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Viewing changes to src/atomic_ops/sysdeps/gcc/sparc.h

  • Committer: Bazaar Package Importer
  • Author(s): Ian Wienand
  • Date: 2006-10-16 09:45:29 UTC
  • mfrom: (2.1.4 dapper)
  • Revision ID: james.westby@ubuntu.com-20061016094529-r3bevpq5w6g3rv20
Tags: 1.1-4
http://bugs.debian.org/322027
http://bugs.debian.org/338469
* Closes: #322027, #338469 -- add 04_m68k.patch for M68K support, from
  Roman Zippel <zippel@linux-m68k.org>.  Add note in README.Debian about
  port.
* Change mainatiner address to my @debian.org

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src/atomic_ops/sysdeps/gcc/sparc.h
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/* Non-ancient SPARCs provide compare-and-swap (casa).  */
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/* We should make that available.                       */
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#include "../atomic_load_store.h"
 
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#include "../all_atomic_load_store.h"
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/* Real SPARC code uses TSO:                            */
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#include "../ordered_except_wr.h"
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/* Test_and_set location is just a byte.                */
 
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#include "../test_and_set_t_is_char.h"
 
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AO_INLINE AO_TS_VAL_t
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AO_test_and_set_full(volatile AO_TS_t *addr) {
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  int oldval;
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#define AO_HAVE_test_and_set_full
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/* FIXME: This needs to be extended for SPARC v8 and v9.        */
 
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/* SPARC V8 also has swap.  V9 has CAS.                         */
 
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/* There are barriers like membar #LoadStore.                   */
 
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/* CASA (32-bit) and CASXA(64-bit) instructions were            */
 
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/* added in V9.                                                 */