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Diff for /src/sys/arch/i386/i386/locore.S between version 1.44 and 1.46

version 1.44, 2006/10/25 13:56:15 version 1.46, 2007/02/17 22:31:37
Line 720  NENTRY(lgdt)
Line 720  NENTRY(lgdt)
         pushl   %eax          pushl   %eax
         lret          lret
   
   NENTRY(x86_flush)
           /* Reload code selector by doing intersegment return. */
           popl    %eax
           pushl   $GSEL(GCODE_SEL, SEL_KPL)
           pushl   %eax
           lret
   
 /*****************************************************************************/  /*****************************************************************************/
   
 /*  /*
Line 879  ENTRY(cpu_switch)
Line 886  ENTRY(cpu_switch)
         xorl    %esi,%esi          xorl    %esi,%esi
         sti          sti
 idle_unlock:  idle_unlock:
 #if defined(MULTIPROCESSOR) || defined(LOCKDEBUG)  
         call    _C_LABEL(sched_unlock_idle)          call    _C_LABEL(sched_unlock_idle)
 #endif  
         /* Interrupts are okay again. */          /* Interrupts are okay again. */
         pushl   $IPL_NONE               # spl0()          pushl   $IPL_NONE               # spl0()
         call    _C_LABEL(Xspllower)     # process pending interrupts          call    _C_LABEL(spllower)      # process pending interrupts
         addl    $4,%esp          addl    $4,%esp
         jmp     idle_start          jmp     idle_start
 idle_zero:  idle_zero:
Line 908  idle_start:
Line 913  idle_start:
 idle_exit:  idle_exit:
         movl    $IPL_HIGH,CPUVAR(ILEVEL)                # splhigh          movl    $IPL_HIGH,CPUVAR(ILEVEL)                # splhigh
         sti          sti
 #if defined(MULTIPROCESSOR) || defined(LOCKDEBUG)  
         call    _C_LABEL(sched_lock_idle)          call    _C_LABEL(sched_lock_idle)
 #endif  
         movl    _C_LABEL(sched_whichqs),%ecx          movl    _C_LABEL(sched_whichqs),%ecx
         bsfl    %ecx,%ebx          bsfl    %ecx,%ebx
         jz      idle_unlock          jz      idle_unlock
Line 1005  switch_exited:
Line 1008  switch_exited:
   
 #if 0  #if 0
         /* Don't bother with the rest if switching to a system process. */          /* Don't bother with the rest if switching to a system process. */
         testl   $P_SYSTEM,L_FLAG(%edi); XXX NJWLWP lwp's don't have P_SYSTEM!          testl   $PK_SYSTEM,L_FLAG(%edi);        XXX NJWLWP lwp's don't have PK_SYSTEM!
         jnz     switch_restored          jnz     switch_restored
 #endif  #endif
   
Line 1062  switch_restored:
Line 1065  switch_restored:
         movl    $1,%ebx          movl    $1,%ebx
   
 switch_return:  switch_return:
 #if defined(MULTIPROCESSOR) || defined(LOCKDEBUG)  
         call    _C_LABEL(sched_unlock_idle)          call    _C_LABEL(sched_unlock_idle)
 #endif  
         cmpl    $0,CPUVAR(IPENDING)          cmpl    $0,CPUVAR(IPENDING)
         jz      3f          jz      3f
         pushl   $IPL_NONE               # spl0()          pushl   $IPL_NONE               # spl0()
         call    _C_LABEL(Xspllower)     # process pending interrupts          call    _C_LABEL(spllower)      # process pending interrupts
         addl    $4,%esp          addl    $4,%esp
 3:  3:
         movl    $IPL_HIGH,CPUVAR(ILEVEL)        # splhigh()          movl    $IPL_HIGH,CPUVAR(ILEVEL)        # splhigh()
Line 1155  ENTRY(cpu_exit)
Line 1156  ENTRY(cpu_exit)
         movl    CPUVAR(IDLE_PCB),%esi          movl    CPUVAR(IDLE_PCB),%esi
         movl    CPUVAR(IDLE_TSS_SEL),%edx          movl    CPUVAR(IDLE_TSS_SEL),%edx
 #endif  #endif
         /* In case we fault... */  
         movl    $0,CPUVAR(CURLWP)  
   
         /* Restore the idle context. */          /* Restore the idle context. */
         cli          cli
Line 1187  ENTRY(cpu_exit)
Line 1186  ENTRY(cpu_exit)
         /* Record new pcb. */          /* Record new pcb. */
         SET_CURPCB(%esi)          SET_CURPCB(%esi)
   
           /* Now off the CPU. */
           movl    $0,CPUVAR(CURLWP)
   
         /* Interrupts are okay again. */          /* Interrupts are okay again. */
         sti          sti
   
         /*  
          * Schedule the dead LWP's stack to be freed.  
          */  
         pushl   %edi  
         call    _C_LABEL(lwp_exit2)  
         addl    $4,%esp  
   
         /* Jump into cpu_switch() with the right state. */          /* Jump into cpu_switch() with the right state. */
         xorl    %esi,%esi          xorl    %esi,%esi
         movl    %esi,CPUVAR(CURLWP)  
         jmp     idle_start          jmp     idle_start
   
 /*  /*

Legend:
Removed from v.1.44  
changed lines
  Added in v.1.46

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