authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2020-05-17 12:08:47-04:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2020-05-17 12:08:47-04:00
log88c8ff6e374334e538a686781d608c1b204aeb45
treebf0c2c108b4c2a79ac6b8819c1ba4053c4236508
parente198eec76a478fa9d1cb7b6d7488e273a0d15ff1

move some files around

6 files changed, 104 insertions(+), 91 deletions(-)

src-self-hosted/backend.zig deleted-2
......@@ -1,2 +0,0 @@
1pub const x86_64 = @import("backend/x86_64.zig");
2pub const x86 = @import("backend/x86.zig");
src-self-hosted/backend/x86.zig deleted-30
......@@ -1,30 +0,0 @@
1// zig fmt: off
2pub const Register = enum(u8) {
3 // 0 through 7, 32-bit registers. id is int value
4 eax, ecx, edx, ebx, esp, ebp, esi, edi,
5
6 // 8-15, 16-bit registers. id is int value - 8.
7 ax, cx, dx, bx, sp, bp, si, di,
8
9 // 16-23, 8-bit registers. id is int value - 16.
10 al, bl, cl, dl, ah, ch, dh, bh,
11
12 /// Returns the bit-width of the register.
13 pub fn size(self: @This()) u7 {
14 return switch (@enumToInt(self)) {
15 0...7 => 32,
16 8...15 => 16,
17 16...23 => 8,
18 else => unreachable,
19 };
20 }
21
22 /// Returns the register's id. This is used in practically every opcode the
23 /// x86 has. It is embedded in some instructions, such as the `B8 +rd` move
24 /// instruction, and is used in the R/M byte.
25 pub fn id(self: @This()) u3 {
26 return @truncate(u3, @enumToInt(self));
27 }
28};
29
30// zig fmt: on
src-self-hosted/backend/x86_64.zig deleted-53
......@@ -1,53 +0,0 @@
1// zig fmt: off
2pub const Register = enum(u8) {
3 // 0 through 15, 64-bit registers. 8-15 are extended.
4 // id is just the int value.
5 rax, rcx, rdx, rbx, rsp, rbp, rsi, rdi,
6 r8, r9, r10, r11, r12, r13, r14, r15,
7
8 // 16 through 31, 32-bit registers. 24-31 are extended.
9 // id is int value - 16.
10 eax, ecx, edx, ebx, esp, ebp, esi, edi,
11 r8d, r9d, r10d, r11d, r12d, r13d, r14d, r15d,
12
13 // 32-47, 16-bit registers. 40-47 are extended.
14 // id is int value - 32.
15 ax, cx, dx, bx, sp, bp, si, di,
16 r8w, r9w, r10w, r11w, r12w, r13w, r14w, r15w,
17
18 // 48-63, 8-bit registers. 56-63 are extended.
19 // id is int value - 48.
20 al, bl, cl, dl, ah, ch, dh, bh,
21 r8b, r9b, r10b, r11b, r12b, r13b, r14b, r15b,
22
23 /// Returns the bit-width of the register.
24 pub fn size(self: @This()) u7 {
25 return switch (@enumToInt(self)) {
26 0...15 => 64,
27 16...31 => 32,
28 32...47 => 16,
29 48...64 => 8,
30 else => unreachable,
31 };
32 }
33
34 /// Returns whether the register is *extended*. Extended registers are the
35 /// new registers added with amd64, r8 through r15. This also includes any
36 /// other variant of access to those registers, such as r8b, r15d, and so
37 /// on. This is needed because access to these registers requires special
38 /// handling via the REX prefix, via the B or R bits, depending on context.
39 pub fn isExtended(self: @This()) bool {
40 return @enumToInt(self) & 0x08 != 0;
41 }
42
43 /// This returns the 4-bit register ID, which is used in practically every
44 /// opcode. Note that bit 3 (the highest bit) is *never* used directly in
45 /// an instruction (@see isExtended), and requires special handling. The
46 /// lower three bits are often embedded directly in instructions (such as
47 /// the B8 variant of moves), or used in R/M bytes.
48 pub fn id(self: @This()) u4 {
49 return @truncate(u4, @enumToInt(self));
50 }
51};
52
53// zig fmt: on
src-self-hosted/codegen.zig+21-6
......@@ -11,8 +11,6 @@ const ErrorMsg = Module.ErrorMsg;
1111const Target = std.Target;
1212const Allocator = mem.Allocator;
1313
14const Backend = @import("backend.zig");
15
1614pub const Result = union(enum) {
1715 /// The `code` parameter passed to `generateSymbol` has the value appended.
1816 appended: void,
......@@ -194,14 +192,28 @@ const Function = struct {
194192 },
195193 else => return self.fail(src, "TODO implement @breakpoint() for {}", .{self.target.cpu.arch}),
196194 }
197 return .unreach;
195 return .none;
198196 }
199197
200198 fn genCall(self: *Function, inst: *ir.Inst.Call) !MCValue {
199 if (inst.args.func.cast(ir.Inst.Constant)) |func_inst| {
