1.1 --- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp Tue Sep 09 19:18:13 2014 +0000
1.2 +++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp Tue Sep 02 12:48:45 2014 -0700
1.3 @@ -3677,6 +3677,70 @@
1.4 return start;
1.5 }
1.6
1.7 +
1.8 + /**
1.9 + * Arguments:
1.10 + *
1.11 + * Input:
1.12 + * c_rarg0 - x address
1.13 + * c_rarg1 - x length
1.14 + * c_rarg2 - y address
1.15 + * c_rarg3 - y lenth
1.16 + * not Win64
1.17 + * c_rarg4 - z address
1.18 + * c_rarg5 - z length
1.19 + * Win64
1.20 + * rsp+40 - z address
1.21 + * rsp+48 - z length
1.22 + */
1.23 + address generate_multiplyToLen() {
1.24 + __ align(CodeEntryAlignment);
1.25 + StubCodeMark mark(this, "StubRoutines", "multiplyToLen");
1.26 +
1.27 + address start = __ pc();
1.28 + // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
1.29 + // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
1.30 + const Register x = rdi;
1.31 + const Register xlen = rax;
1.32 + const Register y = rsi;
1.33 + const Register ylen = rcx;
1.34 + const Register z = r8;
1.35 + const Register zlen = r11;
1.36 +
1.37 + // Next registers will be saved on stack in multiply_to_len().
1.38 + const Register tmp1 = r12;
1.39 + const Register tmp2 = r13;
1.40 + const Register tmp3 = r14;
1.41 + const Register tmp4 = r15;
1.42 + const Register tmp5 = rbx;
1.43 +
1.44 + BLOCK_COMMENT("Entry:");
1.45 + __ enter(); // required for proper stackwalking of RuntimeStub frame
1.46 +
1.47 +#ifndef _WIN64
1.48 + __ movptr(zlen, r9); // Save r9 in r11 - zlen
1.49 +#endif
1.50 + setup_arg_regs(4); // x => rdi, xlen => rsi, y => rdx
1.51 + // ylen => rcx, z => r8, zlen => r11
1.52 + // r9 and r10 may be used to save non-volatile registers
1.53 +#ifdef _WIN64
1.54 + // last 2 arguments (#4, #5) are on stack on Win64
1.55 + __ movptr(z, Address(rsp, 6 * wordSize));
1.56 + __ movptr(zlen, Address(rsp, 7 * wordSize));
1.57 +#endif
1.58 +
1.59 + __ movptr(xlen, rsi);
1.60 + __ movptr(y, rdx);
1.61 + __ multiply_to_len(x, xlen, y, ylen, z, zlen, tmp1, tmp2, tmp3, tmp4, tmp5);
1.62 +
1.63 + restore_arg_regs();
1.64 +
1.65 + __ leave(); // required for proper stackwalking of RuntimeStub frame
1.66 + __ ret(0);
1.67 +
1.68 + return start;
1.69 + }
1.70 +
1.71 #undef __
1.72 #define __ masm->
1.73
1.74 @@ -3917,6 +3981,11 @@
1.75 generate_safefetch("SafeFetchN", sizeof(intptr_t), &StubRoutines::_safefetchN_entry,
1.76 &StubRoutines::_safefetchN_fault_pc,
1.77 &StubRoutines::_safefetchN_continuation_pc);
1.78 +#ifdef COMPILER2
1.79 + if (UseMultiplyToLenIntrinsic) {
1.80 + StubRoutines::_multiplyToLen = generate_multiplyToLen();
1.81 + }
1.82 +#endif
1.83 }
1.84
1.85 public:
