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x86_64: implement calling function references

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This commit is contained in:
Jacob Young 2023-05-13 02:51:46 -04:00
parent 57c38f6433
commit 904ffb41de
4 changed files with 11 additions and 10 deletions
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18
src/arch/x86_64/CodeGen.zig
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@ -7378,11 +7378,15 @@ fn airCall(self: *Self, inst: Air.Inst.Index, modifier: std.builtin.CallModifier
// on linking.
const mod = self.bin_file.options.module.?;
if (self.air.value(callee)) |func_value| {
if (func_value.castTag(.function)) |func_payload| {
const func = func_payload.data;
if (if (func_value.castTag(.function)) |func_payload|
func_payload.data.owner_decl
else if (func_value.castTag(.decl_ref)) |decl_ref_payload|
decl_ref_payload.data
else
null) |owner_decl|
{
if (self.bin_file.cast(link.File.Elf)) |elf_file| {
const atom_index = try elf_file.getOrCreateAtomForDecl(func.owner_decl);
const atom_index = try elf_file.getOrCreateAtomForDecl(owner_decl);
const atom = elf_file.getAtom(atom_index);
_ = try atom.getOrCreateOffsetTableEntry(elf_file);
const got_addr = atom.getOffsetTableAddress(elf_file);
@ -7391,17 +7395,17 @@ fn airCall(self: *Self, inst: Air.Inst.Index, modifier: std.builtin.CallModifier
.disp = @intCast(i32, got_addr),
}));
} else if (self.bin_file.cast(link.File.Coff)) |coff_file| {
const atom = try coff_file.getOrCreateAtomForDecl(func.owner_decl);
const atom = try coff_file.getOrCreateAtomForDecl(owner_decl);
const sym_index = coff_file.getAtom(atom).getSymbolIndex().?;
try self.genSetReg(.rax, Type.usize, .{ .lea_got = sym_index });
try self.asmRegister(.{ ._, .call }, .rax);
} else if (self.bin_file.cast(link.File.MachO)) |macho_file| {
const atom = try macho_file.getOrCreateAtomForDecl(func.owner_decl);
const atom = try macho_file.getOrCreateAtomForDecl(owner_decl);
const sym_index = macho_file.getAtom(atom).getSymbolIndex().?;
try self.genSetReg(.rax, Type.usize, .{ .lea_got = sym_index });
try self.asmRegister(.{ ._, .call }, .rax);
} else if (self.bin_file.cast(link.File.Plan9)) |p9| {
const decl_block_index = try p9.seeDecl(func.owner_decl);
const decl_block_index = try p9.seeDecl(owner_decl);
const decl_block = p9.getDeclBlock(decl_block_index);
const ptr_bits = self.target.cpu.arch.ptrBitWidth();
const ptr_bytes: u64 = @divExact(ptr_bits, 8);

1
test/behavior/bugs/1277.zig
View File

@ -14,7 +14,6 @@ fn f() i32 {
test "don't emit an LLVM global for a const function when it's in an optional in a struct" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;

1
test/behavior/bugs/12801-2.zig
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@ -16,7 +16,6 @@ const Auto = struct {
test {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;

1
test/behavior/fn.zig
View File

@ -502,7 +502,6 @@ test "method call with optional pointer first param" {
}
test "using @ptrCast on function pointers" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO