Several mips cleanups/additons from Geoffrey Espin.

1 files changed, 65 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/mips/setjmp_aux.c b/libc/sysdeps/linux/mips/setjmp_aux.c
new file mode 100644
index 000000000..1cd2b2155
--- /dev/null
+++ b/libc/sysdeps/linux/mips/setjmp_aux.c
@@ -0,0 +1,65 @@
+/* Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Brendan Kehoe (brendan@zen.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 <setjmp.h>
+
+/* This function is only called via the assembly language routine
+   __sigsetjmp, which arranges to pass in the stack pointer and the frame
+   pointer.  We do things this way because it's difficult to reliably
+   access them in C.  */
+
+int
+__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
+{
+  /* Store the floating point callee-saved registers...  */
+  asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
+  asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
+  asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2]));
+  asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
+  asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
+  asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
+
+  /* .. and the PC;  */
+  asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));
+
+  /* .. and the stack pointer;  */
+  env[0].__jmpbuf[0].__sp = (void *) sp;
+
+  /* .. and the FP; it'll be in s8. */
+  env[0].__jmpbuf[0].__fp = (void *) fp;
+
+  /* .. and the GP; */
+  asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp));
+
+  /* .. and the callee-saved registers; */
+  asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0]));
+  asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1]));
+  asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2]));
+  asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3]));
+  asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4]));
+  asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5]));
+  asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
+  asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
+
+  /* .. and finally get and reconstruct the floating point csr.  */
+  asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr));
+
+  /* Save the signal mask if requested.  */
+  return __sigjmp_save (env, savemask);
+}