hrev53060 adds 1 changeset to branch 'master'
old head: f481aba1a636f8c420b3fda2b70cc3d017a5f17e
new head: 51ab221fc753c6755e47a83abee10fbba5918131
overview:
https://git.haiku-os.org/haiku/log/?qt=range&q=51ab221fc753+%5Ef481aba1a636
----------------------------------------------------------------------------
51ab221fc753: glibc: Hack and slash in riscv64
* This isn't perfect, but should be a solid start.
Change-Id: Icb3f8c57b2bc4148d2ac14a71375d3f36c15e13b
Reviewed-on: https://review.haiku-os.org/c/1403
Reviewed-by: Alex von Gluck IV <kallisti5@xxxxxxxxxxx>
[ Alexander von Gluck IV <kallisti5@xxxxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev53060
Commit: 51ab221fc753c6755e47a83abee10fbba5918131
URL: https://git.haiku-os.org/haiku/commit/?id=51ab221fc753
Author: Alexander von Gluck IV <kallisti5@xxxxxxxxxxx>
Date: Wed Apr 10 15:46:12 2019 UTC
Committer: Alex von Gluck IV <kallisti5@xxxxxxxxxxx>
Commit-Date: Wed Apr 10 17:35:13 2019 UTC
----------------------------------------------------------------------------
19 files changed, 859 insertions(+), 113 deletions(-)
src/system/libroot/posix/arch/riscv64/Jamfile | 2 +
.../libroot/posix/glibc/arch/riscv64/Jamfile | 201 +++++++---------
.../arch/{sparc => generic}/math-underflow.h | 0
.../glibc/include/arch/riscv64/bits/endian.h | 5 +
.../posix/glibc/include/arch/riscv64/bits/fenv.h | 75 ++++++
.../glibc/include/arch/riscv64/bits/fenvinline.h | 9 +
.../glibc/include/arch/riscv64/bits/floatn.h | 97 ++++++++
.../glibc/include/arch/riscv64/bits/huge_val.h | 8 +
.../glibc/include/arch/riscv64/bits/hwcap.h | 51 ++++
.../posix/glibc/include/arch/riscv64/bits/link.h | 56 +++++
.../include/arch/riscv64/bits/long-double.h | 20 ++
.../glibc/include/arch/riscv64/bits/mathdef.h | 31 +++
.../glibc/include/arch/riscv64/bits/mathinline.h | 22 ++
.../posix/glibc/include/arch/riscv64/bits/nan.h | 5 +
.../glibc/include/arch/riscv64/bits/setjmp.h | 39 +++
.../glibc/include/arch/riscv64/bits/wordsize.h | 29 +++
.../posix/glibc/include/arch/riscv64/config.h | 235 +++++++++++++++++++
.../posix/glibc/include/arch/riscv64/math_ldbl.h | 79 +++++++
.../posix/glibc/include/arch/riscv64/stackinfo.h | 8 +
----------------------------------------------------------------------------
diff --git a/src/system/libroot/posix/arch/riscv64/Jamfile
b/src/system/libroot/posix/arch/riscv64/Jamfile
index 7ee7d1ba29..124eace65a 100644
--- a/src/system/libroot/posix/arch/riscv64/Jamfile
+++ b/src/system/libroot/posix/arch/riscv64/Jamfile
@@ -5,6 +5,8 @@ for architectureObject in [ MultiArchSubDirSetup riscv64 ] {
on $(architectureObject) {
local architecture = $(TARGET_PACKAGING_ARCH) ;
+ UsePrivateHeaders [ FDirName system arch $(TARGET_ARCH) ] ;
+
local genericSources =
setjmp_save_sigs.c
longjmp_return.c
diff --git a/src/system/libroot/posix/glibc/arch/riscv64/Jamfile
b/src/system/libroot/posix/glibc/arch/riscv64/Jamfile
index ba38192712..027bcaf842 100644
--- a/src/system/libroot/posix/glibc/arch/riscv64/Jamfile
+++ b/src/system/libroot/posix/glibc/arch/riscv64/Jamfile
@@ -1,139 +1,114 @@
SubDir HAIKU_TOP src system libroot posix glibc arch riscv64 ;
-SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc arch $(TARGET_ARCH) ;
-SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc include arch
- $(TARGET_ARCH) ;
+SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc include arch
$(TARGET_ARCH) ;
SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc include arch generic
;
SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc include ;
+SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc libio ;
SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc stdlib ;
SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc math ;
-SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc libio ;
SubDirSysHdrs $(HAIKU_TOP) src system libroot posix glibc ;
SubDirHdrs $(HAIKU_TOP) src system libroot posix glibc arch generic ;
UsePrivateHeaders libroot ;
+if $(OPTIM) = -O0 {
+ OPTIM = -O ;
+}
+
+# don't compile with debugging
+DEBUG = 0 ;
+
SubDirCcFlags -D_GNU_SOURCE -D_IEEE_LIBM ;
local genericSources =
- branred.c
+ lshift.c rshift.c submul_1.c
+ s_finite.c s_finitef.c
+ add_n.c sub_n.c
+ addmul_1.c mul_1.c
+
cmp.c dbl2mpn.c divrem.c
+ mpn2dbl.c mpn2flt.c mpn2ldbl.c
+ mul.c mul_n.c
+ s_isinf.c s_isinff.c
+ s_isnan.c s_isnanf.c
+ s_signbit.c s_signbitf.c #s_signbitl.c
+
+ s_nan.c s_nanf.c s_nanl.c
+ e_hypot.c e_hypotf.c #e_hypotl.c
+ w_hypot.c w_hypotf.c w_hypotl.c
+ s_fpclassify.c s_fpclassifyf.c
+ s_clog.c s_clogf.c s_clogl.c
+ s_log1p.c s_log1pf.c s_log1pl.c
+ s_csqrt.c s_csqrtf.c s_csqrtl.c
+ s_floor.c s_floorf.c
+ s_ceil.c s_ceilf.c
+ s_modf.c
+ w_powf.c e_powf.c
+ w_pow.c e_pow.c slowpow.c
+ w_exp.c e_exp.c slowexp.c
+ s_frexp.c s_expm1.c
dosincos.c
+ doasin.c
+ sincos32.c
+ branred.c
halfulp.c
+ mpa.c mplog.c mpexp.c
+ s_sin.c
+ s_atan.c s_atanf.c #s_atanl.c
+ s_tan.c
+ e_asin.c e_asinl.c
+ w_asin.c w_asinl.c
+ e_log10.c w_log10.c
+ e_logf.c e_logl.c
+ e_acos.c w_acos.c
+ e_atan2.c #e_atan2l.c
+ w_atan2.c w_atan2l.c mpatan2.c mpatan.c mptan.c mpsqrt.c w_sqrt.c
w_sqrtf.c
+ e_sqrtl.c
+ e_fmod.c w_fmod.c
+ e_log.c w_log.c
+ e_cosh.c w_cosh.c
+ e_sinh.c w_sinh.c
+ s_cosf.c k_cosf.c
+ s_sinf.c k_sinf.c
+ s_ldexp.c s_ldexpf.c
+ s_scalbnf.c s_scalbn.c
+ s_copysign.c s_copysignf.c #s_copysignl.c
+ s_tanh.c s_tanf.c k_tanf.c
+ s_lround.c s_lroundf.c s_round.c s_roundf.c
+ s_rint.c s_rintf.c s_lrintf.c
+ e_fmodf.c w_fmodf.c
+ e_atan2f.c w_atan2f.c
+ e_rem_pio2f.c k_rem_pio2f.c
+
memrchr.c
- mpa.c mpatan.c mpatan2.c mpexp.c mplog.c mpn2dbl.c
- mpn2flt.c mpn2ldbl.c mpsqrt.c mptan.c
- mul.c mul_n.c
- sincos32.c
- slowexp.c
- slowpow.c
-
- e_acosh.c e_acoshf.c # e_acoshl.c
- e_atan2.c e_atan2f.c # e_atan2l.c
- e_atanh.c e_atanhf.c # e_atanhl.c
- e_cosh.c e_coshf.c # e_coshl.c
- e_exp.c e_expf.c
- e_fmod.c e_fmodf.c # e_fmodl.c
- e_gamma_r.c e_gammaf_r.c
- e_hypot.c e_hypotf.c # e_hypotl.c
- e_j0.c e_j0f.c
- e_j1.c e_j1f.c
- e_jn.c e_jnf.c
- e_lgamma_r.c e_lgammaf_r.c
- e_log.c e_logf.c
- e_log10.c e_log10f.c
- e_pow.c e_powf.c # e_powl.c
- e_rem_pio2f.c
- e_remainder.c e_remainderf.c # e_remainderl.c
- e_scalb.c e_scalbf.c # e_scalbl.c
- e_sinh.c e_sinhf.c # e_sinhl.c
- k_cos.c k_cosf.c
- k_sin.c k_sinf.c
- k_rem_pio2.c k_rem_pio2f.c # k_rem_pio2l.c
- k_tan.c k_tanf.c
- s_asinh.c s_asinhf.c # s_asinhl.c
- s_atan.c s_atanf.c # s_atanl.c
- s_cbrt.c s_cbrtf.c # s_cbrtl.c
- s_ceil.c s_ceilf.c # s_ceill.c
- s_copysign.c s_copysignf.c # s_copysignl.c
- s_cos.c s_cosf.c
- s_erf.c s_erff.c # s_erfl.c
- s_expm1f.c s_expm1.c
- s_fabs.c s_fabsf.c # s_fabsl.S
- s_finite.c s_finitef.c # s_finitel.c
- s_floor.c s_floorf.c # s_floorl.c
- s_fma.c s_fmaf.c # s_fmal.c
- s_fmax.c s_fmaxf.c # s_fmaxl.c
- s_fmin.c s_fminf.c # s_fminl.c
- s_fpclassify.c s_fpclassifyf.c # s_fpclassifyl.c
- s_frexp.c s_frexpf.c # s_frexpl.c
- s_ilogb.c s_ilogbf.c
- s_isinf.c s_isinff.c # s_isinfl.c
- s_ldexp.c s_ldexpf.c # s_ldexpl.c
