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| author | Helge Deller <deller@gmx.de> | 2022-05-28 12:52:10 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2022-06-24 10:00:01 +0200 |
| commit | 9a7f682c26acae5bc8bfd1f7c774070da54f1625 (patch) | |
| tree | 8f1c0ebc183867c574a74b07be9b9d60329d151d /linux-user/syscall.c | |
| parent | 892a4f6a750abceeda4c1ee8324f58f82fd6bd89 (diff) | |
| download | qemu-9a7f682c26acae5bc8bfd1f7c774070da54f1625.zip qemu-9a7f682c26acae5bc8bfd1f7c774070da54f1625.tar.gz qemu-9a7f682c26acae5bc8bfd1f7c774070da54f1625.tar.bz2 | |
linux-user: Adjust child_tidptr on set_tid_address() syscall
Keep track of the new child tidptr given by a set_tid_address() syscall.
Do not call the host set_tid_address() syscall because we are emulating
the behaviour of writing to child_tidptr in the exit() path.
Signed-off-by: Helge Deller<deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <YpH+2sw1PCRqx/te@p100>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 8f68f25..669add7 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -320,9 +320,6 @@ _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) #ifdef __NR_exit_group _syscall1(int,exit_group,int,error_code) #endif -#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) -_syscall1(int,set_tid_address,int *,tidptr) -#endif #if defined(__NR_futex) _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, const struct timespec *,timeout,int *,uaddr2,int,val3) @@ -12196,9 +12193,14 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, } #endif -#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) +#if defined(TARGET_NR_set_tid_address) case TARGET_NR_set_tid_address: - return get_errno(set_tid_address((int *)g2h(cpu, arg1))); + { + TaskState *ts = cpu->opaque; + ts->child_tidptr = arg1; + /* do not call host set_tid_address() syscall, instead return tid() */ + return get_errno(sys_gettid()); + } #endif case TARGET_NR_tkill: |