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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/scripts

Name	Size	Mode	Actions
basic/	-	0755	rm
clang-tools/	-	0755	rm
coccinelle/	-	0755	rm
dtc/	-	0755	rm
gcc-plugins/	-	0755	rm
gdb/	-	0755	rm
genksyms/	-	0755	rm
kconfig/	-	0755	rm
ksymoops/	-	0755	rm
mod/	-	0755	rm
package/	-	0755	rm
selinux/	-	0755	rm
adjust_autoksyms.sh	3010	0755	edit dl rm
asn1_compiler	28008	0755	edit dl rm
asn1_compiler.c	36391	0644	edit dl rm
bin2c	7024	0755	edit dl rm
bin2c.c	743	0644	edit dl rm
bloat-o-meter	3313	0755	edit dl rm
bootgraph.pl	6426	0755	edit dl rm
bpf_doc.py	25515	0755	edit dl rm
cc-can-link.sh	166	0755	edit dl rm
checkincludes.pl	1984	0755	edit dl rm
checkkconfigsymbols.py	15895	0755	edit dl rm
checkpatch.pl	197186	0755	edit dl rm
checkstack.pl	5303	0755	edit dl rm
checksyscalls.sh	7094	0755	edit dl rm
checkversion.pl	1938	0755	edit dl rm
check_00index.sh	1333	0755	edit dl rm
check_extable.sh	5049	0755	edit dl rm
clang-version.sh	635	0755	edit dl rm
cleanfile	3538	0755	edit dl rm
cleanpatch	5178	0755	edit dl rm
coccicheck	7407	0755	edit dl rm
config	4635	0755	edit dl rm
conmakehash	11616	0755	edit dl rm
conmakehash.c	6128	0644	edit dl rm
const_structs.checkpatch	964	0644	edit dl rm
decodecode	2525	0755	edit dl rm
decode_stacktrace.sh	3834	0755	edit dl rm
depmod.sh	1119	0755	edit dl rm
diffconfig	3821	0755	edit dl rm
documentation-file-ref-check	3548	0755	edit dl rm
export_report.pl	4654	0755	edit dl rm
extract-cert	11616	0755	edit dl rm
extract-cert.c	3541	0644	edit dl rm
extract-ikconfig	1734	0755	edit dl rm
extract-module-sig.pl	3742	0755	edit dl rm
extract-sys-certs.pl	3832	0755	edit dl rm
extract-vmlinux	1725	0755	edit dl rm
extract_xc3028.pl	45665	0755	edit dl rm
faddr2line	6303	0755	edit dl rm
file-size.sh	86	0755	edit dl rm
find-unused-docs.sh	1310	0755	edit dl rm
gcc-goto.sh	530	0755	edit dl rm
gcc-ld	711	0755	edit dl rm
gcc-plugin.sh	1090	0755	edit dl rm
gcc-version.sh	857	0755	edit dl rm
gcc-x86_32-has-stack-protector.sh	173	0755	edit dl rm
gcc-x86_64-has-stack-protector.sh	198	0755	edit dl rm
gen_initramfs_list.sh	8224	0755	edit dl rm
get_dvb_firmware	25824	0755	edit dl rm
get_maintainer.pl	67369	0755	edit dl rm
gfp-translate	1752	0755	edit dl rm
headerdep.pl	3582	0755	edit dl rm
headers.sh	512	0755	edit dl rm
headers_check.pl	3815	0755	edit dl rm
headers_install.sh	1397	0755	edit dl rm
insert-sys-cert.c	9084	0644	edit dl rm
kallsyms	19992	0755	edit dl rm
kallsyms.c	18580	0644	edit dl rm
Kbuild.include	15468	0644	edit dl rm
Kconfig.include	1173	0644	edit dl rm
kernel-doc	62560	0755	edit dl rm
ld-version.sh	269	0755	edit dl rm
leaking_addresses.pl	13160	0755	edit dl rm
Lindent	502	0755	edit dl rm
link-vmlinux.sh	9176	0755	edit dl rm
Makefile	1741	0644	edit dl rm
Makefile.asm-generic	1193	0644	edit dl rm
Makefile.build	19707	0644	edit dl rm
Makefile.clean	2883	0644	edit dl rm
Makefile.dtbinst	1116	0644	edit dl rm
Makefile.extrawarn	2770	0644	edit dl rm
Makefile.gcc-plugins	1861	0644	edit dl rm
Makefile.headersinst	4079	0644	edit dl rm
Makefile.host	6520	0644	edit dl rm
Makefile.kasan	1679	0644	edit dl rm
Makefile.kcov	319	0644	edit dl rm
Makefile.kcsan	118	0644	edit dl rm
Makefile.lib	15535	0644	edit dl rm
Makefile.modbuiltin	1717	0644	edit dl rm
Makefile.modinst	1149	0644	edit dl rm
Makefile.modpost	5430	0644	edit dl rm
Makefile.modsign	897	0644	edit dl rm
Makefile.ubsan	951	0644	edit dl rm
makelst	808	0755	edit dl rm
markup_oops.pl	8273	0755	edit dl rm
mkcompile_h	2628	0755	edit dl rm
mkmakefile	1218	0755	edit dl rm
mksysmap	1359	0755	edit dl rm
mkuboot.sh	414	0755	edit dl rm
module-common.lds	901	0644	edit dl rm
modules.order	0	0644	edit dl rm
namespace.pl	13358	0755	edit dl rm
objdiff	2917	0755	edit dl rm
parse-maintainers.pl	4646	0755	edit dl rm
patch-kernel	10185	0755	edit dl rm
pnmtologo	15720	0755	edit dl rm
pnmtologo.c	12197	0644	edit dl rm
profile2linkerlist.pl	410	0755	edit dl rm
prune-kernel	708	0755	edit dl rm
recordmcount	24008	0755	edit dl rm
recordmcount.c	17062	0644	edit dl rm
recordmcount.h	16772	0644	edit dl rm
recordmcount.pl	18709	0755	edit dl rm
setlocalversion	4013	0755	edit dl rm
show_delta	3076	0755	edit dl rm
sign-file	15768	0755	edit dl rm
sign-file.c	9994	0644	edit dl rm
sortextable	15712	0755	edit dl rm
sortextable.c	10411	0644	edit dl rm
sortextable.h	5614	0644	edit dl rm
spelling.txt	25611	0644	edit dl rm
sphinx-pre-install	14378	0755	edit dl rm
split-man.pl	600	0755	edit dl rm
stackdelta	1883	0755	edit dl rm
stackusage	794	0755	edit dl rm
subarch.include	641	0644	edit dl rm
tags.sh	9789	0755	edit dl rm
test_fortify.sh	2281	0644	edit dl rm
unifdef	36192	0755	edit dl rm
unifdef.c	35637	0644	edit dl rm
ver_linux	2747	0755	edit dl rm
xen-hypercalls.sh	386	0644	edit dl rm
xz_wrap.sh	562	0755	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/scripts/recordmcount.h (16772B)