- s_llrint.c s_llrintf.c # s_llrintl.c
- s_log1p.c s_log1pf.c
- s_logb.c s_logbf.c # s_logbl.c
- s_lrint.c s_lrintf.c # s_lrintl.c
- s_lround.c s_lroundf.c
- s_modf.c s_modff.c # s_modfl.c
- s_nan.c s_nanf.c # s_nanl.c
- s_nextafter.c s_nextafterf.c # s_nextafterl.c
- s_nexttoward.c # s_nexttowardf.c s_nexttowardl.c
- s_round.c s_roundf.c # s_roundl.c
- s_scalbn.c s_scalbnf.c # s_scalbnl.c
- s_signbit.c s_signbitf.c # s_signbitl.c
- s_significand.c s_significandf.c
- s_signgam.c
- s_sin.c s_sinf.c # s_sinl.c
- s_sincos.c s_sincosf.c
- s_tan.c s_tanf.c
- s_tanh.c s_tanhf.c
- s_trunc.c s_truncf.c
- t_exp.c
- w_acos.c w_acosf.c # w_acosl.c
- w_acosh.c w_acoshf.c # w_acoshl.c
- w_atan2.c w_atan2f.c # w_atan2l.c
- w_asin.c w_asinf.c # w_asinl.c
- w_atanh.c w_atanhf.c # w_atanhl.c
- w_cosh.c w_coshf.c # w_coshl.c
- w_drem.c w_dremf.c # w_dreml.c
- w_exp.c w_expf.c # w_expl.c
- w_fmod.c w_fmodf.c # w_fmodl.c
- w_hypot.c w_hypotf.c # w_hypotl.c
- w_j0.c w_j0f.c
- w_j1.c w_j1f.c
- w_jn.c w_jnf.c
- w_lgamma.c w_lgammaf.c
- w_lgamma_r.c w_lgammaf_r.c
- w_log.c w_logf.c # w_logl.c
- w_log10.c w_log10f.c # w_log10l.c
- w_pow.c w_powf.c # w_powl.c
- w_remainder.c w_remainderf.c # w_remainderl.c
- w_scalb.c w_scalbf.c # w_scalbl.c
- w_sinh.c w_sinhf.c # w_sinhl.c
- # no asm for m68k in glibc
- w_sqrt.c w_sqrtf.c # w_sqrtl.c
;
+local architectureObject ;
+for architectureObject in [ MultiArchSubDirSetup riscv64 ] {
+ on $(architectureObject) {
+ local architecture = $(TARGET_PACKAGING_ARCH) ;
-MergeObject <$(TARGET_ARCH)>posix_gnu_arch_$(TARGET_ARCH)_generic.o :
- $(genericSources)
-;
-
-
-#MergeObject <$(TARGET_ARCH)>posix_gnu_arch_$(TARGET_ARCH)_other.o :
-# ;
-
+ MergeObject
<$(architecture)>posix_gnu_arch_$(TARGET_ARCH)_generic.o :
+ $(genericSources)
+ ;
-MergeObjectFromObjects <$(TARGET_ARCH)>posix_gnu_arch_$(TARGET_ARCH).o
- : :
- <$(TARGET_ARCH)>posix_gnu_arch_$(TARGET_ARCH)_generic.o
- # <$(TARGET_ARCH)>posix_gnu_arch_$(TARGET_ARCH)_other.o
-;
+ MergeObject
<$(architecture)>posix_gnu_arch_$(TARGET_ARCH)_others.o :
+ e_sqrt.c
+ e_sqrtf.c
+ ;
+ MergeObjectFromObjects
<$(architecture)>posix_gnu_arch_$(TARGET_ARCH).o
+ : :
+ <$(architecture)>posix_gnu_arch_$(TARGET_ARCH)_generic.o
+ <$(architecture)>posix_gnu_arch_$(TARGET_ARCH)_others.o
+ ;
-SEARCH on [ FGristFiles $(genericSources) ]
- = [ FDirName $(HAIKU_TOP) src system libroot posix glibc arch
- generic ] ;
+ SEARCH on [ FGristFiles $(genericSources) ]
+ = [ FDirName $(HAIKU_TOP) src system libroot posix
+ glibc arch generic ]
+ [ FDirName $(HAIKU_TOP) src system libroot posix
+ glibc arch generic longdouble 128bit ] ;
+ }
+}
diff --git a/src/system/libroot/posix/glibc/include/arch/sparc/math-underflow.h
b/src/system/libroot/posix/glibc/include/arch/generic/math-underflow.h
similarity index 100%
rename from src/system/libroot/posix/glibc/include/arch/sparc/math-underflow.h
rename to src/system/libroot/posix/glibc/include/arch/generic/math-underflow.h
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/endian.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/endian.h
new file mode 100644
index 0000000000..4aaf559d4f
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/endian.h
@@ -0,0 +1,5 @@
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenv.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenv.h
new file mode 100644
index 0000000000..d7a01d8c57
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenv.h
@@ -0,0 +1,75 @@
+/* Floating point environment, RISC-V version.
