diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2017-11-20 17:57:46 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2017-11-20 17:57:46 -0500 |
| commit | 1ecf7eeb8719e2fab008c37c17590cf3840cfc5b (patch) | |
| tree | 9294ff0233ef6c88d9d7f48afc85106de76e6b12 /src | |
| parent | c4adfc21cbae47f71624a87008073503308c2393 (diff) | |
Add support for Motorola 88K to s_lock.h.
Apparently there are still people out there who care about this old
architecture. They probably care about dusty versions of Postgres
too, so back-patch to all supported branches.
David Carlier (from a patch being carried by OpenBSD packagers)
Discussion: https://postgr.es/m/CA+XhMqzwFSGVU7MEnfhCecc8YdP98tigXzzpd0AAdwaGwaVXEA@mail.gmail.com
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/storage/s_lock.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h index bbf505e246f..d0d162e654e 100644 --- a/src/include/storage/s_lock.h +++ b/src/include/storage/s_lock.h @@ -543,6 +543,30 @@ tas(volatile slock_t *lock) #endif /* (__mc68000__ || __m68k__) && __linux__ */ +/* Motorola 88k */ +#if defined(__m88k__) +#define HAS_TEST_AND_SET + +typedef unsigned int slock_t; + +#define TAS(lock) tas(lock) + +static __inline__ int +tas(volatile slock_t *lock) +{ + register slock_t _res = 1; + + __asm__ __volatile__( + " xmem %0, %2, %%r0 \n" +: "+r"(_res), "+m"(*lock) +: "r"(lock) +: "memory"); + return (int) _res; +} + +#endif /* __m88k__ */ + + /* * VAXen -- even multiprocessor ones * (thanks to Tom Ivar Helbekkmo) |