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Make Alpha and PowerPC targets use shared helpers

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for clz, clo, ctz, cto and ctpop.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3466 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-10-28 12:54:53 +00:00
parent b9ef45ffa8
commit 603fcccece
4 changed files with 29 additions and 162 deletions
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77
target-alpha/op_helper.c
View File

@ -19,6 +19,7 @@
*/
#include "exec.h"
#include "host-utils.h"
#include "softfloat.h"
#include "op_helper.h"
@ -211,87 +212,17 @@ void helper_mulqv ()
void helper_ctpop (void)
{
int n;
for (n = 0; T0 != 0; n++)
T0 = T0 ^ (T0 - 1);
T0 = n;
T0 = ctpop64(T0);
}
void helper_ctlz (void)
{
uint32_t op32;
int n;
n = 0;
if (!(T0 & 0xFFFFFFFF00000000ULL)) {
n += 32;
T0 <<= 32;
}
/* Make it easier for 32 bits hosts */
op32 = T0 >> 32;
if (!(op32 & 0xFFFF0000UL)) {
n += 16;
op32 <<= 16;
}
if (!(op32 & 0xFF000000UL)) {
n += 8;
op32 <<= 8;
}
if (!(op32 & 0xF0000000UL)) {
n += 4;
op32 <<= 4;
}
if (!(op32 & 0xC0000000UL)) {
n += 2;
op32 <<= 2;
}
if (!(op32 & 0x80000000UL)) {
n++;
op32 <<= 1;
}
if (!(op32 & 0x80000000UL)) {
n++;
}
T0 = n;
T0 = clz64(T0);
}
void helper_cttz (void)
{
uint32_t op32;
int n;
n = 0;
if (!(T0 & 0x00000000FFFFFFFFULL)) {
n += 32;
T0 >>= 32;
}
/* Make it easier for 32 bits hosts */
op32 = T0;
if (!(op32 & 0x0000FFFFUL)) {
n += 16;
op32 >>= 16;
}
if (!(op32 & 0x000000FFUL)) {
n += 8;
op32 >>= 8;
}
if (!(op32 & 0x0000000FUL)) {
n += 4;
op32 >>= 4;
}
if (!(op32 & 0x00000003UL)) {
n += 2;
op32 >>= 2;
}
if (!(op32 & 0x00000001UL)) {
n++;
op32 >>= 1;
}
if (!(op32 & 0x00000001UL)) {
n++;
}
T0 = n;
T0 = ctz64(T0);
}
static always_inline uint64_t byte_zap (uint64_t op, uint8_t mskb)

5
target-ppc/op.c
View File

@ -22,6 +22,7 @@
#include "config.h"
#include "exec.h"
#include "host-utils.h"
#include "helper_regs.h"
#include "op_helper.h"
@ -1508,14 +1509,14 @@ void OPPROTO op_andi_T1_64 (void)
/* count leading zero */
void OPPROTO op_cntlzw (void)
{
T0 = _do_cntlzw(T0);
do_cntlzw();
RETURN();
}
#if defined(TARGET_PPC64)
void OPPROTO op_cntlzd (void)
{
T0 = _do_cntlzd(T0);
do_cntlzd();
RETURN();
}
#endif

33
target-ppc/op_helper.c
View File

@ -18,6 +18,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "exec.h"
#include "host-utils.h"
#include "helper_regs.h"
#include "op_helper.h"
@ -381,6 +382,18 @@ void do_subfzeo_64 (void)
}
#endif
void do_cntlzw (void)
{
T0 = clz32(T0);
}
#if defined(TARGET_PPC64)
void do_cntlzd (void)
{
T0 = clz64(T0);
}
#endif
/* shift right arithmetic helper */
void do_sraw (void)
{
@ -438,16 +451,6 @@ void do_srad (void)
}
#endif
static always_inline int popcnt (uint32_t val)
{
int i;
for (i = 0; val != 0;)
val = val ^ (val - 1);
return i;
}
void do_popcntb (void)
{
uint32_t ret;
@ -455,7 +458,7 @@ void do_popcntb (void)
ret = 0;
for (i = 0; i < 32; i += 8)
ret |= popcnt((T0 >> i) & 0xFF) << i;
ret |= ctpop8((T0 >> i) & 0xFF) << i;
T0 = ret;
}
@ -467,7 +470,7 @@ void do_popcntb_64 (void)
ret = 0;
for (i = 0; i < 64; i += 8)
ret |= popcnt((T0 >> i) & 0xFF) << i;
ret |= ctpop8((T0 >> i) & 0xFF) << i;
T0 = ret;
}
#endif
@ -1924,14 +1927,14 @@ static always_inline uint32_t _do_eaddw (uint32_t op1, uint32_t op2)
static always_inline int _do_ecntlsw (uint32_t val)
{
if (val & 0x80000000)
return _do_cntlzw(~val);
return clz32(~val);
else
return _do_cntlzw(val);
return clz32(val);
}
static always_inline int _do_ecntlzw (uint32_t val)
{
return _do_cntlzw(val);
return clz32(val);
}
static always_inline uint32_t _do_eneg (uint32_t val)

76
target-ppc/op_helper.h
View File

@ -75,6 +75,10 @@ void do_nego (void);
void do_subfe (void);
void do_subfmeo (void);
void do_subfzeo (void);
void do_cntlzw (void);
#if defined(TARGET_PPC64)
void do_cntlzd (void);
#endif
void do_sraw (void);
#if defined(TARGET_PPC64)
void do_adde_64 (void);
@ -285,78 +289,6 @@ void do_evfsctsiz (void);
void do_evfsctuiz (void);
#endif /* defined(TARGET_PPCEMB) */
/* Inlined helpers: used in micro-operation as well as helpers */
/* Generic fixed-point helpers */
static always_inline int _do_cntlzw (uint32_t val)
{
int cnt = 0;
if (!(val & 0xFFFF0000UL)) {
cnt += 16;
val <<= 16;
}
if (!(val & 0xFF000000UL)) {
cnt += 8;
val <<= 8;
}
if (!(val & 0xF0000000UL)) {
cnt += 4;
val <<= 4;
}
if (!(val & 0xC0000000UL)) {
cnt += 2;
val <<= 2;
}
if (!(val & 0x80000000UL)) {
cnt++;
val <<= 1;
}
if (!(val & 0x80000000UL)) {
cnt++;
}
return cnt;
}
static always_inline int _do_cntlzd (uint64_t val)
{
int cnt = 0;
#if HOST_LONG_BITS == 64
if (!(val & 0xFFFFFFFF00000000ULL)) {
cnt += 32;
val <<= 32;
}
if (!(val & 0xFFFF000000000000ULL)) {
cnt += 16;
val <<= 16;
}
if (!(val & 0xFF00000000000000ULL)) {
cnt += 8;
val <<= 8;
}
if (!(val & 0xF000000000000000ULL)) {
cnt += 4;
val <<= 4;
}
if (!(val & 0xC000000000000000ULL)) {
cnt += 2;
val <<= 2;
}
if (!(val & 0x8000000000000000ULL)) {
cnt++;
val <<= 1;
}
if (!(val & 0x8000000000000000ULL)) {
cnt++;
}
#else
/* Make it easier on 32 bits host machines */
if (!(val >> 32))
cnt = _do_cntlzw(val) + 32;
else
cnt = _do_cntlzw(val >> 32);
#endif
return cnt;
}
#if defined(TARGET_PPCEMB)
/* SPE extension */
/* Single precision floating-point helpers */