200 if (inst.args.args.len != 0) {
201 return self.fail(inst.base.src, "TODO implement call with more than 0 parameters", .{});
202 }
203
204 if (func_inst.val.cast(Value.Payload.Function)) |func_val| {
205 const func = func_val.func;
206 return self.fail(inst.base.src, "TODO implement calling function", .{});
207 } else {
208 return self.fail(inst.base.src, "TODO implement calling weird function values", .{});
209 }
210 } else {
211 return self.fail(inst.base.src, "TODO implement calling runtime known function pointer", .{});
212 }
213
201214 switch (self.target.cpu.arch) {
202215 else => return self.fail(inst.base.src, "TODO implement call for {}", .{self.target.cpu.arch}),
203216 }
204 return .unreach;
205217 }
206218
207219 fn genRet(self: *Function, inst: *ir.Inst.Ret) !MCValue {
......@@ -589,10 +601,13 @@ const Function = struct {
589601 }
590602};
591603
604const x86_64 = @import("codegen/x86_64.zig");
605const x86 = @import("codegen/x86.zig");
606
592607fn Reg(comptime arch: Target.Cpu.Arch) type {
593608 return switch (arch) {
594 .i386 => Backend.x86.Register,
595 .x86_64 => Backend.x86_64.Register,
609 .i386 => x86.Register,
610 .x86_64 => x86_64.Register,
596611 else => @compileError("TODO add more register enums"),
597612 };
598613}
src-self-hosted/codegen/x86.zig created+30
......@@ -0,0 +1,30 @@
1// zig fmt: off
2pub const Register = enum(u8) {
3 // 0 through 7, 32-bit registers. id is int value
4 eax, ecx, edx, ebx, esp, ebp, esi, edi,
5
6 // 8-15, 16-bit registers. id is int value - 8.
7 ax, cx, dx, bx, sp, bp, si, di,
8
9 // 16-23, 8-bit registers. id is int value - 16.
10 al, bl, cl, dl, ah, ch, dh, bh,
11
12 /// Returns the bit-width of the register.
13 pub fn size(self: @This()) u7 {
14 return switch (@enumToInt(self)) {
15 0...7 => 32,
16 8...15 => 16,
17 16...23 => 8,
18 else => unreachable,
19 };
20 }
21
22 /// Returns the register's id. This is used in practically every opcode the
23 /// x86 has. It is embedded in some instructions, such as the `B8 +rd` move
24 /// instruction, and is used in the R/M byte.
25 pub fn id(self: @This()) u3 {
26 return @truncate(u3, @enumToInt(self));
27 }
28};
29
30// zig fmt: on
src-self-hosted/codegen/x86_64.zig created+53
......@@ -0,0 +1,53 @@
1// zig fmt: off
2pub const Register = enum(u8) {
3 // 0 through 15, 64-bit registers. 8-15 are extended.
4 // id is just the int value.
5 rax, rcx, rdx, rbx, rsp, rbp, rsi, rdi,
6 r8, r9, r10, r11, r12, r13, r14, r15,
7
8 // 16 through 31, 32-bit registers. 24-31 are extended.
9 // id is int value - 16.
10 eax, ecx, edx, ebx, esp, ebp, esi, edi,
11 r8d, r9d, r10d, r11d, r12d, r13d, r14d, r15d,
12
13 // 32-47, 16-bit registers. 40-47 are extended.
14 // id is int value - 32.
15 ax, cx, dx, bx, sp, bp, si, di,
16 r8w, r9w, r10w, r11w, r12w, r13w, r14w, r15w,
17
18 // 48-63, 8-bit registers. 56-63 are extended.
19 // id is int value - 48.
20 al, bl, cl, dl, ah, ch, dh, bh,
21 r8b, r9b, r10b, r11b, r12b, r13b, r14b, r15b,
22
23 /// Returns the bit-width of the register.
24 pub fn size(self: @This()) u7 {
25 return switch (@enumToInt(self)) {
26 0...15 => 64,
27 16...31 => 32,
28 32...47 => 16,
29 48...64 => 8,
30 else => unreachable,
31 };
32 }
33
34 /// Returns whether the register is *extended*. Extended registers are the
35 /// new registers added with amd64, r8 through r15. This also includes any
36 /// other variant of access to those registers, such as r8b, r15d, and so
37 /// on. This is needed because access to these registers requires special
38 /// handling via the REX prefix, via the B or R bits, depending on context.
39 pub fn isExtended(self: @This()) bool {
40 return @enumToInt(self) & 0x08 != 0;
41 }
42
43 /// This returns the 4-bit register ID, which is used in practically every
44 /// opcode. Note that bit 3 (the highest bit) is *never* used directly in
45 /// an instruction (@see isExtended), and requires special handling. The
46 /// lower three bits are often embedded directly in instructions (such as
47 /// the B8 variant of moves), or used in R/M bytes.
48 pub fn id(self: @This()) u4 {
49 return @truncate(u4, @enumToInt(self));
50 }
51};
52
53// zig fmt: on