Firmware/ThreadX4TGFS
8
0
Fork 2
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

implements proper linker script to support TLS

Browse Source 
This change updates the linker script and dependend wile so that thread local
storage sections are properly supported and initailaized
This commit is contained in:
Eyck Jentzsch
2026-02-01 06:43:47 +01:00
parent 6d5871687c
commit 1c9c00235d
7 changed files with 121 additions and 175 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
port/moonlight/bootup.c
View File

@@ -8,6 +8,7 @@
#include <stdint.h>
#include <string.h>
#include <picotls.h>
#ifdef __cplusplus
#define EXTERN_C extern "C"
@@ -24,6 +25,12 @@ EXTERN_C uint8_t __bss_end;
EXTERN_C const uint8_t __data_source;
EXTERN_C uint8_t __data_start;
EXTERN_C uint8_t __data_end;
EXTERN_C const uint8_t __data_source;
EXTERN_C uint8_t __tbss_start;
EXTERN_C uintptr_t __tbss_size;
EXTERN_C const uint8_t __tdata_source;
EXTERN_C uint8_t __tls_base;
EXTERN_C uintptr_t __tdata_size;
EXTERN_C function_t __init_array_start;
EXTERN_C function_t __init_array_end;
@@ -32,10 +39,10 @@ EXTERN_C function_t __fini_array_end;
// This function will be placed by the linker script according to the section
// Raw function 'called' by the CPU with no runtime.
EXTERN_C void _start(void) __attribute__ ((naked,section(".text.init")));
EXTERN_C void _start(void) __attribute__ ((naked,section(".text.boot")));
// Entry and exit points as C functions.
EXTERN_C void _initialize(void) __attribute__ ((noreturn,section(".init")));
EXTERN_C void _initialize(void) __attribute__ ((noreturn,section(".text.boot")));
EXTERN_C void _exit(int exit_code) __attribute__ ((noreturn,noinline,weak));
// Standard entry point, no arguments.
@@ -68,19 +75,22 @@ void _start(void) {
void _initialize(void) {
// Init memory regions
// Clear the .bss section (global variables with no initial values)
memset((void*) &__bss_start,
0,
(&__bss_end - &__bss_start));
memset((void*) &__bss_start, 0, (&__bss_end - &__bss_start));
// Initialize the .data section (global variables with initial values)
memcpy((void*)&__data_start,
(const void*)&__data_source,
(&__data_end - &__data_end));
memcpy((void*)&__data_start, (const void*)&__data_source, (&__data_end - &__data_start));
// Clear the .tbss section (thread local variables with no initial values)
memset((void*) &__tbss_start, 0, __tbss_size);
// Initialize the .tls section (thread local variables with initial values)
memcpy((void*) &__tls_base, (const void*)&__tdata_source, __tdata_size);
// Call constructors
for (const function_t* entry=&__init_array_start;
entry < &__init_array_end;
++entry) {
(*entry)();
}
#ifdef __THREAD_LOCAL_STORAGE
_set_tls(__tls_base)
#endif
int rc = main();
// Call destructors
for (const function_t* entry=&__fini_array_start;