Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-arm26/thread_info.h b/include/asm-arm26/thread_info.h
new file mode 100644
index 0000000..50f41b5
--- /dev/null
+++ b/include/asm-arm26/thread_info.h
@@ -0,0 +1,144 @@
+/*
+ * linux/include/asm-arm26/thread_info.h
+ *
+ * Copyright (C) 2002 Russell King.
+ * Copyright (C) 2003 Ian Molton.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARM_THREAD_INFO_H
+#define __ASM_ARM_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+struct task_struct;
+struct exec_domain;
+
+#include <linux/compiler.h>
+#include <asm/fpstate.h>
+#include <asm/ptrace.h>
+#include <asm/types.h>
+
+typedef unsigned long mm_segment_t;
+
+struct cpu_context_save {
+ __u32 r4;
+ __u32 r5;
+ __u32 r6;
+ __u32 r7;
+ __u32 r8;
+ __u32 r9;
+ __u32 sl;
+ __u32 fp;
+ __u32 sp;
+ __u32 pc;
+};
+
+/*
+ * low level task data that entry.S needs immediate access to.
+ * We assume cpu_context follows immedately after cpu_domain.
+ */
+struct thread_info {
+ unsigned long flags; /* low level flags */
+ __s32 preempt_count; /* 0 => preemptable, <0 => bug */
+ mm_segment_t addr_limit; /* address limit */
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ __u32 cpu; /* cpu */
+ struct cpu_context_save cpu_context; /* cpu context */
+ struct restart_block restart_block;
+ union fp_state fpstate;
+};
+
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task &tsk, \
+ .exec_domain &default_exec_domain, \
+ .flags 0, \
+ .preempt_count 0, \
+ .addr_limit KERNEL_DS, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+}
+
+#define init_thread_info (init_thread_union.thread_info)
+#define init_stack (init_thread_union.stack)
+
+/*
+ * how to get the thread information struct from C
+ */
+static inline struct thread_info *current_thread_info(void) __attribute_const__;
+
+static inline struct thread_info *current_thread_info(void)
+{
+ register unsigned long sp asm ("sp");
+ return (struct thread_info *)(sp & ~0x1fff);
+}
+
+/* FIXME - PAGE_SIZE < 32K */
+#define THREAD_SIZE (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
+#define __get_user_regs(x) (((struct pt_regs *)((unsigned long)(x) + THREAD_SIZE - 8)) - 1)
+
+extern struct thread_info *alloc_thread_info(struct task_struct *task);
+extern void free_thread_info(struct thread_info *);
+
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+#define thread_saved_pc(tsk) \
+ ((unsigned long)(pc_pointer((tsk)->thread_info->cpu_context.pc)))
+#define thread_saved_fp(tsk) \
+ ((unsigned long)((tsk)->thread_info->cpu_context.fp))
+
+#else /* !__ASSEMBLY__ */
+
+#define TI_FLAGS 0
+#define TI_PREEMPT 4
+#define TI_ADDR_LIMIT 8
+#define TI_TASK 12
+#define TI_EXEC_DOMAIN 16
+#define TI_CPU 20
+#define TI_CPU_SAVE 24
+#define TI_RESTART_BLOCK 28
+#define TI_FPSTATE 68
+
+#endif
+
+#define PREEMPT_ACTIVE 0x04000000
+
+/*
+ * thread information flags:
+ * TIF_SYSCALL_TRACE - syscall trace active
+ * TIF_NOTIFY_RESUME - resumption notification requested
+ * TIF_SIGPENDING - signal pending
+ * TIF_NEED_RESCHED - rescheduling necessary
+ * TIF_USEDFPU - FPU was used by this task this quantum (SMP)
+ * TIF_POLLING_NRFLAG - true if poll_idle() is polling TIF_NEED_RESCHED
+ */
+#define TIF_NOTIFY_RESUME 0
+#define TIF_SIGPENDING 1
+#define TIF_NEED_RESCHED 2
+#define TIF_SYSCALL_TRACE 8
+#define TIF_USED_FPU 16
+#define TIF_POLLING_NRFLAG 17
+#define TIF_MEMDIE 18
+
+#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
+#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
+#define _TIF_USED_FPU (1 << TIF_USED_FPU)
+#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
+
+/*
+ * Change these and you break ASM code in entry-common.S
+ */
+#define _TIF_WORK_MASK 0x000000ff
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_ARM_THREAD_INFO_H */