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aarch64: implement airCall for COFF

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This commit is contained in:
Jakub Konka 2022-11-04 12:44:12 +01:00
parent 1fe0b58942
commit 62ae365308
1 changed files with 38 additions and 0 deletions
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38
src/arch/aarch64/CodeGen.zig
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@ -4061,6 +4061,44 @@ fn airCall(self: *Self, inst: Air.Inst.Index, modifier: std.builtin.CallOptions.
} else {
return self.fail("TODO implement calling bitcasted functions", .{});
}
} else if (self.bin_file.cast(link.File.Coff)) |coff_file| {
if (func_value.castTag(.function)) |func_payload| {
const func = func_payload.data;
const fn_owner_decl = mod.declPtr(func.owner_decl);
try self.genSetReg(Type.initTag(.u64), .x30, .{
.linker_load = .{
.@"type" = .got,
.sym_index = fn_owner_decl.link.coff.sym_index,
},
});
// blr x30
_ = try self.addInst(.{
.tag = .blr,
.data = .{ .reg = .x30 },
});
} else if (func_value.castTag(.extern_fn)) |func_payload| {
const extern_fn = func_payload.data;
const decl_name = mod.declPtr(extern_fn.owner_decl).name;
if (extern_fn.lib_name) |lib_name| {
log.debug("TODO enforce that '{s}' is expected in '{s}' library", .{
decl_name,
lib_name,
});
}
const sym_index = try coff_file.getGlobalSymbol(mem.sliceTo(decl_name, 0));
_ = try self.addInst(.{
.tag = .call_extern,
.data = .{
.relocation = .{
.atom_index = mod.declPtr(self.mod_fn.owner_decl).link.coff.sym_index,
.sym_index = sym_index,
},
},
});
} else {
return self.fail("TODO implement calling bitcasted functions", .{});
}
} else if (self.bin_file.cast(link.File.Plan9)) |p9| {
if (func_value.castTag(.function)) |func_payload| {
try p9.seeDecl(func_payload.data.owner_decl);