[qemu.git] / target-microblaze / op_helper.c

/*
 *  Microblaze helper routines.
 *
 *  Copyright (c) 2009 Edgar E. Iglesias <[email protected]>.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <assert.h>
#include "cpu.h"
#include "dyngen-exec.h"
#include "helper.h"
#include "host-utils.h"

#define D(x)

#if !defined(CONFIG_USER_ONLY)
#include "softmmu_exec.h"

#define MMUSUFFIX _mmu
#define SHIFT 0
#include "softmmu_template.h"
#define SHIFT 1
#include "softmmu_template.h"
#define SHIFT 2
#include "softmmu_template.h"
#define SHIFT 3
#include "softmmu_template.h"

/* Try to fill the TLB and return an exception if error. If retaddr is
   NULL, it means that the function was called in C code (i.e. not
   from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
void tlb_fill(CPUMBState *env1, target_ulong addr, int is_write, int mmu_idx,
              void *retaddr)
{
    TranslationBlock *tb;
    CPUMBState *saved_env;
    unsigned long pc;
    int ret;

    saved_env = env;
    env = env1;

    ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx);
    if (unlikely(ret)) {
        if (retaddr) {
            /* now we have a real cpu fault */
            pc = (unsigned long)retaddr;
            tb = tb_find_pc(pc);
            if (tb) {
                /* the PC is inside the translated code. It means that we have
                   a virtual CPU fault */
                cpu_restore_state(tb, env, pc);
            }
        }
        cpu_loop_exit(env);
    }
    env = saved_env;
}
#endif

void helper_put(uint32_t id, uint32_t ctrl, uint32_t data)
{
    int test = ctrl & STREAM_TEST;
    int atomic = ctrl & STREAM_ATOMIC;
    int control = ctrl & STREAM_CONTROL;
    int nonblock = ctrl & STREAM_NONBLOCK;
    int exception = ctrl & STREAM_EXCEPTION;

    qemu_log("Unhandled stream put to stream-id=%d data=%x %s%s%s%s%s\n",
             id, data,
             test ? "t" : "",
             nonblock ? "n" : "",
             exception ? "e" : "",
             control ? "c" : "",
             atomic ? "a" : "");
}

uint32_t helper_get(uint32_t id, uint32_t ctrl)
{
    int test = ctrl & STREAM_TEST;
    int atomic = ctrl & STREAM_ATOMIC;
    int control = ctrl & STREAM_CONTROL;
    int nonblock = ctrl & STREAM_NONBLOCK;
    int exception = ctrl & STREAM_EXCEPTION;

    qemu_log("Unhandled stream get from stream-id=%d %s%s%s%s%s\n",
             id,
             test ? "t" : "",
             nonblock ? "n" : "",
             exception ? "e" : "",
             control ? "c" : "",
             atomic ? "a" : "");
    return 0xdead0000 | id;
}

void helper_raise_exception(uint32_t index)
{
    env->exception_index = index;
    cpu_loop_exit(env);
}

void helper_debug(void)
{
    int i;

    qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
    qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
             env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
             env->debug, env->imm, env->iflags);
    qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
             env->btaken, env->btarget,
             (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
             (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
             (env->sregs[SR_MSR] & MSR_EIP),
             (env->sregs[SR_MSR] & MSR_IE));
    for (i = 0; i < 32; i++) {
        qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
        if ((i + 1) % 4 == 0)
            qemu_log("\n");
    }
    qemu_log("\n\n");
}

static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin)
{
    uint32_t cout = 0;

    if ((b == ~0) && cin)
        cout = 1;
    else if ((~0 - a) < (b + cin))
        cout = 1;
    return cout;
}

uint32_t helper_cmp(uint32_t a, uint32_t b)
{
    uint32_t t;

    t = b + ~a + 1;
    if ((b & 0x80000000) ^ (a & 0x80000000))
        t = (t & 0x7fffffff) | (b & 0x80000000);
    return t;
}

