13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_MACROASSEMBLER_X86_HPP
26 #define CPU_X86_MACROASSEMBLER_X86_HPP
27
28 #include "asm/assembler.hpp"
29 #include "asm/register.hpp"
30 #include "code/vmreg.inline.hpp"
31 #include "compiler/oopMap.hpp"
32 #include "utilities/macros.hpp"
33 #include "runtime/vm_version.hpp"
34 #include "utilities/checkedCast.hpp"
35
36 // MacroAssembler extends Assembler by frequently used macros.
37 //
38 // Instructions for which a 'better' code sequence exists depending
39 // on arguments should also go in here.
40
41 class MacroAssembler: public Assembler {
42 friend class LIR_Assembler;
43 friend class Runtime1; // as_Address()
44
45 public:
46 // Support for VM calls
47 //
48 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
49 // may customize this version by overriding it for its purposes (e.g., to save/restore
50 // additional registers when doing a VM call).
51
52 virtual void call_VM_leaf_base(
53 address entry_point, // the entry point
54 int number_of_arguments // the number of arguments to pop after the call
55 );
77 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
78 // The implementation is only non-empty for the InterpreterMacroAssembler,
79 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
80 virtual void check_and_handle_popframe();
81 virtual void check_and_handle_earlyret();
82
83 Address as_Address(AddressLiteral adr);
84 Address as_Address(ArrayAddress adr, Register rscratch);
85
86 // Support for null-checks
87 //
88 // Generates code that causes a null OS exception if the content of reg is null.
89 // If the accessed location is M[reg + offset] and the offset is known, provide the
90 // offset. No explicit code generation is needed if the offset is within a certain
91 // range (0 <= offset <= page_size).
92
93 void null_check(Register reg, int offset = -1);
94 static bool needs_explicit_null_check(intptr_t offset);
95 static bool uses_implicit_null_check(void* address);
96
97 // Required platform-specific helpers for Label::patch_instructions.
98 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
99 void pd_patch_instruction(address branch, address target, const char* file, int line) {
100 unsigned char op = branch[0];
101 assert(op == 0xE8 /* call */ ||
102 op == 0xE9 /* jmp */ ||
103 op == 0xEB /* short jmp */ ||
104 (op & 0xF0) == 0x70 /* short jcc */ ||
105 (op == 0x0F && (branch[1] & 0xF0) == 0x80) /* jcc */ ||
106 (op == 0xC7 && branch[1] == 0xF8) /* xbegin */ ||
107 (op == 0x8D) /* lea */,
108 "Invalid opcode at patch point");
109
110 if (op == 0xEB || (op & 0xF0) == 0x70) {
111 // short offset operators (jmp and jcc)
112 char* disp = (char*) &branch[1];
113 int imm8 = checked_cast<int>(target - (address) &disp[1]);
114 guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset at %s:%d",
115 file == nullptr ? "<null>" : file, line);
116 *disp = (char)imm8;
332 void resolve_global_jobject(Register value, Register tmp);
333
334 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
335 void c2bool(Register x);
336
337 // C++ bool manipulation
338
339 void movbool(Register dst, Address src);
340 void movbool(Address dst, bool boolconst);
341 void movbool(Address dst, Register src);
342 void testbool(Register dst);
343
344 void resolve_oop_handle(Register result, Register tmp);
345 void resolve_weak_handle(Register result, Register tmp);
346 void load_mirror(Register mirror, Register method, Register tmp);
347 void load_method_holder_cld(Register rresult, Register rmethod);
348
349 void load_method_holder(Register holder, Register method);
350
351 // oop manipulations
352 void load_narrow_klass_compact(Register dst, Register src);
353 void load_narrow_klass(Register dst, Register src);
354 void load_klass(Register dst, Register src, Register tmp);
355 void store_klass(Register dst, Register src, Register tmp);
356
357 // Compares the narrow Klass pointer of an object to a given narrow Klass.
358 void cmp_klass(Register klass, Register obj, Register tmp);
359
360 // Compares the Klass pointer of two objects obj1 and obj2. Result is in the condition flags.
361 // Uses tmp1 and tmp2 as temporary registers.
