2 * PowerPC internal definitions for qemu.
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.
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.
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/>.
18 #ifndef PPC_INTERNAL_H
19 #define PPC_INTERNAL_H
21 #include "hw/registerfields.h"
32 #define FUNC_MASK(name, ret_type, size, max_val) \
33 static inline ret_type name(uint##size##_t start, \
36 ret_type ret, max_bit = size - 1; \
38 if (likely(start == 0)) { \
39 ret = max_val << (max_bit - end); \
40 } else if (likely(end == max_bit)) { \
41 ret = max_val >> start; \
43 ret = (((uint##size##_t)(-1ULL)) >> (start)) ^ \
44 (((uint##size##_t)(-1ULL) >> (end)) >> 1); \
45 if (unlikely(start > end)) { \
53 #if defined(TARGET_PPC64)
54 FUNC_MASK(MASK, target_ulong, 64, UINT64_MAX);
56 FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX);
58 FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX);
59 FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX);
61 /*****************************************************************************/
62 /*** Instruction decoding ***/
63 #define EXTRACT_HELPER(name, shift, nb) \
64 static inline uint32_t name(uint32_t opcode) \
66 return extract32(opcode, shift, nb); \
69 #define EXTRACT_SHELPER(name, shift, nb) \
70 static inline int32_t name(uint32_t opcode) \
72 return sextract32(opcode, shift, nb); \
75 #define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
76 static inline uint32_t name(uint32_t opcode) \
78 return extract32(opcode, shift1, nb1) << nb2 | \
79 extract32(opcode, shift2, nb2); \
82 #define EXTRACT_HELPER_SPLIT_3(name, \
83 d0_bits, shift_op_d0, shift_d0, \
84 d1_bits, shift_op_d1, shift_d1, \
85 d2_bits, shift_op_d2, shift_d2) \
86 static inline int16_t name(uint32_t opcode) \
89 (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \
90 (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \
91 (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \
96 EXTRACT_HELPER(opc1, 26, 6);
98 EXTRACT_HELPER(opc2, 1, 5);
100 EXTRACT_HELPER(opc3, 6, 5);
102 EXTRACT_HELPER(opc4, 16, 5);
103 /* Update Cr0 flags */
104 EXTRACT_HELPER(Rc, 0, 1);
105 /* Update Cr6 flags (Altivec) */
106 EXTRACT_HELPER(Rc21, 10, 1);
108 EXTRACT_HELPER(rD, 21, 5);
110 EXTRACT_HELPER(rS, 21, 5);
112 EXTRACT_HELPER(rA, 16, 5);
114 EXTRACT_HELPER(rB, 11, 5);
116 EXTRACT_HELPER(rC, 6, 5);
118 EXTRACT_HELPER(crfD, 23, 3);
119 EXTRACT_HELPER(BF, 23, 3);
120 EXTRACT_HELPER(crfS, 18, 3);
121 EXTRACT_HELPER(crbD, 21, 5);
122 EXTRACT_HELPER(crbA, 16, 5);
123 EXTRACT_HELPER(crbB, 11, 5);
125 EXTRACT_HELPER(_SPR, 11, 10);
126 static inline uint32_t SPR(uint32_t opcode)
128 uint32_t sprn = _SPR(opcode);
130 return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
132 /*** Get constants ***/
133 /* 16 bits signed immediate value */
134 EXTRACT_SHELPER(SIMM, 0, 16);
135 /* 16 bits unsigned immediate value */
136 EXTRACT_HELPER(UIMM, 0, 16);
137 /* 5 bits signed immediate value */
138 EXTRACT_SHELPER(SIMM5, 16, 5);
139 /* 5 bits signed immediate value */
140 EXTRACT_HELPER(UIMM5, 16, 5);
141 /* 4 bits unsigned immediate value */
142 EXTRACT_HELPER(UIMM4, 16, 4);
144 EXTRACT_HELPER(NB, 11, 5);
146 EXTRACT_HELPER(SH, 11, 5);
147 /* lwat/stwat/ldat/lwat */
148 EXTRACT_HELPER(FC, 11, 5);
149 /* Vector shift count */
150 EXTRACT_HELPER(VSH, 6, 4);
152 EXTRACT_HELPER(MB, 6, 5);
154 EXTRACT_HELPER(ME, 1, 5);
156 EXTRACT_HELPER(TO, 21, 5);
158 EXTRACT_HELPER(CRM, 12, 8);
160 #ifndef CONFIG_USER_ONLY
161 EXTRACT_HELPER(SR, 16, 4);
165 EXTRACT_HELPER(FPBF, 23, 3);
166 EXTRACT_HELPER(FPIMM, 12, 4);
167 EXTRACT_HELPER(FPL, 25, 1);
168 EXTRACT_HELPER(FPFLM, 17, 8);
169 EXTRACT_HELPER(FPW, 16, 1);
172 EXTRACT_HELPER_SPLIT_3(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0)
173 #if defined(TARGET_PPC64)
175 EXTRACT_HELPER(L, 16, 2);
178 EXTRACT_HELPER(WC, 21, 2);
179 EXTRACT_HELPER(PL, 16, 2);
181 /*** Jump target decoding ***/
182 /* Immediate address */
183 static inline target_ulong LI(uint32_t opcode)