uint32_t helper_cmpu(uint32_t a, uint32_t b)
{
    uint32_t t;

    t = b + ~a + 1;
    if ((b & 0x80000000) ^ (a & 0x80000000))
        t = (t & 0x7fffffff) | (a & 0x80000000);
    return t;
}

uint32_t helper_clz(uint32_t t0)
{
    return clz32(t0);
}

uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
{
    uint32_t ncf;
    ncf = compute_carry(a, b, cf);
    return ncf;
}

static inline int div_prepare(uint32_t a, uint32_t b)
{
    if (b == 0) {
        env->sregs[SR_MSR] |= MSR_DZ;

        if ((env->sregs[SR_MSR] & MSR_EE)
            && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
            env->sregs[SR_ESR] = ESR_EC_DIVZERO;
            helper_raise_exception(EXCP_HW_EXCP);
        }
        return 0;
    }
    env->sregs[SR_MSR] &= ~MSR_DZ;
    return 1;
}

uint32_t helper_divs(uint32_t a, uint32_t b)
{
    if (!div_prepare(a, b))
        return 0;
    return (int32_t)a / (int32_t)b;
}

uint32_t helper_divu(uint32_t a, uint32_t b)
{
    if (!div_prepare(a, b))
        return 0;
    return a / b;
}

/* raise FPU exception.  */
static void raise_fpu_exception(void)
{
    env->sregs[SR_ESR] = ESR_EC_FPU;
    helper_raise_exception(EXCP_HW_EXCP);
}

static void update_fpu_flags(int flags)
{
    int raise = 0;

    if (flags & float_flag_invalid) {
        env->sregs[SR_FSR] |= FSR_IO;
        raise = 1;
    }
    if (flags & float_flag_divbyzero) {
        env->sregs[SR_FSR] |= FSR_DZ;
        raise = 1;
    }
    if (flags & float_flag_overflow) {
        env->sregs[SR_FSR] |= FSR_OF;
        raise = 1;
    }
    if (flags & float_flag_underflow) {
        env->sregs[SR_FSR] |= FSR_UF;
        raise = 1;
    }
    if (raise
        && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
        && (env->sregs[SR_MSR] & MSR_EE)) {
        raise_fpu_exception();
    }
}

uint32_t helper_fadd(uint32_t a, uint32_t b)
{
    CPU_FloatU fd, fa, fb;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    fd.f = float32_add(fa.f, fb.f, &env->fp_status);

    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);
    return fd.l;
}

uint32_t helper_frsub(uint32_t a, uint32_t b)
{
    CPU_FloatU fd, fa, fb;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    fd.f = float32_sub(fb.f, fa.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);
    return fd.l;
}

uint32_t helper_fmul(uint32_t a, uint32_t b)
{
    CPU_FloatU fd, fa, fb;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    fd.f = float32_mul(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);

    return fd.l;
}

uint32_t helper_fdiv(uint32_t a, uint32_t b)
{
    CPU_FloatU fd, fa, fb;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    fd.f = float32_div(fb.f, fa.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);

    return fd.l;
}

uint32_t helper_fcmp_un(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    uint32_t r = 0;

    fa.l = a;
    fb.l = b;

    if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
        update_fpu_flags(float_flag_invalid);
        r = 1;
    }

    if (float32_is_quiet_nan(fa.f) || float32_is_quiet_nan(fb.f)) {
        r = 1;
    }

    return r;
}

uint32_t helper_fcmp_lt(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int r;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    r = float32_lt(fb.f, fa.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);

    return r;
}

uint32_t helper_fcmp_eq(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int flags;
    int r;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fb.l = b;
    r = float32_eq_quiet(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);

    return r;
}

uint32_t helper_fcmp_le(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int flags;
    int r;

    fa.l = a;
    fb.l = b;
    set_float_exception_flags(0, &env->fp_status);
    r = float32_le(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);


