| 1 | //===-- SetInstructionBreakpointsRequestHandler.cpp -----------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "DAP.h" |
| 10 | #include "EventHelper.h" |
| 11 | #include "RequestHandler.h" |
| 12 | |
| 13 | namespace lldb_dap { |
| 14 | |
| 15 | /// Replaces all existing instruction breakpoints. Typically, instruction |
| 16 | /// breakpoints would be set from a disassembly window. To clear all instruction |
| 17 | /// breakpoints, specify an empty array. When an instruction breakpoint is hit, |
| 18 | /// a stopped event (with reason instruction breakpoint) is generated. Clients |
| 19 | /// should only call this request if the corresponding capability |
| 20 | /// supportsInstructionBreakpoints is true. |
| 21 | llvm::Expected<protocol::SetInstructionBreakpointsResponseBody> |
| 22 | SetInstructionBreakpointsRequestHandler::Run( |
| 23 | const protocol::SetInstructionBreakpointsArguments &args) const { |
| 24 | std::vector<protocol::Breakpoint> response_breakpoints; |
| 25 | |
| 26 | // Disable any instruction breakpoints that aren't in this request. |
| 27 | // There is no call to remove instruction breakpoints other than calling this |
| 28 | // function with a smaller or empty "breakpoints" list. |
| 29 | llvm::DenseSet<lldb::addr_t> seen( |
| 30 | llvm::from_range, llvm::make_first_range(c&: dap.instruction_breakpoints)); |
| 31 | |
| 32 | for (const auto &bp : args.breakpoints) { |
| 33 | // Read instruction breakpoint request. |
| 34 | InstructionBreakpoint inst_bp(dap, bp); |
| 35 | const auto [iv, inserted] = dap.instruction_breakpoints.try_emplace( |
| 36 | Key: inst_bp.GetInstructionAddressReference(), Args&: dap, Args: bp); |
| 37 | if (inserted) |
| 38 | iv->second.SetBreakpoint(); |
| 39 | else |
| 40 | iv->second.UpdateBreakpoint(request_bp: inst_bp); |
| 41 | response_breakpoints.push_back(x: iv->second.ToProtocolBreakpoint()); |
| 42 | seen.erase(V: inst_bp.GetInstructionAddressReference()); |
| 43 | } |
| 44 | |
| 45 | for (const auto &addr : seen) { |
| 46 | auto inst_bp = dap.instruction_breakpoints.find(Val: addr); |
| 47 | if (inst_bp == dap.instruction_breakpoints.end()) |
| 48 | continue; |
| 49 | dap.target.BreakpointDelete(break_id: inst_bp->second.GetID()); |
| 50 | dap.instruction_breakpoints.erase(Val: addr); |
| 51 | } |
| 52 | |
| 53 | return protocol::SetInstructionBreakpointsResponseBody{ |
| 54 | .breakpoints: std::move(response_breakpoints)}; |
| 55 | } |
| 56 | |
| 57 | } // namespace lldb_dap |
| 58 |