20 #ifndef _COBALT_X86_ASM_THREAD_H
21 #define _COBALT_X86_ASM_THREAD_H
23 #include <asm-generic/xenomai/thread.h>
24 #include <asm/xenomai/wrappers.h>
26 typedef union thread_xstate x86_fpustate;
27 #define x86_fpustate_ptr(t) ((t)->fpu.state)
37 unsigned int root_kfpu: 1;
38 unsigned int root_used_math: 1;
45 static inline int xnarch_shadow_p(
struct xnarchtcb *tcb,
struct task_struct *task)
47 return tcb->spp == &task->thread.sp;
50 #define xnarch_fpu_ptr(tcb) ((tcb)->fpup)
52 #define xnarch_fault_regs(d) ((d)->regs)
53 #define xnarch_fault_trap(d) ((d)->exception)
54 #define xnarch_fault_code(d) ((d)->regs->orig_ax)
55 #define xnarch_fault_pc(d) ((d)->regs->ip)
56 #define xnarch_fault_fpu_p(d) ((d)->exception == 7)
57 #define xnarch_fault_pf_p(d) ((d)->exception == 14)
58 #define xnarch_fault_bp_p(d) ((current->ptrace & PT_PTRACED) && \
59 ((d)->exception == 1 || (d)->exception == 3))
60 #define xnarch_fault_notify(d) (!xnarch_fault_bp_p(d))
62 void xnarch_save_fpu(
struct xnthread *thread);
64 void xnarch_switch_fpu(
struct xnthread *from,
struct xnthread *to);
66 int xnarch_handle_fpu_fault(
struct xnthread *from,
67 struct xnthread *to,
struct ipipe_trap_data *d);
69 void xnarch_leave_root(
struct xnthread *root);
71 void xnarch_init_root_tcb(
struct xnthread *thread);
73 void xnarch_init_shadow_tcb(
struct xnthread *thread);
75 void xnarch_switch_to(
struct xnthread *out,
struct xnthread *in);
77 static inline void xnarch_enter_root(
struct xnthread *root) { }
79 static inline int xnarch_escalate(
void)
82 ipipe_raise_irq(cobalt_pipeline.escalate_virq);