    return r;
}

uint32_t helper_fcmp_gt(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int flags, r;

    fa.l = a;
    fb.l = b;
    set_float_exception_flags(0, &env->fp_status);
    r = float32_lt(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);
    return r;
}

uint32_t helper_fcmp_ne(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int flags, r;

    fa.l = a;
    fb.l = b;
    set_float_exception_flags(0, &env->fp_status);
    r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);

    return r;
}

uint32_t helper_fcmp_ge(uint32_t a, uint32_t b)
{
    CPU_FloatU fa, fb;
    int flags, r;

    fa.l = a;
    fb.l = b;
    set_float_exception_flags(0, &env->fp_status);
    r = !float32_lt(fa.f, fb.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags & float_flag_invalid);

    return r;
}

uint32_t helper_flt(uint32_t a)
{
    CPU_FloatU fd, fa;

    fa.l = a;
    fd.f = int32_to_float32(fa.l, &env->fp_status);
    return fd.l;
}

uint32_t helper_fint(uint32_t a)
{
    CPU_FloatU fa;
    uint32_t r;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    r = float32_to_int32(fa.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);

    return r;
}

uint32_t helper_fsqrt(uint32_t a)
{
    CPU_FloatU fd, fa;
    int flags;

    set_float_exception_flags(0, &env->fp_status);
    fa.l = a;
    fd.l = float32_sqrt(fa.f, &env->fp_status);
    flags = get_float_exception_flags(&env->fp_status);
    update_fpu_flags(flags);

    return fd.l;
}

uint32_t helper_pcmpbf(uint32_t a, uint32_t b)
{
    unsigned int i;
    uint32_t mask = 0xff000000;

    for (i = 0; i < 4; i++) {
        if ((a & mask) == (b & mask))
            return i + 1;
        mask >>= 8;
    }
    return 0;
}

void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
{
    if (addr & mask) {
            qemu_log_mask(CPU_LOG_INT,
                          "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
                          addr, mask, wr, dr);
            env->sregs[SR_EAR] = addr;
            env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
                                 | (dr & 31) << 5;
            if (mask == 3) {
                env->sregs[SR_ESR] |= 1 << 11;
            }
            if (!(env->sregs[SR_MSR] & MSR_EE)) {
                return;
            }
            helper_raise_exception(EXCP_HW_EXCP);
    }
}

void helper_stackprot(uint32_t addr)
{
    if (addr < env->slr || addr > env->shr) {
            qemu_log("Stack protector violation at %x %x %x\n",
                     addr, env->slr, env->shr);
            env->sregs[SR_EAR] = addr;
            env->sregs[SR_ESR] = ESR_EC_STACKPROT;
            helper_raise_exception(EXCP_HW_EXCP);
    }
}

#if !defined(CONFIG_USER_ONLY)
/* Writes/reads to the MMU's special regs end up here.  */
uint32_t helper_mmu_read(uint32_t rn)
{
    return mmu_read(env, rn);
}

void helper_mmu_write(uint32_t rn, uint32_t v)
{
    mmu_write(env, rn, v);
}

void cpu_unassigned_access(CPUMBState *env1, target_phys_addr_t addr,
                           int is_write, int is_exec, int is_asi, int size)
{
    CPUMBState *saved_env;

    saved_env = env;
    env = env1;

    qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n",
             addr, is_write, is_exec);
    if (!(env->sregs[SR_MSR] & MSR_EE)) {
        env = saved_env;
        return;
    }

