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77f8dd5add
xemu/ops_template.h
bellard 77f8dd5add float fixes - added bsr/bsf support 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@23 c046a42c-6fe2-441c-8c8c-71466251a162
2003-03-05 22:24:48 +00:00

915 lines
20 KiB
C
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#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_adc, SUFFIX)(void)
{
int cf, pf, af, zf, sf, of;
int src1, src2;
src1 = CC_SRC;
src2 = CC_DST - CC_SRC - 1;
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_adc, 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) & (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)src2;
return cf;
}
static int glue(compute_all_sbb, SUFFIX)(void)
{
int cf, pf, af, zf, sf, of;
int src1, src2;
src1 = CC_SRC;
src2 = CC_SRC - CC_DST - 1;
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) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
}
static int glue(compute_c_sbb, SUFFIX)(void)
{
int src1, src2, cf;
src1 = CC_SRC;
src2 = CC_SRC - CC_DST - 1;
cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2;
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 = ((CC_DST & DATA_MASK) == SIGN_MASK) << 11;
return cf | pf | af | zf | sf | of;
}
#if DATA_BITS == 32
static int glue(compute_c_inc, SUFFIX)(void)
{
return CC_SRC;
}
#endif
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 = ((CC_DST & DATA_MASK) == ((uint32_t)SIGN_MASK - 1)) << 11;
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 >> (DATA_BITS - 1)) & CC_C;
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 is defined if shift count == 1 */
of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
}
#if DATA_BITS == 32
static int glue(compute_c_shl, SUFFIX)(void)
{
return CC_SRC & 1;
}
#endif
static int glue(compute_all_sar, 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 is defined if shift count == 1 */
of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
}
/* 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;
}
FORCE_RET();
}
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;
}
FORCE_RET();
}
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();
T0 &= DATA_MASK;
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;
}
FORCE_RET();
}
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();
T0 &= DATA_MASK;
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;
}
FORCE_RET();
}
void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1_cc)(void)
{
int count;
count = T1 & 0x1f;
if (count) {
CC_SRC = (DATA_TYPE)T0 << (count - 1);
T0 = T0 << count;
CC_DST = T0;
CC_OP = CC_OP_SHLB + SHIFT;
}
FORCE_RET();
}
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_SARB + SHIFT;
}
FORCE_RET();
}
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_SARB + SHIFT;
}
FORCE_RET();
}
#if DATA_BITS == 16
/* XXX: overflow flag might be incorrect in some cases in shldw */
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void)
{
int count;
unsigned int res;
count = PARAM1;
T1 &= 0xffff;
res = T1 | (T0 << 16);
CC_SRC = res >> (32 - count);
res <<= count;
if (count > 16)
res |= T1 << (count - 16);
T0 = res >> 16;
CC_DST = T0;
}
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void)
{
int count;
unsigned int res;
count = ECX & 0x1f;
if (count) {
T1 &= 0xffff;
res = T1 | (T0 << 16);
CC_SRC = res >> (32 - count);
res <<= count;
if (count > 16)
res |= T1 << (count - 16);
T0 = res >> 16;
CC_DST = T0;
CC_OP = CC_OP_SARB + SHIFT;
}
}
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void)
{
int count;
unsigned int res;
count = PARAM1;
res = (T0 & 0xffff) | (T1 << 16);
CC_SRC = res >> (count - 1);
res >>= count;
if (count > 16)
res |= T1 << (32 - count);
T0 = res;
CC_DST = T0;
}
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void)
{
int count;
unsigned int res;
count = ECX & 0x1f;
if (count) {
res = (T0 & 0xffff) | (T1 << 16);
CC_SRC = res >> (count - 1);
res >>= count;
if (count > 16)
res |= T1 << (32 - count);
T0 = res;
CC_DST = T0;
CC_OP = CC_OP_SARB + SHIFT;
}
}
#endif
#if DATA_BITS == 32
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void)
{
int count;
