@@ -7958,6 +7958,103 @@ static abi_long impl_##NAME(void *cpu_env, unsigned num, abi_long arg1, \
abi_long arg5, abi_long arg6, abi_long arg7, \
abi_long arg8)
+IMPL(brk)
+{
+ return do_brk(arg1);
+}
+
+IMPL(close)
+{
+ fd_trans_unregister(arg1);
+ return get_errno(close(arg1));
+}
+
+IMPL(exit)
+{
+ CPUState *cpu = ENV_GET_CPU(cpu_env);
+
+ /* In old applications this may be used to implement _exit(2).
+ However in threaded applictions it is used for thread termination,
+ and _exit_group is used for application termination.
+ Do thread termination if we have more then one thread. */
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+
+ cpu_list_lock();
+
+ if (CPU_NEXT(first_cpu)) {
+ /* Remove the CPU from the list. */
+ QTAILQ_REMOVE(&cpus, cpu, node);
+ cpu_list_unlock();
+
+ TaskState *ts = cpu->opaque;
+ if (ts->child_tidptr) {
+ put_user_u32(0, ts->child_tidptr);
+ sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
+ NULL, NULL, 0);
+ }
+ thread_cpu = NULL;
+ object_unref(OBJECT(cpu));
+ g_free(ts);
+ rcu_unregister_thread();
+ pthread_exit(NULL);
+ } else {
+ cpu_list_unlock();
+
+#ifdef TARGET_GPROF
+ _mcleanup();
+#endif
+ gdb_exit(cpu_env, arg1);
+ _exit(arg1);
+ }
+ g_assert_not_reached();
+}
+
+IMPL(read)
+{
+ abi_long ret;
+ char *p;
+
+ if (arg3 == 0) {
+ return 0;
+ }
+ p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_read(arg1, p, arg3));
+ if (ret >= 0 && fd_trans_host_to_target_data(arg1)) {
+ ret = fd_trans_host_to_target_data(arg1)(p, ret);
+ }
+ unlock_user(p, arg2, ret);
+ return ret;
+}
+
+IMPL(write)
+{
+ abi_long ret;
+ char *p;
+
+ p = lock_user(VERIFY_READ, arg2, arg3, 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ if (fd_trans_target_to_host_data(arg1)) {
+ void *copy = g_malloc(arg3);
+ memcpy(copy, p, arg3);
+ ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
+ if (ret >= 0) {
+ ret = get_errno(safe_write(arg1, copy, ret));
+ }
+ g_free(copy);
+ } else {
+ ret = get_errno(safe_write(arg1, p, arg3));
+ }
+ unlock_user(p, arg2, ret);
+ return ret;
+}
+
/* This is an internal helper for do_syscall so that it is easier
* to have a single return point, so that actions, such as logging
* of syscall results, can be performed.
@@ -7975,77 +8072,6 @@ static abi_long do_syscall1(void *cpu_env, unsigned num, abi_long arg1,
void *p;
switch(num) {
- case TARGET_NR_exit:
- /* In old applications this may be used to implement _exit(2).
- However in threaded applictions it is used for thread termination,
- and _exit_group is used for application termination.
- Do thread termination if we have more then one thread. */
-
- if (block_signals()) {
- return -TARGET_ERESTARTSYS;
- }
-
- cpu_list_lock();
-
- if (CPU_NEXT(first_cpu)) {
- TaskState *ts;
-
- /* Remove the CPU from the list. */
- QTAILQ_REMOVE(&cpus, cpu, node);
-
- cpu_list_unlock();
-
- ts = cpu->opaque;
- if (ts->child_tidptr) {
- put_user_u32(0, ts->child_tidptr);
- sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
- NULL, NULL, 0);
- }
- thread_cpu = NULL;
- object_unref(OBJECT(cpu));
- g_free(ts);
- rcu_unregister_thread();
- pthread_exit(NULL);
- }
-
- cpu_list_unlock();
-#ifdef TARGET_GPROF
- _mcleanup();
-#endif
- gdb_exit(cpu_env, arg1);
- _exit(arg1);
- return 0; /* avoid warning */
- case TARGET_NR_read:
- if (arg3 == 0) {
- return 0;
- } else {
- if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
- return -TARGET_EFAULT;
- ret = get_errno(safe_read(arg1, p, arg3));
- if (ret >= 0 &&
- fd_trans_host_to_target_data(arg1)) {
- ret = fd_trans_host_to_target_data(arg1)(p, ret);
- }
- unlock_user(p, arg2, ret);
- }
- return ret;
- case TARGET_NR_write:
- if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
- return -TARGET_EFAULT;
- if (fd_trans_target_to_host_data(arg1)) {
- void *copy = g_malloc(arg3);
- memcpy(copy, p, arg3);
- ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
- if (ret >= 0) {
- ret = get_errno(safe_write(arg1, copy, ret));
- }
- g_free(copy);
- } else {
- ret = get_errno(safe_write(arg1, p, arg3));
- }
- unlock_user(p, arg2, 0);
- return ret;
-
#ifdef TARGET_NR_open
case TARGET_NR_open:
if (!(p = lock_user_string(arg1)))
@@ -8077,12 +8103,6 @@ static abi_long do_syscall1(void *cpu_env, unsigned num, abi_long arg1,
fd_trans_unregister(ret);
return ret;
#endif
- case TARGET_NR_close:
- fd_trans_unregister(arg1);
- return get_errno(close(arg1));
-
- case TARGET_NR_brk:
- return do_brk(arg1);
#ifdef TARGET_NR_fork
case TARGET_NR_fork:
return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
@@ -12445,6 +12465,11 @@ static impl_fn *syscall_table(unsigned num)
/*
* Other syscalls listed in collation order, with '_' ignored.
*/
+ SYSCALL(brk);
+ SYSCALL(close);
+ SYSCALL(exit);
+ SYSCALL(read);
+ SYSCALL(write);
}
#undef SYSCALL
These are relatively simple unconditionally defined syscalls. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- linux-user/syscall.c | 179 ++++++++++++++++++++++++------------------- 1 file changed, 102 insertions(+), 77 deletions(-) -- 2.17.1