i386: move math-emu

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/x86/math-emu/div_small.S b/arch/x86/math-emu/div_small.S
new file mode 100644
index 000000000000..47099628fa4c
--- /dev/null
+++ b/arch/x86/math-emu/div_small.S
@@ -0,0 +1,47 @@
+        .file   "div_small.S"
+/*---------------------------------------------------------------------------+
+ |  div_small.S                                                              |
+ |                                                                           |
+ | Divide a 64 bit integer by a 32 bit integer & return remainder.           |
+ |                                                                           |
+ | Copyright (C) 1992,1995                                                   |
+ |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
+ |                       Australia.  E-mail billm@jacobi.maths.monash.edu.au |
+ |                                                                           |
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+
+/*---------------------------------------------------------------------------+
+ |    unsigned long FPU_div_small(unsigned long long *x, unsigned long y)    |
+ +---------------------------------------------------------------------------*/
+
+#include "fpu_emu.h"
+
+.text
+ENTRY(FPU_div_small)
+        pushl   %ebp
+        movl    %esp,%ebp
+
+        pushl   %esi
+
+        movl    PARAM1,%esi     /* pointer to num */
+        movl    PARAM2,%ecx     /* The denominator */
+
+        movl    4(%esi),%eax    /* Get the current num msw */
+        xorl    %edx,%edx
+        divl    %ecx
+
+        movl    %eax,4(%esi)
+
+        movl    (%esi),%eax     /* Get the num lsw */
+        divl    %ecx
+
+        movl    %eax,(%esi)
+
+        movl    %edx,%eax       /* Return the remainder in eax */
+
+        popl    %esi
+
+        leave
+        ret
+