Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 87 insertions, 0 deletions

diff --git a/arch/i386/math-emu/shr_Xsig.S b/arch/i386/math-emu/shr_Xsig.S
new file mode 100644
index 000000000000..31cdd118e918
--- /dev/null
+++ b/arch/i386/math-emu/shr_Xsig.S
@@ -0,0 +1,87 @@
+        .file   "shr_Xsig.S"
+/*---------------------------------------------------------------------------+
+ |  shr_Xsig.S                                                               |
+ |                                                                           |
+ | 12 byte right shift function                                              |
+ |                                                                           |
+ | Copyright (C) 1992,1994,1995                                              |
+ |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
+ |                       Australia.  E-mail billm@jacobi.maths.monash.edu.au |
+ |                                                                           |
+ | Call from C as:                                                           |
+ |   void shr_Xsig(Xsig *arg, unsigned nr)                                   |
+ |                                                                           |
+ |   Extended shift right function.                                          |
+ |   Fastest for small shifts.                                               |
+ |   Shifts the 12 byte quantity pointed to by the first arg (arg)           |
+ |   right by the number of bits specified by the second arg (nr).           |
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+
+#include "fpu_emu.h"
+
+.text
+ENTRY(shr_Xsig)
+        push    %ebp
+        movl    %esp,%ebp
+        pushl   %esi
+        movl    PARAM2,%ecx
+        movl    PARAM1,%esi
+        cmpl    $32,%ecx        /* shrd only works for 0..31 bits */
+        jnc     L_more_than_31
+
+/* less than 32 bits */
+        pushl   %ebx
+        movl    (%esi),%eax     /* lsl */
+        movl    4(%esi),%ebx    /* midl */
+        movl    8(%esi),%edx    /* msl */
+        shrd    %cl,%ebx,%eax
+        shrd    %cl,%edx,%ebx
+        shr     %cl,%edx
+        movl    %eax,(%esi)
+        movl    %ebx,4(%esi)
+        movl    %edx,8(%esi)
+        popl    %ebx
+        popl    %esi
+        leave
+        ret
+
+L_more_than_31:
+        cmpl    $64,%ecx
+        jnc     L_more_than_63
+
+        subb    $32,%cl
+        movl    4(%esi),%eax    /* midl */
+        movl    8(%esi),%edx    /* msl */
+        shrd    %cl,%edx,%eax
+        shr     %cl,%edx
+        movl    %eax,(%esi)
+        movl    %edx,4(%esi)
+        movl    $0,8(%esi)
+        popl    %esi
+        leave
+        ret
+
+L_more_than_63:
+        cmpl    $96,%ecx
+        jnc     L_more_than_95
+
+        subb    $64,%cl
+        movl    8(%esi),%eax    /* msl */
+        shr     %cl,%eax
+        xorl    %edx,%edx
+        movl    %eax,(%esi)
+        movl    %edx,4(%esi)
+        movl    %edx,8(%esi)
+        popl    %esi
+        leave
+        ret
+
+L_more_than_95:
+        xorl    %eax,%eax
+        movl    %eax,(%esi)
+        movl    %eax,4(%esi)
+        movl    %eax,8(%esi)
+        popl    %esi
+        leave
+        ret