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Diffstat (limited to 'src/emu/debug/debugcpu.cpp')
-rw-r--r--src/emu/debug/debugcpu.cpp217
1 files changed, 153 insertions, 64 deletions
diff --git a/src/emu/debug/debugcpu.cpp b/src/emu/debug/debugcpu.cpp
index 5c5a186e2aa..968966b1b74 100644
--- a/src/emu/debug/debugcpu.cpp
+++ b/src/emu/debug/debugcpu.cpp
@@ -25,7 +25,6 @@
#include "uiinput.h"
#include "corestr.h"
-#include "coreutil.h"
#include "osdepend.h"
#include "xmlfile.h"
@@ -410,6 +409,70 @@ void debugger_cpu::halt_on_next_instruction(device_t *device, util::format_argum
}
}
+
+//-------------------------------------------------
+// wait_for_debugger - pause during execution to
+// allow debugging
+//-------------------------------------------------
+
+void debugger_cpu::wait_for_debugger(device_t &device)
+{
+ assert(is_stopped());
+ assert(within_instruction_hook());
+
+ bool firststop = true;
+
+ // load comments if we haven't yet
+ ensure_comments_loaded();
+
+ // reset any transient state
+ reset_transient_flags();
+ set_break_cpu(nullptr);
+
+ // remember the last visible CPU in the debugger
+ m_machine.debugger().console().set_visible_cpu(&device);
+
+ // update all views
+ m_machine.debug_view().update_all();
+ m_machine.debugger().refresh_display();
+
+ // wait for the debugger; during this time, disable sound output
+ m_machine.sound().debugger_mute(true);
+ while (is_stopped())
+ {
+ // flush any pending updates before waiting again
+ m_machine.debug_view().flush_osd_updates();
+
+ emulator_info::periodic_check();
+
+ // clear the memory modified flag and wait
+ set_memory_modified(false);
+ if (m_machine.debug_flags & DEBUG_FLAG_OSD_ENABLED)
+ m_machine.osd().wait_for_debugger(device, firststop);
+ firststop = false;
+
+ // if something modified memory, update the screen
+ if (memory_modified())
+ {
+ m_machine.debug_view().update_all(DVT_DISASSEMBLY);
+ m_machine.debug_view().update_all(DVT_STATE);
+ m_machine.debugger().refresh_display();
+ }
+
+ // check for commands in the source file
+ m_machine.debugger().console().process_source_file();
+
+ // if an event got scheduled, resume
+ if (m_machine.scheduled_event_pending())
+ set_execution_running();
+ }
+ m_machine.sound().debugger_mute(false);
+
+ // remember the last visible CPU in the debugger
+ m_machine.debugger().console().set_visible_cpu(&device);
+}
+
+
//**************************************************************************
// DEVICE DEBUG
//**************************************************************************
@@ -436,6 +499,7 @@ device_debug::device_debug(device_t &device)
, m_endexectime(attotime::zero)
, m_total_cycles(0)
, m_last_total_cycles(0)
+ , m_was_waiting(true)
, m_pc_history_index(0)
, m_pc_history_valid(0)
, m_bplist()
@@ -639,6 +703,13 @@ void device_debug::stop_hook()
void device_debug::interrupt_hook(int irqline, offs_t pc)
{
+ // CPU is presumably no longer waiting if it acknowledges an interrupt
+ if (m_was_waiting)
+ {
+ m_was_waiting = false;
+ compute_debug_flags();
+ }
+
// see if this matches a pending interrupt request
if ((m_flags & DEBUG_FLAG_STOP_INTERRUPT) != 0 && (m_stopirq == -1 || m_stopirq == irqline))
{
@@ -773,6 +844,7 @@ void device_debug::privilege_hook()
}
}
+
//-------------------------------------------------
// instruction_hook - called by the CPU cores
// before executing each instruction
@@ -781,7 +853,7 @@ void device_debug::privilege_hook()
void device_debug::instruction_hook(offs_t curpc)
{
running_machine &machine = m_device.machine();
- debugger_cpu& debugcpu = machine.debugger().cpu();
+ debugger_cpu &debugcpu = machine.debugger().cpu();
// note that we are in the debugger code
debugcpu.set_within_instruction(true);
@@ -795,6 +867,11 @@ void device_debug::instruction_hook(offs_t curpc)
// update total cycles
m_last_total_cycles = m_total_cycles;
m_total_cycles = m_exec->total_cycles();
+ if (m_was_waiting)
+ {
+ m_was_waiting = false;
+ compute_debug_flags();
+ }
// are we tracking our recent pc visits?
