| 1 | //===-- Breakpoint.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 "Breakpoint.h" |
| 10 | #include "DAP.h" |
| 11 | #include "JSONUtils.h" |
| 12 | #include "llvm/ADT/StringExtras.h" |
| 13 | |
| 14 | using namespace lldb_dap; |
| 15 | |
| 16 | void Breakpoint::SetCondition() { bp.SetCondition(condition.c_str()); } |
| 17 | |
| 18 | void Breakpoint::SetHitCondition() { |
| 19 | uint64_t hitCount = 0; |
| 20 | if (llvm::to_integer(S: hitCondition, Num&: hitCount)) |
| 21 | bp.SetIgnoreCount(hitCount - 1); |
| 22 | } |
| 23 | |
| 24 | void Breakpoint::CreateJsonObject(llvm::json::Object &object) { |
| 25 | // Each breakpoint location is treated as a separate breakpoint for VS code. |
| 26 | // They don't have the notion of a single breakpoint with multiple locations. |
| 27 | if (!bp.IsValid()) |
| 28 | return; |
| 29 | object.try_emplace(K: "verified", Args: bp.GetNumResolvedLocations() > 0); |
| 30 | object.try_emplace(K: "id", Args: bp.GetID()); |
| 31 | // VS Code DAP doesn't currently allow one breakpoint to have multiple |
| 32 | // locations so we just report the first one. If we report all locations |
| 33 | // then the IDE starts showing the wrong line numbers and locations for |
| 34 | // other source file and line breakpoints in the same file. |
| 35 | |
| 36 | // Below we search for the first resolved location in a breakpoint and report |
| 37 | // this as the breakpoint location since it will have a complete location |
| 38 | // that is at least loaded in the current process. |
| 39 | lldb::SBBreakpointLocation bp_loc; |
| 40 | const auto num_locs = bp.GetNumLocations(); |
| 41 | for (size_t i = 0; i < num_locs; ++i) { |
| 42 | bp_loc = bp.GetLocationAtIndex(index: i); |
| 43 | if (bp_loc.IsResolved()) |
| 44 | break; |
| 45 | } |
| 46 | // If not locations are resolved, use the first location. |
| 47 | if (!bp_loc.IsResolved()) |
| 48 | bp_loc = bp.GetLocationAtIndex(index: 0); |
| 49 | auto bp_addr = bp_loc.GetAddress(); |
| 50 | |
| 51 | if (bp_addr.IsValid()) { |
| 52 | std::string formatted_addr = |
| 53 | "0x"+ llvm::utohexstr(X: bp_addr.GetLoadAddress(target: g_dap.target)); |
| 54 | object.try_emplace(K: "instructionReference", Args&: formatted_addr); |
| 55 | auto line_entry = bp_addr.GetLineEntry(); |
| 56 | const auto line = line_entry.GetLine(); |
| 57 | if (line != UINT32_MAX) |
| 58 | object.try_emplace(K: "line", Args: line); |
| 59 | const auto column = line_entry.GetColumn(); |
| 60 | if (column != 0) |
| 61 | object.try_emplace(K: "column", Args: column); |
| 62 | object.try_emplace(K: "source", Args: CreateSource(line_entry)); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | bool Breakpoint::MatchesName(const char *name) { return bp.MatchesName(name); } |
| 67 | |
| 68 | void Breakpoint::SetBreakpoint() { |
| 69 | // See comments in BreakpointBase::GetBreakpointLabel() for details of why |
| 70 | // we add a label to our breakpoints. |
| 71 | bp.AddName(new_name: GetBreakpointLabel()); |
| 72 | if (!condition.empty()) |
| 73 | SetCondition(); |
| 74 | if (!hitCondition.empty()) |
| 75 | SetHitCondition(); |
| 76 | } |
| 77 |