mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-08-06 01:03:55 -06:00
Implement SSE4.1, SSE4.2 (x86).
This adds support for CPUID_EXT_SSE41, CPUID_EXT_SSE42, CPUID_EXT_POPCNT extensions. Most instructions haven't been tested yet. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5411 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog
parent
06adb549e6
commit
222a3336ec
4 changed files with 992 additions and 37 deletions
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@ -1,7 +1,8 @@
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/*
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* MMX/3DNow!/SSE/SSE2/SSE3/SSSE3/PNI support
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* MMX/3DNow!/SSE/SSE2/SSE3/SSSE3/SSE4/PNI support
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*
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* Copyright (c) 2005 Fabrice Bellard
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* Copyright (c) 2008 Intel Corporation <andrew.zaborowski@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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@ -1420,6 +1421,621 @@ void glue(helper_palignr, SUFFIX) (Reg *d, Reg *s, int32_t shift)
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*d = r;
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}
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#define XMM0 env->xmm_regs[0]
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#if SHIFT == 1
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#define SSE_HELPER_V(name, elem, num, F)\
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void glue(name, SUFFIX) (Reg *d, Reg *s)\
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{\
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d->elem(0) = F(d->elem(0), s->elem(0), XMM0.elem(0));\
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d->elem(1) = F(d->elem(1), s->elem(1), XMM0.elem(1));\
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if (num > 2) {\
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d->elem(2) = F(d->elem(2), s->elem(2), XMM0.elem(2));\
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d->elem(3) = F(d->elem(3), s->elem(3), XMM0.elem(3));\
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if (num > 4) {\
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d->elem(4) = F(d->elem(4), s->elem(4), XMM0.elem(4));\
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d->elem(5) = F(d->elem(5), s->elem(5), XMM0.elem(5));\
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d->elem(6) = F(d->elem(6), s->elem(6), XMM0.elem(6));\
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d->elem(7) = F(d->elem(7), s->elem(7), XMM0.elem(7));\
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if (num > 8) {\
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d->elem(8) = F(d->elem(8), s->elem(8), XMM0.elem(8));\
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d->elem(9) = F(d->elem(9), s->elem(9), XMM0.elem(9));\
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d->elem(10) = F(d->elem(10), s->elem(10), XMM0.elem(10));\
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d->elem(11) = F(d->elem(11), s->elem(11), XMM0.elem(11));\
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d->elem(12) = F(d->elem(12), s->elem(12), XMM0.elem(12));\
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d->elem(13) = F(d->elem(13), s->elem(13), XMM0.elem(13));\
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d->elem(14) = F(d->elem(14), s->elem(14), XMM0.elem(14));\
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d->elem(15) = F(d->elem(15), s->elem(15), XMM0.elem(15));\
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}\
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}\
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}\
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}
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#define SSE_HELPER_I(name, elem, num, F)\
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void glue(name, SUFFIX) (Reg *d, Reg *s, uint32_t imm)\
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{\
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d->elem(0) = F(d->elem(0), s->elem(0), ((imm >> 0) & 1));\
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d->elem(1) = F(d->elem(1), s->elem(1), ((imm >> 1) & 1));\
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if (num > 2) {\
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d->elem(2) = F(d->elem(2), s->elem(2), ((imm >> 2) & 1));\
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d->elem(3) = F(d->elem(3), s->elem(3), ((imm >> 3) & 1));\
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if (num > 4) {\
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d->elem(4) = F(d->elem(4), s->elem(4), ((imm >> 4) & 1));\
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d->elem(5) = F(d->elem(5), s->elem(5), ((imm >> 5) & 1));\
