Support Loongarch.

* jmp.S (jmp_save, jmp_restore): Define for Loongarch.

* unwind.h (struct jmp): Likewise.

2 files changed, 81 insertions, 0 deletions

diff --git a/jmp.S b/jmp.S
index 9acee8a9..d426990f 100644
--- a/jmp.S
+++ b/jmp.S
@@ -486,6 +486,60 @@ DEFUN(jmp_restore)
   mv a0,    a1
   ret
 
+#elif __loongarch64
+
+DEFUN(jmp_save)
+  st.d  $ra, $a0, 0
+  st.d  $sp, $a0, 8
+  st.d  $fp, $a0, 16
+  st.d  $s0, $a0, 24
+  st.d  $s1, $a0, 32
+  st.d  $s2, $a0, 40
+  st.d  $s3, $a0, 48
+  st.d  $s4, $a0, 56
+  st.d  $s5, $a0, 64
+  st.d  $s6, $a0, 72
+  st.d  $s7, $a0, 80
+  st.d  $s8, $a0, 88
+#if 0 && !__loongarch64_soft_float
+  fst.d  $fs0, $a0, 96
+  fst.d  $fs1, $a0, 104
+  fst.d  $fs2, $a0, 112
+  fst.d  $fs3, $a0, 120
+  fst.d  $fs4, $a0, 128
+  fst.d  $fs5, $a0, 136
+  fst.d  $fs6, $a0, 144
+  fst.d  $fs7, $a0, 152
+#endif
+  xor $v0, $v0, $v0
+  jirl $zero, $ra, 0
+
+DEFUN(jmp_restore)
+  ld.d $ra, $a0, 0
+  ld.d $sp, $a0, 8
+  ld.d $fp, $a0, 16
+  ld.d $s0, $a0, 24
+  ld.d $s1, $a0, 32
+  ld.d $s2, $a0, 40
+  ld.d $s3, $a0, 48
+  ld.d $s4, $a0, 56
+  ld.d $s5, $a0, 64
+  ld.d $s6, $a0, 72
+  ld.d $s7, $a0, 80
+  ld.d $s8, $a0, 88
+#if 0 && !__loongarch64_soft_float
+  fld.d $fs0, $a0, 96
+  fld.d $fs1, $a0, 104
+  fld.d $fs2, $a0, 112
+  fld.d $fs3, $a0, 120
+  fld.d $fs4, $a0, 128
+  fld.d $fs5, $a0, 136
+  fld.d $fs6, $a0, 144
+  fld.d $fs7, $a0, 152
+#endif
+  add.d $v0, $a1, $zero
+  jirl  $zero, $ra, 0
+
 #else
 #error port me!
 #endif
diff --git a/unwind.h b/unwind.h
index ea9bd9a6..69a7e135 100644
--- a/unwind.h
+++ b/unwind.h
@@ -192,6 +192,33 @@ struct jmp {
 #endif
 };
 
+#elif __loongarch64
+
+struct jmp {
+  unsigned long ra;
+  unsigned long sp;
+  unsigned long fp;
+  unsigned long s0;
+  unsigned long s1;
+  unsigned long s2;
+  unsigned long s3;
+  unsigned long s4;
+  unsigned long s5;
+  unsigned long s6;
+  unsigned long s7;
+  unsigned long s8;
+#if 0 && !__loongarch64_soft_float
+  double fs0;
+  double fs1;
+  double fs2;
+  double fs3;
+  double fs4;
+  double fs5;
+  double fs6;
+  double fs7;
+#endif
+};
+
 #else
 #error port me!
 #endif