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bsd-user: align use of mmap_lock to that of linux-user 

The introduction of stricter mmap_lock checking in translate-all broke
the BSD user build. The working mmap_lock functions were hidden behind
CONFIG_USE_NPTL which is never defined. This patch brings them inline
with linux-user.

Despite the disapearence of the comment "We aren't threadsafe to start
with..." this doesn't make bsd-user so. It will still need the rest of
the fixes that have been done in linux-user ported over.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alex Bennée 2017-03-20 14:36:47 +00:00
parent 02bed6bd5f
commit 95992b674c
2 changed files with 1 additions and 14 deletions
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13
bsd-user/mmap.c
View File

@ -24,8 +24,7 @@
//#define DEBUG_MMAP
#if defined(CONFIG_USE_NPTL)
pthread_mutex_t mmap_mutex;
static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER;
static int __thread mmap_lock_count;
void mmap_lock(void)
@ -62,16 +61,6 @@ void mmap_fork_end(int child)
else
pthread_mutex_unlock(&mmap_mutex);
}
#else
/* We aren't threadsafe to start with, so no need to worry about locking. */
void mmap_lock(void)
{
}
void mmap_unlock(void)
{
}
#endif
/* NOTE: all the constants are the HOST ones, but addresses are target. */
int target_mprotect(abi_ulong start, abi_ulong len, int prot)

2
bsd-user/qemu.h
View File

@ -209,10 +209,8 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
abi_ulong new_addr);
int target_msync(abi_ulong start, abi_ulong len, int flags);
extern unsigned long last_brk;
#if defined(CONFIG_USE_NPTL)
void mmap_fork_start(void);
void mmap_fork_end(int child);
#endif
/* main.c */
extern unsigned long x86_stack_size;