The following code generates an error message when we invoke the assembler. What is wrong (Assume 64 bit machine) movb $0xB2, (%ax)* Mismatch between instruction suffix and register ID Cannot use this register for addresses Destination operand incorrect size Cannot have immediate as destination No register with this name Cannot have both source and destination be memory references

The following code generates an error message when we invoke the assembler. What is wrong (Assume 64 bit machine) movb $0xB2, (%ax)* Mismatch between instruction suffix and register ID Cannot use this register for addresses Destination operand incorrect size Cannot have immediate as destination No register with this name Cannot have both source and destination be memory references

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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Design an expanding opcode to allow the following to be encoded in a 32-bit instruction. 15 instructions with 12-bit addresses and 4-bit register numbers. 80 instructions with no address or registers.
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Given the following instruction format specification 19 15 14 13 11 10 8 7 M Dest Op1 Opcode Op2 11101100110100110001 0 what binary value will determine the operation performed by the following machine code instruction? Please provide answer in binary, include only the bits which determine the operation performed.
Suppose the opcode of an MIPS instruction is 8 in decimal, and the rest of the machine code is 309FC88 in hexadecimal (from high-order bit to low-order bit). What is the instruction? When showing the registers, use names (e.g. $t0, $s2) instead of indices (e.g $8, $17). For branch instructions, show offset in place of label, e.g. beq $t1, $t2, 92. Answer:
Please solve and show all work. For the following C statement, what is the corresponding MIPS assembly code? Assume that the variables f, g, h, i, and j are assigned to registers $s0, $s1, $s2, $s3, and $s4, respectively. Assume that the base address of the arrays A and B are in registers $s6 and $s7, respectively. Assume that the elements of the arrays A and B are 8-byte words: f = (g+i+2) + (h − 8); B[8] = A[i-9] + A[j+8] + 7;
A simple two-pass assembler does the following in the first pass: A. It allocates space for the literals. B. It computes the total length of the program. C. It builds the symbol table for the symbols and their values. D. It generates code for all the load and store register instructions. E. None of the above.
Convert the given hex value to its R-format MIPS instruction by completing the following table. The instruction and letters for registers must be in lower case. DO NOT TYPE DOLLAR SIGNS WITH REGISTERS. Hex Opcode (decimal) rs (decimal) rt (decimal) rd (decimal) funct (decimal) Instruction 02488822 O 18 16 17 34 sub s4 $$1 " $ to " LA
3. For each instruction in the table, write 8 hexadecimal digits that represent the 32 bits in the destination register after the instruction is executed. Assume s0 is 0x98AB3C6A, s1 is 0x20503666. Instructions to, 50, s1 t1, so, s1 t2, so, s1 t3, 50, 51 addi t4, 50, 0x210 wwwwwww andi t5, 50, -16 add and or xor slli t6, 50, 12 srai s2, 50, 8 Dest. reg. in 8 hexadecimal digits
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