC++, atomics are done with compiler primitives
|
|
opal_cv_asm_file=""
|
|
fi
|
|
])dnl
|