mirror of
https://git.proxmox.com/git/qemu
synced 2025-10-31 13:19:36 +00:00
6b9175478e
This patch refactors the way the CPU state is handled that is associated with a TB. The basic motivation is to move more arch specific code out of generic files. Specifically the long #ifdef clutter in tb_find_fast() has to be overcome in order to avoid duplicating it for the gdb watchpoint fixes (patch "Restore pc on watchpoint hits"). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5736 c046a42c-6fe2-441c-8c8c-71466251a162
286 lines
9.0 KiB
C
286 lines
9.0 KiB
C
/*
|
|
* SH4 emulation
|
|
*
|
|
* Copyright (c) 2005 Samuel Tardieu
|
|
*
|
|
* 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 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef _CPU_SH4_H
|
|
#define _CPU_SH4_H
|
|
|
|
#include "config.h"
|
|
|
|
#define TARGET_LONG_BITS 32
|
|
#define TARGET_HAS_ICE 1
|
|
|
|
#define ELF_MACHINE EM_SH
|
|
|
|
/* CPU Subtypes */
|
|
#define SH_CPU_SH7750 (1 << 0)
|
|
#define SH_CPU_SH7750S (1 << 1)
|
|
#define SH_CPU_SH7750R (1 << 2)
|
|
#define SH_CPU_SH7751 (1 << 3)
|
|
#define SH_CPU_SH7751R (1 << 4)
|
|
#define SH_CPU_SH7750_ALL (SH_CPU_SH7750 | SH_CPU_SH7750S | SH_CPU_SH7750R)
|
|
#define SH_CPU_SH7751_ALL (SH_CPU_SH7751 | SH_CPU_SH7751R)
|
|
|
|
#include "cpu-defs.h"
|
|
|
|
#include "softfloat.h"
|
|
|
|
#define TARGET_PAGE_BITS 12 /* 4k XXXXX */
|
|
|
|
#define SR_MD (1 << 30)
|
|
#define SR_RB (1 << 29)
|
|
#define SR_BL (1 << 28)
|
|
#define SR_FD (1 << 15)
|
|
#define SR_M (1 << 9)
|
|
#define SR_Q (1 << 8)
|
|
#define SR_S (1 << 1)
|
|
#define SR_T (1 << 0)
|
|
|
|
#define FPSCR_FR (1 << 21)
|
|
#define FPSCR_SZ (1 << 20)
|
|
#define FPSCR_PR (1 << 19)
|
|
#define FPSCR_DN (1 << 18)
|
|
#define DELAY_SLOT (1 << 0)
|
|
#define DELAY_SLOT_CONDITIONAL (1 << 1)
|
|
#define DELAY_SLOT_TRUE (1 << 2)
|
|
#define DELAY_SLOT_CLEARME (1 << 3)
|
|
/* The dynamic value of the DELAY_SLOT_TRUE flag determines whether the jump
|
|
* after the delay slot should be taken or not. It is calculated from SR_T.
|
|
*
|
|
* It is unclear if it is permitted to modify the SR_T flag in a delay slot.
|
|
* The use of DELAY_SLOT_TRUE flag makes us accept such SR_T modification.
|
|
*/
|
|
|
|
/* XXXXX The structure could be made more compact */
|
|
typedef struct tlb_t {
|
|
uint8_t asid; /* address space identifier */
|
|
uint32_t vpn; /* virtual page number */
|
|
uint8_t v; /* validity */
|
|
uint32_t ppn; /* physical page number */
|
|
uint8_t sz; /* page size */
|
|
uint32_t size; /* cached page size in bytes */
|
|
uint8_t sh; /* share status */
|
|
uint8_t c; /* cacheability */
|
|
uint8_t pr; /* protection key */
|
|
uint8_t d; /* dirty */
|
|
uint8_t wt; /* write through */
|
|
uint8_t sa; /* space attribute (PCMCIA) */
|
|
uint8_t tc; /* timing control */
|
|
} tlb_t;
|
|
|
|
#define UTLB_SIZE 64
|
|
#define ITLB_SIZE 4
|
|
|
|
#define NB_MMU_MODES 2
|
|
|
|
typedef struct CPUSH4State {
|
|
int id; /* CPU model */
|
|
|
|
uint32_t flags; /* general execution flags */
|
|
uint32_t gregs[24]; /* general registers */
|
|
float32 fregs[32]; /* floating point registers */
|
|
uint32_t sr; /* status register */
|
|