362 void cmp_klasses_from_objects(Register obj1, Register obj2, Register tmp1, Register tmp2);
363
364 void access_load_at(BasicType type, DecoratorSet decorators, Register dst, Address src,
365 Register tmp1);
366 void access_store_at(BasicType type, DecoratorSet decorators, Address dst, Register val,
367 Register tmp1, Register tmp2, Register tmp3);
368
369 void load_heap_oop(Register dst, Address src, Register tmp1 = noreg, DecoratorSet decorators = 0);
370 void load_heap_oop_not_null(Register dst, Address src, Register tmp1 = noreg, DecoratorSet decorators = 0);
371 void store_heap_oop(Address dst, Register val, Register tmp1 = noreg,
372 Register tmp2 = noreg, Register tmp3 = noreg, DecoratorSet decorators = 0);
373
374 // Used for storing null. All other oop constants should be
375 // stored using routines that take a jobject.
376 void store_heap_oop_null(Address dst);
377
378 void store_klass_gap(Register dst, Register src);
379
380 // This dummy is to prevent a call to store_heap_oop from
381 // converting a zero (like null) into a Register by giving
382 // the compiler two choices it can't resolve
383
384 void store_heap_oop(Address dst, void* dummy);
385
386 void encode_heap_oop(Register r);
387 void decode_heap_oop(Register r);
388 void encode_heap_oop_not_null(Register r);
389 void decode_heap_oop_not_null(Register r);
390 void encode_heap_oop_not_null(Register dst, Register src);
391 void decode_heap_oop_not_null(Register dst, Register src);
392
393 void set_narrow_oop(Register dst, jobject obj);
394 void set_narrow_oop(Address dst, jobject obj);
395 void cmp_narrow_oop(Register dst, jobject obj);
396 void cmp_narrow_oop(Address dst, jobject obj);
397
505 void pop_call_clobbered_registers_except(RegSet exclude, bool restore_fpu = true);
506
507 void push_call_clobbered_registers(bool save_fpu = true) {
508 push_call_clobbered_registers_except(RegSet(), save_fpu);
509 }
510 void pop_call_clobbered_registers(bool restore_fpu = true) {
511 pop_call_clobbered_registers_except(RegSet(), restore_fpu);
512 }
513
514 // allocation
515 void tlab_allocate(
516 Register obj, // result: pointer to object after successful allocation
517 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
518 int con_size_in_bytes, // object size in bytes if known at compile time
519 Register t1, // temp register
520 Register t2, // temp register
521 Label& slow_case // continuation point if fast allocation fails
522 );
523 void zero_memory(Register address, Register length_in_bytes, int offset_in_bytes, Register temp);
524
525 void population_count(Register dst, Register src, Register scratch1, Register scratch2);
526
527 // interface method calling
528 void lookup_interface_method(Register recv_klass,
529 Register intf_klass,
530 RegisterOrConstant itable_index,
531 Register method_result,
532 Register scan_temp,
533 Label& no_such_interface,
534 bool return_method = true);
535
536 void lookup_interface_method_stub(Register recv_klass,
537 Register holder_klass,
538 Register resolved_klass,
539 Register method_result,
540 Register scan_temp,
541 Register temp_reg2,
542 Register receiver,
543 int itable_index,
544 Label& L_no_such_interface);
753 // operands. In general the names are modified to avoid hiding the instruction in Assembler
754 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
755 // here in MacroAssembler. The major exception to this rule is call
756
757 // Arithmetics
758
759
760 void addptr(Address dst, int32_t src) { addq(dst, src); }
761 void addptr(Address dst, Register src);
762
763 void addptr(Register dst, Address src) { addq(dst, src); }
764 void addptr(Register dst, int32_t src);
765 void addptr(Register dst, Register src);
766 void addptr(Register dst, RegisterOrConstant src) {
767 if (src.is_constant()) addptr(dst, checked_cast<int>(src.as_constant()));
768 else addptr(dst, src.as_register());
