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310 lines
11 KiB
C
310 lines
11 KiB
C
/*
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* PowerPC internal definitions for qemu.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PPC_INTERNAL_H
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#define PPC_INTERNAL_H
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#include "hw/registerfields.h"
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#define FUNC_MASK(name, ret_type, size, max_val) \
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static inline ret_type name(uint##size##_t start, \
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uint##size##_t end) \
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{ \
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ret_type ret, max_bit = size - 1; \
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\
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if (likely(start == 0)) { \
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ret = max_val << (max_bit - end); \
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} else if (likely(end == max_bit)) { \
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ret = max_val >> start; \
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} else { \
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ret = (((uint##size##_t)(-1ULL)) >> (start)) ^ \
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(((uint##size##_t)(-1ULL) >> (end)) >> 1); \
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if (unlikely(start > end)) { \
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return ~ret; \
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} \
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} \
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\
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return ret; \
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}
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#if defined(TARGET_PPC64)
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FUNC_MASK(MASK, target_ulong, 64, UINT64_MAX);
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#else
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FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX);
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#endif
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FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX);
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FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX);
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/*****************************************************************************/
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/*** Instruction decoding ***/
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#define EXTRACT_HELPER(name, shift, nb) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return extract32(opcode, shift, nb); \
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}
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#define EXTRACT_SHELPER(name, shift, nb) \
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static inline int32_t name(uint32_t opcode) \
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{ \
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return sextract32(opcode, shift, nb); \
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}
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#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return extract32(opcode, shift1, nb1) << nb2 | \
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extract32(opcode, shift2, nb2); \
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}
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#define EXTRACT_HELPER_SPLIT_3(name, \
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d0_bits, shift_op_d0, shift_d0, \
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d1_bits, shift_op_d1, shift_d1, \
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d2_bits, shift_op_d2, shift_d2) \
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static inline int16_t name(uint32_t opcode) \
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{ \
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return \
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(((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \
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(((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \
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(((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \
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}
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/* Opcode part 1 */
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EXTRACT_HELPER(opc1, 26, 6);
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/* Opcode part 2 */
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EXTRACT_HELPER(opc2, 1, 5);
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/* Opcode part 3 */
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EXTRACT_HELPER(opc3, 6, 5);
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/* Opcode part 4 */
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EXTRACT_HELPER(opc4, 16, 5);
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/* Update Cr0 flags */
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EXTRACT_HELPER(Rc, 0, 1);
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/* Update Cr6 flags (Altivec) */
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EXTRACT_HELPER(Rc21, 10, 1);
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/* Destination */
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EXTRACT_HELPER(rD, 21, 5);
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/* Source */
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EXTRACT_HELPER(rS, 21, 5);
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/* First operand */
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EXTRACT_HELPER(rA, 16, 5);
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/* Second operand */
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EXTRACT_HELPER(rB, 11, 5);
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/* Third operand */
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EXTRACT_HELPER(rC, 6, 5);
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/*** Get CRn ***/
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EXTRACT_HELPER(crfD, 23, 3);
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EXTRACT_HELPER(BF, 23, 3);
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EXTRACT_HELPER(crfS, 18, 3);
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EXTRACT_HELPER(crbD, 21, 5);
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EXTRACT_HELPER(crbA, 16, 5);
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EXTRACT_HELPER(crbB, 11, 5);
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/* SPR / TBL */
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EXTRACT_HELPER(_SPR, 11, 10);
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static inline uint32_t SPR(uint32_t opcode)
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{
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uint32_t sprn = _SPR(opcode);
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return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
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}
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/*** Get constants ***/
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/* 16 bits signed immediate value */
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EXTRACT_SHELPER(SIMM, 0, 16);
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/* 16 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM, 0, 16);
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/* 5 bits signed immediate value */
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EXTRACT_SHELPER(SIMM5, 16, 5);
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/* 5 bits signed immediate value */
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EXTRACT_HELPER(UIMM5, 16, 5);
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/* 4 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM4, 16, 4);
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/* Bit count */
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EXTRACT_HELPER(NB, 11, 5);
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/* Shift count */
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EXTRACT_HELPER(SH, 11, 5);
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/* lwat/stwat/ldat/lwat */
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EXTRACT_HELPER(FC, 11, 5);
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/* Vector shift count */
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EXTRACT_HELPER(VSH, 6, 4);
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/* Mask start */
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EXTRACT_HELPER(MB, 6, 5);
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/* Mask end */
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EXTRACT_HELPER(ME, 1, 5);
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/* Trap operand */
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EXTRACT_HELPER(TO, 21, 5);
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EXTRACT_HELPER(CRM, 12, 8);
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#ifndef CONFIG_USER_ONLY
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EXTRACT_HELPER(SR, 16, 4);
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#endif
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/* mtfsf/mtfsfi */
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EXTRACT_HELPER(FPBF, 23, 3);
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EXTRACT_HELPER(FPIMM, 12, 4);
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EXTRACT_HELPER(FPL, 25, 1);
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EXTRACT_HELPER(FPFLM, 17, 8);
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EXTRACT_HELPER(FPW, 16, 1);
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/* addpcis */
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EXTRACT_HELPER_SPLIT_3(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0)
