Author: gonzo
Date: Fri Mar 23 17:54:06 2012
New Revision: 233378
URL: http://svn.freebsd.org/changeset/base/233378
Log:
Before jumping to application's entry point set ra == pc in order
to let backtracing routine know to go no further.
Modified:
head/libexec/rtld-elf/mips/rtld_start.S
Modified: head/libexec/rtld-elf/mips/rtld_start.S
==============================================================================
--- head/libexec/rtld-elf/mips/rtld_start.S Fri Mar 23 17:24:52 2012
(r233377)
+++ head/libexec/rtld-elf/mips/rtld_start.S Fri Mar 23 17:54:06 2012
(r233378)
@@ -80,7 +80,8 @@ LEAF(rtld_start)
move a0, s0 /* stack pointer */
move t9, v0
PTR_SUBU sp, 4*SZREG /* ABI requires to reserve memory for 4
regs */
- jr t9 /* _start(sp, cleanup, obj); */
+ move ra,t9 /* RA == PC signals backtrace routine
to stop */
+ j t9 /* _start(sp, cleanup, obj); */
move a3, s3 /* restore ps_strings */
END(rtld_start)
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