linux-kernel - [RFC][PATCH v4 12/32] objtool: mcount: Replace MIPS offset types

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Date:   Tue, 2 Jun 2020 12:50:05 -0700
From:   Matt Helsley <mhelsley@...are.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Julien Thierry <jthierry@...hat.com>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
        Matt Helsley <mhelsley@...are.com>
Subject: [RFC][PATCH v4 12/32] objtool: mcount: Replace MIPS offset types

Replace MIPS is_fake_mcount code using Elf_Addr with
unsigned long for the offsets. This is consistent with the way
that objtool more generally treats offsets and removes the
last use of the Elf_Addr wrapper.

Signed-off-by: Matt Helsley <mhelsley@...are.com>
---
 tools/objtool/recordmcount.h | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tools/objtool/recordmcount.h b/tools/objtool/recordmcount.h
index a3fb62e88450..1a39f7acac11 100644
--- a/tools/objtool/recordmcount.h
+++ b/tools/objtool/recordmcount.h
@@ -28,7 +28,6 @@
 #undef has_rel_mcount
 #undef tot_relsize
 #undef do_func
-#undef Elf_Addr
 #undef Elf_Ehdr
 #undef Elf_Shdr
 #undef Elf_Rel
@@ -53,7 +52,6 @@
 # define fn_is_fake_mcount	fn_is_fake_mcount64
 # define MIPS_is_fake_mcount	MIPS64_is_fake_mcount
 # define mcount_adjust		mcount_adjust_64
-# define Elf_Addr		Elf64_Addr
 # define Elf_Ehdr		Elf64_Ehdr
 # define Elf_Shdr		Elf64_Shdr
 # define Elf_Rel		Elf64_Rel
@@ -77,7 +75,6 @@
 # define fn_is_fake_mcount	fn_is_fake_mcount32
 # define MIPS_is_fake_mcount	MIPS32_is_fake_mcount
 # define mcount_adjust		mcount_adjust_32
-# define Elf_Addr		Elf32_Addr
 # define Elf_Ehdr		Elf32_Ehdr
 # define Elf_Shdr		Elf32_Shdr
 # define Elf_Rel		Elf32_Rel
@@ -129,11 +126,11 @@ static int mcount_adjust = 0;
 
 static int MIPS_is_fake_mcount(struct reloc const *reloc)
 {
-	static Elf_Addr old_r_offset = ~(Elf_Addr)0;
-	Elf_Addr current_r_offset = reloc->offset;
+	static unsigned long old_r_offset = ~0UL;
+	unsigned long current_r_offset = reloc->offset;
 	int is_fake;
 
-	is_fake = (old_r_offset != ~(Elf_Addr)0) &&
+	is_fake = (old_r_offset != ~0UL) &&
 		(current_r_offset - old_r_offset == MIPS_FAKEMCOUNT_OFFSET);
 	old_r_offset = current_r_offset;
 
-- 
2.20.1