Add riscv64 support

Signed-off-by: Eduard Vintilă <[email protected]>
unikraft · Jul 20, 2022 · 7dcfd80 · 7dcfd80
1 parent 6375324
commit 7dcfd80
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Showing 4 changed files with 58 additions and 2 deletions.
diff --git a/Makefile.uk b/Makefile.uk
@@ -70,9 +70,11 @@ LIBNEWLIBC_COMMON_INCLUDES-y     += -I$(LIBNEWLIBC_BASE)/musl-imported/include
 LIBNEWLIBC_COMMON_INCLUDES-y     += -I$(LIBNEWLIBC_BASE)/musl-imported/arch/generic
 LIBNEWLIBGLUE_CINCLUDES-y        += -I$(LIBNEWLIBC_BASE)/musl-imported/src/include
 LIBNEWLIBC_COMMON_INCLUDES-$(CONFIG_ARCH_X86_64) += -I$(LIBNEWLIBC_BASE)/musl-imported/arch/x86_64
+LIBNEWLIBC_COMMON_INCLUDES-$(CONFIG_ARCH_RISCV_64) += -I$(LIBNEWLIB_LIBC)/machine/riscv
 LIBNEWLIBC_COMMON_INCLUDES-y     += -I$(LIBNEWLIB_LIBC)/include
 
 CINCLUDES-$(CONFIG_LIBNEWLIBC)   += $(LIBNEWLIBC_COMMON_INCLUDES-y)
+ASINCLUDES-$(CONFIG_LIBNEWLIBC)  += $(LIBNEWLIBC_COMMON_INCLUDES-y)
 CXXINCLUDES-$(CONFIG_LIBNEWLIBC) += $(LIBNEWLIBC_COMMON_INCLUDES-y)
 
 LIBNEWLIBM_CINCLUDES   += -I$(LIBNEWLIB_LIBM)/common
@@ -93,6 +95,9 @@ ifeq ($(CONFIG_ARCH_X86_64),y)
 LIBNEWLIB_GLOBAL_FLAGS-y  += -D_LDBL_EQ_DBL
 LIBNEWLIB_GLOBAL_FLAGS-y  += -D_HAVE_LONG_DOUBLE
 endif
+ifeq ($(CONFIG_ARCH_RISCV_64),y)
+LIBNEWLIB_GLOBAL_FLAGS-y  += -D_HAVE_LONG_DOUBLE
+endif
 
 CFLAGS-$(CONFIG_LIBNEWLIBC)   += $(LIBNEWLIB_GLOBAL_FLAGS-y)
 CXXFLAGS-$(CONFIG_LIBNEWLIBC) += $(LIBNEWLIB_GLOBAL_FLAGS-y)
@@ -742,11 +747,14 @@ LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strcasecmp.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strcat.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strchr.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strchr.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/strchr.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strcmp.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strcmp.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/machine/riscv/strcmp.S
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strcoll.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strcpy.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strcpy.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/machine/riscv/strcpy.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strcspn.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strdup.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strdup_r.c
@@ -756,19 +764,23 @@ LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strlcat.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strlcpy.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strlen.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strlen.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/machine/riscv/strlen.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strlwr.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strncasecmp.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strncasecmp_l.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strncat.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strncmp.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strncmp.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/strncmp.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strncpy.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strnlen.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strnlen.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/strnlen.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strnstr.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strpbrk.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strrchr.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strrchr.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/strrchr.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strsep.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strsignal.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strspn.c
@@ -813,11 +825,13 @@ LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/memccpy.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/mempcpy.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/stpcpy.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/stpcpy.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/stpcpy.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/stpncpy.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strndup.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strcasestr.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/string/strchrnul.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/strchrnul.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/string/strchrnul.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/strndup_r.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/wcpcpy.c
 LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/string/wcpncpy.c
@@ -867,6 +881,7 @@ LIBNEWLIBC_SRCS-y += $(LIBNEWLIB_LIBC)/unix/dirname.c
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_X86_64) += $(LIBNEWLIB_LIBC)/machine/x86_64/setjmp.S
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_32) += $(LIBNEWLIB_LIBC)/machine/arm/setjmp.S
 LIBNEWLIBC_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBNEWLIB_LIBC)/machine/aarch64/setjmp.S
+LIBNEWLIBC_SRCS-$(CONFIG_ARCH_RISCV_64) += $(LIBNEWLIB_LIBC)/machine/riscv/setjmp.S
 
 ################################################################################
 # Newlib/libm code -- math

diff --git a/include/fcntl.h b/include/fcntl.h
@@ -6,7 +6,7 @@
 
 #include <uk/config.h>
 
-#if (defined CONFIG_ARCH_X86_64)
+#if ((defined CONFIG_ARCH_X86_64) || (defined CONFIG_ARCH_RISCV_64))
 #define O_NOFOLLOW  0400000
 #define O_DIRECTORY 0200000
 #define O_CLOEXEC  02000000

diff --git a/include/limits.h b/include/limits.h
@@ -51,7 +51,7 @@
 #define SHRT_MAX        0x7fff
 #define USHRT_MAX       0xffff
 
-#if defined(__x86_64__)
+#if defined(__x86_64__) || defined(__RISCV_64__)
 # define LONG_MAX       0x7fffffffffffffffL
 # define ULONG_MAX      0xffffffffffffffffUL
 #else

diff --git a/patches/0013-Define-llroundl-for-all-targets.patch b/patches/0013-Define-llroundl-for-all-targets.patch
@@ -0,0 +1,41 @@
+From c3737ee23f13b8cf453cf91c28be4c0e4a320970 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Eduard=20Vintil=C4=83?= <[email protected]>
+Date: Thu, 21 Jul 2022 00:26:24 +0300
+Subject: [PATCH] Define llroundl for all targets
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The RISC-V ABI spec states that sizeof(long double) is equal to 16,
+hence on such targets a double is not as wide as a long double.
+
+Newlibc's implementation for llroundl is just a wrapper for llround, and
+is not defined at all for targets where the size of the two types differ.
+Musl wraps llround using llroundl regardless of the difference between double and long double,
+so we remove the compile-time check such that llroundl is defined for all targets in newlibc as well.
+
+Signed-off-by: Eduard Vintilă <[email protected]>
+---
+ newlib/libm/common/llroundl.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/newlib/libm/common/llroundl.c b/newlib/libm/common/llroundl.c
+index d663226..1e1fda4 100644
+--- a/newlib/libm/common/llroundl.c
++++ b/newlib/libm/common/llroundl.c
+@@ -31,12 +31,9 @@ POSSIBILITY OF SUCH DAMAGE.
+ #include <math.h>
+ #include "local.h"
+
+-/* On platforms where long double is as wide as double.  */
+-#ifdef _LDBL_EQ_DBL
+ long long int
+ llroundl (long double x)
+ {
+   return llround(x);
+ }
+-#endif
+
+-- 
+2.37.1
+