scripts/cocci-macro-file.h

   1 /* Macro file for Coccinelle
   2  *
   3  * Copyright (C) 2015 Red Hat, Inc.
   4  *
   5  * Authors:
   6  *  Paolo Bonzini <pbonzini@redhat.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or, at your
   9  * option, any later version.  See the COPYING file in the top-level directory.
  10  */
  11
  12 /* Coccinelle only does limited parsing of headers, and chokes on some idioms
  13  * defined in compiler.h and queue.h.  Macros that Coccinelle must know about
  14  * in order to parse .c files must be in a separate macro file---which is
  15  * exactly what you're staring at now.
  16  *
  17  * To use this file, add the "--macro-file scripts/cocci-macro-file.h" to the
  18  * Coccinelle command line.
  19  */
  20
  21 /* From qemu/compiler.h */
  22 #define QEMU_GNUC_PREREQ(maj, min) 1
  23 #define QEMU_NORETURN __attribute__ ((__noreturn__))
  24 #define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
  25 #define QEMU_SENTINEL __attribute__((sentinel))
  26 #define QEMU_ARTIFICIAL __attribute__((always_inline, artificial))
  27 #define QEMU_PACKED __attribute__((gcc_struct, packed))
  28
  29 #define cat(x,y) x ## y
  30 #define cat2(x,y) cat(x,y)
  31 #define QEMU_BUILD_BUG_ON(x) \
  32     typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused));
  33
  34 #define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
  35
  36 #define xglue(x, y) x ## y
  37 #define glue(x, y) xglue(x, y)
  38 #define stringify(s)    tostring(s)
  39 #define tostring(s)     #s
  40
  41 #define typeof_field(type, field) typeof(((type *)0)->field)
  42 #define type_check(t1,t2) ((t1*)0 - (t2*)0)
  43
  44 /* From qemu/queue.h */
  45
  46 #define QLIST_HEAD(name, type)                                          \
  47 struct name {                                                           \
  48         struct type *lh_first;  /* first element */                     \
  49 }
  50
  51 #define QLIST_HEAD_INITIALIZER(head)                                    \
  52         { NULL }
  53
  54 #define QLIST_ENTRY(type)                                               \
  55 struct {                                                                \
  56         struct type *le_next;   /* next element */                      \
  57         struct type **le_prev;  /* address of previous next element */  \
  58 }
  59
  60 /*
  61  * Singly-linked List definitions.
  62  */
  63 #define QSLIST_HEAD(name, type)                                          \
  64 struct name {                                                           \
  65         struct type *slh_first; /* first element */                     \
  66 }
  67
  68 #define QSLIST_HEAD_INITIALIZER(head)                                    \
  69         { NULL }
  70
  71 #define QSLIST_ENTRY(type)                                               \
  72 struct {                                                                \
  73         struct type *sle_next;  /* next element */                      \
  74 }
  75
  76 /*
  77  * Simple queue definitions.
  78  */
  79 #define QSIMPLEQ_HEAD(name, type)                                       \
  80 struct name {                                                           \
  81     struct type *sqh_first;    /* first element */                      \
  82     struct type **sqh_last;    /* addr of last next element */          \
  83 }
  84
  85 #define QSIMPLEQ_HEAD_INITIALIZER(head)                                 \
  86     { NULL, &(head).sqh_first }
  87
  88 #define QSIMPLEQ_ENTRY(type)                                            \
  89 struct {                                                                \
  90     struct type *sqe_next;    /* next element */                        \
  91 }
  92
  93 /*
  94  * Tail queue definitions.
  95  */
  96 #define Q_TAILQ_HEAD(name, type, qual)                                  \
  97 struct name {                                                           \
  98         qual type *tqh_first;           /* first element */             \
  99         qual type *qual *tqh_last;      /* addr of last next element */ \
 100 }
 101 #define QTAILQ_HEAD(name, type)                                         \
 102 struct name {                                                           \
 103         type *tqh_first;      /* first element */                       \
 104         type **tqh_last;      /* addr of last next element */           \
 105 }
 106
 107 #define QTAILQ_HEAD_INITIALIZER(head)                                   \
 108         { NULL, &(head).tqh_first }
 109
 110 #define Q_TAILQ_ENTRY(type, qual)                                       \
 111 struct {                                                                \
 112         qual type *tqe_next;            /* next element */              \
 113         qual type *qual *tqe_prev;      /* address of previous next element */\
 114 }
 115 #define QTAILQ_ENTRY(type)                                              \
 116 struct {                                                                \
 117         type *tqe_next;       /* next element */                        \
 118         type **tqe_prev;      /* address of previous next element */    \
 119 }