From: Julien Thierry <jthierry@redhat.com>
Date: Fri, 27 Mar 2020 15:28:43 +0000 (+0000)
Subject: objtool: Use arch specific values in restore_reg()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=aff5e16918c3706622b138ea82391d6c597c5660;p=linux.git

objtool: Use arch specific values in restore_reg()

The initial register state is set up by arch specific code. Use the
value the arch code has set when restoring registers from the stack.

Suggested-by: Raphael Gault <raphael.gault@arm.com>
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index efb9640135527..229d61eba1760 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1486,8 +1486,8 @@ static void save_reg(struct insn_state *state, unsigned char reg, int base,
 
 static void restore_reg(struct insn_state *state, unsigned char reg)
 {
-	state->regs[reg].base = CFI_UNDEFINED;
-	state->regs[reg].offset = 0;
+	state->regs[reg].base = initial_func_cfi.regs[reg].base;
+	state->regs[reg].offset = initial_func_cfi.regs[reg].offset;
 }
 
 /*