graal-jvmci-8: src/cpu/x86/vm/assembler

comparison src/cpu/x86/vm/assembler_x86.cpp @ 7430:d02120b7a34f

8004250: replace AbstractAssembler a_byte/a_long with emit_int8/emit_int32 Reviewed-by: jrose, kvn, twisti Contributed-by: Morris Meyer <morris.meyer@oracle.com>

author	twisti
date	Thu, 20 Dec 2012 18:53:44 -0800
parents	2c7f594145dc
children	00af3a3a8df4

comparison

equal deleted inserted replaced

-:a46457045d66
+:d02120b7a34f
 void Assembler::emit_arith_b(int op1, int op2, Register dst, int imm8) {
 assert(dst->has_byte_register(), "must have byte register");
 assert(isByte(op1) && isByte(op2), "wrong opcode");
 assert(isByte(imm8), "not a byte");
 assert((op1 & 0x01) == 0, "should be 8bit operation");
-emit_byte(op1);
+emit_int8(op1);
-emit_byte(op2 | encode(dst));
+emit_int8(op2 | encode(dst));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::emit_arith(int op1, int op2, Register dst, int32_t imm32) {
 assert(isByte(op1) && isByte(op2), "wrong opcode");
 assert((op1 & 0x01) == 1, "should be 32bit operation");
 assert((op1 & 0x02) == 0, "sign-extension bit should not be set");
 if (is8bit(imm32)) {
-emit_byte(op1 | 0x02); // set sign bit
+emit_int8(op1 | 0x02); // set sign bit
-emit_byte(op2 | encode(dst));
+emit_int8(op2 | encode(dst));
-emit_byte(imm32 & 0xFF);
+emit_int8(imm32 & 0xFF);
 } else {
-emit_byte(op1);
+emit_int8(op1);
-emit_byte(op2 | encode(dst));
+emit_int8(op2 | encode(dst));
 emit_long(imm32);
 }
 }
 // Force generation of a 4 byte immediate value even if it fits into 8bit
 void Assembler::emit_arith_imm32(int op1, int op2, Register dst, int32_t imm32) {
 assert(isByte(op1) && isByte(op2), "wrong opcode");
 assert((op1 & 0x01) == 1, "should be 32bit operation");
 assert((op1 & 0x02) == 0, "sign-extension bit should not be set");
-emit_byte(op1);
+emit_int8(op1);
-emit_byte(op2 | encode(dst));
+emit_int8(op2 | encode(dst));
 emit_long(imm32);
 }
 // immediate-to-memory forms
 void Assembler::emit_arith_operand(int op1, Register rm, Address adr, int32_t imm32) {
 assert((op1 & 0x01) == 1, "should be 32bit operation");
 assert((op1 & 0x02) == 0, "sign-extension bit should not be set");
 if (is8bit(imm32)) {
-emit_byte(op1 | 0x02); // set sign bit
+emit_int8(op1 | 0x02); // set sign bit
 emit_operand(rm, adr, 1);
-emit_byte(imm32 & 0xFF);
+emit_int8(imm32 & 0xFF);
 } else {
-emit_byte(op1);
+emit_int8(op1);
 emit_operand(rm, adr, 4);
 emit_long(imm32);
 }
 }
 void Assembler::emit_arith(int op1, int op2, Register dst, Register src) {
 assert(isByte(op1) && isByte(op2), "wrong opcode");
-emit_byte(op1);
+emit_int8(op1);
-emit_byte(op2 | encode(dst) << 3 | encode(src));
+emit_int8(op2 | encode(dst) << 3 | encode(src));
 }
 void Assembler::emit_operand(Register reg, Register base, Register index,
 Address::ScaleFactor scale, int disp,
 if (disp == 0 && rtype == relocInfo::none  &&
 base != rbp LP64_ONLY(&& base != r13)) {
 // [base + index*scale]
 // [00 reg 100][ss index base]
 assert(index != rsp, "illegal addressing mode");
-emit_byte(0x04 | regenc);
+emit_int8(0x04 | regenc);
-emit_byte(scale << 6 | indexenc | baseenc);
+emit_int8(scale << 6 | indexenc | baseenc);
 } else if (is8bit(disp) && rtype == relocInfo::none) {
 // [base + index*scale + imm8]
 // [01 reg 100][ss index base] imm8
 assert(index != rsp, "illegal addressing mode");
-emit_byte(0x44 | regenc);
+emit_int8(0x44 | regenc);
-emit_byte(scale << 6 | indexenc | baseenc);
+emit_int8(scale << 6 | indexenc | baseenc);
-emit_byte(disp & 0xFF);
+emit_int8(disp & 0xFF);
 } else {
 // [base + index*scale + disp32]
 // [10 reg 100][ss index base] disp32
 assert(index != rsp, "illegal addressing mode");
-emit_byte(0x84 | regenc);
+emit_int8(0x84 | regenc);
-emit_byte(scale << 6 | indexenc | baseenc);
+emit_int8(scale << 6 | indexenc | baseenc);
 emit_data(disp, rspec, disp32_operand);
 }
 } else if (base == rsp LP64_ONLY(|| base == r12)) {
 // [rsp + disp]
 if (disp == 0 && rtype == relocInfo::none) {
 // [rsp]
 // [00 reg 100][00 100 100]
-emit_byte(0x04 | regenc);
+emit_int8(0x04 | regenc);
-emit_byte(0x24);
+emit_int8(0x24);
 } else if (is8bit(disp) && rtype == relocInfo::none) {
 // [rsp + imm8]
 // [01 reg 100][00 100 100] disp8
-emit_byte(0x44 | regenc);
+emit_int8(0x44 | regenc);
-emit_byte(0x24);
+emit_int8(0x24);
-emit_byte(disp & 0xFF);
+emit_int8(disp & 0xFF);
 } else {
 // [rsp + imm32]
 // [10 reg 100][00 100 100] disp32
-emit_byte(0x84 | regenc);
+emit_int8(0x84 | regenc);
-emit_byte(0x24);
+emit_int8(0x24);
 emit_data(disp, rspec, disp32_operand);
 }
 } else {
 // [base + disp]
 assert(base != rsp LP64_ONLY(&& base != r12), "illegal addressing mode");
 if (disp == 0 && rtype == relocInfo::none &&
 base != rbp LP64_ONLY(&& base != r13)) {
 // [base]
 // [00 reg base]
-emit_byte(0x00 | regenc | baseenc);
+emit_int8(0x00 | regenc | baseenc);
 } else if (is8bit(disp) && rtype == relocInfo::none) {
 // [base + disp8]
 // [01 reg base] disp8
-emit_byte(0x40 | regenc | baseenc);
+emit_int8(0x40 | regenc | baseenc);
-emit_byte(disp & 0xFF);
+emit_int8(disp & 0xFF);
 } else {
 // [base + disp32]
 // [10 reg base] disp32
-emit_byte(0x80 | regenc | baseenc);
+emit_int8(0x80 | regenc | baseenc);
 emit_data(disp, rspec, disp32_operand);
 }
 }
 } else {
 if (index->is_valid()) {
 assert(scale != Address::no_scale, "inconsistent address");
 // [index*scale + disp]
 // [00 reg 100][ss index 101] disp32
 assert(index != rsp, "illegal addressing mode");
-emit_byte(0x04 | regenc);
+emit_int8(0x04 | regenc);
-emit_byte(scale << 6 | indexenc | 0x05);
+emit_int8(scale << 6 | indexenc | 0x05);
 emit_data(disp, rspec, disp32_operand);
 } else if (rtype != relocInfo::none ) {
 // [disp] (64bit) RIP-RELATIVE (32bit) abs
 // [00 000 101] disp32
-emit_byte(0x05 | regenc);
+emit_int8(0x05 | regenc);
 // Note that the RIP-rel. correction applies to the generated
 // disp field, but _not_ to the target address in the rspec.
 // disp was created by converting the target address minus the pc
 // at the start of the instruction. That needs more correction here.
 } else {
 // 32bit never did this, did everything as the rip-rel/disp code above
 // [disp] ABSOLUTE
 // [00 reg 100][00 100 101] disp32
-emit_byte(0x04 | regenc);
+emit_int8(0x04 | regenc);
-emit_byte(0x25);
+emit_int8(0x25);
 emit_data(disp, rspec, disp32_operand);
 }
 }
 }
 void Assembler::emit_farith(int b1, int b2, int i) {
 assert(isByte(b1) && isByte(b2), "wrong opcode");
 assert(0 <= i &&  i < 8, "illegal stack offset");
-emit_byte(b1);
+emit_int8(b1);
-emit_byte(b2 + i);
+emit_int8(b2 + i);
 }
 // Now the Assembler instructions (identical for 32/64 bits)
 }
 void Assembler::adcl(Address dst, Register src) {
 InstructionMark im(this);
 prefix(dst, src);
-emit_byte(0x11);
+emit_int8(0x11);
 emit_operand(src, dst);
 }
 void Assembler::adcl(Register dst, int32_t imm32) {
 prefix(dst);
 }
 void Assembler::adcl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x13);
+emit_int8(0x13);
 emit_operand(dst, src);
 }
 void Assembler::adcl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::addl(Address dst, Register src) {
 InstructionMark im(this);
 prefix(dst, src);
-emit_byte(0x01);
+emit_int8(0x01);
 emit_operand(src, dst);
 }
 void Assembler::addl(Register dst, int32_t imm32) {
 prefix(dst);
 }
 void Assembler::addl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x03);
+emit_int8(0x03);
 emit_operand(dst, src);
 }
 void Assembler::addl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::addr_nop_4() {
 assert(UseAddressNop, "no CPU support");
 // 4 bytes: NOP DWORD PTR [EAX+0]
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x1F);
+emit_int8(0x1F);
-emit_byte(0x40); // emit_rm(cbuf, 0x1, EAX_enc, EAX_enc);
+emit_int8(0x40); // emit_rm(cbuf, 0x1, EAX_enc, EAX_enc);
-emit_byte(0);    // 8-bits offset (1 byte)
+emit_int8(0);    // 8-bits offset (1 byte)
 }
 void Assembler::addr_nop_5() {
 assert(UseAddressNop, "no CPU support");
 // 5 bytes: NOP DWORD PTR [EAX+EAX*0+0] 8-bits offset
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x1F);
+emit_int8(0x1F);
-emit_byte(0x44); // emit_rm(cbuf, 0x1, EAX_enc, 0x4);
+emit_int8(0x44); // emit_rm(cbuf, 0x1, EAX_enc, 0x4);
-emit_byte(0x00); // emit_rm(cbuf, 0x0, EAX_enc, EAX_enc);
+emit_int8(0x00); // emit_rm(cbuf, 0x0, EAX_enc, EAX_enc);
-emit_byte(0);    // 8-bits offset (1 byte)
+emit_int8(0);    // 8-bits offset (1 byte)
 }
 void Assembler::addr_nop_7() {
 assert(UseAddressNop, "no CPU support");
 // 7 bytes: NOP DWORD PTR [EAX+0] 32-bits offset
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x1F);
+emit_int8(0x1F);
-emit_byte(0x80); // emit_rm(cbuf, 0x2, EAX_enc, EAX_enc);
+emit_int8((unsigned char)0x80);
+// emit_rm(cbuf, 0x2, EAX_enc, EAX_enc);
 emit_long(0);    // 32-bits offset (4 bytes)
 }
 void Assembler::addr_nop_8() {
 assert(UseAddressNop, "no CPU support");
 // 8 bytes: NOP DWORD PTR [EAX+EAX*0+0] 32-bits offset
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x1F);
+emit_int8(0x1F);
-emit_byte(0x84); // emit_rm(cbuf, 0x2, EAX_enc, 0x4);
+emit_int8((unsigned char)0x84);
-emit_byte(0x00); // emit_rm(cbuf, 0x0, EAX_enc, EAX_enc);
+// emit_rm(cbuf, 0x2, EAX_enc, 0x4);
+emit_int8(0x00); // emit_rm(cbuf, 0x0, EAX_enc, EAX_enc);
 emit_long(0);    // 32-bits offset (4 bytes)
 }
 void Assembler::addsd(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 void Assembler::aesdec(XMMRegister dst, Address src) {
 assert(VM_Version::supports_aes(), "");
 InstructionMark im(this);
 simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xde);
+emit_int8((unsigned char)0xDE);
 emit_operand(dst, src);
 }
 void Assembler::aesdec(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_aes(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xde);
+emit_int8((unsigned char)0xDE);
-emit_byte(0xC0 | encode);
+emit_int8(0xC0 | encode);
 }
 void Assembler::aesdeclast(XMMRegister dst, Address src) {
 assert(VM_Version::supports_aes(), "");
 InstructionMark im(this);
 simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdf);
+emit_int8((unsigned char)0xDF);
 emit_operand(dst, src);
 }
 void Assembler::aesdeclast(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_aes(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdf);
+emit_int8((unsigned char)0xDF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::aesenc(XMMRegister dst, Address src) {
 assert(VM_Version::supports_aes(), "");
 InstructionMark im(this);
 simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdc);
+emit_int8((unsigned char)0xDC);
