src/rt/arch/x86_64/regs.h

   1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #define RUSTRT_RBX   0
  12 #define RUSTRT_RSP   1
  13 #define RUSTRT_RBP   2
  14 // RCX on Windows, RDI elsewhere
  15 #define RUSTRT_ARG0  3
  16 #define RUSTRT_R12   4
  17 #define RUSTRT_R13   5
  18 #define RUSTRT_R14   6
  19 #define RUSTRT_R15   7
  20 #define RUSTRT_IP    8
  21 // Not used, just padding
  22 #define RUSTRT_XXX   9
  23 #define RUSTRT_XMM0 10
  24 #define RUSTRT_XMM1 12
  25 #define RUSTRT_XMM2 14
  26 #define RUSTRT_XMM3 16
  27 #define RUSTRT_XMM4 18
  28 #define RUSTRT_XMM5 20
  29 #define RUSTRT_MAX  22
  30
  31 // ARG0 is the register in which the first argument goes.
  32 // Naturally this depends on your operating system.
  33 #if defined(__MINGW32__) || defined(_WINDOWS)
  34 #   define RUSTRT_ARG0_S %rcx
  35 #   define RUSTRT_ARG1_S %rdx
  36 #   define RUSTRT_ARG2_S %r8
  37 #   define RUSTRT_ARG3_S %r9
  38 #else
  39 #   define RUSTRT_ARG0_S %rdi
  40 #   define RUSTRT_ARG1_S %rsi
  41 #   define RUSTRT_ARG2_S %rdx
  42 #   define RUSTRT_ARG3_S %rcx
  43 #   define RUSTRT_ARG4_S %r8
  44 #   define RUSTRT_ARG5_S %r9
  45 #endif
  46
  47