GFXBitmap *GFXFontEdit::getBitmapAbsolute(int charTableIndex)
{
// pluck a bitmap (based on index in charTable, not ascii code)
GFXCharInfo *cInfo;
GFXBitmap *bitmap0, *bitmap1, *bitmapSheet;
cInfo = &(charTable[charTableIndex]);
RectI bound(cInfo->x,
cInfo->y,
cInfo->x + cInfo->width - 1,
cInfo->y + cInfo->height - 1);
// get a pointer to the sheet containing the char we're grabbing
bitmapSheet = bma.array[cInfo->bitmapNo];
// get a sub bitmap, note this uses shared memory
bitmap0 = bitmapSheet->createSubBitmap(&bound);
// from the sub bitmap create a new stand-alone bitmap
bitmap1 = GFXBitmap::create(cInfo->width, cInfo->height);
bitmap1->attribute = bitmapSheet->attribute;
copyBits(bitmap1, bitmap0);
// delete the temporary sub bitmap (won't delete pBits data since
// it shares with original sheet
delete bitmap0;
return(bitmap1);
}
/**
* calculates the 12 bit CRC on a 128 bit word
*/
bitset<12> CRC12Calc::getCRC12(bitset<128> &dataSet128)
{
bitset<12> crc;
bitset<32> dataset32;
bool crc_valid = false;
bitset<12> p5;
for (int i=3;i>=0;i--)
{
copyBits(dataset32, dataSet128, 0, i*32, 32);
crc = getCRC12_part(dataset32, i, crc_valid, p5);
}
return crc;
}
Error Context::livenessAnalysis() {
FuncNode* func = getFunc();
JumpNode* from = NULL;
Node* node = func->getEnd();
uint32_t bLen = static_cast<uint32_t>(
((_contextVd.getLength() + VarBits::kEntityBits - 1) / VarBits::kEntityBits));
LivenessTarget* ltCur = NULL;
LivenessTarget* ltUnused = NULL;
size_t varMapToVaListOffset = _varMapToVaListOffset;
// No variables.
if (bLen == 0)
return kErrorOk;
VarBits* bCur = newBits(bLen);
if (bCur == NULL)
goto _NoMemory;
// Allocate bits for code visited first time.
_OnVisit:
for (;;) {
if (node->hasLiveness()) {
if (bCur->_addBitsDelSource(node->getLiveness(), bCur, bLen))
goto _OnPatch;
else
goto _OnDone;
}
VarBits* bTmp = copyBits(bCur, bLen);
if (bTmp == NULL)
goto _NoMemory;
node->setLiveness(bTmp);
VarMap* map = node->getMap();
if (map != NULL) {
uint32_t vaCount = map->getVaCount();
VarAttr* vaList = reinterpret_cast<VarAttr*>(((uint8_t*)map) + varMapToVaListOffset);
for (uint32_t i = 0; i < vaCount; i++) {
VarAttr* va = &vaList[i];
VarData* vd = va->getVd();
uint32_t flags = va->getFlags();
uint32_t ctxId = vd->getContextId();
if ((flags & kVarAttrOutAll) && !(flags & kVarAttrInAll)) {
// Write-Only.
bTmp->setBit(ctxId);
bCur->delBit(ctxId);
}
else {
// Read-Only or Read/Write.
bTmp->setBit(ctxId);
bCur->setBit(ctxId);
}
}
}
if (node->getType() == kNodeTypeTarget)
goto _OnTarget;
if (node == func)
goto _OnDone;
ASMJIT_ASSERT(node->getPrev());
node = node->getPrev();
}
// Patch already generated liveness bits.
_OnPatch:
for (;;) {
ASMJIT_ASSERT(node->hasLiveness());
VarBits* bNode = node->getLiveness();
if (!bNode->_addBitsDelSource(bCur, bLen))
goto _OnDone;
if (node->getType() == kNodeTypeTarget)
goto _OnTarget;
if (node == func)
goto _OnDone;
node = node->getPrev();
}
_OnTarget:
if (static_cast<TargetNode*>(node)->getNumRefs() != 0) {
// Push a new LivenessTarget onto the stack if needed.
if (ltCur == NULL || ltCur->node != node) {
// Allocate a new LivenessTarget object (from pool or zone).
