Instructions O O O O O O O O O O O O O O O O ADD R$, R%, R& ADD R$, R%, #imm SUB R$, R%, R& SUB R$, R%, #imm AND R$, R%, R& // logical AND AND R$, R%, #imm ORR R$, R%, R& // logical OR ORR R$, R%, #imm EOR R$, R%, R& // logical XOR EOR R$, R%, #imm CMP R$, R% CMP R$, #imm BGE, MOV R$, R%// R$ =R% MOV R$, #imm MOR R$, R%, LSL #imm (or LSR #imm) BLT, BGT, BLE, BEQ, BNE, B 1. (30 points) Write an assembly code for the following C code. int a, b, c; switch (a ) { case 0: b++; break; case 1: b--; break; case 2: c++; break; default: b = 0; c = 1; break; } Assume that a is in R0, b is in R1, and c is in R2. The exit point (the end of the code) could be just an address label.