count = PARAM1;
T0 &= DATA_MASK;
T1 &= DATA_MASK;
CC_SRC = T0 << (count - 1);
T0 = (T0 << count) | (T1 >> (DATA_BITS - count));
CC_DST = T0;
}
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void)
{
int count;
count = ECX & 0x1f;
if (count) {
T0 &= DATA_MASK;
T1 &= DATA_MASK;
CC_SRC = T0 << (count - 1);
T0 = (T0 << count) | (T1 >> (DATA_BITS - count));
CC_DST = T0;
CC_OP = CC_OP_SHLB + SHIFT;
}
}
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void)
{
int count;
count = PARAM1;
T0 &= DATA_MASK;
T1 &= DATA_MASK;
CC_SRC = T0 >> (count - 1);
T0 = (T0 >> count) | (T1 << (DATA_BITS - count));
CC_DST = T0;
}
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void)
{
int count;
count = ECX & 0x1f;
if (count) {
T0 &= DATA_MASK;
T1 &= DATA_MASK;
CC_SRC = T0 >> (count - 1);
T0 = (T0 >> count) | (T1 << (DATA_BITS - count));
CC_DST = T0;
CC_OP = CC_OP_SARB + SHIFT;
}
}
#endif
/* carry add/sub (we only need to set CC_OP differently) */
void OPPROTO glue(glue(op_adc, SUFFIX), _T0_T1_cc)(void)
{
int cf;
cf = cc_table[CC_OP].compute_c();
CC_SRC = T0;
T0 = T0 + T1 + cf;
CC_DST = T0;
CC_OP = CC_OP_ADDB + SHIFT + cf * 3;
}
void OPPROTO glue(glue(op_sbb, SUFFIX), _T0_T1_cc)(void)
{
int cf;
cf = cc_table[CC_OP].compute_c();
CC_SRC = T0;
T0 = T0 - T1 - cf;
CC_DST = T0;
CC_OP = CC_OP_SUBB + SHIFT + cf * 3;
}
/* bit operations */
#if DATA_BITS >= 16
void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void)
{
int count;
count = T1 & SHIFT_MASK;
CC_SRC = T0 >> count;
}
void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void)
{
int count;
count = T1 & SHIFT_MASK;
CC_SRC = T0 >> count;
T0 |= (1 << count);
}
void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void)
{
int count;
count = T1 & SHIFT_MASK;
CC_SRC = T0 >> count;
T0 &= ~(1 << count);
}
void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void)
{
int count;
count = T1 & SHIFT_MASK;
CC_SRC = T0 >> count;
T0 ^= (1 << count);
}
void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void)
{
int res, count;
res = T0 & DATA_MASK;
if (res != 0) {
count = 0;
while ((res & 1) == 0) {
count++;
res >>= 1;
}
T0 = count;
CC_DST = 1; /* ZF = 1 */
} else {
CC_DST = 0; /* ZF = 1 */
}
FORCE_RET();
}
void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void)
{
int res, count;
res = T0 & DATA_MASK;
if (res != 0) {
count = DATA_BITS - 1;
while ((res & SIGN_MASK) == 0) {
count--;
res <<= 1;
}
T0 = count;
CC_DST = 1; /* ZF = 1 */
} else {
CC_DST = 0; /* ZF = 1 */
}
FORCE_RET();
}
#endif
/* 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 *)EDI);
EDI += (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 */
v1 = EAX & DATA_MASK;
inc = (DF << SHIFT);
do {
v2 = glue(ldu, SUFFIX)((void *)EDI);
EDI += inc;
ECX--;
if (v1 != v2)
break;
} 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 */
v1 = EAX & DATA_MASK;
inc = (DF << SHIFT);
do {
v2 = glue(ldu, SUFFIX)((void *)EDI);
EDI += inc;
ECX--;
if (v1 == v2)
break;
} 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);
ESI += inc;
EDI += inc;
ECX--;
if (v1 != v2)
break;
} 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);
ESI += inc;
EDI += inc;
ECX--;
if (v1 == v2)
break;
} while (ECX != 0);
CC_SRC = v1;
CC_DST = v1 - v2;
CC_OP = CC_OP_SUBB + SHIFT;
}
}
/* port I/O */
void OPPROTO glue(op_outs, SUFFIX)(void)
{
int v, dx;
dx = EDX & 0xffff;
v = glue(ldu, SUFFIX)((void *)ESI);
glue(cpu_x86_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(cpu_x86_out, SUFFIX)(dx, v);
ESI += inc;
ECX--;
}
}
void OPPROTO glue(op_ins, SUFFIX)(void)
{
int v, dx;
dx = EDX & 0xffff;
v = glue(cpu_x86_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(cpu_x86_in, SUFFIX)(dx);
glue(st, SUFFIX)((void *)EDI, v);
EDI += (DF << SHIFT);
ECX--;
}
}
void OPPROTO glue(glue(op_out, SUFFIX), _T0_T1)(void)
{
glue(cpu_x86_out, SUFFIX)(T0 & 0xffff, T1 & DATA_MASK);
}
void OPPROTO glue(glue(op_in, SUFFIX), _T0_T1)(void)
{
T1 = glue(cpu_x86_in, SUFFIX)(T0 & 0xffff);
}
#undef DATA_BITS
#undef SHIFT_MASK
#undef SIGN_MASK
#undef DATA_TYPE
#undef DATA_STYPE
#undef DATA_MASK
#undef SUFFIX
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