LoongArch: Linux ABI

2 files changed, 103 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/loongarch/sys/ucontext.h b/sysdeps/unix/sysv/linux/loongarch/sys/ucontext.h
new file mode 100644
index 0000000000..e334a45a44
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/sys/ucontext.h
@@ -0,0 +1,61 @@
+/* struct ucontext definition.
+   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/>.  */
+
+/* Don't rely on this, the interface is currently messed up and may need to
+   be broken to be fixed.  */
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+
+#include <bits/types/sigset_t.h>
+#include <bits/types/stack_t.h>
+
+#ifdef __USE_MISC
+#define LARCH_NGREG 32
+
+#define LARCH_REG_RA 1
+#define LARCH_REG_SP 3
+#define LARCH_REG_S0 23
+#define LARCH_REG_S1 24
+#define LARCH_REG_A0 4
+#define LARCH_REG_S2 25
+#define LARCH_REG_NARGS 8
+
+#endif
+
+typedef struct mcontext_t
+{
+  unsigned long long __pc;
+  unsigned long long __gregs[32];
+  unsigned int __flags;
+  unsigned long long __extcontext[0] __attribute__((__aligned__(16)));
+} mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+{
+  unsigned long int __uc_flags;
+  struct ucontext_t *uc_link;
+  stack_t uc_stack;
+  sigset_t uc_sigmask;
+  mcontext_t uc_mcontext;
+} ucontext_t;
+
+#endif /* sys/ucontext.h */
diff --git a/sysdeps/unix/sysv/linux/loongarch/sys/user.h b/sysdeps/unix/sysv/linux/loongarch/sys/user.h
new file mode 100644
index 0000000000..55181de816
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/sys/user.h
@@ -0,0 +1,42 @@
+/* struct user_regs_struct definition for LoongArch.
+   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_USER_H
+#define _SYS_USER_H 1
+
+#include <stdint.h>
+
+struct user_regs_struct
+{
+  /* Saved main processor registers. */
+  uint64_t regs[32];
+
+  /* Saved special registers. */
+  uint64_t orig_a0;
+  uint64_t csr_era;
+  uint64_t csr_badv;
+  uint64_t reserved[10];
+};
+
+struct user_fp_struct {
+  uint64_t    fpr[32];
+  uint64_t    fcc;
+  uint32_t    fcsr;
+};
+
+#endif /* _SYS_USER_H */