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author | William R. Otte <wotte@dre.vanderbilt.edu> | 2006-07-24 15:50:30 +0000 |
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committer | William R. Otte <wotte@dre.vanderbilt.edu> | 2006-07-24 15:50:30 +0000 |
commit | c44379cc7d9c7aa113989237ab0f56db12aa5219 (patch) | |
tree | 66a84b20d47f2269d8bdc6e0323f338763424d3a /ACE/ace/Atomic_Op_Sparc.c | |
parent | 3aff90f4a822fcf5d902bbfbcc9fa931d6191a8c (diff) | |
download | ATCD-c44379cc7d9c7aa113989237ab0f56db12aa5219.tar.gz |
Repo restructuring
Diffstat (limited to 'ACE/ace/Atomic_Op_Sparc.c')
-rw-r--r-- | ACE/ace/Atomic_Op_Sparc.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/ACE/ace/Atomic_Op_Sparc.c b/ACE/ace/Atomic_Op_Sparc.c new file mode 100644 index 00000000000..f301de5b85f --- /dev/null +++ b/ACE/ace/Atomic_Op_Sparc.c @@ -0,0 +1,113 @@ +/* $Id$ + * + * This is a C file for a reason. The Sun C++ compiler does not accept + * inline assembler. + * + * Portions of this code are based on atomic operations found in the + * linux kernel source code. + */ + +#if defined (ACE_INCLUDE_ATOMIC_OP_SPARC) + +# if defined (__sparcv9) + +unsigned long +ace_atomic_add_long (volatile unsigned long *dest, long rhs) +{ + __asm ("restore\n" + "ldx [%o0], %o2\n" + ".again_add:\n" + "add %o2, %o1, %o3\n" + "casx [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %xcc, .again_add\n" + "mov %o3, %o2\n" + "retl\n" + "add %o2, %o1, %o0\n"); +} + +unsigned long +ace_atomic_swap_long (volatile unsigned long *dest, unsigned long rhs) +{ + __asm ("restore\n" + "ldx [%o0], %o2\n" + ".again_swap:\n" + "mov %o1, %o3\n" + "casx [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %xcc, .again_swap\n" + "mov %o3, %o2\n" + "retl\n" + "mov %o3, %o0\n"); +} + +unsigned long +ace_atomic_swap_add_long (volatile unsigned long *dest, long rhs) +{ + __asm ("restore\n" + "ldx [%o0], %o2\n" + ".again_swap_add:\n" + "mov %o2, %o4\n" + "add %o2, %o1, %o3\n" + "casx [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %xcc, .again_swap_add\n" + "mov %o3, %o2\n" + "retl\n" + "mov %o4, %o0\n"); +} + +#else + +unsigned long +ace_atomic_add_long (volatile unsigned long *dest, long rhs) +{ + __asm ("restore\n" + "ld [%o0], %o2\n" + ".again_add:\n" + "add %o2, %o1, %o3\n" + "cas [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %icc, .again_add\n" + "mov %o3, %o2\n" + "retl\n" + "add %o2, %o1, %o0\n"); +} + +unsigned long +ace_atomic_swap_long (volatile unsigned long *dest, unsigned long rhs) +{ + __asm ("restore\n" + "ld [%o0], %o2\n" + ".again_swap:\n" + "mov %o1, %o3\n" + "cas [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %icc, .again_swap\n" + "mov %o3, %o2\n" + "retl\n" + "mov %o3, %o0\n"); +} + +unsigned long +ace_atomic_swap_add_long (volatile unsigned long *dest, long rhs) +{ + __asm ("restore\n" + "ld [%o0], %o2\n" + ".again_swap_add:\n" + "mov %o2, %o4\n" + "add %o2, %o1, %o3\n" + "cas [%o0], %o2, %o3\n" + "cmp %o2, %o3\n" + "bne,pn %icc, .again_swap_add\n" + "mov %o3, %o2\n" + "retl\n" + "mov %o4, %o0\n"); +} + +# endif /* __sparcv9 */ + +#elif !defined (__GNUC__) +/* Make compilers stop complaining about an empty translation unit */ +static int shut_up_compiler = 0; +#endif /* ACE_INCLUDE_ATOMIC_OP_SPARC */ |