| ... | ... | @@ -3330,10 +3330,44 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type { |
| 3330 | 3330 | try self.genSetReg(inst.base.src, arg.ty, reg, arg_mcv); |
| 3331 | 3331 | } |
| 3332 | 3332 | |
| 3333 | | if (mem.eql(u8, inst.asm_source, "syscall")) { |
| 3334 | | try self.code.appendSlice(&[_]u8{ 0x0f, 0x05 }); |
| 3335 | | } else if (inst.asm_source.len != 0) { |
| 3336 | | return self.fail(inst.base.src, "TODO implement support for more x86 assembly instructions", .{}); |
| 3333 | { |
| 3334 | var iter = std.mem.tokenize(inst.asm_source, "\n\r"); |
| 3335 | while (iter.next()) |ins| { |
| 3336 | if (mem.eql(u8, ins, "syscall")) { |
| 3337 | try self.code.appendSlice(&[_]u8{ 0x0f, 0x05 }); |
| 3338 | } else if (mem.indexOf(u8, ins, "push")) |_| { |
| 3339 | const arg = ins[4..]; |
| 3340 | if (mem.indexOf(u8, arg, "$")) |l| { |
| 3341 | const n = std.fmt.parseInt(u8, ins[4 + l + 1 ..], 10) catch return self.fail(inst.base.src, "TODO implement more inline asm int parsing", .{}); |
| 3342 | try self.code.appendSlice(&.{ 0x6a, n }); |
| 3343 | } else if (mem.indexOf(u8, arg, "%%")) |l| { |
| 3344 | const reg_name = ins[4 + l + 2 ..]; |
| 3345 | const reg = parseRegName(reg_name) orelse |
| 3346 | return self.fail(inst.base.src, "unrecognized register: '{s}'", .{reg_name}); |
| 3347 | const low_id: u8 = reg.low_id(); |
| 3348 | if (reg.isExtended()) { |
| 3349 | try self.code.appendSlice(&.{ 0x41, 0b1010000 | low_id }); |
| 3350 | } else { |
| 3351 | try self.code.append(0b1010000 | low_id); |
| 3352 | } |
| 3353 | } else return self.fail(inst.base.src, "TODO more push operands", .{}); |
| 3354 | } else if (mem.indexOf(u8, ins, "pop")) |_| { |
| 3355 | const arg = ins[3..]; |
| 3356 | if (mem.indexOf(u8, arg, "%%")) |l| { |
| 3357 | const reg_name = ins[3 + l + 2 ..]; |
| 3358 | const reg = parseRegName(reg_name) orelse |
| 3359 | return self.fail(inst.base.src, "unrecognized register: '{s}'", .{reg_name}); |
| 3360 | const low_id: u8 = reg.low_id(); |
| 3361 | if (reg.isExtended()) { |
| 3362 | try self.code.appendSlice(&.{ 0x41, 0b1011000 | low_id }); |
| 3363 | } else { |
| 3364 | try self.code.append(0b1011000 | low_id); |
| 3365 | } |
| 3366 | } else return self.fail(inst.base.src, "TODO more pop operands", .{}); |
| 3367 | } else { |
| 3368 | return self.fail(inst.base.src, "TODO implement support for more x86 assembly instructions", .{}); |
| 3369 | } |
| 3370 | } |
| 3337 | 3371 | } |
| 3338 | 3372 | |
| 3339 | 3373 | if (inst.output_constraint) |output| { |
Jacob G-W <jacoblevgw@gmail.com> 2021-06-21 13:10:31-04:00
Andrew Kelley <andrew@ziglang.org> 2021-07-08 14:12:08-07:00