4 files changed, 165 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/fcntl.h b/sysdeps/unix/sysv/linux/loongarch/bits/fcntl.h
new file mode 100644
index 0000000000..bf1e254234
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/bits/fcntl.h
@@ -0,0 +1,61 @@
+/* O_*, F_*, FD_* bit values for the generic Linux/LoongArch ABI.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _FCNTL_H
+#error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+/* In 64-bit ISA files are always with 64bit off_t and F_*LK64 are the same as
+   non-64-bit versions.  It will need to be revised for 128-bit.  */
+#if __WORDSIZE == 64
+#define __O_LARGEFILE 0
+
+#define F_GETLK64 5  /* Get record locking info.  */
+#define F_SETLK64 6  /* Set record locking info (non-blocking).  */
+#define F_SETLKW64 7 /* Set record locking info (blocking).  */
+#endif
+
+struct flock
+{
+  short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+  short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+#ifndef __USE_FILE_OFFSET64
+  __off_t l_start; /* Offset where the lock begins.  */
+  __off_t l_len;   /* Size of the locked area; zero means until EOF.  */
+#else
+  __off64_t l_start; /* Offset where the lock begins.  */
+  __off64_t l_len;   /* Size of the locked area; zero means until EOF.  */
+#endif
+  __pid_t l_pid; /* Process holding the lock.  */
+};
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+{
+  short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+  short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+  __off64_t l_start;  /* Offset where the lock begins.  */
+  __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
+  __pid_t l_pid;      /* Process holding the lock.  */
+};
+#endif
+
+/* Include generic Linux declarations.  */
+#include <bits/fcntl-linux.h>
diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/procfs.h b/sysdeps/unix/sysv/linux/loongarch/bits/procfs.h
new file mode 100644
index 0000000000..2db777b38c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/bits/procfs.h
@@ -0,0 +1,52 @@
+/* Types for registers for sys/procfs.h.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PROCFS_H
+# error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead."
+#endif
+
+/* Type for a general-purpose register.  */
+typedef __uint64_t elf_greg_t;
+
+/* And the whole bunch of them.  We could have used `struct
+   pt_regs' directly in the typedef, but tradition says that
+   the register set is an array, which does have some peculiar
+   semantics, so leave it that way.  */
+#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof (elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define ELF_NFPREG 34 /* 32 FPRs + 8-byte byte-vec for fcc + 4-byte FCR */
+typedef union
+{
+  double d;
+  float f;
+} elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+typedef union
+{
+  double d[2];
+  float f[4];
+} __attribute__ ((__aligned__ (16))) elf_lsxregset_t[32];
+
+typedef union
+{
+  double d[4];
+  float f[8];
+} __attribute__ ((__aligned__ (32))) elf_lasxregset_t[32];
diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/loongarch/bits/pthread_stack_min.h
new file mode 100644
index 0000000000..072c2ade42
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/bits/pthread_stack_min.h
@@ -0,0 +1,20 @@
+/* Definition of PTHREAD_STACK_MIN.  LoongArch Linux version.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Minimum size for a thread.  At least two pages with 64k pages.  */
+#define PTHREAD_STACK_MIN	131072
diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/sigstack.h b/sysdeps/unix/sysv/linux/loongarch/bits/sigstack.h
new file mode 100644
index 0000000000..238c1a98e6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/bits/sigstack.h
@@ -0,0 +1,32 @@
+/* sigstack, sigaltstack definitions.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_SIGSTACK_H
+#define _BITS_SIGSTACK_H 1
+
+#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
+# error "Never include this file directly.  Use <signal.h> instead"
+#endif
+
+/* Minimum stack size for a signal handler.  */
+#define MINSIGSTKSZ	4096
+
+/* System default stack size.  */
+#define SIGSTKSZ	16384
+
+#endif /* bits/sigstack.h */