 emit_operand(dst, src);
 }
 void Assembler::aesenc(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_aes(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdc);
+emit_int8((unsigned char)0xDC);
-emit_byte(0xC0 | encode);
+emit_int8(0xC0 | encode);
 }
 void Assembler::aesenclast(XMMRegister dst, Address src) {
 assert(VM_Version::supports_aes(), "");
 InstructionMark im(this);
 simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdd);
+emit_int8((unsigned char)0xDD);
 emit_operand(dst, src);
 }
 void Assembler::aesenclast(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_aes(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0xdd);
+emit_int8((unsigned char)0xDD);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::andl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rsp, dst, 4);
 emit_long(imm32);
 }
 void Assembler::andl(Register dst, int32_t imm32) {
 }
 void Assembler::andl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x23);
+emit_int8(0x23);
 emit_operand(dst, src);
 }
 void Assembler::andl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 emit_arith(0x23, 0xC0, dst, src);
 }
 void Assembler::bsfl(Register dst, Register src) {
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBC);
+emit_int8((unsigned char)0xBC);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::bsrl(Register dst, Register src) {
 assert(!VM_Version::supports_lzcnt(), "encoding is treated as LZCNT");
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBD);
+emit_int8((unsigned char)0xBD);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::bswapl(Register reg) { // bswap
 int encode = prefix_and_encode(reg->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xC8 | encode);
+emit_int8((unsigned char)(0xC8 | encode));
 }
 void Assembler::call(Label& L, relocInfo::relocType rtype) {
 // suspect disp32 is always good
 int operand = LP64_ONLY(disp32_operand) NOT_LP64(imm_operand);
 const int long_size = 5;
 int offs = (int)( target(L) - pc() );
 assert(offs <= 0, "assembler error");
 InstructionMark im(this);
 // 1110 1000 #32-bit disp
-emit_byte(0xE8);
+emit_int8((unsigned char)0xE8);
 emit_data(offs - long_size, rtype, operand);
 } else {
 InstructionMark im(this);
 // 1110 1000 #32-bit disp
 L.add_patch_at(code(), locator());
-emit_byte(0xE8);
+emit_int8((unsigned char)0xE8);
 emit_data(int(0), rtype, operand);
 }
 }
 void Assembler::call(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)(0xD0 | encode));
 }
 void Assembler::call(Address adr) {
 InstructionMark im(this);
 prefix(adr);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rdx, adr);
 }
 void Assembler::call_literal(address entry, RelocationHolder const& rspec) {
 assert(entry != NULL, "call most probably wrong");
 InstructionMark im(this);
-emit_byte(0xE8);
+emit_int8((unsigned char)0xE8);
 intptr_t disp = entry - (pc() + sizeof(int32_t));
 assert(is_simm32(disp), "must be 32bit offset (call2)");
 // Technically, should use call32_operand, but this format is
 // implied by the fact that we're emitting a call instruction.
 int operand = LP64_ONLY(disp32_operand) NOT_LP64(call32_operand);
 emit_data((int) disp, rspec, operand);
 }
 void Assembler::cdql() {
-emit_byte(0x99);
+emit_int8((unsigned char)0x99);
 }
 void Assembler::cld() {
-emit_byte(0xfc);
+emit_int8((unsigned char)0xFC);
 }
 void Assembler::cmovl(Condition cc, Register dst, Register src) {
 NOT_LP64(guarantee(VM_Version::supports_cmov(), "illegal instruction"));
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x40 | cc);
+emit_int8(0x40 | cc);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cmovl(Condition cc, Register dst, Address src) {
 NOT_LP64(guarantee(VM_Version::supports_cmov(), "illegal instruction"));
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x40 | cc);
+emit_int8(0x40 | cc);
 emit_operand(dst, src);
 }
 void Assembler::cmpb(Address dst, int imm8) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0x80);
+emit_int8((unsigned char)0x80);
 emit_operand(rdi, dst, 1);
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::cmpl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rdi, dst, 4);
 emit_long(imm32);
 }
 void Assembler::cmpl(Register dst, int32_t imm32) {
 void Assembler::cmpl(Register dst, Address  src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x3B);
+emit_int8((unsigned char)0x3B);
 emit_operand(dst, src);
 }
 void Assembler::cmpw(Address dst, int imm16) {
 InstructionMark im(this);
 assert(!dst.base_needs_rex() && !dst.index_needs_rex(), "no extended registers");
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rdi, dst, 2);
 emit_int16(imm16);
 }
 // The 32-bit cmpxchg compares the value at adr with the contents of rax,
 // and stores reg into adr if so; otherwise, the value at adr is loaded into rax,.
 // The ZF is set if the compared values were equal, and cleared otherwise.
 void Assembler::cmpxchgl(Register reg, Address adr) { // cmpxchg
 InstructionMark im(this);
 prefix(adr, reg);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB1);
+emit_int8((unsigned char)0xB1);
 emit_operand(reg, adr);
 }
 void Assembler::comisd(XMMRegister dst, Address src) {
 // NOTE: dbx seems to decode this as comiss even though the
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 emit_simd_arith_nonds(0x2F, dst, src, VEX_SIMD_NONE);
 }
 void Assembler::cpuid() {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xA2);
+emit_int8((unsigned char)0xA2);
 }
 void Assembler::cvtdq2pd(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith_nonds(0xE6, dst, src, VEX_SIMD_F3);
 }
 void Assembler::cvtsi2sdl(XMMRegister dst, Register src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F2);
-emit_byte(0x2A);
+emit_int8(0x2A);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvtsi2sdl(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0x2A, dst, src, VEX_SIMD_F2);
 }
 void Assembler::cvtsi2ssl(XMMRegister dst, Register src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3);
-emit_byte(0x2A);
+emit_int8(0x2A);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvtsi2ssl(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 emit_simd_arith(0x2A, dst, src, VEX_SIMD_F3);
 void Assembler::cvttsd2sil(Register dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_F2);
-emit_byte(0x2C);
+emit_int8(0x2C);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvttss2sil(Register dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_F3);
-emit_byte(0x2C);
+emit_int8(0x2C);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::decl(Address dst) {
 // Don't use it directly. Use MacroAssembler::decrement() instead.
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rcx, dst);
 }
 void Assembler::divsd(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0x5E, dst, src, VEX_SIMD_F3);
 }
 void Assembler::emms() {
 NOT_LP64(assert(VM_Version::supports_mmx(), ""));
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x77);
+emit_int8(0x77);
 }
 void Assembler::hlt() {
-emit_byte(0xF4);
+emit_int8((unsigned char)0xF4);
 }
 void Assembler::idivl(Register src) {
 int encode = prefix_and_encode(src->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 }
 void Assembler::divl(Register src) { // Unsigned
 int encode = prefix_and_encode(src->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xF0 | encode);
+emit_int8((unsigned char)(0xF0 | encode));
 }
 void Assembler::imull(Register dst, Register src) {
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAF);
+emit_int8((unsigned char)0xAF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::imull(Register dst, Register src, int value) {
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
 if (is8bit(value)) {
-emit_byte(0x6B);
+emit_int8(0x6B);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(value & 0xFF);
+emit_int8(value & 0xFF);
 } else {
-emit_byte(0x69);
+emit_int8(0x69);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 emit_long(value);
 }
 }
 void Assembler::incl(Address dst) {
 // Don't use it directly. Use MacroAssembler::increment() instead.
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rax, dst);
 }
 void Assembler::jcc(Condition cc, Label& L, bool maybe_short) {
 InstructionMark im(this);
 const int short_size = 2;
 const int long_size = 6;
 intptr_t offs = (intptr_t)dst - (intptr_t)pc();
 if (maybe_short && is8bit(offs - short_size)) {
 // 0111 tttn #8-bit disp
-emit_byte(0x70 | cc);
+emit_int8(0x70 | cc);
-emit_byte((offs - short_size) & 0xFF);
+emit_int8((offs - short_size) & 0xFF);
 } else {
 // 0000 1111 1000 tttn #32-bit disp
 assert(is_simm32(offs - long_size),
 "must be 32bit offset (call4)");
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x80 | cc);
+emit_int8((unsigned char)(0x80 | cc));
 emit_long(offs - long_size);
 }
 } else {
 // Note: could eliminate cond. jumps to this jump if condition
 //       is the same however, seems to be rather unlikely case.
 // Note: use jccb() if label to be bound is very close to get
 //       an 8-bit displacement
 L.add_patch_at(code(), locator());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x80 | cc);
+emit_int8((unsigned char)(0x80 | cc));
 emit_long(0);
 }
 }
 void Assembler::jccb(Condition cc, Label& L) {
 }
 assert(is8bit(dist), "Dispacement too large for a short jmp");
 #endif
 intptr_t offs = (intptr_t)entry - (intptr_t)pc();
 // 0111 tttn #8-bit disp
-emit_byte(0x70 | cc);
+emit_int8(0x70 | cc);
-emit_byte((offs - short_size) & 0xFF);
+emit_int8((offs - short_size) & 0xFF);
 } else {
 InstructionMark im(this);
 L.add_patch_at(code(), locator());
-emit_byte(0x70 | cc);
+emit_int8(0x70 | cc);
-emit_byte(0);
+emit_int8(0);
 }
 }
 void Assembler::jmp(Address adr) {
 InstructionMark im(this);
 prefix(adr);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rsp, adr);
 }
 void Assembler::jmp(Label& L, bool maybe_short) {
 if (L.is_bound()) {
 InstructionMark im(this);
 const int short_size = 2;
 const int long_size = 5;
 intptr_t offs = entry - pc();
 if (maybe_short && is8bit(offs - short_size)) {
-emit_byte(0xEB);
+emit_int8((unsigned char)0xEB);
-emit_byte((offs - short_size) & 0xFF);
+emit_int8((offs - short_size) & 0xFF);
 } else {
-emit_byte(0xE9);
+emit_int8((unsigned char)0xE9);
 emit_long(offs - long_size);
 }
 } else {
 // By default, forward jumps are always 32-bit displacements, since
 // we can't yet know where the label will be bound.  If you're sure that
 // the forward jump will not run beyond 256 bytes, use jmpb to
 // force an 8-bit displacement.
