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linux-user: Enable NPTL for x86-64

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Add x86-64 implementation of cpu_set_tls() (like the kernel, we
just have to call do_arch_prctl() to set FS); this allows us to
enable NPTL.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Peter Maydell 2013-07-16 18:44:59 +01:00 committed by Riku Voipio
parent bc22eb447c
commit 2667e71c3d
3 changed files with 8 additions and 2 deletions
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1
configure vendored
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@ -4193,7 +4193,6 @@ case "$target_name" in
;;
x86_64)
TARGET_BASE_ARCH=i386
target_nptl="no"
;;
alpha)
;;

7
linux-user/i386/target_cpu.h
View File

@ -36,6 +36,13 @@ static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
do_set_thread_area(env, newtls);
cpu_x86_load_seg(env, R_GS, env->segs[R_GS].selector);
}
#else
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
{
do_arch_prctl(env, TARGET_ARCH_SET_FS, newtls);
}
#endif /* defined(TARGET_ABI32) */
#endif /* !defined(TARGET_CPU_H) */

2
linux-user/syscall.c
View File

@ -4189,7 +4189,7 @@ static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
#endif /* TARGET_I386 && TARGET_ABI32 */
#ifndef TARGET_ABI32
static abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
{
abi_long ret = 0;
abi_ulong val;