Add comments about why "call" instead of "jump" is used.

Related CL: https://android-review.googlesource.com/#/c/38651 Change-Id: I425e06f08fda90501a686c7e437d4e70fc1e4a1b
2012-07-25 15:39:00 -07:00
parent e592bc7c06
commit e395327a7c
4 changed files with 4 additions and 0 deletions
--- a/ndk/platforms/android-3/arch-arm/src/crtbegin_dynamic.S
+++ b/ndk/platforms/android-3/arch-arm/src/crtbegin_dynamic.S
@@ -53,6 +53,7 @@ _start:
 	ldr	r2, =main
 	adr	r3, 1f
 	ldr	r4, =__libc_init
+# Use blx intead of bx so stack unwinding past __libc_init can terminate at _start
 	blx	r4
 	mov	r0, #0
 	bx	r0