target-arm/op_mem.h

   1 /* ARM memory operations.  */
   2
   3 void helper_ld(uint32_t);
   4 /* Load from address T1 into T0.  */
   5 #define MEM_LD_OP(name) \
   6 void OPPROTO glue(op_ld##name,MEMSUFFIX)(void) \
   7 { \
   8     T0 = glue(ld##name,MEMSUFFIX)(T1); \
   9     FORCE_RET(); \
  10 }
  11
  12 MEM_LD_OP(ub)
  13 MEM_LD_OP(sb)
  14 MEM_LD_OP(uw)
  15 MEM_LD_OP(sw)
  16 MEM_LD_OP(l)
  17
  18 #undef MEM_LD_OP
  19
  20 /* Store T0 to address T1.  */
  21 #define MEM_ST_OP(name) \
  22 void OPPROTO glue(op_st##name,MEMSUFFIX)(void) \
  23 { \
  24     glue(st##name,MEMSUFFIX)(T1, T0); \
  25     FORCE_RET(); \
  26 }
  27
  28 MEM_ST_OP(b)
  29 MEM_ST_OP(w)
  30 MEM_ST_OP(l)
  31
  32 #undef MEM_ST_OP
  33
  34 /* Swap T0 with memory at address T1.  */
  35 /* ??? Is this exception safe?  */
  36 #define MEM_SWP_OP(name, lname) \
  37 void OPPROTO glue(op_swp##name,MEMSUFFIX)(void) \
  38 { \
  39     uint32_t tmp; \
  40     cpu_lock(); \
  41     tmp = glue(ld##lname,MEMSUFFIX)(T1); \
  42     glue(st##name,MEMSUFFIX)(T1, T0); \
  43     T0 = tmp; \
  44     cpu_unlock(); \
  45     FORCE_RET(); \
  46 }
  47
  48 MEM_SWP_OP(b, ub)
  49 MEM_SWP_OP(l, l)
  50
  51 #undef MEM_SWP_OP
  52
  53 /* Load-locked, store exclusive.  */
  54 #define EXCLUSIVE_OP(suffix, ldsuffix) \
  55 void OPPROTO glue(op_ld##suffix##ex,MEMSUFFIX)(void) \
  56 { \
  57     cpu_lock(); \
  58     helper_mark_exclusive(env, T1); \
  59     T0 = glue(ld##ldsuffix,MEMSUFFIX)(T1); \
  60     cpu_unlock(); \
  61     FORCE_RET(); \
  62 } \
  63  \
  64 void OPPROTO glue(op_st##suffix##ex,MEMSUFFIX)(void) \
  65 { \
  66     int failed; \
  67     cpu_lock(); \
  68     failed = helper_test_exclusive(env, T1); \
  69     /* ??? Is it safe to hold the cpu lock over a store?  */ \
  70     if (!failed) { \
  71         glue(st##suffix,MEMSUFFIX)(T1, T0); \
  72     } \
  73     T0 = failed; \
  74     cpu_unlock(); \
  75     FORCE_RET(); \
  76 }
  77
  78 EXCLUSIVE_OP(b, ub)
  79 EXCLUSIVE_OP(w, uw)
  80 EXCLUSIVE_OP(l, l)
  81
  82 #undef EXCLUSIVE_OP
  83
  84 /* Load exclusive T0:T1 from address T1.  */
  85 void OPPROTO glue(op_ldqex,MEMSUFFIX)(void)
  86 {
  87     cpu_lock();
  88     helper_mark_exclusive(env, T1);
  89     T0 = glue(ldl,MEMSUFFIX)(T1);
  90     T1 = glue(ldl,MEMSUFFIX)((T1 + 4));
  91     cpu_unlock();
  92     FORCE_RET();
  93 }
  94
  95 /* Store exclusive T0:T2 to address T1.  */
  96 void OPPROTO glue(op_stqex,MEMSUFFIX)(void)
  97 {
  98     int failed;
  99     cpu_lock();
 100     failed = helper_test_exclusive(env, T1);
 101     /* ??? Is it safe to hold the cpu lock over a store?  */
 102     if (!failed) {
 103         glue(stl,MEMSUFFIX)(T1, T0);
 104         glue(stl,MEMSUFFIX)((T1 + 4), T2);
 105     }
 106     T0 = failed;
 107     cpu_unlock();
 108     FORCE_RET();
 109 }
 110
 111 /* Floating point load/store.  Address is in T1 */
 112 #define VFP_MEM_OP(p, w) \
 113 void OPPROTO glue(op_vfp_ld##p,MEMSUFFIX)(void) \
 114 { \
 115     FT0##p = glue(ldf##w,MEMSUFFIX)(T1); \
 116     FORCE_RET(); \
 117 } \
 118 void OPPROTO glue(op_vfp_st##p,MEMSUFFIX)(void) \
 119 { \
 120     glue(stf##w,MEMSUFFIX)(T1, FT0##p); \
 121     FORCE_RET(); \
 122 }
 123
 124 VFP_MEM_OP(s,l)
 125 VFP_MEM_OP(d,q)
 126
 127 #undef VFP_MEM_OP
 128
 129 /* iwMMXt load/store.  Address is in T1 */
 130 #define MMX_MEM_OP(name, ldname) \
 131 void OPPROTO glue(op_iwmmxt_ld##name,MEMSUFFIX)(void) \
 132 { \
 133     M0 = glue(ld##ldname,MEMSUFFIX)(T1); \
 134     FORCE_RET(); \
 135 } \
 136 void OPPROTO glue(op_iwmmxt_st##name,MEMSUFFIX)(void) \
 137 { \
 138     glue(st##name,MEMSUFFIX)(T1, M0); \
 139     FORCE_RET(); \
 140 }
 141
 142 MMX_MEM_OP(b, ub)
 143 MMX_MEM_OP(w, uw)
 144 MMX_MEM_OP(l, l)
 145 MMX_MEM_OP(q, q)
 146
 147 #undef MMX_MEM_OP
 148
 149 #undef MEMSUFFIX