if (m_track_pc)
@@ -866,7 +943,7 @@ void device_debug::instruction_hook(offs_t curpc)
}
// handle breakpoints
- if (!debugcpu.is_stopped() && (m_flags & (DEBUG_FLAG_STOP_TIME | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
+ if (!debugcpu.is_stopped() && (m_flags & (DEBUG_FLAG_STOP_TIME | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP | DEBUG_FLAG_LIVE_RP)) != 0)
{
// see if we hit a target time
if ((m_flags & DEBUG_FLAG_STOP_TIME) != 0 && machine.time() >= m_stoptime)
@@ -886,68 +963,68 @@ void device_debug::instruction_hook(offs_t curpc)
}
// check for execution breakpoints
- else if ((m_flags & DEBUG_FLAG_LIVE_BP) != 0)
- breakpoint_check(curpc);
+ else
+ {
+ if ((m_flags & DEBUG_FLAG_LIVE_BP) != 0)
+ breakpoint_check(curpc);
+ if ((m_flags & DEBUG_FLAG_LIVE_RP) != 0)
+ registerpoint_check();
+ }
}
// if we are supposed to halt, do it now
if (debugcpu.is_stopped())
- {
- bool firststop = true;
-
- // load comments if we haven't yet
- debugcpu.ensure_comments_loaded();
+ debugcpu.wait_for_debugger(m_device);
- // reset any transient state
- debugcpu.reset_transient_flags();
- debugcpu.set_break_cpu(nullptr);
-
- // remember the last visible CPU in the debugger
- machine.debugger().console().set_visible_cpu(&m_device);
+ // handle step out/over on the instruction we are about to execute
+ if ((m_flags & (DEBUG_FLAG_STEPPING_OVER | DEBUG_FLAG_STEPPING_OUT | DEBUG_FLAG_STEPPING_BRANCH)) != 0 && (m_flags & (DEBUG_FLAG_CALL_IN_PROGRESS | DEBUG_FLAG_TEST_IN_PROGRESS)) == 0)
+ prepare_for_step_overout(m_state->pcbase());
- // update all views
- machine.debug_view().update_all();
- machine.debugger().refresh_display();
+ // no longer in debugger code
+ debugcpu.set_within_instruction(false);
+}
- // wait for the debugger; during this time, disable sound output
- m_device.machine().sound().debugger_mute(true);
- while (debugcpu.is_stopped())
- {
- // flush any pending updates before waiting again
- machine.debug_view().flush_osd_updates();
- emulator_info::periodic_check();
+//-------------------------------------------------
+// wait_hook - called by the CPU cores while
+// waiting indefinitely for some kind of event
+//-------------------------------------------------
- // clear the memory modified flag and wait
- debugcpu.set_memory_modified(false);
- if (machine.debug_flags & DEBUG_FLAG_OSD_ENABLED)
- machine.osd().wait_for_debugger(m_device, firststop);
- firststop = false;
+void device_debug::wait_hook()
+{
+ running_machine &machine = m_device.machine();
+ debugger_cpu &debugcpu = machine.debugger().cpu();
- // if something modified memory, update the screen
- if (debugcpu.memory_modified())
- {
- machine.debug_view().update_all(DVT_DISASSEMBLY);
- machine.debug_view().update_all(DVT_STATE);
- machine.debugger().refresh_display();
- }
+ // note that we are in the debugger code
+ debugcpu.set_within_instruction(true);
- // check for commands in the source file
- machine.debugger().console().process_source_file();
+ // update total cycles
+ m_last_total_cycles = m_total_cycles;
+ m_total_cycles = m_exec->total_cycles();
- // if an event got scheduled, resume
- if (machine.scheduled_event_pending())
- debugcpu.set_execution_running();
+ // handle registerpoints (but not breakpoints)
+ if (!debugcpu.is_stopped() && (m_flags & (DEBUG_FLAG_STOP_TIME | DEBUG_FLAG_LIVE_RP)) != 0)
+ {
+ // see if we hit a target time
+ if ((m_flags & DEBUG_FLAG_STOP_TIME) != 0 && machine.time() >= m_stoptime)
+ {
+ machine.debugger().console().printf("Stopped at time interval %.1g\n", machine.time().as_double());
+ debugcpu.set_execution_stopped();
}
- machine.sound().debugger_mute(false);
-
- // remember the last visible CPU in the debugger
- machine.debugger().console().set_visible_cpu(&m_device);
+ else if ((m_flags & DEBUG_FLAG_LIVE_RP) != 0)
+ registerpoint_check();
}
- // handle step out/over on the instruction we are about to execute
- if ((m_flags & (DEBUG_FLAG_STEPPING_OVER | DEBUG_FLAG_STEPPING_OUT | DEBUG_FLAG_STEPPING_BRANCH)) != 0 && (m_flags & (DEBUG_FLAG_CALL_IN_PROGRESS | DEBUG_FLAG_TEST_IN_PROGRESS)) == 0)
