[libc] Enable more functions on riscv64.

The list of headers has also been updated. Some duplicated entrypoints
have been removed.

libc/config/linux/riscv64/entrypoints.txt

@@ -54,9 +54,6 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.string.strdup
     libc.src.string.strerror
     libc.src.string.strerror_r
-    libc.src.string.strdup
-    libc.src.string.strerror
-    libc.src.string.strerror_r
     libc.src.string.strlcat
     libc.src.string.strlcpy
     libc.src.string.strlen
@@ -65,12 +62,10 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.string.strncmp
     libc.src.string.strncpy
     libc.src.string.strndup
-    libc.src.string.strndup
     libc.src.string.strnlen
     libc.src.string.strpbrk
     libc.src.string.strrchr
     libc.src.string.strsignal
-    libc.src.string.strsignal
     libc.src.string.strspn
     libc.src.string.strstr
     libc.src.string.strtok
@@ -332,6 +327,44 @@ if(LLVM_LIBC_FULL_BUILD)
     libc.src.network.ntohl
     libc.src.network.ntohs
 
+    # pthread.h entrypoints
+    libc.src.pthread.pthread_atfork
+    libc.src.pthread.pthread_attr_destroy
+    libc.src.pthread.pthread_attr_init
+    libc.src.pthread.pthread_attr_getdetachstate
+    libc.src.pthread.pthread_attr_getguardsize
+    libc.src.pthread.pthread_attr_getstack
+    libc.src.pthread.pthread_attr_getstacksize
+    libc.src.pthread.pthread_attr_setdetachstate
+    libc.src.pthread.pthread_attr_setguardsize
+    libc.src.pthread.pthread_attr_setstack
+    libc.src.pthread.pthread_attr_setstacksize
+    libc.src.pthread.pthread_create
+    libc.src.pthread.pthread_detach
+    libc.src.pthread.pthread_equal
+    libc.src.pthread.pthread_exit
+    libc.src.pthread.pthread_getname_np
+    libc.src.pthread.pthread_getspecific
+    libc.src.pthread.pthread_join
+    libc.src.pthread.pthread_key_create
+    libc.src.pthread.pthread_key_delete
+    libc.src.pthread.pthread_self
+    libc.src.pthread.pthread_setname_np
+    libc.src.pthread.pthread_mutex_destroy
+    libc.src.pthread.pthread_mutex_init
+    libc.src.pthread.pthread_mutex_lock
+    libc.src.pthread.pthread_mutex_unlock
+    libc.src.pthread.pthread_mutexattr_destroy
+    libc.src.pthread.pthread_mutexattr_init
+    libc.src.pthread.pthread_mutexattr_getpshared
+    libc.src.pthread.pthread_mutexattr_getrobust
+    libc.src.pthread.pthread_mutexattr_gettype
+    libc.src.pthread.pthread_mutexattr_setpshared
+    libc.src.pthread.pthread_mutexattr_setrobust
+    libc.src.pthread.pthread_mutexattr_settype
+    libc.src.pthread.pthread_once
+    libc.src.pthread.pthread_setspecific
+
     # sched.h entrypoints
     libc.src.sched.__sched_getcpucount
 
@@ -371,6 +404,18 @@ if(LLVM_LIBC_FULL_BUILD)
     libc.src.stdlib.exit
     libc.src.stdlib.getenv
 
+    # signal.h entrypoints
+    libc.src.signal.raise
+    libc.src.signal.kill
+    libc.src.signal.sigaction
+    libc.src.signal.sigaltstack
+    libc.src.signal.sigdelset
+    libc.src.signal.sigaddset
+    libc.src.signal.sigemptyset
+    libc.src.signal.sigprocmask
+    libc.src.signal.sigfillset
+    libc.src.signal.signal
+
     # threads.h entrypoints
     libc.src.threads.call_once
     libc.src.threads.cnd_broadcast
@@ -408,6 +453,15 @@ if(LLVM_LIBC_FULL_BUILD)
 
     # unistd.h entrypoints
     libc.src.unistd.environ
+    libc.src.unistd.execv
+    libc.src.unistd.getopt
+    libc.src.unistd.optarg
+    libc.src.unistd.optind
+    libc.src.unistd.optopt
+    libc.src.unistd.opterr
+
+    # sys/select.h entrypoints
+    libc.src.sys.select.select
   )
 endif()
 

libc/config/linux/riscv64/headers.txt

@@ -1,12 +1,21 @@
 set(TARGET_PUBLIC_HEADERS
+    libc.include.assert
     libc.include.ctype
     libc.include.errno
+    libc.include.fenv
     libc.include.inttypes
     libc.include.math
+    libc.include.pthread
+    libc.include.signal
     libc.include.sched
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
     libc.include.strings
+    libc.include.sys_mman
+    libc.include.sys_socket
+    libc.include.sys_syscall
+    libc.include.threads
     libc.include.time
+    libc.include.unistd
 )