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linker: delete plan9 support
This experimental target was never fully completed. The operating system is not that interesting or popular anyway, and the maintainer is no longer around. Not worth the maintenance burden. This code can be resurrected later if it is worth it. In such case it will be subject to greater scrutiny.
This commit is contained in:
Andrew Kelley
parent
d1917b5c3a
commit
0b3c3c02e3
@ -612,8 +612,6 @@ set(ZIG_STAGE2_SOURCES
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src/link/MachO/synthetic.zig
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src/link/MachO/Thunk.zig
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src/link/MachO/uuid.zig
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src/link/Plan9.zig
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src/link/Plan9/aout.zig
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src/link/Queue.zig
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src/link/StringTable.zig
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src/link/Wasm.zig
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@ -125,7 +125,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try emit.dbgAdvancePCAndLine(emit.prev_di_line, emit.prev_di_column);
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},
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.plan9 => {},
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.none => {},
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}
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},
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@ -142,7 +141,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try emit.dbgAdvancePCAndLine(emit.prev_di_line, emit.prev_di_column);
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},
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.plan9 => {},
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.none => {},
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}
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},
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@ -200,7 +198,6 @@ fn dbgAdvancePCAndLine(emit: *Emit, line: u32, column: u32) Error!void {
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emit.prev_di_column = column;
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emit.prev_di_pc = emit.code.items.len;
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},
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.plan9 => {},
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.none => {},
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}
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}
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@ -179,7 +179,6 @@ fn mirDebugPrologueEnd(emit: *Emit) !void {
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try dbg_out.setPrologueEnd();
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try emit.dbgAdvancePCAndLine(emit.prev_di_line, emit.prev_di_column);
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},
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.plan9 => {},
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.none => {},
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}
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}
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@ -190,7 +189,6 @@ fn mirDebugEpilogueBegin(emit: *Emit) !void {
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try dbg_out.setEpilogueBegin();
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try emit.dbgAdvancePCAndLine(emit.prev_di_line, emit.prev_di_column);
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},
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.plan9 => {},
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.none => {},
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}
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}
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@ -82,7 +82,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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}),
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else => unreachable,
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},
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.plan9 => {},
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.none => {},
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}
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continue;
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@ -173,9 +172,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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coff_file.getAtom(atom).getSymbolIndex().?
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else |err|
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return emit.fail("{s} creating lazy symbol", .{@errorName(err)})
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else if (emit.bin_file.cast(.plan9)) |p9_file|
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p9_file.getOrCreateAtomForLazySymbol(emit.pt, lazy_sym) catch |err|
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return emit.fail("{s} creating lazy symbol", .{@errorName(err)})
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else
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return emit.fail("lazy symbols unimplemented for {s}", .{@tagName(emit.bin_file.tag)}),
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.is_extern = false,
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@ -418,7 +414,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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else => unreachable,
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.pseudo_dbg_prologue_end_none => switch (emit.debug_output) {
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.dwarf => |dwarf| try dwarf.setPrologueEnd(),
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_line_stmt_line_column => try emit.dbgAdvancePCAndLine(.{
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@ -439,7 +434,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try emit.dbgAdvancePCAndLine(emit.prev_di_loc);
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},
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_enter_block_none => switch (emit.debug_output) {
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@ -449,7 +443,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try dwarf.enterBlock(emit.code.items.len);
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},
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_leave_block_none => switch (emit.debug_output) {
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@ -459,7 +452,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try dwarf.leaveBlock(emit.code.items.len);
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},
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_enter_inline_func => switch (emit.debug_output) {
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@ -469,7 +461,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try dwarf.enterInlineFunc(mir_inst.data.ip_index, emit.code.items.len, emit.prev_di_loc.line, emit.prev_di_loc.column);
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},
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_leave_inline_func => switch (emit.debug_output) {
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@ -479,7 +470,6 @@ pub fn emitMir(emit: *Emit) Error!void {
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});
