target/i386: implement F16C instructions
F16C only consists of two instructions, which are a bit peculiar nevertheless. First, they access only the low half of an YMM or XMM register for the packed-half operand; the exact size still depends on the VEX.L flag. This is similar to the existing avx_movx flag, but not exactly because avx_movx is hardcoded to affect operand 2. To this end I added a "ph" format name; it's possible to reuse this approach for the VPMOVSX and VPMOVZX instructions, though that would also require adding two more formats for the low-quarter and low-eighth of an operand. Second, VCVTPS2PH is somewhat weird because it *stores* the result of the instruction into memory rather than loading it. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -625,13 +625,12 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
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CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \
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CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \
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CPUID_EXT_XSAVE | /* CPUID_EXT_OSXSAVE is dynamic */ \
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CPUID_EXT_XSAVE | /* CPUID_EXT_OSXSAVE is dynamic */ \
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CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR | \
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CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR | \
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CPUID_EXT_RDRAND | CPUID_EXT_AVX)
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CPUID_EXT_RDRAND | CPUID_EXT_AVX | CPUID_EXT_F16C)
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/* missing:
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/* missing:
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CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_SMX,
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CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_SMX,
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CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID, CPUID_EXT_FMA,
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CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID, CPUID_EXT_FMA,
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CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_PCID, CPUID_EXT_DCA,
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CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_PCID, CPUID_EXT_DCA,
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CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER,
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CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER */
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CPUID_EXT_F16C */
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#ifdef TARGET_X86_64
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#ifdef TARGET_X86_64
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#define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM)
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#define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM)
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@ -1258,6 +1258,7 @@ typedef union ZMMReg {
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uint16_t _w_ZMMReg[512 / 16];
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uint16_t _w_ZMMReg[512 / 16];
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uint32_t _l_ZMMReg[512 / 32];
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uint32_t _l_ZMMReg[512 / 32];
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uint64_t _q_ZMMReg[512 / 64];
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uint64_t _q_ZMMReg[512 / 64];
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float16 _h_ZMMReg[512 / 16];
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float32 _s_ZMMReg[512 / 32];
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float32 _s_ZMMReg[512 / 32];
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float64 _d_ZMMReg[512 / 64];
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float64 _d_ZMMReg[512 / 64];
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XMMReg _x_ZMMReg[512 / 128];
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XMMReg _x_ZMMReg[512 / 128];
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@ -1282,6 +1283,7 @@ typedef struct BNDCSReg {
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#define ZMM_B(n) _b_ZMMReg[63 - (n)]
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#define ZMM_B(n) _b_ZMMReg[63 - (n)]
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#define ZMM_W(n) _w_ZMMReg[31 - (n)]
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#define ZMM_W(n) _w_ZMMReg[31 - (n)]
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#define ZMM_L(n) _l_ZMMReg[15 - (n)]
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#define ZMM_L(n) _l_ZMMReg[15 - (n)]
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#define ZMM_H(n) _h_ZMMReg[31 - (n)]
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#define ZMM_S(n) _s_ZMMReg[15 - (n)]
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#define ZMM_S(n) _s_ZMMReg[15 - (n)]
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#define ZMM_Q(n) _q_ZMMReg[7 - (n)]
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#define ZMM_Q(n) _q_ZMMReg[7 - (n)]
