[qemu.git] / ops_template.h


#define DATA_BITS (1 << (3 + SHIFT))
#define SHIFT_MASK (DATA_BITS - 1)
#define SIGN_MASK (1 << (DATA_BITS - 1))

#if DATA_BITS == 8
#define SUFFIX b
#define DATA_TYPE uint8_t
#define DATA_STYPE int8_t
#define DATA_MASK 0xff
#elif DATA_BITS == 16
#define SUFFIX w
#define DATA_TYPE uint16_t
#define DATA_STYPE int16_t
#define DATA_MASK 0xffff
#elif DATA_BITS == 32
#define SUFFIX l
#define DATA_TYPE uint32_t
#define DATA_STYPE int32_t
#define DATA_MASK 0xffffffff
#else
#error unhandled operand size
#endif

/* dynamic flags computation */

static int glue(compute_all_add, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_DST - CC_SRC;
    cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
    pf = parity_table[(uint8_t)CC_DST];
    af = (CC_DST ^ src1 ^ src2) & 0x10;
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_c_add, SUFFIX)(void)
{
    int src1, cf;
    src1 = CC_SRC;
    cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
    return cf;
}

static int glue(compute_all_sub, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;
    cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
    pf = parity_table[(uint8_t)CC_DST];
    af = (CC_DST ^ src1 ^ src2) & 0x10;
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_c_sub, SUFFIX)(void)
{
    int src1, src2, cf;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;
    cf = (DATA_TYPE)src1 < (DATA_TYPE)src1;
    return cf;
}

static int glue(compute_all_logic, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    cf = 0;
    pf = parity_table[(uint8_t)CC_DST];
    af = 0;
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = 0;
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_c_logic, SUFFIX)(void)
{
    return 0;
}

static int glue(compute_all_inc, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    int src1, src2;
    src1 = CC_DST - 1;
    src2 = 1;
    cf = CC_SRC;
    pf = parity_table[(uint8_t)CC_DST];
    af = (CC_DST ^ src1 ^ src2) & 0x10;
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_c_inc, SUFFIX)(void)
{
    return CC_SRC;
}

static int glue(compute_all_dec, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    int src1, src2;
    src1 = CC_DST + 1;
    src2 = 1;
    cf = CC_SRC;
    pf = parity_table[(uint8_t)CC_DST];
    af = (CC_DST ^ src1 ^ src2) & 0x10;
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_all_shl, SUFFIX)(void)
{
    int cf, pf, af, zf, sf, of;
    cf = CC_SRC & 1;
    pf = parity_table[(uint8_t)CC_DST];
    af = 0; /* undefined */
    zf = ((DATA_TYPE)CC_DST != 0) << 6;
    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
    of = sf << 4; /* only meaniful for shr with count == 1 */
    return cf | pf | af | zf | sf | of;
}

static int glue(compute_c_shl, SUFFIX)(void)
{
    return CC_SRC & 1;
}

/* various optimized jumps cases */

void OPPROTO glue(op_jb_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    if ((DATA_TYPE)src1 < (DATA_TYPE)src2)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

void OPPROTO glue(op_jz_sub, SUFFIX)(void)
{
    if ((DATA_TYPE)CC_DST != 0)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

void OPPROTO glue(op_jbe_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    if ((DATA_TYPE)src1 <= (DATA_TYPE)src2)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

void OPPROTO glue(op_js_sub, SUFFIX)(void)
{
    if (CC_DST & SIGN_MASK)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

void OPPROTO glue(op_jl_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    if ((DATA_STYPE)src1 < (DATA_STYPE)src2)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

void OPPROTO glue(op_jle_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    if ((DATA_STYPE)src1 <= (DATA_STYPE)src2)
        PC += PARAM1;
    else
        PC += PARAM2;
    FORCE_RET();
}

/* various optimized set cases */

void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2);
}

void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void)
{
    T0 = ((DATA_TYPE)CC_DST != 0);
}

void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2);
}

void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void)
{
    T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1;
}

void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2);
}

void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void)
{
    int src1, src2;
    src1 = CC_SRC;
    src2 = CC_SRC - CC_DST;

