From: Matt Helsley <mhelsley@vmware.com>
To: <linux-kernel@vger.kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>,
Sami Tolvanen <samitolvanen@google.com>,
Julien Thierry <jthierry@redhat.com>,
Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
Matt Helsley <mhelsley@vmware.com>
Subject: [RFC][PATCH v4 28/32] objtool: mcount: Move sift_rel_mcount out of wrapper file
Date: Tue, 2 Jun 2020 12:50:21 -0700 [thread overview]
Message-ID: <f2a0b91b6859e5aaffe4933c60b4ffb6a54fb3d7.1591125127.git.mhelsley@vmware.com> (raw)
In-Reply-To: <cover.1591125127.git.mhelsley@vmware.com>
Now that this function no longer uses any of the old recordmcount
wrapper code we can move it out of the wrapper too.
Signed-off-by: Matt Helsley <mhelsley@vmware.com>
---
tools/objtool/recordmcount.c | 47 +++++++++++++++++++++++++++++++++
tools/objtool/recordmcount.h | 50 ------------------------------------
2 files changed, 47 insertions(+), 50 deletions(-)
diff --git a/tools/objtool/recordmcount.c b/tools/objtool/recordmcount.c
index ef3c360a3db9..601be2504666 100644
--- a/tools/objtool/recordmcount.c
+++ b/tools/objtool/recordmcount.c
@@ -394,6 +394,53 @@ static int mcount_adjust = 0;
/* Size of an entry in __mcount_loc; 4 or 8 */
static size_t loc_size;
+/*
+ * Look at the relocations in order to find the calls to mcount.
+ * Accumulate the section offsets that are found, and their relocation info,
+ * onto the end of the existing arrays.
+ */
+static void sift_rel_mcount(GElf_Addr **mlocpp,
+ GElf_Sxword *r_offsetp,
+ void **const mrelpp,
+ const struct section * const rels,
+ unsigned const recsym_index,
+ unsigned long const recval,
+ unsigned const reltype,
+ bool is_rela)
+{
+ GElf_Rel *mrelp = *mrelpp;
+ GElf_Rela *mrelap = *mrelpp;
+ unsigned int mcount_sym_info = 0;
+ struct reloc *reloc;
+
+ list_for_each_entry(reloc, &rels->reloc_list, list) {
+ unsigned long addend;
+
+ if (!mcount_sym_info)
+ mcount_sym_info = get_mcount_sym_info(reloc);
+
+ if (mcount_sym_info != GELF_R_INFO(reloc->sym->idx, reloc->type) || is_fake_mcount(reloc))
+ continue;
+
+ addend = reloc->offset - recval + mcount_adjust;
+ if (is_rela) {
+ mrelap->r_offset = *r_offsetp;
+ mrelap->r_info = GELF_R_INFO(recsym_index, reltype);
+ mrelap->r_addend = addend;
+ mrelap++;
+ **mlocpp = 0;
+ } else {
+ mrelp->r_offset = *r_offsetp;
+ mrelp->r_info = GELF_R_INFO(recsym_index, reltype);
+ mrelp++;
+ **mlocpp = addend;
+ }
+ (*mlocpp)++;
+ r_offsetp += loc_size;
+ }
+ *mrelpp = is_rela ? (void *)mrelap : (void *)mrelp;
+}
+
/* 32 bit and 64 bit are very similar */
#include "recordmcount.h"
#define RECORD_MCOUNT_64
diff --git a/tools/objtool/recordmcount.h b/tools/objtool/recordmcount.h
index b58f0cc58f76..f12189331e27 100644
--- a/tools/objtool/recordmcount.h
+++ b/tools/objtool/recordmcount.h
@@ -17,67 +17,17 @@
* This conversion to macros was done by:
* Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
*/
-#undef sift_rel_mcount
#undef do_func
#undef Elf_Rela
#ifdef RECORD_MCOUNT_64
-# define sift_rel_mcount sift64_rel_mcount
# define do_func do64
# define Elf_Rela Elf64_Rela
#else
-# define sift_rel_mcount sift32_rel_mcount
# define do_func do32
# define Elf_Rela Elf32_Rela
#endif
-/*
- * Look at the relocations in order to find the calls to mcount.
- * Accumulate the section offsets that are found, and their relocation info,
- * onto the end of the existing arrays.