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try dwarf.leaveInlineFunc(mir_inst.data.ip_index, emit.code.items.len);
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},
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.plan9 => {},
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.none => {},
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},
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.pseudo_dbg_arg_none,
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@ -613,7 +603,7 @@ pub fn emitMir(emit: *Emit) Error!void {
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loc,
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);
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},
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.plan9, .none => local_index += 1,
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.none => local_index += 1,
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},
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.pseudo_dbg_arg_val, .pseudo_dbg_var_val => switch (emit.debug_output) {
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.dwarf => |dwarf| {
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@ -630,11 +620,10 @@ pub fn emitMir(emit: *Emit) Error!void {
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.fromInterned(mir_inst.data.ip_index),
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);
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},
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.plan9, .none => local_index += 1,
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.none => local_index += 1,
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},
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.pseudo_dbg_var_args_none => switch (emit.debug_output) {
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.dwarf => |dwarf| try dwarf.genVarArgsDebugInfo(),
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.plan9 => {},
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.none => {},
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},
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.pseudo_dead_none => {},
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@ -929,38 +918,6 @@ fn dbgAdvancePCAndLine(emit: *Emit, loc: Loc) Error!void {
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emit.prev_di_loc = loc;
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emit.prev_di_pc = emit.code.items.len;
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},
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.plan9 => |dbg_out| {
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if (delta_pc <= 0) return; // only do this when the pc changes
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// increasing the line number
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try link.File.Plan9.changeLine(&dbg_out.dbg_line, @intCast(delta_line));
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// increasing the pc
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const d_pc_p9 = @as(i64, @intCast(delta_pc)) - dbg_out.pc_quanta;
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if (d_pc_p9 > 0) {
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// minus one because if its the last one, we want to leave space to change the line which is one pc quanta
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var diff = @divExact(d_pc_p9, dbg_out.pc_quanta) - dbg_out.pc_quanta;
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while (diff > 0) {
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if (diff < 64) {
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try dbg_out.dbg_line.append(@intCast(diff + 128));
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diff = 0;
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} else {
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try dbg_out.dbg_line.append(@intCast(64 + 128));
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diff -= 64;
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}
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}
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if (dbg_out.pcop_change_index) |pci|
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dbg_out.dbg_line.items[pci] += 1;
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dbg_out.pcop_change_index = @intCast(dbg_out.dbg_line.items.len - 1);
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} else if (d_pc_p9 == 0) {
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// we don't need to do anything, because adding the pc quanta does it for us
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} else unreachable;
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if (dbg_out.start_line == null)
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dbg_out.start_line = emit.prev_di_loc.line;
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dbg_out.end_line = loc.line;
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// only do this if the pc changed
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emit.prev_di_loc = loc;
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emit.prev_di_pc = emit.code.items.len;
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},
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.none => {},
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}
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}
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@ -2004,7 +2004,6 @@ pub fn emit(
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const atom = try cf.getOrCreateAtomForNav(nav);
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break :sym cf.getAtom(atom).getSymbolIndex().?;
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}
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if (lf.cast(.plan9)) |p9f| break :sym try p9f.seeNav(pt, nav);
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unreachable;
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},
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.debug_output = debug_output,
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@ -2015,7 +2014,6 @@ pub fn emit(
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.column = func.lbrace_column,
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.is_stmt = switch (debug_output) {
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.dwarf => |dwarf| dwarf.dwarf.debug_line.header.default_is_stmt,
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.plan9 => undefined,
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.none => undefined,
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},
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},
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@ -2067,8 +2065,6 @@ pub fn emitLazy(
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return zcu.codegenFailType(lazy_sym.ty, "{s} creating lazy symbol", .{@errorName(err)});
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break :sym cf.getAtom(atom).getSymbolIndex().?;
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}
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if (lf.cast(.plan9)) |p9f| break :sym p9f.getOrCreateAtomForLazySymbol(pt, lazy_sym) catch |err|
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return zcu.codegenFailType(lazy_sym.ty, "{s} creating lazy symbol", .{@errorName(err)});
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unreachable;
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},
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.debug_output = debug_output,