    env->sregs[SR_EAR] = addr;
    if (is_exec) {
        if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) {
            env->sregs[SR_ESR] = ESR_EC_INSN_BUS;
            helper_raise_exception(EXCP_HW_EXCP);
        }
    } else {
        if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) {
            env->sregs[SR_ESR] = ESR_EC_DATA_BUS;
            helper_raise_exception(EXCP_HW_EXCP);
        }
    }
    env = saved_env;
}
#endif
Commit	Line	Data
4acb54ba EI	1	/*
	2	* Microblaze helper routines.
	3	*
	4	* Copyright (c) 2009 Edgar E. Iglesias <[email protected]>.
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
8167ee88	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
4acb54ba EI	18	*/
	19
	20	#include <assert.h>
3e457172 BS	21	#include "cpu.h"
3e457172 BS	22	#include "dyngen-exec.h"
4acb54ba EI	23	#include "helper.h"
	24	#include "host-utils.h"
	25
	26	#define D(x)
	27
	28	#if !defined(CONFIG_USER_ONLY)
3e457172 BS	29	#include "softmmu_exec.h"
3e457172 BS	30
4acb54ba EI	31	#define MMUSUFFIX _mmu
	32	#define SHIFT 0
	33	#include "softmmu_template.h"
	34	#define SHIFT 1
	35	#include "softmmu_template.h"
	36	#define SHIFT 2
	37	#include "softmmu_template.h"
	38	#define SHIFT 3
	39	#include "softmmu_template.h"
	40
	41	/* Try to fill the TLB and return an exception if error. If retaddr is
	42	NULL, it means that the function was called in C code (i.e. not
	43	from generated code or from helper.c) */
	44	/* XXX: fix it to restore all registers */
68cee38a	45	void tlb_fill(CPUMBState *env1, target_ulong addr, int is_write, int mmu_idx,
bccd9ec5	46	void *retaddr)
4acb54ba EI	47	{
4acb54ba EI	48	TranslationBlock *tb;
68cee38a	49	CPUMBState *saved_env;
4acb54ba EI	50	unsigned long pc;
	51	int ret;
	52
4acb54ba	53	saved_env = env;
bccd9ec5	54	env = env1;
4acb54ba	55
97b348e7	56	ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx);
4acb54ba EI	57	if (unlikely(ret)) {
	58	if (retaddr) {
	59	/* now we have a real cpu fault */
	60	pc = (unsigned long)retaddr;
	61	tb = tb_find_pc(pc);
	62	if (tb) {
	63	/* the PC is inside the translated code. It means that we have
	64	a virtual CPU fault */
618ba8e6	65	cpu_restore_state(tb, env, pc);
4acb54ba EI	66	}
4acb54ba EI	67	}
1162c041	68	cpu_loop_exit(env);
4acb54ba EI	69	}
	70	env = saved_env;
	71	}
	72	#endif
	73
6d76d23e EI	74	void helper_put(uint32_t id, uint32_t ctrl, uint32_t data)
	75	{
	76	int test = ctrl & STREAM_TEST;
	77	int atomic = ctrl & STREAM_ATOMIC;
	78	int control = ctrl & STREAM_CONTROL;
	79	int nonblock = ctrl & STREAM_NONBLOCK;
	80	int exception = ctrl & STREAM_EXCEPTION;
	81
	82	qemu_log("Unhandled stream put to stream-id=%d data=%x %s%s%s%s%s\n",
	83	id, data,
	84	test ? "t" : "",
	85	nonblock ? "n" : "",
	86	exception ? "e" : "",
	87	control ? "c" : "",
	88	atomic ? "a" : "");
	89	}
	90
	91	uint32_t helper_get(uint32_t id, uint32_t ctrl)
	92	{