 InstructionMark im(this);
 L.add_patch_at(code(), locator());
-emit_byte(0xE9);
+emit_int8((unsigned char)0xE9);
 emit_long(0);
 }
 }
 void Assembler::jmp(Register entry) {
 int encode = prefix_and_encode(entry->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 }
 void Assembler::jmp_literal(address dest, RelocationHolder const& rspec) {
 InstructionMark im(this);
-emit_byte(0xE9);
+emit_int8((unsigned char)0xE9);
 assert(dest != NULL, "must have a target");
 intptr_t disp = dest - (pc() + sizeof(int32_t));
 assert(is_simm32(disp), "must be 32bit offset (jmp)");
 emit_data(disp, rspec.reloc(), call32_operand);
 }
 dist += (dist < 0 ? (-delta) :delta);
 }
 assert(is8bit(dist), "Dispacement too large for a short jmp");
 #endif
 intptr_t offs = entry - pc();
-emit_byte(0xEB);
+emit_int8((unsigned char)0xEB);
-emit_byte((offs - short_size) & 0xFF);
+emit_int8((offs - short_size) & 0xFF);
 } else {
 InstructionMark im(this);
 L.add_patch_at(code(), locator());
-emit_byte(0xEB);
+emit_int8((unsigned char)0xEB);
-emit_byte(0);
+emit_int8(0);
 }
 }
 void Assembler::ldmxcsr( Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 InstructionMark im(this);
 prefix(src);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
 emit_operand(as_Register(2), src);
 }
 void Assembler::leal(Register dst, Address src) {
 InstructionMark im(this);
 #ifdef _LP64
-emit_byte(0x67); // addr32
+emit_int8(0x67); // addr32
 prefix(src, dst);
 #endif // LP64
-emit_byte(0x8D);
+emit_int8((unsigned char)0x8D);
 emit_operand(dst, src);
 }
 void Assembler::lfence() {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
-emit_byte(0xE8);
+emit_int8((unsigned char)0xE8);
 }
 void Assembler::lock() {
-emit_byte(0xF0);
+emit_int8((unsigned char)0xF0);
 }
 void Assembler::lzcntl(Register dst, Register src) {
 assert(VM_Version::supports_lzcnt(), "encoding is treated as BSR");
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBD);
+emit_int8((unsigned char)0xBD);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 // Emit mfence instruction
 void Assembler::mfence() {
 NOT_LP64(assert(VM_Version::supports_sse2(), "unsupported");)
-emit_byte( 0x0F );
+emit_int8(0x0F);
-emit_byte( 0xAE );
+emit_int8((unsigned char)0xAE);
-emit_byte( 0xF0 );
+emit_int8((unsigned char)0xF0);
 }
 void Assembler::mov(Register dst, Register src) {
 LP64_ONLY(movq(dst, src)) NOT_LP64(movl(dst, src));
 }
 }
 void Assembler::movlhps(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 int encode = simd_prefix_and_encode(dst, src, src, VEX_SIMD_NONE);
-emit_byte(0x16);
+emit_int8(0x16);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movb(Register dst, Address src) {
 NOT_LP64(assert(dst->has_byte_register(), "must have byte register"));
 InstructionMark im(this);
 prefix(src, dst, true);
-emit_byte(0x8A);
+emit_int8((unsigned char)0x8A);
 emit_operand(dst, src);
 }
 void Assembler::movb(Address dst, int imm8) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0xC6);
+emit_int8((unsigned char)0xC6);
 emit_operand(rax, dst, 1);
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::movb(Address dst, Register src) {
 assert(src->has_byte_register(), "must have byte register");
 InstructionMark im(this);
 prefix(dst, src, true);
-emit_byte(0x88);
+emit_int8((unsigned char)0x88);
 emit_operand(src, dst);
 }
 void Assembler::movdl(XMMRegister dst, Register src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode(dst, src, VEX_SIMD_66);
-emit_byte(0x6E);
+emit_int8(0x6E);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movdl(Register dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // swap src/dst to get correct prefix
 int encode = simd_prefix_and_encode(src, dst, VEX_SIMD_66);
-emit_byte(0x7E);
+emit_int8(0x7E);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movdl(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66);
-emit_byte(0x6E);
+emit_int8(0x6E);
 emit_operand(dst, src);
 }
 void Assembler::movdl(Address dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66);
-emit_byte(0x7E);
+emit_int8(0x7E);
 emit_operand(src, dst);
 }
 void Assembler::movdqa(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 void Assembler::movdqu(Address dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_F3);
-emit_byte(0x7F);
+emit_int8(0x7F);
 emit_operand(src, dst);
 }
 // Move Unaligned 256bit Vector
 void Assembler::vmovdqu(XMMRegister dst, XMMRegister src) {
 assert(UseAVX, "");
 bool vector256 = true;
 int encode = vex_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_F3, vector256);
-emit_byte(0x6F);
+emit_int8(0x6F);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::vmovdqu(XMMRegister dst, Address src) {
 assert(UseAVX, "");
 InstructionMark im(this);
 bool vector256 = true;
 vex_prefix(dst, xnoreg, src, VEX_SIMD_F3, vector256);
-emit_byte(0x6F);
+emit_int8(0x6F);
 emit_operand(dst, src);
 }
 void Assembler::vmovdqu(Address dst, XMMRegister src) {
 assert(UseAVX, "");
 InstructionMark im(this);
 bool vector256 = true;
 // swap src<->dst for encoding
 assert(src != xnoreg, "sanity");
 vex_prefix(src, xnoreg, dst, VEX_SIMD_F3, vector256);
-emit_byte(0x7F);
+emit_int8(0x7F);
 emit_operand(src, dst);
 }
 // Uses zero extension on 64bit
 void Assembler::movl(Register dst, int32_t imm32) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xB8 | encode);
+emit_int8((unsigned char)(0xB8 | encode));
 emit_long(imm32);
 }
 void Assembler::movl(Register dst, Register src) {
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x8B);
+emit_int8((unsigned char)0x8B);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x8B);
+emit_int8((unsigned char)0x8B);
 emit_operand(dst, src);
 }
 void Assembler::movl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0xC7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rax, dst, 4);
 emit_long(imm32);
 }
 void Assembler::movl(Address dst, Register src) {
 InstructionMark im(this);
 prefix(dst, src);
-emit_byte(0x89);
+emit_int8((unsigned char)0x89);
 emit_operand(src, dst);
 }
 // New cpus require to use movsd and movss to avoid partial register stall
 // when loading from memory. But for old Opteron use movlpd instead of movsd.
 emit_simd_arith(0x12, dst, src, VEX_SIMD_66);
 }
 void Assembler::movq( MMXRegister dst, Address src ) {
 assert( VM_Version::supports_mmx(), "" );
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x6F);
+emit_int8(0x6F);
 emit_operand(dst, src);
 }
 void Assembler::movq( Address dst, MMXRegister src ) {
 assert( VM_Version::supports_mmx(), "" );
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x7F);
+emit_int8(0x7F);
 // workaround gcc (3.2.1-7a) bug
 // In that version of gcc with only an emit_operand(MMX, Address)
 // gcc will tail jump and try and reverse the parameters completely
 // obliterating dst in the process. By having a version available
 // that doesn't need to swap the args at the tail jump the bug is
 void Assembler::movq(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_F3);
-emit_byte(0x7E);
+emit_int8(0x7E);
 emit_operand(dst, src);
 }
 void Assembler::movq(Address dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66);
-emit_byte(0xD6);
+emit_int8((unsigned char)0xD6);
 emit_operand(src, dst);
 }
 void Assembler::movsbl(Register dst, Address src) { // movsxb
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBE);
+emit_int8((unsigned char)0xBE);
 emit_operand(dst, src);
 }
 void Assembler::movsbl(Register dst, Register src) { // movsxb
 NOT_LP64(assert(src->has_byte_register(), "must have byte register"));
 int encode = prefix_and_encode(dst->encoding(), src->encoding(), true);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBE);
+emit_int8((unsigned char)0xBE);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movsd(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0x10, dst, src, VEX_SIMD_F2);
 void Assembler::movsd(Address dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_F2);
-emit_byte(0x11);
+emit_int8(0x11);
 emit_operand(src, dst);
 }
 void Assembler::movss(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 void Assembler::movss(Address dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_F3);
-emit_byte(0x11);
+emit_int8(0x11);
 emit_operand(src, dst);
 }
 void Assembler::movswl(Register dst, Address src) { // movsxw
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBF);
+emit_int8((unsigned char)0xBF);
 emit_operand(dst, src);
 }
 void Assembler::movswl(Register dst, Register src) { // movsxw
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBF);
+emit_int8((unsigned char)0xBF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movw(Address dst, int imm16) {
 InstructionMark im(this);
-emit_byte(0x66); // switch to 16-bit mode
+emit_int8(0x66); // switch to 16-bit mode
 prefix(dst);
-emit_byte(0xC7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rax, dst, 2);
 emit_int16(imm16);
 }
 void Assembler::movw(Register dst, Address src) {
 InstructionMark im(this);
-emit_byte(0x66);
+emit_int8(0x66);
 prefix(src, dst);
-emit_byte(0x8B);
+emit_int8((unsigned char)0x8B);
 emit_operand(dst, src);
 }
 void Assembler::movw(Address dst, Register src) {
 InstructionMark im(this);
-emit_byte(0x66);
+emit_int8(0x66);
 prefix(dst, src);
-emit_byte(0x89);
+emit_int8((unsigned char)0x89);
 emit_operand(src, dst);
 }
 void Assembler::movzbl(Register dst, Address src) { // movzxb
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB6);
+emit_int8((unsigned char)0xB6);
 emit_operand(dst, src);
 }
 void Assembler::movzbl(Register dst, Register src) { // movzxb
 NOT_LP64(assert(src->has_byte_register(), "must have byte register"));
 int encode = prefix_and_encode(dst->encoding(), src->encoding(), true);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB6);
+emit_int8((unsigned char)0xB6);
-emit_byte(0xC0 | encode);
+emit_int8(0xC0 | encode);
 }
 void Assembler::movzwl(Register dst, Address src) { // movzxw
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB7);
+emit_int8((unsigned char)0xB7);
 emit_operand(dst, src);
 }
 void Assembler::movzwl(Register dst, Register src) { // movzxw
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB7);
+emit_int8((unsigned char)0xB7);
-emit_byte(0xC0 | encode);
+emit_int8(0xC0 | encode);
 }
 void Assembler::mull(Address src) {
 InstructionMark im(this);
 prefix(src);
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
 emit_operand(rsp, src);
 }
 void Assembler::mull(Register src) {
 int encode = prefix_and_encode(src->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 }
 void Assembler::mulsd(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0x59, dst, src, VEX_SIMD_F2);
 emit_simd_arith(0x59, dst, src, VEX_SIMD_F3);
 }
 void Assembler::negl(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xD8 | encode);
+emit_int8((unsigned char)(0xD8 | encode));
 }
 void Assembler::nop(int i) {
 #ifdef ASSERT
 assert(i > 0, " ");
 // The fancy nops aren't currently recognized by debuggers making it a
 // pain to disassemble code while debugging. If asserts are on clearly
 // speed is not an issue so simply use the single byte traditional nop
 // to do alignment.