/*
 * recordmcount.h
 *
 * This code was taken out of recordmcount.c written by
 * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>.  All rights reserved.
 *
 * The original code had the same algorithms for both 32bit
 * and 64bit ELF files, but the code was duplicated to support
 * the difference in structures that were used. This
 * file creates a macro of everything that is different between
 * the 64 and 32 bit code, such that by including this header
 * twice we can create both sets of functions by including this
 * header once with RECORD_MCOUNT_64 undefined, and again with
 * it defined.
 *
 * This conversion to macros was done by:
 * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
 *
 * Licensed under the GNU General Public License, version 2 (GPLv2).
 */
#undef append_func
#undef is_fake_mcount
#undef fn_is_fake_mcount
#undef MIPS_is_fake_mcount
#undef mcount_adjust
#undef sift_rel_mcount
#undef nop_mcount
#undef find_secsym_ndx
#undef __has_rel_mcount
#undef has_rel_mcount
#undef tot_relsize
#undef get_mcountsym
#undef get_sym_str_and_relp
#undef do_func
#undef Elf_Addr
#undef Elf_Ehdr
#undef Elf_Shdr
#undef Elf_Rel
#undef Elf_Rela
#undef Elf_Sym
#undef ELF_R_SYM
#undef Elf_r_sym
#undef ELF_R_INFO
#undef Elf_r_info
#undef ELF_ST_BIND
#undef ELF_ST_TYPE
#undef fn_ELF_R_SYM
#undef fn_ELF_R_INFO
#undef uint_t
#undef _w
#undef _align
#undef _size

