Changeset 106626 in vbox for trunk/src/VBox/Disassembler/DisasmCore-armv8.cpp

Timestamp:

Oct 23, 2024 4:54:39 PM (5 weeks ago)

Author:

vboxsync

Message:

Disassembler: Re-arrange the ARMv8 tables to allow for multiple decoders for a single instruction class in case instructions in the same class require different decoding, implement decoding of 2-source instructions, bugref:10394

File:

• trunk/src/VBox/Disassembler/DisasmCore-armv8.cpp (modified) (4 diffs)

trunk/src/VBox/Disassembler/DisasmCore-armv8.cpp

@@ -80 +80 @@
 static FNDISPARSEARMV8 disArmV8ParseImmZero;
 static FNDISPARSEARMV8 disArmV8ParseGprZr;
+static FNDISPARSEARMV8 disArmV8ParseGprZr32;
+static FNDISPARSEARMV8 disArmV8ParseGprZr64;
 static FNDISPARSEARMV8 disArmV8ParseGprSp;
 static FNDISPARSEARMV8 disArmV8ParseGprOff;
@@ -129 +131 @@
     disArmV8ParseImmZero,
     disArmV8ParseGprZr,
+    disArmV8ParseGprZr32,
+    disArmV8ParseGprZr64,
     disArmV8ParseGprSp,
     disArmV8ParseGprOff,
@@ -306 +310 @@
 
 
+static int disArmV8ParseGprZr32(PDISSTATE pDis, uint32_t u32Insn, PCDISARMV8OPCODE pOp, PCDISARMV8INSNCLASS pInsnClass, PDISOPPARAM pParam, PCDISARMV8INSNPARAM pInsnParm, bool *pf64Bit)
+{
+    RT_NOREF(pDis, pOp, pInsnClass, pf64Bit);
+    pParam->armv8.Op.Reg.idReg = disArmV8ExtractBitVecFromInsn(u32Insn, pInsnParm->idxBitStart, pInsnParm->cBits);
+    pParam->armv8.Op.Reg.enmRegType = kDisOpParamArmV8RegType_Gpr_32Bit;
+    return VINF_SUCCESS;
+}
+
+
+static int disArmV8ParseGprZr64(PDISSTATE pDis, uint32_t u32Insn, PCDISARMV8OPCODE pOp, PCDISARMV8INSNCLASS pInsnClass, PDISOPPARAM pParam, PCDISARMV8INSNPARAM pInsnParm, bool *pf64Bit)
+{
+    RT_NOREF(pDis, pOp, pInsnClass, pf64Bit);
+    pParam->armv8.Op.Reg.idReg = disArmV8ExtractBitVecFromInsn(u32Insn, pInsnParm->idxBitStart, pInsnParm->cBits);
+    pParam->armv8.Op.Reg.enmRegType = kDisOpParamArmV8RegType_Gpr_64Bit;
+    return VINF_SUCCESS;
+}
+
+
 static int disArmV8ParseGprSp(PDISSTATE pDis, uint32_t u32Insn, PCDISARMV8OPCODE pOp, PCDISARMV8INSNCLASS pInsnClass, PDISOPPARAM pParam, PCDISARMV8INSNPARAM pInsnParm, bool *pf64Bit)
 {
@@ -950 +972 @@
     int rc = VINF_SUCCESS;
     PCDISARMV8INSNPARAM pDecode = &pInsnClass->paParms[0];
+    if (pOp->paDecode)
+        pDecode = &pOp->paDecode[0];
     while (   (pDecode->idxParse != kDisParmParseNop)
            && RT_SUCCESS(rc))