    T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2);
}

/* shifts */

void OPPROTO glue(glue(op_rol, SUFFIX), _T0_T1_cc)(void)
{
    int count, src;
    count = T1 & SHIFT_MASK;
    if (count) {
        CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O | CC_C);
        src = T0;
        T0 &= DATA_MASK;
        T0 = (T0 << count) | (T0 >> (DATA_BITS - count));
        CC_SRC |= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | 
            (T0 & CC_C);
        CC_OP = CC_OP_EFLAGS;
    }
}

void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1_cc)(void)
{
    int count, src;
    count = T1 & SHIFT_MASK;
    if (count) {
        CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O | CC_C);
        src = T0;
        T0 &= DATA_MASK;
        T0 = (T0 >> count) | (T0 << (DATA_BITS - count));
        CC_SRC |= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | 
            ((T0 >> (DATA_BITS - 1)) & CC_C);
        CC_OP = CC_OP_EFLAGS;
    }
}

void OPPROTO glue(glue(op_rcl, SUFFIX), _T0_T1_cc)(void)
{
    int count, res, eflags;
    unsigned int src;

    count = T1 & 0x1f;
#if DATA_BITS == 16
    count = rclw_table[count];
#elif DATA_BITS == 8
    count = rclb_table[count];
#endif
    if (count) {
        eflags = cc_table[CC_OP].compute_all();
        src = T0;
        res = (T0 << count) | ((eflags & CC_C) << (count - 1));
        if (count > 1)
            res |= T0 >> (DATA_BITS + 1 - count);
        T0 = res;
        CC_SRC = (eflags & ~(CC_C | CC_O)) |
            (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | 
            ((src >> (DATA_BITS - count)) & CC_C);
        CC_OP = CC_OP_EFLAGS;
    }
}

void OPPROTO glue(glue(op_rcr, SUFFIX), _T0_T1_cc)(void)
{
    int count, res, eflags;
    unsigned int src;

    count = T1 & 0x1f;
#if DATA_BITS == 16
    count = rclw_table[count];
#elif DATA_BITS == 8
    count = rclb_table[count];
#endif
    if (count) {
        eflags = cc_table[CC_OP].compute_all();
        src = T0;
        res = (T0 >> count) | ((eflags & CC_C) << (DATA_BITS - count));
        if (count > 1)
            res |= T0 << (DATA_BITS + 1 - count);
        T0 = res;
        CC_SRC = (eflags & ~(CC_C | CC_O)) |
            (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | 
            ((src >> (count - 1)) & CC_C);
        CC_OP = CC_OP_EFLAGS;
    }
}

void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1_cc)(void)
{
    int count;
    count = T1 & 0x1f;
    if (count == 1) {
        CC_SRC = T0;
        T0 = T0 << 1;
        CC_DST = T0;
        CC_OP = CC_OP_ADDB + SHIFT;
    } else if (count) {
        CC_SRC = T0 >> (DATA_BITS - count);
        T0 = T0 << count;
        CC_DST = T0;
        CC_OP = CC_OP_SHLB + SHIFT;
    }
}

void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1_cc)(void)
{
    int count;
    count = T1 & 0x1f;
    if (count) {
        T0 &= DATA_MASK;
        CC_SRC = T0 >> (count - 1);
        T0 = T0 >> count;
        CC_DST = T0;
        CC_OP = CC_OP_SHLB + SHIFT;
    }
}

void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1_cc)(void)
{
    int count, src;
    count = T1 & 0x1f;
    if (count) {
        src = (DATA_STYPE)T0;
        CC_SRC =  src >> (count - 1);
        T0 = src >> count;
        CC_DST = T0;
        CC_OP = CC_OP_SHLB + SHIFT;
    }
}

/* string operations */
/* XXX: maybe use lower level instructions to ease exception handling */

void OPPROTO glue(op_movs, SUFFIX)(void)
{
    int v;
    v = glue(ldu, SUFFIX)((void *)ESI);
    glue(st, SUFFIX)((void *)EDI, v);
    ESI += (DF << SHIFT);
    EDI += (DF << SHIFT);
}

void OPPROTO glue(op_rep_movs, SUFFIX)(void)
{
    int v, inc;
    inc = (DF << SHIFT);
    while (ECX != 0) {
        v = glue(ldu, SUFFIX)((void *)ESI);
        glue(st, SUFFIX)((void *)EDI, v);
        ESI += inc;
        EDI += inc;
        ECX--;
    }
}

void OPPROTO glue(op_stos, SUFFIX)(void)
{
    glue(st, SUFFIX)((void *)EDI, EAX);
    EDI += (DF << SHIFT);
}

void OPPROTO glue(op_rep_stos, SUFFIX)(void)
{
    int inc;
    inc = (DF << SHIFT);
    while (ECX != 0) {
        glue(st, SUFFIX)((void *)EDI, EAX);
        EDI += inc;
        ECX--;
    }
}

void OPPROTO glue(op_lods, SUFFIX)(void)
{
    int v;
    v = glue(ldu, SUFFIX)((void *)ESI);
#if SHIFT == 0
    EAX = (EAX & ~0xff) | v;
#elif SHIFT == 1
    EAX = (EAX & ~0xffff) | v;
#else
    EAX = v;
#endif
    ESI += (DF << SHIFT);
}