#ifdef RECORD_MCOUNT_64
# define append_func		append64
# define sift_rel_mcount	sift64_rel_mcount
# define nop_mcount		nop_mcount_64
# define find_secsym_ndx	find64_secsym_ndx
# define __has_rel_mcount	__has64_rel_mcount
# define has_rel_mcount		has64_rel_mcount
# define tot_relsize		tot64_relsize
# define get_sym_str_and_relp	get_sym_str_and_relp_64
# define do_func		do64
# define get_mcountsym		get_mcountsym_64
# define is_fake_mcount		is_fake_mcount64
# 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
# define Elf_Rela		Elf64_Rela
# define Elf_Sym		Elf64_Sym
# define ELF_R_SYM		ELF64_R_SYM
# define Elf_r_sym		Elf64_r_sym
# define ELF_R_INFO		ELF64_R_INFO
# define Elf_r_info		Elf64_r_info
# define ELF_ST_BIND		ELF64_ST_BIND
# define ELF_ST_TYPE		ELF64_ST_TYPE
# define fn_ELF_R_SYM		fn_ELF64_R_SYM
# define fn_ELF_R_INFO		fn_ELF64_R_INFO
# define uint_t			uint64_t
# define _w			w8
# define _align			7u
# define _size			8
#else
# define append_func		append32
# define sift_rel_mcount	sift32_rel_mcount
# define nop_mcount		nop_mcount_32
# define find_secsym_ndx	find32_secsym_ndx
# define __has_rel_mcount	__has32_rel_mcount
# define has_rel_mcount		has32_rel_mcount
# define tot_relsize		tot32_relsize
# define get_sym_str_and_relp	get_sym_str_and_relp_32
# define do_func		do32
# define get_mcountsym		get_mcountsym_32
# define is_fake_mcount		is_fake_mcount32
# 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
# define Elf_Rela		Elf32_Rela
# define Elf_Sym		Elf32_Sym
# define ELF_R_SYM		ELF32_R_SYM
# define Elf_r_sym		Elf32_r_sym
# define ELF_R_INFO		ELF32_R_INFO
# define Elf_r_info		Elf32_r_info
# define ELF_ST_BIND		ELF32_ST_BIND
# define ELF_ST_TYPE		ELF32_ST_TYPE
# define fn_ELF_R_SYM		fn_ELF32_R_SYM
# define fn_ELF_R_INFO		fn_ELF32_R_INFO
# define uint_t			uint32_t
# define _w			w
# define _align			3u
# define _size			4
#endif

/* Functions and pointers that do_file() may override for specific e_machine. */
static int fn_is_fake_mcount(Elf_Rel const *rp)
{
	return 0;
}
static int (*is_fake_mcount)(Elf_Rel const *rp) = fn_is_fake_mcount;

static uint_t fn_ELF_R_SYM(Elf_Rel const *rp)
{
	return ELF_R_SYM(_w(rp->r_info));
}
static uint_t (*Elf_r_sym)(Elf_Rel const *rp) = fn_ELF_R_SYM;

static void fn_ELF_R_INFO(Elf_Rel *const rp, unsigned sym, unsigned type)
{
	rp->r_info = _w(ELF_R_INFO(sym, type));
}
static void (*Elf_r_info)(Elf_Rel *const rp, unsigned sym, unsigned type) = fn_ELF_R_INFO;

static int mcount_adjust = 0;

