[GIT PULL] nolibc changes for v6.5

[Paul E. McKenney]

Hello, Linus,

Once the merge window opens, please pull the latest nolibc changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git tags/nolibc.2023.06.22a
  dd58d666ac08eb5eb81e4956172fc52b3bf0ab38: selftests/nolibc: make sure gcc always use little endian on MIPS (2023-06-09 11:46:10 -0700)

----------------------------------------------------------------
nolibc updates for v6.5

o	Add stackprotector support.

o	Fix RISC-V load-store instruction syntax to support 32-bit
	binaries, plus fixes for generic 32-bit support.

o	Fix use of s390 sys_fork().

o	Add my_syscall6() for ARM.

o	Support different platforms having different errno definitions.

o	Fix ppoll/ppoll_time64 arguments (add the fifth argument).

o	Force use of little endian on MIPS.

o	Improved testing, for example, better handling of different
	compilers and compiler versions, comparing nolibc behavior
	to that of libc, and additional test cases.

o	Improve syntax and header ordering.

o	Use existing <linux/reboot.h> instead of redefining constants.

o	Add syscall().

----------------------------------------------------------------
Mark Brown (1):
      tools/nolibc: Fix build of stdio.h due to header ordering

Thomas Weißschuh (33):
      tools/nolibc: tests: use volatile to force stack smashing
      tools/nolibc: add libc-test binary
      tools/nolibc: add wrapper for memfd_create
      tools/nolibc: implement fd-based FILE streams
      tools/nolibc: add testcases for vfprintf
      tools/nolibc: use standard __asm__ statements
      tools/nolibc: use __inline__ syntax
      tools/nolibc: use C89 comment syntax
      tools/nolibc: validate C89 compatibility
      tools/nolibc: s390: provide custom implementation for sys_fork
      tools/nolibc: add testcase for fork()/waitpid()
      tools/nolibc: remove LINUX_REBOOT_ constants
      tools/nolibc/unistd: add syscall()
      selftests/nolibc: reduce syscalls during space padding
      tools/nolibc: aarch64: add stackprotector support
      tools/nolibc: arm: add stackprotector support
      tools/nolibc: loongarch: add stackprotector support
      tools/nolibc: mips: add stackprotector support
      tools/nolibc: riscv: add stackprotector support
      tools/nolibc: fix typo pint -> point
      tools/nolibc: x86_64: disable stack protector for _start
      tools/nolibc: ensure stack protector guard is never zero
      tools/nolibc: add test for __stack_chk_guard initialization
      tools/nolibc: reformat list of headers to be installed
      tools/nolibc: add autodetection for stackprotector support
      tools/nolibc: simplify stackprotector compiler flags
      tools/nolibc: fix segfaults on compilers without attribute no_stack_protector
      tools/nolibc: s390: disable stackprotector in _start
      tools/nolibc: add support for prctl()
      selftests/nolibc: prevent coredumps during test execution
      tools/nolibc: support nanoseconds in stat()
      tools/nolibc: ensure fast64 integer types have 64 bits
      selftests/nolibc: remove test gettimeofday_null

Willy Tarreau (4):
      tools/nolibc: tests: fix build on non-c99 compliant compilers
      tools/nolibc: fix build of the test case using glibc
      selftests/nolibc: also count skipped and failed tests in output
      selftests/nolibc: make sure gcc always use little endian on MIPS

Zhangjin Wu (15):
      tools/nolibc: riscv: Fix up load/store instructions for rv32
      selftests/nolibc: syscall_args: use generic __NR_statx
      selftests/nolibc: print name instead of number for EOVERFLOW
      selftests/nolibc: remove the duplicated gettimeofday_bad2
      tools/nolibc: ppoll/ppoll_time64: add a missing argument
      selftests/nolibc: test_fork: fix up duplicated print
      selftests/nolibc: allow specify extra arguments for qemu
      selftests/nolibc: fix up compile warning with glibc on x86_64
      selftests/nolibc: not include limits.h for nolibc
      selftests/nolibc: use INT_MAX instead of __INT_MAX__
      tools/nolibc: arm: add missing my_syscall6
      tools/nolibc: open: fix up compile warning for arm
      selftests/nolibc: support two errnos with EXPECT_SYSER2()
      selftests/nolibc: remove gettimeofday_bad1/2 completely
      selftests/nolibc: add new gettimeofday test cases

 tools/include/nolibc/Makefile                |  19 ++-
 tools/include/nolibc/arch-aarch64.h          |  39 +++--
 tools/include/nolibc/arch-arm.h              |  74 ++++++---
 tools/include/nolibc/arch-i386.h             |  48 +++---
 tools/include/nolibc/arch-loongarch.h        |  49 +++---
 tools/include/nolibc/arch-mips.h             |  64 ++++----
 tools/include/nolibc/arch-riscv.h            |  51 +++---
 tools/include/nolibc/arch-s390.h             |  15 +-
 tools/include/nolibc/arch-x86_64.h           |  42 ++---
 tools/include/nolibc/arch.h                  |   2 +-
 tools/include/nolibc/compiler.h              |  25 +++
 tools/include/nolibc/nolibc.h                |   2 +-
 tools/include/nolibc/stackprotector.h        |  19 +--
 tools/include/nolibc/stdint.h                |  24 ++-
 tools/include/nolibc/stdio.h                 |  95 +++++++----
 tools/include/nolibc/stdlib.h                |  18 +--
 tools/include/nolibc/string.h                |   4 +-
 tools/include/nolibc/sys.h                   | 131 ++++++++++-----
 tools/include/nolibc/types.h                 |  14 +-
 tools/include/nolibc/unistd.h                |  15 ++
 tools/testing/selftests/nolibc/.gitignore    |   1 +
 tools/testing/selftests/nolibc/Makefile      |  35 ++--
 tools/testing/selftests/nolibc/nolibc-test.c | 231 ++++++++++++++++++++++-----
 23 files changed, 704 insertions(+), 313 deletions(-)
 create mode 100644 tools/include/nolibc/compiler.h