/* don't know if it is used */
void OPPROTO glue(op_rep_lods, SUFFIX)(void)
{
    int v, inc;
    inc = (DF << SHIFT);
    while (ECX != 0) {
        v = glue(ldu, SUFFIX)((void *)ESI);
#if SHIFT == 0
        EAX = (EAX & ~0xff) | v;
#elif SHIFT == 1
        EAX = (EAX & ~0xffff) | v;
#else
        EAX = v;
#endif
        ESI += inc;
        ECX--;
    }
}

void OPPROTO glue(op_scas, SUFFIX)(void)
{
    int v;

    v = glue(ldu, SUFFIX)((void *)ESI);
    ESI += (DF << SHIFT);
    CC_SRC = EAX;
    CC_DST = EAX - v;
}

void OPPROTO glue(op_repz_scas, SUFFIX)(void)
{
    int v1, v2, inc;

    if (ECX != 0) {
        /* NOTE: the flags are not modified if ECX == 0 */
#if SHIFT == 0
        v1 = EAX & 0xff;
#elif SHIFT == 1
        v1 = EAX & 0xffff;
#else
        v1 = EAX;
#endif
        inc = (DF << SHIFT);
        do {
            v2 = glue(ldu, SUFFIX)((void *)ESI);
            if (v1 != v2)
                break;
            ESI += inc;
            ECX--;
        } while (ECX != 0);
        CC_SRC = v1;
        CC_DST = v1 - v2;
        CC_OP = CC_OP_SUBB + SHIFT;
    }
}

void OPPROTO glue(op_repnz_scas, SUFFIX)(void)
{
    int v1, v2, inc;

    if (ECX != 0) {
        /* NOTE: the flags are not modified if ECX == 0 */
#if SHIFT == 0
        v1 = EAX & 0xff;
#elif SHIFT == 1
        v1 = EAX & 0xffff;
#else
        v1 = EAX;
#endif
        inc = (DF << SHIFT);
        do {
            v2 = glue(ldu, SUFFIX)((void *)ESI);
            if (v1 == v2)
                break;
            ESI += inc;
            ECX--;
        } while (ECX != 0);
        CC_SRC = v1;
        CC_DST = v1 - v2;
        CC_OP = CC_OP_SUBB + SHIFT;
    }
}

void OPPROTO glue(op_cmps, SUFFIX)(void)
{
    int v1, v2;
    v1 = glue(ldu, SUFFIX)((void *)ESI);
    v2 = glue(ldu, SUFFIX)((void *)EDI);
    ESI += (DF << SHIFT);
    EDI += (DF << SHIFT);
    CC_SRC = v1;
    CC_DST = v1 - v2;
}

void OPPROTO glue(op_repz_cmps, SUFFIX)(void)
{
    int v1, v2, inc;
    if (ECX != 0) {
        inc = (DF << SHIFT);
        do {
            v1 = glue(ldu, SUFFIX)((void *)ESI);
            v2 = glue(ldu, SUFFIX)((void *)EDI);
            if (v1 != v2)
                break;
            ESI += inc;
            EDI += inc;
            ECX--;
        } while (ECX != 0);
        CC_SRC = v1;
        CC_DST = v1 - v2;
        CC_OP = CC_OP_SUBB + SHIFT;
    }
}

void OPPROTO glue(op_repnz_cmps, SUFFIX)(void)
{
    int v1, v2, inc;
    if (ECX != 0) {
        inc = (DF << SHIFT);
        do {
            v1 = glue(ldu, SUFFIX)((void *)ESI);
            v2 = glue(ldu, SUFFIX)((void *)EDI);
            if (v1 == v2)
                break;
            ESI += inc;
            EDI += inc;
            ECX--;
        } while (ECX != 0);
        CC_SRC = v1;
        CC_DST = v1 - v2;
        CC_OP = CC_OP_SUBB + SHIFT;
    }
}