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d->elem(6) = F(d->elem(6), s->elem(6), ((imm >> 6) & 1));\
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d->elem(7) = F(d->elem(7), s->elem(7), ((imm >> 7) & 1));\
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if (num > 8) {\
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d->elem(8) = F(d->elem(8), s->elem(8), ((imm >> 8) & 1));\
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d->elem(9) = F(d->elem(9), s->elem(9), ((imm >> 9) & 1));\
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d->elem(10) = F(d->elem(10), s->elem(10), ((imm >> 10) & 1));\
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d->elem(11) = F(d->elem(11), s->elem(11), ((imm >> 11) & 1));\
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d->elem(12) = F(d->elem(12), s->elem(12), ((imm >> 12) & 1));\
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d->elem(13) = F(d->elem(13), s->elem(13), ((imm >> 13) & 1));\
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d->elem(14) = F(d->elem(14), s->elem(14), ((imm >> 14) & 1));\
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d->elem(15) = F(d->elem(15), s->elem(15), ((imm >> 15) & 1));\
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}\
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}\
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}\
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}
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/* SSE4.1 op helpers */
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#define FBLENDVB(d, s, m) (m & 0x80) ? s : d
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#define FBLENDVPS(d, s, m) (m & 0x80000000) ? s : d
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#define FBLENDVPD(d, s, m) (m & 0x8000000000000000) ? s : d
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SSE_HELPER_V(helper_pblendvb, B, 16, FBLENDVB)
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SSE_HELPER_V(helper_blendvps, L, 4, FBLENDVPS)
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SSE_HELPER_V(helper_blendvpd, Q, 2, FBLENDVPD)
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void glue(helper_ptest, SUFFIX) (Reg *d, Reg *s)
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{
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uint64_t zf = (s->Q(0) & d->Q(0)) | (s->Q(1) & d->Q(1));
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uint64_t cf = (s->Q(0) & ~d->Q(0)) | (s->Q(1) & ~d->Q(1));
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CC_SRC = (zf ? 0 : CC_Z) | (cf ? 0 : CC_C);
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}
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#define SSE_HELPER_F(name, elem, num, F)\
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void glue(name, SUFFIX) (Reg *d, Reg *s)\
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{\
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d->elem(0) = F(0);\
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d->elem(1) = F(1);\
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d->elem(2) = F(2);\
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d->elem(3) = F(3);\
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if (num > 3) {\
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d->elem(4) = F(4);\
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d->elem(5) = F(5);\
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if (num > 5) {\
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d->elem(6) = F(6);\
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d->elem(7) = F(7);\
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}\
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}\
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}
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SSE_HELPER_F(helper_pmovsxbw, W, 8, (int8_t) s->B)
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SSE_HELPER_F(helper_pmovsxbd, L, 4, (int8_t) s->B)
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SSE_HELPER_F(helper_pmovsxbq, Q, 2, (int8_t) s->B)
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SSE_HELPER_F(helper_pmovsxwd, L, 4, (int16_t) s->W)
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SSE_HELPER_F(helper_pmovsxwq, Q, 2, (int16_t) s->W)
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SSE_HELPER_F(helper_pmovsxdq, Q, 2, (int32_t) s->L)
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SSE_HELPER_F(helper_pmovzxbw, W, 8, s->B)
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SSE_HELPER_F(helper_pmovzxbd, L, 4, s->B)
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SSE_HELPER_F(helper_pmovzxbq, Q, 2, s->B)
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SSE_HELPER_F(helper_pmovzxwd, L, 4, s->W)
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SSE_HELPER_F(helper_pmovzxwq, Q, 2, s->W)