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#define ZMM_D(n) _d_ZMMReg[7 - (n)]
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#define ZMM_D(n) _d_ZMMReg[7 - (n)]
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@ -1301,6 +1303,7 @@ typedef struct BNDCSReg {
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#define ZMM_B(n) _b_ZMMReg[n]
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#define ZMM_B(n) _b_ZMMReg[n]
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#define ZMM_W(n) _w_ZMMReg[n]
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#define ZMM_W(n) _w_ZMMReg[n]
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#define ZMM_L(n) _l_ZMMReg[n]
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#define ZMM_L(n) _l_ZMMReg[n]
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#define ZMM_H(n) _h_ZMMReg[n]
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#define ZMM_S(n) _s_ZMMReg[n]
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#define ZMM_S(n) _s_ZMMReg[n]
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#define ZMM_Q(n) _q_ZMMReg[n]
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#define ZMM_Q(n) _q_ZMMReg[n]
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#define ZMM_D(n) _d_ZMMReg[n]
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#define ZMM_D(n) _d_ZMMReg[n]
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@ -586,6 +586,35 @@ void glue(helper_cvtpd2ps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
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}
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}
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}
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}
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#if SHIFT >= 1
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void glue(helper_cvtph2ps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
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{
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int i;
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for (i = 2 << SHIFT; --i >= 0; ) {
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d->ZMM_S(i) = float16_to_float32(s->ZMM_H(i), true, &env->sse_status);
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}
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}
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void glue(helper_cvtps2ph, SUFFIX)(CPUX86State *env, Reg *d, Reg *s, int mode)
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{
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int i;
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FloatRoundMode prev_rounding_mode = env->sse_status.float_rounding_mode;
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if (!(mode & (1 << 2))) {
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set_x86_rounding_mode(mode & 3, &env->sse_status);
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}
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for (i = 0; i < 2 << SHIFT; i++) {
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d->ZMM_H(i) = float32_to_float16(s->ZMM_S(i), true, &env->sse_status);
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}
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for (i >>= 2; i < 1 << SHIFT; i++) {
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d->Q(i) = 0;
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}
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env->sse_status.float_rounding_mode = prev_rounding_mode;
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}
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#endif
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#if SHIFT == 1
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#if SHIFT == 1
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void helper_cvtss2sd(CPUX86State *env, Reg *d, Reg *v, Reg *s)
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void helper_cvtss2sd(CPUX86State *env, Reg *d, Reg *v, Reg *s)
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{
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{
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@ -353,6 +353,12 @@ DEF_HELPER_4(glue(aeskeygenassist, SUFFIX), void, env, Reg, Reg, i32)
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DEF_HELPER_5(glue(pclmulqdq, SUFFIX), void, env, Reg, Reg, Reg, i32)
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DEF_HELPER_5(glue(pclmulqdq, SUFFIX), void, env, Reg, Reg, Reg, i32)
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#endif
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#endif
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/* F16C helpers */
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#if SHIFT >= 1
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DEF_HELPER_3(glue(cvtph2ps, SUFFIX), void, env, Reg, Reg)
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DEF_HELPER_4(glue(cvtps2ph, SUFFIX), void, env, Reg, Reg, int)
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#endif
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/* AVX helpers */
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/* AVX helpers */
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#if SHIFT >= 1
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#if SHIFT >= 1
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DEF_HELPER_4(glue(vpermilpd, SUFFIX), void, env, Reg, Reg, Reg)