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@ -997,8 +997,6 @@ pub fn genNavRef(
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},
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.link_once => unreachable,
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}
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} else if (lf.cast(.plan9)) |p9| {
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return .{ .sym_index = try p9.seeNav(pt, nav_index) };
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} else {
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const msg = try ErrorMsg.create(zcu.gpa, src_loc, "TODO genNavRef for target {}", .{target});
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return .{ .fail = msg };
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24
src/link.zig
24
src/link.zig
@ -530,6 +530,7 @@ pub const File = struct {
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return &lld.base;
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}
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switch (Tag.fromObjectFormat(comp.root_mod.resolved_target.result.ofmt)) {
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.plan9 => return error.UnsupportedObjectFormat,
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inline else => |tag| {
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dev.check(tag.devFeature());
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const ptr = try tag.Type().open(arena, comp, emit, options);
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@ -552,6 +553,7 @@ pub const File = struct {
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return &lld.base;
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}
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switch (Tag.fromObjectFormat(comp.root_mod.resolved_target.result.ofmt)) {
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.plan9 => return error.UnsupportedObjectFormat,
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inline else => |tag| {
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dev.check(tag.devFeature());
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const ptr = try tag.Type().createEmpty(arena, comp, emit, options);
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@ -571,7 +573,7 @@ pub const File = struct {
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const gpa = comp.gpa;
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switch (base.tag) {
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.lld => assert(base.file == null),
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.coff, .elf, .macho, .plan9, .wasm, .goff, .xcoff => {
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.coff, .elf, .macho, .wasm, .goff, .xcoff => {
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if (base.file != null) return;
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dev.checkAny(&.{ .coff_linker, .elf_linker, .macho_linker, .plan9_linker, .wasm_linker, .goff_linker, .xcoff_linker });
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const emit = base.emit;
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@ -612,6 +614,7 @@ pub const File = struct {
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});
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},
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.c, .spirv => dev.checkAny(&.{ .c_linker, .spirv_linker }),
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.plan9 => unreachable,
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}
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}
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@ -659,7 +662,7 @@ pub const File = struct {
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}
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}
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},
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.coff, .macho, .plan9, .wasm, .goff, .xcoff => if (base.file) |f| {
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.coff, .macho, .wasm, .goff, .xcoff => if (base.file) |f| {
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dev.checkAny(&.{ .coff_linker, .macho_linker, .plan9_linker, .wasm_linker, .goff_linker, .xcoff_linker });
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f.close();
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base.file = null;
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@ -675,12 +678,12 @@ pub const File = struct {
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}
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},
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.c, .spirv => dev.checkAny(&.{ .c_linker, .spirv_linker }),
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.plan9 => unreachable,
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}
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}
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pub const DebugInfoOutput = union(enum) {
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dwarf: *Dwarf.WipNav,
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plan9: *Plan9.DebugInfoOutput,
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none,
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};
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pub const UpdateDebugInfoError = Dwarf.UpdateError;
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@ -699,7 +702,6 @@ pub const File = struct {
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log.debug("getGlobalSymbol '{s}' (expected in '{?s}')", .{ name, lib_name });
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switch (base.tag) {
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.lld => unreachable,
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.plan9 => unreachable,
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.spirv => unreachable,
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.c => unreachable,
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inline else => |tag| {
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@ -717,6 +719,7 @@ pub const File = struct {
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assert(nav.status == .fully_resolved);
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switch (base.tag) {
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.lld => unreachable,
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).updateNav(pt, nav_index);
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@ -759,6 +762,7 @@ pub const File = struct {
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switch (base.tag) {
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.lld => unreachable,
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.spirv => unreachable, // see corresponding special case in `Zcu.PerThread.runCodegenInner`
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).updateFunc(pt, func_index, mir);
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@ -788,6 +792,7 @@ pub const File = struct {
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.lld => unreachable,
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.spirv => {},
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.goff, .xcoff => {},
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).updateLineNumber(pt, ti_id);
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@ -812,6 +817,7 @@ pub const File = struct {
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base.releaseLock();
