/**
* Disassembles one instruction; only fully disassembly an instruction if it matches the filter criteria
*
* @returns VBox error code
* @param uInstrAddr Pointer to the structure to disassemble.
* @param enmCpuMode The CPU mode.
* @param pfnCallback The byte fetcher callback.
* @param uFilter Instruction filter.
* @param pDis Where to return the disassembled instruction info.
* @param pcbInstr Where to store the size of the instruction. NULL is
* allowed.
* @param pszOutput Storage for disassembled instruction.
* @param cbOutput Size of the output buffer.
*
* @todo Define output callback.
*/
DISDECL(int) DISInstrToStrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode,
PFNDISREADBYTES pfnReadBytes, void *pvUser, uint32_t uFilter,
PDISSTATE pDis, uint32_t *pcbInstr, char *pszOutput, size_t cbOutput)
{
/* Don't filter if formatting is desired. */
if (uFilter != DISOPTYPE_ALL && pszOutput && cbOutput)
uFilter = DISOPTYPE_ALL;
int rc = DISInstrEx(uInstrAddr, enmCpuMode, uFilter, pfnReadBytes, pvUser, pDis, pcbInstr);
if (RT_SUCCESS(rc) && pszOutput && cbOutput)
{
size_t cch = DISFormatYasmEx(pDis, pszOutput, cbOutput,
DIS_FMT_FLAGS_BYTES_LEFT | DIS_FMT_FLAGS_BYTES_BRACKETS | DIS_FMT_FLAGS_BYTES_SPACED
| DIS_FMT_FLAGS_RELATIVE_BRANCH | DIS_FMT_FLAGS_ADDR_LEFT,
NULL /*pfnGetSymbol*/, NULL /*pvUser*/);
if (cch + 2 <= cbOutput)
{
pszOutput[cch++] = '\n';
pszOutput[cch] = '\0';
}
}
return rc;
}
/**
* Disassembles one instruction
*
* @returns VBox error code
* @param pCpu Pointer to cpu structure which have DISCPUSTATE::mode
* set correctly.
* @param pu8Instruction Pointer to the structure to disassemble.
* @param u32EipOffset Offset to add to instruction address to get the real virtual address
* @param pcbSize Where to store the size of the instruction.
* NULL is allowed.
* @param pszOutput Storage for disassembled instruction
*
* @todo Define output callback.
*/
DISDECL(int) DISInstr(PDISCPUSTATE pCpu, RTUINTPTR pu8Instruction, unsigned u32EipOffset, unsigned *pcbSize,
char *pszOutput)
{
return DISInstrEx(pCpu, pu8Instruction, u32EipOffset, pcbSize, pszOutput, OPTYPE_ALL);
}