1 /* 2 * PowerPC internal definitions for qemu. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef PPC_INTERNAL_H 19 #define PPC_INTERNAL_H 20 21 #include "exec/breakpoint.h" 22 #include "hw/registerfields.h" 23 #include "exec/page-protection.h" 24 25 /* PM instructions */ 26 typedef enum { 27 PPC_PM_DOZE, 28 PPC_PM_NAP, 29 PPC_PM_SLEEP, 30 PPC_PM_RVWINKLE, 31 PPC_PM_STOP, 32 } powerpc_pm_insn_t; 33 34 #define FUNC_MASK(name, ret_type, size, max_val) \ 35 static inline ret_type name(uint##size##_t start, \ 36 uint##size##_t end) \ 37 { \ 38 ret_type ret, max_bit = size - 1; \ 39 \ 40 if (likely(start == 0)) { \ 41 ret = max_val << (max_bit - end); \ 42 } else if (likely(end == max_bit)) { \ 43 ret = max_val >> start; \ 44 } else { \ 45 ret = (((uint##size##_t)(-1ULL)) >> (start)) ^ \ 46 (((uint##size##_t)(-1ULL) >> (end)) >> 1); \ 47 if (unlikely(start > end)) { \ 48 return ~ret; \ 49 } \ 50 } \ 51 \ 52 return ret; \ 53 } 54 55 #if defined(TARGET_PPC64) 56 FUNC_MASK(MASK, target_ulong, 64, UINT64_MAX); 57 #else 58 FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX); 59 #endif 60 FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX); 61 FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX); 62 63 /*****************************************************************************/ 64 /*** Instruction decoding ***/ 65 #define EXTRACT_HELPER(name, shift, nb) \ 66 static inline uint32_t name(uint32_t opcode) \ 67 { \ 68 return extract32(opcode, shift, nb); \ 69 } 70 71 #define EXTRACT_SHELPER(name, shift, nb) \ 72 static inline int32_t name(uint32_t opcode) \ 73 { \ 74 return sextract32(opcode, shift, nb); \ 75 } 76 77 #define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \ 78 static inline uint32_t name(uint32_t opcode) \ 79 { \ 80 return extract32(opcode, shift1, nb1) << nb2 | \ 81 extract32(opcode, shift2, nb2); \ 82 } 83 84 #define EXTRACT_HELPER_SPLIT_3(name, \ 85 d0_bits, shift_op_d0, shift_d0, \ 86 d1_bits, shift_op_d1, shift_d1, \ 87 d2_bits, shift_op_d2, shift_d2) \ 88 static inline int16_t name(uint32_t opcode) \ 89 { \ 90 return \ 91 (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \ 92 (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \ 93 (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \ 94 } 95 96 97 /* Opcode part 1 */ 98 EXTRACT_HELPER(opc1, 26, 6); 99 /* Opcode part 2 */ 100 EXTRACT_HELPER(opc2, 1, 5); 101 /* Opcode part 3 */ 102 EXTRACT_HELPER(opc3, 6, 5); 103 /* Opcode part 4 */ 104 EXTRACT_HELPER(opc4, 16, 5); 105 /* Update Cr0 flags */ 106 EXTRACT_HELPER(Rc, 0, 1); 107 /* Update Cr6 flags (Altivec) */ 108 EXTRACT_HELPER(Rc21, 10, 1); 109 /* Destination */ 110 EXTRACT_HELPER(rD, 21, 5); 111 /* Source */ 112 EXTRACT_HELPER(rS, 21, 5); 113 /* First operand */ 114 EXTRACT_HELPER(rA, 16, 5); 115 /* Second operand */ 116 EXTRACT_HELPER(rB, 11, 5); 117 /* Third operand */ 118 EXTRACT_HELPER(rC, 6, 5); 119 /*** Get CRn ***/ 120 EXTRACT_HELPER(crfD, 23, 3); 121 