bfba15c9b9
unlike other archs, the mips version of clone was not doing anything to align the stack pointer. this seems to have been the cause for some SIGBUS crashes that were observed in posix_spawn.
29 lines
485 B
ArmAsm
29 lines
485 B
ArmAsm
.set noreorder
|
|
.global __clone
|
|
.type __clone,@function
|
|
__clone:
|
|
# Save function pointer and argument pointer on new thread stack
|
|
and $5, $5, -8
|
|
subu $5, $5, 16
|
|
sw $4, 0($5)
|
|
sw $7, 4($5)
|
|
# Shuffle (fn,sp,fl,arg,ptid,tls,ctid) to (fl,sp,ptid,tls,ctid)
|
|
move $4, $6
|
|
lw $6, 16($sp)
|
|
lw $7, 20($sp)
|
|
lw $9, 24($sp)
|
|
sw $9, 16($sp)
|
|
li $2, 4120
|
|
syscall
|
|
beq $7, $0, 1f
|
|
nop
|
|
jr $ra
|
|
subu $2, $0, $2
|
|
1: beq $2, $0, 1f
|
|
nop
|
|
jr $ra
|
|
nop
|
|
1: lw $25, 0($sp)
|
|
lw $4, 4($sp)
|
|
jr $25
|
|
nop
|