	93	int test = ctrl & STREAM_TEST;
	94	int atomic = ctrl & STREAM_ATOMIC;
	95	int control = ctrl & STREAM_CONTROL;
	96	int nonblock = ctrl & STREAM_NONBLOCK;
	97	int exception = ctrl & STREAM_EXCEPTION;
	98
	99	qemu_log("Unhandled stream get from stream-id=%d %s%s%s%s%s\n",
	100	id,
	101	test ? "t" : "",
	102	nonblock ? "n" : "",
	103	exception ? "e" : "",
	104	control ? "c" : "",
	105	atomic ? "a" : "");
	106	return 0xdead0000 \| id;
	107	}
	108
4acb54ba EI	109	void helper_raise_exception(uint32_t index)
	110	{
	111	env->exception_index = index;
1162c041	112	cpu_loop_exit(env);
4acb54ba EI	113	}
	114
	115	void helper_debug(void)
	116	{
	117	int i;
	118
	119	qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
4c24aa0a MS	120	qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
4c24aa0a MS	121	env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
17c52a43 EI	122	env->debug, env->imm, env->iflags);
	123	qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
	124	env->btaken, env->btarget,
	125	(env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
	126	(env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
	127	(env->sregs[SR_MSR] & MSR_EIP),
	128	(env->sregs[SR_MSR] & MSR_IE));
4acb54ba EI	129	for (i = 0; i < 32; i++) {
	130	qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
	131	if ((i + 1) % 4 == 0)
	132	qemu_log("\n");
	133	}
	134	qemu_log("\n\n");
	135	}
	136
	137	static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin)
	138	{
	139	uint32_t cout = 0;
	140
	141	if ((b == ~0) && cin)
	142	cout = 1;
	143	else if ((~0 - a) < (b + cin))
	144	cout = 1;
	145	return cout;
	146	}
	147
	148	uint32_t helper_cmp(uint32_t a, uint32_t b)
	149	{
	150	uint32_t t;
	151
	152	t = b + ~a + 1;
	153	if ((b & 0x80000000) ^ (a & 0x80000000))
	154	t = (t & 0x7fffffff) \| (b & 0x80000000);
	155	return t;
	156	}
	157
	158	uint32_t helper_cmpu(uint32_t a, uint32_t b)
	159	{
	160	uint32_t t;
	161
	162	t = b + ~a + 1;
	163	if ((b & 0x80000000) ^ (a & 0x80000000))
	164	t = (t & 0x7fffffff) \| (a & 0x80000000);
	165	return t;
	166	}
	167
48b5e96f EI	168	uint32_t helper_clz(uint32_t t0)
	169	{
	170	return clz32(t0);
	171	}
	172
5d0bb823	173	uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
4acb54ba	174	{
5d0bb823	175	uint32_t ncf;
40cbf5b7 EI	176	ncf = compute_carry(a, b, cf);
40cbf5b7 EI	177	return ncf;
4acb54ba EI	178	}
4acb54ba EI	179
4acb54ba EI	180	static inline int div_prepare(uint32_t a, uint32_t b)
	181	{
	182	if (b == 0) {
	183	env->sregs[SR_MSR] \|= MSR_DZ;
821ebb33 EI	184
	185	if ((env->sregs[SR_MSR] & MSR_EE)
	186	&& !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
	187	env->sregs[SR_ESR] = ESR_EC_DIVZERO;
	188	helper_raise_exception(EXCP_HW_EXCP);
	189	}
4acb54ba EI	190	return 0;
	191	}
	192	env->sregs[SR_MSR] &= ~MSR_DZ;
	193	return 1;
	194	}
	195
	196	uint32_t helper_divs(uint32_t a, uint32_t b)
	197	{
	198	if (!div_prepare(a, b))
