Changeset 2201 in vbox for trunk/src/VBox/VMM/VMMGC/IOMGC.cpp

Timestamp:

Apr 19, 2007 8:54:41 AM (18 years ago)

Author:

vboxsync

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

20546

Message:

Moved ins/outs handling to the VMMAll directory.

File:

• trunk/src/VBox/VMM/VMMGC/IOMGC.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMGC/IOMGC.cpp

@@ -420 +420 @@
 }
 
-
-/**
- * [REP*] INSB/INSW/INSD
- * ES:EDI,DX[,ECX]
- *
- * @returns VBox status code.
- *
- * @param   pVM         The virtual machine (GC pointer ofcourse).
- * @param   pRegFrame   Pointer to CPUMCTXCORE guest registers structure.
- * @param   pCpu        Disassembler CPU state.
- */
-IOMDECL(int) IOMInterpretINS(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
-{
-#ifdef VBOX_WITH_STATISTICS
-    STAM_COUNTER_INC(&pVM->iom.s.StatGCInstIns);
-#endif
-
-    /*
-     * We do not support REPNE, 16-bit addressing or decrementing destination
-     * pointer. Segment prefixes are deliberately ignored, as per the instruction specification.
-     */
-    if (   pCpu->prefix & PREFIX_REPNE
-        || (pCpu->addrmode != CPUMODE_32BIT)
-        || pRegFrame->eflags.Bits.u1DF)
-        return VINF_IOM_HC_IOPORT_READ;
-
-    /*
-     * Get port number directly from the register (no need to bother the
-     * disassembler). And get the I/O register size from the opcode / prefix.
-     */
-    uint32_t    uPort = pRegFrame->edx & 0xffff;
-    unsigned    cbSize = 0;
-    if (pCpu->pCurInstr->opcode == OP_INSB)
-        cbSize = 1;
-    else
-        cbSize = pCpu->opmode == CPUMODE_32BIT ? 4 : 2;
-
-    int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
-    if (rc == VINF_SUCCESS)
-    {
-        /*
-         * Get bytes/words/dwords count to transfer.
-         */
-        RTGCUINTREG cTransfers = 1;
-        if (pCpu->prefix & PREFIX_REP)
-        {
-            cTransfers = pRegFrame->ecx;
-            if (!cTransfers)
-                return VINF_SUCCESS;
-        }
-
-        /* Convert destination address es:edi. */
-        RTGCPTR GCPtrDst;
-        rc = SELMToFlatEx(pVM, pRegFrame->eflags, pRegFrame->es, (RTGCPTR)pRegFrame->edi, &pRegFrame->esHid, 
-                          SELMTOFLAT_FLAGS_HYPER | SELMTOFLAT_FLAGS_NO_PL,
-                          &GCPtrDst, NULL);
-        if (VBOX_FAILURE(rc))
-        {
-            Log(("INS destination address conversion failed -> fallback, rc=%d\n", rc));
-            return VINF_IOM_HC_IOPORT_READ;
-        }
-
-        /* Access verification first; we can't recover from traps inside this instruction, as the port read cannot be repeated. */
-        uint32_t cpl = CPUMGetGuestCPL(pVM, pRegFrame);
-
-        rc = PGMVerifyAccess(pVM, (RTGCUINTPTR)GCPtrDst, cTransfers * cbSize,
-                             X86_PTE_RW | ((cpl == 3) ? X86_PTE_US : 0));
-        if (rc != VINF_SUCCESS)
-        {
-            Log(("INS will generate a trap -> fallback, rc=%d\n", rc));
-            return VINF_IOM_HC_IOPORT_READ;
-        }
-
-        Log(("IOMGC: rep ins%d port %#x count %d\n", cbSize * 8, uPort, cTransfers));
-        MMGCRamRegisterTrapHandler(pVM);
-
-        /* If the device supports string transfers, ask it to do as
-         * much as it wants. The rest is done with single-word transfers. */
-        const RTGCUINTREG cTransfersOrg = cTransfers;
-        rc = IOMIOPortReadString(pVM, uPort, &GCPtrDst, &cTransfers, cbSize);
-        AssertRC(rc); Assert(cTransfers <= cTransfersOrg);
-        pRegFrame->edi += (cTransfersOrg - cTransfers) * cbSize;
-
-        while (cTransfers && rc == VINF_SUCCESS)
-        {
-            uint32_t u32Value;
-            rc = IOMIOPortRead(pVM, uPort, &u32Value, cbSize);
-            if (rc == VINF_IOM_HC_IOPORT_READ || VBOX_FAILURE(rc))
-                break;
-            int rc2 = MMGCRamWriteNoTrapHandler(GCPtrDst, &u32Value, cbSize);
-            Assert(rc2 == VINF_SUCCESS); NOREF(rc2);
-            GCPtrDst = (RTGCPTR)((RTGCUINTPTR)GCPtrDst + cbSize);
-            pRegFrame->edi += cbSize;
-            cTransfers--;
-        }
-        MMGCRamDeregisterTrapHandler(pVM);