void OPPROTO glue(op_outs, SUFFIX)(void)
{
    int v, dx;
    dx = EDX & 0xffff;
    v = glue(ldu, SUFFIX)((void *)ESI);
    glue(port_out, SUFFIX)(dx, v);
    ESI += (DF << SHIFT);
}

void OPPROTO glue(op_rep_outs, SUFFIX)(void)
{
    int v, dx, inc;
    inc = (DF << SHIFT);
    dx = EDX & 0xffff;
    while (ECX != 0) {
        v = glue(ldu, SUFFIX)((void *)ESI);
        glue(port_out, SUFFIX)(dx, v);
        ESI += inc;
        ECX--;
    }
}

void OPPROTO glue(op_ins, SUFFIX)(void)
{
    int v, dx;
    dx = EDX & 0xffff;
    v = glue(port_in, SUFFIX)(dx);
    glue(st, SUFFIX)((void *)EDI, v);
    EDI += (DF << SHIFT);
}

void OPPROTO glue(op_rep_ins, SUFFIX)(void)
{
    int v, dx, inc;
    inc = (DF << SHIFT);
    dx = EDX & 0xffff;
    while (ECX != 0) {
        v = glue(port_in, SUFFIX)(dx);
        glue(st, SUFFIX)((void *)EDI, v);
        EDI += (DF << SHIFT);
        ECX--;
    }
}