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SSE_HELPER_F(helper_pmovzxdq, Q, 2, s->L)
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void glue(helper_pmuldq, SUFFIX) (Reg *d, Reg *s)
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{
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d->Q(0) = (int64_t) (int32_t) d->L(0) * (int32_t) s->L(0);
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d->Q(1) = (int64_t) (int32_t) d->L(2) * (int32_t) s->L(2);
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}
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#define FCMPEQQ(d, s) d == s ? -1 : 0
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SSE_HELPER_Q(helper_pcmpeqq, FCMPEQQ)
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void glue(helper_packusdw, SUFFIX) (Reg *d, Reg *s)
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{
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d->W(0) = satuw((int32_t) d->L(0));
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d->W(1) = satuw((int32_t) d->L(1));
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d->W(2) = satuw((int32_t) d->L(2));
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d->W(3) = satuw((int32_t) d->L(3));
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d->W(4) = satuw((int32_t) s->L(0));
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d->W(5) = satuw((int32_t) s->L(1));
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d->W(6) = satuw((int32_t) s->L(2));
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d->W(7) = satuw((int32_t) s->L(3));
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}
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#define FMINSB(d, s) MIN((int8_t) d, (int8_t) s)
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#define FMINSD(d, s) MIN((int32_t) d, (int32_t) s)
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#define FMAXSB(d, s) MAX((int8_t) d, (int8_t) s)
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#define FMAXSD(d, s) MAX((int32_t) d, (int32_t) s)
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SSE_HELPER_B(helper_pminsb, FMINSB)
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SSE_HELPER_L(helper_pminsd, FMINSD)
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SSE_HELPER_W(helper_pminuw, MIN)
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SSE_HELPER_L(helper_pminud, MIN)
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SSE_HELPER_B(helper_pmaxsb, FMAXSB)
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SSE_HELPER_L(helper_pmaxsd, FMAXSD)
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SSE_HELPER_W(helper_pmaxuw, MAX)
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SSE_HELPER_L(helper_pmaxud, MAX)
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#define FMULLD(d, s) (int32_t) d * (int32_t) s
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SSE_HELPER_L(helper_pmulld, FMULLD)
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void glue(helper_phminposuw, SUFFIX) (Reg *d, Reg *s)
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{
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int idx = 0;
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if (s->W(1) < s->W(idx))
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idx = 1;
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if (s->W(2) < s->W(idx))
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idx = 2;
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if (s->W(3) < s->W(idx))
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idx = 3;
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if (s->W(4) < s->W(idx))
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idx = 4;
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if (s->W(5) < s->W(idx))
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idx = 5;
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if (s->W(6) < s->W(idx))
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idx = 6;
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if (s->W(7) < s->W(idx))
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idx = 7;
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d->Q(1) = 0;
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d->L(1) = 0;
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d->W(1) = idx;
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d->W(0) = s->W(idx);
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}
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void glue(helper_roundps, SUFFIX) (Reg *d, Reg *s, uint32_t mode)
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{
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signed char prev_rounding_mode;
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prev_rounding_mode = env->sse_status.float_rounding_mode;
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if (!(mode & (1 << 2)))
