/* * Miscellaneous PowerPC emulation helpers for QEMU. * * Copyright (c) 2003-2007 Jocelyn Mayer * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ #include "cpu.h" #include "helper.h" #include "helper_regs.h" /*****************************************************************************/ /* SPR accesses */ void helper_load_dump_spr(CPUPPCState *env, uint32_t sprn) { qemu_log("Read SPR %d %03x => " TARGET_FMT_lx "\n", sprn, sprn, env->spr[sprn]); } void helper_store_dump_spr(CPUPPCState *env, uint32_t sprn) { qemu_log("Write SPR %d %03x <= " TARGET_FMT_lx "\n", sprn, sprn, env->spr[sprn]); } #if !defined(CONFIG_USER_ONLY) void helper_store_sdr1(CPUPPCState *env, target_ulong val) { ppc_store_sdr1(env, val); } void helper_store_hid0_601(CPUPPCState *env, target_ulong val) { target_ulong hid0; hid0 = env->spr[SPR_HID0]; if ((val ^ hid0) & 0x00000008) { /* Change current endianness */ env->hflags &= ~(1 << MSR_LE); env->hflags_nmsr &= ~(1 << MSR_LE); env->hflags_nmsr |= (1 << MSR_LE) & (((val >> 3) & 1) << MSR_LE); env->hflags |= env->hflags_nmsr; qemu_log("%s: set endianness to %c => " TARGET_FMT_lx "\n", __func__, val & 0x8 ? 'l' : 'b', env->hflags); } env->spr[SPR_HID0] = (uint32_t)val; } void helper_store_403_pbr(CPUPPCState *env, uint32_t num, target_ulong value) { if (likely(env->pb[num] != value)) { env->pb[num] = value; /* Should be optimized */ tlb_flush(env, 1); } } void helper_store_40x_dbcr0(CPUPPCState *env, target_ulong val) { store_40x_dbcr0(env, val); } void helper_store_40x_sler(CPUPPCState *env, target_ulong val) { store_40x_sler(env, val); } #endif /*****************************************************************************/ /* PowerPC 601 specific instructions (POWER bridge) */ target_ulong helper_clcs(CPUPPCState *env, uint32_t arg) { switch (arg) { case 0x0CUL: /* Instruction cache line size */ return env->icache_line_size; break; case 0x0DUL: /* Data cache line size */ return env->dcache_line_size; break; case 0x0EUL: /* Minimum cache line size */ return (env->icache_line_size < env->dcache_line_size) ? env->icache_line_size : env->dcache_line_size; break; case 0x0FUL: /* Maximum cache line size */ return (env->icache_line_size > env->dcache_line_size) ? env->icache_line_size : env->dcache_line_size; break; default: /* Undefined */ return 0; break; } } /*****************************************************************************/ /* Special registers manipulation */ /* GDBstub can read and write MSR... */ void ppc_store_msr(CPUPPCState *env, target_ulong value) { hreg_store_msr(env, value, 0); }