#undef DATA_BITS
#undef SHIFT_MASK
#undef SIGN_MASK
#undef DATA_TYPE
#undef DATA_STYPE
#undef DATA_MASK
#undef SUFFIX
Commit	Line	Data
367e86e8 FB	1
	2	#define DATA_BITS (1 << (3 + SHIFT))
	3	#define SHIFT_MASK (DATA_BITS - 1)
	4	#define SIGN_MASK (1 << (DATA_BITS - 1))
	5
	6	#if DATA_BITS == 8
	7	#define SUFFIX b
	8	#define DATA_TYPE uint8_t
	9	#define DATA_STYPE int8_t
	10	#define DATA_MASK 0xff
	11	#elif DATA_BITS == 16
	12	#define SUFFIX w
	13	#define DATA_TYPE uint16_t
	14	#define DATA_STYPE int16_t
	15	#define DATA_MASK 0xffff
	16	#elif DATA_BITS == 32
	17	#define SUFFIX l
	18	#define DATA_TYPE uint32_t
	19	#define DATA_STYPE int32_t
	20	#define DATA_MASK 0xffffffff
	21	#else
	22	#error unhandled operand size
	23	#endif
	24
	25	/* dynamic flags computation */
	26
	27	static int glue(compute_all_add, SUFFIX)(void)
	28	{
	29	int cf, pf, af, zf, sf, of;
	30	int src1, src2;
	31	src1 = CC_SRC;
	32	src2 = CC_DST - CC_SRC;
	33	cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
	34	pf = parity_table[(uint8_t)CC_DST];
	35	af = (CC_DST ^ src1 ^ src2) & 0x10;
	36	zf = ((DATA_TYPE)CC_DST != 0) << 6;
	37	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
	38	of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
	39	return cf \| pf \| af \| zf \| sf \| of;
	40	}
	41
	42	static int glue(compute_c_add, SUFFIX)(void)
	43	{
	44	int src1, cf;
	45	src1 = CC_SRC;
	46	cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
	47	return cf;
	48	}
	49
	50	static int glue(compute_all_sub, SUFFIX)(void)
	51	{
	52	int cf, pf, af, zf, sf, of;
	53	int src1, src2;
	54	src1 = CC_SRC;
	55	src2 = CC_SRC - CC_DST;
	56	cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
	57	pf = parity_table[(uint8_t)CC_DST];
	58	af = (CC_DST ^ src1 ^ src2) & 0x10;
	59	zf = ((DATA_TYPE)CC_DST != 0) << 6;
	60	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
	61	of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
	62	return cf \| pf \| af \| zf \| sf \| of;
	63	}
	64
65	static int glue(compute_c_sub, SUFFIX)(void)
66	{
67	int src1, src2, cf;
68	src1 = CC_SRC;
69	src2 = CC_SRC - CC_DST;
70	cf = (DATA_TYPE)src1 < (DATA_TYPE)src1;
71	return cf;
72	}
73
74	static int glue(compute_all_logic, SUFFIX)(void)
75	{
76	int cf, pf, af, zf, sf, of;
77	cf = 0;
78	pf = parity_table[(uint8_t)CC_DST];
79	af = 0;
80	zf = ((DATA_TYPE)CC_DST != 0) << 6;
81	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
82	of = 0;
83	return cf \| pf \| af \| zf \| sf \| of;
84	}
85
86	static int glue(compute_c_logic, SUFFIX)(void)
87	{
88	return 0;
89	}
90
91	static int glue(compute_all_inc, SUFFIX)(void)
92	{
93	int cf, pf, af, zf, sf, of;
94	int src1, src2;
95	src1 = CC_DST - 1;
96	src2 = 1;
97	cf = CC_SRC;
98	pf = parity_table[(uint8_t)CC_DST];
99	af = (CC_DST ^ src1 ^ src2) & 0x10;
100	zf = ((DATA_TYPE)CC_DST != 0) << 6;
101	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
102	of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
103	return cf \| pf \| af \| zf \| sf \| of;
104	}
105
106	static int glue(compute_c_inc, SUFFIX)(void)
107	{
108	return CC_SRC;
109	}
110
111	static int glue(compute_all_dec, SUFFIX)(void)
112	{
113	int cf, pf, af, zf, sf, of;
114	int src1, src2;
115	src1 = CC_DST + 1;
116	src2 = 1;
117	cf = CC_SRC;
118	pf = parity_table[(uint8_t)CC_DST];
119	af = (CC_DST ^ src1 ^ src2) & 0x10;
120	zf = ((DATA_TYPE)CC_DST != 0) << 6;
121	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
122	of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
123	return cf \| pf \| af \| zf \| sf \| of;
124	}
125
126	static int glue(compute_all_shl, SUFFIX)(void)
127	{
128	int cf, pf, af, zf, sf, of;
129	cf = CC_SRC & 1;