+ Copyright (C) 1998-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+enum
+ {
+ FE_INEXACT =
+#define FE_INEXACT (0x01)
+ FE_INEXACT,
+ FE_UNDERFLOW =
+#define FE_UNDERFLOW (0x02)
+ FE_UNDERFLOW,
+ FE_OVERFLOW =
+#define FE_OVERFLOW (0x04)
+ FE_OVERFLOW,
+ FE_DIVBYZERO =
+#define FE_DIVBYZERO (0x08)
+ FE_DIVBYZERO,
+ FE_INVALID =
+#define FE_INVALID (0x10)
+ FE_INVALID
+ };
+
+#define FE_ALL_EXCEPT \
+ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+enum
+ {
+ FE_TONEAREST =
+#define FE_TONEAREST (0x0)
+ FE_TONEAREST,
+ FE_TOWARDZERO =
+#define FE_TOWARDZERO (0x1)
+ FE_TOWARDZERO,
+ FE_DOWNWARD =
+#define FE_DOWNWARD (0x2)
+ FE_DOWNWARD,
+ FE_UPWARD =
+#define FE_UPWARD (0x3)
+ FE_UPWARD
+ };
+
+
+typedef unsigned int fexcept_t;
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((__const fenv_t *) -1)
+
+// #if __GLIBC_USE (IEC_60559_BFP_EXT)
+#if 0
+/* Type representing floating-point control modes. */
+typedef unsigned int femode_t;
+
+/* Default floating-point control modes. */
+# define FE_DFL_MODE ((const femode_t *) -1L)
+#endif
diff --git
a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenvinline.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenvinline.h
new file mode 100644
index 0000000000..bd1a30dfa2
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/fenvinline.h
@@ -0,0 +1,9 @@
+/* This file provides inline versions of floating-pint environment
+ handling functions. If there were any. */
+
+#ifndef __NO_MATH_INLINES
+
+/* Here is where the code would go. */
+
+#endif
+
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/floatn.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/floatn.h
new file mode 100644
index 0000000000..fb31be29e6
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/floatn.h
@@ -0,0 +1,97 @@
+/* Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_FLOATN_H
+#define _BITS_FLOATN_H
+
+#include <features.h>
+#include <bits/long-double.h>
+
+/* Defined to 1 if the current compiler invocation provides a
+ floating-point type with the IEEE 754 binary128 format, and this
+ glibc includes corresponding *f128 interfaces for it. */
+#ifndef __NO_LONG_DOUBLE_MATH
+# define __HAVE_FLOAT128 1
+#else
+/* glibc does not support _Float128 for platforms where long double is
+ normally binary128 when building with long double as binary64.
+ GCC's default for supported scalar modes does not support it either
+ in that case. */
+# define __HAVE_FLOAT128 0
+#endif
+
+/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
+ from the default float, double and long double types in this glibc. */
+#define __HAVE_DISTINCT_FLOAT128 0
+
+/* Defined to 1 if the current compiler invocation provides a
+ floating-point type with the right format for _Float64x, and this
+ glibc includes corresponding *f64x interfaces for it. */
+#define __HAVE_FLOAT64X __HAVE_FLOAT128
+
+/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
+ of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
+ the format of _Float128, which must be different from that of long
+ double. */
+#define __HAVE_FLOAT64X_LONG_DOUBLE __HAVE_FLOAT128
+
+#ifndef __ASSEMBLER__
+
+/* Defined to concatenate the literal suffix to be used with _Float128
+ types, if __HAVE_FLOAT128 is 1. */
+# if __HAVE_FLOAT128
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+/* The literal suffix f128 exists only since GCC 7.0. */
+# define __f128(x) x##l
+# else
+# define __f128(x) x##f128
+# endif
+# endif
+
+/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */
+# if __HAVE_FLOAT128
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# define __CFLOAT128 _Complex long double
+# else
+# define __CFLOAT128 _Complex _Float128
+# endif
+# endif
+
+/* The remaining of this file provides support for older compilers. */
+# if __HAVE_FLOAT128
+
+/* The type _Float128 exists only since GCC 7.0. */
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef long double _Float128;
+# endif
+
+/* Various built-in functions do not exist before GCC 7.0. */
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf128() (__builtin_huge_vall ())
+# define __builtin_inff128() (__builtin_infl ())
+# define __builtin_nanf128(x) (__builtin_nanl (x))
+# define __builtin_nansf128(x) (__builtin_nansl (x))
+# endif
+
+# endif
+
+#endif /* !__ASSEMBLER__. */
+
+#include <bits/floatn-common.h>
+
+#endif /* _BITS_FLOATN_H */
diff --git
a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/huge_val.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/huge_val.h
new file mode 100644
index 0000000000..4870e3c4ff
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/huge_val.h
@@ -0,0 +1,8 @@
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+
+# define HUGE_VAL (__builtin_huge_val())
+# define HUGE_VALF (__builtin_huge_valf())
+# define HUGE_VALL (__builtin_huge_vall())
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/hwcap.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/hwcap.h
new file mode 100644
index 0000000000..a991029f02
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/hwcap.h
@@ -0,0 +1,51 @@
+/* Defines for bits in AT_HWCAP.
