ref: 7cd4f442cf238c5de486b54deb0bfd3a3f7a0516
dir: /lib/math/ftrap-impl+posixy-x64.s/
.globl _math$fptrap .globl math$fptrap _math$fptrap: math$fptrap subq $4,%rsp wait stmxcsr (%rsp) movl (%rsp),%rax andl $~0x1f80,%rax testb %rdi,%rdi jnz .apply orl $0x1f80,%rax .apply: movl %rax,(rsp) ldmxcsr (%rsp) addq $4,%rsp ret