[PATCH] RISC-V 64 bit support

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Hi,

We are working on porting Fedora to the free RISC-V architecture.

The attached patch has been used for a while to get NSPR to work on
the 64 bit general purpose variant of this architecture (RV64G).

This patch isn't authored by me, but by David Abdurachmanov.

Rich.

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From 5a81a12637cff835fb88be9a5162226c31afc3bf Mon Sep 17 00:00:00 2001
From: David Abdurachmanov <[email protected]>
Date: Thu, 18 Aug 2016 09:09:08 +0200
Subject: [PATCH] Add riscv64 in prcpucfg

Based on AArch64 values for now.

Signed-off-by: David Abdurachmanov <[email protected]>
---
 nspr/pr/include/md/_linux.cfg | 46 +++++++++++++++++++++++++++++++++++++++++++
 nspr/pr/include/md/_linux.h   |  2 ++
 2 files changed, 48 insertions(+)

diff --git a/nspr/pr/include/md/_linux.cfg b/nspr/pr/include/md/_linux.cfg
index 8cbf0cb..7376c04 100644
--- a/nspr/pr/include/md/_linux.cfg
+++ b/nspr/pr/include/md/_linux.cfg
@@ -1017,6 +1017,52 @@
 #define PR_BYTES_PER_WORD_LOG2   2
 #define PR_BYTES_PER_DWORD_LOG2  3
 
+#elif defined(__riscv64)
+
+#undef  IS_BIG_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
 #else
 
 #error "Unknown CPU architecture"
diff --git a/nspr/pr/include/md/_linux.h b/nspr/pr/include/md/_linux.h
index b4b298b..b49a7ef 100644
--- a/nspr/pr/include/md/_linux.h
+++ b/nspr/pr/include/md/_linux.h
@@ -57,6 +57,8 @@
 #define _PR_SI_ARCHITECTURE "m32r"
 #elif defined(__or1k__)
 #define _PR_SI_ARCHITECTURE "or1k"
+#elif defined(__riscv64)
+#define _PR_SI_ARCHITECTURE "riscv64"
 #else
 #error "Unknown CPU architecture"
 #endif
-- 
2.7.4


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