Josh Poimboeuf deecd4d71b objtool: Fix '-mtune=atom' decoding support in objtool 2.0 ... With '-mtune=atom', which is enabled with CONFIG_MATOM=y, GCC uses some unusual instructions for setting up the stack. Instead of: mov %rsp, %rbp it does: lea (%rsp), %rbp And instead of: add imm, %rsp it does: lea disp(%rsp), %rsp Add support for these instructions to the objtool decoder. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: baa41469a7 ("objtool: Implement stack validation 2.0") Link: http://lkml.kernel.org/r/4ea1db896e821226efe1f8e09f270771bde47e65.1501188854.git.jpoimboe@redhat.com [ This is a cherry-picked version of upcoming commit 5b8de48e82. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-08-21 16:07:27 +02:00
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