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-rw-r--r--sysdeps/alpha/soft-fp/local-soft-fp.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/alpha/soft-fp/local-soft-fp.h b/sysdeps/alpha/soft-fp/local-soft-fp.h
new file mode 100644
index 0000000000..e93a2ad064
--- /dev/null
+++ b/sysdeps/alpha/soft-fp/local-soft-fp.h
@@ -0,0 +1,44 @@
+#include <stdlib.h>
+#include <soft-fp.h>
+#include <quad.h>
+
+/* Helpers for the Ots functions which receive long double arguments
+ in two integer registers, and return values in $16+$17. */
+
+#undef _FP_UNPACK_RAW_2
+#define _FP_UNPACK_RAW_2(fs, X, val) \
+ do { \
+ union _FP_UNION_##fs _flo; \
+ _flo.longs.a = val##l; \
+ _flo.longs.b = val##h; \
+ X##_f0 = _flo.bits.frac0; \
+ X##_f1 = _flo.bits.frac1; \
+ X##_e = _flo.bits.exp; \
+ X##_s = _flo.bits.sign; \
+ } while (0)
+
+#undef _FP_PACK_RAW_2
+#define _FP_PACK_RAW_2(fs, val, X) \
+ do { \
+ union _FP_UNION_##fs _flo; \
+ _flo.bits.frac0 = X##_f0; \
+ _flo.bits.frac1 = X##_f1; \
+ _flo.bits.exp = X##_e; \
+ _flo.bits.sign = X##_s; \
+ val##l = _flo.longs.a; \
+ val##h = _flo.longs.b; \
+ } while (0)
+
+#define FP_DECL_RETURN(X) \
+ long X##l, X##h
+
+/* ??? We don't have a real way to tell the compiler that we're wanting
+ to return values in $16+$17. Instead use a volatile asm to make sure
+ that the values are live, and just hope that nothing kills the values
+ in between here and the end of the function. */
+#define FP_RETURN(X) \
+do { \
+ register long r16 __asm__("16") = X##l; \
+ register long r17 __asm__("17") = X##h; \
+ asm volatile ("" : : "r"(r16), "r"(r17)); \
+} while (0)