config/rs6000/darwin-fallback.c

96       uint32_t ins = *pc++;
98       if ((ins & 0xFC000003) == 0x48000000)  /* b instruction */
100 	  pc += ((((int32_t) ins & 0x3FFFFFC) ^ 0x2000000) - 0x2000004) / 4;
103       if ((ins & 0xFC600000) == 0x2C000000)  /* cmpwi */
105 	  int32_t val1 = (int16_t) ins;
106 	  int32_t val2 = gprs[ins >> 16 & 0x1F];
109 	  uint32_t mask = 0xF << ((ins >> 21 & 0x1C) ^ 0x1C);
116       if ((ins & 0xFEC38003) == 0x40820000)  /* forwards beq/bne */
118 	  if ((cr >> ((ins >> 16 & 0x1F) ^ 0x1F) & 1) == (ins >> 24 & 1))
119 	    pc += (ins & 0x7FFC) / 4 - 1;
122       if ((ins & 0xFC0007FF) == 0x7C000378) /* or, including mr */
124 	  gprs [ins >> 16 & 0x1F] = (gprs [ins >> 11 & 0x1F]
125 				     | gprs [ins >> 21 & 0x1F]);
128       if (ins >> 26 == 0x0E)  /* addi, including li */
130 	  reg_unit src = (ins >> 16 & 0x1F) == 0 ? 0 : gprs [ins >> 16 & 0x1F];
131 	  gprs [ins >> 21 & 0x1F] = src + (int16_t) ins;
134       if (ins >> 26 == 0x0F)  /* addis, including lis */
136 	  reg_unit src = (ins >> 16 & 0x1F) == 0 ? 0 : gprs [ins >> 16 & 0x1F];
137 	  gprs [ins >> 21 & 0x1F] = src + ((int16_t) ins << 16);
140       if (ins >> 26 == 0x20)  /* lwz */
142 	  reg_unit src = (ins >> 16 & 0x1F) == 0 ? 0 : gprs [ins >> 16 & 0x1F];
143 	  uint32_t *p = (uint32_t *)(src + (int16_t) ins);
146 	  gprs [ins >> 21 & 0x1F] = *p;
149       if (ins >> 26 == 0x21)  /* lwzu */
151 	  uint32_t *p = (uint32_t *)(gprs [ins >> 16 & 0x1F] += (int16_t) ins);
154 	  gprs [ins >> 21 & 0x1F] = *p;
157       if (ins >> 26 == 0x24)  /* stw */
162 	  reg_unit src = (ins >> 16 & 0x1F) == 0 ? 0 : gprs [ins >> 16 & 0x1F];
163 	  uint32_t *p = (uint32_t *)(src + (int16_t) ins);
169       if (ins >> 26 == 0x2E) /* lmw */
171 	  reg_unit src = (ins >> 16 & 0x1F) == 0 ? 0 : gprs [ins >> 16 & 0x1F];
172 	  uint32_t *p = (uint32_t *)(src + (int16_t) ins);
175 	  for (i = (ins >> 21 & 0x1F); i < 32; i++)
183       if ((ins & 0xFC1FFFFF) == 0x7c0803a6)  /* mtlr */
185 	  lr = gprs [ins >> 21 & 0x1F];
188       if ((ins & 0xFC1FFFFF) == 0x7c0802a6)  /* mflr */
190 	  gprs [ins >> 21 & 0x1F] = lr;
193       if ((ins & 0xFC1FFFFF) == 0x7c0903a6)  /* mtctr */
195 	  ctr = gprs [ins >> 21 & 0x1F];
201       if ((ins & 0xFC000FFF) == 0x7c000120) /* mtcrf */
206 	    mask |= ((-(ins >> (12 + i) & 1)) & 0xF) << 4 * i;
207 	  cr = (cr & ~mask) | (gprs [ins >> 21 & 0x1F] & mask);
210       if (ins == 0x429f0005)  /* bcl- 20,4*cr7+so,.+4, loads pc into LR */
215       if (ins == 0x4e800420) /* bctr */
220       if (ins == 0x44000002) /* sc */