Revision 603fccce target-alpha/op_helper.c
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*/ |
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#include "exec.h" |
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#include "host-utils.h" |
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#include "softfloat.h" |
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#include "op_helper.h" |
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void helper_ctpop (void) |
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{
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int n; |
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for (n = 0; T0 != 0; n++) |
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T0 = T0 ^ (T0 - 1); |
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T0 = n; |
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T0 = ctpop64(T0); |
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} |
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void helper_ctlz (void) |
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{
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uint32_t op32; |
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int n; |
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n = 0; |
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if (!(T0 & 0xFFFFFFFF00000000ULL)) {
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n += 32; |
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T0 <<= 32; |
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} |
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/* Make it easier for 32 bits hosts */ |
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op32 = T0 >> 32; |
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if (!(op32 & 0xFFFF0000UL)) {
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n += 16; |
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op32 <<= 16; |
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} |
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if (!(op32 & 0xFF000000UL)) {
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n += 8; |
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op32 <<= 8; |
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} |
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if (!(op32 & 0xF0000000UL)) {
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n += 4; |
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op32 <<= 4; |
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} |
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if (!(op32 & 0xC0000000UL)) {
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n += 2; |
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op32 <<= 2; |
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} |
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if (!(op32 & 0x80000000UL)) {
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n++; |
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op32 <<= 1; |
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} |
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if (!(op32 & 0x80000000UL)) {
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n++; |
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} |
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T0 = n; |
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T0 = clz64(T0); |
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} |
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void helper_cttz (void) |
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{
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uint32_t op32; |
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int n; |
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n = 0; |
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if (!(T0 & 0x00000000FFFFFFFFULL)) {
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n += 32; |
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T0 >>= 32; |
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} |
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/* Make it easier for 32 bits hosts */ |
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op32 = T0; |
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if (!(op32 & 0x0000FFFFUL)) {
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n += 16; |
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op32 >>= 16; |
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} |
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if (!(op32 & 0x000000FFUL)) {
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n += 8; |
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op32 >>= 8; |
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} |
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if (!(op32 & 0x0000000FUL)) {
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n += 4; |
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op32 >>= 4; |
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} |
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if (!(op32 & 0x00000003UL)) {
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n += 2; |
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op32 >>= 2; |
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} |
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if (!(op32 & 0x00000001UL)) {
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n++; |
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op32 >>= 1; |
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} |
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if (!(op32 & 0x00000001UL)) {
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n++; |
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} |
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T0 = n; |
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T0 = ctz64(T0); |
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} |
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static always_inline uint64_t byte_zap (uint64_t op, uint8_t mskb) |
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