patch-2.3.30 linux/arch/ppc/kernel/mk_defs.c

• Lines: 24
• Date: Sat Nov 27 15:41:59 1999
• Orig file: v2.3.29/linux/arch/ppc/kernel/mk_defs.c
• Orig date: Sun Nov 7 16:37:34 1999

diff -u --recursive --new-file v2.3.29/linux/arch/ppc/kernel/mk_defs.c linux/arch/ppc/kernel/mk_defs.c
@@ -88,7 +88,9 @@
 	DEFINE(GPR29, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[29]));
 	DEFINE(GPR30, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[30]));
 	DEFINE(GPR31, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[31]));
-	/* Note: these symbols include _ because they overlap with special register names */
+	/* Note: these symbols include _ because they overlap with special
+	 * register names
+	 */
 	DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
 	DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
 	DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
@@ -97,6 +99,12 @@
 	DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
 	DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 	DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
+	/* The PowerPC 400-class processors have neither the DAR nor the DSISR
+	 * SPRs. Hence, we overload them to hold the similar DEAR and ESR SPRs
+	 * for such processors.
+	 */
+	DEFINE(_DEAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
+	DEFINE(_ESR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 	DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
 	DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
 	DEFINE(TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));