The PowerPC 604 RISC Microprocessor - eisber.net

d2fDouble float to single floatSyntaxStack:d2/= 144 )tulue-wordl , value-word2 => ..., resultvalue must be a double-precision floating point number. It is converted to a single-precision floatingpoint number. If overflow occurs, the result must be infinity with the same sign as value. The resultreplaces value on the stack.3.11 Control Transfer InstructionsifeqBranch if equal to 0Syntax:'fey = 153brunchbrsetbronchb)re2int2byteint2charint2shortInteger to signed byteSyntax:Integer to shortSyntax:I inab)se 145 1Stack: ..., value => ..., resultvalue must be an integer. It is truncated to a signed 8-bit result, then sign extended to an integer. Theresult replaces value on the stack.Integer to charSyntaxStack: ..., value =>I int2chur = 146 I, resultvalue most be an integer. It is truncated to an unsigned 16-bit result, then zero extended to an integer.The result replaces valise on the stack.Slack:fins2shors = 147 Ivalue => ..., resultvalue must be an integer. It is truncated to a signed 16-bit result, then sign extended to an integer. Theresult replaces value on the stack.ifnullifltStack: ..., value =>value must be an integer. It is popped from the stack. If value is zero, branclibytel and brattchlsyle2 areused to construct a signed 16-bit offset. Execution proceeds at that offset from the address of thisinstruction. Otherwise execution proceeds at the instruction following the i f eq.Branch if nullSyntax:Stack: .. , valise =>Branch if less than 0Syntax:Own = 198branchksehronchbyte2value must be a reference to an object. It is popped from the stack. If valise is nu 1 1, branclthyte I andbranclthyle2 are used to construct a signed 16.bit offset. Execution proceeds at that offset from theaddress of this instruction. Otherwise execution proceeds at the instruction following the i f nullStack: ..., value =>lJlr = 155bronchhyte Ibranclthyse2value must be an integer. It is popped from the stack. if value is less than zero, branchbytel andbranchlsyte2 are used to construct a signed 16-bit offset. Execution proceeds at that offset from theaddress of this instruction. Otherwise execution proceeds at the instruction following the i f 1 t..August 22. 1995Java Virtual Machine Specification55 56 lava Virtual Machine Smirscation August 22 I994