769 }
770
771 void andptr(Register dst, int32_t src);
772 void andptr(Register src1, Register src2) { andq(src1, src2); }
773
774 using Assembler::andq;
775 void andq(Register dst, AddressLiteral src, Register rscratch = noreg);
776
777 void cmp8(AddressLiteral src1, int imm, Register rscratch = noreg);
778
779 // renamed to drag out the casting of address to int32_t/intptr_t
780 void cmp32(Register src1, int32_t imm);
781
782 void cmp32(AddressLiteral src1, int32_t imm, Register rscratch = noreg);
783 // compare reg - mem, or reg - &mem
784 void cmp32(Register src1, AddressLiteral src2, Register rscratch = noreg);
785
786 void cmp32(Register src1, Address src2);
787
788 void cmpoop(Register src1, Register src2);
789 void cmpoop(Register src1, Address src2);
790 void cmpoop(Register dst, jobject obj, Register rscratch);
791
792 // NOTE src2 must be the lval. This is NOT an mem-mem compare
1913 void movdl(XMMRegister dst, AddressLiteral src, Register rscratch = noreg);
1914
1915 using Assembler::movq;
1916 void movq(XMMRegister dst, AddressLiteral src, Register rscratch = noreg);
1917
1918 // Can push value or effective address
1919 void pushptr(AddressLiteral src, Register rscratch);
1920
1921 void pushptr(Address src) { pushq(src); }
1922 void popptr(Address src) { popq(src); }
1923
1924 void pushoop(jobject obj, Register rscratch);
1925 void pushklass(Metadata* obj, Register rscratch);
1926
1927 // sign extend as need a l to ptr sized element
1928 void movl2ptr(Register dst, Address src) { movslq(dst, src); }
1929 void movl2ptr(Register dst, Register src) { movslq(dst, src); }
1930
1931
1932 public:
1933 // clear memory of size 'cnt' qwords, starting at 'base';
1934 // if 'is_large' is set, do not try to produce short loop
1935 void clear_mem(Register base, Register cnt, Register rtmp, XMMRegister xtmp, bool is_large, KRegister mask=knoreg);
1936
1937 // clear memory initialization sequence for constant size;
1938 void clear_mem(Register base, int cnt, Register rtmp, XMMRegister xtmp, KRegister mask=knoreg);
1939
1940 // clear memory of size 'cnt' qwords, starting at 'base' using XMM/YMM registers
1941 void xmm_clear_mem(Register base, Register cnt, Register rtmp, XMMRegister xtmp, KRegister mask=knoreg);
1942
1943 // Fill primitive arrays
1944 void generate_fill(BasicType t, bool aligned,
1945 Register to, Register value, Register count,
1946 Register rtmp, XMMRegister xtmp);
1947
1948 void encode_iso_array(Register src, Register dst, Register len,
1949 XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3,
1950 XMMRegister tmp4, Register tmp5, Register result, bool ascii);
1951
1952 void add2_with_carry(Register dest_hi, Register dest_lo, Register src1, Register src2);
1953 void multiply_64_x_64_loop(Register x, Register xstart, Register x_xstart,
1954 Register y, Register y_idx, Register z,
1955 Register carry, Register product,
|
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_MACROASSEMBLER_X86_HPP
26 #define CPU_X86_MACROASSEMBLER_X86_HPP
27
28 #include "asm/assembler.hpp"
29 #include "asm/register.hpp"
30 #include "code/vmreg.inline.hpp"
31 #include "compiler/oopMap.hpp"
32 #include "utilities/macros.hpp"
33 #include "runtime/signature.hpp"
34 #include "runtime/vm_version.hpp"
35 #include "utilities/checkedCast.hpp"
36
37 class ciInlineKlass;
38
39 // MacroAssembler extends Assembler by frequently used macros.
40 //
41 // Instructions for which a 'better' code sequence exists depending
42 // on arguments should also go in here.
43
44 class MacroAssembler: public Assembler {
45 friend class LIR_Assembler;
46 friend class Runtime1; // as_Address()
47
48 public:
49 // Support for VM calls
50 //
51 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
52 // may customize this version by overriding it for its purposes (e.g., to save/restore
53 // additional registers when doing a VM call).
