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| author | Jacob G-W <jacoblevgw@gmail.com> | 2021-07-10 20:56:30 -0400 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2021-07-11 01:58:26 -0400 |
| commit | 968d1ecf17c0a0774d43965332d00d4ad39743b9 (patch) | |
| tree | b76eadf8b7d8c27fbff9ed1c48efdd218659854d /src/codegen.zig | |
| parent | 40764650afd47f2ca2d191ed4d910f680702e014 (diff) | |
| download | zig-968d1ecf17c0a0774d43965332d00d4ad39743b9.tar.gz zig-968d1ecf17c0a0774d43965332d00d4ad39743b9.zip | |
stage2 plan9: add aarch64 support
Diffstat (limited to 'src/codegen.zig')
| -rw-r--r-- | src/codegen.zig | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/codegen.zig b/src/codegen.zig index 96a24195ee..6050fe0ed8 100644 --- a/src/codegen.zig +++ b/src/codegen.zig @@ -2607,6 +2607,56 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type { return self.fail(inst.base.src, "TODO implement calling runtime known function pointer", .{}); } }, + .aarch64 => { + for (info.args) |mc_arg, arg_i| { + const arg = inst.args[arg_i]; + const arg_mcv = try self.resolveInst(inst.args[arg_i]); + + switch (mc_arg) { + .none => continue, + .undef => unreachable, + .immediate => unreachable, + .unreach => unreachable, + .dead => unreachable, + .embedded_in_code => unreachable, + .memory => unreachable, + .compare_flags_signed => unreachable, + .compare_flags_unsigned => unreachable, + .register => |reg| { + try self.register_manager.getReg(reg, null); + try self.genSetReg(arg.src, arg.ty, reg, arg_mcv); + }, + .stack_offset => { + return self.fail(inst.base.src, "TODO implement calling with parameters in memory", .{}); + }, + .ptr_stack_offset => { + return self.fail(inst.base.src, "TODO implement calling with MCValue.ptr_stack_offset arg", .{}); + }, + .ptr_embedded_in_code => { + return self.fail(inst.base.src, "TODO implement calling with MCValue.ptr_embedded_in_code arg", .{}); + }, + } + } + if (inst.func.value()) |func_value| { + if (func_value.castTag(.function)) |func_payload| { + const ptr_bits = self.target.cpu.arch.ptrBitWidth(); + const ptr_bytes: u64 = @divExact(ptr_bits, 8); + const got_addr = p9.bases.data; + const got_index = func_payload.data.owner_decl.link.plan9.got_index.?; + const fn_got_addr = got_addr + got_index * ptr_bytes; + + try self.genSetReg(inst.base.src, Type.initTag(.usize), .x30, .{ .memory = fn_got_addr }); + + writeInt(u32, try self.code.addManyAsArray(4), Instruction.blr(.x30).toU32()); + } else if (func_value.castTag(.extern_fn)) |_| { + return self.fail(inst.base.src, "TODO implement calling extern functions", .{}); + } else { + return self.fail(inst.base.src, "TODO implement calling bitcasted functions", .{}); + } + } else { + return self.fail(inst.base.src, "TODO implement calling runtime known function pointer", .{}); + } + }, else => return self.fail(inst.base.src, "TODO implement call on plan9 for {}", .{self.target.cpu.arch}), } } else unreachable; |