patch-r262261-llvm-r200509-sparc.diff revision 269012 
1Pull in r200509 from upstream llvm trunk (by Venkatraman Govindaraju):
2
3  [Sparc] Save and restore float registers that may be used for parameter passing.
4
5Introduced here: http://svnweb.freebsd.org/changeset/base/262261
6
7Index: lib/Target/Sparc/SparcJITInfo.cpp
8===================================================================
9--- lib/Target/Sparc/SparcJITInfo.cpp
10+++ lib/Target/Sparc/SparcJITInfo.cpp
11@@ -28,6 +28,13 @@ extern "C" void SparcCompilationCallback();
12 
13 extern "C" {
14 #if defined (__sparc__)
15+
16+#if defined(__arch64__)
17+#define FRAME_PTR(X) #X "+2047"
18+#else
19+#define FRAME_PTR(X) #X
20+#endif
21+
22   asm(
23       ".text\n"
24       "\t.align 4\n"
25@@ -34,11 +41,46 @@ extern "C" {
26       "\t.global SparcCompilationCallback\n"
27       "\t.type SparcCompilationCallback, #function\n"
28       "SparcCompilationCallback:\n"
29-      // Save current register window.
30-      "\tsave %sp, -192, %sp\n"
31+      // Save current register window and create stack.
32+      // 128 (save area) + 6*8 (for arguments) + 16*8 (for float regfile) = 304
33+      "\tsave %sp, -304, %sp\n"
34+      // save float regfile to the stack.
35+      "\tstd %f0,  [" FRAME_PTR(%fp) "-0]\n"
36+      "\tstd %f2,  [" FRAME_PTR(%fp) "-8]\n"
37+      "\tstd %f4,  [" FRAME_PTR(%fp) "-16]\n"
38+      "\tstd %f6,  [" FRAME_PTR(%fp) "-24]\n"
39+      "\tstd %f8,  [" FRAME_PTR(%fp) "-32]\n"
40+      "\tstd %f10, [" FRAME_PTR(%fp) "-40]\n"
41+      "\tstd %f12, [" FRAME_PTR(%fp) "-48]\n"
42+      "\tstd %f14, [" FRAME_PTR(%fp) "-56]\n"
43+      "\tstd %f16, [" FRAME_PTR(%fp) "-64]\n"
44+      "\tstd %f18, [" FRAME_PTR(%fp) "-72]\n"
45+      "\tstd %f20, [" FRAME_PTR(%fp) "-80]\n"
46+      "\tstd %f22, [" FRAME_PTR(%fp) "-88]\n"
47+      "\tstd %f24, [" FRAME_PTR(%fp) "-96]\n"
48+      "\tstd %f26, [" FRAME_PTR(%fp) "-104]\n"
49+      "\tstd %f28, [" FRAME_PTR(%fp) "-112]\n"
50+      "\tstd %f30, [" FRAME_PTR(%fp) "-120]\n"
51       // stubaddr is in %g1.
52       "\tcall SparcCompilationCallbackC\n"
53       "\t  mov %g1, %o0\n"
54+      // restore float regfile from the stack.
55+      "\tldd [" FRAME_PTR(%fp) "-0],   %f0\n"
56+      "\tldd [" FRAME_PTR(%fp) "-8],   %f2\n"
57+      "\tldd [" FRAME_PTR(%fp) "-16],  %f4\n"
58+      "\tldd [" FRAME_PTR(%fp) "-24],  %f6\n"
59+      "\tldd [" FRAME_PTR(%fp) "-32],  %f8\n"
60+      "\tldd [" FRAME_PTR(%fp) "-40],  %f10\n"
61+      "\tldd [" FRAME_PTR(%fp) "-48],  %f12\n"
62+      "\tldd [" FRAME_PTR(%fp) "-56],  %f14\n"
63+      "\tldd [" FRAME_PTR(%fp) "-64],  %f16\n"
64+      "\tldd [" FRAME_PTR(%fp) "-72],  %f18\n"
65+      "\tldd [" FRAME_PTR(%fp) "-80],  %f20\n"
66+      "\tldd [" FRAME_PTR(%fp) "-88],  %f22\n"
67+      "\tldd [" FRAME_PTR(%fp) "-96],  %f24\n"
68+      "\tldd [" FRAME_PTR(%fp) "-104], %f26\n"
69+      "\tldd [" FRAME_PTR(%fp) "-112], %f28\n"
70+      "\tldd [" FRAME_PTR(%fp) "-120], %f30\n"
71       // restore original register window and
72       // copy %o0 to %g1
73       "\trestore %o0, 0, %g1\n"
74