Changeset 106692 in vbox for trunk/src/VBox/VMM

Timestamp:

Oct 25, 2024 12:27:42 PM (4 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

165562

Message:

ValidationKit/bootsectors: Implement SIMD FP testcases for cvtpi2ps, and fix it in IEM; bugref:10658; jiraref:VBP-1206

IEM:

• fix IEM cvtpi2ps [mem] trashing the target register
• fix IEM cvtpi2ps [mem] sometimes leaving x87/MMX FTW in the wrong state

Valkit:

• fix Bs3ExtCtxSetReg() ability to load MMX registers
• add BS3_REGISTER_IS_MMX macro
• fix test worker's interaction with x87/MMX FTW
• add 'RAND_x6' FP32 value bars for use in tests of these instructions
• add wacky set of macros for injecting integers into FP data arrays
• implement cvtpi2ps tests

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllInstTwoByte0f.cpp.h (modified) (2 diffs)

trunk/src/VBox/VMM/VMMAll/IEMAllInstTwoByte0f.cpp.h

@@ -3622 +3622 @@
         IEM_MC_MAYBE_RAISE_SSE_RELATED_XCPT();
         IEM_MC_MAYBE_RAISE_FPU_XCPT();
+
+        IEM_MC_PREPARE_FPU_USAGE();
+
         IEM_MC_FETCH_MEM_U64(u64Src, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
-
-        IEM_MC_PREPARE_FPU_USAGE();
-        IEM_MC_FPU_TO_MMX_MODE();
+        IEM_MC_FETCH_XREG_XMM(Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); /* Need it because the high quadword remains unchanged. */
 
         IEM_MC_CALL_SSE_AIMPL_2(iemAImpl_cvtpi2ps_u128, pDst, u64Src);
@@ -3631 +3632 @@
 
         IEM_MC_ADVANCE_RIP_AND_FINISH();
+        IEM_MC_FPU_TO_MMX_MODE();
         IEM_MC_END();
     }