Commit ee60c510 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'nolibc-20260412-for-7.1-1' of... 

Merge tag 'nolibc-20260412-for-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc

Pull nolibc updates from Thomas Weißschuh:

 - Many new features and optimizations to printf()

 - Rename non-standard symbols to avoid collisions with application code

 - Support for byteswap.h, endian.h, err.h and asprintf()

 - 64-bit dev_t

 - Smaller cleanups and fixes to the code and build system

* tag 'nolibc-20260412-for-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (61 commits)
  selftests/nolibc: use gcc 15
  tools/nolibc: support UBSAN on gcc
  tools/nolibc: create __nolibc_no_sanitize_ubsan
  selftests/nolibc: don't skip tests for unimplemented syscalls anymore
  selftests/nolibc: explicitly handle ENOSYS from ptrace()
  tools/nolibc: add byteorder conversions
  tools/nolibc: add the _syscall() macro
  tools/nolibc: move the call to __sysret() into syscall()
  tools/nolibc: rename the internal macros used in syscall()
  selftests/nolibc: only use libgcc when really necessary
  selftests/nolibc: test the memory allocator
  tools/nolibc: check for overflow in calloc() without divisions
  tools/nolibc: add support for asprintf()
  tools/nolibc: use __builtin_offsetof()
  tools/nolibc: use makedev() in fstatat()
  tools/nolibc: handle all major and minor numbers in makedev() and friends
  tools/nolibc: make dev_t 64 bits wide
  tools/nolibc: move the logic of makedev() and friends into functions
  selftests/nolibc: add a test for stat().st_rdev
  selftests/nolibc: add some tests for makedev() and friends
  ...
parents 3203a08c b070dc36

tools/include/nolibc/Makefile

+5 −9
Original line number Diff line number Diff line
@@ -17,19 +17,17 @@ endif 
# it defaults to this nolibc directory.

OUTPUT ?= $(CURDIR)/



ifeq ($(V),1)

Q=

else

Q=@

endif



arch_files := arch.h $(wildcard arch-*.h)

architectures := arm arm64 loongarch m68k mips powerpc riscv s390 sh sparc x86

arch_files := arch.h $(addsuffix .h, $(addprefix arch-, $(architectures)))

all_files := \

		byteswap.h \

		compiler.h \

		crt.h \

		ctype.h \

		dirent.h \

		elf.h \

		endian.h \

		err.h \

		errno.h \

		fcntl.h \

		getopt.h \
@@ -96,12 +94,10 @@ help: 


# installs headers for all archs at once.

headers:

	$(Q)mkdir -p "$(OUTPUT)sysroot"

	$(Q)mkdir -p "$(OUTPUT)sysroot/include"

	$(Q)cp --parents $(arch_files) $(all_files) "$(OUTPUT)sysroot/include/"



headers_standalone: headers

	$(Q)$(MAKE) -C $(srctree) headers

	$(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot



CFLAGS_s390 := -m64

tools/include/nolibc/arch-arm.h

+7 −7
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ 


#endif /* end THUMB */



#define my_syscall0(num)                                                      \

#define __nolibc_syscall0(num)                                                \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0");                                   \
@@ -67,7 +67,7 @@ 
	_arg1;                                                                \

})



#define my_syscall1(num, arg1)                                                \

#define __nolibc_syscall1(num, arg1)                                          \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \
@@ -84,7 +84,7 @@ 
	_arg1;                                                                \

})



#define my_syscall2(num, arg1, arg2)                                          \

#define __nolibc_syscall2(num, arg1, arg2)                                    \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \
@@ -102,7 +102,7 @@ 
	_arg1;                                                                \

})



#define my_syscall3(num, arg1, arg2, arg3)                                    \

#define __nolibc_syscall3(num, arg1, arg2, arg3)                              \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \
@@ -121,7 +121,7 @@ 
	_arg1;                                                                \

})



#define my_syscall4(num, arg1, arg2, arg3, arg4)                              \

#define __nolibc_syscall4(num, arg1, arg2, arg3, arg4)                        \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \
@@ -141,7 +141,7 @@ 
	_arg1;                                                                \

})



#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5)                        \

#define __nolibc_syscall5(num, arg1, arg2, arg3, arg4, arg5)                  \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \
@@ -162,7 +162,7 @@ 
	_arg1;                                                                \

})



#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)                  \

#define __nolibc_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)            \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \

tools/include/nolibc/arch-arm64.h

+7 −7
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ 
 *     don't have to experience issues with register constraints.