/*
 * MIPS mcount long call has 2 _mcount symbols, only the position of the 1st
 * _mcount symbol is needed for dynamic function tracer, with it, to disable
 * tracing(ftrace_make_nop), the instruction in the position is replaced with
 * the "b label" instruction, to enable tracing(ftrace_make_call), replace the
 * instruction back. So, here, we set the 2nd one as fake and filter it.
 *
 * c:	3c030000	lui	v1,0x0		<-->	b	label
 *		c: R_MIPS_HI16	_mcount
 *		c: R_MIPS_NONE	*ABS*
 *		c: R_MIPS_NONE	*ABS*
 * 10:	64630000	daddiu	v1,v1,0
 *		10: R_MIPS_LO16	_mcount
 *		10: R_MIPS_NONE	*ABS*
 *		10: R_MIPS_NONE	*ABS*
 * 14:	03e0082d	move	at,ra
 * 18:	0060f809	jalr	v1
 * label:
 */
#define MIPS_FAKEMCOUNT_OFFSET	4

static int MIPS_is_fake_mcount(Elf_Rel const *rp)
{
	static Elf_Addr old_r_offset = ~(Elf_Addr)0;
	Elf_Addr current_r_offset = _w(rp->r_offset);
	int is_fake;

is_fake = (old_r_offset != ~(Elf_Addr)0) &&
		(current_r_offset - old_r_offset == MIPS_FAKEMCOUNT_OFFSET);
	old_r_offset = current_r_offset;

return is_fake;
}

/* Append the new shstrtab, Elf_Shdr[], __mcount_loc and its relocations. */
static void append_func(Elf_Ehdr *const ehdr,
			Elf_Shdr *const shstr,
			uint_t const *const mloc0,
			uint_t const *const mlocp,
			Elf_Rel const *const mrel0,
			Elf_Rel const *const mrelp,
			unsigned int const rel_entsize,
			unsigned int const symsec_sh_link)
{
	/* Begin constructing output file */
	Elf_Shdr mcsec;
	char const *mc_name = (sizeof(Elf_Rela) == rel_entsize)
		? ".rela__mcount_loc"
		:  ".rel__mcount_loc";
	unsigned const old_shnum = w2(ehdr->e_shnum);
	uint_t const old_shoff = _w(ehdr->e_shoff);
	uint_t const old_shstr_sh_size   = _w(shstr->sh_size);
	uint_t const old_shstr_sh_offset = _w(shstr->sh_offset);
	uint_t t = 1 + strlen(mc_name) + _w(shstr->sh_size);
	uint_t new_e_shoff;

shstr->sh_size = _w(t);
	shstr->sh_offset = _w(sb.st_size);
	t += sb.st_size;
	t += (_align & -t);  /* word-byte align */
	new_e_shoff = t;

/* body for new shstrtab */
	ulseek(fd_map, sb.st_size, SEEK_SET);
	uwrite(fd_map, old_shstr_sh_offset + (void *)ehdr, old_shstr_sh_size);
	uwrite(fd_map, mc_name, 1 + strlen(mc_name));

/* old(modified) Elf_Shdr table, word-byte aligned */
	ulseek(fd_map, t, SEEK_SET);
	t += sizeof(Elf_Shdr) * old_shnum;
	uwrite(fd_map, old_shoff + (void *)ehdr,
	       sizeof(Elf_Shdr) * old_shnum);

/* new sections __mcount_loc and .rel__mcount_loc */
	t += 2*sizeof(mcsec);
	mcsec.sh_name = w((sizeof(Elf_Rela) == rel_entsize) + strlen(".rel")
		+ old_shstr_sh_size);
	mcsec.sh_type = w(SHT_PROGBITS);
	mcsec.sh_flags = _w(SHF_ALLOC);
	mcsec.sh_addr = 0;
	mcsec.sh_offset = _w(t);
	mcsec.sh_size = _w((void *)mlocp - (void *)mloc0);
	mcsec.sh_link = 0;
	mcsec.sh_info = 0;
	mcsec.sh_addralign = _w(_size);
	mcsec.sh_entsize = _w(_size);
	uwrite(fd_map, &mcsec, sizeof(mcsec));

mcsec.sh_name = w(old_shstr_sh_size);
	mcsec.sh_type = (sizeof(Elf_Rela) == rel_entsize)
		? w(SHT_RELA)
		: w(SHT_REL);
	mcsec.sh_flags = 0;
	mcsec.sh_addr = 0;
	mcsec.sh_offset = _w((void *)mlocp - (void *)mloc0 + t);
	mcsec.sh_size   = _w((void *)mrelp - (void *)mrel0);
	mcsec.sh_link = w(symsec_sh_link);
	mcsec.sh_info = w(old_shnum);
	mcsec.sh_addralign = _w(_size);
	mcsec.sh_entsize = _w(rel_entsize);
	uwrite(fd_map, &mcsec, sizeof(mcsec));

