diff options
| author | Alexander Fedotov <alfedotov@gmail.com> | 2019-08-02 15:33:45 +0300 |
|---|---|---|
| committer | Richard Earnshaw <Richard.Earnshaw@arm.com> | 2019-08-05 15:00:53 +0300 |
| commit | bd5596f4fdd8d08966f03057316c1baea754ae4c (patch) | |
| tree | f20dc874d9c5f77353749d55f3a5d850637079f7 | |
| parent | dfffe683038357d106893ef1ba30462b31e7b589 (diff) | |
Align libgloss/arm and libc/sys/arm sources: Lite exit support
Applied changes from commit 2404223:
* arm/crt0.S (_mainCRTStartup): Weak reference to atexit and _fini
when lite exit is enabled.
| -rw-r--r-- | newlib/libc/sys/arm/crt0.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/newlib/libc/sys/arm/crt0.S b/newlib/libc/sys/arm/crt0.S index a55aa365b..5e677a23c 100644 --- a/newlib/libc/sys/arm/crt0.S +++ b/newlib/libc/sys/arm/crt0.S @@ -518,8 +518,17 @@ __change_mode: for _fini to be called at program exit. */ movs r4, r0 movs r5, r1 +#ifdef _LITE_EXIT + /* Make reference to atexit weak to avoid unconditionally pulling in + support code. Refer to comments in __atexit.c for more details. */ + .weak FUNCTION(atexit) + ldr r0, .Latexit + cmp r0, #0 + beq .Lweak_atexit +#endif ldr r0, .Lfini bl FUNCTION (atexit) +.Lweak_atexit: bl FUNCTION (_init) movs r0, r4 movs r1, r5 @@ -589,6 +598,13 @@ change_back: .LC2: .word __bss_end__ #ifdef __USES_INITFINI__ +#ifdef _LITE_EXIT +.Latexit: + .word FUNCTION(atexit) + + /* Weak reference _fini in case of lite exit. */ + .weak FUNCTION(_fini) +#endif .Lfini: .word FUNCTION(_fini) #endif |