 */



#define my_syscall0(num)                                                      \

#define __nolibc_syscall0(num)                                                \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0");                                   \
@@ -36,7 +36,7 @@ 
	_arg1;                                                                \

})



#define my_syscall1(num, arg1)                                                \

#define __nolibc_syscall1(num, arg1)                                          \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \
@@ -51,7 +51,7 @@ 
	_arg1;                                                                \

})



#define my_syscall2(num, arg1, arg2)                                          \

#define __nolibc_syscall2(num, arg1, arg2)                                    \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \
@@ -67,7 +67,7 @@ 
	_arg1;                                                                \

})



#define my_syscall3(num, arg1, arg2, arg3)                                    \

#define __nolibc_syscall3(num, arg1, arg2, arg3)                              \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \
@@ -84,7 +84,7 @@ 
	_arg1;                                                                \

})



#define my_syscall4(num, arg1, arg2, arg3, arg4)                              \

#define __nolibc_syscall4(num, arg1, arg2, arg3, arg4)                        \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \
@@ -102,7 +102,7 @@ 
	_arg1;                                                                \

})



#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5)                        \

#define __nolibc_syscall5(num, arg1, arg2, arg3, arg4, arg5)                  \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \
@@ -121,7 +121,7 @@ 
	_arg1;                                                                \

})



#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)                  \

#define __nolibc_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)            \

({                                                                            \

	register long _num  __asm__ ("x8") = (num);                           \

	register long _arg1 __asm__ ("x0") = (long)(arg1);                    \

tools/include/nolibc/arch-loongarch.h

+7 −7
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ 
#define _NOLIBC_SYSCALL_CLOBBERLIST \

	"memory", "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8"



#define my_syscall0(num)                                                      \

#define __nolibc_syscall0(num)                                                \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0");                                   \
@@ -38,7 +38,7 @@ 
	_arg1;                                                                \

})



#define my_syscall1(num, arg1)                                                \

#define __nolibc_syscall1(num, arg1)                                          \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);		      \
@@ -52,7 +52,7 @@ 
	_arg1;                                                                \

})



#define my_syscall2(num, arg1, arg2)                                          \

#define __nolibc_syscall2(num, arg1, arg2)                                    \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);                    \
@@ -68,7 +68,7 @@ 
	_arg1;                                                                \

})



#define my_syscall3(num, arg1, arg2, arg3)                                    \

#define __nolibc_syscall3(num, arg1, arg2, arg3)                              \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);                    \
@@ -85,7 +85,7 @@ 
	_arg1;                                                                \

})



#define my_syscall4(num, arg1, arg2, arg3, arg4)                              \

#define __nolibc_syscall4(num, arg1, arg2, arg3, arg4)                        \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);                    \
@@ -103,7 +103,7 @@ 
	_arg1;                                                                \

})



#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5)                        \

#define __nolibc_syscall5(num, arg1, arg2, arg3, arg4, arg5)                  \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);                    \
@@ -122,7 +122,7 @@ 
	_arg1;                                                                \

})



#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)                  \

#define __nolibc_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)            \

({                                                                            \

	register long _num  __asm__ ("a7") = (num);                           \

	register long _arg1 __asm__ ("a0") = (long)(arg1);                    \

tools/include/nolibc/arch-m68k.h

+7 −7
Original line number Diff line number Diff line
@@ -15,7 +15,7 @@ 


#define _NOLIBC_SYSCALL_CLOBBERLIST "memory"



#define my_syscall0(num)                                                      \

#define __nolibc_syscall0(num)                                                \

({                                                                            \

	register long _num __asm__ ("d0") = (num);                            \

									      \
@@ -28,7 +28,7 @@ 
	_num;                                                                 \

})



#define my_syscall1(num, arg1)                                                \

#define __nolibc_syscall1(num, arg1)                                          \

({                                                                            \

	register long _num __asm__ ("d0") = (num);                            \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \
@@ -42,7 +42,7 @@ 
	_num;                                                                 \

})



#define my_syscall2(num, arg1, arg2)                                          \

#define __nolibc_syscall2(num, arg1, arg2)                                    \

({                                                                            \

	register long _num __asm__ ("d0") = (num);                            \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \
@@ -57,7 +57,7 @@ 
	_num;                                                                 \

})



#define my_syscall3(num, arg1, arg2, arg3)                                    \

#define __nolibc_syscall3(num, arg1, arg2, arg3)                              \

({                                                                            \

	register long _num __asm__ ("d0")  = (num);                           \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \
@@ -73,7 +73,7 @@ 
	_num;                                                                 \

})



#define my_syscall4(num, arg1, arg2, arg3, arg4)                              \

#define __nolibc_syscall4(num, arg1, arg2, arg3, arg4)                        \

({                                                                            \

	register long _num __asm__ ("d0") = (num);                            \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \
@@ -90,7 +90,7 @@ 
	_num;                                                                 \

})



#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5)                        \

#define __nolibc_syscall5(num, arg1, arg2, arg3, arg4, arg5)                  \

({                                                                            \

	register long _num __asm__ ("d0") = (num);                            \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \
@@ -108,7 +108,7 @@ 
	_num;                                                                 \

})



#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)                  \

#define __nolibc_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)            \

({                                                                            \

	register long _num __asm__ ("d0")  = (num);                           \

	register long _arg1 __asm__ ("d1") = (long)(arg1);                    \