Revert "nds32: sync with binutils 2.37, gcc 11.2 and linux 5.10.93 changes"

This reverts commit 6b6f51c21dd29685bd1339de0bdffc0929316c63.

5 files changed, 150 insertions, 12 deletions

diff --git a/libc/sysdeps/linux/nds32/Makefile.arch b/libc/sysdeps/linux/nds32/Makefile.arch
index c7627b847..caf163844 100644
--- a/libc/sysdeps/linux/nds32/Makefile.arch
+++ b/libc/sysdeps/linux/nds32/Makefile.arch
@@ -2,6 +2,6 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
 CSRC-y := brk.c prctl.c mremap.c
-SSRC-y := setjmp.S __longjmp.S bsd-setjmp.S bsd-_setjmp.S clone.S sysdep.S
+SSRC-y := setjmp.S __longjmp.S bsd-setjmp.S bsd-_setjmp.S clone.S vfork.S sysdep.S
 CSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.c swapcontext.c
 SSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += getcontext.S setcontext.S
diff --git a/libc/sysdeps/linux/nds32/bits/kernel_types.h b/libc/sysdeps/linux/nds32/bits/kernel_types.h
index 6b142d2e5..1b6ae4d1b 100644
--- a/libc/sysdeps/linux/nds32/bits/kernel_types.h
+++ b/libc/sysdeps/linux/nds32/bits/kernel_types.h
@@ -14,13 +14,13 @@
 
 typedef unsigned short		__kernel_dev_t;
 typedef unsigned long		__kernel_ino_t;
-typedef unsigned int		__kernel_mode_t;
+typedef unsigned short		__kernel_mode_t;
 typedef unsigned short		__kernel_nlink_t;
 typedef long			__kernel_off_t;
 typedef int			__kernel_pid_t;
-typedef int 			__kernel_ipc_pid_t;
-typedef unsigned int		__kernel_uid_t;
-typedef unsigned int		__kernel_gid_t;
+typedef unsigned short		__kernel_ipc_pid_t;
+typedef unsigned short		__kernel_uid_t;
+typedef unsigned short		__kernel_gid_t;
 typedef unsigned int		__kernel_size_t;
 typedef int			__kernel_ssize_t;
 typedef int			__kernel_ptrdiff_t;
@@ -34,11 +34,19 @@ typedef unsigned short		__kernel_gid16_t;
 typedef unsigned int		__kernel_uid32_t;
 typedef unsigned int		__kernel_gid32_t;
 
-typedef __kernel_uid_t 		__kernel_old_uid_t;
-typedef __kernel_gid_t 		__kernel_old_gid_t;
-typedef unsigned int		__kernel_old_dev_t;
+typedef unsigned short		__kernel_old_uid_t;
+typedef unsigned short		__kernel_old_gid_t;
+typedef __kernel_dev_t		__kernel_old_dev_t;
 typedef long			__kernel_long_t;
 typedef unsigned long		__kernel_ulong_t;
 __extension__ typedef long long	__kernel_loff_t;
 
+typedef struct {
+#ifdef __USE_ALL
+	int val[2];
+#else
+	int __val[2];
+#endif
+} __kernel_fsid_t;
+
 #endif /* __ARCH_NDS32_POSIX_TYPES_H */
diff --git a/libc/sysdeps/linux/nds32/bits/syscalls.h b/libc/sysdeps/linux/nds32/bits/syscalls.h
index 50e30db7d..a5cdda18a 100644
--- a/libc/sysdeps/linux/nds32/bits/syscalls.h
+++ b/libc/sysdeps/linux/nds32/bits/syscalls.h
@@ -37,7 +37,8 @@
 #define Y(x) X(x)
 #define        LIB_SYSCALL    __NR_syscall
 
-#define __issue_syscall(syscall_name) "syscall  0x0;\n"
+#define __issue_syscall(syscall_name)                   		\
+"       syscall  "  Y(syscall_name) ";	\n"
 
 #undef INTERNAL_SYSCALL_ERROR_P
 #define INTERNAL_SYSCALL_ERROR_P(val, err) ((unsigned int) (val) >= 0xfffff001u)
diff --git a/libc/sysdeps/linux/nds32/sys/ucontext.h b/libc/sysdeps/linux/nds32/sys/ucontext.h
index ea86a3ad0..0d7422aab 100644
--- a/libc/sysdeps/linux/nds32/sys/ucontext.h
+++ b/libc/sysdeps/linux/nds32/sys/ucontext.h
@@ -36,10 +36,10 @@ typedef struct sigcontext mcontext_t;
 
