summaryrefslogtreecommitdiffstats
path: root/arch/tile/include
diff options
context:
space:
mode:
authorChris Metcalf <cmetcalf@tilera.com>2012-03-29 13:30:31 -0400
committerChris Metcalf <cmetcalf@tilera.com>2012-05-25 12:48:22 -0400
commit1efea40d4172a2a475ccb29b59d6221e9d0c174b (patch)
tree8152b61bb3fa83eb3403bca5cb05731c1063e999 /arch/tile/include
parent73636b1aacb1a07e6fbe0d25e560e69b024a8e25 (diff)
downloadblackbird-op-linux-1efea40d4172a2a475ccb29b59d6221e9d0c174b.tar.gz
blackbird-op-linux-1efea40d4172a2a475ccb29b59d6221e9d0c174b.zip
arch/tile: support building big-endian kernel
The toolchain supports big-endian mode now, so add support for building the kernel to run big-endian as well. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/include')
-rw-r--r--arch/tile/include/asm/byteorder.h20
-rw-r--r--arch/tile/include/asm/elf.h5
-rw-r--r--arch/tile/include/hv/hypervisor.h16
3 files changed, 41 insertions, 0 deletions
diff --git a/arch/tile/include/asm/byteorder.h b/arch/tile/include/asm/byteorder.h
index 9558416d578b..fb72ecf49218 100644
--- a/arch/tile/include/asm/byteorder.h
+++ b/arch/tile/include/asm/byteorder.h
@@ -1 +1,21 @@
+/*
+ * Copyright 2011 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#if defined (__BIG_ENDIAN__)
+#include <linux/byteorder/big_endian.h>
+#elif defined (__LITTLE_ENDIAN__)
#include <linux/byteorder/little_endian.h>
+#else
+#error "__BIG_ENDIAN__ or __LITTLE_ENDIAN__ must be defined."
+#endif
diff --git a/arch/tile/include/asm/elf.h b/arch/tile/include/asm/elf.h
index 623a6bb741c1..d16d006d660e 100644
--- a/arch/tile/include/asm/elf.h
+++ b/arch/tile/include/asm/elf.h
@@ -44,7 +44,11 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
#else
#define ELF_CLASS ELFCLASS32
#endif
+#ifdef __BIG_ENDIAN__
+#define ELF_DATA ELFDATA2MSB
+#else
#define ELF_DATA ELFDATA2LSB
+#endif
/*
* There seems to be a bug in how compat_binfmt_elf.c works: it
@@ -59,6 +63,7 @@ enum { ELF_ARCH = CHIP_ELF_TYPE() };
*/
#define elf_check_arch(x) \
((x)->e_ident[EI_CLASS] == ELF_CLASS && \
+ (x)->e_ident[EI_DATA] == ELF_DATA && \
(x)->e_machine == CHIP_ELF_TYPE())
/* The module loader only handles a few relocation types. */
diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h
index 793123e116fd..df74223944b5 100644
--- a/arch/tile/include/hv/hypervisor.h
+++ b/arch/tile/include/hv/hypervisor.h
@@ -494,11 +494,16 @@ int hv_confstr(HV_ConfstrQuery query, HV_VirtAddr buf, int len);
/** Tile coordinate */
typedef struct
{
+#ifndef __BIG_ENDIAN__
/** X coordinate, relative to supervisor's top-left coordinate */
int x;
/** Y coordinate, relative to supervisor's top-left coordinate */
int y;
+#else
+ int y;
+ int x;
+#endif
} HV_Coord;
@@ -986,8 +991,13 @@ HV_VirtAddrRange hv_inquire_virtual(int idx);
/** A range of ASID values. */
typedef struct
{
+#ifndef __BIG_ENDIAN__
HV_ASID start; /**< First ASID in the range. */
unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */
+#else
+ unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */
+ HV_ASID start; /**< First ASID in the range. */
+#endif
} HV_ASIDRange;
/** Returns information about a range of ASIDs.
@@ -1308,6 +1318,7 @@ typedef enum
/** Message recipient. */
typedef struct
{
+#ifndef __BIG_ENDIAN__
/** X coordinate, relative to supervisor's top-left coordinate */
unsigned int x:11;
@@ -1316,6 +1327,11 @@ typedef struct
/** Status of this recipient */
HV_Recip_State state:10;
+#else //__BIG_ENDIAN__
+ HV_Recip_State state:10;
+ unsigned int y:11;
+ unsigned int x:11;
+#endif
} HV_Recipient;
/** Send a message to a set of recipients.
OpenPOWER on IntegriCloud