cd1038ec1d
Checking if a page protection bit is set for a given access type is a common operation. Add a function to avoid repeating the same check at multiple places. As this relies on access type and page protection bit values having certain relation also add an assert to ensure that this assumption holds. Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
306 lines
10 KiB
C
306 lines
10 KiB
C
/*
|
|
* 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
|
|
|
|
#include "exec/breakpoint.h"
|
|
#include "hw/registerfields.h"
|
|
#include "exec/page-protection.h"
|
|
|
|
/* PM instructions */
|
|
typedef enum {
|
|
PPC_PM_DOZE,
|
|
PPC_PM_NAP,
|
|
PPC_PM_SLEEP,
|
|
PPC_PM_RVWINKLE,
|
|
PPC_PM_STOP,
|
|
} powerpc_pm_insn_t;
|
|
|
|
#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);
|
|
|
|
/* 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
|
|
/* wait */
|
|
EXTRACT_HELPER(WC, 21, 2);
|
|
EXTRACT_HELPER(PL, 16, 2);
|
|
|
|
/*** 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);
|
|
const gchar *ppc_gdb_arch_name(CPUState *cs);
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
|
|
/* Check if permission bit required for the access_type is set in prot */
|
|
static inline int check_prot_access_type(int prot, MMUAccessType access_type)
|
|
{
|
|
return prot & (1 << access_type);
|
|
}
|
|
|
|
/* PowerPC MMU emulation */
|
|
|
|
bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
|
|
hwaddr *raddrp, int *psizep, int *protp,
|
|
int mmu_idx, bool guest_visible);
|
|
|
|
/* Software driven TLB helpers */
|
|
int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
|
|
int way, int is_code);
|
|
|
|
#endif /* !CONFIG_USER_ONLY */
|
|
|
|
/* 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);
|
|
G_NORETURN void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
|
|
MMUAccessType access_type, int mmu_idx,
|
|
uintptr_t retaddr);
|
|
void ppc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
|
|
vaddr addr, unsigned size,
|
|
MMUAccessType access_type,
|
|
int mmu_idx, MemTxAttrs attrs,
|
|
MemTxResult response, uintptr_t retaddr);
|
|
void ppc_cpu_debug_excp_handler(CPUState *cs);
|
|
bool ppc_cpu_debug_check_breakpoint(CPUState *cs);
|
|
bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp);
|
|
#endif
|
|
|
|
FIELD(GER_MSK, XMSK, 0, 4)
|
|
FIELD(GER_MSK, YMSK, 4, 4)
|
|
FIELD(GER_MSK, PMSK, 8, 8)
|
|
|
|
static inline int ger_pack_masks(int pmsk, int ymsk, int xmsk)
|
|
{
|
|
int msk = 0;
|
|
msk = FIELD_DP32(msk, GER_MSK, XMSK, xmsk);
|
|
msk = FIELD_DP32(msk, GER_MSK, YMSK, ymsk);
|
|
msk = FIELD_DP32(msk, GER_MSK, PMSK, pmsk);
|
|
return msk;
|
|
}
|
|
|
|
#endif /* PPC_INTERNAL_H */
|