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#if defined(TARGET_PPC64)
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/* darn */
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EXTRACT_HELPER(L, 16, 2);
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#endif
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/* wait */
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EXTRACT_HELPER(WC, 21, 2);
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EXTRACT_HELPER(PL, 16, 2);
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/*** Jump target decoding ***/
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/* Immediate address */
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static inline target_ulong LI(uint32_t opcode)
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{
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return (opcode >> 0) & 0x03FFFFFC;
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}
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static inline uint32_t BD(uint32_t opcode)
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{
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return (opcode >> 0) & 0xFFFC;
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}
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EXTRACT_HELPER(BO, 21, 5);
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EXTRACT_HELPER(BI, 16, 5);
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/* Absolute/relative address */
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EXTRACT_HELPER(AA, 1, 1);
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/* Link */
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EXTRACT_HELPER(LK, 0, 1);
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/* DFP Z22-form */
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EXTRACT_HELPER(DCM, 10, 6)
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/* DFP Z23-form */
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EXTRACT_HELPER(RMC, 9, 2)
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EXTRACT_HELPER(Rrm, 16, 1)
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EXTRACT_HELPER_SPLIT(DQxT, 3, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
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EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
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EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
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EXTRACT_HELPER(DM, 8, 2);
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EXTRACT_HELPER(UIM, 16, 2);
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EXTRACT_HELPER(SHW, 8, 2);
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EXTRACT_HELPER(SP, 19, 2);
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EXTRACT_HELPER(IMM8, 11, 8);
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EXTRACT_HELPER(DCMX, 16, 7);
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EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6);
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void helper_compute_fprf_float16(CPUPPCState *env, float16 arg);
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void helper_compute_fprf_float32(CPUPPCState *env, float32 arg);
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void helper_compute_fprf_float128(CPUPPCState *env, float128 arg);
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/* translate.c */
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int ppc_fixup_cpu(PowerPCCPU *cpu);
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void create_ppc_opcodes(PowerPCCPU *cpu, Error **errp);
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void destroy_ppc_opcodes(PowerPCCPU *cpu);
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/* gdbstub.c */
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void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc);
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gchar *ppc_gdb_arch_name(CPUState *cs);
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/**
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* prot_for_access_type:
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* @access_type: Access type
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*
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* Return the protection bit required for the given access type.
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*/
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static inline int prot_for_access_type(MMUAccessType access_type)
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{
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switch (access_type) {
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case MMU_INST_FETCH:
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return PAGE_EXEC;
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case MMU_DATA_LOAD:
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return PAGE_READ;
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case MMU_DATA_STORE:
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return PAGE_WRITE;
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}
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g_assert_not_reached();
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}
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/* PowerPC MMU emulation */
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typedef struct mmu_ctx_t mmu_ctx_t;
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bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
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hwaddr *raddrp, int *psizep, int *protp,
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int mmu_idx, bool guest_visible);
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int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
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target_ulong eaddr,
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MMUAccessType access_type, int type,
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int mmu_idx);
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/* Software driven TLB helpers */
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int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
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int way, int is_code);
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/* Context used internally during MMU translations */
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struct mmu_ctx_t {
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hwaddr raddr; /* Real address */
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hwaddr eaddr; /* Effective address */
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int prot; /* Protection bits */
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hwaddr hash[2]; /* Pagetable hash values */
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target_ulong ptem; /* Virtual segment ID | API */
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int key; /* Access key */
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int nx; /* Non-execute area */
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};
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/* Common routines used by software and hardware TLBs emulation */
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static inline int pte_is_valid(target_ulong pte0)
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{
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return pte0 & 0x80000000 ? 1 : 0;
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}
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static inline void pte_invalidate(target_ulong *pte0)
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{
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*pte0 &= ~0x80000000;
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}
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#define PTE_PTEM_MASK 0x7FFFFFBF
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#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
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#ifdef CONFIG_USER_ONLY
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void ppc_cpu_record_sigsegv(CPUState *cs, vaddr addr,
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MMUAccessType access_type,
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bool maperr, uintptr_t ra);
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#else
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bool ppc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
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MMUAccessType access_type, int mmu_idx,
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bool probe, uintptr_t retaddr);
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G_NORETURN void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
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MMUAccessType access_type, int mmu_idx,
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uintptr_t retaddr);
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#endif
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FIELD(GER_MSK, XMSK, 0, 4)
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FIELD(GER_MSK, YMSK, 4, 4)
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FIELD(GER_MSK, PMSK, 8, 8)
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static inline int ger_pack_masks(int pmsk, int ymsk, int xmsk)
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{
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int msk = 0;
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msk = FIELD_DP32(msk, GER_MSK, XMSK, xmsk);
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msk = FIELD_DP32(msk, GER_MSK, YMSK, ymsk);
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msk = FIELD_DP32(msk, GER_MSK, PMSK, pmsk);
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return msk;
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}
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#endif /* PPC_INTERNAL_H */
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