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qemu/target/ppc/internal.h
Marc-André Lureau 8905770b27 compiler.h: replace QEMU_NORETURN with G_NORETURN 
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in
glib-compat.

Note that this attribute must be placed before the function declaration
(bringing a bit of consistency in qemu codebase usage).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
2022-04-21 17:03:51 +04:00

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/*
* 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);
G_NORETURN void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
MMUAccessType access_type, int mmu_idx,
uintptr_t retaddr);
#endif
#endif /* PPC_INTERNAL_H */
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