[binutils-gdb] Target FP: Make use of MPFR if available

[binutils-gdb] Target FP: Make use of MPFR if available

[sergiodj+buildbot]

*** TEST RESULTS FOR COMMIT 2400729ecfd2c7be8b18aeaa822fef5a4b503f8a ***

Author: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Branch: master
Commit: 2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Target FP: Make use of MPFR if available

This second patch introduces mfpr_float_ops, an new implementation
of target_float_ops.  This implements precise emulation of target
floating-point formats using the MPFR library.  This is then used
to perform operations on types that do not match any host type.

Note that use of MPFR is still not required.  The patch adds
a configure option --with-mpfr similar to --with-expat.  If use of
MPFR is disabled via the option or MPFR is not available, code will
fall back to current behavior.  This means that operations on types
that do not match any host type will be implemented on the host
long double type instead.

A new test case verifies that we can correctly print the largest
__float128 value now.

gdb/ChangeLog:
2017-11-22  Ulrich Weigand  <uweigand@de.ibm.com>

	* NEWS: Document use of GNU MPFR.
	* README: Likewise.

	* Makefile.in (LIBMPFR): Add define.
	(CLIBS): Add $(LIBMPFR).
	* configure.ac: Add --with-mpfr configure option.
	* configure: Regenerate.
	* config.in: Regenerate.

	* target-float.c [HAVE_LIBMPFR]: Include <mpfr.h>.
	(class mpfr_float_ops): New type.
	(mpfr_float_ops::from_target): Two new overloaded functions.
	(mpfr_float_ops::to_target): Likewise.
	(mpfr_float_ops::to_string): New function.
	(mpfr_float_ops::from_string): Likewise.
	(mpfr_float_ops::to_longest): Likewise.
	(mpfr_float_ops::from_longest): Likewise.
	(mpfr_float_ops::from_ulongest): Likewise.
	(mpfr_float_ops::to_host_double): Likewise.
	(mpfr_float_ops::from_host_double): Likewise.
	(mpfr_float_ops::convert): Likewise.
	(mpfr_float_ops::binop): Likewise.
	(mpfr_float_ops::compare): Likewise.
	(get_target_float_ops): Use mpfr_float_ops if available.

gdb/doc/ChangeLog:
2017-11-22  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdb.texinfo (Requirements): Document use of GNU MPFR.

gdb/testsuite/ChangeLog:
2017-11-22  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdb.base/float128.c (large128): New variable.
	* gdb.base/float128.exp: Add test to print largest __float128 value.

Failures on Fedora-s390x-m64, branch master

[sergiodj+buildbot]

Buildslave:
	marist-fedora-s390x

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-s390x-m64/builds/7063>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-s390x-m64/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-s390x-m64/xfails/master/xfail;hb=5cc2d8c>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-s390x-m64/xfails/master/xfail.table;hb=5cc2d8c>

Failures on Fedora-x86_64-native-gdbserver-m32, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-3

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-native-gdbserver-m32/builds/8045>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-native-gdbserver-m32/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-gdbserver-m32/xfails/master/xfail;hb=18b3ca2>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-gdbserver-m32/xfails/master/xfail.table;hb=18b3ca2>

Failures on Fedora-x86_64-m32, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-3

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m32/builds/8060>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-m32/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: inferior 1 exited
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=1: inferior 1 exited
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=0: inferior 1 exited
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m32/xfails/master/xfail;hb=47d5b32>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m32/xfails/master/xfail.table;hb=47d5b32>

Failures on Fedora-x86_64-native-extended-gdbserver-m32, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-2

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-native-extended-gdbserver-m32/builds/8049>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-native-extended-gdbserver-m32/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: inferior 1 exited
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=1: inferior 1 exited
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-extended-gdbserver-m32/xfails/master/xfail;hb=aa4d0c3>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-extended-gdbserver-m32/xfails/master/xfail.table;hb=aa4d0c3>

Failures on Fedora-x86_64-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m64/builds/8101>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-m64/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: inferior 1 exited
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=1: inferior 1 exited
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m64/xfails/master/xfail;hb=f7c5eef>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m64/xfails/master/xfail.table;hb=f7c5eef>

Failures on Fedora-x86_64-cc-with-index, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-3

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-cc-with-index/builds/8002>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-cc-with-index/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: inferior 1 exited
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-cc-with-index/xfails/master/xfail;hb=deb0d03>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-cc-with-index/xfails/master/xfail.table;hb=deb0d03>

Failures on Fedora-x86_64-native-extended-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-2

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-native-extended-gdbserver-m64/builds/8087>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-native-extended-gdbserver-m64/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-extended-gdbserver-m64/xfails/master/xfail;hb=988e415>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-extended-gdbserver-m64/xfails/master/xfail.table;hb=988e415>

Failures on Fedora-x86_64-native-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-native-gdbserver-m64/builds/8042>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-native-gdbserver-m64/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-gdbserver-m64/xfails/master/xfail;hb=80312fe>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-native-gdbserver-m64/xfails/master/xfail.table;hb=80312fe>

Failures on Fedora-i686, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-4

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-i686/builds/8083>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-i686/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
new FAIL: gdb.base/float128.exp: print large128
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-i686/xfails/master/xfail;hb=4a17cb2>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-i686/xfails/master/xfail.table;hb=4a17cb2>

Failures on Ubuntu-AArch64-m64, branch master

[sergiodj+buildbot]

Buildslave:
	ubuntu-aarch64-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Ubuntu-AArch64-m64/builds/3573>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Ubuntu-AArch64-m64/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Ubuntu-AArch64-m64/xfails/master/xfail;hb=2289e31>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Ubuntu-AArch64-m64/xfails/master/xfail.table;hb=2289e31>

Failures on Ubuntu-AArch32-native-extended-gdbserver-m32, branch master

[sergiodj+buildbot]

Buildslave:
	ubuntu-trusty-aarch32-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Ubuntu-AArch32-native-extended-gdbserver-m32/builds/2166>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Ubuntu-AArch32-native-extended-gdbserver-m32/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.mi/mi-var-rtti.exp: run to mi-var-rtti.cc:306
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=7: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=11: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=19: wait for stops
============================


*** Complete list of XFAILs for this builder ***

FAILURE TO OBTAIN THE COMMIT FOR THE XFAIL LIST.  PLEASE CONTACT THE BUILDBOT ADMIN.

Failures on Ubuntu-AArch32-native-gdbserver-m32, branch master

[sergiodj+buildbot]

Buildslave:
	ubuntu-trusty-aarch32-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Ubuntu-AArch32-native-gdbserver-m32/builds/2148>

Commit(s) tested:
	2400729ecfd2c7be8b18aeaa822fef5a4b503f8a

Author(s) (in the same order as the commits):
	Ulrich Weigand <ulrich.weigand@de.ibm.com>

Subject:
	Target FP: Make use of MPFR if available

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Ubuntu-AArch32-native-gdbserver-m32/24/2400729ecfd2c7be8b18aeaa822fef5a4b503f8a/>

*** Diff to previous build ***
============================
PASS -> KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Ubuntu-AArch32-native-gdbserver-m32/xfails/master/xfail;hb=>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Ubuntu-AArch32-native-gdbserver-m32/xfails/master/xfail.table;hb=>