From a54561be5588ac9b16d3c20760b9b554168bb8aa Mon Sep 17 00:00:00 2001
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From: Peter Seiderer <pseiderer@users.noreply.github.com>
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Date: Thu, 31 Oct 2019 21:26:27 +0100
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Subject: [PATCH] Pseiderer/add nios2 and xtensa 001 (#119)
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* double-conversion: enable for nios2
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Nios2 supports double conversion, tested using qemu:
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./main || echo "correct"
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correct
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uname -a
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Linux buildroot 4.19.16 #4 Sat Aug 3 14:46:48 CEST 2019 nios2 GNU/Linux
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Solves build error
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In file included from double-conversion.h:42:0,
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from number_decimalquantity.cpp:19:
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double-conversion-utils.h:119:2: error: #error Target architecture was not detected as supported by Double-Conversion.
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#error Target architecture was not detected as supported by Double-Conversion.
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detected by buildroot autobuilders:
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http://autobuild.buildroot.net/results/91e/91eaec34708d91f8a05af189243be0b7cabce31b/
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Patch sent upstream: https://github.com/unicode-org/icu/pull/725
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Bug report: https://unicode-org.atlassian.net/browse/ICU-20751
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[Bernd: Fixed path]
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Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
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[Added Changelog entry]
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Signed-off-by: Peter Seiderer <ps.report@gmx.net>
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* double-conversion: enable for xtensa
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Signed-off-by: Peter Seiderer <ps.report@gmx.net>
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[Retrieved (dand backported) from:
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https://github.com/google/double-conversion/commit/a54561be5588ac9b16d3c20760b9b554168bb8aa]
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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---
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Note:
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Double-conversion tested with:
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$ cat div.c
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double Div_double(double x, double y) { return x / y; }
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$ cat main.c
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double Div_double(double x, double y);
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int main(int argc, char** argv) {
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double result = Div_double(89255.0, 1e22);
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if (result == 89255e-22) {
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printf("correct result %e\n", result);
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return 1;
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} else {
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printf("wrong result %e\n", result);
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return 0;
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}
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}
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Tested for xtensa (using qemu_xtensa_lx60_defconfig plus BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE):
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$ ./host/bin/xtensa-buildroot-linux-uclibc-gcc -c div.c
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$ ./host/bin/xtensa-buildroot-linux-uclibc-gcc -c main.c
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$ ./host/bin/xtensa-buildroot-linux-uclibc-gcc -o main main.o div.o
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$ ./host/bin/qemu-xtensa -L staging main
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correct result 8.925500e-18
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---
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Changelog | 4 ++++
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double-conversion/utils.h | 3 ++-
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2 files changed, 6 insertions(+), 1 deletion(-)
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diff --git a/deps/double-conversion/double-conversion/utils.h b/deps/double-conversion/double-conversion/utils.h
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index 221467f..98ec28b 100644
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--- a/deps/double-conversion/double-conversion/utils.h
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+++ b/deps/double-conversion/double-conversion/utils.h
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@@ -94,6 +94,7 @@ int main(int argc, char** argv) {
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defined(__ARMEL__) || defined(__avr32__) || defined(_M_ARM) || defined(_M_ARM64) || \
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defined(__hppa__) || defined(__ia64__) || \
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defined(__mips__) || \
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+ defined(__nios2__) || \
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defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
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defined(_POWER) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
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defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
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@@ -102,7 +103,7 @@ int main(int argc, char** argv) {
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defined(__AARCH64EL__) || defined(__aarch64__) || defined(__AARCH64EB__) || \
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defined(__riscv) || defined(__e2k__) || \
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defined(__or1k__) || defined(__arc__) || \
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- defined(__microblaze__)
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+ defined(__microblaze__) || defined(__XTENSA__)
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#define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
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#elif defined(__mc68000__)
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#undef DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS
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