From 2571df0e30b4976d7a12dbc6fbec4f1c4027924d Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Thu, 28 Jan 2016 04:13:13 +0100
Subject: [PATCH] Altera NIOS2 support

Add simple nios2 configuration support.

* include/private/gcconfig.h (NIOS2): New macro.
* include/private/gcconfig.h (mach_type_known, CPP_WORDSZ, MACH_TYPE,
OS_TYPE, DYNAMIC_LOADING, _end, __data_start, DATASTART, DATAEND,
ALIGNMENT, HBLKSIZE, HBLKSIZE, LINUX_STACKBOTTOM, NO_GETCONTEXT):
Define for NIOS2.

Signed-off-by: Marek Vasut <marex@denx.de>
Upstream-Status: Backport [ https://github.com/ivmai/bdwgc.git 2571df0e30b4976d7a12dbc6fbec4f1c4027924d ]
---
 include/private/gcconfig.h | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index c467c26..92d4727 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -181,6 +181,10 @@
 #    endif
 #    define mach_type_known
 # endif
+# if defined(__NIOS2__) || defined(__NIOS2) || defined(__nios2__)
+#   define NIOS2 /* Altera NIOS2 */
+#   define mach_type_known
+# endif
 # if defined(DGUX) && (defined(i386) || defined(__i386__))
 #    define I386
 #    ifndef _USING_DGUX
@@ -1658,6 +1662,24 @@
 #   endif
 # endif
 
+# ifdef NIOS2
+#  define CPP_WORDSZ 32
+#  define MACH_TYPE "NIOS2"
+#  ifdef LINUX
+#    define OS_TYPE "LINUX"
+#    define DYNAMIC_LOADING
+     extern int _end[];
+     extern int __data_start[];
+#    define DATASTART ((ptr_t)(__data_start))
+#    define DATAEND ((ptr_t)(_end))
+#    define ALIGNMENT 4
+#    ifndef HBLKSIZE
+#      define HBLKSIZE 4096
+#    endif
+#    define LINUX_STACKBOTTOM
+#  endif /* Linux */
+# endif
+
 # ifdef HP_PA
 #   define MACH_TYPE "HP_PA"
 #   ifdef __LP64__
@@ -2622,6 +2644,7 @@
 #if ((defined(UNIX_LIKE) && (defined(DARWIN) || defined(HURD) \
                              || defined(OPENBSD) || defined(ARM32) \
-                             || defined(MIPS) || defined(AVR32))) \
+                             || defined(MIPS) || defined(AVR32) \
+                             || defined(NIOS2))) \
      || (defined(LINUX) && (defined(SPARC) || defined(M68K))) \
      || ((defined(RTEMS) || defined(PLATFORM_ANDROID)) && defined(I386))) \
     && !defined(NO_GETCONTEXT)
-- 
2.7.0