mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-20 12:00:06 +00:00
65 lines
2.8 KiB
C
65 lines
2.8 KiB
C
/* Copyright (C) 1992, 1994, 1995 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 <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 = sp;
|
|
|
|
/* .. and the FP; it'll be in s8. */
|
|
env[0].__jmpbuf[0].__fp = 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);
|
|
}
|