+ Copyright (C) 2011-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if !defined(_SYS_AUXV_H) && !defined(_SYSDEPS_SYSDEP_H)
+# error "Never include <bits/hwcap.h> directly; use <sys/auxv.h> instead."
+#endif
+
+#define HWCAP_SPARC_FLUSH 0x00000001
+#define HWCAP_SPARC_STBAR 0x00000002
+#define HWCAP_SPARC_SWAP 0x00000004
+#define HWCAP_SPARC_MULDIV 0x00000008
+#define HWCAP_SPARC_V9 0x00000010
+#define HWCAP_SPARC_ULTRA3 0x00000020
+#define HWCAP_SPARC_BLKINIT 0x00000040
+#define HWCAP_SPARC_N2 0x00000080
+#define HWCAP_SPARC_MUL32 0x00000100
+#define HWCAP_SPARC_DIV32 0x00000200
+#define HWCAP_SPARC_FSMULD 0x00000400
+#define HWCAP_SPARC_V8PLUS 0x00000800
+#define HWCAP_SPARC_POPC 0x00001000
+#define HWCAP_SPARC_VIS 0x00002000
+#define HWCAP_SPARC_VIS2 0x00004000
+#define HWCAP_SPARC_ASI_BLK_INIT 0x00008000
+#define HWCAP_SPARC_FMAF 0x00010000
+#define HWCAP_SPARC_VIS3 0x00020000
+#define HWCAP_SPARC_HPC 0x00040000
+#define HWCAP_SPARC_RANDOM 0x00080000
+#define HWCAP_SPARC_TRANS 0x00100000
+#define HWCAP_SPARC_FJFMAU 0x00200000
+#define HWCAP_SPARC_IMA 0x00400000
+#define HWCAP_SPARC_ASI_CACHE_SPARING \
+ 0x00800000
+#define HWCAP_SPARC_PAUSE 0x01000000
+#define HWCAP_SPARC_CBCOND 0x02000000
+#define HWCAP_SPARC_CRYPTO 0x04000000
+#define HWCAP_SPARC_ADP 0x08000000
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/link.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/link.h
new file mode 100644
index 0000000000..124d9573aa
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/link.h
@@ -0,0 +1,56 @@
+/* Machine-specific declarations for dynamic linker interface. RISC-V version.
+ Copyright (C) 2005-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _LINK_H
+# error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+typedef struct La_riscv_regs
+{
+ unsigned long int lr_reg[8]; /* a0 - a7 */
+ double lr_fpreg[8]; /* fa0 - fa7 */
+ unsigned long int lr_ra;
+ unsigned long int lr_sp;
+} La_riscv_regs;
+
+/* Return values for calls from PLT on RISC-V. */
+typedef struct La_riscv_retval
+{
+ unsigned long int lrv_a0;
+ unsigned long int lrv_a1;
+ double lrv_fa0;
+ double lrv_fa1;
+} La_riscv_retval;
+
+__BEGIN_DECLS
+
+extern ElfW(Addr) la_riscv_gnu_pltenter (ElfW(Sym) *__sym, unsigned int __ndx,
+ uintptr_t *__refcook,
+ uintptr_t *__defcook,
+ La_riscv_regs *__regs,
+ unsigned int *__flags,
+ const char *__symname,
+ long int *__framesizep);
+extern unsigned int la_riscv_gnu_pltexit (ElfW(Sym) *__sym, unsigned int __ndx,
+ uintptr_t *__refcook,
+ uintptr_t *__defcook,
+ const La_riscv_regs *__inregs,
+ La_riscv_retval *__outregs,
+ const char *__symname);
+
+__END_DECLS
diff --git
a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/long-double.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/long-double.h
new file mode 100644
index 0000000000..df9d588df5
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/long-double.h
@@ -0,0 +1,20 @@
+/* Properties of long double type. ldbl-128 version.
+ Copyright (C) 2016-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* long double is distinct from double, so there is nothing to
+ define here. */
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathdef.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathdef.h
new file mode 100644
index 0000000000..13b271dec2
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathdef.h
@@ -0,0 +1,31 @@
+#if !defined _MATH_H && !defined _COMPLEX_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
+#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
+# define _MATH_H_MATHDEF 1
+
+typedef float float_t;
+typedef double double_t;
+
+/* The values returned by `ilogb' for 0 and NaN respectively. */
+# define FP_ILOGB0 (-2147483647)
+# define FP_ILOGBNAN (2147483647)
+
+# define INFINITY (__builtin_inff())
+
+/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
+ builtins are supported. */
+# if __FP_FAST_FMA
+# define FP_FAST_FMA 1
+# endif
+
+# if __FP_FAST_FMAF
+# define FP_FAST_FMAF 1
+# endif
+
+# if __FP_FAST_FMAL
+# define FP_FAST_FMAL 1
+# endif
+
+#endif /* ISO C99 */
diff --git
a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathinline.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathinline.h
new file mode 100644
index 0000000000..b9b3f6efab
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/mathinline.h
@@ -0,0 +1,22 @@
+#ifndef _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
+
+#define __NTH(fct) __attribute__ ((__nothrow__)) fct
+
+#ifndef __extern_always_inline
+# define __MATH_INLINE __inline
+#else
+# define __MATH_INLINE __extern_always_inline
+#endif
+
+#if defined __USE_ISOC99
+
+# define isgreater(x, y) __builtin_isgreater (x, y)
+# define isgreaterequal(x, y) __builtin_isgreaterequal (x, y)
+# define isless(x, y) __builtin_isless (x, y)
+# define islessequal(x, y) __builtin_islessequal (x, y)
+# define islessgreater(x, y) __builtin_islessgreater (x, y)
+# define isunordered(x, y) __builtin_isunordered (x, y)
+
+#endif
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/nan.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/nan.h
new file mode 100644
index 0000000000..c17012bcaa
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/nan.h
@@ -0,0 +1,5 @@
+#ifndef _MATH_H
+# error "Never use <bits/nan.h> directly; include <math.h> instead."
