33def8498f
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Conversion done using the script at:
https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
|
|
* Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
*/
|
|
|
|
#include <signal.h>
|
|
#include <sched.h>
|
|
#include <asm/unistd.h>
|
|
#include <sys/time.h>
|
|
#include <as-layout.h>
|
|
#include <ptrace_user.h>
|
|
#include <stub-data.h>
|
|
#include <sysdep/stub.h>
|
|
|
|
/*
|
|
* This is in a separate file because it needs to be compiled with any
|
|
* extraneous gcc flags (-pg, -fprofile-arcs, -ftest-coverage) disabled
|
|
*
|
|
* Use UM_KERN_PAGE_SIZE instead of PAGE_SIZE because that calls getpagesize
|
|
* on some systems.
|
|
*/
|
|
|
|
void __section(".__syscall_stub")
|
|
stub_clone_handler(void)
|
|
{
|
|
struct stub_data *data = (struct stub_data *) STUB_DATA;
|
|
long err;
|
|
|
|
err = stub_syscall2(__NR_clone, CLONE_PARENT | CLONE_FILES | SIGCHLD,
|
|
STUB_DATA + UM_KERN_PAGE_SIZE / 2 - sizeof(void *));
|
|
if (err != 0)
|
|
goto out;
|
|
|
|
err = stub_syscall4(__NR_ptrace, PTRACE_TRACEME, 0, 0, 0);
|
|
if (err)
|
|
goto out;
|
|
|
|
remap_stack(data->fd, data->offset);
|
|
goto done;
|
|
|
|
out:
|
|
/*
|
|
* save current result.
|
|
* Parent: pid;
|
|
* child: retcode of mmap already saved and it jumps around this
|
|
* assignment
|
|
*/
|
|
data->err = err;
|
|
done:
|
|
trap_myself();
|
|
}
|