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Unbreak ia64: tls_model("initial-exec") is invalid, because it assumes

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the static TLS model, which is fundamentally different from the dynamic
TLS model. The consequence was data corruption. Limit the attribute to
i386 and amd64.
This commit is contained in:
Marcel Moolenaar 2010-02-16 06:47:00 +00:00
parent e45051c39e
commit 066d438476
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=203950
1 changed files with 9 additions and 11 deletions
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20
lib/libc/stdlib/malloc.c
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@ -215,10 +215,12 @@ __FBSDID("$FreeBSD$");
# define LG_QUANTUM 4
# define LG_SIZEOF_PTR 2
# define CPU_SPINWAIT __asm__ volatile("pause")
# define TLS_MODEL __attribute__((tls_model("initial-exec")))
#endif
#ifdef __ia64__
# define LG_QUANTUM 4
# define LG_SIZEOF_PTR 3
# define TLS_MODEL /* default */
#endif
#ifdef __alpha__
# define LG_QUANTUM 4
@ -234,6 +236,7 @@ __FBSDID("$FreeBSD$");
# define LG_QUANTUM 4
# define LG_SIZEOF_PTR 3
# define CPU_SPINWAIT __asm__ volatile("pause")
# define TLS_MODEL __attribute__((tls_model("initial-exec")))
#endif
#ifdef __arm__
# define LG_QUANTUM 3
@ -1090,14 +1093,12 @@ static pthread_mutex_t arenas_lock; /* Protects arenas initialization. */
* Map of _pthread_self() --> arenas[???], used for selecting an arena to use
* for allocations.
*/
static __thread arena_t *arenas_map
__attribute__((tls_model("initial-exec")));
static __thread arena_t *arenas_map TLS_MODEL;
#endif
#ifdef MALLOC_TCACHE
/* Map of thread-specific caches. */
static __thread tcache_t *tcache_tls
__attribute__((tls_model("initial-exec")));
static __thread tcache_t *tcache_tls TLS_MODEL;
/*
* Number of cache slots for each bin in the thread cache, or 0 if tcache is
@ -1115,15 +1116,12 @@ unsigned tcache_gc_incr;
* since the state of mmap_unaligned only affects performance, rather than
* correct function.
*/
static
#ifndef NO_TLS
__thread
static __thread bool mmap_unaligned TLS_MODEL;
#else
static bool mmap_unaligned;
#endif
bool mmap_unaligned
#ifndef NO_TLS
__attribute__((tls_model("initial-exec")))
#endif
;
#ifdef MALLOC_STATS
static malloc_mutex_t chunks_mtx;
/* Chunk statistics. */