diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S b/sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S deleted file mode 100644 index 1a5f2de823..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S +++ /dev/null @@ -1,118 +0,0 @@ -/* Install given context. - Copyright (C) 2008-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by David S. Miller <davem@davemloft.net>, 2008. - - 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, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <sys/trap.h> - -#include "ucontext_i.h" - - -/* int __setcontext (const ucontext_t *ucp) - - Restores the machine context in UCP and thereby resumes execution - in that context. - - This implementation is intended to be used for *synchronous* context - switches only. Therefore, it does not have to restore anything - other than the PRESERVED state. */ - -ENTRY(__setcontext) - save %sp, -112, %sp - - mov SIG_SETMASK, %o0 - add %i0, UC_SIGMASK, %o1 - clr %o2 - mov 8, %o3 - mov __NR_rt_sigprocmask, %g1 - ta 0x10 - - /* This is a bit on the expensive side, and we could optimize - the unwind similar to how the 32-bit sparc longjmp code - does if performance of this routine really matters. */ - ta ST_FLUSH_WINDOWS - - ldub [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_EN], %g1 - cmp %g1, 0 - be 1f - nop - ld [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_FSR], %fsr - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D0], %f0 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D2], %f2 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D4], %f4 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D6], %f6 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D8], %f8 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D10], %f10 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D12], %f12 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D14], %f14 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D16], %f16 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D18], %f18 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D20], %f20 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D22], %f22 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D24], %f24 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D26], %f26 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D28], %f28 - ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D30], %f30 -1: - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_Y], %g1 - wr %g1, 0x0, %y - - /* We specifically do not restore %g1 since we need it here as - a temporary. */ - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G2], %g2 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G3], %g3 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G4], %g4 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G5], %g5 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G6], %g6 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G7], %g7 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O1], %i1 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O2], %i2 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O3], %i3 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O4], %i4 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O5], %i5 - ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O6], %i6 - restore - ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O7], %o7 - ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_PC], %g1 - jmpl %g1, %g0 - ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O0], %o0 -END(__setcontext) - -weak_alias (__setcontext, setcontext) - -/* This is the helper code which gets called if a function which is - registered with 'makecontext' returns. In this case we have to - install the context listed in the uc_link element of the context - 'makecontext' manipulated at the time of the 'makecontext' call. - If the pointer is NULL the process must terminate. */ - -ENTRY(__start_context) - ld [%sp + (16 * 4)], %g1 - cmp %g1, 0 - be,a 1f - clr %o0 - call __setcontext - mov %g1, %o0 - /* If this returns (which can happen if the syscall fails) we'll - exit the program with the return error value (-1). */ -1: call HIDDEN_JUMPTARGET(exit) - nop - /* The 'exit' call should never return. In case it does cause - the process to terminate. */ - unimp -END(__start_context) |