1 #ifndef _ASM_POWERPC_ISERIES_EXCEPTION_H 2 #define _ASM_POWERPC_ISERIES_EXCEPTION_H 3 /* 4 * Extracted from head_64.S 5 * 6 * PowerPC version 7 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) 8 * 9 * Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP 10 * Copyright (C) 1996 Cort Dougan <cort@cs.nmt.edu> 11 * Adapted for Power Macintosh by Paul Mackerras. 12 * Low-level exception handlers and MMU support 13 * rewritten by Paul Mackerras. 14 * Copyright (C) 1996 Paul Mackerras. 15 * 16 * Adapted for 64bit PowerPC by Dave Engebretsen, Peter Bergner, and 17 * Mike Corrigan {engebret|bergner|mikejc}@us.ibm.com 18 * 19 * This file contains the low-level support and setup for the 20 * PowerPC-64 platform, including trap and interrupt dispatch. 21 * 22 * This program is free software; you can redistribute it and/or 23 * modify it under the terms of the GNU General Public License 24 * as published by the Free Software Foundation; either version 25 * 2 of the License, or (at your option) any later version. 26 */ 27 #include <asm/exception-64s.h> 28 29 #define EXCEPTION_PROLOG_ISERIES_1 \ 30 mfmsr r10; \ 31 ld r12,PACALPPACAPTR(r13); \ 32 ld r11,LPPACASRR0(r12); \ 33 ld r12,LPPACASRR1(r12); \ 34 ori r10,r10,MSR_RI; \ 35 mtmsrd r10,1 36 37 #define STD_EXCEPTION_ISERIES(label, area) \ 38 .globl label##_iSeries; \ 39 label##_iSeries: \ 40 HMT_MEDIUM; \ 41 mtspr SPRN_SPRG_SCRATCH0,r13; /* save r13 */ \ 42 EXCEPTION_PROLOG_1(area); \ 43 EXCEPTION_PROLOG_ISERIES_1; \ 44 b label##_common 45 46 #define MASKABLE_EXCEPTION_ISERIES(label) \ 47 .globl label##_iSeries; \ 48 label##_iSeries: \ 49 HMT_MEDIUM; \ 50 mtspr SPRN_SPRG_SCRATCH0,r13; /* save r13 */ \ 51 EXCEPTION_PROLOG_1(PACA_EXGEN); \ 52 lbz r10,PACASOFTIRQEN(r13); \ 53 cmpwi 0,r10,0; \ 54 beq- label##_iSeries_masked; \ 55 EXCEPTION_PROLOG_ISERIES_1; \ 56 b label##_common; \ 57 58 #endif /* _ASM_POWERPC_ISERIES_EXCEPTION_H */ 59