Ejemplo n.º 1
0
Archivo: nteh.c Proyecto: spott/dmd
void nteh_usevars()
{
#if SCPP
    // Turn off SFLdead and SFLunambig in Sflags
    nteh_contextsym()->Sflags &= ~(SFLdead | SFLunambig);
    nteh_contextsym()->Sflags |= SFLread;
    nteh_ecodesym()->Sflags   &= ~(SFLdead | SFLunambig);
    nteh_ecodesym()->Sflags   |= SFLread;
#else
    // Turn off SFLdead and SFLunambig in Sflags
    nteh_contextsym()->Sflags &= ~SFLdead;
    nteh_contextsym()->Sflags |= SFLread;
#endif
}
Ejemplo n.º 2
0
code *nteh_filter(block *b)
{
    code cs;
    CodeBuilder cdb;

    assert(b->BC == BC_filter);
    if (b->Bflags & BFLehcode)          // if referenced __ecode
    {
        /* Generate:
                mov     EAX,__context[EBP].info
                mov     EAX,[EAX]
                mov     EAX,[EAX]
                mov     __ecode[EBP],EAX
         */

        cdb.append(getregs(mAX));

        cs.Iop = 0x8B;
        cs.Irm = modregrm(2,AX,BPRM);
        cs.Iflags = 0;
        cs.Irex = 0;
        cs.IFL1 = FLconst;
        // EBP offset of __context.info
        cs.IEV1.Vint = nteh_EBPoffset_info();
        cdb.gen(&cs);                 // MOV EAX,__context[EBP].info

        cs.Irm = modregrm(0,AX,0);
        cdb.gen(&cs);                     // MOV EAX,[EAX]
        cdb.gen(&cs);                     // MOV EAX,[EAX]

        cs.Iop = 0x89;
        cs.Irm = modregrm(2,AX,BPRM);
        cs.IFL1 = FLauto;
        cs.IEVsym1 = nteh_ecodesym();
        cs.IEVoffset1 = 0;
        cdb.gen(&cs);                     // MOV __ecode[EBP],EAX
    }
    return cdb.finish();
}