uint32_t ssr; /* saved status register */
|
|
uint32_t spc; /* saved program counter */
|
|
uint32_t gbr; /* global base register */
|
|
uint32_t vbr; /* vector base register */
|
|
uint32_t sgr; /* saved global register 15 */
|
|
uint32_t dbr; /* debug base register */
|
|
uint32_t pc; /* program counter */
|
|
uint32_t delayed_pc; /* target of delayed jump */
|
|
uint32_t mach; /* multiply and accumulate high */
|
|
uint32_t macl; /* multiply and accumulate low */
|
|
uint32_t pr; /* procedure register */
|
|
uint32_t fpscr; /* floating point status/control register */
|
|
uint32_t fpul; /* floating point communication register */
|
|
|
|
/* float point status register */
|
|
float_status fp_status;
|
|
|
|
/* Those belong to the specific unit (SH7750) but are handled here */
|
|
uint32_t mmucr; /* MMU control register */
|
|
uint32_t pteh; /* page table entry high register */
|
|
uint32_t ptel; /* page table entry low register */
|
|
uint32_t ptea; /* page table entry assistance register */
|
|
uint32_t ttb; /* tranlation table base register */
|
|
uint32_t tea; /* TLB exception address register */
|
|
uint32_t tra; /* TRAPA exception register */
|
|
uint32_t expevt; /* exception event register */
|
|
uint32_t intevt; /* interrupt event register */
|
|
|
|
uint32_t pvr; /* Processor Version Register */
|
|
uint32_t prr; /* Processor Revision Register */
|
|
uint32_t cvr; /* Cache Version Register */
|
|
|
|
CPU_COMMON tlb_t utlb[UTLB_SIZE]; /* unified translation table */
|
|
tlb_t itlb[ITLB_SIZE]; /* instruction translation table */
|
|
void *intc_handle;
|
|
int intr_at_halt; /* SR_BL ignored during sleep */
|
|
} CPUSH4State;
|
|
|
|
CPUSH4State *cpu_sh4_init(const char *cpu_model);
|
|
int cpu_sh4_exec(CPUSH4State * s);
|
|
int cpu_sh4_signal_handler(int host_signum, void *pinfo,
|
|
void *puc);
|
|
void sh4_cpu_list(FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
|
|
void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
|
|
uint32_t mem_value);
|
|
|
|
static inline void cpu_set_tls(CPUSH4State *env, target_ulong newtls)
|
|
{
|
|
env->gbr = newtls;
|
|
}
|
|
|
|
#include "softfloat.h"
|
|
|
|
#define CPUState CPUSH4State
|
|
#define cpu_init cpu_sh4_init
|
|
#define cpu_exec cpu_sh4_exec
|
|
#define cpu_gen_code cpu_sh4_gen_code
|
|
#define cpu_signal_handler cpu_sh4_signal_handler
|
|
#define cpu_list sh4_cpu_list
|
|
|
|
/* MMU modes definitions */
|
|
#define MMU_MODE0_SUFFIX _kernel
|
|
#define MMU_MODE1_SUFFIX _user
|
|
#define MMU_USER_IDX 1
|
|
static inline int cpu_mmu_index (CPUState *env)
|
|
{
|
|
return (env->sr & SR_MD) == 0 ? 1 : 0;
|
|
}
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
|
|
{
|
|
if (newsp)
|
|
env->gregs[15] = newsp;
|
|
env->gregs[0] = 0;
|
|
}
|
|
#endif
|
|
|
|
#include "cpu-all.h"
|
|
#include "exec-all.h"
|
|
|
|
/* Memory access type */
|
|
enum {
|
|
/* Privilege */
|
|
ACCESS_PRIV = 0x01,
|
|
/* Direction */
|
|
ACCESS_WRITE = 0x02,
|
|
/* Type of instruction */
|
|
ACCESS_CODE = 0x10,
|
|
ACCESS_INT = 0x20
|
|
};
|
|
|
|
/* MMU control register */
|
|
#define MMUCR 0x1F000010
|
|
#define MMUCR_AT (1<<0)
|
|
#define MMUCR_SV (1<<8)
|
|
#define MMUCR_URC_BITS (6)
