hawkinsw updated this revision to Diff 427794.
hawkinsw added a comment.
(for real) Updating the patch based on helpful feedback from @jingham.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D124731/new/
https://reviews.llvm.org/D124731
Files:
lldb/source/Breakpoint/BreakpointResolverAddress.cpp
lldb/source/Commands/Options.td
lldb/test/API/commands/breakpoint/set/address-nomodule/Makefile
lldb/test/API/commands/breakpoint/set/address-nomodule/TestBreakpointAddressNoModule.py
lldb/test/API/commands/breakpoint/set/address-nomodule/inferior.c
Index: lldb/test/API/commands/breakpoint/set/address-nomodule/inferior.c
===================================================================
--- /dev/null
+++ lldb/test/API/commands/breakpoint/set/address-nomodule/inferior.c
@@ -0,0 +1,6 @@
+int function(int a) { return a; }
+
+int main() {
+ int f = function(10);
+ return f;
+}
Index: lldb/test/API/commands/breakpoint/set/address-nomodule/TestBreakpointAddressNoModule.py
===================================================================
--- /dev/null
+++ lldb/test/API/commands/breakpoint/set/address-nomodule/TestBreakpointAddressNoModule.py
@@ -0,0 +1,36 @@
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestCase(TestBase):
+
+ mydir = TestBase.compute_mydir(__file__)
+
+ def get_address_from_symbol(self, symbol):
+ target = lldbutil.run_to_breakpoint_make_target(self, "a.out", True)
+ bp = target.BreakpointCreateByName(symbol, None)
+ address = bp.GetLocationAtIndex(0).GetAddress().GetFileAddress()
+ return address
+
+ def test_set_address_no_module(self):
+ self.build()
+
+ main_address = self.get_address_from_symbol("main")
+
+ tgt = lldbutil.run_to_breakpoint_make_target(self)
+ dbg = tgt.GetDebugger()
+
+ dbg.HandleCommand(f"break set -a {main_address:#x}")
+ self.assertTrue(tgt.GetNumBreakpoints() == 1)
+
+ bp = tgt.GetBreakpointAtIndex(0)
+ self.assertTrue(bp != None)
+
+ _, _, thread, _ = lldbutil.run_to_breakpoint_do_run(self, tgt, bp)
+ self.assertTrue(thread.GetNumFrames() >= 1)
+
+ thread_pc = thread.GetFrameAtIndex(0).GetPCAddress()
+ self.assertTrue(thread_pc != None)
+
+ self.assertTrue(main_address==thread_pc.GetFileAddress())
Index: lldb/test/API/commands/breakpoint/set/address-nomodule/Makefile
===================================================================
--- /dev/null
+++ lldb/test/API/commands/breakpoint/set/address-nomodule/Makefile
@@ -0,0 +1,3 @@
+C_SOURCES := inferior.c
+
+include Makefile.rules
Index: lldb/source/Commands/Options.td
===================================================================
--- lldb/source/Commands/Options.td
+++ lldb/source/Commands/Options.td
@@ -128,13 +128,15 @@
Arg<"AddressOrExpression">, Required,
Desc<"Set the breakpoint at the specified address. If the address maps "
"uniquely to a particular binary, then the address will be converted to "
- "a \"file\"address, so that the breakpoint will track that binary+offset "
+ "a \"file\" address, so that the breakpoint will track that binary+offset "
"no matter where the binary eventually loads. Alternately, if you also "
"specify the module - with the -s option - then the address will be "
"treated as a file address in that module, and resolved accordingly. "
"Again, this will allow lldb to track that offset on subsequent reloads. "
"The module need not have been loaded at the time you specify this "
- "breakpoint, and will get resolved when the module is loaded.">;
+ "breakpoint, and will get resolved when the module is loaded. If no "
+ "module is specified, the binary being debugged is considered as a "
+ "fallback.">;
def breakpoint_set_name : Option<"name", "n">, Group<3>, Arg<"FunctionName">,
Completion<"Symbol">, Required,
Desc<"Set the breakpoint by function name. Can be repeated multiple times "
Index: lldb/source/Breakpoint/BreakpointResolverAddress.cpp
===================================================================
--- lldb/source/Breakpoint/BreakpointResolverAddress.cpp
+++ lldb/source/Breakpoint/BreakpointResolverAddress.cpp
@@ -121,16 +121,27 @@
if (filter.AddressPasses(m_addr)) {
if (breakpoint.GetNumLocations() == 0) {
- // If the address is just an offset, and we're given a module, see if we
- // can find the appropriate module loaded in the binary, and fix up
- // m_addr to use that.
- if (!m_addr.IsSectionOffset() && m_module_filespec) {
+ // If the address is just an offset ...
+ if (!m_addr.IsSectionOffset()) {
+ ModuleSP containing_module_sp = nullptr;
Target &target = breakpoint.GetTarget();
- ModuleSpec module_spec(m_module_filespec);
- ModuleSP module_sp = target.GetImages().FindFirstModule(module_spec);
- if (module_sp) {
+ if (m_module_filespec) {
+ // ... and we're given a module, see if we can find the
+ // appropriate module loaded in the binary, and fix up
+ // m_addr to use that.
+ ModuleSpec module_spec(m_module_filespec);
+ containing_module_sp =
+ target.GetImages().FindFirstModule(module_spec);
+ } else {
+ // ... and we're not given a module, see if the offset is
+ // somewhere in the executable module. If it is, then we'll
+ // fix up m_addr to use that.
+ containing_module_sp = target.GetExecutableModule();
+ }
+ if (containing_module_sp) {
Address tmp_address;
- if (module_sp->ResolveFileAddress(m_addr.GetOffset(), tmp_address))
+ if (containing_module_sp->ResolveFileAddress(m_addr.GetOffset(),
+ tmp_address))
m_addr = tmp_address;
}
}
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