uwrite(fd_map, mloc0, (void *)mlocp - (void *)mloc0);
	uwrite(fd_map, mrel0, (void *)mrelp - (void *)mrel0);

ehdr->e_shoff = _w(new_e_shoff);
	ehdr->e_shnum = w2(2 + w2(ehdr->e_shnum));  /* {.rel,}__mcount_loc */
	ulseek(fd_map, 0, SEEK_SET);
	uwrite(fd_map, ehdr, sizeof(*ehdr));
}

static unsigned get_mcountsym(Elf_Sym const *const sym0,
			      Elf_Rel const *relp,
			      char const *const str0)
{
	unsigned mcountsym = 0;

Elf_Sym const *const symp =
		&sym0[Elf_r_sym(relp)];
	char const *symname = &str0[w(symp->st_name)];
	char const *mcount = gpfx == '_' ? "_mcount" : "mcount";
	char const *fentry = "__fentry__";

if (symname[0] == '.')
		++symname;  /* ppc64 hack */
	if (strcmp(mcount, symname) == 0 ||
	    (altmcount && strcmp(altmcount, symname) == 0) ||
	    (strcmp(fentry, symname) == 0))
		mcountsym = Elf_r_sym(relp);

return mcountsym;
}

static void get_sym_str_and_relp(Elf_Shdr const *const relhdr,
				 Elf_Ehdr const *const ehdr,
				 Elf_Sym const **sym0,
				 char const **str0,
				 Elf_Rel const **relp)
{
	Elf_Shdr *const shdr0 = (Elf_Shdr *)(_w(ehdr->e_shoff)
		+ (void *)ehdr);
	unsigned const symsec_sh_link = w(relhdr->sh_link);
	Elf_Shdr const *const symsec = &shdr0[symsec_sh_link];
	Elf_Shdr const *const strsec = &shdr0[w(symsec->sh_link)];
	Elf_Rel const *const rel0 = (Elf_Rel const *)(_w(relhdr->sh_offset)
		+ (void *)ehdr);

*sym0 = (Elf_Sym const *)(_w(symsec->sh_offset)
				  + (void *)ehdr);

*str0 = (char const *)(_w(strsec->sh_offset)
			       + (void *)ehdr);

*relp = rel0;
}

/*
 * 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 uint_t *sift_rel_mcount(uint_t *mlocp,
			       unsigned const offbase,
			       Elf_Rel **const mrelpp,
			       Elf_Shdr const *const relhdr,
			       Elf_Ehdr const *const ehdr,
			       unsigned const recsym,
			       uint_t const recval,
			       unsigned const reltype)
{
	uint_t *const mloc0 = mlocp;
	Elf_Rel *mrelp = *mrelpp;
	Elf_Sym const *sym0;
	char const *str0;
	Elf_Rel const *relp;
	unsigned rel_entsize = _w(relhdr->sh_entsize);
	unsigned const nrel = _w(relhdr->sh_size) / rel_entsize;
	unsigned mcountsym = 0;
	unsigned t;

get_sym_str_and_relp(relhdr, ehdr, &sym0, &str0, &relp);

for (t = nrel; t; --t) {
		if (!mcountsym)
			mcountsym = get_mcountsym(sym0, relp, str0);

if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
			uint_t const addend =
				_w(_w(relp->r_offset) - recval + mcount_adjust);
			mrelp->r_offset = _w(offbase
				+ ((void *)mlocp - (void *)mloc0));
			Elf_r_info(mrelp, recsym, reltype);
			if (rel_entsize == sizeof(Elf_Rela)) {
				((Elf_Rela *)mrelp)->r_addend = addend;
				*mlocp++ = 0;
			} else
				*mlocp++ = addend;

mrelp = (Elf_Rel *)(rel_entsize + (void *)mrelp);
		}
		relp = (Elf_Rel const *)(rel_entsize + (void *)relp);
	}
	*mrelpp = mrelp;
	return mlocp;
}

