--- a/hotspot/src/cpu/x86/vm/stubGenerator_x86_64.cpp Wed Sep 30 04:35:39 2015 -0400
+++ b/hotspot/src/cpu/x86/vm/stubGenerator_x86_64.cpp Mon Oct 05 20:02:40 2015 -0700
@@ -3039,19 +3039,6 @@
__ ret(0);
}
{
- StubCodeMark mark(this, "StubRoutines", "exp");
- StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc();
-
- __ subq(rsp, 8);
- __ movdbl(Address(rsp, 0), xmm0);
- __ fld_d(Address(rsp, 0));
- __ exp_with_fallback(0);
- __ fstp_d(Address(rsp, 0));
- __ movdbl(xmm0, Address(rsp, 0));
- __ addq(rsp, 8);
- __ ret(0);
- }
- {
StubCodeMark mark(this, "StubRoutines", "pow");
StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc();
@@ -4180,6 +4167,44 @@
return start;
}
+ address generate_libmExp() {
+ address start = __ pc();
+
+ const XMMRegister x0 = xmm0;
+ const XMMRegister x1 = xmm1;
+ const XMMRegister x2 = xmm2;
+ const XMMRegister x3 = xmm3;
+
+ const XMMRegister x4 = xmm4;
+ const XMMRegister x5 = xmm5;
+ const XMMRegister x6 = xmm6;
+ const XMMRegister x7 = xmm7;
+
+ const Register tmp = r11;
+
+ BLOCK_COMMENT("Entry:");
+ __ enter(); // required for proper stackwalking of RuntimeStub frame
+
+#ifdef _WIN64
+ // save the xmm registers which must be preserved 6-7
+ __ movdqu(xmm_save(6), as_XMMRegister(6));
+ __ movdqu(xmm_save(7), as_XMMRegister(7));
+#endif
+ __ fast_exp(x0, x1, x2, x3, x4, x5, x6, x7, rax, rcx, rdx, tmp);
+
+#ifdef _WIN64
+ // restore xmm regs belonging to calling function
+ __ movdqu(as_XMMRegister(6), xmm_save(6));
+ __ movdqu(as_XMMRegister(7), xmm_save(7));
+#endif
+
+ __ leave(); // required for proper stackwalking of RuntimeStub frame
+ __ ret(0);
+
+ return start;
+
+ }
+
#undef __
#define __ masm->
@@ -4367,6 +4392,7 @@
StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table;
StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
}
+ StubRoutines::_dexp = generate_libmExp();
}
void generate_all() {