| /* |
| * PowerPC internal definitions for qemu. |
| * |
| * 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 2.1 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/>. |
| */ |
| |
| #ifndef PPC_INTERNAL_H |
| #define PPC_INTERNAL_H |
| |
| #define FUNC_MASK(name, ret_type, size, max_val) \ |
| static inline ret_type name(uint##size##_t start, \ |
| uint##size##_t end) \ |
| { \ |
| ret_type ret, max_bit = size - 1; \ |
| \ |
| if (likely(start == 0)) { \ |
| ret = max_val << (max_bit - end); \ |
| } else if (likely(end == max_bit)) { \ |
| ret = max_val >> start; \ |
| } else { \ |
| ret = (((uint##size##_t)(-1ULL)) >> (start)) ^ \ |
| (((uint##size##_t)(-1ULL) >> (end)) >> 1); \ |
| if (unlikely(start > end)) { \ |
| return ~ret; \ |
| } \ |
| } \ |
| \ |
| return ret; \ |
| } |
| |
| #if defined(TARGET_PPC64) |
| FUNC_MASK(MASK, target_ulong, 64, UINT64_MAX); |
| #else |
| FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX); |
| #endif |
| FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX); |
| FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX); |
| |
| /*****************************************************************************/ |
| /*** Instruction decoding ***/ |
| #define EXTRACT_HELPER(name, shift, nb) \ |
| static inline uint32_t name(uint32_t opcode) \ |
| { \ |
| return extract32(opcode, shift, nb); \ |
| } |
| |
| #define EXTRACT_SHELPER(name, shift, nb) \ |
| static inline int32_t name(uint32_t opcode) \ |
| { \ |
| return sextract32(opcode, shift, nb); \ |
| } |
| |
| #define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \ |
| static inline uint32_t name(uint32_t opcode) \ |
| { \ |
| return extract32(opcode, shift1, nb1) << nb2 | \ |
| extract32(opcode, shift2, nb2); \ |
| } |
| |
| #define EXTRACT_HELPER_SPLIT_3(name, \ |
| d0_bits, shift_op_d0, shift_d0, \ |
| d1_bits, shift_op_d1, shift_d1, \ |
| d2_bits, shift_op_d2, shift_d2) \ |
| static inline int16_t name(uint32_t opcode) \ |
| { \ |
| return \ |
| (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \ |
| (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \ |
| (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \ |
| } |
| |
| |
| /* Opcode part 1 */ |
| EXTRACT_HELPER(opc1, 26, 6); |
| /* Opcode part 2 */ |
| EXTRACT_HELPER(opc2, 1, 5); |
| /* Opcode part 3 */ |
| EXTRACT_HELPER(opc3, 6, 5); |
| /* Opcode part 4 */ |
| EXTRACT_HELPER(opc4, 16, 5); |
| /* Update Cr0 flags */ |
| EXTRACT_HELPER(Rc, 0, 1); |
| /* Update Cr6 flags (Altivec) */ |
| EXTRACT_HELPER(Rc21, 10, 1); |
| /* Destination */ |
| EXTRACT_HELPER(rD, 21, 5); |
| /* Source */ |
| EXTRACT_HELPER(rS, 21, 5); |
| /* First operand */ |
| EXTRACT_HELPER(rA, 16, 5); |
| /* Second operand */ |
| EXTRACT_HELPER(rB, 11, 5); |
| /* Third operand */ |
| EXTRACT_HELPER(rC, 6, 5); |
| /*** Get CRn ***/ |
| EXTRACT_HELPER(crfD, 23, 3); |
| EXTRACT_HELPER(BF, 23, 3); |
| EXTRACT_HELPER(crfS, 18, 3); |
| EXTRACT_HELPER(crbD, 21, 5); |
| EXTRACT_HELPER(crbA, 16, 5); |
| EXTRACT_HELPER(crbB, 11, 5); |
| /* SPR / TBL */ |
| EXTRACT_HELPER(_SPR, 11, 10); |
| static inline uint32_t SPR(uint32_t opcode) |
| { |
| uint32_t sprn = _SPR(opcode); |
| |
| return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5); |
| } |
| /*** Get constants ***/ |
| /* 16 bits signed immediate value */ |
| EXTRACT_SHELPER(SIMM, 0, 16); |
| /* 16 bits unsigned immediate value */ |
| EXTRACT_HELPER(UIMM, 0, 16); |
| /* 5 bits signed immediate value */ |
| EXTRACT_SHELPER(SIMM5, 16, 5); |
| /* 5 bits signed immediate value */ |
| EXTRACT_HELPER(UIMM5, 16, 5); |
| /* 4 bits unsigned immediate value */ |
| EXTRACT_HELPER(UIMM4, 16, 4); |
| /* Bit count */ |
| EXTRACT_HELPER(NB, 11, 5); |
| /* Shift count */ |
| EXTRACT_HELPER(SH, 11, 5); |
| /* lwat/stwat/ldat/lwat */ |
| EXTRACT_HELPER(FC, 11, 5); |
| /* Vector shift count */ |
| EXTRACT_HELPER(VSH, 6, 4); |
| /* Mask start */ |
| EXTRACT_HELPER(MB, 6, 5); |
| /* Mask end */ |
| EXTRACT_HELPER(ME, 1, 5); |
| /* Trap operand */ |
| EXTRACT_HELPER(TO, 21, 5); |
| |
| EXTRACT_HELPER(CRM, 12, 8); |
| |
| #ifndef CONFIG_USER_ONLY |
| EXTRACT_HELPER(SR, 16, 4); |
| #endif |
| |
| /* mtfsf/mtfsfi */ |
| EXTRACT_HELPER(FPBF, 23, 3); |
| EXTRACT_HELPER(FPIMM, 12, 4); |
