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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] x86emul: handle AVX512-FP16 Map6 misc insns
commit 520f0acc7ad104ebb5c5a6e2e575c204f7ba6248
Author: Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Jun 5 14:58:25 2023 +0200
Commit: Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Jun 5 14:58:25 2023 +0200
x86emul: handle AVX512-FP16 Map6 misc insns
While, as before, this leverages that the Map6 encoding space is a very
sparse clone of the "0f38" one, switch around the simd_size overriding
for opcode 2D. This way fewer separate overrides are needed.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
tools/tests/x86_emulator/evex-disp8.c | 8 ++++++++
tools/tests/x86_emulator/predicates.c | 8 ++++++++
xen/arch/x86/x86_emulate/decode.c | 6 +++---
xen/arch/x86/x86_emulate/x86_emulate.c | 17 +++++++++++++++++
4 files changed, 36 insertions(+), 3 deletions(-)
diff --git a/tools/tests/x86_emulator/evex-disp8.c
b/tools/tests/x86_emulator/evex-disp8.c
index de4daddc5f..137b88a325 100644
--- a/tools/tests/x86_emulator/evex-disp8.c
+++ b/tools/tests/x86_emulator/evex-disp8.c
@@ -646,6 +646,8 @@ static const struct test avx512_fp16_all[] = {
INSN(fnmsub231sh, 66, map6, bf, el, fp16, el),
INSN(fpclassph, , 0f3a, 66, vl, fp16, vl),
INSN(fpclasssh, , 0f3a, 67, el, fp16, el),
+ INSN(getexpph, 66, map6, 42, vl, fp16, vl),
+ INSN(getexpsh, 66, map6, 43, el, fp16, el),
INSN(getmantph, , 0f3a, 26, vl, fp16, vl),
INSN(getmantsh, , 0f3a, 27, el, fp16, el),
INSN(maxph, , map5, 5f, vl, fp16, vl),
@@ -656,10 +658,16 @@ static const struct test avx512_fp16_all[] = {
INSN(movsh, f3, map5, 11, el, fp16, el),
INSN(mulph, , map5, 59, vl, fp16, vl),
INSN(mulsh, f3, map5, 59, el, fp16, el),
+ INSN(rcpph, 66, map6, 4c, vl, fp16, vl),
+ INSN(rcpsh, 66, map6, 4d, el, fp16, el),
INSN(reduceph, , 0f3a, 56, vl, fp16, vl),
INSN(reducesh, , 0f3a, 57, el, fp16, el),
INSN(rndscaleph, , 0f3a, 08, vl, fp16, vl),
INSN(rndscalesh, , 0f3a, 0a, el, fp16, el),
+ INSN(rsqrtph, 66, map6, 4e, vl, fp16, vl),
+ INSN(rsqrtsh, 66, map6, 4f, el, fp16, el),
+ INSN(scalefph, 66, map6, 2c, vl, fp16, vl),
+ INSN(scalefsh, 66, map6, 2d, el, fp16, el),
INSN(sqrtph, , map5, 51, vl, fp16, vl),
INSN(sqrtsh, f3, map5, 51, el, fp16, el),
INSN(subph, , map5, 5c, vl, fp16, vl),
diff --git a/tools/tests/x86_emulator/predicates.c
b/tools/tests/x86_emulator/predicates.c
index 2fff04635e..a9d0a2af12 100644
--- a/tools/tests/x86_emulator/predicates.c
+++ b/tools/tests/x86_emulator/predicates.c
@@ -2066,6 +2066,14 @@ static const struct evex {
{ { 0x6e }, 2, T, R, pfx_66, WIG, L0 }, /* vmovw */
{ { 0x7e }, 2, T, W, pfx_66, WIG, L0 }, /* vmovw */
}, evex_map6[] = {
+ { { 0x2c }, 2, T, R, pfx_66, W0, Ln }, /* vscalefph */
+ { { 0x2d }, 2, T, R, pfx_66, W0, LIG }, /* vscalefsh */
+ { { 0x42 }, 2, T, R, pfx_66, W0, Ln }, /* vgetexpph */
+ { { 0x43 }, 2, T, R, pfx_66, W0, LIG }, /* vgetexpsh */
+ { { 0x4c }, 2, T, R, pfx_66, W0, Ln }, /* vrcpph */
+ { { 0x4d }, 2, T, R, pfx_66, W0, LIG }, /* vrcpsh */
+ { { 0x4e }, 2, T, R, pfx_66, W0, Ln }, /* vrsqrtph */
+ { { 0x4f }, 2, T, R, pfx_66, W0, LIG }, /* vrsqrtsh */
{ { 0x96 }, 2, T, R, pfx_66, W0, Ln }, /* vfmaddsub132ph */
{ { 0x97 }, 2, T, R, pfx_66, W0, Ln }, /* vfmsubadd132ph */
{ { 0x98 }, 2, T, R, pfx_66, W0, Ln }, /* vfmadd132ph */