	199	return 0;
	200	return (int32_t)a / (int32_t)b;
	201	}
	202
	203	uint32_t helper_divu(uint32_t a, uint32_t b)
	204	{
	205	if (!div_prepare(a, b))
	206	return 0;
	207	return a / b;
	208	}
	209
97694c57 EI	210	/* raise FPU exception. */
	211	static void raise_fpu_exception(void)
	212	{
	213	env->sregs[SR_ESR] = ESR_EC_FPU;
	214	helper_raise_exception(EXCP_HW_EXCP);
	215	}
	216
	217	static void update_fpu_flags(int flags)
	218	{
	219	int raise = 0;
	220
	221	if (flags & float_flag_invalid) {
	222	env->sregs[SR_FSR] \|= FSR_IO;
	223	raise = 1;
	224	}
	225	if (flags & float_flag_divbyzero) {
	226	env->sregs[SR_FSR] \|= FSR_DZ;
	227	raise = 1;
	228	}
	229	if (flags & float_flag_overflow) {
	230	env->sregs[SR_FSR] \|= FSR_OF;
	231	raise = 1;
	232	}
	233	if (flags & float_flag_underflow) {
	234	env->sregs[SR_FSR] \|= FSR_UF;
	235	raise = 1;
	236	}
	237	if (raise
	238	&& (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
	239	&& (env->sregs[SR_MSR] & MSR_EE)) {
	240	raise_fpu_exception();
	241	}
	242	}
	243
	244	uint32_t helper_fadd(uint32_t a, uint32_t b)
	245	{
	246	CPU_FloatU fd, fa, fb;
	247	int flags;
	248
	249	set_float_exception_flags(0, &env->fp_status);
	250	fa.l = a;
	251	fb.l = b;
	252	fd.f = float32_add(fa.f, fb.f, &env->fp_status);
	253
	254	flags = get_float_exception_flags(&env->fp_status);
	255	update_fpu_flags(flags);
	256	return fd.l;
	257	}
	258
	259	uint32_t helper_frsub(uint32_t a, uint32_t b)
	260	{
	261	CPU_FloatU fd, fa, fb;
	262	int flags;
	263
	264	set_float_exception_flags(0, &env->fp_status);
	265	fa.l = a;
	266	fb.l = b;
	267	fd.f = float32_sub(fb.f, fa.f, &env->fp_status);
	268	flags = get_float_exception_flags(&env->fp_status);
	269	update_fpu_flags(flags);
	270	return fd.l;
	271	}
	272
	273	uint32_t helper_fmul(uint32_t a, uint32_t b)
274	{
275	CPU_FloatU fd, fa, fb;
276	int flags;
277
278	set_float_exception_flags(0, &env->fp_status);
279	fa.l = a;
280	fb.l = b;
281	fd.f = float32_mul(fa.f, fb.f, &env->fp_status);
282	flags = get_float_exception_flags(&env->fp_status);
283	update_fpu_flags(flags);
284
285	return fd.l;
286	}
287
288	uint32_t helper_fdiv(uint32_t a, uint32_t b)
289	{
290	CPU_FloatU fd, fa, fb;
291	int flags;
292
293	set_float_exception_flags(0, &env->fp_status);
294	fa.l = a;
295	fb.l = b;
296	fd.f = float32_div(fb.f, fa.f, &env->fp_status);
297	flags = get_float_exception_flags(&env->fp_status);
298	update_fpu_flags(flags);
299
300	return fd.l;
301	}
302
303	uint32_t helper_fcmp_un(uint32_t a, uint32_t b)
304	{
ef9d48da EI	305	CPU_FloatU fa, fb;
	306	uint32_t r = 0;
	307
	308	fa.l = a;
	309	fb.l = b;
	310
	311	if (float32_is_signaling_nan(fa.f) \|\| float32_is_signaling_nan(fb.f)) {
	312	update_fpu_flags(float_flag_invalid);
	313	r = 1;
	314	}
	315
18569871	316	if (float32_is_quiet_nan(fa.f) \|\| float32_is_quiet_nan(fb.f)) {
ef9d48da EI	317	r = 1;
	318	}
	319
	320	return r;
97694c57 EI	321	}
	322
