From 86297c41a26f18d924e64fc93321c59cbc4c48dd Mon Sep 17 00:00:00 2001
From: Thomas Bushnell <thomas@gnu.org>
Date: Mon, 26 Apr 1999 05:58:44 +0000
Subject: 1998-11-30  OKUJI Yoshinori  <okuji@kuicr.kyoto-u.ac.jp>

	Clean up linux emulation code to make it architecture-independent
	as much as possible.

	* linux: Renamed from linuxdev.
	* Makefile.in (objfiles): Add linux.o instead of linuxdev.o.
	(MAKE): New variable. Used for the linux.o target.
	* configure.in: Add AC_CHECK_TOOL(MAKE, make).
	* i386/i386/spl.h: Include <i386/ipl.h>, for compatibility with
	OSF Mach 3.0. Suggested by Elgin Lee <ehl@funghi.com>.
	* linux/src: Renamed from linux/linux.
	* linux/dev: Renamed from linux/mach.
	* linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h,
	instead of mach/include/linux/autoconf.h.
	* Makefile.in (all): Target ../linux.o instead of ../linuxdev.o.
	* linux/dev/drivers/block/genhd.c: Include <machine/spl.h> instead
	of <i386/ipl.h>.
	* linux/dev/drivers/net/auto_irq.c: Remove unneeded header files,
	<i386/ipl.h> and <i386/pic.h>.
	* linux/dev/init/main.c: Many i386-dependent codes moved to ...
	* linux/dev/arch/i386/irq.c: ... here.
	* linux/dev/arch/i386/setup.c: New file.
	* linux/dev/arch/i386/linux_emul.h: Likewise.
	* linux/dev/arch/i386/glue/timer.c: Merged into sched.c.
	* linux/dev/arch/i386/glue/sched.c: Include <machine/spl.h> instead
	of <i386/ipl.h>, and moved to ...
	* linux/dev/kernel/sched.c: ... here.
	* linux/dev/arch/i386/glue/block.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/blocl.c: ... here.
	* linux/dev/arch/i386/glue/net.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/net.c: ... here.
	* linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ...
	* linux/dev/glue/misc.c: ... here.
	* linux/dev/arch/i386/glue/kmem.c: Moved to ...
	* linux/dev/glue/kmem.c: ... here.
---
 linux/src/kernel/softirq.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 linux/src/kernel/softirq.c

(limited to 'linux/src/kernel/softirq.c')

diff --git a/linux/src/kernel/softirq.c b/linux/src/kernel/softirq.c
new file mode 100644
index 0000000..022b553
--- /dev/null
+++ b/linux/src/kernel/softirq.c
@@ -0,0 +1,54 @@
+/*
+ *	linux/kernel/softirq.c
+ *
+ *	Copyright (C) 1992 Linus Torvalds
+ *
+ * do_bottom_half() runs at normal kernel priority: all interrupts
+ * enabled.  do_bottom_half() is atomic with respect to itself: a
+ * bottom_half handler need not be re-entrant.
+ */
+
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/bitops.h>
+
+unsigned long intr_count = 0;
+
+int bh_mask_count[32];
+unsigned long bh_active = 0;
+unsigned long bh_mask = 0;
+void (*bh_base[32])(void);
+
+
+asmlinkage void do_bottom_half(void)
+{
+	unsigned long active;
+	unsigned long mask, left;
+	void (**bh)(void);
+
+	sti();
+	bh = bh_base;
+	active = bh_active & bh_mask;
+	for (mask = 1, left = ~0 ; left & active ; bh++,mask += mask,left += left) {
+		if (mask & active) {
+			void (*fn)(void);
+			bh_active &= ~mask;
+			fn = *bh;
+			if (!fn)
+				goto bad_bh;
+			fn();
+		}
+	}
+	return;
+bad_bh:
+	printk ("irq.c:bad bottom half entry %08lx\n", mask);
+}
-- 
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