+#endif
+
+# define NAN (__builtin_nanf (""))
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/setjmp.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/setjmp.h
new file mode 100644
index 0000000000..3d37b73689
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/setjmp.h
@@ -0,0 +1,39 @@
+/* Define the machine-dependent type `jmp_buf'. RISC-V version.
+ Copyright (C) 2011-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _RISCV_BITS_SETJMP_H
+#define _RISCV_BITS_SETJMP_H
+
+typedef struct __jmp_buf_internal_tag
+ {
+ /* Program counter. */
+ long int __pc;
+ /* Callee-saved registers. */
+ long int __regs[12];
+ /* Stack pointer. */
+ long int __sp;
+
+ /* Callee-saved floating point registers. */
+#if defined __riscv_float_abi_double
+ double __fpregs[12];
+#elif !defined __riscv_float_abi_soft
+# error unsupported FLEN
+#endif
+ } __jmp_buf[1];
+
+#endif /* _RISCV_BITS_SETJMP_H */
diff --git
a/src/system/libroot/posix/glibc/include/arch/riscv64/bits/wordsize.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/wordsize.h
new file mode 100644
index 0000000000..0b8cd8fefd
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/bits/wordsize.h
@@ -0,0 +1,29 @@
+/* Determine the wordsize from the preprocessor defines. RISC-V version.
+ Copyright (C) 2002-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if __riscv_xlen == (__SIZEOF_POINTER__ * 8)
+# define __WORDSIZE __riscv_xlen
+#else
+# error unsupported ABI
+#endif
+
+#if __riscv_xlen == 64
+# define __WORDSIZE_TIME64_COMPAT32 1
+#else
+# error "rv32i-based targets are not supported"
+#endif
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/config.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/config.h
new file mode 100644
index 0000000000..557c4695ed
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/config.h
@@ -0,0 +1,235 @@
+//#if !defined __ASSEMBLER__ && !defined _ISOMAC && !defined __OPTIMIZE__
+//# error "glibc cannot be compiled without optimization"
+//#endif
+
+/* Another evil option when it comes to compiling the C library is
+ --ffast-math since it alters the ABI. */
+#if defined __FAST_MATH__ && !defined TEST_FAST_MATH
+# error "glibc must not be compiled with -ffast-math"
+#endif
+
+/* Define if using GNU ld, with support for weak symbols in a.out,
+ and for symbol set and warning messages extensions in a.out and ELF.
+ This implies HAVE_WEAK_SYMBOLS; set by --with-gnu-ld. */
+#define HAVE_GNU_LD 1
+
+/* Define if using ELF, which supports weak symbols.
+ This implies HAVE_ASM_WEAK_DIRECTIVE set by --with-elf. */
+#define HAVE_ELF 1
+
+/* Define if using XCOFF. Set by --with-xcoff. */
+#undef HAVE_XCOFF
+
+/* Define if weak symbols are available via the `.weak' directive. */
+#define HAVE_ASM_WEAK_DIRECTIVE 1
+
+/* Define if weak symbols are available via the `.weakext' directive. */
+#undef HAVE_ASM_WEAKEXT_DIRECTIVE
+
+/* Define to the assembler line separator character for multiple
+ assembler instructions per line. Default is `;' */
+#undef ASM_LINE_SEP
+
+/* Define if not using ELF, but `.init' and `.fini' sections are available. */
+#undef HAVE_INITFINI
+
+/* Define if __attribute__((section("foo"))) puts quotes around foo. */
+/*#define HAVE_SECTION_QUOTES 1
+ [zooey]: defining this causes assembler errors, and I don't think
+ that any BeOS-gcc actually produces quotes in sections...
