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Core: Add memory search "guessing"

This commit is contained in:
Vicki Pfau 2017-06-05 18:41:09 -07:00
parent cf7017dd86
commit a4faf9f079
5 changed files with 162 additions and 7 deletions
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1
CHANGES
View File

@ -23,6 +23,7 @@ Features:
- GB MBC: Add MBC1 multicart support
- GBA: Implement keypad interrupts
- LR35902: Watchpoints
- Memory search
Bugfixes:
- LR35902: Fix core never exiting with certain event patterns
- GB Timer: Improve DIV reset behavior

1
include/mgba/core/mem-search.h
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@ -34,6 +34,7 @@ struct mCoreMemorySearchParams {
struct mCoreMemorySearchResult {
uint32_t address;
int segment;
uint64_t guessDivisor;
enum mCoreMemorySearchType type;
};

154
src/core/mem-search.c
View File

@ -31,6 +31,7 @@ static size_t _search32(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i;
res->type = mCORE_MEMORY_SEARCH_32;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 2) && (!limit || found < limit)) {
@ -38,6 +39,7 @@ static size_t _search32(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 4;
res->type = mCORE_MEMORY_SEARCH_32;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 4) && (!limit || found < limit)) {
@ -45,6 +47,7 @@ static size_t _search32(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 8;
res->type = mCORE_MEMORY_SEARCH_32;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 8) && (!limit || found < limit)) {
@ -52,6 +55,7 @@ static size_t _search32(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 12;
res->type = mCORE_MEMORY_SEARCH_32;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
}
@ -84,6 +88,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 2) && (!limit || found < limit)) {
@ -91,6 +96,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 2;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 4) && (!limit || found < limit)) {
@ -98,6 +104,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 4;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 8) && (!limit || found < limit)) {
@ -105,6 +112,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 6;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 16) && (!limit || found < limit)) {
@ -112,6 +120,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 8;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 32) && (!limit || found < limit)) {
@ -119,6 +128,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 10;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 64) && (!limit || found < limit)) {
@ -126,6 +136,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 12;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 128) && (!limit || found < limit)) {
@ -133,6 +144,7 @@ static size_t _search16(const void* mem, size_t size, const struct mCoreMemoryBl
res->address = start + i + 14;
res->type = mCORE_MEMORY_SEARCH_16;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
}
@ -164,6 +176,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 2) && (!limit || found < limit)) {
@ -171,6 +184,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 1;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 4) && (!limit || found < limit)) {
@ -178,6 +192,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 2;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 8) && (!limit || found < limit)) {
@ -185,6 +200,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 3;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 16) && (!limit || found < limit)) {
@ -192,6 +208,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 4;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 32) && (!limit || found < limit)) {
@ -199,6 +216,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 5;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 64) && (!limit || found < limit)) {
@ -206,6 +224,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 6;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
if ((mask & 128) && (!limit || found < limit)) {
@ -213,6 +232,7 @@ static size_t _search8(const void* mem, size_t size, const struct mCoreMemoryBlo
res->address = start + i + 7;
res->type = mCORE_MEMORY_SEARCH_8;
res->segment = -1; // TODO
res->guessDivisor = 1;
++found;
}
}
@ -240,11 +260,84 @@ static size_t _searchStr(const void* mem, size_t size, const struct mCoreMemoryB
}
static size_t _searchGuess(const void* mem, size_t size, const struct mCoreMemoryBlock* block, const char* valueStr, struct mCoreMemorySearchResults* out, size_t limit) {
// TODO: As hex
// TODO: As decimal
// TODO: As BCD
// TODO: As str
return 0;
char* end;
uint64_t value;
size_t found = 0;
struct mCoreMemorySearchResults tmp;
mCoreMemorySearchResultsInit(&tmp, 0);
// Decimal:
value = strtoull(valueStr, &end, 10);
if (end) {
if (value > 0x10000) {
found += _search32(mem, size, block, value, out, limit ? limit - found : 0);
} else if (value > 0x100) {
found += _search16(mem, size, block, value, out, limit ? limit - found : 0);
} else {
found += _search8(mem, size, block, value, out, limit ? limit - found : 0);
}
uint32_t divisor = 1;
while (value && !(value % 10)) {
mCoreMemorySearchResultsClear(&tmp);
value /= 10;
divisor *= 10;
if (value > 0x10000) {
found += _search32(mem, size, block, value, &tmp, limit ? limit - found : 0);
} else if (value > 0x100) {
found += _search16(mem, size, block, value, &tmp, limit ? limit - found : 0);
} else {
found += _search8(mem, size, block, value, &tmp, limit ? limit - found : 0);
}
size_t i;
for (i = 0; i < mCoreMemorySearchResultsSize(&tmp); ++i) {
struct mCoreMemorySearchResult* res = mCoreMemorySearchResultsGetPointer(&tmp, i);
res->guessDivisor = divisor;
*mCoreMemorySearchResultsAppend(out) = *res;
}
}
}
// Hex:
value = strtoull(valueStr, &end, 16);
if (end) {
if (value > 0x10000) {
found += _search32(mem, size, block, value, out, limit ? limit - found : 0);
} else if (value > 0x100) {
found += _search16(mem, size, block, value, out, limit ? limit - found : 0);
} else {
found += _search8(mem, size, block, value, out, limit ? limit - found : 0);
}
uint32_t divisor = 1;
while (value && !(value & 0xF)) {
mCoreMemorySearchResultsClear(&tmp);
value >>= 4;
divisor <<= 4;
if (value > 0x10000) {
found += _search32(mem, size, block, value, &tmp, limit ? limit - found : 0);
} else if (value > 0x100) {
found += _search16(mem, size, block, value, &tmp, limit ? limit - found : 0);
} else {
found += _search8(mem, size, block, value, &tmp, limit ? limit - found : 0);
}
size_t i;
for (i = 0; i < mCoreMemorySearchResultsSize(&tmp); ++i) {
struct mCoreMemorySearchResult* res = mCoreMemorySearchResultsGetPointer(&tmp, i);
res->guessDivisor = divisor;
*mCoreMemorySearchResultsAppend(out) = *res;
}
}
}
mCoreMemorySearchResultsDeinit(&tmp);
return found;
}
static size_t _search(const void* mem, size_t size, const struct mCoreMemoryBlock* block, const struct mCoreMemorySearchParams* params, struct mCoreMemorySearchResults* out, size_t limit) {
@ -285,6 +378,38 @@ void mCoreMemorySearch(struct mCore* core, const struct mCoreMemorySearchParams*
}
}
bool _testGuess(struct mCore* core, const struct mCoreMemorySearchResult* res, const struct mCoreMemorySearchParams* params) {
uint64_t value;
char* end;
value = strtoull(params->valueStr, &end, 10);
if (end) {
if (core->rawRead8(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
if ((!res->address & 1) && core->rawRead16(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
if ((!res->address & 3) && core->rawRead32(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
}
value = strtoull(params->valueStr, &end, 16);
if (end) {
if (core->rawRead8(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
if ((!res->address & 1) && core->rawRead16(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
if ((!res->address & 3) && core->rawRead32(core, res->address, res->segment) * res->guessDivisor == value) {
return true;
}
}
return false;
}
void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchParams* params, struct mCoreMemorySearchResults* inout) {
size_t i;
for (i = 0; i < mCoreMemorySearchResultsSize(inout); ++i) {
@ -293,7 +418,6 @@ void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchP
case mCORE_MEMORY_SEARCH_8:
switch (params->type) {
case mCORE_MEMORY_SEARCH_8:
case mCORE_MEMORY_SEARCH_GUESS:
if (core->rawRead8(core, res->address, res->segment) != params->value8) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
@ -311,6 +435,12 @@ void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchP
--i;
}
break;
case mCORE_MEMORY_SEARCH_GUESS:
if (!_testGuess(core, res, params)) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
}
break;
default:
break;
}
@ -318,7 +448,6 @@ void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchP
case mCORE_MEMORY_SEARCH_16:
switch (params->type) {
case mCORE_MEMORY_SEARCH_16:
case mCORE_MEMORY_SEARCH_GUESS:
if (core->rawRead16(core, res->address, res->segment) != params->value16) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
@ -330,6 +459,12 @@ void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchP
--i;
}
break;
case mCORE_MEMORY_SEARCH_GUESS:
if (!_testGuess(core, res, params)) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
}
break;
default:
break;
}
@ -337,12 +472,17 @@ void mCoreMemorySearchRepeat(struct mCore* core, const struct mCoreMemorySearchP
case mCORE_MEMORY_SEARCH_32:
switch (params->type) {
case mCORE_MEMORY_SEARCH_32:
case mCORE_MEMORY_SEARCH_GUESS:
if (core->rawRead32(core, res->address, res->segment) != params->value32) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
}
break;
case mCORE_MEMORY_SEARCH_GUESS:
if (!_testGuess(core, res, params)) {
mCoreMemorySearchResultsShift(inout, i, 1);
--i;
}
break;
default:
break;
}

6
src/platform/qt/MemorySearch.cpp
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@ -87,6 +87,12 @@ bool MemorySearch::createParams(mCoreMemorySearchParams* params) {
}
}
}
if (m_ui.numGuess->isChecked()) {
params->type = mCORE_MEMORY_SEARCH_GUESS;
m_string = m_ui.value->text().toLocal8Bit();
params->valueStr = m_string.constData();
ok = true;
}
}
if (m_ui.typeStr->isChecked()) {
params->type = mCORE_MEMORY_SEARCH_STRING;

7
src/platform/qt/MemorySearch.ui
View File

@ -160,6 +160,13 @@
</property>
</widget>
</item>
<item row="8" column="1">
<widget class="QRadioButton" name="numGuess">
<property name="text">
<string>Guess</string>
</property>
</widget>
</item>
</layout>
</item>
<item row="2" column="0" colspan="2">