-for (; i > 0 ; i--) emit_byte(0x90);
+for (; i > 0 ; i--) emit_int8((unsigned char)0x90);
 return;
 #endif // ASSERT
 if (UseAddressNop && VM_Version::is_intel()) {
 // 15: 0x66 0x66 0x66 0x0F 0x1F 0x84 0x00 0x00 0x00 0x00 0x00 0x66 0x66 0x66 0x90
 while(i >= 15) {
 // For Intel don't generate consecutive addess nops (mix with regular nops)
 i -= 15;
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
 addr_nop_8();
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
-emit_byte(0x66);   // size prefix
+emit_int8(0x66);   // size prefix
-emit_byte(0x90);   // nop
+emit_int8((unsigned char)0x90);
+// nop
 }
 switch (i) {
 case 14:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 13:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 12:
 addr_nop_8();
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x90); // nop
+emit_int8((unsigned char)0x90);
+// nop
 break;
 case 11:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 10:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 9:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 8:
 addr_nop_8();
 break;
 case 7:
 addr_nop_7();
 break;
 case 6:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 5:
 addr_nop_5();
 break;
 case 4:
 addr_nop_4();
 break;
 case 3:
 // Don't use "0x0F 0x1F 0x00" - need patching safe padding
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 2:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 1:
-emit_byte(0x90); // nop
+emit_int8((unsigned char)0x90);
+// nop
 break;
 default:
 assert(i == 0, " ");
 }
 return;
 // 16: 0x0F 0x1F 0x84 0x00 0x00 0x00 0x00 0x00 0x0F 0x1F 0x84 0x00 0x00 0x00 0x00 0x00
 //     Size prefixes (0x66) are added for larger sizes
 while(i >= 22) {
 i -= 11;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 addr_nop_8();
 }
 // Generate first nop for size between 21-12
 switch (i) {
 case 21:
 i -= 1;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 20:
 case 19:
 i -= 1;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 18:
 case 17:
 i -= 1;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 16:
 case 15:
 i -= 8;
 addr_nop_8();
 break;
 i -= 7;
 addr_nop_7();
 break;
 case 12:
 i -= 6;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 addr_nop_5();
 break;
 default:
 assert(i < 12, " ");
 }
 // Generate second nop for size between 11-1
 switch (i) {
 case 11:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 10:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 9:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 8:
 addr_nop_8();
 break;
 case 7:
 addr_nop_7();
 break;
 case 6:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 5:
 addr_nop_5();
 break;
 case 4:
 addr_nop_4();
 break;
 case 3:
 // Don't use "0x0F 0x1F 0x00" - need patching safe padding
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 2:
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
 case 1:
-emit_byte(0x90); // nop
+emit_int8((unsigned char)0x90);
+// nop
 break;
 default:
 assert(i == 0, " ");
 }
 return;
 //  9: 0x66 0x66 0x90 0x66 0x66 0x90 0x66 0x66 0x90
 // 10: 0x66 0x66 0x66 0x90 0x66 0x66 0x90 0x66 0x66 0x90
 //
 while(i > 12) {
 i -= 4;
-emit_byte(0x66); // size prefix
+emit_int8(0x66); // size prefix
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x90); // nop
+emit_int8((unsigned char)0x90);
+// nop
 }
 // 1 - 12 nops
 if(i > 8) {
 if(i > 9) {
 i -= 1;
-emit_byte(0x66);
+emit_int8(0x66);
 }
 i -= 3;
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x90);
+emit_int8((unsigned char)0x90);
 }
 // 1 - 8 nops
 if(i > 4) {
 if(i > 6) {
 i -= 1;
-emit_byte(0x66);
+emit_int8(0x66);
 }
 i -= 3;
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x66);
+emit_int8(0x66);
-emit_byte(0x90);
+emit_int8((unsigned char)0x90);
 }
 switch (i) {
 case 4:
-emit_byte(0x66);
+emit_int8(0x66);
 case 3:
-emit_byte(0x66);
+emit_int8(0x66);
 case 2:
-emit_byte(0x66);
+emit_int8(0x66);
 case 1:
-emit_byte(0x90);
+emit_int8((unsigned char)0x90);
 break;
 default:
 assert(i == 0, " ");
 }
 }
 void Assembler::notl(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xD0 | encode );
+emit_int8((unsigned char)(0xD0 | encode));
 }
 void Assembler::orl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefix(dst);
 }
 void Assembler::orl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x0B);
+emit_int8(0x0B);
 emit_operand(dst, src);
 }
 void Assembler::orl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 void Assembler::pcmpestri(XMMRegister dst, Address src, int imm8) {
 assert(VM_Version::supports_sse4_2(), "");
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66, VEX_OPCODE_0F_3A);
-emit_byte(0x61);
+emit_int8(0x61);
 emit_operand(dst, src);
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::pcmpestri(XMMRegister dst, XMMRegister src, int imm8) {
 assert(VM_Version::supports_sse4_2(), "");
 int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_3A);
-emit_byte(0x61);
+emit_int8(0x61);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::pmovzxbw(XMMRegister dst, Address src) {
 assert(VM_Version::supports_sse4_1(), "");
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x30);
+emit_int8(0x30);
 emit_operand(dst, src);
 }
 void Assembler::pmovzxbw(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_sse4_1(), "");
 int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x30);
+emit_int8(0x30);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 // generic
 void Assembler::pop(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0x58 | encode);
+emit_int8(0x58 | encode);
 }
 void Assembler::popcntl(Register dst, Address src) {
 assert(VM_Version::supports_popcnt(), "must support");
 InstructionMark im(this);
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 prefix(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB8);
+emit_int8((unsigned char)0xB8);
 emit_operand(dst, src);
 }
 void Assembler::popcntl(Register dst, Register src) {
 assert(VM_Version::supports_popcnt(), "must support");
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB8);
+emit_int8((unsigned char)0xB8);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::popf() {
-emit_byte(0x9D);
+emit_int8((unsigned char)0x9D);
 }
 #ifndef _LP64 // no 32bit push/pop on amd64
 void Assembler::popl(Address dst) {
 // NOTE: this will adjust stack by 8byte on 64bits
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0x8F);
+emit_int8((unsigned char)0x8F);
 emit_operand(rax, dst);
 }
 #endif
 void Assembler::prefetch_prefix(Address src) {
 prefix(src);
-emit_byte(0x0F);
+emit_int8(0x0F);
 }
 void Assembler::prefetchnta(Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), "must support"));
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x18);
+emit_int8(0x18);
 emit_operand(rax, src); // 0, src
 }
 void Assembler::prefetchr(Address src) {
 assert(VM_Version::supports_3dnow_prefetch(), "must support");
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x0D);
+emit_int8(0x0D);
 emit_operand(rax, src); // 0, src
 }
 void Assembler::prefetcht0(Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), "must support"));
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x18);
+emit_int8(0x18);
 emit_operand(rcx, src); // 1, src
 }
 void Assembler::prefetcht1(Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), "must support"));
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x18);
+emit_int8(0x18);
 emit_operand(rdx, src); // 2, src
 }
 void Assembler::prefetcht2(Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), "must support"));
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x18);
+emit_int8(0x18);
 emit_operand(rbx, src); // 3, src
 }
 void Assembler::prefetchw(Address src) {
 assert(VM_Version::supports_3dnow_prefetch(), "must support");
 InstructionMark im(this);
 prefetch_prefix(src);
-emit_byte(0x0D);
+emit_int8(0x0D);
 emit_operand(rcx, src); // 1, src
 }
 void Assembler::prefix(Prefix p) {
-a_byte(p);
+emit_int8(p);
 }
 void Assembler::pshufb(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_ssse3(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x00);
+emit_int8(0x00);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::pshufb(XMMRegister dst, Address src) {
 assert(VM_Version::supports_ssse3(), "");
 InstructionMark im(this);
 simd_prefix(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x00);
+emit_int8(0x00);
 emit_operand(dst, src);
 }
 void Assembler::pshufd(XMMRegister dst, XMMRegister src, int mode) {
 assert(isByte(mode), "invalid value");
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith_nonds(0x70, dst, src, VEX_SIMD_66);
-emit_byte(mode & 0xFF);
+emit_int8(mode & 0xFF);
 }
 void Assembler::pshufd(XMMRegister dst, Address src, int mode) {
 assert(isByte(mode), "invalid value");
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66);
-emit_byte(0x70);
+emit_int8(0x70);
 emit_operand(dst, src);
-emit_byte(mode & 0xFF);
+emit_int8(mode & 0xFF);
 }
 void Assembler::pshuflw(XMMRegister dst, XMMRegister src, int mode) {
 assert(isByte(mode), "invalid value");
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith_nonds(0x70, dst, src, VEX_SIMD_F2);
-emit_byte(mode & 0xFF);
+emit_int8(mode & 0xFF);
 }
 void Assembler::pshuflw(XMMRegister dst, Address src, int mode) {
 assert(isByte(mode), "invalid value");
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_F2);
-emit_byte(0x70);
+emit_int8(0x70);
 emit_operand(dst, src);
-emit_byte(mode & 0xFF);
+emit_int8(mode & 0xFF);
 }
 void Assembler::psrldq(XMMRegister dst, int shift) {
 // Shift 128 bit value in xmm register by number of bytes.