LivenessTarget* ltTmp = ltUnused;
if (ltTmp != NULL) {
ltUnused = ltUnused->prev;
}
else {
ltTmp = _baseZone.allocT<LivenessTarget>(
sizeof(LivenessTarget) - sizeof(VarBits) + bLen * sizeof(uintptr_t));
if (ltTmp == NULL)
goto _NoMemory;
}
// Initialize and make current - ltTmp->from will be set later on.
ltTmp->prev = ltCur;
ltTmp->node = static_cast<TargetNode*>(node);
ltCur = ltTmp;
from = static_cast<TargetNode*>(node)->getFrom();
ASMJIT_ASSERT(from != NULL);
}
else {
from = ltCur->from;
goto _OnJumpNext;
}
// Visit/Patch.
do {
ltCur->from = from;
bCur->copyBits(node->getLiveness(), bLen);
if (!from->hasLiveness()) {
node = from;
goto _OnVisit;
}
// Issue #25: Moved '_OnJumpNext' here since it's important to patch
// code again if there are more live variables than before.
_OnJumpNext:
if (bCur->delBits(from->getLiveness(), bLen)) {
node = from;
goto _OnPatch;
}
from = from->getJumpNext();
} while (from != NULL);
// Pop the current LivenessTarget from the stack.
{
LivenessTarget* ltTmp = ltCur;
ltCur = ltCur->prev;
ltTmp->prev = ltUnused;
ltUnused = ltTmp;
}
}
bCur->copyBits(node->getLiveness(), bLen);
node = node->getPrev();
if (node->isJmp() || !node->isFetched())
goto _OnDone;
if (!node->hasLiveness())
goto _OnVisit;
if (bCur->delBits(node->getLiveness(), bLen))
goto _OnPatch;
_OnDone:
if (ltCur != NULL) {
node = ltCur->node;
from = ltCur->from;
goto _OnJumpNext;
}
return kErrorOk;
_NoMemory:
return setError(kErrorNoHeapMemory);
}
/**
* calculates a part of the CRC; used by getCRC12()
*/
bitset<12> CRC12Calc::getCRC12_part(bitset<32> DATA_in, int subtick_counter, bool &crc_valid, bitset<12> &p5)
{
bitset<8> b0, b1, d0, d1;
bitset<12> r0, r1, r2, r3, r4, r5, r6, r4_reg, r5_reg,p0,p1,p2,p3,p4,p3_reg,p4_reg;
bitset<3> subtick_counter_reg;
if (subtick_counter == 3)
{
r0 = 0;
} else
{
r0 = p5;
}
if (subtick_counter == 0)
{
crc_valid = true;
} else
{
crc_valid = false;
}
copyBits(b1, DATA_in, 0, 24, 8);
copyBits(b0, DATA_in, 0, 16, 8);
copyBits(d1, DATA_in, 0, 8, 8);
copyBits(d0, DATA_in, 0, 0, 8);
copyBits(r1, r0, 8, 0, 4);
copyBits(r1, b1, 0, 0, 8);
bitset<8> tmpr0;
copyBits(tmpr0, r0, 0, 4, 8);
r2 = lookupCRC(tmpr0);
r3 = r1 ^ r2;
copyBits(r4, r3, 8, 0, 4);
copyBits(r4, b0, 0, 0, 8);
bitset<8> tmpr3;
copyBits(tmpr3, r3, 0, 4, 8);
r5 = lookupCRC(tmpr3);
r6 = r5 ^ r4;
bitset<8> tmpr6;
copyBits(tmpr6, r6, 0, 4, 8);
p0 = lookupCRC(tmpr6);
copyBits(p1, r6, 8, 0, 4);
copyBits(p1, d1, 0, 0, 8);
p2 = p0 ^ p1;
bitset<8> tmpp2;
copyBits(tmpp2, p2, 0, 4, 8);
p3 = lookupCRC(tmpp2);
copyBits(p4, p2, 8, 0, 4);
copyBits(p4, d0, 0, 0, 8);
p5 = p3 ^ p4;
return p5;
}
