svn commit: r347177 - stable/12/sys/powerpc/powerpc

[Justin Hibbits]

Author: jhibbits
Date: Mon May  6 03:39:25 2019
New Revision: 347177
URL: https://svnweb.freebsd.org/changeset/base/347177

Log:
  MFC r344871:
  
  powerpc: Save stack pointer in savectx
  
  This allows 'show acttrace' to show backtrace on processes currently running
  on CPUs.
  
  Reported by:	Brandon Bergren

Modified:
  stable/12/sys/powerpc/powerpc/swtch32.S
  stable/12/sys/powerpc/powerpc/swtch64.S
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/powerpc/powerpc/swtch32.S
==============================================================================
--- stable/12/sys/powerpc/powerpc/swtch32.S	Mon May  6 03:35:44 2019	(r347176)
+++ stable/12/sys/powerpc/powerpc/swtch32.S	Mon May  6 03:39:25 2019	(r347177)
@@ -195,6 +195,7 @@ ENTRY(savectx)
 	stmw	%r12,PCB_CONTEXT(%r3)	/* Save the non-volatile GP regs */
 	mfcr	%r4			/* Save the condition register */
 	stw	%r4,PCB_CR(%r3)
+	stw	%r1,PCB_SP(%r3)		/* Save the stack pointer */
 	mflr	%r4			/* Save the link register */
 	stw	%r4,PCB_LR(%r3)
 	blr

Modified: stable/12/sys/powerpc/powerpc/swtch64.S
==============================================================================
--- stable/12/sys/powerpc/powerpc/swtch64.S	Mon May  6 03:35:44 2019	(r347176)
+++ stable/12/sys/powerpc/powerpc/swtch64.S	Mon May  6 03:39:25 2019	(r347177)
@@ -276,6 +276,7 @@ ENTRY(savectx)
 
 	mfcr	%r4			/* Save the condition register */
 	std	%r4,PCB_CR(%r3)
+	std	%r1,PCB_SP(%r3)		/* Save the stack pointer */
 	std	%r2,PCB_TOC(%r3)	/* Save the TOC pointer */
 	mflr	%r4			/* Save the link register */
 	std	%r4,PCB_LR(%r3)