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode(xmm3, dst, dst, VEX_SIMD_66);
-emit_byte(0x73);
+emit_int8(0x73);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift);
+emit_int8(shift);
 }
 void Assembler::ptest(XMMRegister dst, Address src) {
 assert(VM_Version::supports_sse4_1(), "");
 assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
 InstructionMark im(this);
 simd_prefix(dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x17);
+emit_int8(0x17);
 emit_operand(dst, src);
 }
 void Assembler::ptest(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_sse4_1(), "");
 int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x17);
+emit_int8(0x17);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::punpcklbw(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 assert((UseAVX > 0), "SSE mode requires address alignment 16 bytes");
 }
 void Assembler::push(int32_t imm32) {
 // in 64bits we push 64bits onto the stack but only
 // take a 32bit immediate
-emit_byte(0x68);
+emit_int8(0x68);
 emit_long(imm32);
 }
 void Assembler::push(Register src) {
 int encode = prefix_and_encode(src->encoding());
-emit_byte(0x50 | encode);
+emit_int8(0x50 | encode);
 }
 void Assembler::pushf() {
-emit_byte(0x9C);
+emit_int8((unsigned char)0x9C);
 }
 #ifndef _LP64 // no 32bit push/pop on amd64
 void Assembler::pushl(Address src) {
 // Note this will push 64bit on 64bit
 InstructionMark im(this);
 prefix(src);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rsi, src);
 }
 #endif
 void Assembler::rcll(Register dst, int imm8) {
 assert(isShiftCount(imm8), "illegal shift count");
 int encode = prefix_and_encode(dst->encoding());
 if (imm8 == 1) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)(0xD0 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)0xD0 | encode);
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 // copies data from [esi] to [edi] using rcx pointer sized words
 // generic
 void Assembler::rep_mov() {
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 // MOVSQ
 LP64_ONLY(prefix(REX_W));
-emit_byte(0xA5);
+emit_int8((unsigned char)0xA5);
 }
 // sets rcx pointer sized words with rax, value at [edi]
 // generic
 void Assembler::rep_set() { // rep_set
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 // STOSQ
 LP64_ONLY(prefix(REX_W));
-emit_byte(0xAB);
+emit_int8((unsigned char)0xAB);
 }
 // scans rcx pointer sized words at [edi] for occurance of rax,
 // generic
 void Assembler::repne_scan() { // repne_scan
-emit_byte(0xF2);
+emit_int8((unsigned char)0xF2);
 // SCASQ
 LP64_ONLY(prefix(REX_W));
-emit_byte(0xAF);
+emit_int8((unsigned char)0xAF);
 }
 #ifdef _LP64
 // scans rcx 4 byte words at [edi] for occurance of rax,
 // generic
 void Assembler::repne_scanl() { // repne_scan
-emit_byte(0xF2);
+emit_int8((unsigned char)0xF2);
 // SCASL
-emit_byte(0xAF);
+emit_int8((unsigned char)0xAF);
 }
 #endif
 void Assembler::ret(int imm16) {
 if (imm16 == 0) {
-emit_byte(0xC3);
+emit_int8((unsigned char)0xC3);
 } else {
-emit_byte(0xC2);
+emit_int8((unsigned char)0xC2);
 emit_int16(imm16);
 }
 }
 void Assembler::sahf() {
 #ifdef _LP64
 // Not supported in 64bit mode
 ShouldNotReachHere();
 #endif
-emit_byte(0x9E);
+emit_int8((unsigned char)0x9E);
 }
 void Assembler::sarl(Register dst, int imm8) {
 int encode = prefix_and_encode(dst->encoding());
 assert(isShiftCount(imm8), "illegal shift count");
 if (imm8 == 1) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 void Assembler::sarl(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 }
 void Assembler::sbbl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefix(dst);
 void Assembler::sbbl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x1B);
+emit_int8(0x1B);
 emit_operand(dst, src);
 }
 void Assembler::sbbl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::setb(Condition cc, Register dst) {
 assert(0 <= cc && cc < 16, "illegal cc");
 int encode = prefix_and_encode(dst->encoding(), true);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x90 | cc);
+emit_int8((unsigned char)0x90 | cc);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::shll(Register dst, int imm8) {
 assert(isShiftCount(imm8), "illegal shift count");
 int encode = prefix_and_encode(dst->encoding());
 if (imm8 == 1 ) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 void Assembler::shll(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 }
 void Assembler::shrl(Register dst, int imm8) {
 assert(isShiftCount(imm8), "illegal shift count");
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xE8 | encode);
+emit_int8((unsigned char)(0xE8 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::shrl(Register dst) {
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xE8 | encode);
+emit_int8((unsigned char)(0xE8 | encode));
 }
 // copies a single word from [esi] to [edi]
 void Assembler::smovl() {
-emit_byte(0xA5);
+emit_int8((unsigned char)0xA5);
 }
 void Assembler::sqrtsd(XMMRegister dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0x51, dst, src, VEX_SIMD_F2);
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 emit_simd_arith(0x51, dst, src, VEX_SIMD_F3);
 }
 void Assembler::std() {
-emit_byte(0xfd);
+emit_int8((unsigned char)0xFD);
 }
 void Assembler::sqrtss(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 emit_simd_arith(0x51, dst, src, VEX_SIMD_F3);
 void Assembler::stmxcsr( Address dst) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
 emit_operand(as_Register(3), dst);
 }
 void Assembler::subl(Address dst, int32_t imm32) {
 InstructionMark im(this);
 }
 void Assembler::subl(Address dst, Register src) {
 InstructionMark im(this);
 prefix(dst, src);
-emit_byte(0x29);
+emit_int8(0x29);
 emit_operand(src, dst);
 }
 void Assembler::subl(Register dst, int32_t imm32) {
 prefix(dst);
 }
 void Assembler::subl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x2B);
+emit_int8(0x2B);
 emit_operand(dst, src);
 }
 void Assembler::subl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 // not using emit_arith because test
 // doesn't support sign-extension of
 // 8bit operands
 int encode = dst->encoding();
 if (encode == 0) {
-emit_byte(0xA9);
+emit_int8((unsigned char)0xA9);
 } else {
 encode = prefix_and_encode(encode);
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 emit_long(imm32);
 }
 void Assembler::testl(Register dst, Register src) {
 }
 void Assembler::testl(Register dst, Address  src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x85);
+emit_int8((unsigned char)0x85);
 emit_operand(dst, src);
 }
 void Assembler::ucomisd(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 void Assembler::xaddl(Address dst, Register src) {
 InstructionMark im(this);
 prefix(dst, src);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
 emit_operand(src, dst);
 }
 void Assembler::xchgl(Register dst, Address src) { // xchg
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x87);
+emit_int8((unsigned char)0x87);
 emit_operand(dst, src);
 }
 void Assembler::xchgl(Register dst, Register src) {
 int encode = prefix_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x87);
+emit_int8((unsigned char)0x87);
-emit_byte(0xc0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::xgetbv() {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x01);
+emit_int8(0x01);
-emit_byte(0xD0);
+emit_int8((unsigned char)0xD0);
 }
 void Assembler::xorl(Register dst, int32_t imm32) {
 prefix(dst);
 emit_arith(0x81, 0xF0, dst, imm32);
 }
 void Assembler::xorl(Register dst, Address src) {
 InstructionMark im(this);
 prefix(src, dst);
-emit_byte(0x33);
+emit_int8(0x33);
 emit_operand(dst, src);
 }
 void Assembler::xorl(Register dst, Register src) {
 (void) prefix_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::pmulld(XMMRegister dst, XMMRegister src) {
 assert(VM_Version::supports_sse4_1(), "");
 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_38);
-emit_byte(0x40);
+emit_int8(0x40);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::vpmullw(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 emit_vex_arith(0xD5, dst, nds, src, VEX_SIMD_66, vector256);
 }
 void Assembler::vpmulld(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector256, VEX_OPCODE_0F_38);
-emit_byte(0x40);
+emit_int8(0x40);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::vpmullw(XMMRegister dst, XMMRegister nds, Address src, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 emit_vex_arith(0xD5, dst, nds, src, VEX_SIMD_66, vector256);
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 InstructionMark im(this);
 int dst_enc = dst->encoding();
 int nds_enc = nds->is_valid() ? nds->encoding() : 0;
 vex_prefix(src, nds_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_38, false, vector256);
-emit_byte(0x40);
+emit_int8(0x40);
 emit_operand(dst, src);
 }
 // Shift packed integers left by specified number of bits.
 void Assembler::psllw(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM6 is for /6 encoding: 66 0F 71 /6 ib
 int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66);
-emit_byte(0x71);
+emit_int8(0x71);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::pslld(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM6 is for /6 encoding: 66 0F 72 /6 ib
 int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66);
-emit_byte(0x72);
+emit_int8(0x72);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psllq(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM6 is for /6 encoding: 66 0F 73 /6 ib
 int encode = simd_prefix_and_encode(xmm6, dst, dst, VEX_SIMD_66);
-emit_byte(0x73);
+emit_int8(0x73);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psllw(XMMRegister dst, XMMRegister shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0xF1, dst, shift, VEX_SIMD_66);
 void Assembler::vpsllw(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM6 is for /6 encoding: 66 0F 71 /6 ib
 emit_vex_arith(0x71, xmm6, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpslld(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM6 is for /6 encoding: 66 0F 72 /6 ib
 emit_vex_arith(0x72, xmm6, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsllq(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM6 is for /6 encoding: 66 0F 73 /6 ib
 emit_vex_arith(0x73, xmm6, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsllw(XMMRegister dst, XMMRegister src, XMMRegister shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 emit_vex_arith(0xF1, dst, src, shift, VEX_SIMD_66, vector256);
 // Shift packed integers logically right by specified number of bits.
 void Assembler::psrlw(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM2 is for /2 encoding: 66 0F 71 /2 ib
 int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66);
-emit_byte(0x71);
+emit_int8(0x71);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psrld(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM2 is for /2 encoding: 66 0F 72 /2 ib
 int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66);
-emit_byte(0x72);
+emit_int8(0x72);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psrlq(XMMRegister dst, int shift) {
 // Do not confuse it with psrldq SSE2 instruction which
 // shifts 128 bit value in xmm register by number of bytes.
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM2 is for /2 encoding: 66 0F 73 /2 ib
 int encode = simd_prefix_and_encode(xmm2, dst, dst, VEX_SIMD_66);
-emit_byte(0x73);
+emit_int8(0x73);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psrlw(XMMRegister dst, XMMRegister shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0xD1, dst, shift, VEX_SIMD_66);
 void Assembler::vpsrlw(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM2 is for /2 encoding: 66 0F 73 /2 ib
 emit_vex_arith(0x71, xmm2, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsrld(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM2 is for /2 encoding: 66 0F 73 /2 ib
 emit_vex_arith(0x72, xmm2, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsrlq(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM2 is for /2 encoding: 66 0F 73 /2 ib
 emit_vex_arith(0x73, xmm2, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsrlw(XMMRegister dst, XMMRegister src, XMMRegister shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 emit_vex_arith(0xD1, dst, src, shift, VEX_SIMD_66, vector256);
 // Shift packed integers arithmetically right by specified number of bits.
 void Assembler::psraw(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM4 is for /4 encoding: 66 0F 71 /4 ib
 int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66);
-emit_byte(0x71);
+emit_int8(0x71);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psrad(XMMRegister dst, int shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // XMM4 is for /4 encoding: 66 0F 72 /4 ib
 int encode = simd_prefix_and_encode(xmm4, dst, dst, VEX_SIMD_66);
-emit_byte(0x72);
+emit_int8(0x72);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::psraw(XMMRegister dst, XMMRegister shift) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 emit_simd_arith(0xE1, dst, shift, VEX_SIMD_66);
 void Assembler::vpsraw(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM4 is for /4 encoding: 66 0F 71 /4 ib
 emit_vex_arith(0x71, xmm4, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsrad(XMMRegister dst, XMMRegister src, int shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 // XMM4 is for /4 encoding: 66 0F 71 /4 ib
 emit_vex_arith(0x72, xmm4, dst, src, VEX_SIMD_66, vector256);
-emit_byte(shift & 0xFF);
+emit_int8(shift & 0xFF);
 }
 void Assembler::vpsraw(XMMRegister dst, XMMRegister src, XMMRegister shift, bool vector256) {
 assert(VM_Version::supports_avx() && !vector256 || VM_Version::supports_avx2(), "256 bit integer vectors requires AVX2");
 emit_vex_arith(0xE1, dst, src, shift, VEX_SIMD_66, vector256);
 void Assembler::vinsertf128h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
 assert(VM_Version::supports_avx(), "");
 bool vector256 = true;
 int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector256, VEX_OPCODE_0F_3A);
-emit_byte(0x18);
+emit_int8(0x18);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 // 0x00 - insert into lower 128 bits
 // 0x01 - insert into upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vinsertf128h(XMMRegister dst, Address src) {
 assert(VM_Version::supports_avx(), "");
 InstructionMark im(this);
 bool vector256 = true;
 assert(dst != xnoreg, "sanity");
 int dst_enc = dst->encoding();
 // swap src<->dst for encoding
 vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, false, vector256);
-emit_byte(0x18);
+emit_int8(0x18);
 emit_operand(dst, src);
 // 0x01 - insert into upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vextractf128h(Address dst, XMMRegister src) {
 assert(VM_Version::supports_avx(), "");
 InstructionMark im(this);
 bool vector256 = true;
 assert(src != xnoreg, "sanity");
 int src_enc = src->encoding();
 vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, false, vector256);
-emit_byte(0x19);
+emit_int8(0x19);
 emit_operand(src, dst);
 // 0x01 - extract from upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vinserti128h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
 assert(VM_Version::supports_avx2(), "");
 bool vector256 = true;
 int encode = vex_prefix_and_encode(dst, nds, src, VEX_SIMD_66, vector256, VEX_OPCODE_0F_3A);
-emit_byte(0x38);
+emit_int8(0x38);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 // 0x00 - insert into lower 128 bits
 // 0x01 - insert into upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vinserti128h(XMMRegister dst, Address src) {
 assert(VM_Version::supports_avx2(), "");
 InstructionMark im(this);
 bool vector256 = true;
 assert(dst != xnoreg, "sanity");
 int dst_enc = dst->encoding();
 // swap src<->dst for encoding
 vex_prefix(src, dst_enc, dst_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, false, vector256);
-emit_byte(0x38);
+emit_int8(0x38);
 emit_operand(dst, src);
 // 0x01 - insert into upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vextracti128h(Address dst, XMMRegister src) {
 assert(VM_Version::supports_avx2(), "");
 InstructionMark im(this);
 bool vector256 = true;
 assert(src != xnoreg, "sanity");
 int src_enc = src->encoding();
 vex_prefix(dst, 0, src_enc, VEX_SIMD_66, VEX_OPCODE_0F_3A, false, vector256);
-emit_byte(0x39);
+emit_int8(0x39);
 emit_operand(src, dst);
 // 0x01 - extract from upper 128 bits
-emit_byte(0x01);
+emit_int8(0x01);
 }
 void Assembler::vzeroupper() {
 assert(VM_Version::supports_avx(), "");
 (void)vex_prefix_and_encode(xmm0, xmm0, xmm0, VEX_SIMD_NONE);
-emit_byte(0x77);
+emit_int8(0x77);
 }
 #ifndef _LP64
 // 32bit only pieces of the assembler
 void Assembler::cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec) {
 // NO PREFIX AS NEVER 64BIT
 InstructionMark im(this);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
-emit_byte(0xF8 | src1->encoding());
+emit_int8((unsigned char)(0xF8 | src1->encoding()));
 emit_data(imm32, rspec, 0);
 }
 void Assembler::cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec) {
 // NO PREFIX AS NEVER 64BIT (not even 32bit versions of 64bit regs
 InstructionMark im(this);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rdi, src1);
 emit_data(imm32, rspec, 0);
 }
 // The 64-bit (32bit platform) cmpxchg compares the value at adr with the contents of rdx:rax,
 // and stores rcx:rbx into adr if so; otherwise, the value at adr is loaded
 // into rdx:rax.  The ZF is set if the compared values were equal, and cleared otherwise.
