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authorPavel Pisa <pisa@cmp.felk.cvut.cz>2019-02-11 18:40:40 +0100
committerPavel Pisa <pisa@cmp.felk.cvut.cz>2019-02-11 18:40:40 +0100
commitbb7092e96401e4c89c44773c932788c9b0f87b53 (patch)
treec888153bbdeb52f1c882af1c92fb6e1e9ebe894b /qtmips_machine
parent10f4d52221438f0d5ce7cc72c5b6c1f6720ef5c6 (diff)
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Basic "hardware" breakpoints support implemented.
It works like real inserted breakpoint on hardware. Breakpoint has to be removed to allow code continue because else instruction is refetch and breakpoint triggers again. The single step function should resolve temporal masking of the breakpoint. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Diffstat (limited to 'qtmips_machine')
-rw-r--r--qtmips_machine/core.cpp6
-rw-r--r--qtmips_machine/core.h2
-rw-r--r--qtmips_machine/qtmipsmachine.cpp4
-rw-r--r--qtmips_machine/qtmipsmachine.h2
4 files changed, 7 insertions, 7 deletions
diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp
index 68dbe0b..7c92949 100644
--- a/qtmips_machine/core.cpp
+++ b/qtmips_machine/core.cpp
@@ -83,7 +83,7 @@ Core::hwBreak::hwBreak(std::uint32_t addr) {
count = 0;
}
-void Core::inser_hwbreak(std::uint32_t address) {
+void Core::insert_hwbreak(std::uint32_t address) {
hw_breaks.insert(address, new hwBreak(address));
}
@@ -118,9 +118,9 @@ bool Core::handle_exception(Core *core, Registers *regs, ExceptionCause excause,
{
if (excause == EXCAUSE_HWBREAK) {
if (in_delay_slot)
- regs->pc_abs_jmp(inst_addr);
- else
regs->pc_abs_jmp(jump_branch_pc);
+ else
+ regs->pc_abs_jmp(inst_addr);
}
ExceptionHandler *exhandler = ex_handlers.value(excause);
diff --git a/qtmips_machine/core.h b/qtmips_machine/core.h
index 88d0e9b..bd62f52 100644
--- a/qtmips_machine/core.h
+++ b/qtmips_machine/core.h
@@ -81,7 +81,7 @@ public:
MemoryAccess *get_mem_data();
MemoryAccess *get_mem_program();
void register_exception_handler(ExceptionCause excause, ExceptionHandler *exhandler);
- void inser_hwbreak(std::uint32_t address);
+ void insert_hwbreak(std::uint32_t address);
void remove_hwbreak(std::uint32_t address);
bool is_hwbreak(std::uint32_t address);
diff --git a/qtmips_machine/qtmipsmachine.cpp b/qtmips_machine/qtmipsmachine.cpp
index f846ed2..23a83d3 100644
--- a/qtmips_machine/qtmipsmachine.cpp
+++ b/qtmips_machine/qtmipsmachine.cpp
@@ -206,9 +206,9 @@ void QtMipsMachine::register_exception_handler(ExceptionCause excause,
cr->register_exception_handler(excause, exhandler);
}
-void QtMipsMachine::inser_hwbreak(std::uint32_t address) {
+void QtMipsMachine::insert_hwbreak(std::uint32_t address) {
if (cr != nullptr)
- cr->inser_hwbreak(address);
+ cr->insert_hwbreak(address);
}
void QtMipsMachine::remove_hwbreak(std::uint32_t address) {
diff --git a/qtmips_machine/qtmipsmachine.h b/qtmips_machine/qtmipsmachine.h
index 82245ff..de5275a 100644
--- a/qtmips_machine/qtmipsmachine.h
+++ b/qtmips_machine/qtmipsmachine.h
@@ -78,7 +78,7 @@ public:
bool exited();
void register_exception_handler(ExceptionCause excause, ExceptionHandler *exhandler);
- void inser_hwbreak(std::uint32_t address);
+ void insert_hwbreak(std::uint32_t address);
void remove_hwbreak(std::uint32_t address);
bool is_hwbreak(std::uint32_t address);