diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/sparcv9/CodeGen.zig | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/arch/sparcv9/CodeGen.zig b/src/arch/sparcv9/CodeGen.zig index 6176be73a3..35d9a78dcd 100644 --- a/src/arch/sparcv9/CodeGen.zig +++ b/src/arch/sparcv9/CodeGen.zig @@ -780,6 +780,8 @@ fn airArg(self: *Self, inst: Air.Inst.Index) !void { // TODO Copy registers to the stack const mcv = result; + try self.genArgDbgInfo(inst, mcv, @intCast(u32, arg_index)); + if (self.liveness.isUnused(inst)) return self.finishAirBookkeeping(); @@ -1038,6 +1040,26 @@ fn airSwitch(self: *Self, inst: Air.Inst.Index) !void { // Common helper functions +/// Adds a Type to the .debug_info at the current position. The bytes will be populated later, +/// after codegen for this symbol is done. +fn addDbgInfoTypeReloc(self: *Self, ty: Type) !void { + switch (self.debug_output) { + .dwarf => |dw| { + assert(ty.hasRuntimeBits()); + const dbg_info = &dw.dbg_info; + const index = dbg_info.items.len; + try dbg_info.resize(index + 4); // DW.AT.type, DW.FORM.ref4 + const mod = self.bin_file.options.module.?; + const atom = switch (self.bin_file.tag) { + .elf => &mod.declPtr(self.mod_fn.owner_decl).link.elf.dbg_info_atom, + else => unreachable, + }; + try dw.addTypeReloc(atom, ty, @intCast(u32, index), null); + }, + else => {}, + } +} + fn addInst(self: *Self, inst: Mir.Inst) error{OutOfMemory}!Mir.Inst.Index { const gpa = self.gpa; try self.mir_instructions.ensureUnusedCapacity(gpa, 1); @@ -1166,6 +1188,40 @@ fn finishAir(self: *Self, inst: Air.Inst.Index, result: MCValue, operands: [Live self.finishAirBookkeeping(); } +fn genArgDbgInfo(self: *Self, inst: Air.Inst.Index, mcv: MCValue, arg_index: u32) !void { + const ty = self.air.instructions.items(.data)[inst].ty; + const name = self.mod_fn.getParamName(arg_index); + const name_with_null = name.ptr[0 .. name.len + 1]; + + switch (mcv) { + .register => |reg| { + switch (self.debug_output) { + .dwarf => |dw| { + const dbg_info = &dw.dbg_info; + try dbg_info.ensureUnusedCapacity(3); + dbg_info.appendAssumeCapacity(@enumToInt(link.File.Dwarf.AbbrevKind.parameter)); + dbg_info.appendSliceAssumeCapacity(&[2]u8{ // DW.AT.location, DW.FORM.exprloc + 1, // ULEB128 dwarf expression length + reg.dwarfLocOp(), + }); + try dbg_info.ensureUnusedCapacity(5 + name_with_null.len); + try self.addDbgInfoTypeReloc(ty); // DW.AT.type, DW.FORM.ref4 + dbg_info.appendSliceAssumeCapacity(name_with_null); // DW.AT.name, DW.FORM.string + }, + else => {}, + } + }, + .stack_offset => |offset| { + _ = offset; + switch (self.debug_output) { + .dwarf => {}, + else => {}, + } + }, + else => {}, + } +} + fn genLoad(self: *Self, value_reg: Register, addr_reg: Register, comptime off_type: type, off: off_type, abi_size: u64) !void { assert(off_type == Register or off_type == i13); |