 void Assembler::cmpxchg8(Address adr) {
 InstructionMark im(this);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xc7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rcx, adr);
 }
 void Assembler::decl(Register dst) {
 // Don't use it directly. Use MacroAssembler::decrementl() instead.
-emit_byte(0x48 | dst->encoding());
+emit_int8(0x48 | dst->encoding());
 }
 #endif // _LP64
 // 64bit typically doesn't use the x87 but needs to for the trig funcs
 void Assembler::fabs() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xE1);
+emit_int8((unsigned char)0xE1);
 }
 void Assembler::fadd(int i) {
 emit_farith(0xD8, 0xC0, i);
 }
 void Assembler::fadd_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rax, src);
 }
 void Assembler::fadd_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rax, src);
 }
 void Assembler::fadda(int i) {
 emit_farith(0xDC, 0xC0, i);
 void Assembler::faddp(int i) {
 emit_farith(0xDE, 0xC0, i);
 }
 void Assembler::fchs() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xE0);
+emit_int8((unsigned char)0xE0);
 }
 void Assembler::fcom(int i) {
 emit_farith(0xD8, 0xD0, i);
 }
 emit_farith(0xD8, 0xD8, i);
 }
 void Assembler::fcomp_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rbx, src);
 }
 void Assembler::fcomp_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rbx, src);
 }
 void Assembler::fcompp() {
-emit_byte(0xDE);
+emit_int8((unsigned char)0xDE);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 }
 void Assembler::fcos() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 }
 void Assembler::fdecstp() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF6);
+emit_int8((unsigned char)0xF6);
 }
 void Assembler::fdiv(int i) {
 emit_farith(0xD8, 0xF0, i);
 }
 void Assembler::fdiv_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rsi, src);
 }
 void Assembler::fdiv_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rsi, src);
 }
 void Assembler::fdiva(int i) {
 emit_farith(0xDC, 0xF8, i);
 emit_farith(0xD8, 0xF8, i);
 }
 void Assembler::fdivr_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rdi, src);
 }
 void Assembler::fdivr_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rdi, src);
 }
 void Assembler::fdivra(int i) {
 emit_farith(0xDC, 0xF0, i);
 emit_farith(0xDD, 0xC0, i);
 }
 void Assembler::fild_d(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDF);
+emit_int8((unsigned char)0xDF);
 emit_operand32(rbp, adr);
 }
 void Assembler::fild_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
 emit_operand32(rax, adr);
 }
 void Assembler::fincstp() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
 }
 void Assembler::finit() {
-emit_byte(0x9B);
+emit_int8((unsigned char)0x9B);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
-emit_byte(0xE3);
+emit_int8((unsigned char)0xE3);
 }
 void Assembler::fist_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
 emit_operand32(rdx, adr);
 }
 void Assembler::fistp_d(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDF);
+emit_int8((unsigned char)0xDF);
 emit_operand32(rdi, adr);
 }
 void Assembler::fistp_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
 emit_operand32(rbx, adr);
 }
 void Assembler::fld1() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xE8);
+emit_int8((unsigned char)0xE8);
 }
 void Assembler::fld_d(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
 emit_operand32(rax, adr);
 }
 void Assembler::fld_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rax, adr);
 }
 void Assembler::fld_s(int index) {
 emit_farith(0xD9, 0xC0, index);
 }
 void Assembler::fld_x(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
 emit_operand32(rbp, adr);
 }
 void Assembler::fldcw(Address src) {
 InstructionMark im(this);
-emit_byte(0xd9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rbp, src);
 }
 void Assembler::fldenv(Address src) {
 InstructionMark im(this);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rsp, src);
 }
 void Assembler::fldlg2() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xEC);
+emit_int8((unsigned char)0xEC);
 }
 void Assembler::fldln2() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xED);
+emit_int8((unsigned char)0xED);
 }
 void Assembler::fldz() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xEE);
+emit_int8((unsigned char)0xEE);
 }
 void Assembler::flog() {
 fldln2();
 fxch();
 emit_farith(0xD8, 0xC8, i);
 }
 void Assembler::fmul_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rcx, src);
 }
 void Assembler::fmul_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rcx, src);
 }
 void Assembler::fmula(int i) {
 emit_farith(0xDC, 0xC8, i);
 emit_farith(0xDE, 0xC8, i);
 }
 void Assembler::fnsave(Address dst) {
 InstructionMark im(this);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
 emit_operand32(rsi, dst);
 }
 void Assembler::fnstcw(Address src) {
 InstructionMark im(this);
-emit_byte(0x9B);
+emit_int8((unsigned char)0x9B);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rdi, src);
 }
 void Assembler::fnstsw_ax() {
-emit_byte(0xdF);
+emit_int8((unsigned char)0xDF);
-emit_byte(0xE0);
+emit_int8((unsigned char)0xE0);
 }
 void Assembler::fprem() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF8);
+emit_int8((unsigned char)0xF8);
 }
 void Assembler::fprem1() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF5);
+emit_int8((unsigned char)0xF5);
 }
 void Assembler::frstor(Address src) {
 InstructionMark im(this);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
 emit_operand32(rsp, src);
 }
 void Assembler::fsin() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xFE);
+emit_int8((unsigned char)0xFE);
 }
 void Assembler::fsqrt() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xFA);
+emit_int8((unsigned char)0xFA);
 }
 void Assembler::fst_d(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
 emit_operand32(rdx, adr);
 }
 void Assembler::fst_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rdx, adr);
 }
 void Assembler::fstp_d(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
 emit_operand32(rbx, adr);
 }
 void Assembler::fstp_d(int index) {
 emit_farith(0xDD, 0xD8, index);
 }
 void Assembler::fstp_s(Address adr) {
 InstructionMark im(this);
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
 emit_operand32(rbx, adr);
 }
 void Assembler::fstp_x(Address adr) {
 InstructionMark im(this);
-emit_byte(0xDB);
+emit_int8((unsigned char)0xDB);
 emit_operand32(rdi, adr);
 }
 void Assembler::fsub(int i) {
 emit_farith(0xD8, 0xE0, i);
 }
 void Assembler::fsub_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rsp, src);
 }
 void Assembler::fsub_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rsp, src);
 }
 void Assembler::fsuba(int i) {
 emit_farith(0xDC, 0xE8, i);
 emit_farith(0xD8, 0xE8, i);
 }
 void Assembler::fsubr_d(Address src) {
 InstructionMark im(this);
-emit_byte(0xDC);
+emit_int8((unsigned char)0xDC);
 emit_operand32(rbp, src);
 }
 void Assembler::fsubr_s(Address src) {
 InstructionMark im(this);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 emit_operand32(rbp, src);
 }
 void Assembler::fsubra(int i) {
 emit_farith(0xDC, 0xE0, i);
 void Assembler::fsubrp(int i) {
 emit_farith(0xDE, 0xE0, i);                    // ST(0) <- ST(1) - ST(0) and pop (Intel manual wrong)
 }
 void Assembler::ftan() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF2);
+emit_int8((unsigned char)0xF2);
-emit_byte(0xDD);
+emit_int8((unsigned char)0xDD);
-emit_byte(0xD8);
+emit_int8((unsigned char)0xD8);
 }
 void Assembler::ftst() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xE4);
+emit_int8((unsigned char)0xE4);
 }
 void Assembler::fucomi(int i) {
 // make sure the instruction is supported (introduced for P6, together with cmov)
 guarantee(VM_Version::supports_cmov(), "illegal instruction");
 guarantee(VM_Version::supports_cmov(), "illegal instruction");
 emit_farith(0xDF, 0xE8, i);
 }
 void Assembler::fwait() {
-emit_byte(0x9B);
+emit_int8((unsigned char)0x9B);
 }
 void Assembler::fxch(int i) {
 emit_farith(0xD9, 0xC8, i);
 }
 void Assembler::fyl2x() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF1);
+emit_int8((unsigned char)0xF1);
 }
 void Assembler::frndint() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xFC);
+emit_int8((unsigned char)0xFC);
 }
 void Assembler::f2xm1() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xF0);
+emit_int8((unsigned char)0xF0);
 }
 void Assembler::fldl2e() {
-emit_byte(0xD9);
+emit_int8((unsigned char)0xD9);
-emit_byte(0xEA);
+emit_int8((unsigned char)0xEA);
 }
 // SSE SIMD prefix byte values corresponding to VexSimdPrefix encoding.
 static int simd_pre[4] = { 0, 0x66, 0xF3, 0xF2 };
 // SSE opcode second byte values (first is 0x0F) corresponding to VexOpcode encoding.
 static int simd_opc[4] = { 0,    0, 0x38, 0x3A };
 // Generate SSE legacy REX prefix and SIMD opcode based on VEX encoding.
 void Assembler::rex_prefix(Address adr, XMMRegister xreg, VexSimdPrefix pre, VexOpcode opc, bool rex_w) {
 if (pre > 0) {
-emit_byte(simd_pre[pre]);
+emit_int8(simd_pre[pre]);
 }
 if (rex_w) {
 prefixq(adr, xreg);
 } else {
 prefix(adr, xreg);
 }
 if (opc > 0) {
-emit_byte(0x0F);
+emit_int8(0x0F);
 int opc2 = simd_opc[opc];
 if (opc2 > 0) {
-emit_byte(opc2);
+emit_int8(opc2);
 }
 }
 }
 int Assembler::rex_prefix_and_encode(int dst_enc, int src_enc, VexSimdPrefix pre, VexOpcode opc, bool rex_w) {
 if (pre > 0) {
-emit_byte(simd_pre[pre]);
+emit_int8(simd_pre[pre]);
 }
 int encode = (rex_w) ? prefixq_and_encode(dst_enc, src_enc) :
 prefix_and_encode(dst_enc, src_enc);
 if (opc > 0) {
-emit_byte(0x0F);
+emit_int8(0x0F);
 int opc2 = simd_opc[opc];
 if (opc2 > 0) {
-emit_byte(opc2);
+emit_int8(opc2);
 }
 }
 return encode;
 }
 prefix(VEX_3bytes);
 int byte1 = (vex_r ? VEX_R : 0) | (vex_x ? VEX_X : 0) | (vex_b ? VEX_B : 0);
 byte1 = (~byte1) & 0xE0;
 byte1 |= opc;
-a_byte(byte1);
+emit_int8(byte1);
 int byte2 = ((~nds_enc) & 0xf) << 3;
 byte2 |= (vex_w ? VEX_W : 0) | (vector256 ? 4 : 0) | pre;
-emit_byte(byte2);
+emit_int8(byte2);
 } else {
 prefix(VEX_2bytes);
 int byte1 = vex_r ? VEX_R : 0;
 byte1 = (~byte1) & 0x80;
 byte1 |= ((~nds_enc) & 0xf) << 3;
 byte1 |= (vector256 ? 4 : 0) | pre;
-emit_byte(byte1);
+emit_int8(byte1);
 }
 }
 void Assembler::vex_prefix(Address adr, int nds_enc, int xreg_enc, VexSimdPrefix pre, VexOpcode opc, bool vex_w, bool vector256){
 bool vex_r = (xreg_enc >= 8);
 }
 void Assembler::emit_simd_arith(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre) {
 InstructionMark im(this);
 simd_prefix(dst, dst, src, pre);
-emit_byte(opcode);
+emit_int8(opcode);
 emit_operand(dst, src);
 }
 void Assembler::emit_simd_arith(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre) {
 int encode = simd_prefix_and_encode(dst, dst, src, pre);
-emit_byte(opcode);
+emit_int8(opcode);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 // Versions with no second source register (non-destructive source).
 void Assembler::emit_simd_arith_nonds(int opcode, XMMRegister dst, Address src, VexSimdPrefix pre) {
 InstructionMark im(this);
 simd_prefix(dst, xnoreg, src, pre);
-emit_byte(opcode);
+emit_int8(opcode);
 emit_operand(dst, src);
 }
 void Assembler::emit_simd_arith_nonds(int opcode, XMMRegister dst, XMMRegister src, VexSimdPrefix pre) {
 int encode = simd_prefix_and_encode(dst, xnoreg, src, pre);
-emit_byte(opcode);
+emit_int8(opcode);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 // 3-operands AVX instructions
 void Assembler::emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds,
 Address src, VexSimdPrefix pre, bool vector256) {
 InstructionMark im(this);
 vex_prefix(dst, nds, src, pre, vector256);
-emit_byte(opcode);
+emit_int8(opcode);
 emit_operand(dst, src);
 }
 void Assembler::emit_vex_arith(int opcode, XMMRegister dst, XMMRegister nds,
 XMMRegister src, VexSimdPrefix pre, bool vector256) {
 int encode = vex_prefix_and_encode(dst, nds, src, pre, vector256);
-emit_byte(opcode);
+emit_int8(opcode);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 #ifndef _LP64
 void Assembler::incl(Register dst) {
 // Don't use it directly. Use MacroAssembler::incrementl() instead.
-emit_byte(0x40 | dst->encoding());
+emit_int8(0x40 | dst->encoding());
 }
 void Assembler::lea(Register dst, Address src) {
 leal(dst, src);
 }
 void Assembler::mov_literal32(Address dst, int32_t imm32,  RelocationHolder const& rspec) {
 InstructionMark im(this);
-emit_byte(0xC7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rax, dst);
 emit_data((int)imm32, rspec, 0);
 }
 void Assembler::mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec) {
 InstructionMark im(this);
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xB8 | encode);
+emit_int8((unsigned char)(0xB8 | encode));
 emit_data((int)imm32, rspec, 0);
 }
 void Assembler::popa() { // 32bit
-emit_byte(0x61);
+emit_int8(0x61);
 }
 void Assembler::push_literal32(int32_t imm32, RelocationHolder const& rspec) {
 InstructionMark im(this);
-emit_byte(0x68);
+emit_int8(0x68);
 emit_data(imm32, rspec, 0);
 }
 void Assembler::pusha() { // 32bit
-emit_byte(0x60);
+emit_int8(0x60);
 }
 void Assembler::set_byte_if_not_zero(Register dst) {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x95);
+emit_int8((unsigned char)0x95);
-emit_byte(0xE0 | dst->encoding());
+emit_int8((unsigned char)(0xE0 | dst->encoding()));
 }
 void Assembler::shldl(Register dst, Register src) {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xA5);
+emit_int8((unsigned char)0xA5);
-emit_byte(0xC0 | src->encoding() << 3 | dst->encoding());
+emit_int8((unsigned char)(0xC0 | src->encoding() << 3 | dst->encoding()));
 }
 void Assembler::shrdl(Register dst, Register src) {
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAD);
+emit_int8((unsigned char)0xAD);
-emit_byte(0xC0 | src->encoding() << 3 | dst->encoding());
+emit_int8((unsigned char)(0xC0 | src->encoding() << 3 | dst->encoding()));
 }
 #else // LP64
 void Assembler::set_byte_if_not_zero(Register dst) {
 int enc = prefix_and_encode(dst->encoding(), true);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x95);
+emit_int8((unsigned char)0x95);
-emit_byte(0xE0 | enc);
+emit_int8((unsigned char)(0xE0 | enc));
 }
 // 64bit only pieces of the assembler
 // This should only be used by 64bit instructions that can use rip-relative
 // it cannot be used by instructions that want an immediate value.
 }
 void Assembler::adcq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x13);
+emit_int8(0x13);
 emit_operand(dst, src);
 }
 void Assembler::adcq(Register dst, Register src) {
 (int) prefixq_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::addq(Address dst, Register src) {
 InstructionMark im(this);
 prefixq(dst, src);
-emit_byte(0x01);
+emit_int8(0x01);
 emit_operand(src, dst);
 }
 void Assembler::addq(Register dst, int32_t imm32) {
 (void) prefixq_and_encode(dst->encoding());
 }
 void Assembler::addq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x03);
+emit_int8(0x03);
 emit_operand(dst, src);
 }
 void Assembler::addq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::andq(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rsp, dst, 4);
 emit_long(imm32);
 }
 void Assembler::andq(Register dst, int32_t imm32) {
 }
 void Assembler::andq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x23);
+emit_int8(0x23);
 emit_operand(dst, src);
 }
 void Assembler::andq(Register dst, Register src) {
 (int) prefixq_and_encode(dst->encoding(), src->encoding());
 emit_arith(0x23, 0xC0, dst, src);
 }
 void Assembler::bsfq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBC);
+emit_int8((unsigned char)0xBC);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::bsrq(Register dst, Register src) {
 assert(!VM_Version::supports_lzcnt(), "encoding is treated as LZCNT");
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBD);
+emit_int8((unsigned char)0xBD);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::bswapq(Register reg) {
 int encode = prefixq_and_encode(reg->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xC8 | encode);
+emit_int8((unsigned char)(0xC8 | encode));
 }
 void Assembler::cdqq() {
 prefix(REX_W);
-emit_byte(0x99);
+emit_int8((unsigned char)0x99);
 }
 void Assembler::clflush(Address adr) {
 prefix(adr);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
 emit_operand(rdi, adr);
 }
 void Assembler::cmovq(Condition cc, Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x40 | cc);
+emit_int8(0x40 | cc);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cmovq(Condition cc, Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0x40 | cc);
+emit_int8(0x40 | cc);
 emit_operand(dst, src);
 }
 void Assembler::cmpq(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rdi, dst, 4);
 emit_long(imm32);
 }
 void Assembler::cmpq(Register dst, int32_t imm32) {
 }
 void Assembler::cmpq(Address dst, Register src) {
 InstructionMark im(this);
 prefixq(dst, src);
-emit_byte(0x3B);
+emit_int8(0x3B);
 emit_operand(src, dst);
 }
 void Assembler::cmpq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::cmpq(Register dst, Address  src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x3B);
+emit_int8(0x3B);
 emit_operand(dst, src);
 }
 void Assembler::cmpxchgq(Register reg, Address adr) {
 InstructionMark im(this);
 prefixq(adr, reg);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB1);
+emit_int8((unsigned char)0xB1);
 emit_operand(reg, adr);
 }
 void Assembler::cvtsi2sdq(XMMRegister dst, Register src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode_q(dst, dst, src, VEX_SIMD_F2);
-emit_byte(0x2A);
+emit_int8(0x2A);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvtsi2sdq(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 InstructionMark im(this);
 simd_prefix_q(dst, dst, src, VEX_SIMD_F2);
-emit_byte(0x2A);
+emit_int8(0x2A);
 emit_operand(dst, src);
 }
 void Assembler::cvtsi2ssq(XMMRegister dst, Register src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 int encode = simd_prefix_and_encode_q(dst, dst, src, VEX_SIMD_F3);
-emit_byte(0x2A);
+emit_int8(0x2A);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvtsi2ssq(XMMRegister dst, Address src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 InstructionMark im(this);
 simd_prefix_q(dst, dst, src, VEX_SIMD_F3);
-emit_byte(0x2A);
+emit_int8(0x2A);
 emit_operand(dst, src);
 }
 void Assembler::cvttsd2siq(Register dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_F2);
-emit_byte(0x2C);
+emit_int8(0x2C);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::cvttss2siq(Register dst, XMMRegister src) {
 NOT_LP64(assert(VM_Version::supports_sse(), ""));
 int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_F3);
-emit_byte(0x2C);
+emit_int8(0x2C);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::decl(Register dst) {
 // Don't use it directly. Use MacroAssembler::decrementl() instead.
 // Use two-byte form (one-byte form is a REX prefix in 64-bit mode)
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xC8 | encode);
+emit_int8((unsigned char)(0xC8 | encode));
 }
 void Assembler::decq(Register dst) {
 // Don't use it directly. Use MacroAssembler::decrementq() instead.
 // Use two-byte form (one-byte from is a REX prefix in 64-bit mode)
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xC8 | encode);
+emit_int8(0xC8 | encode);
 }
 void Assembler::decq(Address dst) {
 // Don't use it directly. Use MacroAssembler::decrementq() instead.
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rcx, dst);
 }
 void Assembler::fxrstor(Address src) {
 prefixq(src);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
 emit_operand(as_Register(1), src);
 }
 void Assembler::fxsave(Address dst) {
 prefixq(dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAE);
+emit_int8((unsigned char)0xAE);
 emit_operand(as_Register(0), dst);
 }
 void Assembler::idivq(Register src) {
 int encode = prefixq_and_encode(src->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 }
 void Assembler::imulq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xAF);
+emit_int8((unsigned char)0xAF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::imulq(Register dst, Register src, int value) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
 if (is8bit(value)) {
-emit_byte(0x6B);
+emit_int8(0x6B);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
-emit_byte(value & 0xFF);
+emit_int8(value & 0xFF);
 } else {
-emit_byte(0x69);
+emit_int8(0x69);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 emit_long(value);
 }
 }
 void Assembler::incl(Register dst) {
 // Don't use it directly. Use MacroAssembler::incrementl() instead.
 // Use two-byte form (one-byte from is a REX prefix in 64-bit mode)
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::incq(Register dst) {
 // Don't use it directly. Use MacroAssembler::incrementq() instead.
 // Use two-byte form (one-byte from is a REX prefix in 64-bit mode)
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::incq(Address dst) {
 // Don't use it directly. Use MacroAssembler::incrementq() instead.
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rax, dst);
 }
 void Assembler::lea(Register dst, Address src) {
 leaq(dst, src);
 }
 void Assembler::leaq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x8D);
+emit_int8((unsigned char)0x8D);
 emit_operand(dst, src);
 }
 void Assembler::mov64(Register dst, int64_t imm64) {
 InstructionMark im(this);
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xB8 | encode);
+emit_int8((unsigned char)(0xB8 | encode));
 emit_int64(imm64);
 }
 void Assembler::mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec) {
 InstructionMark im(this);
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xB8 | encode);
+emit_int8(0xB8 | encode);
 emit_data64(imm64, rspec);
 }
 void Assembler::mov_narrow_oop(Register dst, int32_t imm32, RelocationHolder const& rspec) {
 InstructionMark im(this);
 int encode = prefix_and_encode(dst->encoding());
-emit_byte(0xB8 | encode);
+emit_int8((unsigned char)(0xB8 | encode));
 emit_data((int)imm32, rspec, narrow_oop_operand);
 }
 void Assembler::mov_narrow_oop(Address dst, int32_t imm32,  RelocationHolder const& rspec) {
 InstructionMark im(this);
 prefix(dst);
-emit_byte(0xC7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rax, dst, 4);
 emit_data((int)imm32, rspec, narrow_oop_operand);
 }
 void Assembler::cmp_narrow_oop(Register src1, int32_t imm32, RelocationHolder const& rspec) {
 InstructionMark im(this);
 int encode = prefix_and_encode(src1->encoding());
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 emit_data((int)imm32, rspec, narrow_oop_operand);
 }
 void Assembler::cmp_narrow_oop(Address src1, int32_t imm32, RelocationHolder const& rspec) {
 InstructionMark im(this);
 prefix(src1);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rax, src1, 4);
 emit_data((int)imm32, rspec, narrow_oop_operand);
 }
 void Assembler::lzcntq(Register dst, Register src) {
 assert(VM_Version::supports_lzcnt(), "encoding is treated as BSR");
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBD);
+emit_int8((unsigned char)0xBD);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movdq(XMMRegister dst, Register src) {
 // table D-1 says MMX/SSE2
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 int encode = simd_prefix_and_encode_q(dst, src, VEX_SIMD_66);
-emit_byte(0x6E);
+emit_int8(0x6E);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movdq(Register dst, XMMRegister src) {
 // table D-1 says MMX/SSE2
 NOT_LP64(assert(VM_Version::supports_sse2(), ""));
 // swap src/dst to get correct prefix
 int encode = simd_prefix_and_encode_q(src, dst, VEX_SIMD_66);
-emit_byte(0x7E);
+emit_int8(0x7E);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x8B);
+emit_int8((unsigned char)0x8B);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x8B);
+emit_int8((unsigned char)0x8B);
 emit_operand(dst, src);
 }
 void Assembler::movq(Address dst, Register src) {
 InstructionMark im(this);
 prefixq(dst, src);
-emit_byte(0x89);
+emit_int8((unsigned char)0x89);
 emit_operand(src, dst);
 }
 void Assembler::movsbq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBE);
+emit_int8((unsigned char)0xBE);
 emit_operand(dst, src);
 }
 void Assembler::movsbq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBE);
+emit_int8((unsigned char)0xBE);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movslq(Register dst, int32_t imm32) {
 // dbx shows movslq(rcx, 3) as movq     $0x0000000049000000,(%rbx)
 // and movslq(r8, 3); as movl     $0x0000000048000000,(%rbx)
 // as a result we shouldn't use until tested at runtime...
 ShouldNotReachHere();
 InstructionMark im(this);
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xC7 | encode);
+emit_int8((unsigned char)(0xC7 | encode));
 emit_long(imm32);
 }
 void Assembler::movslq(Address dst, int32_t imm32) {
 assert(is_simm32(imm32), "lost bits");
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0xC7);
+emit_int8((unsigned char)0xC7);
 emit_operand(rax, dst, 4);
 emit_long(imm32);
 }
 void Assembler::movslq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x63);
+emit_int8(0x63);
 emit_operand(dst, src);
 }
 void Assembler::movslq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x63);
+emit_int8(0x63);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movswq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xBF);
+emit_int8((unsigned char)0xBF);
 emit_operand(dst, src);
 }
 void Assembler::movswq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xBF);
+emit_int8((unsigned char)0xBF);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::movzbq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xB6);
+emit_int8((unsigned char)0xB6);
 emit_operand(dst, src);
 }
 void Assembler::movzbq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xB6);
+emit_int8((unsigned char)0xB6);
-emit_byte(0xC0 | encode);
+emit_int8(0xC0 | encode);
 }
 void Assembler::movzwq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xB7);
+emit_int8((unsigned char)0xB7);
 emit_operand(dst, src);
 }
 void Assembler::movzwq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xB7);
+emit_int8((unsigned char)0xB7);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::negq(Register dst) {
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xD8 | encode);
+emit_int8((unsigned char)(0xD8 | encode));
 }
 void Assembler::notq(Register dst) {
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)(0xD0 | encode));
 }
 void Assembler::orq(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0x81);
+emit_int8((unsigned char)0x81);
 emit_operand(rcx, dst, 4);
 emit_long(imm32);
 }
 void Assembler::orq(Register dst, int32_t imm32) {
 }
 void Assembler::orq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x0B);
+emit_int8(0x0B);
 emit_operand(dst, src);
 }
 void Assembler::orq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 }
 void Assembler::popcntq(Register dst, Address src) {
 assert(VM_Version::supports_popcnt(), "must support");
 InstructionMark im(this);
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 prefixq(src, dst);
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xB8);
+emit_int8((unsigned char)0xB8);
 emit_operand(dst, src);
 }
 void Assembler::popcntq(Register dst, Register src) {
 assert(VM_Version::supports_popcnt(), "must support");
-emit_byte(0xF3);
+emit_int8((unsigned char)0xF3);
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x0F);
+emit_int8((unsigned char)0x0F);
-emit_byte(0xB8);
+emit_int8((unsigned char)0xB8);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 void Assembler::popq(Address dst) {
 InstructionMark im(this);
 prefixq(dst);
-emit_byte(0x8F);
+emit_int8((unsigned char)0x8F);
 emit_operand(rax, dst);
 }
 void Assembler::pusha() { // 64bit
 // we have to store original rsp.  ABI says that 128 bytes
 }
 void Assembler::pushq(Address src) {
 InstructionMark im(this);
 prefixq(src);
-emit_byte(0xFF);
+emit_int8((unsigned char)0xFF);
 emit_operand(rsi, src);
 }
 void Assembler::rclq(Register dst, int imm8) {
 assert(isShiftCount(imm8 >> 1), "illegal shift count");
 int encode = prefixq_and_encode(dst->encoding());
 if (imm8 == 1) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)(0xD0 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xD0 | encode);
+emit_int8((unsigned char)(0xD0 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 void Assembler::sarq(Register dst, int imm8) {
 assert(isShiftCount(imm8 >> 1), "illegal shift count");
 int encode = prefixq_and_encode(dst->encoding());
 if (imm8 == 1) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 void Assembler::sarq(Register dst) {
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xF8 | encode);
+emit_int8((unsigned char)(0xF8 | encode));
 }
 void Assembler::sbbq(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefixq(dst);
 }
 void Assembler::sbbq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x1B);
+emit_int8(0x1B);
 emit_operand(dst, src);
 }
 void Assembler::sbbq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 void Assembler::shlq(Register dst, int imm8) {
 assert(isShiftCount(imm8 >> 1), "illegal shift count");
 int encode = prefixq_and_encode(dst->encoding());
 if (imm8 == 1) {
-emit_byte(0xD1);
+emit_int8((unsigned char)0xD1);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 } else {
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 }
 void Assembler::shlq(Register dst) {
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xE0 | encode);
+emit_int8((unsigned char)(0xE0 | encode));
 }
 void Assembler::shrq(Register dst, int imm8) {
 assert(isShiftCount(imm8 >> 1), "illegal shift count");
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
-emit_byte(0xE8 | encode);
+emit_int8((unsigned char)(0xE8 | encode));
-emit_byte(imm8);
+emit_int8(imm8);
 }
 void Assembler::shrq(Register dst) {
 int encode = prefixq_and_encode(dst->encoding());
-emit_byte(0xD3);
+emit_int8((unsigned char)0xD3);
-emit_byte(0xE8 | encode);
+emit_int8(0xE8 | encode);
 }
 void Assembler::subq(Address dst, int32_t imm32) {
 InstructionMark im(this);
 prefixq(dst);
 }
 void Assembler::subq(Address dst, Register src) {
 InstructionMark im(this);
 prefixq(dst, src);
-emit_byte(0x29);
+emit_int8(0x29);
 emit_operand(src, dst);
 }
 void Assembler::subq(Register dst, int32_t imm32) {
 (void) prefixq_and_encode(dst->encoding());
 }
 void Assembler::subq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x2B);
+emit_int8(0x2B);
 emit_operand(dst, src);
 }
 void Assembler::subq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 // doesn't support sign-extension of
 // 8bit operands
 int encode = dst->encoding();
 if (encode == 0) {
 prefix(REX_W);
-emit_byte(0xA9);
+emit_int8((unsigned char)0xA9);
 } else {
 encode = prefixq_and_encode(encode);
-emit_byte(0xF7);
+emit_int8((unsigned char)0xF7);
-emit_byte(0xC0 | encode);
+emit_int8((unsigned char)(0xC0 | encode));
 }
 emit_long(imm32);
 }
 void Assembler::testq(Register dst, Register src) {
 }
 void Assembler::xaddq(Address dst, Register src) {
 InstructionMark im(this);
 prefixq(dst, src);
-emit_byte(0x0F);
+emit_int8(0x0F);
-emit_byte(0xC1);
+emit_int8((unsigned char)0xC1);
 emit_operand(src, dst);
 }
 void Assembler::xchgq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x87);
+emit_int8((unsigned char)0x87);
 emit_operand(dst, src);
 }
 void Assembler::xchgq(Register dst, Register src) {
 int encode = prefixq_and_encode(dst->encoding(), src->encoding());
-emit_byte(0x87);
+emit_int8((unsigned char)0x87);
-emit_byte(0xc0 | encode);
+emit_int8((unsigned char)(0xc0 | encode));
 }
 void Assembler::xorq(Register dst, Register src) {
 (void) prefixq_and_encode(dst->encoding(), src->encoding());
 emit_arith(0x33, 0xC0, dst, src);
 }
 void Assembler::xorq(Register dst, Address src) {
 InstructionMark im(this);
 prefixq(src, dst);
-emit_byte(0x33);
+emit_int8(0x33);
 emit_operand(dst, src);
 }
 #endif // !LP64

Mercurial > hg > graal-jvmci-8

comparison src/cpu/x86/vm/assembler_x86.cpp @ 7430:d02120b7a34f