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From: "Jan Beulich" <JBeulich@suse.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: [PATCH 5/8] x86emul: support {,V}{,U}COMIS{S,D}
Date: Wed, 25 Jan 2017 08:05:51 -0700	[thread overview]
Message-ID: <5888CCDF0200007800133DB7@prv-mh.provo.novell.com> (raw)
In-Reply-To: <5888C9110200007800133D98@prv-mh.provo.novell.com>

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Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -256,7 +256,7 @@ static const struct {
     [0x2a] = { DstImplicit|SrcMem|ModRM, simd_other },
     [0x2b] = { DstMem|SrcImplicit|ModRM|Mov, simd_any_fp },
     [0x2c ... 0x2d] = { DstImplicit|SrcMem|ModRM, simd_other },
-    [0x2e ... 0x2f] = { ImplicitOps|ModRM },
+    [0x2e ... 0x2f] = { ImplicitOps|ModRM|TwoOp },
     [0x30] = { ImplicitOps },
     [0x31] = { ImplicitOps },
     [0x32] = { ImplicitOps },
@@ -5501,6 +5501,54 @@ x86_emulate(
         state->simd_size = simd_none;
         break;
 
+    CASE_SIMD_PACKED_FP(, 0x0f, 0x2e):     /* ucomis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(_VEX, 0x0f, 0x2e): /* vucomis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(, 0x0f, 0x2f):     /* comis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(_VEX, 0x0f, 0x2f): /* vcomis{s,d} xmm/mem,xmm */
+        if ( vex.opcx == vex_none )
+        {
+            if ( vex.pfx )
+                vcpu_must_have(sse2);
+            else
+                vcpu_must_have(sse);
+            get_fpu(X86EMUL_FPU_xmm, &fic);
+        }
+        else
+        {
+            generate_exception_if(vex.reg != 0xf, EXC_UD);
+            fail_if(vex.l);
+            host_and_vcpu_must_have(avx);
+            get_fpu(X86EMUL_FPU_ymm, &fic);
+        }
+
+        opc = init_prefixes(stub);
+        opc[0] = b;
+        opc[1] = modrm;
+        if ( ea.type == OP_MEM )
+        {
+            rc = ops->read(ea.mem.seg, ea.mem.off, mmvalp, vex.pfx ? 8 : 4,
+                           ctxt);
+            if ( rc != X86EMUL_OKAY )
+                goto done;
+
+            /* Convert memory operand to (%rAX). */
+            rex_prefix &= ~REX_B;
+            vex.b = 1;
+            opc[1] &= 0x38;
+        }
+        fic.insn_bytes = PFX_BYTES + 2;
+
+        invoke_stub(_PRE_EFLAGS("[eflags]", "[mask]", "[tmp]"),
+                    _POST_EFLAGS("[eflags]", "[mask]", "[tmp]"),
+                    [eflags] "+g" (_regs._eflags),
+                    [tmp] "=&r" (cr4), "+m" (*mmvalp)
+                    : [func] "rm" (stub.func), "a" (mmvalp),
+                      [mask] "i" (EFLAGS_MASK));
+
+        put_stub(stub);
+        put_fpu(&fic);
+        break;
+
     case X86EMUL_OPC(0x0f, 0x30): /* wrmsr */
         generate_exception_if(!mode_ring0(), EXC_GP, 0);
         fail_if(ops->write_msr == NULL);




[-- Attachment #2: x86emul-SSE-AVX-0f-comis.patch --]
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x86emul: support {,V}{,U}COMIS{S,D}

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -256,7 +256,7 @@ static const struct {
     [0x2a] = { DstImplicit|SrcMem|ModRM, simd_other },
     [0x2b] = { DstMem|SrcImplicit|ModRM|Mov, simd_any_fp },
     [0x2c ... 0x2d] = { DstImplicit|SrcMem|ModRM, simd_other },
-    [0x2e ... 0x2f] = { ImplicitOps|ModRM },
+    [0x2e ... 0x2f] = { ImplicitOps|ModRM|TwoOp },
     [0x30] = { ImplicitOps },
     [0x31] = { ImplicitOps },
     [0x32] = { ImplicitOps },
@@ -5501,6 +5501,54 @@ x86_emulate(
         state->simd_size = simd_none;
         break;
 
+    CASE_SIMD_PACKED_FP(, 0x0f, 0x2e):     /* ucomis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(_VEX, 0x0f, 0x2e): /* vucomis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(, 0x0f, 0x2f):     /* comis{s,d} xmm/mem,xmm */
+    CASE_SIMD_PACKED_FP(_VEX, 0x0f, 0x2f): /* vcomis{s,d} xmm/mem,xmm */
+        if ( vex.opcx == vex_none )
+        {
+            if ( vex.pfx )
+                vcpu_must_have(sse2);
+            else
+                vcpu_must_have(sse);
+            get_fpu(X86EMUL_FPU_xmm, &fic);
+        }
+        else
+        {
+            generate_exception_if(vex.reg != 0xf, EXC_UD);
+            fail_if(vex.l);
+            host_and_vcpu_must_have(avx);
+            get_fpu(X86EMUL_FPU_ymm, &fic);
+        }
+
+        opc = init_prefixes(stub);
+        opc[0] = b;
+        opc[1] = modrm;
+        if ( ea.type == OP_MEM )
+        {
+            rc = ops->read(ea.mem.seg, ea.mem.off, mmvalp, vex.pfx ? 8 : 4,
+                           ctxt);
+            if ( rc != X86EMUL_OKAY )
+                goto done;
+
+            /* Convert memory operand to (%rAX). */
+            rex_prefix &= ~REX_B;
+            vex.b = 1;
+            opc[1] &= 0x38;
+        }
+        fic.insn_bytes = PFX_BYTES + 2;
+
+        invoke_stub(_PRE_EFLAGS("[eflags]", "[mask]", "[tmp]"),
+                    _POST_EFLAGS("[eflags]", "[mask]", "[tmp]"),
+                    [eflags] "+g" (_regs._eflags),
+                    [tmp] "=&r" (cr4), "+m" (*mmvalp)
+                    : [func] "rm" (stub.func), "a" (mmvalp),
+                      [mask] "i" (EFLAGS_MASK));
+
+        put_stub(stub);
+        put_fpu(&fic);
+        break;
+
     case X86EMUL_OPC(0x0f, 0x30): /* wrmsr */
         generate_exception_if(!mode_ring0(), EXC_GP, 0);
         fail_if(ops->write_msr == NULL);

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  parent reply	other threads:[~2017-01-25 15:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-25 14:49 [PATCH 0/8] x86emul: MMX/SSE/SSE2 support Jan Beulich
2017-01-25 15:03 ` [PATCH 1/8] x86emul: catch exceptions occurring in stubs Jan Beulich
2017-01-25 15:04 ` [PATCH 2/8] x86emul: support most memory accessing MMX/SSE/SSE2 insns Jan Beulich
2017-01-25 15:04 ` [PATCH 3/8] x86emul: support MMX/SSE/SSE2 moves Jan Beulich
2017-01-25 15:05 ` [PATCH 4/8] x86emul: support MMX/SSE/SSE2 converts Jan Beulich
2017-01-25 15:05 ` Jan Beulich [this message]
2017-01-25 15:06 ` [PATCH 6/8] x86emul: support MMX/SSE/SSE2 insns with only register operands Jan Beulich
2017-01-25 15:06 ` [PATCH 7/8] x86emul: support {,V}{LD,ST}MXCSR Jan Beulich
2017-01-25 15:07 ` [PATCH 8/8] x86emul: support {,V}MOVNTDQA Jan Beulich

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