From 95bda64fb4cf1825fea745e918cfe8202843f0ba Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Sat, 30 Jan 2016 07:18:02 +0100
Subject: [PATCH] Add nios2 support

Add support for the nios2 CPU.

Signed-off-by: Marek Vasut <marex@denx.de>
Upstream-Status: Submitted [ https://bugzilla.mozilla.org/show_bug.cgi?id=1244421 ]
---
 nspr/pr/include/md/_linux.cfg | 45 +++++++++++++++++++++++++++++++++++++++++++
 nspr/pr/include/md/_linux.h   | 14 ++++++++++++++
 2 files changed, 59 insertions(+)

Index: nspr/pr/include/md/_linux.cfg
===================================================================
--- nspr.orig/pr/include/md/_linux.cfg
+++ nspr/pr/include/md/_linux.cfg
@@ -975,6 +975,51 @@
 #define PR_BYTES_PER_WORD_LOG2   2
 #define PR_BYTES_PER_DWORD_LOG2  3
 
+#elif defined(__nios2__)
+
+#define IS_LITTLE_ENDIAN    1
+#undef  IS_BIG_ENDIAN
+
+#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   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#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    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#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   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
 #elif defined(__or1k__)
 
 #undef  IS_LITTLE_ENDIAN
Index: nspr/pr/include/md/_linux.h
===================================================================
--- nspr.orig/pr/include/md/_linux.h
+++ nspr/pr/include/md/_linux.h
@@ -55,6 +55,8 @@
 #define _PR_SI_ARCHITECTURE "avr32"
 #elif defined(__m32r__)
 #define _PR_SI_ARCHITECTURE "m32r"
+#elif defined(__nios2__)
+#define _PR_SI_ARCHITECTURE "nios2"
 #elif defined(__or1k__)
 #define _PR_SI_ARCHITECTURE "or1k"
 #elif defined(__riscv) && (__riscv_xlen == 32)
@@ -129,6 +131,18 @@ extern PRInt32 _PR_x86_64_AtomicSet(PRIn
 #define _MD_ATOMIC_SET                _PR_x86_64_AtomicSet
 #endif
 
+#if defined(__nios2__)
+#if defined(__GNUC__)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#endif
+#endif
+
 #if defined(__or1k__)
 #if defined(__GNUC__)
 /* Use GCC built-in functions */