128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/* Machine-dependent details of interruptible RPC messaging. Mips version.
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Copyright (C) 1996, 1997 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 not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifdef __mips64
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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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mach_port_t __rcv_name = (rcv_name); \
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mach_msg_timeout_t __timeout = (timeout); \
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mach_port_t __notify = (notify); \
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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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" move $4, %1\n" \
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" move $5, %2\n" \
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" move $6, %3\n" \
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" move $7, %4\n" \
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" move $8, %5\n" \
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" move $9, %6\n" \
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" move $10, %7\n" \
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" dli $2, -25\n" \
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"_hurd_intr_rpc_msg_do_trap: syscall\n" \
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"_hurd_intr_rpc_msg_in_trap: move %0, $2\n" \
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: "=r" (err) \
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: "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \
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"r" (__rcv_name), "r" (__timeout), "r" (__notify) \
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: "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", "$10", \
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"$11", "$12", "$13", "$14", "$15", "$24", "$25", "$28"); \
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err; \
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})
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#else
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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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mach_port_t __rcv_name = (rcv_name); \
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mach_msg_timeout_t __timeout = (timeout); \
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mach_port_t __notify = (notify); \
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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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" move $4, %1\n" \
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" move $5, %2\n" \
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" move $6, %3\n" \
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" move $7, %4\n" \
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" move $8, %5\n" \
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" move $9, %6\n" \
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" move $10, %7\n" \
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" li $2, -25\n" \
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"_hurd_intr_rpc_msg_do_trap: syscall\n" \
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"_hurd_intr_rpc_msg_in_trap: move %0, $2\n" \
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: "=r" (err) \
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: "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \
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"r" (__rcv_name), "r" (__timeout), "r" (__notify) \
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: "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", "$10", \
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"$11", "$12", "$13", "$14", "$15", "$24", "$25", "$28"); \
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err; \
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})
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#endif
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static inline void
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INTR_MSG_BACK_OUT (struct mips_thread_state *state)
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{
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return;
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}
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#include "hurdfault.h"
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static inline int
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SYSCALL_EXAMINE (struct mips_thread_state *state, int *callno)
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{
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u_int32_t *p = (void *) (state->pc - 4);
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int result;
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if (_hurdsig_catch_memory_fault (p))
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return 0;
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if (result = (*p == 0x0000000c))
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/* The PC is just after a `syscall' instruction.
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This is a system call in progress; v0($2) holds the call number. */
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*callno = state->r2;
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_hurdsig_end_catch_fault ();
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return result;
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}
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struct mach_msg_trap_args
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{
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/* This is the order of arguments to mach_msg_trap. */
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mach_msg_header_t *msg;
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mach_msg_option_t option;
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mach_msg_size_t send_size;
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mach_msg_size_t rcv_size;
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mach_port_t rcv_name;
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mach_msg_timeout_t timeout;
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mach_port_t notify;
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};
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static inline mach_port_t
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MSG_EXAMINE (struct mips_thread_state *state, int *msgid)
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{
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mach_msg_header_t *msg;
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mach_port_t send_port;
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msg = (mach_msg_header_t *) state->r4;
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if (_hurdsig_catch_memory_fault (msg))
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return MACH_PORT_NULL;
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send_port = msg->msgh_remote_port;
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*msgid = msg->msgh_id;
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_hurdsig_end_catch_fault ();
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return send_port;
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}
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