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Viewing changes to arch/x86/include/asm/rmwcc.h

  • Committer: Package Import Robot
  • Author(s): Ben Hutchings
  • Date: 2014-02-02 16:57:49 UTC
  • mfrom: (1.1.10) (0.1.21 sid)
  • Revision ID: package-import@ubuntu.com-20140202165749-tw94o9t1t0a8txk6
Tags: 3.13-1~exp2
Merge changes from sid up to 3.12.6-3

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arch/x86/include/asm/rmwcc.h
 
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#ifndef _ASM_X86_RMWcc
 
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#define _ASM_X86_RMWcc
 
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#ifdef CC_HAVE_ASM_GOTO
 
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#define __GEN_RMWcc(fullop, var, cc, ...)                               \
 
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do {                                                                    \
 
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        asm_volatile_goto (fullop "; j" cc " %l[cc_label]"              \
 
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                        : : "m" (var), ## __VA_ARGS__                   \
 
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                        : "memory" : cc_label);                         \
 
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        return 0;                                                       \
 
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cc_label:                                                               \
 
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        return 1;                                                       \
 
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} while (0)
 
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#define GEN_UNARY_RMWcc(op, var, arg0, cc)                              \
 
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        __GEN_RMWcc(op " " arg0, var, cc)
 
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#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)                  \
 
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        __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))
 
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#else /* !CC_HAVE_ASM_GOTO */
 
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#define __GEN_RMWcc(fullop, var, cc, ...)                               \
 
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do {                                                                    \
 
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        char c;                                                         \
 
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        asm volatile (fullop "; set" cc " %1"                           \
 
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                        : "+m" (var), "=qm" (c)                         \
 
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                        : __VA_ARGS__ : "memory");                      \
 
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        return c != 0;                                                  \
 
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} while (0)
 
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#define GEN_UNARY_RMWcc(op, var, arg0, cc)                              \
 
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        __GEN_RMWcc(op " " arg0, var, cc)
 
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#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)                  \
 
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        __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))
 
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#endif /* CC_HAVE_ASM_GOTO */
 
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#endif /* _ASM_X86_RMWcc */