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fix gettid() clash with new glibc

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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.0-pull-request' into staging

fix gettid() clash with new glibc

# gpg: Signature made Mon 08 Apr 2019 20:36:06 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-4.0-pull-request:
  linux-user: rename gettid() to sys_gettid() to avoid clash with glibc
  linux-user: assume __NR_gettid always exists

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-04-09 10:02:30 +01:00
commit 248987f92c
1 changed files with 6 additions and 13 deletions
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19
linux-user/syscall.c
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@ -249,15 +249,8 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
#define TARGET_NR__llseek TARGET_NR_llseek
#endif
#ifdef __NR_gettid
_syscall0(int, gettid)
#else
/* This is a replacement for the host gettid() and must return a host
errno. */
static int gettid(void) {
return -ENOSYS;
}
#endif
#define __NR_sys_gettid __NR_gettid
_syscall0(int, sys_gettid)
/* For the 64-bit guest on 32-bit host case we must emulate
* getdents using getdents64, because otherwise the host
@ -5442,7 +5435,7 @@ static void *clone_func(void *arg)
cpu = ENV_GET_CPU(env);
thread_cpu = cpu;
ts = (TaskState *)cpu->opaque;
info->tid = gettid();
info->tid = sys_gettid();
task_settid(ts);
if (info->child_tidptr)
put_user_u32(info->tid, info->child_tidptr);
@ -5587,9 +5580,9 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
mapping. We can't repeat the spinlock hack used above because
the child process gets its own copy of the lock. */
if (flags & CLONE_CHILD_SETTID)
put_user_u32(gettid(), child_tidptr);
put_user_u32(sys_gettid(), child_tidptr);
if (flags & CLONE_PARENT_SETTID)
put_user_u32(gettid(), parent_tidptr);
put_user_u32(sys_gettid(), parent_tidptr);
ts = (TaskState *)cpu->opaque;
if (flags & CLONE_SETTLS)
cpu_set_tls (env, newtls);
@ -10629,7 +10622,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
return TARGET_PAGE_SIZE;
#endif
case TARGET_NR_gettid:
return get_errno(gettid());
return get_errno(sys_gettid());
#ifdef TARGET_NR_readahead
case TARGET_NR_readahead:
#if TARGET_ABI_BITS == 32