/*
 * Read the relocation table again, but this time its called on sections
 * that are not going to be traced. The mcount calls here will be converted
 * into nops.
 */
static void nop_mcount(Elf_Shdr const *const relhdr,
		       Elf_Ehdr const *const ehdr,
		       const char *const txtname)
{
	Elf_Shdr *const shdr0 = (Elf_Shdr *)(_w(ehdr->e_shoff)
		+ (void *)ehdr);
	Elf_Sym const *sym0;
	char const *str0;
	Elf_Rel const *relp;
	Elf_Shdr const *const shdr = &shdr0[w(relhdr->sh_info)];
	unsigned rel_entsize = _w(relhdr->sh_entsize);
	unsigned const nrel = _w(relhdr->sh_size) / rel_entsize;
	unsigned mcountsym = 0;
	unsigned t;
	int once = 0;

get_sym_str_and_relp(relhdr, ehdr, &sym0, &str0, &relp);

for (t = nrel; t; --t) {
		int ret = -1;

if (!mcountsym)
			mcountsym = get_mcountsym(sym0, relp, str0);

if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
			if (make_nop)
				ret = make_nop((void *)ehdr, _w(shdr->sh_offset) + _w(relp->r_offset));
			if (warn_on_notrace_sect && !once) {
				printf("Section %s has mcount callers being ignored\n",
				       txtname);
				once = 1;
				/* just warn? */
				if (!make_nop)
					return;
			}
		}

/*
		 * If we successfully removed the mcount, mark the relocation
		 * as a nop (don't do anything with it).
		 */
		if (!ret) {
			Elf_Rel rel;
			rel = *(Elf_Rel *)relp;
			Elf_r_info(&rel, Elf_r_sym(relp), rel_type_nop);
			ulseek(fd_map, (void *)relp - (void *)ehdr, SEEK_SET);
			uwrite(fd_map, &rel, sizeof(rel));
		}
		relp = (Elf_Rel const *)(rel_entsize + (void *)relp);
	}
}

/*
 * Find a symbol in the given section, to be used as the base for relocating
 * the table of offsets of calls to mcount.  A local or global symbol suffices,
 * but avoid a Weak symbol because it may be overridden; the change in value
 * would invalidate the relocations of the offsets of the calls to mcount.
 * Often the found symbol will be the unnamed local symbol generated by
 * GNU 'as' for the start of each section.  For example:
 *    Num:    Value  Size Type    Bind   Vis      Ndx Name
 *      2: 00000000     0 SECTION LOCAL  DEFAULT    1
 */
static unsigned find_secsym_ndx(unsigned const txtndx,
				char const *const txtname,
				uint_t *const recvalp,
				Elf_Shdr const *const symhdr,
				Elf_Ehdr const *const ehdr)
{
	Elf_Sym const *const sym0 = (Elf_Sym const *)(_w(symhdr->sh_offset)
		+ (void *)ehdr);
	unsigned const nsym = _w(symhdr->sh_size) / _w(symhdr->sh_entsize);
	Elf_Sym const *symp;
	unsigned t;

for (symp = sym0, t = nsym; t; --t, ++symp) {
		unsigned int const st_bind = ELF_ST_BIND(symp->st_info);

if (txtndx == w2(symp->st_shndx)
			/* avoid STB_WEAK */
		    && (STB_LOCAL == st_bind || STB_GLOBAL == st_bind)) {
			/* function symbols on ARM have quirks, avoid them */
			if (w2(ehdr->e_machine) == EM_ARM
			    && ELF_ST_TYPE(symp->st_info) == STT_FUNC)
				continue;

*recvalp = _w(symp->st_value);
			return symp - sym0;
		}
	}
	fprintf(stderr, "Cannot find symbol for section %u: %s.\n",
		txtndx, txtname);
	fail_file();
}

