patacongo commented on a change in pull request #3626:
URL: https://github.com/apache/incubator-nuttx/pull/3626#discussion_r638228077
##########
File path: arch/arm/src/armv6-m/svcall.h
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@@ -124,6 +116,17 @@
#define SYS_signal_handler_return (7)
#endif /* CONFIG_BUILD_PROTECTED */
+
+/* SYS call 5:
+ *
+ * void up_pthread_start(pthread_startroutine_t startup,
+ * pthread_startroutine_t entrypt, pthread_addr_t arg)
+ * noreturn_function
+ */
+
+#define SYS_pthread_start (5)
Review comment:
> where define SYS_pthread_exit?
It is a normal system call. SYS_pthread_start is not. The start function is
an internal chip-specific OS interface, SYS_nx_pthread_exit, is part of the
common, normal user interface and you will find it in nuttx/syscall. The
actual user interface pthread_exit() is a callable function in
libs/libc/pthread and not a system call(). The whole point of the change was
to get pthread_exit() to run in user space.
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