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switch (mode & 3) {
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case 0:
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set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
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break;
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case 1:
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set_float_rounding_mode(float_round_down, &env->sse_status);
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break;
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case 2:
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set_float_rounding_mode(float_round_up, &env->sse_status);
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break;
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case 3:
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set_float_rounding_mode(float_round_to_zero, &env->sse_status);
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break;
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}
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d->L(0) = float64_round_to_int(s->L(0), &env->sse_status);
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d->L(1) = float64_round_to_int(s->L(1), &env->sse_status);
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d->L(2) = float64_round_to_int(s->L(2), &env->sse_status);
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d->L(3) = float64_round_to_int(s->L(3), &env->sse_status);
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#if 0 /* TODO */
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if (mode & (1 << 3))
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set_float_exception_flags(
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get_float_exception_flags(&env->sse_status) &
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~float_flag_inexact,
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&env->sse_status);
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#endif
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env->sse_status.float_rounding_mode = prev_rounding_mode;
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}
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void glue(helper_roundpd, SUFFIX) (Reg *d, Reg *s, uint32_t mode)
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{
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signed char prev_rounding_mode;
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prev_rounding_mode = env->sse_status.float_rounding_mode;
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if (!(mode & (1 << 2)))
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switch (mode & 3) {
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case 0:
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set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
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break;
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case 1:
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set_float_rounding_mode(float_round_down, &env->sse_status);
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break;
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case 2:
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set_float_rounding_mode(float_round_up, &env->sse_status);
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break;
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case 3:
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set_float_rounding_mode(float_round_to_zero, &env->sse_status);
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break;
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}
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d->Q(0) = float64_round_to_int(s->Q(0), &env->sse_status);
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d->Q(1) = float64_round_to_int(s->Q(1), &env->sse_status);
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#if 0 /* TODO */
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if (mode & (1 << 3))
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set_float_exception_flags(
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get_float_exception_flags(&env->sse_status) &
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~float_flag_inexact,
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&env->sse_status);
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#endif
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env->sse_status.float_rounding_mode = prev_rounding_mode;
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}
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void glue(helper_roundss, SUFFIX) (Reg *d, Reg *s, uint32_t mode)
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{
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signed char prev_rounding_mode;
