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48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
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/* Machine-dependent details of interruptible RPC messaging. i386 version.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#define INTR_MSG_TRAP(msg, option, send_size, rcv_size, rcv_name, timeout, notify) \
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({ \
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error_t err; \
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asm (".globl _hurd_intr_rpc_msg_do_trap\n" \
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".globl _hurd_intr_rpc_msg_in_trap\n" \
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".globl _hurd_intr_rpc_msg_cx_sp\n" \
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".globl _hurd_intr_rpc_msg_sp_restored\n" \
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" movl %%esp, %%ecx\n" \
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" leal %1, %%esp\n" \
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"_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\n" \
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"_hurd_intr_rpc_msg_do_trap: lcall $7, $0 # status in %0\n" \
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"_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \
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"_hurd_intr_rpc_msg_sp_restored:" \
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: "=a" (err) : "m" ((&msg)[-1]) : "%ecx"); \
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err; \
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})
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static void inline
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INTR_MSG_BACK_OUT (struct i386_thread_state *state)
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{
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extern const void _hurd_intr_rpc_msg_cx_sp;
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if (state->eip >= (natural_t) &_hurd_intr_rpc_msg_cx_sp)
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state->uesp = state->ecx;
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else
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state->ecx = state->uesp;
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}
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