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Make Alpha and PowerPC targets use shared helpers

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

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)