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prev_rounding_mode = env->sse_status.float_rounding_mode;
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if (!(mode & (1 << 2)))
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switch (mode & 3) {
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case 0:
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set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
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break;
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case 1:
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set_float_rounding_mode(float_round_down, &env->sse_status);
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break;
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case 2:
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set_float_rounding_mode(float_round_up, &env->sse_status);
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break;
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case 3:
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set_float_rounding_mode(float_round_to_zero, &env->sse_status);
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break;
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}
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d->L(0) = float64_round_to_int(s->L(0), &env->sse_status);
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#if 0 /* TODO */
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if (mode & (1 << 3))
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set_float_exception_flags(
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get_float_exception_flags(&env->sse_status) &
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~float_flag_inexact,
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&env->sse_status);
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#endif
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env->sse_status.float_rounding_mode = prev_rounding_mode;
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}
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void glue(helper_roundsd, SUFFIX) (Reg *d, Reg *s, uint32_t mode)
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{
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signed char prev_rounding_mode;
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prev_rounding_mode = env->sse_status.float_rounding_mode;
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if (!(mode & (1 << 2)))
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switch (mode & 3) {
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case 0:
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set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
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break;
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case 1:
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set_float_rounding_mode(float_round_down, &env->sse_status);
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break;
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case 2:
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set_float_rounding_mode(float_round_up, &env->sse_status);
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break;
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case 3:
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set_float_rounding_mode(float_round_to_zero, &env->sse_status);
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break;
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}
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d->Q(0) = float64_round_to_int(s->Q(0), &env->sse_status);
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#if 0 /* TODO */
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if (mode & (1 << 3))
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set_float_exception_flags(
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get_float_exception_flags(&env->sse_status) &
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~float_flag_inexact,
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&env->sse_status);
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#endif
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env->sse_status.float_rounding_mode = prev_rounding_mode;
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}
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#define FBLENDP(d, s, m) m ? s : d
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SSE_HELPER_I(helper_blendps, L, 4, FBLENDP)
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SSE_HELPER_I(helper_blendpd, Q, 2, FBLENDP)
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SSE_HELPER_I(helper_pblendw, W, 8, FBLENDP)
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void glue(helper_dpps, SUFFIX) (Reg *d, Reg *s, uint32_t mask)
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{