+*/
+#undef HAVE_SECTION_QUOTES
+
+/* Define if using the GNU assembler, gas. */
+#define HAVE_GNU_AS 1
+
+/* Define if the assembler supports the `.set' directive. */
+#define HAVE_ASM_SET_DIRECTIVE 1
+
+/* Define to the name of the assembler's directive for
+ declaring a symbol global (default `.globl'). */
+#define ASM_GLOBAL_DIRECTIVE .globl
+
+/* Define to the prefix before `object' or `function' in the
+ assembler's `.type' directive, if it has one. */
+#undef ASM_TYPE_DIRECTIVE_PREFIX
+
+/* Define a symbol_name as a global .symbol_name for ld. */
+#undef HAVE_ASM_GLOBAL_DOT_NAME
+
+/* Define if the assembler generates debugging information directly. */
+#undef HAVE_CPP_ASM_DEBUGINFO
+
+/* Define if _Unwind_Find_FDE should be exported from glibc. */
+#undef EXPORT_UNWIND_FIND_FDE
+
+/* Define to use GNU libio instead of GNU stdio.
+ This is defined by configure under --enable-libio. */
+#define USE_IN_LIBIO 1
+
+/* Define if using ELF and the assembler supports the `.previous'
+ directive. */
+#define HAVE_ASM_PREVIOUS_DIRECTIVE 1
+
+/* Define if using ELF and the assembler supports the `.popsection'
+ directive. */
+#undef HAVE_ASM_POPSECTION_DIRECTIVE
+
+/* Define if versioning of the library is wanted. */
+#undef DO_VERSIONING
+
+/* Defined to the oldest ABI we support, like 2.1. */
+#undef GLIBC_OLDEST_ABI
+
+/* Define if static NSS modules are wanted. */
+#undef DO_STATIC_NSS
+
+/* Define if gcc uses DWARF2 unwind information for exception support. */
+#define HAVE_DWARF2_UNWIND_INFO 1
+
+/* Define if gcc uses DWARF2 unwind information for exception support
+ with static variable. */
+#define HAVE_DWARF2_UNWIND_INFO_STATIC 1
+
+/* Define if the compiler supports __builtin_expect. */
+#undef HAVE_BUILTIN_EXPECT
+
+/* Define if the compiler supports __builtin_memset. */
+#undef HAVE_BUILTIN_MEMSET
+
+/* Define if the __thread keyword is supported. */
+#undef HAVE___THREAD
+
+/* Define if the compiler supports __attribute__((tls_model(""))). */
+#undef HAVE_TLS_MODEL_ATTRIBUTE
+
+/* Define if the regparm attribute shall be used for local functions
+ (gcc on ix86 only). */
+#define USE_REGPARMS 0
+
+/* Defined on PowerPC if the GCC being used has a problem with clobbering
+ certain registers (CR0, MQ, CTR, LR) in asm statements. */
+#undef BROKEN_PPC_ASM_CR0
+
+/* Defined on SPARC if ld doesn't handle R_SPARC_WDISP22 against .hidden
+ symbol. sysdeps/sparc/sparc32/elf/configure. */
+#undef BROKEN_SPARC_WDISP22
+
+/* Define if the linker supports the -z combreloc option. */
+#undef HAVE_Z_COMBRELOC
+
+/* Define if the assembler supported .protected. */
+#undef HAVE_PROTECTED
+
+/* Define if the assembler supported .hidden. */
+#undef HAVE_HIDDEN
+
+/* Define if the compiler supports __attribute__ ((visibility (...))). */
+#undef HAVE_VISIBILITY_ATTRIBUTE
+
+/* Define if the compiler doesn't support __attribute__ ((visibility (...)))
+ together with __asm__ redirection properly. */
+#undef HAVE_BROKEN_VISIBILITY_ATTRIBUTE
+
+/* Define if the compiler doesn't support __attribute__ ((alias (...)))
+ together with __asm__ redirection properly. */
+#undef HAVE_BROKEN_ALIAS_ATTRIBUTE
+
+/* Define if _rtld_local structure should be forced into .sdata section. */
+#undef HAVE_SDATA_SECTION
+
+/* Define if binutils support TLS handling. */
+#undef HAVE_TLS_SUPPORT
+
+/* Define if the linker supports .preinit_array/.init_array/.fini_array
+ sections. */
+#undef HAVE_INITFINI_ARRAY
+
+/* Define if the access to static and hidden variables is position independent
+ and does not need relocations. */
+#undef PI_STATIC_AND_HIDDEN
+
+/* Define this to disable the `hidden_proto' et al macros in
+ include/libc-symbols.h that avoid PLT slots in the shared objects. */
+#undef NO_HIDDEN
+
+
+/* Defined to some form of __attribute__ ((...)) if the compiler supports
+ a different, more efficient calling convention. */
+#if USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
+# define internal_function __attribute__ ((regparm (3), stdcall))
+#endif
+
+/* Linux specific: minimum supported kernel version. */
+#undef __LINUX_KERNEL_VERSION
+
+/* Override abi-tags ABI version if necessary. */
+#undef __ABI_TAG_VERSION
+
+/* An extension in gcc 2.96 and up allows the subtraction of two
+ local labels. */
+#undef HAVE_SUBTRACT_LOCAL_LABELS
+
+/* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
+ getopt determine whether a parameter is a flag or not. This features
+ was disabled later since it caused trouble. We are by default therefore
+ disabling the support as well. */
+#undef USE_NONOPTION_FLAGS
+
+/* Mach/Hurd specific: define if mig supports the `retcode' keyword. */
+#undef HAVE_MIG_RETCODE
+
+/* Mach specific: define if the `host_page_size' RPC is available. */
+#undef HAVE_HOST_PAGE_SIZE
+
+/* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available. */
+#undef HAVE_I386_IO_PERM_MODIFY
+
+/* Mach/i386 specific: define if the `i386_set_gdt' RPC is available. */
+#undef HAVE_I386_SET_GDT
+
+/*
+ */
+
+#ifndef _LIBC
+
+/* These symbols might be defined by some sysdeps configures.
