kernel/arch/i386/debugreg.S

   1 #include <machine/asm.h>
   2
   3 #define LD_ST_REG(reg)                                                  ;\
   4 ENTRY(ld_##reg)                                                 ;\
   5         mov     4(%esp), %eax                                           ;\
   6         mov     %eax,   %reg                                            ;\
   7         ret                                                             ;\
   8                                                                         ;\
   9 ENTRY(st_##reg)                                                 ;\
  10         mov     %reg,   %eax                                            ;\
  11         ret
  12
  13 /*
  14  * void ld_dr0(phys_bytes value)
  15  * phys_bytes st_dr0(void)
  16  */
  17 LD_ST_REG(dr0)
  18 LD_ST_REG(dr1)
  19 LD_ST_REG(dr2)
  20 LD_ST_REG(dr3)
  21
  22 /*
  23  * void ld_dr0(unsigned long value)
  24  * unsigned long st_dr0(void)
  25  */
  26 LD_ST_REG(dr6)
  27 LD_ST_REG(dr7)