emulated_ops.h

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/*
 *  Copyright 2007 Sony Corporation
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _ASM_POWERPC_EMULATED_OPS_H
#define _ASM_POWERPC_EMULATED_OPS_H

#include <linux/atomic.h>
#include <linux/perf_event.h>


#ifdef CONFIG_PPC_EMULATED_STATS

struct ppc_emulated_entry {
    const char *name;
    atomic_t val;
};

extern struct ppc_emulated {
#ifdef CONFIG_ALTIVEC
    struct ppc_emulated_entry altivec;
#endif
    struct ppc_emulated_entry dcba;
    struct ppc_emulated_entry dcbz;
    struct ppc_emulated_entry fp_pair;
    struct ppc_emulated_entry isel;
    struct ppc_emulated_entry mcrxr;
    struct ppc_emulated_entry mfpvr;
    struct ppc_emulated_entry multiple;
    struct ppc_emulated_entry popcntb;
    struct ppc_emulated_entry spe;
    struct ppc_emulated_entry string;
    struct ppc_emulated_entry unaligned;
#ifdef CONFIG_MATH_EMULATION
    struct ppc_emulated_entry math;
#elif defined(CONFIG_8XX_MINIMAL_FPEMU)
    struct ppc_emulated_entry 8xx;
#endif
#ifdef CONFIG_VSX
    struct ppc_emulated_entry vsx;
#endif
#ifdef CONFIG_PPC64
    struct ppc_emulated_entry mfdscr;
    struct ppc_emulated_entry mtdscr;
#endif
} ppc_emulated;

extern u32 ppc_warn_emulated;

extern void ppc_warn_emulated_print(const char *type);

#define __PPC_WARN_EMULATED(type)                    \
    do {                                 \
        atomic_inc(&ppc_emulated.type.val);          \
        if (ppc_warn_emulated)                   \
            ppc_warn_emulated_print(ppc_emulated.type.name); \
    } while (0)

#else /* !CONFIG_PPC_EMULATED_STATS */

#define __PPC_WARN_EMULATED(type)   do { } while (0)

#endif /* !CONFIG_PPC_EMULATED_STATS */

#define PPC_WARN_EMULATED(type, regs)                   \
    do {                                \
        perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,       \
            1, regs, 0);                    \
        __PPC_WARN_EMULATED(type);              \
    } while (0)

#define PPC_WARN_ALIGNMENT(type, regs)                  \
    do {                                \
        perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,       \
            1, regs, regs->dar);                \
        __PPC_WARN_EMULATED(type);              \
    } while (0)

#endif /* _ASM_POWERPC_EMULATED_OPS_H */