- */
-static void sift_rel_mcount(GElf_Addr **mlocpp,
- GElf_Sxword *r_offsetp,
- void **const mrelpp,
- const struct section * const rels,
- unsigned const recsym_index,
- unsigned long const recval,
- unsigned const reltype,
- bool is_rela)
-{
- GElf_Rel *mrelp = *mrelpp;
- GElf_Rela *mrelap = *mrelpp;
- unsigned int mcount_sym_info = 0;
- struct reloc *reloc;
-
- list_for_each_entry(reloc, &rels->reloc_list, list) {
- unsigned long addend;
-
- if (!mcount_sym_info)
- mcount_sym_info = get_mcount_sym_info(reloc);
-
- if (mcount_sym_info != GELF_R_INFO(reloc->sym->idx, reloc->type) || is_fake_mcount(reloc))
- continue;
-
- addend = reloc->offset - recval + mcount_adjust;
- if (is_rela) {
- mrelap->r_offset = *r_offsetp;
- mrelap->r_info = GELF_R_INFO(recsym_index, reltype);
- mrelap->r_addend = addend;
- mrelap++;
- **mlocpp = 0;
- } else {
- mrelp->r_offset = *r_offsetp;
- mrelp->r_info = GELF_R_INFO(recsym_index, reltype);
- mrelp++;
- **mlocpp = addend;
- }
- (*mlocpp)++;
- r_offsetp += loc_size;
- }
- *mrelpp = is_rela ? (void *)mrelap : (void *)mrelp;
-}
-
/* Overall supervision for Elf32 ET_REL file. */
static int do_func(unsigned const reltype)
--
2.20.1
next prev parent reply other threads:[~2020-06-02 19:53 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 19:49 [RFC][PATCH v4 00/32] objtool: Make recordmcount a subcommand Matt Helsley
2020-06-02 19:49 ` [RFC][PATCH v4 01/32] objtool: Prepare to merge recordmcount Matt Helsley
2020-06-09 8:54 ` Julien Thierry
2020-06-09 15:42 ` Matt Helsley
2020-06-09 19:31 ` Julien Thierry
2020-06-02 19:49 ` [RFC][PATCH v4 02/32] objtool: Make recordmcount into mcount subcmd Matt Helsley
2020-06-09 9:00 ` Julien Thierry
2020-06-09 18:39 ` Matt Helsley
2020-06-09 18:52 ` Steven Rostedt
2020-06-09 18:56 ` Matt Helsley
2020-06-09 19:11 ` Julien Thierry
2020-06-02 19:49 ` [RFC][PATCH v4 03/32] objtool: recordmcount: Start using objtool's elf wrapper Matt Helsley
2020-06-02 19:49 ` [RFC][PATCH v4 04/32] objtool: recordmcount: Search for __mcount_loc before walking the sections Matt Helsley
2020-06-02 19:49 ` [RFC][PATCH v4 05/32] objtool: recordmcount: Convert do_func() relhdrs Matt Helsley
2020-06-02 19:49 ` [RFC][PATCH v4 06/32] objtool: mcount: Remove unused fname parameter Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 07/32] objtool: mcount: Use libelf for section header names Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 08/32] objtool: mcount: Walk objtool Elf structs in find_secsym_ndx Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 09/32] objtool: mcount: Use symbol structs to find mcount relocations Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 10/32] objtool: mcount: Walk relocation lists Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 11/32] objtool: mcount: Move get_mcountsym Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 12/32] objtool: mcount: Replace MIPS offset types Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 13/32] objtool: mcount: Move is_fake_mcount() Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 14/32] objtool: mcount: Stop using ehdr in find_section_sym_index Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 15/32] objtool: mcount: Move find_section_sym_index() Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 16/32] objtool: mcount: Restrict using ehdr in append_func() Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 17/32] objtool: mcount: Use objtool ELF to write Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 18/32] objtool: mcount: Move nop_mcount() Matt Helsley
2020-06-12 13:26 ` Peter Zijlstra
2020-06-12 16:05 ` Peter Zijlstra
2020-06-17 17:36 ` Matt Helsley
2020-06-17 18:30 ` Peter Zijlstra
2020-06-13 19:49 ` Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 19/32] objtool: mcount: Move has_rel_mcount() and tot_relsize() Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 20/32] objtool: mcount: Move relocation entry size detection Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 21/32] objtool: mcount: Only keep ELF file size Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 22/32] objtool: mcount: Use ELF header from objtool Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 23/32] objtool: mcount: Remove unused file mapping Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 24/32] objtool: mcount: Reduce usage of _size wrapper Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 25/32] objtool: mcount: Move mcount_adjust out of wrapper Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 26/32] objtool: mcount: Pre-allocate new ELF sections Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 27/32] objtool: mcount: Generic location and relocation table types Matt Helsley
2020-06-09 6:41 ` Kamalesh Babulal
2020-06-09 18:12 ` Matt Helsley
2020-06-10 4:35 ` Kamalesh Babulal
2020-06-02 19:50 ` Matt Helsley [this message]
2020-06-02 19:50 ` [RFC][PATCH v4 29/32] objtool: mcount: Remove wrapper for ELF relocation type Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 30/32] objtool: mcount: Remove wrapper double-include trick Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 31/32] objtool: mcount: Remove endian wrappers Matt Helsley
2020-06-02 19:50 ` [RFC][PATCH v4 32/32] objtool: mcount: Rename Matt Helsley
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