| EXTRACT_HELPER(FPL, 25, 1); |
| EXTRACT_HELPER(FPFLM, 17, 8); |
| EXTRACT_HELPER(FPW, 16, 1); |
| |
| /* mffscrni */ |
| EXTRACT_HELPER(RM, 11, 2); |
| |
| /* addpcis */ |
| EXTRACT_HELPER_SPLIT_3(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0) |
| #if defined(TARGET_PPC64) |
| /* darn */ |
| EXTRACT_HELPER(L, 16, 2); |
| #endif |
| |
| /*** Jump target decoding ***/ |
| /* Immediate address */ |
| static inline target_ulong LI(uint32_t opcode) |
| { |
| return (opcode >> 0) & 0x03FFFFFC; |
| } |
| |
| static inline uint32_t BD(uint32_t opcode) |
| { |
| return (opcode >> 0) & 0xFFFC; |
| } |
| |
| EXTRACT_HELPER(BO, 21, 5); |
| EXTRACT_HELPER(BI, 16, 5); |
| /* Absolute/relative address */ |
| EXTRACT_HELPER(AA, 1, 1); |
| /* Link */ |
| EXTRACT_HELPER(LK, 0, 1); |
| |
| /* DFP Z22-form */ |
| EXTRACT_HELPER(DCM, 10, 6) |
| |
| /* DFP Z23-form */ |
| EXTRACT_HELPER(RMC, 9, 2) |
| EXTRACT_HELPER(Rrm, 16, 1) |
| |
| EXTRACT_HELPER_SPLIT(DQxT, 3, 1, 21, 5); |
| EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5); |
| EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5); |
| EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5); |
| EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5); |
| EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5); |
| EXTRACT_HELPER(DM, 8, 2); |
| EXTRACT_HELPER(UIM, 16, 2); |
| EXTRACT_HELPER(SHW, 8, 2); |
| EXTRACT_HELPER(SP, 19, 2); |
| EXTRACT_HELPER(IMM8, 11, 8); |
| EXTRACT_HELPER(DCMX, 16, 7); |
| EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6); |
| |
| void helper_compute_fprf_float16(CPUPPCState *env, float16 arg); |
| void helper_compute_fprf_float32(CPUPPCState *env, float32 arg); |
| void helper_compute_fprf_float128(CPUPPCState *env, float128 arg); |
| |
| /* translate.c */ |
| |
| int ppc_fixup_cpu(PowerPCCPU *cpu); |
| void create_ppc_opcodes(PowerPCCPU *cpu, Error **errp); |
| void destroy_ppc_opcodes(PowerPCCPU *cpu); |
| |
| /* gdbstub.c */ |
| void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc); |
| gchar *ppc_gdb_arch_name(CPUState *cs); |
| |
| /** |
| * prot_for_access_type: |
| * @access_type: Access type |
| * |
| * Return the protection bit required for the given access type. |
| */ |
| static inline int prot_for_access_type(MMUAccessType access_type) |
| { |
| switch (access_type) { |
| case MMU_INST_FETCH: |
| return PAGE_EXEC; |
| case MMU_DATA_LOAD: |
| return PAGE_READ; |
| case MMU_DATA_STORE: |
| return PAGE_WRITE; |
| } |
| g_assert_not_reached(); |
| } |
| |
| /* PowerPC MMU emulation */ |
| |
| typedef struct mmu_ctx_t mmu_ctx_t; |
| bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type, |
| hwaddr *raddrp, int *psizep, int *protp, |
| int mmu_idx, bool guest_visible); |
| int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, |
| target_ulong eaddr, |
| MMUAccessType access_type, int type, |
| int mmu_idx); |
| /* Software driven TLB helpers */ |
| int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, |
| int way, int is_code); |
| /* Context used internally during MMU translations */ |
| struct mmu_ctx_t { |
| hwaddr raddr; /* Real address */ |
| hwaddr eaddr; /* Effective address */ |
| int prot; /* Protection bits */ |
| hwaddr hash[2]; /* Pagetable hash values */ |
| target_ulong ptem; /* Virtual segment ID | API */ |
| int key; /* Access key */ |
| int nx; /* Non-execute area */ |
| }; |
| |
| /* Common routines used by software and hardware TLBs emulation */ |
| static inline int pte_is_valid(target_ulong pte0) |
| { |
| return pte0 & 0x80000000 ? 1 : 0; |
| } |
| |
| static inline void pte_invalidate(target_ulong *pte0) |
| { |
| *pte0 &= ~0x80000000; |
| } |
| |
| #define PTE_PTEM_MASK 0x7FFFFFBF |
| #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) |
| |
| #ifdef CONFIG_USER_ONLY |
| void ppc_cpu_record_sigsegv(CPUState *cs, vaddr addr, |
| MMUAccessType access_type, |
| bool maperr, uintptr_t ra); |
| #else |
| bool ppc_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
| MMUAccessType access_type, int mmu_idx, |
| bool probe, uintptr_t retaddr); |
| void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr, |
| MMUAccessType access_type, int mmu_idx, |
| uintptr_t retaddr) QEMU_NORETURN; |
| #endif |
| |
| #endif /* PPC_INTERNAL_H */ |