130	pf = parity_table[(uint8_t)CC_DST];
131	af = 0; /* undefined */
132	zf = ((DATA_TYPE)CC_DST != 0) << 6;
133	sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
134	of = sf << 4; /* only meaniful for shr with count == 1 */
135	return cf \| pf \| af \| zf \| sf \| of;
136	}
137
138	static int glue(compute_c_shl, SUFFIX)(void)
139	{
140	return CC_SRC & 1;
141	}
142
143	/* various optimized jumps cases */
144
145	void OPPROTO glue(op_jb_sub, SUFFIX)(void)
146	{
147	int src1, src2;
148	src1 = CC_SRC;
149	src2 = CC_SRC - CC_DST;
150
151	if ((DATA_TYPE)src1 < (DATA_TYPE)src2)
152	PC += PARAM1;
153	else
154	PC += PARAM2;
155	FORCE_RET();
156	}
157
158	void OPPROTO glue(op_jz_sub, SUFFIX)(void)
159	{
160	if ((DATA_TYPE)CC_DST != 0)
161	PC += PARAM1;
162	else
163	PC += PARAM2;
164	FORCE_RET();
165	}
166
167	void OPPROTO glue(op_jbe_sub, SUFFIX)(void)
168	{
169	int src1, src2;
170	src1 = CC_SRC;
171	src2 = CC_SRC - CC_DST;
172
173	if ((DATA_TYPE)src1 <= (DATA_TYPE)src2)
174	PC += PARAM1;
175	else
176	PC += PARAM2;
177	FORCE_RET();
178	}
179
180	void OPPROTO glue(op_js_sub, SUFFIX)(void)
181	{
182	if (CC_DST & SIGN_MASK)
183	PC += PARAM1;
184	else
185	PC += PARAM2;
186	FORCE_RET();
187	}
188
189	void OPPROTO glue(op_jl_sub, SUFFIX)(void)
190	{
191	int src1, src2;
192	src1 = CC_SRC;
193	src2 = CC_SRC - CC_DST;
194
195	if ((DATA_STYPE)src1 < (DATA_STYPE)src2)
196	PC += PARAM1;
197	else
198	PC += PARAM2;
199	FORCE_RET();
200	}
201
202	void OPPROTO glue(op_jle_sub, SUFFIX)(void)
203	{
204	int src1, src2;
205	src1 = CC_SRC;
206	src2 = CC_SRC - CC_DST;
207
208	if ((DATA_STYPE)src1 <= (DATA_STYPE)src2)
209	PC += PARAM1;
210	else
211	PC += PARAM2;
212	FORCE_RET();
213	}
214
215	/* various optimized set cases */
216
217	void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void)
218	{
219	int src1, src2;
220	src1 = CC_SRC;
221	src2 = CC_SRC - CC_DST;
222
223	T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2);
224	}
225
226	void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void)
227	{
228	T0 = ((DATA_TYPE)CC_DST != 0);
229	}
230
231	void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void)
232	{
233	int src1, src2;
234	src1 = CC_SRC;
235	src2 = CC_SRC - CC_DST;
236
237	T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2);
238	}
239
240	void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void)
241	{
242	T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1;
243	}
244
245	void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void)
246	{
247	int src1, src2;
248	src1 = CC_SRC;
249	src2 = CC_SRC - CC_DST;
250
251	T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2);
252	}
253
254	void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void)
255	{
256	int src1, src2;
257	src1 = CC_SRC;
258	src2 = CC_SRC - CC_DST;
259
260	T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2);
261	}
262
263	/* shifts */
264
265	void OPPROTO glue(glue(op_rol, SUFFIX), _T0_T1_cc)(void)
266	{
267	int count, src;
268	count = T1 & SHIFT_MASK;
269	if (count) {
270	CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O \| CC_C);
271	src = T0;
272	T0 &= DATA_MASK;
273	T0 = (T0 << count) \| (T0 >> (DATA_BITS - count));
274	CC_SRC \|= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) \|
275	(T0 & CC_C);
276	CC_OP = CC_OP_EFLAGS;
277	}
278	}
279
280	void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1_cc)(void)
281	{
282	int count, src;
283	count = T1 & SHIFT_MASK;
284	if (count) {
285	CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O \| CC_C);
286	src = T0;
287	T0 &= DATA_MASK;
288	T0 = (T0 >> count) \| (T0 << (DATA_BITS - count));