	323	uint32_t helper_fcmp_lt(uint32_t a, uint32_t b)
	324	{
	325	CPU_FloatU fa, fb;
	326	int r;
	327	int flags;
	328
	329	set_float_exception_flags(0, &env->fp_status);
	330	fa.l = a;
	331	fb.l = b;
	332	r = float32_lt(fb.f, fa.f, &env->fp_status);
	333	flags = get_float_exception_flags(&env->fp_status);
	334	update_fpu_flags(flags & float_flag_invalid);
	335
	336	return r;
	337	}
	338
	339	uint32_t helper_fcmp_eq(uint32_t a, uint32_t b)
	340	{
	341	CPU_FloatU fa, fb;
	342	int flags;
	343	int r;
	344
	345	set_float_exception_flags(0, &env->fp_status);
	346	fa.l = a;
	347	fb.l = b;
211315fb	348	r = float32_eq_quiet(fa.f, fb.f, &env->fp_status);
97694c57 EI	349	flags = get_float_exception_flags(&env->fp_status);
	350	update_fpu_flags(flags & float_flag_invalid);
	351
	352	return r;
	353	}
	354
	355	uint32_t helper_fcmp_le(uint32_t a, uint32_t b)
	356	{
	357	CPU_FloatU fa, fb;
	358	int flags;
	359	int r;
	360
	361	fa.l = a;
	362	fb.l = b;
	363	set_float_exception_flags(0, &env->fp_status);
	364	r = float32_le(fa.f, fb.f, &env->fp_status);
	365	flags = get_float_exception_flags(&env->fp_status);
	366	update_fpu_flags(flags & float_flag_invalid);
	367
	368
	369	return r;
	370	}
	371
	372	uint32_t helper_fcmp_gt(uint32_t a, uint32_t b)
	373	{
	374	CPU_FloatU fa, fb;
	375	int flags, r;
	376
	377	fa.l = a;
	378	fb.l = b;
	379	set_float_exception_flags(0, &env->fp_status);
	380	r = float32_lt(fa.f, fb.f, &env->fp_status);
	381	flags = get_float_exception_flags(&env->fp_status);
	382	update_fpu_flags(flags & float_flag_invalid);
	383	return r;
	384	}
	385
	386	uint32_t helper_fcmp_ne(uint32_t a, uint32_t b)
	387	{
	388	CPU_FloatU fa, fb;
	389	int flags, r;
	390
	391	fa.l = a;
	392	fb.l = b;
	393	set_float_exception_flags(0, &env->fp_status);
211315fb	394	r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status);
97694c57 EI	395	flags = get_float_exception_flags(&env->fp_status);
	396	update_fpu_flags(flags & float_flag_invalid);
	397
	398	return r;
	399	}
	400
	401	uint32_t helper_fcmp_ge(uint32_t a, uint32_t b)
	402	{
	403	CPU_FloatU fa, fb;
	404	int flags, r;
	405
	406	fa.l = a;
	407	fb.l = b;
	408	set_float_exception_flags(0, &env->fp_status);
	409	r = !float32_lt(fa.f, fb.f, &env->fp_status);
	410	flags = get_float_exception_flags(&env->fp_status);
	411	update_fpu_flags(flags & float_flag_invalid);
	412
	413	return r;
	414	}
	415
	416	uint32_t helper_flt(uint32_t a)
	417	{
	418	CPU_FloatU fd, fa;
	419
	420	fa.l = a;
	421	fd.f = int32_to_float32(fa.l, &env->fp_status);
	422	return fd.l;
	423	}
	424
	425	uint32_t helper_fint(uint32_t a)
	426	{
	427	CPU_FloatU fa;
	428	uint32_t r;
	429	int flags;
	430
	431	set_float_exception_flags(0, &env->fp_status);
	432	fa.l = a;
	433	r = float32_to_int32(fa.f, &env->fp_status);
	434	flags = get_float_exception_flags(&env->fp_status);
	435	update_fpu_flags(flags);
	436
	437	return r;
	438	}
	439
