/* 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 <features.h> #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. */ extern int __sigjmp_save (sigjmp_buf, int); int __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp) { #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ /* 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])); #endif /* .. 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])); #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ /* .. and finally get and reconstruct the floating point csr. */ asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr)); #endif /* Save the signal mask if requested. */ return __sigjmp_save (env, savemask); }