289	CC_SRC \|= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) \|
290	((T0 >> (DATA_BITS - 1)) & CC_C);
291	CC_OP = CC_OP_EFLAGS;
292	}
293	}
294
295	void OPPROTO glue(glue(op_rcl, SUFFIX), _T0_T1_cc)(void)
296	{
297	int count, res, eflags;
298	unsigned int src;
299
300	count = T1 & 0x1f;
301	#if DATA_BITS == 16
302	count = rclw_table[count];
303	#elif DATA_BITS == 8
304	count = rclb_table[count];
305	#endif
306	if (count) {
307	eflags = cc_table[CC_OP].compute_all();
308	src = T0;
309	res = (T0 << count) \| ((eflags & CC_C) << (count - 1));
310	if (count > 1)
311	res \|= T0 >> (DATA_BITS + 1 - count);
312	T0 = res;
313	CC_SRC = (eflags & ~(CC_C \| CC_O)) \|
314	(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) \|
315	((src >> (DATA_BITS - count)) & CC_C);
316	CC_OP = CC_OP_EFLAGS;
317	}
318	}
319
320	void OPPROTO glue(glue(op_rcr, SUFFIX), _T0_T1_cc)(void)
321	{
322	int count, res, eflags;
323	unsigned int src;
324
325	count = T1 & 0x1f;
326	#if DATA_BITS == 16
327	count = rclw_table[count];
328	#elif DATA_BITS == 8
329	count = rclb_table[count];
330	#endif
331	if (count) {
332	eflags = cc_table[CC_OP].compute_all();
333	src = T0;
334	res = (T0 >> count) \| ((eflags & CC_C) << (DATA_BITS - count));
335	if (count > 1)
336	res \|= T0 << (DATA_BITS + 1 - count);
337	T0 = res;
338	CC_SRC = (eflags & ~(CC_C \| CC_O)) \|
339	(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) \|
340	((src >> (count - 1)) & CC_C);
341	CC_OP = CC_OP_EFLAGS;
342	}
343	}
344
345	void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1_cc)(void)
346	{
347	int count;
348	count = T1 & 0x1f;
349	if (count == 1) {
350	CC_SRC = T0;
351	T0 = T0 << 1;
352	CC_DST = T0;
353	CC_OP = CC_OP_ADDB + SHIFT;
354	} else if (count) {
355	CC_SRC = T0 >> (DATA_BITS - count);
356	T0 = T0 << count;
357	CC_DST = T0;
358	CC_OP = CC_OP_SHLB + SHIFT;
359	}
360	}
361
362	void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1_cc)(void)
363	{
364	int count;
365	count = T1 & 0x1f;
366	if (count) {
367	T0 &= DATA_MASK;
368	CC_SRC = T0 >> (count - 1);
369	T0 = T0 >> count;
370	CC_DST = T0;
371	CC_OP = CC_OP_SHLB + SHIFT;
372	}
373	}
374
375	void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1_cc)(void)
376	{
377	int count, src;
378	count = T1 & 0x1f;
379	if (count) {
380	src = (DATA_STYPE)T0;
381	CC_SRC = src >> (count - 1);
382	T0 = src >> count;
383	CC_DST = T0;
384	CC_OP = CC_OP_SHLB + SHIFT;
385	}
386	}
387
388	/* string operations */
389	/* XXX: maybe use lower level instructions to ease exception handling */
390
391	void OPPROTO glue(op_movs, SUFFIX)(void)
392	{
393	int v;
394	v = glue(ldu, SUFFIX)((void *)ESI);
395	glue(st, SUFFIX)((void *)EDI, v);
396	ESI += (DF << SHIFT);
397	EDI += (DF << SHIFT);
398	}
399
400	void OPPROTO glue(op_rep_movs, SUFFIX)(void)
401	{
402	int v, inc;
403	inc = (DF << SHIFT);
404	while (ECX != 0) {
405	v = glue(ldu, SUFFIX)((void *)ESI);
406	glue(st, SUFFIX)((void *)EDI, v);
407	ESI += inc;
408	EDI += inc;
409	ECX--;
410	}
411	}
412
413	void OPPROTO glue(op_stos, SUFFIX)(void)
414	{
415	glue(st, SUFFIX)((void *)EDI, EAX);
416	EDI += (DF << SHIFT);
417	}
418
419	void OPPROTO glue(op_rep_stos, SUFFIX)(void)
420	{
421	int inc;
422	inc = (DF << SHIFT);
423	while (ECX != 0) {
424	glue(st, SUFFIX)((void *)EDI, EAX);
425	EDI += inc;
426	ECX--;
427	}
428	}
429
430	void OPPROTO glue(op_lods, SUFFIX)(void)
431	{
432	int v;
433	v = glue(ldu, SUFFIX)((void *)ESI);
434	#if SHIFT == 0
435	EAX = (EAX & ~0xff) \| v;
436	#elif SHIFT == 1
437	EAX = (EAX & ~0xffff) \| v;
438	#else
439	EAX = v;
440	#endif
441	ESI += (DF << SHIFT);
442	}
443
444	/* don't know if it is used */
445	void OPPROTO glue(op_rep_lods, SUFFIX)(void)