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float32 iresult = 0 /*float32_zero*/;
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if (mask & (1 << 4))
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iresult = float32_add(iresult,
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float32_mul(d->L(0), s->L(0), &env->sse_status),
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&env->sse_status);
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if (mask & (1 << 5))
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iresult = float32_add(iresult,
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float32_mul(d->L(1), s->L(1), &env->sse_status),
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&env->sse_status);
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if (mask & (1 << 6))
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iresult = float32_add(iresult,
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float32_mul(d->L(2), s->L(2), &env->sse_status),
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&env->sse_status);
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if (mask & (1 << 7))
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iresult = float32_add(iresult,
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float32_mul(d->L(3), s->L(3), &env->sse_status),
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&env->sse_status);
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d->L(0) = (mask & (1 << 0)) ? iresult : 0 /*float32_zero*/;
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d->L(1) = (mask & (1 << 1)) ? iresult : 0 /*float32_zero*/;
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d->L(2) = (mask & (1 << 2)) ? iresult : 0 /*float32_zero*/;
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d->L(3) = (mask & (1 << 3)) ? iresult : 0 /*float32_zero*/;
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}
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void glue(helper_dppd, SUFFIX) (Reg *d, Reg *s, uint32_t mask)
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{
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float64 iresult = 0 /*float64_zero*/;
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if (mask & (1 << 4))
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iresult = float64_add(iresult,
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float64_mul(d->Q(0), s->Q(0), &env->sse_status),
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&env->sse_status);
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if (mask & (1 << 5))
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iresult = float64_add(iresult,
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float64_mul(d->Q(1), s->Q(1), &env->sse_status),
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&env->sse_status);
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d->Q(0) = (mask & (1 << 0)) ? iresult : 0 /*float64_zero*/;
|
||||
d->Q(1) = (mask & (1 << 1)) ? iresult : 0 /*float64_zero*/;
|
||||
}
|
||||
|
||||
void glue(helper_mpsadbw, SUFFIX) (Reg *d, Reg *s, uint32_t offset)
|
||||
{
|
||||
int s0 = (offset & 3) << 2;
|
||||
int d0 = (offset & 4) << 0;
|
||||
int i;
|
||||
Reg r;
|
||||
|
||||
for (i = 0; i < 8; i++, d0++) {
|
||||
r.W(i) = 0;
|
||||
r.W(i) += abs1(d->B(d0 + 0) - s->B(s0 + 0));
|
||||
r.W(i) += abs1(d->B(d0 + 1) - s->B(s0 + 1));
|
||||
r.W(i) += abs1(d->B(d0 + 2) - s->B(s0 + 2));
|
||||
r.W(i) += abs1(d->B(d0 + 3) - s->B(s0 + 3));
|
||||
}
|
||||
|
||||
*d = r;
|
||||
}
|
||||
|
||||
/* SSE4.2 op helpers */
|
||||
/* it's unclear whether signed or unsigned */
|
||||
#define FCMPGTQ(d, s) d > s ? -1 : 0
|
||||
SSE_HELPER_Q(helper_pcmpgtq, FCMPGTQ)
|
||||
|
||||
static inline int pcmp_elen(int reg, uint32_t ctrl)
|
||||
{
|
||||
int val;
|
||||
|
||||
/* Presence of REX.W is indicated by a bit higher than 7 set */
|
||||
if (ctrl >> 8)
|
||||
val = abs1((int64_t) env->regs[reg]);
|
||||
else
|
||||
val = abs1((int32_t) env->regs[reg]);
|
||||
|
||||
if (ctrl & 1) {
|
||||
if (val > 8)
|
||||
return 8;
|
||||
} else
|
||||
if (val > 16)
|
||||
return 16;
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
static inline int pcmp_ilen(Reg *r, uint8_t ctrl)
|
||||
{
|
||||
int val = 0;
|
||||
|
||||
if (ctrl & 1) {
|
||||
while (val < 8 && r->W(val))
|
||||
val++;
|
||||
} else
|
||||
while (val < 16 && r->B(val))
|
||||
val++;
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
static inline int pcmp_val(Reg *r, uint8_t ctrl, int i)
|
||||
{
|
||||
switch ((ctrl >> 0) & 3) {
|
||||
case 0:
|
||||
return r->B(i);
|
||||
case 1:
|
||||
return r->W(i);
|
||||
case 2:
|
||||
return (int8_t) r->B(i);
|
||||
case 3:
|
||||
default:
|
||||
return (int16_t) r->W(i);
|
||||
}
|
||||
}
|
||||
|
||||
static inline unsigned pcmpxstrx(Reg *d, Reg *s,
|
||||
int8_t ctrl, int valids, int validd)
|
||||
{
|
||||
unsigned int res = 0;
|
||||
int v;
|
||||
int j, i;
|
||||
int upper = (ctrl & 1) ? 7 : 15;