EXTRACT_HELPER(BF, 23, 3); 122 EXTRACT_HELPER(crfS, 18, 3); 123 EXTRACT_HELPER(crbD, 21, 5); 124 EXTRACT_HELPER(crbA, 16, 5); 125 EXTRACT_HELPER(crbB, 11, 5); 126 /* SPR / TBL */ 127 EXTRACT_HELPER(_SPR, 11, 10); SPR(uint32_t opcode)128 static inline uint32_t SPR(uint32_t opcode) 129 { 130 uint32_t sprn = _SPR(opcode); 131 132 return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5); 133 } 134 /*** Get constants ***/ 135 /* 16 bits signed immediate value */ 136 EXTRACT_SHELPER(SIMM, 0, 16); 137 /* 16 bits unsigned immediate value */ 138 EXTRACT_HELPER(UIMM, 0, 16); 139 /* 5 bits signed immediate value */ 140 EXTRACT_SHELPER(SIMM5, 16, 5); 141 /* 5 bits signed immediate value */ 142 EXTRACT_HELPER(UIMM5, 16, 5); 143 /* 4 bits unsigned immediate value */ 144 EXTRACT_HELPER(UIMM4, 16, 4); 145 /* Bit count */ 146 EXTRACT_HELPER(NB, 11, 5); 147 /* Shift count */ 148 EXTRACT_HELPER(SH, 11, 5); 149 /* lwat/stwat/ldat/lwat */ 150 EXTRACT_HELPER(FC, 11, 5); 151 /* Vector shift count */ 152 EXTRACT_HELPER(VSH, 6, 4); 153 /* Mask start */ 154 EXTRACT_HELPER(MB, 6, 5); 155 /* Mask end */ 156 EXTRACT_HELPER(ME, 1, 5); 157 /* Trap operand */ 158 EXTRACT_HELPER(TO, 21, 5); 159 160 EXTRACT_HELPER(CRM, 12, 8); 161 162 #ifndef CONFIG_USER_ONLY 163 EXTRACT_HELPER(SR, 16, 4); 164 #endif 165 166 /* mtfsf/mtfsfi */ 167 EXTRACT_HELPER(FPBF, 23, 3); 168 EXTRACT_HELPER(FPIMM, 12, 4); 169 EXTRACT_HELPER(FPL, 25, 1); 170 EXTRACT_HELPER(FPFLM, 17, 8); 171 EXTRACT_HELPER(FPW, 16, 1); 172 173 /* addpcis */ 174 EXTRACT_HELPER_SPLIT_3(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0) 175 #if defined(TARGET_PPC64) 176 /* darn */ 177 EXTRACT_HELPER(L, 16, 2); 178 #endif 179 /* wait */ 180 EXTRACT_HELPER(WC, 21, 2); 181 EXTRACT_HELPER(PL, 16, 2); 182 183 /*** Jump target decoding ***/ 184 /* Immediate address */ LI(uint32_t opcode)185 static inline target_ulong LI(uint32_t opcode) 186 { 187 return (opcode >> 0) & 0x03FFFFFC; 188 } 189 BD(uint32_t opcode)190 static inline uint32_t BD(uint32_t opcode) 191 { 192 return (opcode >> 0) & 0xFFFC; 193 } 194 195 EXTRACT_HELPER(BO, 21, 5); 196 EXTRACT_HELPER(BI, 16, 5); 197 /* Absolute/relative address */ 198 EXTRACT_HELPER(AA, 1, 1); 199 /* Link */ 200 EXTRACT_HELPER(LK, 0, 1); 201 202 /* DFP Z22-form */ 203 EXTRACT_HELPER(DCM, 10, 6) 204 205 /* DFP Z23-form */ 206 EXTRACT_HELPER(RMC, 9, 2) 207 EXTRACT_HELPER(Rrm, 16, 1) 208 209 EXTRACT_HELPER_SPLIT(DQxT, 3, 1, 21, 5); 210 EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5); 211 EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5); 212 EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5); 213 EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5); 214 EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5); 215 EXTRACT_HELPER(DM, 8, 2); 216 EXTRACT_HELPER(UIM, 16, 2); 217 EXTRACT_HELPER(SHW, 8, 2); 218 EXTRACT_HELPER(SP, 19, 2); 219 EXTRACT_HELPER(IMM8, 11, 8); 220 EXTRACT_HELPER(DCMX, 16, 7); 221 EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6); 222 223 void helper_compute_fprf_float16(CPUPPCState *env, float16 arg); 224 void helper_compute_fprf_float32(CPUPPCState *env, float32 arg); 225 void helper_compute_fprf_float128(CPUPPCState *env, float128 arg); 226 227 /* translate.c */ 228 229 int ppc_fixup_cpu(PowerPCCPU *cpu); 230 void create_ppc_opcodes(PowerPCCPU *cpu, Error **errp); 231 void destroy_ppc_opcodes(PowerPCCPU *cpu); 232 233 /* gdbstub.c */ 234 void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc); 235 const gchar *ppc_gdb_arch_name(CPUState *cs); 236 237 #ifndef CONFIG_USER_ONLY 238 239 /* Check if permission bit required for the access_type is set in prot */ check_prot_access_type(int prot,MMUAccessType access_type)240 static inline int check_prot_access_type(int prot, MMUAccessType access_type) 241 { 242 return prot & (1 << access_type); 243 } 244 245 /* PowerPC MMU emulation */ 246 247 bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type, 248 hwaddr *raddrp, int *psizep, int *protp, 249 int mmu_idx, bool guest_visible); 250 251 /* Software driven TLB helpers */ 252 int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, 253 int way, int is_code); 254 255 #endif /* !CONFIG_USER_ONLY */ 256 257 /* Common routines used by software and hardware TLBs emulation */ pte_is_valid(target_ulong pte0)258 static inline int pte_is_valid(target_ulong pte0) 259 { 260 return pte0 & 0x80000000 ? 1 : 0; 261 } 262 pte_invalidate(target_ulong * pte0)263 static inline void pte_invalidate(target_ulong *pte0) 264 { 265 *pte0 &= ~0x80000000; 266 } 267 268 #define PTE_PTEM_MASK 0x7FFFFFBF 269 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) 270 271 #ifdef CONFIG_USER_ONLY 272 void ppc_cpu_record_sigsegv(CPUState *cs, vaddr addr, 273 MMUAccessType access_type, 274 bool maperr, uintptr_t ra); 275 #else 276 bool ppc_cpu_tlb_fill(CPUState *cs, vaddr address, int size, 277 MMUAccessType access_type, int mmu_idx, 278 bool probe, uintptr_t retaddr); 279 G_NORETURN void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr, 280 MMUAccessType access_type, int mmu_idx, 281 uintptr_t retaddr); 282 void ppc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, 283 vaddr addr, unsigned size, 284 MMUAccessType access_type, 285 int mmu_idx, MemTxAttrs attrs, 286 MemTxResult response, uintptr_t retaddr); 287 void ppc_cpu_debug_excp_handler(CPUState *cs); 288 bool ppc_cpu_debug_check_breakpoint(CPUState *cs); 289 bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp); 290 #endif 291 292 FIELD(GER_MSK, XMSK, 0, 4) 293 FIELD(GER_MSK, YMSK, 4, 4) 294 FIELD(GER_MSK, PMSK, 8, 8) 295 ger_pack_masks(int pmsk,int ymsk,int xmsk)296 static inline int ger_pack_masks(int pmsk, int ymsk, int xmsk) 297 { 298 int msk = 0; 299 msk = FIELD_DP32(msk, GER_MSK, XMSK, xmsk); 300 msk = FIELD_DP32(msk, GER_MSK, YMSK, ymsk); 301 msk = FIELD_DP32(msk, GER_MSK, PMSK, pmsk); 302 return msk; 303 } 304 305 #endif /* PPC_INTERNAL_H */ 306