[POWERPC] Split out iSeries specific exception macros

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/iseries/exception.h b/arch/powerpc/platforms/iseries/exception.h
new file mode 100644
index 000000000000..5b3f285e8168
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/exception.h
@@ -0,0 +1,58 @@
+#ifndef _ASM_POWERPC_ISERIES_EXCEPTION_H
+#define _ASM_POWERPC_ISERIES_EXCEPTION_H
+/*
+ * Extracted from head_64.S
+ *
+ *  PowerPC version
+ *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ *  Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP
+ *    Copyright (C) 1996 Cort Dougan <cort@cs.nmt.edu>
+ *  Adapted for Power Macintosh by Paul Mackerras.
+ *  Low-level exception handlers and MMU support
+ *  rewritten by Paul Mackerras.
+ *    Copyright (C) 1996 Paul Mackerras.
+ *
+ *  Adapted for 64bit PowerPC by Dave Engebretsen, Peter Bergner, and
+ *    Mike Corrigan {engebret|bergner|mikejc}@us.ibm.com
+ *
+ *  This file contains the low-level support and setup for the
+ *  PowerPC-64 platform, including trap and interrupt dispatch.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ */
+#include <asm/exception.h>
+
+#define EXCEPTION_PROLOG_ISERIES_1                                      \
+        mfmsr   r10;                                                    \
+        ld      r12,PACALPPACAPTR(r13);                                 \
+        ld      r11,LPPACASRR0(r12);                                    \
+        ld      r12,LPPACASRR1(r12);                                    \
+        ori     r10,r10,MSR_RI;                                         \
+        mtmsrd  r10,1
+
+#define STD_EXCEPTION_ISERIES(n, label, area)                           \
+        .globl label##_iSeries;                                         \
+label##_iSeries:                                                        \
+        HMT_MEDIUM;                                                     \
+        mtspr   SPRN_SPRG1,r13;         /* save r13 */                  \
+        EXCEPTION_PROLOG_1(area);                                       \
+        EXCEPTION_PROLOG_ISERIES_1;                                     \
+        b       label##_common
+
+#define MASKABLE_EXCEPTION_ISERIES(n, label)                            \
+        .globl label##_iSeries;                                         \
+label##_iSeries:                                                        \
+        HMT_MEDIUM;                                                     \
+        mtspr   SPRN_SPRG1,r13;         /* save r13 */                  \
+        EXCEPTION_PROLOG_1(PACA_EXGEN);                                 \
+        lbz     r10,PACASOFTIRQEN(r13);                                 \
+        cmpwi   0,r10,0;                                                \
+        beq-    label##_iSeries_masked;                                 \
+        EXCEPTION_PROLOG_ISERIES_1;                                     \
+        b       label##_common;                                         \
+
+#endif  /* _ASM_POWERPC_ISERIES_EXCEPTION_H */