lunaix-os/arch/LConfig

   1 from . import x86
   2
   3 @"Platform"
   4 def architecture_support():
   5     """
   6         Config ISA related features
   7     """
   8
   9     @flag
  10     def arch_x86_32() -> bool:
  11         when(arch is "i386")
  12
  13     @flag
  14     def arch_x86_64() -> bool:
  15         when(arch is "x86_64")
  16
  17     @flag
  18     def arch_x86() -> bool:
  19         when(arch is "i386")
  20         when(arch is "x86_64")
  21
  22     @"Architecture"
  23     def arch() -> "i386" | "x86_64":
  24         """
  25             Config ISA support
  26         """
  27
  28         match env("ARCH"):
  29             case "i386":
  30                 return "i386"
  31             case "aarch64":
  32                 return "aarch64"
  33             case "rv64":
  34                 return "rv64"
  35             case "x86_64":
  36                 return "x86_64"
  37
  38         print("unknown ARCH:", env("ARCH"), "default to x86_64")
  39         return "x86_64"
  40
  41     @"Base operand size"
  42     @readonly
  43     def arch_bits() -> 32 | 64:
  44         """
  45             Defines the base size of a general register of the
  46             current selected ISA.
  47
  48             This the 'bits' part when we are talking about a CPU
  49         """
  50
  51         match arch.val:
  52             case "i386":
  53                 return 32
  54             case "aarch64":
  55                 return 64
  56             case "rv64":
  57                 return 64
  58             case "x86_64":
  59                 return 64
  60             case _:
  61                 return 32
  62