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add m68k port

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three ABIs are supported: the default with 68881 80-bit fpu format and
results returned in floating point registers, softfloat-only with the
same format, and coldfire fpu with IEEE single/double only. only the
first is tested at all, and only under qemu which has fpu emulation
bugs.

basic functionality smoke tests have been performed for the most
common arch-specific breakage via libc-test and qemu user-level
emulation. some sysvipc failures remain, but are shared with other big
endian archs and will be fixed separately.
This commit is contained in:
Rich Felker
2018-06-14 14:26:30 -04:00
parent 18f02c42a2
commit f81e44a0d9
27 changed files with 1079 additions and 0 deletions
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arch/m68k/bits/limits.h Normal file
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define LONG_BIT 32
#endif
#define LONG_MAX 0x7fffffffL
#define LLONG_MAX 0x7fffffffffffffffLL