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| | .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
jr $25 # call the user's function
nop
|