185 return (opcode >> 0) & 0x03FFFFFC;
188 static inline uint32_t BD(uint32_t opcode)
190 return (opcode >> 0) & 0xFFFC;
193 EXTRACT_HELPER(BO, 21, 5);
194 EXTRACT_HELPER(BI, 16, 5);
195 /* Absolute/relative address */
196 EXTRACT_HELPER(AA, 1, 1);
198 EXTRACT_HELPER(LK, 0, 1);
201 EXTRACT_HELPER(DCM, 10, 6)
204 EXTRACT_HELPER(RMC, 9, 2)
205 EXTRACT_HELPER(Rrm, 16, 1)
207 EXTRACT_HELPER_SPLIT(DQxT, 3, 1, 21, 5);
208 EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
209 EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
210 EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
211 EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
212 EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
213 EXTRACT_HELPER(DM, 8, 2);
214 EXTRACT_HELPER(UIM, 16, 2);
215 EXTRACT_HELPER(SHW, 8, 2);
216 EXTRACT_HELPER(SP, 19, 2);
217 EXTRACT_HELPER(IMM8, 11, 8);
218 EXTRACT_HELPER(DCMX, 16, 7);
219 EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6);
221 void helper_compute_fprf_float16(CPUPPCState *env, float16 arg);
222 void helper_compute_fprf_float32(CPUPPCState *env, float32 arg);
223 void helper_compute_fprf_float128(CPUPPCState *env, float128 arg);
227 int ppc_fixup_cpu(PowerPCCPU *cpu);
228 void create_ppc_opcodes(PowerPCCPU *cpu, Error **errp);
229 void destroy_ppc_opcodes(PowerPCCPU *cpu);
232 void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc);
233 const gchar *ppc_gdb_arch_name(CPUState *cs);
236 * prot_for_access_type:
237 * @access_type: Access type
239 * Return the protection bit required for the given access type.
241 static inline int prot_for_access_type(MMUAccessType access_type)
243 switch (access_type) {
251 g_assert_not_reached();
254 #ifndef CONFIG_USER_ONLY
256 /* PowerPC MMU emulation */
258 typedef struct mmu_ctx_t mmu_ctx_t;
260 bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
261 hwaddr *raddrp, int *psizep, int *protp,
262 int mmu_idx, bool guest_visible);
263 int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
265 MMUAccessType access_type, int type,
267 /* Software driven TLB helpers */
268 int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
269 int way, int is_code);
270 /* Context used internally during MMU translations */
272 hwaddr raddr; /* Real address */
273 hwaddr eaddr; /* Effective address */
274 int prot; /* Protection bits */
275 hwaddr hash[2]; /* Pagetable hash values */
276 target_ulong ptem; /* Virtual segment ID | API */
277 int key; /* Access key */
278 int nx; /* Non-execute area */
281 #endif /* !CONFIG_USER_ONLY */
283 /* Common routines used by software and hardware TLBs emulation */
284 static inline int pte_is_valid(target_ulong pte0)
286 return pte0 & 0x80000000 ? 1 : 0;
289 static inline void pte_invalidate(target_ulong *pte0)
291 *pte0 &= ~0x80000000;
294 #define PTE_PTEM_MASK 0x7FFFFFBF
295 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
297 #ifdef CONFIG_USER_ONLY
298 void ppc_cpu_record_sigsegv(CPUState *cs, vaddr addr,
299 MMUAccessType access_type,
300 bool maperr, uintptr_t ra);
302 bool ppc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
303 MMUAccessType access_type, int mmu_idx,
304 bool probe, uintptr_t retaddr);
305 G_NORETURN void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
306 MMUAccessType access_type, int mmu_idx,
308 void ppc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
309 vaddr addr, unsigned size,
310 MMUAccessType access_type,
311 int mmu_idx, MemTxAttrs attrs,
312 MemTxResult response, uintptr_t retaddr);
313 void ppc_cpu_debug_excp_handler(CPUState *cs);
314 bool ppc_cpu_debug_check_breakpoint(CPUState *cs);
315 bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp);
318 FIELD(GER_MSK, XMSK, 0, 4)
319 FIELD(GER_MSK, YMSK, 4, 4)
320 FIELD(GER_MSK, PMSK, 8, 8)
322 static inline int ger_pack_masks(int pmsk, int ymsk, int xmsk)
325 msk = FIELD_DP32(msk, GER_MSK, XMSK, xmsk);
326 msk = FIELD_DP32(msk, GER_MSK, YMSK, ymsk);
327 msk = FIELD_DP32(msk, GER_MSK, PMSK, pmsk);
331 #endif /* PPC_INTERNAL_H */