54
55 virtual void call_VM_leaf_base(
56 address entry_point, // the entry point
57 int number_of_arguments // the number of arguments to pop after the call
58 );
80 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
81 // The implementation is only non-empty for the InterpreterMacroAssembler,
82 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
83 virtual void check_and_handle_popframe();
84 virtual void check_and_handle_earlyret();
85
86 Address as_Address(AddressLiteral adr);
87 Address as_Address(ArrayAddress adr, Register rscratch);
88
89 // Support for null-checks
90 //
91 // Generates code that causes a null OS exception if the content of reg is null.
92 // If the accessed location is M[reg + offset] and the offset is known, provide the
93 // offset. No explicit code generation is needed if the offset is within a certain
94 // range (0 <= offset <= page_size).
95
96 void null_check(Register reg, int offset = -1);
97 static bool needs_explicit_null_check(intptr_t offset);
98 static bool uses_implicit_null_check(void* address);
99
100 // markWord tests, kills markWord reg
101 void test_markword_is_inline_type(Register markword, Label& is_inline_type);
102
103 // inlineKlass queries, kills temp_reg
104 void test_oop_is_not_inline_type(Register object, Register tmp, Label& not_inline_type, bool can_be_null = true);
105
106 void test_field_is_null_free_inline_type(Register flags, Register temp_reg, Label& is_null_free);
107 void test_field_is_not_null_free_inline_type(Register flags, Register temp_reg, Label& not_null_free);
108 void test_field_is_flat(Register flags, Register temp_reg, Label& is_flat);
109
110 // Check oops for special arrays, i.e. flat arrays and/or null-free arrays
111 void test_oop_prototype_bit(Register oop, Register temp_reg, int32_t test_bit, bool jmp_set, Label& jmp_label);
112 void test_flat_array_oop(Register oop, Register temp_reg, Label& is_flat_array);
113 void test_non_flat_array_oop(Register oop, Register temp_reg, Label& is_non_flat_array);
114 void test_null_free_array_oop(Register oop, Register temp_reg, Label& is_null_free_array);
115 void test_non_null_free_array_oop(Register oop, Register temp_reg, Label& is_non_null_free_array);
116
117 // Check array klass layout helper for flat or null-free arrays...
118 void test_flat_array_layout(Register lh, Label& is_flat_array);
119
120 // Required platform-specific helpers for Label::patch_instructions.
121 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
122 void pd_patch_instruction(address branch, address target, const char* file, int line) {
123 unsigned char op = branch[0];
124 assert(op == 0xE8 /* call */ ||
125 op == 0xE9 /* jmp */ ||
126 op == 0xEB /* short jmp */ ||
127 (op & 0xF0) == 0x70 /* short jcc */ ||
128 (op == 0x0F && (branch[1] & 0xF0) == 0x80) /* jcc */ ||
129 (op == 0xC7 && branch[1] == 0xF8) /* xbegin */ ||
130 (op == 0x8D) /* lea */,
131 "Invalid opcode at patch point");
132
133 if (op == 0xEB || (op & 0xF0) == 0x70) {
134 // short offset operators (jmp and jcc)
135 char* disp = (char*) &branch[1];
136 int imm8 = checked_cast<int>(target - (address) &disp[1]);
137 guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset at %s:%d",
138 file == nullptr ? "<null>" : file, line);
139 *disp = (char)imm8;
355 void resolve_global_jobject(Register value, Register tmp);
356
357 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
358 void c2bool(Register x);
359
360 // C++ bool manipulation
361
362 void movbool(Register dst, Address src);
363 void movbool(Address dst, bool boolconst);
364 void movbool(Address dst, Register src);
365 void testbool(Register dst);
366
367 void resolve_oop_handle(Register result, Register tmp);
368 void resolve_weak_handle(Register result, Register tmp);
369 void load_mirror(Register mirror, Register method, Register tmp);
370 void load_method_holder_cld(Register rresult, Register rmethod);
371
372 void load_method_holder(Register holder, Register method);
373
374 // oop manipulations
375
376 // Load oopDesc._metadata without decode (useful for direct Klass* compare from oops)
377 void load_metadata(Register dst, Register src);
378 void load_narrow_klass_compact(Register dst, Register src);
379 void load_narrow_klass(Register dst, Register src);
380 void load_klass(Register dst, Register src, Register tmp);
381 void store_klass(Register dst, Register src, Register tmp);
382
383 // Compares the narrow Klass pointer of an object to a given narrow Klass.
