xnu-201.tar.gz

[apple/xnu.git] / osfmk / ppc / Firmware.s

diff --git a/osfmk/ppc/Firmware.s b/osfmk/ppc/Firmware.s
index c7db5a174b21b98db5a1fe5c2336e5f868e6a92f..fc040ffe2d048db3330689b30088a40039edcf3c 100644 (file)
--- a/osfmk/ppc/Firmware.s
+++ b/osfmk/ppc/Firmware.s
@@ -323,6 +323,17 @@ ENTRY(CreateShutdownCTX, TAG_NO_FRAME_USED)
                        sc                                                                              /* Do it to it */
                        blr                                                                             /* Bye bye, Birdie... */
 
+/*
+ *                     This is the glue to choke system
+ */
+ 
+ENTRY(ChokeSys, TAG_NO_FRAME_USED)
+                       
+                       lis             r0,HIGH_ADDR(Choke)                             /* Top half of Choke firmware call number */
+                       ori             r0,r0,LOW_ADDR(Choke)                   /* Bottom half */
+                       sc                                                                              /* Do it to it */
+                       blr                                                                             /* Bye bye, Birdie... */
+
 /* 
  *                     Used to initialize the SCC for debugging output
  */
@@ -1604,14 +1615,18 @@ ENTRY(CreateFakeDECLL, TAG_NO_FRAME_USED)
                        blr                                                                             /* Return to interrupt handler */
 
 /*
- *                     Choke the system.  This is just a dummy for now,
- *                     but we'll eventually do something.
+ *                     Choke the system.  
  */
 
 ENTRY(DoChokeLL, TAG_NO_FRAME_USED)
 
-                       BREAKPOINT_TRAP                                                 /* Dummy for now */
-
+                       mfsprg  r11,0                                                   ; Get the per_proc address 
+                       lwz             r11,PP_TEMPWORK1(r11)                   ; Restore the return address 
+                       li              r3,T_CHOKE                                              ; Set external interrupt value
+                       mtlr    r11                                                             ; Restore the LR 
+                       stw             r3,saveexception(r13)                   ; Modify the exception type to external
+                       blr                                                                             ; Return to interrupt handler 
+                       
 /*
  *                     Set the low level trace flags 
  */
@@ -2107,6 +2122,7 @@ LEXT(stFloat)
                        .globl  EXT(stVectors)
 
 LEXT(stVectors)
+#if 0
 
                        mfpvr   r6                                      ; Get machine type
                        mr              r5,r3                           ; Save area address
@@ -2191,6 +2207,8 @@ LEXT(stVectors)
                        lvxl    v31,0,r5
                        mtmsr   r0
                        isync
+
+#endif
                        blr
 
 
@@ -2202,6 +2220,7 @@ LEXT(stVectors)
                        .globl  EXT(stSpecrs)
 
 LEXT(stSpecrs)
+#if 0
 
                        mfmsr   r0                                      ; Save the MSR
                        rlwinm  r4,r0,0,MSR_EE_BIT,MSR_EE_BIT   ; Turn off interruptions
@@ -2332,4 +2351,6 @@ nnmax:            stw             r4,(48*4)(r3)
                        
                        mtmsr   r0
                        isync
+
+#endif
                        blr