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src/cpu/ppc/vm/stubGenerator_ppc.cpp
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@@ -1,8 +1,8 @@
/*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2016 SAP SE. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2017, SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -3274,10 +3274,40 @@
__ blr(); // Return to caller.
return start;
}
+
+ // Compute CRC32/CRC32C function.
+ void generate_CRC_updateBytes(const char* name, Register table, bool invertCRC) {
+
+ // arguments to kernel_crc32:
+ const Register crc = R3_ARG1; // Current checksum, preset by caller or result from previous call.
+ const Register data = R4_ARG2; // source byte array
+ const Register dataLen = R5_ARG3; // #bytes to process
+
+ const Register t0 = R2;
+ const Register t1 = R7;
+ const Register t2 = R8;
+ const Register t3 = R9;
+ const Register tc0 = R10;
+ const Register tc1 = R11;
+ const Register tc2 = R12;
+
+ BLOCK_COMMENT("Stub body {");
+ assert_different_registers(crc, data, dataLen, table);
+
+ __ kernel_crc32_1word(crc, data, dataLen, table, t0, t1, t2, t3, tc0, tc1, tc2, table, invertCRC);
+
+ BLOCK_COMMENT("return");
+ __ mr_if_needed(R3_RET, crc); // Updated crc is function result. No copying required (R3_ARG1 == R3_RET).
+ __ blr();
+
+ BLOCK_COMMENT("} Stub body");
+ }
+
+
/**
* Arguments:
*
* Inputs:
* R3_ARG1 - int crc
@@ -3294,18 +3324,18 @@
address generate_CRC32_updateBytes(const char* name) {
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", name);
address start = __ function_entry(); // Remember stub start address (is rtn value).
+ const Register table = R6; // crc table address
+
+#ifdef VM_LITTLE_ENDIAN
// arguments to kernel_crc32:
const Register crc = R3_ARG1; // Current checksum, preset by caller or result from previous call.
const Register data = R4_ARG2; // source byte array
const Register dataLen = R5_ARG3; // #bytes to process
- const Register table = R6; // crc table address
-
-#ifdef VM_LITTLE_ENDIAN
if (VM_Version::has_vpmsumb()) {
const Register constants = R2; // constants address
const Register bconstants = R8; // barret table address
const Register t0 = R9;
@@ -3319,45 +3349,93 @@
StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
StubRoutines::ppc64::generate_load_crc_constants_addr(_masm, constants);
StubRoutines::ppc64::generate_load_crc_barret_constants_addr(_masm, bconstants);
- __ kernel_crc32_1word_vpmsumd(crc, data, dataLen, table, constants, bconstants, t0, t1, t2, t3, t4);
+ __ kernel_crc32_1word_vpmsumd(crc, data, dataLen, table, constants, bconstants, t0, t1, t2, t3, t4, true);
BLOCK_COMMENT("return");
__ mr_if_needed(R3_RET, crc); // Updated crc is function result. No copying required (R3_ARG1 == R3_RET).
__ blr();
BLOCK_COMMENT("} Stub body");
} else
#endif
{
- const Register t0 = R2;
- const Register t1 = R7;
- const Register t2 = R8;
- const Register t3 = R9;
- const Register tc0 = R10;
- const Register tc1 = R11;
- const Register tc2 = R12;
+ StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
+ generate_CRC_updateBytes(name, table, true);
+ }
+
+ return start;
+ }
+
+
+ /**
+ * Arguments:
+ *
+ * Inputs:
+ * R3_ARG1 - int crc
+ * R4_ARG2 - byte* buf
+ * R5_ARG3 - int length (of buffer)
+ *
+ * scratch:
+ * R2, R6-R12
+ *
+ * Ouput:
+ * R3_RET - int crc result
+ */
+ // Compute CRC32C function.
+ address generate_CRC32C_updateBytes(const char* name) {
+ __ align(CodeEntryAlignment);
+ StubCodeMark mark(this, "StubRoutines", name);
+ address start = __ function_entry(); // Remember stub start address (is rtn value).
+
+ const Register table = R6; // crc table address
+
+#if 0 // no vector support yet for CRC32C
+#ifdef VM_LITTLE_ENDIAN
+ // arguments to kernel_crc32:
+ const Register crc = R3_ARG1; // Current checksum, preset by caller or result from previous call.
+ const Register data = R4_ARG2; // source byte array
+ const Register dataLen = R5_ARG3; // #bytes to process
+
+ if (VM_Version::has_vpmsumb()) {
+ const Register constants = R2; // constants address
+ const Register bconstants = R8; // barret table address
+
+ const Register t0 = R9;
+ const Register t1 = R10;
+ const Register t2 = R11;
+ const Register t3 = R12;
+ const Register t4 = R7;
BLOCK_COMMENT("Stub body {");
assert_different_registers(crc, data, dataLen, table);
- StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
+ StubRoutines::ppc64::generate_load_crc32c_table_addr(_masm, table);
+ StubRoutines::ppc64::generate_load_crc32c_constants_addr(_masm, constants);
+ StubRoutines::ppc64::generate_load_crc32c_barret_constants_addr(_masm, bconstants);
- __ kernel_crc32_1word(crc, data, dataLen, table, t0, t1, t2, t3, tc0, tc1, tc2, table);
+ __ kernel_crc32_1word_vpmsumd(crc, data, dataLen, table, constants, bconstants, t0, t1, t2, t3, t4, false);
BLOCK_COMMENT("return");
__ mr_if_needed(R3_RET, crc); // Updated crc is function result. No copying required (R3_ARG1 == R3_RET).
__ blr();
BLOCK_COMMENT("} Stub body");
+ } else
+#endif
+#endif
+ {
+ StubRoutines::ppc64::generate_load_crc32c_table_addr(_masm, table);
+ generate_CRC_updateBytes(name, table, false);
}
return start;
}
+
// Initialization
void generate_initial() {
// Generates all stubs and initializes the entry points
// Entry points that exist in all platforms.
@@ -3381,10 +3459,16 @@
// CRC32 Intrinsics.
if (UseCRC32Intrinsics) {
StubRoutines::_crc_table_adr = (address)StubRoutines::ppc64::_crc_table;
StubRoutines::_updateBytesCRC32 = generate_CRC32_updateBytes("CRC32_updateBytes");
}
+
+ // CRC32C Intrinsics.
+ if (UseCRC32CIntrinsics) {
+ StubRoutines::_crc32c_table_addr = (address)StubRoutines::ppc64::_crc32c_table;
+ StubRoutines::_updateBytesCRC32C = generate_CRC32C_updateBytes("CRC32C_updateBytes");
+ }
}
void generate_all() {
// Generates all stubs and initializes the entry points
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