target-ppc/exec.h

   1 /*
   2  *  PowerPC emulation definitions for qemu.
   3  *
   4  *  Copyright (c) 2003-2007 Jocelyn Mayer
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #if !defined (__PPC_H__)
  21 #define __PPC_H__
  22
  23 #include "config.h"
  24
  25 #include "dyngen-exec.h"
  26
  27 #include "cpu.h"
  28 #include "exec-all.h"
  29
  30 /* For normal operations, precise emulation should not be needed */
  31 //#define USE_PRECISE_EMULATION 1
  32 #define USE_PRECISE_EMULATION 0
  33
  34 register struct CPUPPCState *env asm(AREG0);
  35 #if TARGET_LONG_BITS > HOST_LONG_BITS
  36 /* no registers can be used */
  37 #define T0 (env->t0)
  38 #define T1 (env->t1)
  39 #define T2 (env->t2)
  40 #define TDX "%016" PRIx64
  41 #else
  42 register target_ulong T0 asm(AREG1);
  43 register target_ulong T1 asm(AREG2);
  44 register target_ulong T2 asm(AREG3);
  45 #define TDX "%016lx"
  46 #endif
  47 /* We may, sometime, need 64 bits registers on 32 bits targets */
  48 #if !defined(TARGET_PPC64)
  49 #define T0_64 (env->t0_64)
  50 #define T1_64 (env->t1_64)
  51 #define T2_64 (env->t2_64)
  52 #else
  53 #define T0_64 T0
  54 #define T1_64 T1
  55 #define T2_64 T2
  56 #endif
  57 /* Provision for Altivec */
  58 #define AVR0 (env->avr0)
  59 #define AVR1 (env->avr1)
  60 #define AVR2 (env->avr2)
  61
  62 #define FT0 (env->ft0)
  63 #define FT1 (env->ft1)
  64 #define FT2 (env->ft2)
  65
  66 #if defined (DEBUG_OP)
  67 # define RETURN() __asm__ __volatile__("nop" : : : "memory");
  68 #else
  69 # define RETURN() __asm__ __volatile__("" : : : "memory");
  70 #endif
  71
  72 static always_inline target_ulong rotl8 (target_ulong i, int n)
  73 {
  74     return (((uint8_t)i << n) | ((uint8_t)i >> (8 - n)));
  75 }
  76
  77 static always_inline target_ulong rotl16 (target_ulong i, int n)
  78 {
  79     return (((uint16_t)i << n) | ((uint16_t)i >> (16 - n)));
  80 }
  81
  82 static always_inline target_ulong rotl32 (target_ulong i, int n)
  83 {
  84     return (((uint32_t)i << n) | ((uint32_t)i >> (32 - n)));
  85 }
  86
  87 #if defined(TARGET_PPC64)
  88 static always_inline target_ulong rotl64 (target_ulong i, int n)
  89 {
  90     return (((uint64_t)i << n) | ((uint64_t)i >> (64 - n)));
  91 }
  92 #endif
  93
  94 #if !defined(CONFIG_USER_ONLY)
  95 #include "softmmu_exec.h"
  96 #endif /* !defined(CONFIG_USER_ONLY) */
  97
  98 void do_raise_exception_err (uint32_t exception, int error_code);
  99 void do_raise_exception (uint32_t exception);
 100
 101 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong vaddr,
 102                           int rw, int access_type);
 103
 104 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
 105                        target_ulong pte0, target_ulong pte1);
 106
 107 static always_inline void env_to_regs (void)
 108 {
 109 }
 110
 111 static always_inline void regs_to_env (void)
 112 {
 113 }
 114
 115 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
 116                               int mmu_idx, int is_softmmu);
 117
 118 static always_inline int cpu_halted (CPUState *env)
 119 {
 120     if (!env->halted)
 121         return 0;
 122     if (msr_ee && (env->interrupt_request & CPU_INTERRUPT_HARD)) {
 123         env->halted = 0;
 124         return 0;
 125     }
 126     return EXCP_HALTED;
 127 }
 128
 129 #endif /* !defined (__PPC_H__) */