In reply to xiao hui
hi,iwhat i should do when fence.i instr exec on a one hart sim?

In reply to Sang
I know fence instn is used for synchronizing tasks

In reply to Sang
I know fence instn is used for synchronizing tasks

In reply to aditya
suppose i have to store
li x1, 0xdeadbeef

Hello everyone,

I have tried to generate assembly code for compressed instructions. Below(case 1) is the one which I have got. But,I need the case 2 format. Can you suggest whats the difference between them?

Maybe ,I could proceed and get the desired format.

For checking whether I have done correct,I tried to compile the assembly code. But,my toolchain doesnt support compressed instructions. So, if anyone can point out the mistake or difference between the 2 cases, it would be helpful.


My assembly code for compressed instn (ebreak instn)is as follows:

Case-1(c.ebreak)

0000000000000000 <ebreak>:
      push   %rbp
      mov    %rsp,%rbp
      mov    $0x100073,%eax
      pop    %rbp
      retq   

Why there is a "%" symbol in this code? What does it mean?

But I need it in following format:
pop eax ;
pop ebx ;

mov eax,1
mov ebx,0
int 80h ; exit

Whats the difference between these 2 codes?