+ They are used only in miscellaneous generator programs, not
+ in compiling libc itself. */
+
+/* sysdeps/generic/configure.in */
+#undef HAVE_PSIGNAL
+
+/* sysdeps/unix/configure.in */
+#define HAVE_STRERROR
+
+/* sysdeps/unix/common/configure.in */
+#undef HAVE_SYS_SIGLIST
+#undef HAVE__SYS_SIGLIST
+#undef HAVE__CTYPE_
+#undef HAVE___CTYPE_
+#undef HAVE___CTYPE
+#undef HAVE__CTYPE__
+#undef HAVE__CTYPE
+#undef HAVE__LOCP
+
+#endif
+
+/*
+ */
+
+#ifdef _LIBC
+
+/* The zic and zdump programs need these definitions. */
+
+#define HAVE_STRERROR 1
+
+/* The locale code needs these definitions. */
+
+#define HAVE_REGEX 1
+
+//#define HAVE_MMAP 1
+#undef HAVE_MMAP
+
+#endif
+
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/math_ldbl.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/math_ldbl.h
new file mode 100644
index 0000000000..b9ff8dadaf
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/math_ldbl.h
@@ -0,0 +1,79 @@
+#ifndef _MATH_PRIVATE_H_
+#error "Never use <math_ldbl.h> directly; include <math_private.h> instead."
+#endif
+
+/* A union which permits us to convert between a long double and
+ three 32 bit ints. */
+
+typedef union
+{
+ long double value;
+ struct
+ {
+ u_int32_t lsw;
+ u_int32_t msw;
+ int sign_exponent:16;
+ unsigned int empty1:16;
+ unsigned int empty0:32;
+ } parts;
+} ieee_long_double_shape_type;
+
+/* Get three 32 bit ints from a double. */
+
+#define GET_LDOUBLE_WORDS(exp,ix0,ix1,d) \
+do { \
+ ieee_long_double_shape_type ew_u; \
+ ew_u.value = (d); \
+ (exp) = ew_u.parts.sign_exponent; \
+ (ix0) = ew_u.parts.msw; \
+ (ix1) = ew_u.parts.lsw; \
+} while (0)
+
+/* Set a double from two 32 bit ints. */
+
+#define SET_LDOUBLE_WORDS(d,exp,ix0,ix1) \
+do { \
+ ieee_long_double_shape_type iw_u; \
+ iw_u.parts.sign_exponent = (exp); \
+ iw_u.parts.msw = (ix0); \
+ iw_u.parts.lsw = (ix1); \
+ (d) = iw_u.value; \
+} while (0)
+
+/* Get the more significant 32 bits of a long double mantissa. */
+
+#define GET_LDOUBLE_MSW(v,d) \
+do { \
+ ieee_long_double_shape_type sh_u; \
+ sh_u.value = (d); \
+ (v) = sh_u.parts.msw; \
+} while (0)
+
+/* Set the more significant 32 bits of a long double mantissa from an int. */
+
+#define SET_LDOUBLE_MSW(d,v) \
+do { \
+ ieee_long_double_shape_type sh_u; \
+ sh_u.value = (d); \
+ sh_u.parts.msw = (v); \
+ (d) = sh_u.value; \
+} while (0)
+
+/* Get int from the exponent of a long double. */
+
+#define GET_LDOUBLE_EXP(exp,d) \
+do { \
+ ieee_long_double_shape_type ge_u; \
+ ge_u.value = (d); \
+ (exp) = ge_u.parts.sign_exponent; \
+} while (0)
+
+/* Set exponent of a long double from an int. */
+
+#define SET_LDOUBLE_EXP(d,exp) \
+do { \
+ ieee_long_double_shape_type se_u; \
+ se_u.value = (d); \
+ se_u.parts.sign_exponent = (exp); \
+ (d) = se_u.value; \
+} while (0)
diff --git a/src/system/libroot/posix/glibc/include/arch/riscv64/stackinfo.h
b/src/system/libroot/posix/glibc/include/arch/riscv64/stackinfo.h
new file mode 100644
index 0000000000..b5f10c6c0b
--- /dev/null
+++ b/src/system/libroot/posix/glibc/include/arch/riscv64/stackinfo.h
@@ -0,0 +1,8 @@
+#ifndef _STACKINFO_H
+#define _STACKINFO_H 1
+
+/* On riscv the stack grows down. */
+#define _STACK_GROWS_DOWN 1
+
+#endif /* stackinfo.h */
+