384 void cmp_klass(Register klass, Register obj, Register tmp);
385
386 // Compares the Klass pointer of two objects obj1 and obj2. Result is in the condition flags.
387 // Uses tmp1 and tmp2 as temporary registers.
388 void cmp_klasses_from_objects(Register obj1, Register obj2, Register tmp1, Register tmp2);
389
390 void access_load_at(BasicType type, DecoratorSet decorators, Register dst, Address src,
391 Register tmp1);
392 void access_store_at(BasicType type, DecoratorSet decorators, Address dst, Register val,
393 Register tmp1, Register tmp2, Register tmp3);
394
395 void flat_field_copy(DecoratorSet decorators, Register src, Register dst, Register inline_layout_info);
396
397 // inline type data payload offsets...
398 void payload_offset(Register inline_klass, Register offset);
399 void payload_addr(Register oop, Register data, Register inline_klass);
400
401 void load_heap_oop(Register dst, Address src, Register tmp1 = noreg, DecoratorSet decorators = 0);
402 void load_heap_oop_not_null(Register dst, Address src, Register tmp1 = noreg, DecoratorSet decorators = 0);
403 void store_heap_oop(Address dst, Register val, Register tmp1 = noreg,
404 Register tmp2 = noreg, Register tmp3 = noreg, DecoratorSet decorators = 0);
405
406 // Used for storing null. All other oop constants should be
407 // stored using routines that take a jobject.
408 void store_heap_oop_null(Address dst);
409
410 void load_prototype_header(Register dst, Register src, Register tmp);
411
412 void store_klass_gap(Register dst, Register src);
413
414 // This dummy is to prevent a call to store_heap_oop from
415 // converting a zero (like null) into a Register by giving
416 // the compiler two choices it can't resolve
417
418 void store_heap_oop(Address dst, void* dummy);
419
420 void encode_heap_oop(Register r);
421 void decode_heap_oop(Register r);
422 void encode_heap_oop_not_null(Register r);
423 void decode_heap_oop_not_null(Register r);
424 void encode_heap_oop_not_null(Register dst, Register src);
425 void decode_heap_oop_not_null(Register dst, Register src);
426
427 void set_narrow_oop(Register dst, jobject obj);
428 void set_narrow_oop(Address dst, jobject obj);
429 void cmp_narrow_oop(Register dst, jobject obj);
430 void cmp_narrow_oop(Address dst, jobject obj);
431
539 void pop_call_clobbered_registers_except(RegSet exclude, bool restore_fpu = true);
540
541 void push_call_clobbered_registers(bool save_fpu = true) {
542 push_call_clobbered_registers_except(RegSet(), save_fpu);
543 }
544 void pop_call_clobbered_registers(bool restore_fpu = true) {
545 pop_call_clobbered_registers_except(RegSet(), restore_fpu);
546 }
547
548 // allocation
549 void tlab_allocate(
550 Register obj, // result: pointer to object after successful allocation
551 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
552 int con_size_in_bytes, // object size in bytes if known at compile time
553 Register t1, // temp register
554 Register t2, // temp register
555 Label& slow_case // continuation point if fast allocation fails
556 );
557 void zero_memory(Register address, Register length_in_bytes, int offset_in_bytes, Register temp);
558
559 void inline_layout_info(Register klass, Register index, Register layout_info);
560
561 void population_count(Register dst, Register src, Register scratch1, Register scratch2);
562
563 // interface method calling
564 void lookup_interface_method(Register recv_klass,
565 Register intf_klass,
566 RegisterOrConstant itable_index,
567 Register method_result,
568 Register scan_temp,
569 Label& no_such_interface,
570 bool return_method = true);
571
572 void lookup_interface_method_stub(Register recv_klass,
573 Register holder_klass,
574 Register resolved_klass,
575 Register method_result,
576 Register scan_temp,
577 Register temp_reg2,
578 Register receiver,
579 int itable_index,