	440	uint32_t helper_fsqrt(uint32_t a)
	441	{
	442	CPU_FloatU fd, fa;
	443	int flags;
	444
	445	set_float_exception_flags(0, &env->fp_status);
	446	fa.l = a;
	447	fd.l = float32_sqrt(fa.f, &env->fp_status);
	448	flags = get_float_exception_flags(&env->fp_status);
	449	update_fpu_flags(flags);
	450
	451	return fd.l;
	452	}
	453
4acb54ba EI	454	uint32_t helper_pcmpbf(uint32_t a, uint32_t b)
	455	{
	456	unsigned int i;
	457	uint32_t mask = 0xff000000;
	458
	459	for (i = 0; i < 4; i++) {
	460	if ((a & mask) == (b & mask))
	461	return i + 1;
	462	mask >>= 8;
	463	}
	464	return 0;
	465	}
	466
3aa80988	467	void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
968a40f6	468	{
968a40f6	469	if (addr & mask) {
97f90cbf EI	470	qemu_log_mask(CPU_LOG_INT,
	471	"unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
	472	addr, mask, wr, dr);
	473	env->sregs[SR_EAR] = addr;
968a40f6 EI	474	env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA \| (wr << 10) \
968a40f6 EI	475	\| (dr & 31) << 5;
3aa80988	476	if (mask == 3) {
968a40f6 EI	477	env->sregs[SR_ESR] \|= 1 << 11;
968a40f6 EI	478	}
97f90cbf EI	479	if (!(env->sregs[SR_MSR] & MSR_EE)) {
	480	return;
	481	}
968a40f6 EI	482	helper_raise_exception(EXCP_HW_EXCP);
	483	}
	484	}
	485
5818dee5 EI	486	void helper_stackprot(uint32_t addr)
	487	{
	488	if (addr < env->slr \|\| addr > env->shr) {
	489	qemu_log("Stack protector violation at %x %x %x\n",
	490	addr, env->slr, env->shr);
	491	env->sregs[SR_EAR] = addr;
	492	env->sregs[SR_ESR] = ESR_EC_STACKPROT;
	493	helper_raise_exception(EXCP_HW_EXCP);
	494	}
	495	}
	496
4acb54ba EI	497	#if !defined(CONFIG_USER_ONLY)
	498	/* Writes/reads to the MMU's special regs end up here. */
	499	uint32_t helper_mmu_read(uint32_t rn)
	500	{
	501	return mmu_read(env, rn);
	502	}
	503
	504	void helper_mmu_write(uint32_t rn, uint32_t v)
	505	{
	506	mmu_write(env, rn, v);
	507	}
faed1c2a	508
68cee38a	509	void cpu_unassigned_access(CPUMBState *env1, target_phys_addr_t addr,
b14ef7c9	510	int is_write, int is_exec, int is_asi, int size)
faed1c2a	511	{
68cee38a	512	CPUMBState *saved_env;
e1aa3254	513
faed1c2a	514	saved_env = env;
b14ef7c9 BS	515	env = env1;
b14ef7c9 BS	516
97f90cbf	517	qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n",
faed1c2a EI	518	addr, is_write, is_exec);
faed1c2a EI	519	if (!(env->sregs[SR_MSR] & MSR_EE)) {
95b279de	520	env = saved_env;
faed1c2a EI	521	return;
	522	}
	523
97f90cbf	524	env->sregs[SR_EAR] = addr;
faed1c2a	525	if (is_exec) {
97f90cbf	526	if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) {
faed1c2a EI	527	env->sregs[SR_ESR] = ESR_EC_INSN_BUS;
	528	helper_raise_exception(EXCP_HW_EXCP);
	529	}
	530	} else {
97f90cbf	531	if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) {
faed1c2a EI	532	env->sregs[SR_ESR] = ESR_EC_DATA_BUS;
	533	helper_raise_exception(EXCP_HW_EXCP);
	534	}
	535	}
95b279de	536	env = saved_env;
faed1c2a	537	}
3c7b48b7	538	#endif