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-sparc/thread_info.h b/include/asm-sparc/thread_info.h
new file mode 100644
index 0000000..104f03c
--- /dev/null
+++ b/include/asm-sparc/thread_info.h
@@ -0,0 +1,153 @@
+/*
+ * thread_info.h: sparc low-level thread information
+ * adapted from the ppc version by Pete Zaitcev, which was
+ * adapted from the i386 version by Paul Mackerras
+ *
+ * Copyright (C) 2002 David Howells (dhowells@redhat.com)
+ * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
+ * - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+
+#ifndef _ASM_THREAD_INFO_H
+#define _ASM_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#include <asm/btfixup.h>
+#include <asm/ptrace.h>
+#include <asm/page.h>
+
+/*
+ * Low level task data.
+ *
+ * If you change this, change the TI_* offsets below to match.
+ */
+#define NSWINS 8
+struct thread_info {
+ unsigned long uwinmask;
+ struct task_struct *task; /* main task structure */
+ struct exec_domain *exec_domain; /* execution domain */
+ unsigned long flags; /* low level flags */
+
+ int cpu; /* cpu we're on */
+ int preempt_count;
+ int softirq_count;
+ int hardirq_count;
+
+ /* Context switch saved kernel state. */
+ unsigned long ksp; /* ... ksp __attribute__ ((aligned (8))); */
+ unsigned long kpc;
+ unsigned long kpsr;
+ unsigned long kwim;
+
+ /* A place to store user windows and stack pointers
+ * when the stack needs inspection.
+ */
+ struct reg_window reg_window[NSWINS]; /* align for ldd! */
+ unsigned long rwbuf_stkptrs[NSWINS];
+ unsigned long w_saved;
+
+ struct restart_block restart_block;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .uwinmask = 0, \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .flags = 0, \
+ .cpu = 0, \
+ .preempt_count = 1, \
+ .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 */
+register struct thread_info *current_thread_info_reg asm("g6");
+#define current_thread_info() (current_thread_info_reg)
+
+/*
+ * thread information allocation
+ */
+#if PAGE_SHIFT == 13
+#define THREAD_INFO_ORDER 0
+#else /* PAGE_SHIFT */
+#define THREAD_INFO_ORDER 1
+#endif
+
+BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info, void)
+#define alloc_thread_info(tsk) BTFIXUP_CALL(alloc_thread_info)()
+
+BTFIXUPDEF_CALL(void, free_thread_info, struct thread_info *)
+#define free_thread_info(ti) BTFIXUP_CALL(free_thread_info)(ti)
+
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Size of kernel stack for each process.
+ * Observe the order of get_free_pages() in alloc_thread_info().
+ * The sun4 has 8K stack too, because it's short on memory, and 16K is a waste.
+ */
+#define THREAD_SIZE 8192
+
+/*
+ * Offsets in thread_info structure, used in assembly code
+ * The "#define REGWIN_SZ 0x40" was abolished, so no multiplications.
+ */
+#define TI_UWINMASK 0x00 /* uwinmask */
+#define TI_TASK 0x04
+#define TI_EXECDOMAIN 0x08 /* exec_domain */
+#define TI_FLAGS 0x0c
+#define TI_CPU 0x10
+#define TI_PREEMPT 0x14 /* preempt_count */
+#define TI_SOFTIRQ 0x18 /* softirq_count */
+#define TI_HARDIRQ 0x1c /* hardirq_count */
+#define TI_KSP 0x20 /* ksp */
+#define TI_KPC 0x24 /* kpc (ldd'ed with kpc) */
+#define TI_KPSR 0x28 /* kpsr */
+#define TI_KWIM 0x2c /* kwim (ldd'ed with kpsr) */
+#define TI_REG_WINDOW 0x30
+#define TI_RWIN_SPTRS 0x230
+#define TI_W_SAVED 0x250
+/* #define TI_RESTART_BLOCK 0x25n */ /* Nobody cares */
+
+#define PREEMPT_ACTIVE 0x4000000
+
+/*
+ * thread information flag bit numbers
+ */
+#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
+#define TIF_SIGPENDING 2 /* signal pending */
+#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
+#define TIF_USEDFPU 8 /* FPU was used by this task
+ * this quantum (SMP) */
+#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling
+ * TIF_NEED_RESCHED */
+#define TIF_MEMDIE 10
+
+/* as above, but as bit values */
+#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
+#define _TIF_USEDFPU (1<<TIF_USEDFPU)
+#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_THREAD_INFO_H */