summaryrefslogtreecommitdiff
path: root/includes/stg/MachRegsForHost.h
blob: 135c7974bd7dc6f028c87af60a69b8d9215eaa60 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
/* -----------------------------------------------------------------------------
 *
 * (c) The GHC Team, 1998-2011
 *
 * This header includes MachRegs.h "selecting" regs for the current host
 * platform.
 *
 * Don't #include this in the RTS directly, instead include "RTS.h".
 *
 * To understand the structure of the RTS headers, see the wiki:
 *   https://gitlab.haskell.org/ghc/ghc/wikis/commentary/source-tree/includes
 *
 * ---------------------------------------------------------------------------*/

#pragma once

#if defined(UnregisterisedCompiler)
#if !defined(NO_REGS)
#define NO_REGS
#endif
#endif

/*
 * Defining NO_REGS causes no global registers to be used.  NO_REGS is
 * typically defined by GHC, via a command-line option passed to gcc,
 * when the -funregisterised flag is given.
 *
 * NB. When NO_REGS is on, calling & return conventions may be
 * different.  For example, all function arguments will be passed on
 * the stack, and components of an unboxed tuple will be returned on
 * the stack rather than in registers.
 */
#if defined(NO_REGS)

#define MACHREGS_NO_REGS 1

#else

#define MACHREGS_NO_REGS 0

#if defined(i386_HOST_ARCH)
#define MACHREGS_i386     1
#endif

#if defined(x86_64_HOST_ARCH)
#define MACHREGS_x86_64   1
#endif

#if defined(powerpc_HOST_ARCH) || defined(powerpc64_HOST_ARCH) \
        || defined(powerpc64le_HOST_ARCH) || defined(rs6000_HOST_ARCH)
#define MACHREGS_powerpc  1
#endif

#if defined(sparc_HOST_ARCH)
#define MACHREGS_sparc    1
#endif

#if defined(arm_HOST_ARCH)
#define MACHREGS_arm      1
#endif

#if defined(aarch64_HOST_ARCH)
#define MACHREGS_aarch64  1
#endif

#if defined(darwin_HOST_OS)
#define MACHREGS_darwin   1
#endif

#endif

#include "MachRegs.h"