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if (base.file) |f| f.close();
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switch (base.tag) {
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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@as(*tag.Type(), @fieldParentPtr("base", base)).deinit();
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@ -851,6 +857,7 @@ pub const File = struct {
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}
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assert(base.post_prelink);
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switch (base.tag) {
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).flush(arena, tid, prog_node);
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@ -877,6 +884,7 @@ pub const File = struct {
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assert(base.comp.zcu.?.llvm_object == null);
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switch (base.tag) {
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.lld => unreachable,
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).updateExports(pt, exported, export_indices);
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@ -911,6 +919,7 @@ pub const File = struct {
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.spirv => unreachable,
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.wasm => unreachable,
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.goff, .xcoff => unreachable,
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).getNavVAddr(pt, nav_index, reloc_info);
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@ -933,6 +942,7 @@ pub const File = struct {
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.spirv => unreachable,
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.wasm => unreachable,
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.goff, .xcoff => unreachable,
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).lowerUav(pt, decl_val, decl_align, src_loc);
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@ -949,6 +959,7 @@ pub const File = struct {
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.spirv => unreachable,
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.wasm => unreachable,
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.goff, .xcoff => unreachable,
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.plan9 => unreachable,
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inline else => |tag| {
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dev.check(tag.devFeature());
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return @as(*tag.Type(), @fieldParentPtr("base", base)).getUavVAddr(decl_val, reloc_info);
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@ -965,8 +976,8 @@ pub const File = struct {
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assert(base.comp.zcu.?.llvm_object == null);
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switch (base.tag) {
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.lld => unreachable,
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.plan9 => unreachable,
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.plan9,
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.spirv,
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.goff,
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.xcoff,
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@ -1116,10 +1127,10 @@ pub const File = struct {
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.c => C,
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.wasm => Wasm,
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.spirv => SpirV,
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.plan9 => Plan9,
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.goff => Goff,
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.xcoff => Xcoff,
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.lld => Lld,
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.plan9 => comptime unreachable,
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};
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}
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@ -1211,7 +1222,6 @@ pub const File = struct {
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pub const Lld = @import("link/Lld.zig");
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pub const C = @import("link/C.zig");
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pub const Coff = @import("link/Coff.zig");
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pub const Plan9 = @import("link/Plan9.zig");
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pub const Elf = @import("link/Elf.zig");
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pub const MachO = @import("link/MachO.zig");
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pub const SpirV = @import("link/SpirV.zig");
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@ -950,7 +950,6 @@ pub fn getNavVAddr(
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.target_sym = this_sym_index,
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.target_off = reloc_info.addend,
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}),
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.plan9 => unreachable,
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.none => unreachable,
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},
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}
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@ -983,7 +982,6 @@ pub fn getUavVAddr(
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.target_sym = sym_index,
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.target_off = reloc_info.addend,
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}),
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.plan9 => unreachable,
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.none => unreachable,
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},
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}
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@ -650,7 +650,6 @@ pub fn getNavVAddr(
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.target_sym = sym_index,
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.target_off = reloc_info.addend,
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}),
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.plan9 => unreachable,
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.none => unreachable,
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},
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}
|
||||
@ -690,7 +689,6 @@ pub fn getUavVAddr(
|
||||
.target_sym = sym_index,
|
||||
.target_off = reloc_info.addend,
|
||||
}),
|
||||
.plan9 => unreachable,
|
||||
.none => unreachable,
|
||||
},
|
||||
}
|
||||
|
||||
1426
src/link/Plan9.zig
1426
src/link/Plan9.zig
File diff suppressed because it is too large
Load Diff
@ -1,131 +0,0 @@
|
||||
const std = @import("std");
|
||||
const assert = std.debug.assert;
|
||||
|
||||
/// All integers are in big-endian format (needs a byteswap).
|
||||
pub const ExecHdr = extern struct {
|
||||
magic: u32,
|
||||
text: u32,
|
||||
data: u32,
|
||||
bss: u32,
|
||||
syms: u32,
|
||||
/// You should truncate this to 32 bits on 64 bit systems, then but the actual 8 bytes
|
||||
/// in the fat header.
|
||||
entry: u32,
|
||||
spsz: u32,
|
||||
pcsz: u32,
|
||||
comptime {
|
||||
assert(@sizeOf(@This()) == 32);
|
||||
}
|
||||
/// It is up to the caller to discard the last 8 bytes if the header is not fat.
