diff options
Diffstat (limited to 'sysdeps/mach/hurd/i386/intr-msg.h')
| -rw-r--r-- | sysdeps/mach/hurd/i386/intr-msg.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/i386/intr-msg.h b/sysdeps/mach/hurd/i386/intr-msg.h new file mode 100644 index 0000000000..353a6d2acd --- /dev/null +++ b/sysdeps/mach/hurd/i386/intr-msg.h @@ -0,0 +1,47 @@ +/* Machine-dependent details of interruptible RPC messaging. i386 version. +Copyright (C) 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. */ + + +#define INTR_MSG_TRAP(msg, option, send_size, rcv_size, rcv_name, timeout, notify) \ +({ \ + error_t err; \ + asm (".globl _hurd_intr_rpc_msg_do_trap\n" \ + ".globl _hurd_intr_rpc_msg_in_trap\n" \ + ".globl _hurd_intr_rpc_msg_cx_sp\n" \ + ".globl _hurd_intr_rpc_msg_sp_restored\n" \ + " movl %%esp, %%ecx\n" \ + " leal %1, %%esp\n" \ + "_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\n" \ + "_hurd_intr_rpc_msg_do_trap: lcall $7, $0 # status in %0\n" \ + "_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \ + "_hurd_intr_rpc_msg_sp_restored:" \ + : "=a" (err) : "m" ((&msg)[-1]) : "%ecx"); \ + err; \ +}) + + +static void inline +INTR_MSG_BACK_OUT (struct i386_thread_state *state) +{ + extern const void _hurd_intr_rpc_msg_cx_sp; + if (state->eip >= (natural_t) &_hurd_intr_rpc_msg_cx_sp) + state->uesp = state->ecx; + else + state->ecx = state->uesp; +} |