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- /* Copyright (C) 1992 Free Software Foundation, Inc.
- 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 Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <setjmp.h>
-
- #ifndef __GNUC__
- #error This file uses GNU C extensions; you must compile with GCC.
- #endif
-
- /* This function is only called via the assembly language routine
- __setjmp, 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
- DEFUN(__setjmp_aux, (env, sp, fp), __jmp_buf env AND int sp AND int fp)
- {
- /* Store the floating point callee-saved registers... */
- asm volatile ("s.d $f20, %0" : : "m" (env[0].__fpregs[0]));
- asm volatile ("s.d $f22, %0" : : "m" (env[0].__fpregs[1]));
- asm volatile ("s.d $f24, %0" : : "m" (env[0].__fpregs[2]));
- asm volatile ("s.d $f26, %0" : : "m" (env[0].__fpregs[3]));
- asm volatile ("s.d $f28, %0" : : "m" (env[0].__fpregs[4]));
- asm volatile ("s.d $f30, %0" : : "m" (env[0].__fpregs[5]));
-
- /* .. and the PC; */
- asm volatile ("sw $31, %0" : : "m" (env[0].__pc));
-
- /* .. and the stack pointer; */
- asm volatile ("sw %1, %0" : : "m" (env[0].__sp), "r" (sp));
-
- /* .. and the FP; it'll be in s8. */
- asm volatile ("sw %1, %0" : : "m" (env[0].__fp), "r" (fp));
-
- /* .. and the GP; */
- asm volatile ("sw $gp, %0" : : "m" (env[0].__gp));
-
- /* .. and the callee-saved registers; */
- asm volatile ("sw $16, %0" : : "m" (env[0].__regs[0]));
- asm volatile ("sw $17, %0" : : "m" (env[0].__regs[1]));
- asm volatile ("sw $18, %0" : : "m" (env[0].__regs[2]));
- asm volatile ("sw $19, %0" : : "m" (env[0].__regs[3]));
- asm volatile ("sw $20, %0" : : "m" (env[0].__regs[4]));
- asm volatile ("sw $21, %0" : : "m" (env[0].__regs[5]));
- asm volatile ("sw $22, %0" : : "m" (env[0].__regs[6]));
- asm volatile ("sw $23, %0" : : "m" (env[0].__regs[7]));
-
- /* .. and finally get and reconstruct the floating point csr. */
- asm volatile ("cfc1 $2, $31");
- asm volatile ("sw $2, %0" : : "m" (env[0].__fpc_csr));
-
- return 0;
- }
-