LoongArch: ABI Implementation

1 files changed, 58 insertions, 0 deletions

diff --git a/sysdeps/loongarch/bits/link.h b/sysdeps/loongarch/bits/link.h
new file mode 100644
index 0000000000..05c91575e9
--- /dev/null
+++ b/sysdeps/loongarch/bits/link.h
@@ -0,0 +1,58 @@
+/* Machine-specific declarations for dynamic linker interface.
+   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 _LINK_H
+#error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+typedef struct La_loongarch_regs
+{
+  unsigned long int lr_reg[8]; /* a0 - a7 */
+  double lr_fpreg[8];	       /* fa0 - fa7 */
+  unsigned long int lr_ra;
+  unsigned long int lr_sp;
+} La_loongarch_regs;
+
+/* Return values for calls from PLT on LoongArch.  */
+typedef struct La_loongarch_retval
+{
+  unsigned long int lrv_a0;
+  unsigned long int lrv_a1;
+  double lrv_fa0;
+  double lrv_fa1;
+} La_loongarch_retval;
+
+__BEGIN_DECLS
+
+extern ElfW (Addr) la_loongarch_gnu_pltenter (ElfW (Sym) *__sym,
+					      unsigned int __ndx,
+					      uintptr_t *__refcook,
+					      uintptr_t *__defcook,
+					      La_loongarch_regs *__regs,
+					      unsigned int *__flags,
+					      const char *__symname,
+					      long int *__framesizep);
+extern unsigned int la_loongarch_gnu_pltexit (ElfW (Sym) *__sym,
+					      unsigned int __ndx,
+					      uintptr_t *__refcook,
+					      uintptr_t *__defcook,
+					      const La_loongarch_regs *__inregs,
+					      La_loongarch_retval *__outregs,
+					      const char *__symname);
+
+__END_DECLS