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DEF_HELPER_4(glue(vpermilpd, SUFFIX), void, env, Reg, Reg, Reg)
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@ -336,6 +336,7 @@ static const X86OpEntry opcodes_0F38_00toEF[240] = {
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[0x07] = X86_OP_ENTRY3(PHSUBSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
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[0x07] = X86_OP_ENTRY3(PHSUBSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
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[0x10] = X86_OP_ENTRY2(PBLENDVB, V,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
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[0x10] = X86_OP_ENTRY2(PBLENDVB, V,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
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[0x13] = X86_OP_ENTRY2(VCVTPH2PS, V,x, W,ph, vex11 cpuid(F16C) p_66),
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[0x14] = X86_OP_ENTRY2(BLENDVPS, V,x, W,x, vex4 cpuid(SSE41) p_66),
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[0x14] = X86_OP_ENTRY2(BLENDVPS, V,x, W,x, vex4 cpuid(SSE41) p_66),
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[0x15] = X86_OP_ENTRY2(BLENDVPD, V,x, W,x, vex4 cpuid(SSE41) p_66),
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[0x15] = X86_OP_ENTRY2(BLENDVPD, V,x, W,x, vex4 cpuid(SSE41) p_66),
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/* Listed incorrectly as type 4 */
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/* Listed incorrectly as type 4 */
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@ -525,6 +526,7 @@ static const X86OpEntry opcodes_0F3A[256] = {
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[0x15] = X86_OP_ENTRY3(PEXTRW, E,w, V,dq, I,b, vex5 cpuid(SSE41) zext0 p_66),
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[0x15] = X86_OP_ENTRY3(PEXTRW, E,w, V,dq, I,b, vex5 cpuid(SSE41) zext0 p_66),
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[0x16] = X86_OP_ENTRY3(PEXTR, E,y, V,dq, I,b, vex5 cpuid(SSE41) p_66),
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[0x16] = X86_OP_ENTRY3(PEXTR, E,y, V,dq, I,b, vex5 cpuid(SSE41) p_66),
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[0x17] = X86_OP_ENTRY3(VEXTRACTPS, E,d, V,dq, I,b, vex5 cpuid(SSE41) p_66),
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[0x17] = X86_OP_ENTRY3(VEXTRACTPS, E,d, V,dq, I,b, vex5 cpuid(SSE41) p_66),
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[0x1d] = X86_OP_ENTRY3(VCVTPS2PH, W,ph, V,x, I,b, vex11 cpuid(F16C) p_66),
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[0x20] = X86_OP_ENTRY4(PINSRB, V,dq, H,dq, E,b, vex5 cpuid(SSE41) zext2 p_66),
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[0x20] = X86_OP_ENTRY4(PINSRB, V,dq, H,dq, E,b, vex5 cpuid(SSE41) zext2 p_66),
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[0x21] = X86_OP_GROUP0(VINSERTPS),
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[0x21] = X86_OP_GROUP0(VINSERTPS),
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@ -1051,6 +1053,10 @@ static bool decode_op_size(DisasContext *s, X86OpEntry *e, X86OpSize size, MemOp
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*ot = s->vex_l ? MO_256 : MO_128;
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*ot = s->vex_l ? MO_256 : MO_128;
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return true;
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return true;
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case X86_SIZE_ph: /* SSE/AVX packed half precision */
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*ot = s->vex_l ? MO_128 : MO_64;
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return true;
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case X86_SIZE_d64: /* Default to 64-bit in 64-bit mode */
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case X86_SIZE_d64: /* Default to 64-bit in 64-bit mode */
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*ot = CODE64(s) && s->dflag == MO_32 ? MO_64 : s->dflag;
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*ot = CODE64(s) && s->dflag == MO_32 ? MO_64 : s->dflag;
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return true;
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return true;
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@ -1342,6 +1348,8 @@ static bool has_cpuid_feature(DisasContext *s, X86CPUIDFeature cpuid)
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switch (cpuid) {
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switch (cpuid) {
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case X86_FEAT_None:
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case X86_FEAT_None:
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return true;
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return true;
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case X86_FEAT_F16C:
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return (s->cpuid_ext_features & CPUID_EXT_F16C);
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case X86_FEAT_MOVBE:
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case X86_FEAT_MOVBE:
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return (s->cpuid_ext_features & CPUID_EXT_MOVBE);
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return (s->cpuid_ext_features & CPUID_EXT_MOVBE);
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case X86_FEAT_PCLMULQDQ:
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case X86_FEAT_PCLMULQDQ:
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@ -92,6 +92,7 @@ typedef enum X86OpSize {
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/* Custom */
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/* Custom */
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X86_SIZE_d64,
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X86_SIZE_d64,
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X86_SIZE_f64,
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X86_SIZE_f64,
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X86_SIZE_ph, /* SSE/AVX packed half precision */
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} X86OpSize;
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} X86OpSize;
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typedef enum X86CPUIDFeature {
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typedef enum X86CPUIDFeature {
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@ -103,6 +104,7 @@ typedef enum X86CPUIDFeature {
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X86_FEAT_AVX2,
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X86_FEAT_AVX2,
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X86_FEAT_BMI1,
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X86_FEAT_BMI1,
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X86_FEAT_BMI2,
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X86_FEAT_BMI2,
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X86_FEAT_F16C,
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X86_FEAT_MOVBE,
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X86_FEAT_MOVBE,
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X86_FEAT_PCLMULQDQ,
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X86_FEAT_PCLMULQDQ,
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X86_FEAT_SSE,
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X86_FEAT_SSE,
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@ -296,7 +296,7 @@ static void gen_writeback(DisasContext *s, X86DecodedInsn *decode, int opn, TCGv
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case X86_OP_MMX:
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case X86_OP_MMX:
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break;
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break;
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case X86_OP_SSE:
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case X86_OP_SSE:
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if (!op->has_ea && (s->prefix & PREFIX_VEX) && op->ot == MO_128) {
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if (!op->has_ea && (s->prefix & PREFIX_VEX) && op->ot <= MO_128) {
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tcg_gen_gvec_dup_imm(MO_64,
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tcg_gen_gvec_dup_imm(MO_64,
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offsetof(CPUX86State, xmm_regs[op->n].ZMM_X(1)),
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offsetof(CPUX86State, xmm_regs[op->n].ZMM_X(1)),
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16, 16, 0);
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16, 16, 0);
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@ -852,6 +852,7 @@ UNARY_INT_SSE(VCVTTPD2DQ, cvttpd2dq)
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UNARY_INT_SSE(VCVTDQ2PS, cvtdq2ps)
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UNARY_INT_SSE(VCVTDQ2PS, cvtdq2ps)
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UNARY_INT_SSE(VCVTPS2DQ, cvtps2dq)
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UNARY_INT_SSE(VCVTPS2DQ, cvtps2dq)
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UNARY_INT_SSE(VCVTTPS2DQ, cvttps2dq)
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UNARY_INT_SSE(VCVTTPS2DQ, cvttps2dq)
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UNARY_INT_SSE(VCVTPH2PS, cvtph2ps)
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static inline void gen_unary_imm_sse(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
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static inline void gen_unary_imm_sse(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
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@ -1868,6 +1869,20 @@ static void gen_VCVTfp2fp(DisasContext *s, CPUX86State *env, X86DecodedInsn *dec
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gen_helper_cvtsd2ss, gen_helper_cvtss2sd);
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gen_helper_cvtsd2ss, gen_helper_cvtss2sd);
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}
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}
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static void gen_VCVTPS2PH(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
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{
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gen_unary_imm_fp_sse(s, env, decode,
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gen_helper_cvtps2ph_xmm,
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gen_helper_cvtps2ph_ymm);
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/*
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* VCVTPS2PH is the only instruction that performs an operation on a
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* register source and then *stores* into memory.
