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authorIngo Molnar <mingo@elte.hu>2008-07-29 11:54:24 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-29 11:54:24 +0200
commit3825c9e8d01e4310c40a3903a354c433c32a7b6f (patch)
tree87c94a8076bbb38bd2cf20ab9bc23d6f74f6a0a8 /arch/sparc/include/asm/visasm.h
parent5d7b605245b1aa1a9cd6549b1f57d69273eb0c37 (diff)
parent6e86841d05f371b5b9b86ce76c02aaee83352298 (diff)
downloadop-kernel-dev-3825c9e8d01e4310c40a3903a354c433c32a7b6f.zip
op-kernel-dev-3825c9e8d01e4310c40a3903a354c433c32a7b6f.tar.gz
Merge commit 'v2.6.27-rc1' into x86/microcode
Conflicts: arch/x86/kernel/microcode.c Manual resolutions: arch/x86/kernel/microcode_amd.c arch/x86/kernel/microcode_intel.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sparc/include/asm/visasm.h')
-rw-r--r--arch/sparc/include/asm/visasm.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/visasm.h b/arch/sparc/include/asm/visasm.h
new file mode 100644
index 0000000..de797b9
--- /dev/null
+++ b/arch/sparc/include/asm/visasm.h
@@ -0,0 +1,62 @@
+#ifndef _SPARC64_VISASM_H
+#define _SPARC64_VISASM_H
+
+/* visasm.h: FPU saving macros for VIS routines
+ *
+ * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+
+/* Clobbers %o5, %g1, %g2, %g3, %g7, %icc, %xcc */
+
+#define VISEntry \
+ rd %fprs, %o5; \
+ andcc %o5, (FPRS_FEF|FPRS_DU), %g0; \
+ be,pt %icc, 297f; \
+ sethi %hi(297f), %g7; \
+ sethi %hi(VISenter), %g1; \
+ jmpl %g1 + %lo(VISenter), %g0; \
+ or %g7, %lo(297f), %g7; \
+297: wr %g0, FPRS_FEF, %fprs; \
+
+#define VISExit \
+ wr %g0, 0, %fprs;
+
+/* Clobbers %o5, %g1, %g2, %g3, %g7, %icc, %xcc.
+ * Must preserve %o5 between VISEntryHalf and VISExitHalf */
+
+#define VISEntryHalf \
+ rd %fprs, %o5; \
+ andcc %o5, FPRS_FEF, %g0; \
+ be,pt %icc, 297f; \
+ sethi %hi(298f), %g7; \
+ sethi %hi(VISenterhalf), %g1; \
+ jmpl %g1 + %lo(VISenterhalf), %g0; \
+ or %g7, %lo(298f), %g7; \
+ clr %o5; \
+297: wr %o5, FPRS_FEF, %fprs; \
+298:
+
+#define VISExitHalf \
+ wr %o5, 0, %fprs;
+
+#ifndef __ASSEMBLY__
+static inline void save_and_clear_fpu(void) {
+ __asm__ __volatile__ (
+" rd %%fprs, %%o5\n"
+" andcc %%o5, %0, %%g0\n"
+" be,pt %%icc, 299f\n"
+" sethi %%hi(298f), %%g7\n"
+" sethi %%hi(VISenter), %%g1\n"
+" jmpl %%g1 + %%lo(VISenter), %%g0\n"
+" or %%g7, %%lo(298f), %%g7\n"
+" 298: wr %%g0, 0, %%fprs\n"
+" 299:\n"
+" " : : "i" (FPRS_FEF|FPRS_DU) :
+ "o5", "g1", "g2", "g3", "g7", "cc");
+}
+#endif
+
+#endif /* _SPARC64_ASI_H */
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