-
-        /* Update ecx on exit. */
-        if (pCpu->prefix & PREFIX_REP)
-            pRegFrame->ecx = cTransfers;
-    }
-    return rc;
-}
-
-
-/**
- * [REP*] OUTSB/OUTSW/OUTSD
- * DS:ESI,DX[,ECX]
- *
- * @returns VBox status code.
- *
- * @param   pVM         The virtual machine (GC pointer ofcourse).
- * @param   pRegFrame   Pointer to CPUMCTXCORE guest registers structure.
- * @param   pCpu        Disassembler CPU state.
- */
-IOMDECL(int) IOMInterpretOUTS(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
-{
-#ifdef VBOX_WITH_STATISTICS
-    STAM_COUNTER_INC(&pVM->iom.s.StatGCInstOuts);
-#endif
-
-    /*
-     * We do not support segment prefixes, REPNE, 16-bit addressing or
-     * decrementing source pointer.
-     */
-    if (   pCpu->prefix & (PREFIX_SEG | PREFIX_REPNE)
-        || (pCpu->addrmode != CPUMODE_32BIT)
-        || pRegFrame->eflags.Bits.u1DF)
-        return VINF_IOM_HC_IOPORT_WRITE;
-
-    /*
-     * Get port number from the first parameter.
-     * And get the I/O register size from the opcode / prefix.
-     */
-    uint32_t    uPort = 0;
-    unsigned    cbSize = 0;
-    bool fRc = iomGCGetRegImmData(pCpu, &pCpu->param1, pRegFrame, &uPort, &cbSize);
-    AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
-    if (pCpu->pCurInstr->opcode == OP_OUTSB)
-        cbSize = 1;
-    else
-        cbSize = pCpu->opmode == CPUMODE_32BIT ? 4 : 2;
-
-    int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
-    if (rc == VINF_SUCCESS)
-    {
-        /*
-         * Get bytes/words/dwords count to transfer.
-         */
-        RTGCUINTREG cTransfers = 1;
-        if (pCpu->prefix & PREFIX_REP)
-        {
-            cTransfers = pRegFrame->ecx;
-            if (!cTransfers)
-                return VINF_SUCCESS;
-        }
-
-        /* Convert source address ds:esi. */
-        RTGCPTR GCPtrSrc;
-        rc = SELMToFlatEx(pVM, pRegFrame->eflags, pRegFrame->ds, (RTGCPTR)pRegFrame->esi, &pRegFrame->dsHid,
-                          SELMTOFLAT_FLAGS_HYPER | SELMTOFLAT_FLAGS_NO_PL,
-                          &GCPtrSrc, NULL);
-        if (VBOX_FAILURE(rc))
-        {
-            Log(("OUTS source address conversion failed -> fallback, rc=%d\n", rc));
-            return VINF_IOM_HC_IOPORT_WRITE;
-        }
-
-        /* Access verification first; we currently can't recover properly from traps inside this instruction */
-        uint32_t cpl = CPUMGetGuestCPL(pVM, pRegFrame);
-        rc = PGMVerifyAccess(pVM, (RTGCUINTPTR)GCPtrSrc, cTransfers * cbSize,
-                             (cpl == 3) ? X86_PTE_US : 0);
-        if (rc != VINF_SUCCESS)
-        {
-            Log(("OUTS will generate a trap -> fallback, rc=%d\n", rc));
-            return VINF_IOM_HC_IOPORT_WRITE;
-        }
-
-        Log(("IOMGC: rep outs%d port %#x count %d\n", cbSize * 8, uPort, cTransfers));
-        MMGCRamRegisterTrapHandler(pVM);
-
-        /*
-         * If the device supports string transfers, ask it to do as
-         * much as it wants. The rest is done with single-word transfers.
-         */
-        const RTGCUINTREG cTransfersOrg = cTransfers;
-        rc = IOMIOPortWriteString(pVM, uPort, &GCPtrSrc, &cTransfers, cbSize);
-        AssertRC(rc); Assert(cTransfers <= cTransfersOrg);
-        pRegFrame->esi += (cTransfersOrg - cTransfers) * cbSize;
-
-        while (cTransfers && rc == VINF_SUCCESS)
-        {
-            uint32_t u32Value;
-            rc = MMGCRamReadNoTrapHandler(&u32Value, GCPtrSrc, cbSize);
-            if (rc != VINF_SUCCESS)
-                break;
-            rc = IOMIOPortWrite(pVM, uPort, u32Value, cbSize);
-            if (rc == VINF_IOM_HC_IOPORT_WRITE)
-                break;
-            GCPtrSrc = (RTGCPTR)((RTUINTPTR)GCPtrSrc + cbSize);
-            pRegFrame->esi += cbSize;
-            cTransfers--;
-        }
-
-        MMGCRamDeregisterTrapHandler(pVM);
-
-        /* Update ecx on exit. */
-        if (pCpu->prefix & PREFIX_REP)
-            pRegFrame->ecx = cTransfers;
-    }
-    return rc;
-}
-
-
 /**
  * Attempts to service an IN/OUT instruction.