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| author | Björn Gustavsson <[email protected]> | 2016-04-14 10:04:49 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2016-04-14 10:30:02 +0200 |
| commit | 19f231024d5fc4e0e7084b6b38ca404f3368844a (patch) | |
| tree | 91b0775e9704bb843964431e27749f57de41f028 /erts | |
| parent | 21041ee50217d90dc21dd484b9dd26c469e8cf87 (diff) | |
| download | otp-19f231024d5fc4e0e7084b6b38ca404f3368844a.tar.gz otp-19f231024d5fc4e0e7084b6b38ca404f3368844a.tar.bz2 otp-19f231024d5fc4e0e7084b6b38ca404f3368844a.zip | |
Eliminate misleading #ifdef ARCH_64 in beam_opcodes.h
There is a '#ifdef ARCH_64' beam_opcodes.h, which might make you
think that files generated by beam_makeops will work for both
32-bit and 64-bit architectures. They will not. beam_makeops will
generate different code depending on its -wordsize option.
Diffstat (limited to 'erts')
| -rwxr-xr-x | erts/emulator/utils/beam_makeops | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops index 2e7073a8f0..31cd072d5a 100755 --- a/erts/emulator/utils/beam_makeops +++ b/erts/emulator/utils/beam_makeops @@ -624,19 +624,25 @@ sub emulator_output { print "#define NUM_SPECIFIC_OPS ", scalar(@op_to_name), "\n"; print "#define SCRATCH_X_REG 1023\n"; print "\n"; - print "#ifdef ARCH_64\n"; - print "# define BEAM_WIDE_MASK 0xFFFFUL\n"; - print "# define BEAM_LOOSE_MASK 0xFFFFUL\n"; - print "# define BEAM_TIGHT_MASK 0xFFFFUL\n"; - print "# define BEAM_WIDE_SHIFT 32\n"; - print "# define BEAM_LOOSE_SHIFT 16\n"; - print "# define BEAM_TIGHT_SHIFT 16\n"; - print "#else\n"; - print "# define BEAM_LOOSE_MASK 0xFFF\n"; - print "# define BEAM_TIGHT_MASK 0xFFC\n"; - print "# define BEAM_LOOSE_SHIFT 16\n"; - print "# define BEAM_TIGHT_SHIFT 10\n"; - print "#endif\n"; + if ($wordsize == 32) { + print "#if defined(ARCH_64)\n"; + print qq[ #error "32-bit architecture assumed, but ARCH_64 is defined"\n]; + print "#endif\n"; + print "#define BEAM_LOOSE_MASK 0xFFF\n"; + print "#define BEAM_TIGHT_MASK 0xFFC\n"; + print "#define BEAM_LOOSE_SHIFT 16\n"; + print "#define BEAM_TIGHT_SHIFT 10\n"; + } elsif ($wordsize == 64) { + print "#if !defined(ARCH_64)\n"; + print qq[ #error "64-bit architecture assumed, but ARCH_64 not defined"\n]; + print "#endif\n"; + print "#define BEAM_WIDE_MASK 0xFFFFUL\n"; + print "#define BEAM_LOOSE_MASK 0xFFFFUL\n"; + print "#define BEAM_TIGHT_MASK 0xFFFFUL\n"; + print "#define BEAM_WIDE_SHIFT 32\n"; + print "#define BEAM_LOOSE_SHIFT 16\n"; + print "#define BEAM_TIGHT_SHIFT 16\n"; + } print "\n"; # |