580 Label& L_no_such_interface);
789 // operands. In general the names are modified to avoid hiding the instruction in Assembler
790 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
791 // here in MacroAssembler. The major exception to this rule is call
792
793 // Arithmetics
794
795
796 void addptr(Address dst, int32_t src) { addq(dst, src); }
797 void addptr(Address dst, Register src);
798
799 void addptr(Register dst, Address src) { addq(dst, src); }
800 void addptr(Register dst, int32_t src);
801 void addptr(Register dst, Register src);
802 void addptr(Register dst, RegisterOrConstant src) {
803 if (src.is_constant()) addptr(dst, checked_cast<int>(src.as_constant()));
804 else addptr(dst, src.as_register());
805 }
806
807 void andptr(Register dst, int32_t src);
808 void andptr(Register src1, Register src2) { andq(src1, src2); }
809 void andptr(Register dst, Address src) { andq(dst, src); }
810
811 using Assembler::andq;
812 void andq(Register dst, AddressLiteral src, Register rscratch = noreg);
813
814 void cmp8(AddressLiteral src1, int imm, Register rscratch = noreg);
815
816 // renamed to drag out the casting of address to int32_t/intptr_t
817 void cmp32(Register src1, int32_t imm);
818
819 void cmp32(AddressLiteral src1, int32_t imm, Register rscratch = noreg);
820 // compare reg - mem, or reg - &mem
821 void cmp32(Register src1, AddressLiteral src2, Register rscratch = noreg);
822
823 void cmp32(Register src1, Address src2);
824
825 void cmpoop(Register src1, Register src2);
826 void cmpoop(Register src1, Address src2);
827 void cmpoop(Register dst, jobject obj, Register rscratch);
828
829 // NOTE src2 must be the lval. This is NOT an mem-mem compare
1950 void movdl(XMMRegister dst, AddressLiteral src, Register rscratch = noreg);
1951
1952 using Assembler::movq;
1953 void movq(XMMRegister dst, AddressLiteral src, Register rscratch = noreg);
1954
1955 // Can push value or effective address
1956 void pushptr(AddressLiteral src, Register rscratch);
1957
1958 void pushptr(Address src) { pushq(src); }
1959 void popptr(Address src) { popq(src); }
1960
1961 void pushoop(jobject obj, Register rscratch);
1962 void pushklass(Metadata* obj, Register rscratch);
1963
1964 // sign extend as need a l to ptr sized element
1965 void movl2ptr(Register dst, Address src) { movslq(dst, src); }
1966 void movl2ptr(Register dst, Register src) { movslq(dst, src); }
1967
1968
1969 public:
1970 // Inline type specific methods
1971 #include "asm/macroAssembler_common.hpp"
1972
1973 // clear memory of size 'cnt' qwords, starting at 'base';
1974 // if 'is_large' is set, do not try to produce short loop
1975 void clear_mem(Register base, Register cnt, Register val, XMMRegister xtmp, bool is_large, bool word_copy_only, KRegister mask=knoreg);
1976
1977 // clear memory initialization sequence for constant size;
1978 void clear_mem(Register base, int cnt, Register rtmp, XMMRegister xtmp, KRegister mask=knoreg);
1979
1980 // clear memory of size 'cnt' qwords, starting at 'base' using XMM/YMM registers
1981 void xmm_clear_mem(Register base, Register cnt, Register rtmp, XMMRegister xtmp, KRegister mask=knoreg);
1982
1983 // Fill primitive arrays
1984 void generate_fill(BasicType t, bool aligned,
1985 Register to, Register value, Register count,
1986 Register rtmp, XMMRegister xtmp);
1987
1988 void encode_iso_array(Register src, Register dst, Register len,
1989 XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3,
1990 XMMRegister tmp4, Register tmp5, Register result, bool ascii);
1991
1992 void add2_with_carry(Register dest_hi, Register dest_lo, Register src1, Register src2);
1993 void multiply_64_x_64_loop(Register x, Register xstart, Register x_xstart,
1994 Register y, Register y_idx, Register z,
1995 Register carry, Register product,
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