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[libc] Run the .preinit_array as well in __init_libc

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The __init_libc function was already running the .init_array functions,
but was never running the .preinit_array functions. Now it runs them
both, in the correct order.
This commit is contained in:
Justin C. Miller
2022-02-13 00:09:36 -08:00
parent 3be4b103a2
commit b46b6363ff
1 changed files with 14 additions and 6 deletions
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20
src/libraries/libc/arch/amd64/crt/init.cpp
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@@ -1,23 +1,31 @@
#include <stddef.h>
using cb = void (*)(void);
extern cb __init_array_start[0];
extern cb __preinit_array_start;
extern cb __preinit_array_end;
extern cb __init_array_start;
extern cb __init_array_end;
namespace {
void
run_global_ctors()
run_ctor_list(cb *array, cb *end)
{
size_t i = 0;
while (true) {
const cb &fp = __init_array_start[i++];
if (&fp == &__init_array_end)
return;
fp();
const cb &ctor = array[i++];
if (&ctor == end) return;
ctor();
}
}
void
run_global_ctors()
{
run_ctor_list(&__preinit_array_start, &__preinit_array_end);
run_ctor_list(&__init_array_start, &__init_array_end);
}
} // namespace
extern "C"