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Put back Darwin zone memalign

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I had another look at the XNU source and this does seem to exist.
The manpage says that it is the zone version of posix_memalign,
though that's probably more because Darwin has no memalign.
This commit is contained in:
Paul Floyd 2023-02-28 19:56:52 +01:00
parent e862c6f3d2
commit 19dc72931b
1 changed files with 32 additions and 0 deletions
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32
coregrind/m_replacemalloc/vg_replace_malloc.c
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@ -1506,6 +1506,34 @@ extern int *___errno (void) __attribute__((weak));
*
*/
#define ZONEMEMALIGN(soname, fnname) \
\
void* VG_REPLACE_FUNCTION_EZU(10100,soname,fnname) \
( void *zone, SizeT alignment, SizeT n ); \
void* VG_REPLACE_FUNCTION_EZU(10100,soname,fnname) \
( void *zone, SizeT alignment, SizeT n ) \
{ \
void* v; \
\
DO_INIT; \
TRIGGER_MEMCHECK_ERROR_IF_UNDEFINED((UWord) zone); \
TRIGGER_MEMCHECK_ERROR_IF_UNDEFINED(n); \
MALLOC_TRACE("zone_memalign(%p, al %llu, size %llu)", \
zone, (ULong)alignment, (ULong)n ); \
\
/* Round up to minimum alignment if necessary. */ \
if (alignment < VG_MIN_MALLOC_SZB) \
alignment = VG_MIN_MALLOC_SZB; \
\
/* Round up to nearest power-of-two if necessary (like glibc). */ \
while (0 != (alignment & (alignment - 1))) alignment++; \
\
v = (void*)VALGRIND_NON_SIMD_CALL2( info.tl_memalign, alignment, n ); \
MALLOC_TRACE(" = %p\n", v ); \
if (!v) SET_ERRNO_ENOMEM; \
return v; \
}
#if defined(VGO_linux)
#if !defined(MUSL_LIBC)
#define MEMALIGN(soname, fnname) \
@ -1647,6 +1675,10 @@ extern int *___errno (void) __attribute__((weak));
MEMALIGN(VG_Z_LIBC_SONAME, memalign);
MEMALIGN(SO_SYN_MALLOC, memalign);
#elif defined(VGO_darwin)
ZONEMEMALIGN(VG_Z_LIBC_SONAME, malloc_zone_memalign);
ZONEMEMALIGN(SO_SYN_MALLOC, malloc_zone_memalign);
#elif defined(VGO_solaris)
MEMALIGN(VG_Z_LIBC_SONAME, memalign);
MEMALIGN(VG_Z_LIBUMEM_SO_1, memalign);