- prepare_for_step_overout(m_state->pcbase());
+ // if we are supposed to halt, do it now
+ if (debugcpu.is_stopped())
+ {
+ if (!m_was_waiting)
+ {
+ machine.debugger().console().printf("CPU waiting after PC=%s\n", m_state->state_string(STATE_GENPCBASE));
+ m_was_waiting = true;
+ }
+ debugcpu.wait_for_debugger(m_device);
+ }
// no longer in debugger code
debugcpu.set_within_instruction(false);
@@ -1727,7 +1804,7 @@ u32 device_debug::compute_opcode_crc32(offs_t pc) const
buffer.data_get(pc, dasmresult & util::disasm_interface::LENGTHMASK, true, opbuf);
// return a CRC of the exact count of opcode bytes
- return core_crc32(0, &opbuf[0], opbuf.size());
+ return util::crc32_creator::simple(&opbuf[0], opbuf.size());
}
@@ -1754,7 +1831,7 @@ void device_debug::trace(std::unique_ptr<std::ostream> &&file, bool trace_over,
void device_debug::compute_debug_flags()
{
running_machine &machine = m_device.machine();
- debugger_cpu& debugcpu = machine.debugger().cpu();
+ debugger_cpu &debugcpu = machine.debugger().cpu();
// clear out global flags by default, keep DEBUG_FLAG_OSD_ENABLED
machine.debug_flags &= DEBUG_FLAG_OSD_ENABLED;
@@ -1770,7 +1847,7 @@ void device_debug::compute_debug_flags()
// if we're tracking history, or we're hooked, or stepping, or stopping at a breakpoint
// make sure we call the hook
- if ((m_flags & (DEBUG_FLAG_HISTORY | DEBUG_FLAG_STEPPING_ANY | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
+ if ((m_flags & (DEBUG_FLAG_HISTORY | DEBUG_FLAG_STEPPING_ANY | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP | DEBUG_FLAG_LIVE_RP)) != 0)
machine.debug_flags |= DEBUG_FLAG_CALL_HOOK;
// also call if we are tracing
@@ -1780,6 +1857,10 @@ void device_debug::compute_debug_flags()
// if we are stopping at a particular time and that time is within the current timeslice, we need to be called
if ((m_flags & DEBUG_FLAG_STOP_TIME) && m_endexectime <= m_stoptime)
machine.debug_flags |= DEBUG_FLAG_CALL_HOOK;
+
+ // if we were waiting, call if only to clear
+ if (m_was_waiting)
+ machine.debug_flags |= DEBUG_FLAG_CALL_HOOK;
}
@@ -1860,7 +1941,7 @@ void device_debug::prepare_for_step_overout(offs_t pc)
void device_debug::breakpoint_update_flags()
{
// see if there are any enabled breakpoints
- m_flags &= ~DEBUG_FLAG_LIVE_BP;
+ m_flags &= ~(DEBUG_FLAG_LIVE_BP | DEBUG_FLAG_LIVE_RP);
for (auto &bpp : m_bplist)
if (bpp.second->m_enabled)
{
@@ -1868,16 +1949,13 @@ void device_debug::breakpoint_update_flags()
break;
}
- if (!(m_flags & DEBUG_FLAG_LIVE_BP))
+ // see if there are any enabled registerpoints
+ for (debug_registerpoint &rp : m_rplist)
{
- // see if there are any enabled registerpoints
- for (debug_registerpoint &rp : m_rplist)
+ if (rp.m_enabled)
{
- if (rp.m_enabled)
- {
- m_flags |= DEBUG_FLAG_LIVE_BP;
- break;
- }
+ m_flags |= DEBUG_FLAG_LIVE_RP;
+ break;
}
}
@@ -1894,8 +1972,6 @@ void device_debug::breakpoint_update_flags()
void device_debug::breakpoint_check(offs_t pc)
{
- debugger_cpu& debugcpu = m_device.machine().debugger().cpu();
-
// see if we match
auto bpitp = m_bplist.equal_range(pc);
for (auto bpit = bpitp.first; bpit != bpitp.second; ++bpit)
@@ -1903,6 +1979,8 @@ void device_debug::breakpoint_check(offs_t pc)
debug_breakpoint &bp = *bpit->second;
if (bp.hit(pc))
{
+ debugger_cpu &debugcpu = m_device.machine().debugger().cpu();
+
// halt in the debugger by default
debugcpu.set_execution_stopped();
@@ -1919,12 +1997,23 @@ void device_debug::breakpoint_check(offs_t pc)
break;
}
}
+}
+
+//-------------------------------------------------
+// registerpoint_check - check the registerpoints
+// for a given device
+//-------------------------------------------------
+
+void device_debug::registerpoint_check()
+{
// see if we have any matching registerpoints
for (debug_registerpoint &rp : m_rplist)
{
if (rp.hit())
{
+ debugger_cpu &debugcpu = m_device.machine().debugger().cpu();
+
// halt in the debugger by default
debugcpu.set_execution_stopped();