|
||||
|
||||
valids--;
|
||||
validd--;
|
||||
|
||||
CC_SRC = (valids < upper ? CC_Z : 0) | (validd < upper ? CC_S : 0);
|
||||
|
||||
switch ((ctrl >> 2) & 3) {
|
||||
case 0:
|
||||
for (j = valids; j >= 0; j--) {
|
||||
res <<= 1;
|
||||
v = pcmp_val(s, ctrl, j);
|
||||
for (i = validd; i >= 0; i--)
|
||||
res |= (v == pcmp_val(d, ctrl, i));
|
||||
}
|
||||
break;
|
||||
case 1:
|
||||
for (j = valids; j >= 0; j--) {
|
||||
res <<= 1;
|
||||
v = pcmp_val(s, ctrl, j);
|
||||
for (i = ((validd - 1) | 1); i >= 0; i -= 2)
|
||||
res |= (pcmp_val(d, ctrl, i - 0) <= v &&
|
||||
pcmp_val(d, ctrl, i - 1) >= v);
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
res = (2 << (upper - MAX(valids, validd))) - 1;
|
||||
res <<= MAX(valids, validd) - MIN(valids, validd);
|
||||
for (i = MIN(valids, validd); i >= 0; i--) {
|
||||
res <<= 1;
|
||||
v = pcmp_val(s, ctrl, i);
|
||||
res |= (v == pcmp_val(d, ctrl, i));
|
||||
}
|
||||
break;
|
||||
case 3:
|
||||
for (j = valids - validd; j >= 0; j--) {
|
||||
res <<= 1;
|
||||
res |= 1;
|
||||
for (i = MIN(upper - j, validd); i >= 0; i--)
|
||||
res &= (pcmp_val(s, ctrl, i + j) == pcmp_val(d, ctrl, i));
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
switch ((ctrl >> 4) & 3) {
|
||||
case 1:
|
||||
res ^= (2 << upper) - 1;
|
||||
break;
|
||||
case 3:
|
||||
res ^= (2 << valids) - 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if (res)
|
||||
CC_SRC |= CC_C;
|
||||
if (res & 1)
|
||||
CC_SRC |= CC_O;
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static inline int rffs1(unsigned int val)
|
||||
{
|
||||
int ret = 1, hi;
|
||||
|
||||
for (hi = sizeof(val) * 4; hi; hi /= 2)
|
||||
if (val >> hi) {
|
||||
val >>= hi;
|
||||
ret += hi;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline int ffs1(unsigned int val)
|
||||
{
|
||||
int ret = 1, hi;
|
||||
|
||||
for (hi = sizeof(val) * 4; hi; hi /= 2)
|
||||
if (val << hi) {
|
||||
val <<= hi;
|
||||
ret += hi;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void glue(helper_pcmpestri, SUFFIX) (Reg *d, Reg *s, uint32_t ctrl)
|
||||
{
|
||||
unsigned int res = pcmpxstrx(d, s, ctrl,
|
||||
pcmp_elen(R_EDX, ctrl),
|
||||
pcmp_elen(R_EAX, ctrl));
|
||||
|
||||
if (res)
|
||||
env->regs[R_ECX] = ((ctrl & (1 << 6)) ? rffs1 : ffs1)(res) - 1;
|
||||
else
|
||||
env->regs[R_ECX] = 16 >> (ctrl & (1 << 0));
|
||||
}
|
||||
|
||||
void glue(helper_pcmpestrm, SUFFIX) (Reg *d, Reg *s, uint32_t ctrl)
|
||||
{
|
||||
int i;
|
||||
unsigned int res = pcmpxstrx(d, s, ctrl,
|
||||
pcmp_elen(R_EDX, ctrl),
|
||||
pcmp_elen(R_EAX, ctrl));
|
||||
|
||||
if ((ctrl >> 6) & 1) {
|
||||
if (ctrl & 1)
|
||||
for (i = 0; i <= 8; i--, res >>= 1)
|
||||
d->W(i) = (res & 1) ? ~0 : 0;
|
||||
else
|
||||
for (i = 0; i <= 16; i--, res >>= 1)
|
||||
d->B(i) = (res & 1) ? ~0 : 0;
|
||||
} else {
|
||||
d->Q(1) = 0;
|
||||
d->Q(0) = res;
|
||||
}
|
||||
}
|
||||
|
||||
void glue(helper_pcmpistri, SUFFIX) (Reg *d, Reg *s, uint32_t ctrl)
|
||||
{
|
||||
unsigned int res = pcmpxstrx(d, s, ctrl,
|
||||
pcmp_ilen(s, ctrl),
|
||||
pcmp_ilen(d, ctrl));
|
||||
|
||||
if (res)
|
||||
env->regs[R_ECX] = ((ctrl & (1 << 6)) ? rffs1 : ffs1)(res) - 1;
|
||||
else
|
||||
env->regs[R_ECX] = 16 >> (ctrl & (1 << 0));
|
||||
}
|
||||
|
||||
void glue(helper_pcmpistrm, SUFFIX) (Reg *d, Reg *s, uint32_t ctrl)
|
||||
{
|
||||
int i;
|
||||
unsigned int res = pcmpxstrx(d, s, ctrl,
|
||||
pcmp_ilen(s, ctrl),
|
||||
pcmp_ilen(d, ctrl));
|
||||
|
||||
if ((ctrl >> 6) & 1) {
|
||||
if (ctrl & 1)
|
||||
for (i = 0; i <= 8; i--, res >>= 1)
|
||||
d->W(i) = (res & 1) ? ~0 : 0;
|
||||
else
|
||||
for (i = 0; i <= 16; i--, res >>= 1)
|
||||
d->B(i) = (res & 1) ? ~0 : 0;
|
||||
} else {
|
||||
d->Q(1) = 0;
|
||||
d->Q(0) = res;
|
||||
}
|
||||
}
|
||||
|
||||
#define CRCPOLY 0x1edc6f41
|
||||
#define CRCPOLY_BITREV 0x82f63b78
|
||||
target_ulong helper_crc32(uint32_t crc1, target_ulong msg, uint32_t len)
|
||||
{
|
||||
target_ulong crc = (msg & ((target_ulong) -1 >>
|
||||
(TARGET_LONG_BITS - len))) ^ crc1;
|
||||
|
||||
while (len--)
|
||||
crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_BITREV : 0);
|
||||
|
||||
return crc;
|
||||
}
|
||||
|
||||
#define POPMASK(i) ((target_ulong) -1 / ((1LL << (1 << i)) + 1))
|
||||
#define POPCOUNT(n, i) (n & POPMASK(i)) + ((n >> (1 << i)) & POPMASK(i))
|
||||
target_ulong helper_popcnt(target_ulong n, uint32_t type)
|
||||
{
|
||||
CC_SRC = n ? 0 : CC_Z;
|
||||
|
||||
n = POPCOUNT(n, 0);
|
||||
n = POPCOUNT(n, 1);
|
||||
n = POPCOUNT(n, 2);
|
||||
n = POPCOUNT(n, 3);
|
||||
if (type == 1)
|
||||
return n & 0xff;
|
||||
|
||||
n = POPCOUNT(n, 4);
|
||||
#ifndef TARGET_X86_64
|
||||
return n;
|
||||
#else
|
||||
if (type == 2)
|
||||
return n & 0xff;
|
||||
|
||||
return POPCOUNT(n, 5);
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
#undef SHIFT
|
||||
#undef XMM_ONLY
|
||||
#undef Reg
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue