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Diffstat (limited to 'lib/mlibc/sysdeps/linux/generic/entry.cpp')
-rw-r--r--lib/mlibc/sysdeps/linux/generic/entry.cpp38
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/mlibc/sysdeps/linux/generic/entry.cpp b/lib/mlibc/sysdeps/linux/generic/entry.cpp
new file mode 100644
index 0000000..aa049ce
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/generic/entry.cpp
@@ -0,0 +1,38 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <bits/ensure.h>
+#include <mlibc/elf/startup.h>
+#include <sys/auxv.h>
+
+// defined by the POSIX library
+void __mlibc_initLocale();
+
+extern "C" uintptr_t *__dlapi_entrystack();
+extern "C" void __dlapi_enter(uintptr_t *);
+
+extern char **environ;
+static mlibc::exec_stack_data __mlibc_stack_data;
+
+size_t __hwcap;
+
+struct LibraryGuard {
+ LibraryGuard();
+};
+
+static LibraryGuard guard;
+
+LibraryGuard::LibraryGuard() {
+ __mlibc_initLocale();
+
+ // Parse the exec() stack.
+ mlibc::parse_exec_stack(__dlapi_entrystack(), &__mlibc_stack_data);
+ mlibc::set_startup_data(__mlibc_stack_data.argc, __mlibc_stack_data.argv,
+ __mlibc_stack_data.envp);
+}
+
+extern "C" void __mlibc_entry(uintptr_t *entry_stack, int (*main_fn)(int argc, char *argv[], char *env[])) {
+ __dlapi_enter(entry_stack);
+ __hwcap = getauxval(AT_HWCAP);
+ auto result = main_fn(__mlibc_stack_data.argc, __mlibc_stack_data.argv, environ);
+ exit(result);
+}