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.

1 files changed, 57 insertions, 0 deletions

diff --git a/linux/src/include/asm-i386/math_emu.h b/linux/src/include/asm-i386/math_emu.h
new file mode 100644
index 00000000..92083a5d
--- /dev/null
+++ b/linux/src/include/asm-i386/math_emu.h
@@ -0,0 +1,57 @@
+#ifndef _I386_MATH_EMU_H
+#define _I386_MATH_EMU_H
+
+#include <asm/sigcontext.h>
+
+void restore_i387_soft(struct _fpstate *buf);
+struct _fpstate * save_i387_soft(struct _fpstate * buf);
+
+struct fpu_reg {
+	char sign;
+	char tag;
+	long exp;
+	unsigned sigl;
+	unsigned sigh;
+};
+
+
+/* This structure matches the layout of the data saved to the stack
+   following a device-not-present interrupt, part of it saved
+   automatically by the 80386/80486.
+   */
+struct info {
+	long ___orig_eip;
+	long ___ret_from_system_call;
+	long ___ebx;
+	long ___ecx;
+	long ___edx;
+	long ___esi;
+	long ___edi;
+	long ___ebp;
+	long ___eax;
+	long ___ds;
+	long ___es;
+	long ___fs;
+	long ___gs;
+	long ___orig_eax;
+	long ___eip;
+	long ___cs;
+	long ___eflags;
+	long ___esp;
+	long ___ss;
+	long ___vm86_es; /* This and the following only in vm86 mode */
+	long ___vm86_ds;
+	long ___vm86_fs;
+	long ___vm86_gs;
+};
+
+/* Interface for converting data between the emulator format
+ * and the hardware format. Used for core dumping and for
+ * ptrace(2) */
+void hardreg_to_softreg(const char hardreg[10],
+			      struct fpu_reg *soft_reg);
+
+void softreg_to_hardreg(const struct fpu_reg *rp, char d[10],
+			long int control_word);
+
+#endif