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mbv: global constructors ish

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This commit is contained in:
Paul Mathieu 2025-06-27 13:01:06 -07:00
parent e7b38fb560
commit 2e640690ba
2 changed files with 10 additions and 0 deletions
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7
mbv/apps/app.ld
View File

@ -21,6 +21,13 @@ SECTIONS
*(.rodata*)
} > RAM
.init :
{
__init_array_start = .;
KEEP(*(.init_array*))
__init_array_end = .;
}
.bss (NOLOAD) :
{
_bss_begin = .;

3
mbv/hal/start.cc
View File

@ -2,6 +2,7 @@
extern "C" uint32_t _bss_begin, _bss_end, _initial_stack_pointer;
extern "C" int main();
extern "C" void __libc_init_array();
__attribute__((section(".start"), used, naked)) void _start() {
// clear .bss
@ -11,6 +12,8 @@ __attribute__((section(".start"), used, naked)) void _start() {
asm volatile("la sp, _initial_stack_pointer");
__libc_init_array();
main();
while (true) {