arch/tile: core support for Tilera 32-bit chips.

This change is the core kernel support for TILEPro and TILE64 chips.
No driver support (except the console driver) is included yet.

This includes the relevant Linux headers in asm/; the low-level
low-level "Tile architecture" headers in arch/, which are
shared with the hypervisor, etc., and are build-system agnostic;
and the relevant hypervisor headers in hv/.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/arch/tile/kernel/asm-offsets.c b/arch/tile/kernel/asm-offsets.c
new file mode 100644
index 000000000000..01ddf19cc36d
--- /dev/null
+++ b/arch/tile/kernel/asm-offsets.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2010 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.
+ *
+ * Generates definitions from c-type structures used by assembly sources.
+ */
+
+#include <linux/kbuild.h>
+#include <linux/thread_info.h>
+#include <linux/sched.h>
+#include <linux/hardirq.h>
+#include <linux/ptrace.h>
+#include <hv/hypervisor.h>
+
+/* Check for compatible compiler early in the build. */
+#ifdef CONFIG_TILEGX
+# ifndef __tilegx__
+#  error Can only build TILE-Gx configurations with tilegx compiler
+# endif
+# ifndef __LP64__
+#  error Must not specify -m32 when building the TILE-Gx kernel
+# endif
+#else
+# ifdef __tilegx__
+#  error Can not build TILEPro/TILE64 configurations with tilegx compiler
+# endif
+#endif
+
+void foo(void)
+{
+        DEFINE(SINGLESTEP_STATE_BUFFER_OFFSET, \
+               offsetof(struct single_step_state, buffer));
+        DEFINE(SINGLESTEP_STATE_FLAGS_OFFSET, \
+               offsetof(struct single_step_state, flags));
+        DEFINE(SINGLESTEP_STATE_ORIG_PC_OFFSET, \
+               offsetof(struct single_step_state, orig_pc));
+        DEFINE(SINGLESTEP_STATE_NEXT_PC_OFFSET, \
+               offsetof(struct single_step_state, next_pc));
+        DEFINE(SINGLESTEP_STATE_BRANCH_NEXT_PC_OFFSET, \
+               offsetof(struct single_step_state, branch_next_pc));
+        DEFINE(SINGLESTEP_STATE_UPDATE_VALUE_OFFSET, \
+               offsetof(struct single_step_state, update_value));
+
+        DEFINE(THREAD_INFO_TASK_OFFSET, \
+               offsetof(struct thread_info, task));
+        DEFINE(THREAD_INFO_FLAGS_OFFSET, \
+               offsetof(struct thread_info, flags));
+        DEFINE(THREAD_INFO_STATUS_OFFSET, \
+               offsetof(struct thread_info, status));
+        DEFINE(THREAD_INFO_HOMECACHE_CPU_OFFSET, \
+               offsetof(struct thread_info, homecache_cpu));
+        DEFINE(THREAD_INFO_STEP_STATE_OFFSET, \
+               offsetof(struct thread_info, step_state));
+
+        DEFINE(TASK_STRUCT_THREAD_KSP_OFFSET,
+               offsetof(struct task_struct, thread.ksp));
+        DEFINE(TASK_STRUCT_THREAD_PC_OFFSET,
+               offsetof(struct task_struct, thread.pc));
+
+        DEFINE(HV_TOPOLOGY_WIDTH_OFFSET, \
+               offsetof(HV_Topology, width));
+        DEFINE(HV_TOPOLOGY_HEIGHT_OFFSET, \
+               offsetof(HV_Topology, height));
+
+        DEFINE(IRQ_CPUSTAT_SYSCALL_COUNT_OFFSET, \
+               offsetof(irq_cpustat_t, irq_syscall_count));
+}