|
|
#define MMUCR_URC_OFFSET (10)
|
|
#define MMUCR_URC_SIZE (1 << MMUCR_URC_BITS)
|
|
#define MMUCR_URC_MASK (((MMUCR_URC_SIZE) - 1) << MMUCR_URC_OFFSET)
|
|
static inline int cpu_mmucr_urc (uint32_t mmucr)
|
|
{
|
|
return ((mmucr & MMUCR_URC_MASK) >> MMUCR_URC_OFFSET);
|
|
}
|
|
|
|
/* PTEH : Page Translation Entry High register */
|
|
#define PTEH_ASID_BITS (8)
|
|
#define PTEH_ASID_SIZE (1 << PTEH_ASID_BITS)
|
|
#define PTEH_ASID_MASK (PTEH_ASID_SIZE - 1)
|
|
#define cpu_pteh_asid(pteh) ((pteh) & PTEH_ASID_MASK)
|
|
#define PTEH_VPN_BITS (22)
|
|
#define PTEH_VPN_OFFSET (10)
|
|
#define PTEH_VPN_SIZE (1 << PTEH_VPN_BITS)
|
|
#define PTEH_VPN_MASK (((PTEH_VPN_SIZE) - 1) << PTEH_VPN_OFFSET)
|
|
static inline int cpu_pteh_vpn (uint32_t pteh)
|
|
{
|
|
return ((pteh & PTEH_VPN_MASK) >> PTEH_VPN_OFFSET);
|
|
}
|
|
|
|
/* PTEL : Page Translation Entry Low register */
|
|
#define PTEL_V (1 << 8)
|
|
#define cpu_ptel_v(ptel) (((ptel) & PTEL_V) >> 8)
|
|
#define PTEL_C (1 << 3)
|
|
#define cpu_ptel_c(ptel) (((ptel) & PTEL_C) >> 3)
|
|
#define PTEL_D (1 << 2)
|
|
#define cpu_ptel_d(ptel) (((ptel) & PTEL_D) >> 2)
|
|
#define PTEL_SH (1 << 1)
|
|
#define cpu_ptel_sh(ptel)(((ptel) & PTEL_SH) >> 1)
|
|
#define PTEL_WT (1 << 0)
|
|
#define cpu_ptel_wt(ptel) ((ptel) & PTEL_WT)
|
|
|
|
#define PTEL_SZ_HIGH_OFFSET (7)
|
|
#define PTEL_SZ_HIGH (1 << PTEL_SZ_HIGH_OFFSET)
|
|
#define PTEL_SZ_LOW_OFFSET (4)
|
|
#define PTEL_SZ_LOW (1 << PTEL_SZ_LOW_OFFSET)
|
|
static inline int cpu_ptel_sz (uint32_t ptel)
|
|
{
|
|
int sz;
|
|
sz = (ptel & PTEL_SZ_HIGH) >> PTEL_SZ_HIGH_OFFSET;
|
|
sz <<= 1;
|
|
sz |= (ptel & PTEL_SZ_LOW) >> PTEL_SZ_LOW_OFFSET;
|
|
return sz;
|
|
}
|
|
|
|
#define PTEL_PPN_BITS (19)
|
|
#define PTEL_PPN_OFFSET (10)
|
|
#define PTEL_PPN_SIZE (1 << PTEL_PPN_BITS)
|
|
#define PTEL_PPN_MASK (((PTEL_PPN_SIZE) - 1) << PTEL_PPN_OFFSET)
|
|
static inline int cpu_ptel_ppn (uint32_t ptel)
|
|
{
|
|
return ((ptel & PTEL_PPN_MASK) >> PTEL_PPN_OFFSET);
|
|
}
|
|
|
|
#define PTEL_PR_BITS (2)
|
|
#define PTEL_PR_OFFSET (5)
|
|
#define PTEL_PR_SIZE (1 << PTEL_PR_BITS)
|
|
#define PTEL_PR_MASK (((PTEL_PR_SIZE) - 1) << PTEL_PR_OFFSET)
|
|
static inline int cpu_ptel_pr (uint32_t ptel)
|
|
{
|
|
return ((ptel & PTEL_PR_MASK) >> PTEL_PR_OFFSET);
|
|
}
|
|
|
|
/* PTEA : Page Translation Entry Assistance register */
|
|
#define PTEA_SA_BITS (3)
|
|
#define PTEA_SA_SIZE (1 << PTEA_SA_BITS)
|
|
#define PTEA_SA_MASK (PTEA_SA_SIZE - 1)
|
|
#define cpu_ptea_sa(ptea) ((ptea) & PTEA_SA_MASK)
|
|
#define PTEA_TC (1 << 3)
|
|
#define cpu_ptea_tc(ptea) (((ptea) & PTEA_TC) >> 3)
|
|
|
|
static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
|
|
{
|
|
env->pc = tb->pc;
|
|
env->flags = tb->flags;
|
|
}
|
|
|
|
static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
|
|
target_ulong *cs_base, int *flags)
|
|
{
|
|
*pc = env->pc;
|
|
*cs_base = 0;
|
|
*flags = (env->flags & (DELAY_SLOT | DELAY_SLOT_CONDITIONAL
|
|
| DELAY_SLOT_TRUE | DELAY_SLOT_CLEARME)) /* Bits 0- 3 */
|
|
| (env->fpscr & (FPSCR_FR | FPSCR_SZ | FPSCR_PR)) /* Bits 19-21 */
|
|
| (env->sr & (SR_MD | SR_RB)); /* Bits 29-30 */
|
|
}
|
|
|
|
#endif /* _CPU_SH4_H */
|