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*/
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if (decode->op[0].has_ea) {
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gen_store_sse(s, decode, decode->op[0].offset);
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}
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}
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static void gen_VCVTSI2Sx(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
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static void gen_VCVTSI2Sx(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
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{
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{
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int vec_len = vector_len(s, decode);
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int vec_len = vector_len(s, decode);
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@ -28,6 +28,7 @@ typedef struct {
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} TestDef;
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} TestDef;
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reg_state initI;
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reg_state initI;
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reg_state initF16;
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reg_state initF32;
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reg_state initF32;
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reg_state initF64;
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reg_state initF64;
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@ -221,6 +222,7 @@ static void run_all(void)
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#define ARRAY_LEN(x) (sizeof(x) / sizeof(x[0]))
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#define ARRAY_LEN(x) (sizeof(x) / sizeof(x[0]))
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uint16_t val_f16[] = { 0x4000, 0xbc00, 0x44cd, 0x3a66, 0x4200, 0x7a1a, 0x4780, 0x4826 };
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float val_f32[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5, 8.3};
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float val_f32[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5, 8.3};
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double val_f64[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5};
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double val_f64[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5};
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v4di val_i64[] = {
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v4di val_i64[] = {
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@ -241,6 +243,12 @@ v4di indexd = {0x00000002000000efull, 0xfffffff500000010ull,
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v4di gather_mem[0x20];
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v4di gather_mem[0x20];
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void init_f16reg(v4di *r)
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{
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memset(r, 0, sizeof(*r));
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memcpy(r, val_f16, sizeof(val_f16));
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}
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void init_f32reg(v4di *r)
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void init_f32reg(v4di *r)
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{
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{
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static int n;
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static int n;
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@ -315,6 +323,15 @@ int main(int argc, char *argv[])
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printf("Int:\n");
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printf("Int:\n");
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dump_regs(&initI);
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dump_regs(&initI);
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init_all(&initF16);
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init_f16reg(&initF16.ymm[10]);
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init_f16reg(&initF16.ymm[11]);
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init_f16reg(&initF16.ymm[12]);
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||||||
|
init_f16reg(&initF16.mem0[1]);
|
||||||
|
initF16.ff = 16;
|
||||||
|
printf("F16:\n");
|
||||||
|
dump_regs(&initF16);
|
||||||
|
|
||||||
init_all(&initF32);
|
init_all(&initF32);
|
||||||
init_f32reg(&initF32.ymm[10]);
|
init_f32reg(&initF32.ymm[10]);
|
||||||
init_f32reg(&initF32.ymm[11]);
|
init_f32reg(&initF32.ymm[11]);
|
||||||
|
|
|
@ -9,6 +9,7 @@ from fnmatch import fnmatch
|
||||||
archs = [
|
archs = [
|
||||||
"SSE", "SSE2", "SSE3", "SSSE3", "SSE4_1", "SSE4_2",
|
"SSE", "SSE2", "SSE3", "SSSE3", "SSE4_1", "SSE4_2",
|
||||||
"AES", "AVX", "AVX2", "AES+AVX", "VAES+AVX",
|
"AES", "AVX", "AVX2", "AES+AVX", "VAES+AVX",
|
||||||
|
"F16C",
|
||||||
]
|
]
|
||||||
|
|
||||||
ignore = set(["FISTTP",
|
ignore = set(["FISTTP",
|
||||||
|
@ -19,6 +20,7 @@ imask = {
|
||||||
'vBLENDPS': 0x0f,
|
'vBLENDPS': 0x0f,
|
||||||
'CMP[PS][SD]': 0x07,
|
'CMP[PS][SD]': 0x07,
|
||||||
'VCMP[PS][SD]': 0x1f,
|
'VCMP[PS][SD]': 0x1f,
|
||||||
|
'vCVTPS2PH': 0x7,
|
||||||
'vDPPD': 0x33,
|
'vDPPD': 0x33,
|
||||||
'vDPPS': 0xff,
|
'vDPPS': 0xff,
|
||||||
'vEXTRACTPS': 0x03,
|
'vEXTRACTPS': 0x03,
|
||||||
|
@ -221,8 +223,10 @@ def ArgGenerator(arg, op):
|
||||||
class InsnGenerator:
|
class InsnGenerator:
|
||||||
def __init__(self, op, args):
|
def __init__(self, op, args):
|
||||||
self.op = op
|
self.op = op
|
||||||
if op[-2:] in ["PS", "PD", "SS", "SD"]:
|
if op[-2:] in ["PH", "PS", "PD", "SS", "SD"]:
|
||||||
if op[-1] == 'S':
|
if op[-1] == 'H':
|
||||||
|
self.optype = 'F16'
|
||||||
|
elif op[-1] == 'S':
|
||||||
self.optype = 'F32'
|
self.optype = 'F32'
|
||||||
else:
|
else:
|
||||||
self.optype = 'F64'
|
self.optype = 'F64'
|
||||||
|
|
Loading…
Reference in New Issue