AMD SimNow Simulator 4.4.5, User Manual

Page: 201 / 269

AMD Confidential
User Manual November 21
st
, 2008
Appendix A 189

+i – Specifies an x87 floating-point stack operand, ST( i ). The value is used only
with x87 floating-point instructions. It is added to the hexadecimal byte on the
left, forming a one-byte opcode. Valid values range from 0 to 7.
A.6.2 General Purpose Instructions
This chapter describes the function, mnemonic syntax, and opcodes that the simulator
simulates. General-purpose instructions are used in basic software execution. Most of
these instructions load, store, or operate on data location in the general-purpose registers
(GPRs), in memory, or in both. The remaining instructions are used to alter the sequential
flow of the program by branching to other locations within the program, or to entirely
different programs.
Instruction
Supported
Mnemonic Opcode Description
AAA 37 Create an unpacked BCD number.
AAD D5 Adjust two BCD digits in AL and AH.
AAM D4
Create a pair of unpacked BCD values
in AH and AL.
AAS 3F
Create an unpacked BCD number from
the contents of the AL register.
ADC AL, imm8 14 ib Add imm8 to AL + CF.
ADC AL, imm16 14 iw Add imm16 to AX + CF.
ADC EAX, imm32 15 id Add imm32 to EAX + CF.
ADC RAX, imm32 15 id Add sign-ext. imm32 to RAX + CF.
ADC reg/mem8,imm8 80 /2 ib Add imm8 to reg/mem8 + CF.
ADC reg/mem16,imm16 81 /2 iw Add imm16 to reg/mem16 + CF.
ADC reg/mem32,imm32 81 /2 id Add imm32 to reg/mem32 + CF.
ADC reg/mem64,imm32 81 /2 id
Add sign-ext. imm32 to reg/mem64 +
CF.
ADC reg/mem16,imm8 83 /2 ib Add sign-ext. imm8 to reg/mem16 + CF.
ADC reg/mem32,imm8 83 /2 ib Add sign-ext. imm8 to reg/mem32 + CF.
ADC reg/mem64,imm8 83 /2 ib Add sign-ext. imm8 to reg/mem64 + CF.
ADC reg/mem8,reg8 10 /r Add reg8 to reg/mem8 + CF.
ADC reg/mem16,reg16 11 /r Add reg16 to reg/mem16 + CF.
ADC reg/mem32,reg32 11 /r Add reg32 to reg/mem32 + CF.
ADC reg/mem64,reg64 11 /r Add reg64 to reg/mem64 + CF.
ADC reg8,reg/mem8 12 /r Add reg/mem8 to reg8 + CF.
ADC reg16,reg/mem16 13 /r Add reg/mem16 to reg16 + CF.
ADC reg32,reg/mem32 13 /r Add reg/mem32 to reg32 + CF.
ADC reg64,reg/mem64 13 /r Add reg/mem64 to reg64 + CF.
ADD AL, imm8 04 ib Add imm8 to AL.
ADD AX, imm16 05 iw Add imm16 to AX.
ADD EAX, imm32 05 id ADD imm32 to EAX.
ADD RAX, imm64 05 id ADD imm64 to RAX.
ADD reg/mem8,imm8 80 /0 ib Add imm8 to reg/mem8 .
ADD reg/mem16,imm16 81 /0 iw Add imm16 to reg/mem16 .
ADD reg/mem32,imm32 81 /0 id Add imm32 to reg/mem32 .
ADD reg/mem64,imm32 81 /0 id Add sign-ext. imm32 to reg/mem64 .
ADD reg/mem16,imm8 83 /0 ib Add sign-ext. imm8 to reg/mem16 .
ADD reg/mem32,imm8 83 /0 ib Add sign-ext. imm8 to reg/mem32 .
ADD reg/mem64,imm8 83 /0 ib Add sign-ext. imm8 to reg/mem64 .
ADD reg/mem8,reg8 00 /r Add reg8 to reg/mem8 .
ADD reg/mem16,reg16 01 /r Add reg16 to reg/mem16 .