add support for ctors/dtors on arm with modern gcc

[musl] / crt / arm / crti.s

diff --git a/crt/arm/crti.s b/crt/arm/crti.s
index 0dd978a..2f658b7 100644 (file)
--- a/crt/arm/crti.s
+++ b/crt/arm/crti.s
@@ -1,9 +1,27 @@
 .section .init
 .global _init
 _init:
-       push {lr}
+       push {r0,r1,r2,r4,r5,lr}
+
+.weak __fini_array_start
+.weak __fini_array_end
 
 .section .fini
 .global _fini
 _fini:
-       push {lr}
+       push {r4,r5,r6,lr}
+       adr lr, 1f
+       ldr r4, 2f
+       ldr r5, 2f+4
+       add r4, r4, lr
+       add r5, r5, lr
+1:     adr lr, 1b
+       cmp r4, r5
+       beq 3f
+       ldmia r4!, {r3}
+       tst r3,#1
+       moveq pc,r3
+       bx r3
+2:     .word __fini_array_start-1b
+       .word __fini_array_end-1b
+3: