ldso: bfin: add alias from __start to _start

On Blackfin systems, we have underscore prefixes in our ABI.  So instead
of _start, we use __start.  However, the makefile explicitly sets _start
as the entry point to support toolchains that implicitly use other symbols
as the default entry.  It's easy enough to add a hidden alias in the
Blackfin code for free to support this.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/ldso/ldso/bfin/dl-startup.h b/ldso/ldso/bfin/dl-startup.h
index b1c8002..76ae150 100644 (file)
--- a/ldso/ldso/bfin/dl-startup.h
+++ b/ldso/ldso/bfin/dl-startup.h
@@ -40,6 +40,10 @@ __asm__(
        "       .text\n"
        "       .global __start\n"
        "       .type   __start,@function\n"
+       /* Build system expects a "_start" for the entry point;
+          provide it as it's free to do so with aliases.  */
+       "       .set    _start, __start\n"
+       "       .global _start\n"
        "__start:\n"
        "       call    .Lcall\n"
        ".Lcall:\n"