diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/mips/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/mips/setjmp_aux.c | 65 | ||||
| -rw-r--r-- | libc/sysdeps/linux/mips/vfork.c | 31 |
3 files changed, 97 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/mips/Makefile b/libc/sysdeps/linux/mips/Makefile index b0bc87297..4875f334f 100644 --- a/libc/sysdeps/linux/mips/Makefile +++ b/libc/sysdeps/linux/mips/Makefile @@ -33,7 +33,7 @@ CRT0_OBJ=$(patsubst %.S,%.o, $(CRT0)) SSRC=bsd-_setjmp.S bsd-setjmp.S setjmp.S #fork.S clone.S SOBJS=$(patsubst %.S,%.o, $(SSRC)) -CSRC=__longjmp.c brk.c +CSRC=__longjmp.c brk.c vfork.c setjmp_aux.c COBJS=$(patsubst %.c,%.o, $(CSRC)) OBJS=$(SOBJS) $(MOBJ) $(COBJS) 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); +} diff --git a/libc/sysdeps/linux/mips/vfork.c b/libc/sysdeps/linux/mips/vfork.c new file mode 100644 index 000000000..75c625214 --- /dev/null +++ b/libc/sysdeps/linux/mips/vfork.c @@ -0,0 +1,31 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +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 <errno.h> +#include <unistd.h> + +/* If we don't have vfork, fork is close enough. */ + +__pid_t +__vfork __P ((void)) +{ + return fork (); +} + +weak_alias (__vfork, vfork) |