/* Evade ISO C restriction: no declaration after statement in has_rel_mcount. */
static char const *
__has_rel_mcount(Elf_Shdr const *const relhdr,  /* is SHT_REL or SHT_RELA */
		 Elf_Shdr const *const shdr0,
		 char const *const shstrtab,
		 char const *const fname)
{
	/* .sh_info depends on .sh_type == SHT_REL[,A] */
	Elf_Shdr const *const txthdr = &shdr0[w(relhdr->sh_info)];
	char const *const txtname = &shstrtab[w(txthdr->sh_name)];

if (strcmp("__mcount_loc", txtname) == 0) {
		fprintf(stderr, "warning: __mcount_loc already exists: %s\n",
			fname);
		succeed_file();
	}
	if (w(txthdr->sh_type) != SHT_PROGBITS ||
	    !(_w(txthdr->sh_flags) & SHF_EXECINSTR))
		return NULL;
	return txtname;
}

static char const *has_rel_mcount(Elf_Shdr const *const relhdr,
				  Elf_Shdr const *const shdr0,
				  char const *const shstrtab,
				  char const *const fname)
{
	if (w(relhdr->sh_type) != SHT_REL && w(relhdr->sh_type) != SHT_RELA)
		return NULL;
	return __has_rel_mcount(relhdr, shdr0, shstrtab, fname);
}

static unsigned tot_relsize(Elf_Shdr const *const shdr0,
			    unsigned nhdr,
			    const char *const shstrtab,
			    const char *const fname)
{
	unsigned totrelsz = 0;
	Elf_Shdr const *shdrp = shdr0;
	char const *txtname;

for (; nhdr; --nhdr, ++shdrp) {
		txtname = has_rel_mcount(shdrp, shdr0, shstrtab, fname);
		if (txtname && is_mcounted_section_name(txtname))
			totrelsz += _w(shdrp->sh_size);
	}
	return totrelsz;
}

/* Overall supervision for Elf32 ET_REL file. */
static void
do_func(Elf_Ehdr *const ehdr, char const *const fname, unsigned const reltype)
{
	Elf_Shdr *const shdr0 = (Elf_Shdr *)(_w(ehdr->e_shoff)
		+ (void *)ehdr);
	unsigned const nhdr = w2(ehdr->e_shnum);
	Elf_Shdr *const shstr = &shdr0[w2(ehdr->e_shstrndx)];
	char const *const shstrtab = (char const *)(_w(shstr->sh_offset)
		+ (void *)ehdr);

Elf_Shdr const *relhdr;
	unsigned k;

/* Upper bound on space: assume all relevant relocs are for mcount. */
	unsigned const totrelsz = tot_relsize(shdr0, nhdr, shstrtab, fname);
	Elf_Rel *const mrel0 = umalloc(totrelsz);
	Elf_Rel *      mrelp = mrel0;

/* 2*sizeof(address) <= sizeof(Elf_Rel) */
	uint_t *const mloc0 = umalloc(totrelsz>>1);
	uint_t *      mlocp = mloc0;

unsigned rel_entsize = 0;
	unsigned symsec_sh_link = 0;

for (relhdr = shdr0, k = nhdr; k; --k, ++relhdr) {
		char const *const txtname = has_rel_mcount(relhdr, shdr0,
			shstrtab, fname);
		if (txtname && is_mcounted_section_name(txtname)) {
			uint_t recval = 0;
			unsigned const recsym = find_secsym_ndx(
				w(relhdr->sh_info), txtname, &recval,
				&shdr0[symsec_sh_link = w(relhdr->sh_link)],
				ehdr);

rel_entsize = _w(relhdr->sh_entsize);
			mlocp = sift_rel_mcount(mlocp,
				(void *)mlocp - (void *)mloc0, &mrelp,
				relhdr, ehdr, recsym, recval, reltype);
		} else if (txtname && (warn_on_notrace_sect || make_nop)) {
			/*
			 * This section is ignored by ftrace, but still
			 * has mcount calls. Convert them to nops now.
			 */
			nop_mcount(relhdr, ehdr, txtname);
		}
	}
	if (mloc0 != mlocp) {
		append_func(ehdr, shstr, mloc0, mlocp, mrel0, mrelp,
			    rel_entsize, symsec_sh_link);
	}
	free(mrel0);
	free(mloc0);
}

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