diff --git a/xen/arch/x86/x86_emulate/decode.c
b/xen/arch/x86/x86_emulate/decode.c
index 9f68ac299d..9d9bc75f3b 100644
--- a/xen/arch/x86/x86_emulate/decode.c
+++ b/xen/arch/x86/x86_emulate/decode.c
@@ -346,7 +346,7 @@ static const struct ext0f38_table {
[0x2a] = { .simd_size = simd_packed_int, .two_op = 1, .d8s = d8s_vl },
[0x2b] = { .simd_size = simd_packed_int, .d8s = d8s_vl },
[0x2c] = { .simd_size = simd_packed_fp, .d8s = d8s_vl },
- [0x2d] = { .simd_size = simd_packed_fp, .d8s = d8s_dq },
+ [0x2d] = { .simd_size = simd_scalar_vexw, .d8s = d8s_dq },
[0x2e ... 0x2f] = { .simd_size = simd_packed_fp, .to_mem = 1 },
[0x30] = { .simd_size = simd_other, .two_op = 1, .d8s = d8s_vl_by_2 },
[0x31] = { .simd_size = simd_other, .two_op = 1, .d8s = d8s_vl_by_4 },
@@ -899,8 +899,8 @@ decode_0f38(struct x86_emulate_state *s,
ctxt->opcode |= MASK_INSR(s->vex.pfx, X86EMUL_OPC_PFX_MASK);
break;
- case X86EMUL_OPC_EVEX_66(0, 0x2d): /* vscalefs{s,d} */
- s->simd_size = simd_scalar_vexw;
+ case X86EMUL_OPC_VEX_66(0, 0x2d): /* vmaskmovpd */
+ s->simd_size = simd_packed_fp;
break;
case X86EMUL_OPC_EVEX_66(0, 0x7a): /* vpbroadcastb */
diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c
b/xen/arch/x86/x86_emulate/x86_emulate.c
index 8fb695c464..905a3dc432 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -7781,6 +7781,8 @@ x86_emulate(
generate_exception_if(evex.w, X86_EXC_UD);
goto avx512f_all_fp;
+ case X86EMUL_OPC_EVEX_66(6, 0x2c): /* vscalefph
[xyz]mm/mem,[xyz]mm,[xyz]mm{k} */
+ case X86EMUL_OPC_EVEX_66(6, 0x42): /* vgetexpph [xyz]mm/mem,[xyz]mm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x96): /* vfmaddsub132ph
[xyz]mm/mem,[xyz]mm,[xyz]mm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x97): /* vfmsubadd132ph
[xyz]mm/mem,[xyz]mm,[xyz]mm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x98): /* vfmadd132ph
[xyz]mm/mem,[xyz]mm,[xyz]mm{k} */
@@ -7805,6 +7807,8 @@ x86_emulate(
avx512_vlen_check(false);
goto simd_zmm;
+ case X86EMUL_OPC_EVEX_66(6, 0x2d): /* vscalefsh xmm/m16,xmm,xmm{k} */
+ case X86EMUL_OPC_EVEX_66(6, 0x43): /* vgetexpsh xmm/m16,xmm,xmm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x99): /* vfmadd132sh xmm/m16,xmm,xmm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x9b): /* vfmsub132sh xmm/m16,xmm,xmm{k} */
case X86EMUL_OPC_EVEX_66(6, 0x9d): /* vfnmadd132sh xmm/m16,xmm,xmm{k} */
@@ -7824,6 +7828,19 @@ x86_emulate(
avx512_vlen_check(true);
goto simd_zmm;
+ case X86EMUL_OPC_EVEX_66(6, 0x4c): /* vrcpph [xyz]mm/mem,[xyz]mm{k} */
+ case X86EMUL_OPC_EVEX_66(6, 0x4e): /* vrsqrtph [xyz]mm/mem,[xyz]mm{k} */
+ host_and_vcpu_must_have(avx512_fp16);
+ generate_exception_if(evex.w, X86_EXC_UD);
+ goto avx512f_no_sae;
+
+ case X86EMUL_OPC_EVEX_66(6, 0x4d): /* vrcpsh xmm/m16,xmm,xmm{k} */
+ case X86EMUL_OPC_EVEX_66(6, 0x4f): /* vrsqrtsh xmm/m16,xmm,xmm{k} */
+ host_and_vcpu_must_have(avx512_fp16);
+ generate_exception_if(evex.w || evex.brs, X86_EXC_UD);
+ avx512_vlen_check(true);
+ goto simd_zmm;
+
case X86EMUL_OPC_XOP(08, 0x85): /* vpmacssww xmm,xmm/m128,xmm,xmm */
case X86EMUL_OPC_XOP(08, 0x86): /* vpmacsswd xmm,xmm/m128,xmm,xmm */
case X86EMUL_OPC_XOP(08, 0x87): /* vpmacssdql xmm,xmm/m128,xmm,xmm */
--
generated by git-patchbot for /home/xen/git/xen.git#master
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