1.set noreorder 2.global __clone 3.type __clone,@function 4__clone: 5 # Save function pointer and argument pointer on new thread stack 6 and $5, $5, -16 # aligning stack to double word 7 subu $5, $5, 16 8 sw $4, 0($5) # save function pointer 9 sw $7, 4($5) # save argument pointer 10 11 # Shuffle (fn,sp,fl,arg,ptid,tls,ctid) to (fl,sp,ptid,tls,ctid) 12 # sys_clone(u64 flags, u64 ustack_base, u64 parent_tidptr, u64 child_tidptr, u64 tls) 13 move $4, $6 14 move $6, $8 15 move $7, $9 16 move $8, $10 17 li $2, 6055 18 syscall 19 beq $7, $0, 1f 20 nop 21 jr $ra 22 subu $2, $0, $2 231: beq $2, $0, 1f 24 nop 25 jr $ra 26 nop 271: lw $25, 0($sp) # function pointer 28 lw $4, 4($sp) # argument pointer 29 jr $25 # call the user's function 30 nop 31