xiaoxiang781216 commented on a change in pull request #3626:
URL: https://github.com/apache/incubator-nuttx/pull/3626#discussion_r638416602
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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:
But I saw all syscall handler e.g.:
https://github.com/apache/incubator-nuttx/pull/3626/files#diff-0f751c458200754b097958f7d3dd7ef9f8ac93d1ad4b4ea22ef61dffff311873R346-R352
add swich/case to handle SYS_pthread_exit. As my unsterstanding, both
syscall is required:
1. Userspace issue SYS_nx_pthread_exit to trigger the thread exit process
2. Kernel issue SYS_pthread_exit to switch back to userspace and then repeat
step 1.
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