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117785483a
This actually leads to better code. Copies of the halt loop inlined in various places will instead be single instructions 'bl halt'. It's also important for the translation validation to avoid having pointless loops everywhere, especially inside the bodies of other loops.
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* Copyright 2014, General Dynamics C4 Systems
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*
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* This software may be distributed and modified according to the terms of
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* the GNU General Public License version 2. Note that NO WARRANTY is provided.
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* See "LICENSE_GPLv2.txt" for details.
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*
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* @TAG(GD_GPL)
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*/
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#ifndef __UTIL_H
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#define __UTIL_H
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#define BIT(n) (1ul << (n))
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#define MASK(n) (BIT(n)-1ul)
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#define IS_ALIGNED(n, b) (!((n) & MASK(b)))
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#define ROUND_DOWN(n, b) (((n) >> (b)) << (b))
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#define ROUND_UP(n, b) (((((n) - 1ul) >> (b)) + 1ul) << (b))
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#ifndef __ASSEMBLER__
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#define NULL ((void *)0)
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#define PACKED __attribute__((packed))
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#define NORETURN __attribute__((__noreturn__))
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#define CONST __attribute__((__const__))
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#define PURE __attribute__((__pure__))
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#define ALIGN(n) __attribute__((__aligned__(n)))
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#define FASTCALL __attribute__((fastcall))
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#ifdef __clang__
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#define VISIBLE /* nothing */
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#else
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#define VISIBLE __attribute__((externally_visible))
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#endif
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#define NO_INLINE __attribute__((noinline))
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#define FORCE_INLINE __attribute__((always_inline))
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#define SECTION(sec) __attribute__((__section__(sec)))
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#define UNUSED __attribute__((unused))
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#define USED __attribute__((used))
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#define FASTCALL __attribute__((fastcall))
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/** MODIFIES: */
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void __builtin_unreachable(void);
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#define UNREACHABLE() __builtin_unreachable()
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#define MAY_ALIAS __attribute__((may_alias))
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#define OFFSETOF(type, member) \
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__builtin_offsetof(type, member)
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#ifdef __GNUC__
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/* Borrowed from linux/include/linux/compiler.h */
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define likely(x) (!!(x))
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#define unlikely(x) (!!(x))
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#endif
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/* need that for compiling with c99 instead of gnu99 */
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#define asm __asm__
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/* Evaluate a Kconfig-provided configuration setting at compile-time. */
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#define config_set(macro) _is_set_(macro)
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#define _macrotest_1 ,
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#define _is_set_(value) _is_set__(_macrotest_##value)
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#define _is_set__(comma) _is_set___(comma 1, 0)
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#define _is_set___(_, v, ...) v
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/* Check the existance of a configuration setting, returning one value if it
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* exists and a different one if it does not */
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#define config_ternary(macro, true, false) _config_ternary(macro, true, false)
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#define _config_ternary(value, true, false) _config_ternary_(_macrotest_##value, true, false)
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#define _config_ternary_(comma, true, false) _config_ternary__(comma true, false)
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#define _config_ternary__(_, v, ...) v
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/** MODIFIES:
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FNSPEC
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halt_spec: "\<Gamma> \<turnstile> {} Call halt_'proc {}"
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*/
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void halt(void) NORETURN;
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void memzero(void *s, unsigned long n);
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void *memset(void *s, unsigned long c, unsigned long n);
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void *memcpy(void* ptr_dst, const void* ptr_src, unsigned long n);
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int PURE strncmp(const char *s1, const char *s2, int n);
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long CONST char_to_long(char c);
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long PURE str_to_long(const char* str);
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#endif /* !__ASSEMBLER__ */
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int __builtin_clzl (unsigned long x);
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/** MODIFIES: */
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/** DONT_TRANSLATE */
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/** FNSPEC clzl_spec:
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"\<forall>s. \<Gamma> \<turnstile>
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{\<sigma>. s = \<sigma> \<and> x_' s \<noteq> 0 }
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\<acute>ret__long :== PROC clzl(\<acute>x)
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\<lbrace> \<acute>ret__long = of_nat (word_clz (x_' s)) \<rbrace>"
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*/
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static inline long
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CONST clzl(unsigned long x)
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{
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return __builtin_clzl(x);
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}
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int __builtin_ctzl (unsigned long x);
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#define CTZL(x) __builtin_ctzl(x)
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int __builtin_popcountl (unsigned long x);
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/** DONT_TRANSLATE */
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static inline long
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CONST popcountl(unsigned long x)
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{
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return __builtin_popcountl(x);
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}
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#define POPCOUNTL(x) __builtin_popcountl(x)
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#endif /* __UTIL_H */
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