Consider a proposed new instruction named repeat. combine's a loop's condition check and counter decre instruction. For example repeat x29, loop would do the following: if (x29 > 0) { x29=x29-1; goto loop; } If this instruction were to be added to the RISC-V inst is to allow for very large loop sizes, what is the most a format? I-type S-type J-type or U-type R-type B-type

Consider a proposed new instruction named repeat. combine's a loop's condition check and counter decre instruction. For example repeat x29, loop would do the following: if (x29 > 0) { x29=x29-1; goto loop; } If this instruction were to be added to the RISC-V inst is to allow for very large loop sizes, what is the most a format? I-type S-type J-type or U-type R-type B-type

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Orthogonality is the property of an instruction set design to have a "backup" instruction for every other instruction that accomplishes the same purpose as the original instruction. You are free to enlighten me as to whether or not it is true.
4. A particular piece of loop iteration requires 6 registers, 2 of which are used to track array indices / loop counters. The other 4 registers are used to hold load values, compute results and store results. If the architecture has 32 general-purpose registers, then how many times can the loop be unrolled by the compiler?
Question 2 SUBMITTED Equivalence Find an alternative first instruction for the x86-64 code below using test that does not change the behavior. cmpq %rdi, $0 je Label Tip: Answer using the form: " , " with a single space between each of the three parts and include the instruction suffix. Submitted
Assignment-04. A non-pipelined CPU has 12 general purpose registers (RO, R1, R2, . Following operation are supported: R12), .... ADD Ra, Rb, Rr Add Ra to Rb and store the result in Rr MUL Ra, Rb, Rr Multiply Ra to Rb and store the result in Rr MUL operations takes two dlock cycles, ADD takes one clock cycle. Calculate minimum number of clock cycles required to compute the value of the expression XY +XYZ + YZ The variables X,Y, Z are initially available in registers RO, R1 and R2 and contents of these registers must not be modified,
Description: Implement a transistor-level schematic of a computational unit/ALU that can perform the following operations. XOR ● XNOR Multiplication Addition Subtraction ● Rotate Shift Right Magnitude Comparator ● Equality Comparator The computational unit/ALU has a decoder to decode an instruction and a multiplexer to select outputs of different operations. Data inputs are 4-bit wide. Make sure you test your design for all the operations listed above.
The 32-bit RISC-V base integer instruction set (rv32i) does not support multiplication and division operations. To deal with this, a compiler may call a function when a multiplication is needed. For example, gcc expects that a function - mulsi3(unsigned int a, unsigned int b) is provided to multiply two integers. A multiplication can be carried out by repeated additions and shifts: unsigned int -_mulsi3 (unsigned int a, unsigned int b) { unsigned int r = 0; while (a) { if (a & 1) { r += b; } a >>= 1; b <<= 1; } return r; } a) Translate the above C code into equivalent RISC-V rv32i assembler code. Comment the as- sembler code to explain how the calculation proceeds. Note that the arguments are passed via the registers a0 (x10) and a1 (x11) and that the result is returned in a0 (x10). b) Does the function need function call prolog and epilog? Explain why or why not. You are invited to use emulsiV to develop and test your assembler code.
We have the following C function compiled to RISC-V RV321. The following assembly sequence is equivalent to the C code snippet, but an assembly instruction is missing. what should be XXXX to have an equivalent code? int fun(char a) { fcall(); return a ^ 0x50; } fun: sp, sp,-16 ra,12(sp) s2,8(sp) s2, a0 addi SW SW mv call XXX fcall ra,12(sp) 52,8(sp) lw lw addi sp,sp, 16 jr ra O xori x10,s2,51 xori a0,s2,51 O Another instruction xori a0,s0,80 xori x10,s2,80
change the floowing C code to assembly x86-64,. make sure to add instruction suffix (b, w, l, or q) and add comment #include unsigned char bye (unsigned char p){ return(p>>1)|((p&0x81)<<7); } so like the code would look like push rbp movq rsp, rbp
The following Mic1 microcode excerpt shows support for a possible 7 bit opcode, 8 bit integer argument machine instruction (organized like the INSP instruction). This part of the microcode will be reached after the instruction opcode has been parsed and identified by earlier parts of the microcode and while the IR contains the complete instruction from memory (as usual for the IR). 100:a := band(smask, ir); 101:a := a + (-1); if n goto 0; 102:ac := rshift(ac); goto 101; What does this instruction do ? Left shift the AC places Right shift the AC places Left circular shift the AC places Right circular shift the AC places Multiple the AC by 2^
Orthogonality refers to the presence of a "backup" instruction in an instruction set design that may be used in place of any other instruction that achieves the same aim. The onus is on you to confirm or refute my assumption.
The inclusion of a "backup" instruction in a design for an instruction set is what is meant by the term "orthogonality." This "backup" instruction may be substituted for any other instruction that accomplishes the same goal. You now have the responsibility of proving or disproving my hypothesis.
Find the pyhsical destination adress of last instruction below. MOV BX,0AAH MOV AX,1BBH MOV DS,AX MOV[BX],AX