1 files changed, 74 insertions, 0 deletions
diff --git a/i386/i386at/gpl/linux/linux_soft.c b/i386/i386at/gpl/linux/linux_soft.c
new file mode 100644
index 00000000..efcae987
--- /dev/null
+++ b/i386/i386at/gpl/linux/linux_soft.c
@@ -0,0 +1,74 @@
+/*
+ * Linux software interrupts.
+ * Copyright (C) 1995 Shantanu Goel.
+ *
+ * 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; either version 2, or (at your option)
+ * any later version.
+ *
+ * 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ *	linux/kernel/softirq.c
+ *
+ *	Copyright (C) 1992 Linus Torvalds
+ */
+
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+
+/*
+ * Mask of pending interrupts.
+ */
+unsigned long bh_active = 0;
+
+/*
+ * Mask of enabled interrupts.
+ */
+unsigned long bh_mask = 0;
+
+/*
+ * List of software interrupt handlers.
+ */
+struct bh_struct bh_base[32];
+
+
+/*
+ * Software interrupt handler.
+ */
+void
+linux_soft_intr()
+{
+	unsigned long active;
+	unsigned long mask, left;
+	struct bh_struct *bh;
+
+	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->routine;
+			if (fn == 0)
+				goto bad_bh;
+			(*fn)(bh->data);
+		}
+	}
+	return;
+ bad_bh:
+	printf("linux_soft_intr: bad interrupt handler entry 0x%08lx\n", mask);
+}