| .set noreorder |
| .global __clone |
| .type __clone,@function |
| __clone: |
| # Save function pointer and argument pointer on new thread stack |
| and $5, $5, -16 # aligning stack to double word |
| dsubu $5, $5, 16 |
| sd $4, 0($5) # save function pointer |
| sd $7, 8($5) # save argument pointer |
| |
| # Shuffle (fn,sp,fl,arg,ptid,tls,ctid) to (fl,sp,ptid,tls,ctid) |
| # sys_clone(u64 flags, u64 ustack_base, u64 parent_tidptr, u64 child_tidptr, u64 tls) |
| move $4, $6 |
| move $6, $8 |
| move $7, $9 |
| move $8, $10 |
| li $2, 5055 |
| syscall |
| beq $7, $0, 1f |
| nop |
| jr $ra |
| dsubu $2, $0, $2 |
| 1: beq $2, $0, 1f |
| nop |
| jr $ra |
| nop |
| 1: ld $25, 0($sp) # function pointer |
| ld $4, 8($sp) # argument pointer |
| jalr $25 # call the user's function |
| nop |
| move $4, $2 |
| li $2, 5058 |
| syscall |
