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breakpoint code

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This commit is contained in:
Kelvin Sherlock 2013-07-04 12:12:44 -04:00
parent 03c0951253
commit 552d95f9e0
1 changed files with 121 additions and 0 deletions
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121
bin/debugger.cpp
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@ -6,7 +6,10 @@
#include <string>
#include <vector>
#include <array>
#include <unordered_set>
#include <unordered_map>
#include <bitset>
#include <readline/readline.h>
@ -22,6 +25,124 @@
#include <macos/traps.h>
#include <macos/sysequ.h>
bool ParseLine(const char *iter, Command *command);
extern "C" {
// any reason to have enable/disable flag
// vs deleting it?
std::unordered_map<uint16_t, bool> tbrkMap;
std::unordered_map<uint16_t, unsigned> brkMap;
std::array<uint32_t, 4096> brkPageMap; // bloom filter on a page-level.
void tbrkAdd(uint16_t tool)
{
auto iter = tbrkMap.find(tool);
if (iter == tbrkMap.end())
{
tbrkMap.emplace(tool, true);
}
}
void tbrkRemove(uint16_t tool)
{
auto iter = tbrkMap.find(tool);
if (iter == tbrkMap.end()) return;
tbrkMap.erase(iter);
}
void tbrkRemoveAll()
{
tbrkMap.clear();
}
bool tbrkLookup(uint16_t tool)
{
if ((tool & 0xf000) != 0xa000) return false;
return tbrkMap.find(tool) != tbrkMap.end();
}
void brkRemoveAll()
{
brkPageMap.fill(0);
brkMap.clear();
}
void brkRemove(uint32_t address)
{
uint32_t page = address >> 12;
if (page >= brkPageMap.size()) return;
auto iter = brkMap.find(address);
if (iter == brkMap.end())
return;
brkPageMap[page]--;
brkMap.erase(iter);
}
void brkAdd(uint32_t address)
{
uint32_t page = address >> 12;
if (page >= brkPageMap.size()) return;
auto iter = brkMap.find(address);
if (iter == brkMap.end())
{
brkPageMap[page]++;
brkMap.emplace(address, 0);
}
}
bool brkLookup(uint32_t address)
{
uint32_t page = address >> 12;
if (page >= brkPageMap.size()) return false;
if (!brkPageMap[page]) return false;
return brkMap.find(address) != brkMap.end();
}
uint32_t debuggerReadLong(uint32_t address)
{
uint32_t tmp = 0;
for (unsigned i = 0; i < 4; ++i)
{
if (address < Flags.memorySize)
tmp = (tmp << 8) + Flags.memory[address++];
}
return tmp;
}
uint16_t debuggerReadWord(uint32_t address)
{
uint16_t tmp = 0;
for (unsigned i = 0; i < 2; ++i)
{
if (address < Flags.memorySize)
tmp = (tmp << 8) + Flags.memory[address++];
}
return tmp;
}
uint8_t debuggerReadByte(uint32_t address)
{
if (address < Flags.memorySize)
return Flags.memory[address];
return 0;
}
}
namespace {
void hexdump(const uint8_t *data, ssize_t size, uint32_t address = 0)