 
 /* Userlevel context.  */
-typedef struct ucontext_t
+typedef struct ucontext
   {
-    unsigned long int __uc_flags;
-    struct ucontext_t *uc_link;
+    unsigned long int uc_flags;
+    struct ucontext *uc_link;
     stack_t uc_stack;
     mcontext_t uc_mcontext;
     __sigset_t uc_sigmask;
diff --git a/libc/sysdeps/linux/nds32/vfork.S b/libc/sysdeps/linux/nds32/vfork.S
new file mode 100644
index 000000000..ab32135fc
--- /dev/null
+++ b/libc/sysdeps/linux/nds32/vfork.S
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2016-2017 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
+   Contributed by Philip Blundell <philb@gnu.org>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H    1
+#include <bits/errno.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+#ifdef PIC
+.pic
+#endif
+
+#ifdef __NR_vfork
+    syscall __NR_vfork
+    bltz $r0, 2f
+1:
+    ret
+2:
+    sltsi $r1, $r0, -4096
+    bnez $r1, 1b;
+
+# ifdef __ASSUME_VFORK_SYSCALL
+#  ifdef PIC
+	pushm	$gp,	$lp
+	cfi_adjust_cfa_offset(8)
+	cfi_rel_offset(gp, 0)
+	cfi_rel_offset(lp, 4)
+	mfusr 	$r15, 	$PC
+	sethi	$gp,	hi20(_GLOBAL_OFFSET_TABLE_+4)
+	ori	$gp,	$gp,	lo12(_GLOBAL_OFFSET_TABLE_+8)
+	add	$gp,	$gp,	$r15
+
+	! r15=C_SYMBOL_NAME(__syscall_error)@PLT
+	sethi	$r15, 	hi20(C_SYMBOL_NAME(__syscall_error)@PLT)
+	ori	$r15,	$r15, lo12(C_SYMBOL_NAME(__syscall_error)@PLT)
+	add	$r15, 	$r15, 	$gp
+
+	! jump to SYSCALL_ERROR
+	jral		$r15
+	popm	$gp,	$lp
+	cfi_adjust_cfa_offset(-8)
+	cfi_restore(lp)
+	cfi_restore(gp)
+	ret
+#  else
+	j C_SYMBOL_NAME(__syscall_error)
+#  endif
+# else
+    /* Check if vfork syscall is known at all. */
+	li $r1, -ENOSYS
+	beq	$r0, $r1, 1f
+
+# ifdef PIC
+3:
+	pushm	$gp,	$lp
+	cfi_adjust_cfa_offset(8)
+	cfi_rel_offset(gp, 0)
+	cfi_rel_offset(lp, 4)
+	mfusr	$r15,   $PC
+	sethi   $gp,    hi20(_GLOBAL_OFFSET_TABLE_+4)
+	ori     $gp,    $gp,    lo12(_GLOBAL_OFFSET_TABLE_+8)
+	add     $gp,    $gp,    $r15
+
+	! r15=C_SYMBOL_NAME(__syscall_error)@PLT
+	sethi	$r15,	hi20(C_SYMBOL_NAME(__syscall_error)@PLT)
+	ori     $r15,	$r15, lo12(C_SYMBOL_NAME(__syscall_error)@PLT)
+	add     $r15,	$r15, 	$gp
+
+	! jump to SYSCALL_ERROR
+	jral		$r15
+	popm	$gp,	$lp
+	cfi_adjust_cfa_offset(-8)
+	cfi_restore(lp)
+	cfi_restore(gp)
+	ret
+# else
+        j C_SYMBOL_NAME(__syscall_error)
+# endif
+1:
+# endif
+#endif
+
+#ifndef __ASSUME_VFORK_SYSCALL
+    /* If we don't have vfork, fork is close enough. */
+	syscall __NR_fork
+	bgez $r0, 1f
+	sltsi $r1, $r0, -4096
+	bnez	$r1, 1f
+
+# ifdef PIC
+        b       3b
+# else
+        j C_SYMBOL_NAME(__syscall_error)
+# endif
+1:
+    ret
+
+#elif !defined __NR_vfork
+# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"
+#endif
+
+PSEUDO_END (__vfork)
+weak_alias (__vfork, vfork)
+libc_hidden_def (vfork)