|
||||
pub fn toU8s(self: *@This()) [40]u8 {
|
||||
var buf: [40]u8 = undefined;
|
||||
var i: u8 = 0;
|
||||
inline for (std.meta.fields(@This())) |f| {
|
||||
std.mem.writeInt(u32, buf[i..][0..4], @field(self, f.name), .big);
|
||||
i += 4;
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
};
|
||||
|
||||
pub const Sym = struct {
|
||||
/// Big endian in the file
|
||||
value: u64,
|
||||
type: Type,
|
||||
name: []const u8,
|
||||
|
||||
pub const undefined_symbol: Sym = .{
|
||||
.value = undefined,
|
||||
.type = .bad,
|
||||
.name = "undefined_symbol",
|
||||
};
|
||||
|
||||
/// The type field is one of the following characters with the
|
||||
/// high bit set:
|
||||
/// T text segment symbol
|
||||
/// t static text segment symbol
|
||||
/// L leaf function text segment symbol
|
||||
/// l static leaf function text segment symbol
|
||||
/// D data segment symbol
|
||||
/// d static data segment symbol
|
||||
/// B bss segment symbol
|
||||
/// b static bss segment symbol
|
||||
/// a automatic (local) variable symbol
|
||||
/// p function parameter symbol
|
||||
/// f source file name components
|
||||
/// z source file name
|
||||
/// Z source file line offset
|
||||
/// m for '.frame'
|
||||
pub const Type = enum(u8) {
|
||||
T = 0x80 | 'T',
|
||||
t = 0x80 | 't',
|
||||
L = 0x80 | 'L',
|
||||
l = 0x80 | 'l',
|
||||
D = 0x80 | 'D',
|
||||
d = 0x80 | 'd',
|
||||
B = 0x80 | 'B',
|
||||
b = 0x80 | 'b',
|
||||
a = 0x80 | 'a',
|
||||
p = 0x80 | 'p',
|
||||
f = 0x80 | 'f',
|
||||
z = 0x80 | 'z',
|
||||
Z = 0x80 | 'Z',
|
||||
m = 0x80 | 'm',
|
||||
/// represents an undefined symbol, to be removed in flush
|
||||
bad = 0,
|
||||
|
||||
pub fn toGlobal(self: Type) Type {
|
||||
return switch (self) {
|
||||
.t => .T,
|
||||
.b => .B,
|
||||
.d => .D,
|
||||
else => unreachable,
|
||||
};
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
pub const HDR_MAGIC = 0x00008000;
|
||||
pub inline fn _MAGIC(f: anytype, b: anytype) @TypeOf(f | ((((@as(c_int, 4) * b) + @as(c_int, 0)) * b) + @as(c_int, 7))) {
|
||||
return f | ((((@as(c_int, 4) * b) + @as(c_int, 0)) * b) + @as(c_int, 7));
|
||||
}
|
||||
pub const A_MAGIC = _MAGIC(0, 8); // 68020
|
||||
pub const I_MAGIC = _MAGIC(0, 11); // intel 386
|
||||
pub const J_MAGIC = _MAGIC(0, 12); // intel 960 (retired)
|
||||
pub const K_MAGIC = _MAGIC(0, 13); // sparc
|
||||
pub const V_MAGIC = _MAGIC(0, 16); // mips 3000 BE
|
||||
pub const X_MAGIC = _MAGIC(0, 17); // att dsp 3210 (retired)
|
||||
pub const M_MAGIC = _MAGIC(0, 18); // mips 4000 BE
|
||||
pub const D_MAGIC = _MAGIC(0, 19); // amd 29000 (retired)
|
||||
pub const E_MAGIC = _MAGIC(0, 20); // arm
|
||||
pub const Q_MAGIC = _MAGIC(0, 21); // powerpc
|
||||
pub const N_MAGIC = _MAGIC(0, 22); // mips 4000 LE
|
||||
pub const L_MAGIC = _MAGIC(0, 23); // dec alpha (retired)
|
||||
pub const P_MAGIC = _MAGIC(0, 24); // mips 3000 LE
|
||||
pub const U_MAGIC = _MAGIC(0, 25); // sparc64
|
||||
pub const S_MAGIC = _MAGIC(HDR_MAGIC, 26); // amd64
|
||||
pub const T_MAGIC = _MAGIC(HDR_MAGIC, 27); // powerpc64
|
||||
pub const R_MAGIC = _MAGIC(HDR_MAGIC, 28); // arm64
|
||||
|
||||
pub fn magicFromArch(arch: std.Target.Cpu.Arch) !u32 {
|
||||
return switch (arch) {
|
||||
.x86 => I_MAGIC,
|
||||
.sparc => K_MAGIC, // TODO should sparc64 go here?
|
||||
.mips => V_MAGIC,
|
||||
.arm => E_MAGIC,
|
||||
.aarch64 => R_MAGIC,
|
||||
.powerpc => Q_MAGIC,
|
||||
.powerpc64 => T_MAGIC,
|
||||
.x86_64 => S_MAGIC,
|
||||
else => error.ArchNotSupportedByPlan9,
|
||||
};
|
||||
}
|
||||
|
||||
/// gets the quantization of pc for the arch
|
||||
pub fn getPCQuant(arch: std.Target.Cpu.Arch) !u8 {
|
||||
return switch (arch) {
|
||||
.x86, .x86_64 => 1,
|
||||
.powerpc, .powerpc64, .mips, .sparc, .arm, .aarch64 => 4,
|
||||
else => error.ArchNotSupportedByPlan9,
|
||||
};
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user