446	{
447	int v, inc;
448	inc = (DF << SHIFT);
449	while (ECX != 0) {
450	v = glue(ldu, SUFFIX)((void *)ESI);
451	#if SHIFT == 0
452	EAX = (EAX & ~0xff) \| v;
453	#elif SHIFT == 1
454	EAX = (EAX & ~0xffff) \| v;
455	#else
456	EAX = v;
457	#endif
458	ESI += inc;
459	ECX--;
460	}
461	}
462
463	void OPPROTO glue(op_scas, SUFFIX)(void)
464	{
465	int v;
466
467	v = glue(ldu, SUFFIX)((void *)ESI);
468	ESI += (DF << SHIFT);
469	CC_SRC = EAX;
470	CC_DST = EAX - v;
471	}
472
473	void OPPROTO glue(op_repz_scas, SUFFIX)(void)
474	{
475	int v1, v2, inc;
476
477	if (ECX != 0) {
478	/* NOTE: the flags are not modified if ECX == 0 */
479	#if SHIFT == 0
480	v1 = EAX & 0xff;
481	#elif SHIFT == 1
482	v1 = EAX & 0xffff;
483	#else
484	v1 = EAX;
485	#endif
486	inc = (DF << SHIFT);
487	do {
488	v2 = glue(ldu, SUFFIX)((void *)ESI);
489	if (v1 != v2)
490	break;
491	ESI += inc;
492	ECX--;
493	} while (ECX != 0);
494	CC_SRC = v1;
495	CC_DST = v1 - v2;
496	CC_OP = CC_OP_SUBB + SHIFT;
497	}
498	}
499
500	void OPPROTO glue(op_repnz_scas, SUFFIX)(void)
501	{
502	int v1, v2, inc;
503
504	if (ECX != 0) {
505	/* NOTE: the flags are not modified if ECX == 0 */
506	#if SHIFT == 0
507	v1 = EAX & 0xff;
508	#elif SHIFT == 1
509	v1 = EAX & 0xffff;
510	#else
511	v1 = EAX;
512	#endif
513	inc = (DF << SHIFT);
514	do {
515	v2 = glue(ldu, SUFFIX)((void *)ESI);
516	if (v1 == v2)
517	break;
518	ESI += inc;
519	ECX--;
520	} while (ECX != 0);
521	CC_SRC = v1;
522	CC_DST = v1 - v2;
523	CC_OP = CC_OP_SUBB + SHIFT;
524	}
525	}
526
527	void OPPROTO glue(op_cmps, SUFFIX)(void)
528	{
529	int v1, v2;
530	v1 = glue(ldu, SUFFIX)((void *)ESI);
531	v2 = glue(ldu, SUFFIX)((void *)EDI);
532	ESI += (DF << SHIFT);
533	EDI += (DF << SHIFT);
534	CC_SRC = v1;
535	CC_DST = v1 - v2;
536	}
537
538	void OPPROTO glue(op_repz_cmps, SUFFIX)(void)
539	{
540	int v1, v2, inc;
541	if (ECX != 0) {
542	inc = (DF << SHIFT);
543	do {
544	v1 = glue(ldu, SUFFIX)((void *)ESI);
545	v2 = glue(ldu, SUFFIX)((void *)EDI);
546	if (v1 != v2)
547	break;
548	ESI += inc;
549	EDI += inc;
550	ECX--;
551	} while (ECX != 0);
552	CC_SRC = v1;
553	CC_DST = v1 - v2;
554	CC_OP = CC_OP_SUBB + SHIFT;
555	}
556	}
557
558	void OPPROTO glue(op_repnz_cmps, SUFFIX)(void)
559	{
560	int v1, v2, inc;
561	if (ECX != 0) {
562	inc = (DF << SHIFT);
563	do {
564	v1 = glue(ldu, SUFFIX)((void *)ESI);
565	v2 = glue(ldu, SUFFIX)((void *)EDI);
566	if (v1 == v2)
567	break;
568	ESI += inc;
569	EDI += inc;
570	ECX--;
571	} while (ECX != 0);
572	CC_SRC = v1;
573	CC_DST = v1 - v2;
574	CC_OP = CC_OP_SUBB + SHIFT;
575	}
576	}
577
578	void OPPROTO glue(op_outs, SUFFIX)(void)
579	{
580	int v, dx;
581	dx = EDX & 0xffff;
582	v = glue(ldu, SUFFIX)((void *)ESI);
583	glue(port_out, SUFFIX)(dx, v);
584	ESI += (DF << SHIFT);
585	}
586
587	void OPPROTO glue(op_rep_outs, SUFFIX)(void)
588	{
589	int v, dx, inc;
590	inc = (DF << SHIFT);
591	dx = EDX & 0xffff;
592	while (ECX != 0) {
593	v = glue(ldu, SUFFIX)((void *)ESI);
594	glue(port_out, SUFFIX)(dx, v);
595	ESI += inc;
596	ECX--;
597	}
598	}
599
600	void OPPROTO glue(op_ins, SUFFIX)(void)
601	{
602	int v, dx;
603	dx = EDX & 0xffff;
604	v = glue(port_in, SUFFIX)(dx);
605	glue(st, SUFFIX)((void *)EDI, v);
606	EDI += (DF << SHIFT);
607	}
608
609	void OPPROTO glue(op_rep_ins, SUFFIX)(void)
610	{
611	int v, dx, inc;
612	inc = (DF << SHIFT);
613	dx = EDX & 0xffff;
614	while (ECX != 0) {
615	v = glue(port_in, SUFFIX)(dx);
616	glue(st, SUFFIX)((void *)EDI, v);
617	EDI += (DF << SHIFT);
618	ECX--;
619	}
620	}
621
622	#undef DATA_BITS
623	#undef SHIFT_MASK
624	#undef SIGN_MASK
625	#undef DATA_TYPE
626	#undef DATA_STYPE
627	#undef DATA_MASK
628	#undef SUFFIX