<dec f='src/src/sys/arch/x86/include/fpu.h' l='21' type='void fpudna(struct trapframe * )'/>
<def f='src/src/sys/arch/x86/x86/fpu.c' l='334' ll='422' type='void fpudna(struct trapframe * frame)'/>
<doc f='src/src/sys/arch/x86/x86/fpu.c' l='325'>/*
 * Implement device not available (DNA) exception
 *
 * If we were the last lwp to use the FPU, we can simply return.
 * Otherwise, we save the previous state, if necessary, and restore
 * our last saved state.
 *
 * Called directly from the trap 0x13 entry with interrupts still disabled.
 */</doc>
