[Kgdb-bugreport] bug in ppc BOOKE

[Amy F. <amy...@wi...>]

Hi,

The following is a patch to be applied to a file created by
ppc-lite.patch. It fixes a problem discovered on an ppc/e500/booke
system - sending a step instruction resulted in no changes observed on
the target while gdb was stuck waiting.

Amy Fong
-------------------------------------------
diff -uNr linux-2.6.10.old/arch/ppc/kernel/kgdb.c linux-2.6.10/arch/ppc/kernel/kgdb.c
--- linux-2.6.10.old/arch/ppc/kernel/kgdb.c	2005-05-12 17:45:01.000000000 -0400
+++ linux-2.6.10/arch/ppc/kernel/kgdb.c	2005-05-12 17:45:32.000000000 -0400
@@ -228,7 +228,7 @@
 			/* set the trace bit if we're stepping */
 			if (remcom_in_buffer[0] == 's') {
 #if defined (CONFIG_40x) || defined(CONFIG_BOOKE)
-				mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC);
+				mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
 				linux_regs->msr |= MSR_DE;
 #else
 				linux_regs->msr |= MSR_SE;