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/* Machine-dependent details of interruptible RPC messaging. Mips version.
Copyright (C) 1996, 1997 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 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. */
#ifdef __mips64
#define INTR_MSG_TRAP(msg, option, send_size, rcv_size, rcv_name, timeout, notify) \
({ \
error_t err; \
mach_port_t __rcv_name = (rcv_name); \
mach_msg_timeout_t __timeout = (timeout); \
mach_port_t __notify = (notify); \
asm (".globl _hurd_intr_rpc_msg_do_trap\n" \
".globl _hurd_intr_rpc_msg_in_trap\n" \
" move $4, %1\n" \
" move $5, %2\n" \
" move $6, %3\n" \
" move $7, %4\n" \
" move $8, %5\n" \
" move $9, %6\n" \
" move $10, %7\n" \
" dli $2, -25\n" \
"_hurd_intr_rpc_msg_do_trap: syscall\n" \
"_hurd_intr_rpc_msg_in_trap: move %0, $2\n" \
: "=r" (err) \
: "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \
"r" (__rcv_name), "r" (__timeout), "r" (__notify) \
: "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", "$10", \
"$11", "$12", "$13", "$14", "$15", "$24", "$25", "$28"); \
err; \
})
#else
#define INTR_MSG_TRAP(msg, option, send_size, rcv_size, rcv_name, timeout, notify) \
({ \
error_t err; \
mach_port_t __rcv_name = (rcv_name); \
mach_msg_timeout_t __timeout = (timeout); \
mach_port_t __notify = (notify); \
asm (".globl _hurd_intr_rpc_msg_do_trap\n" \
".globl _hurd_intr_rpc_msg_in_trap\n" \
" move $4, %1\n" \
" move $5, %2\n" \
" move $6, %3\n" \
" move $7, %4\n" \
" move $8, %5\n" \
" move $9, %6\n" \
" move $10, %7\n" \
" li $2, -25\n" \
"_hurd_intr_rpc_msg_do_trap: syscall\n" \
"_hurd_intr_rpc_msg_in_trap: move %0, $2\n" \
: "=r" (err) \
: "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \
"r" (__rcv_name), "r" (__timeout), "r" (__notify) \
: "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", "$10", \
"$11", "$12", "$13", "$14", "$15", "$24", "$25", "$28"); \
err; \
})
#endif
static inline void
INTR_MSG_BACK_OUT (struct mips_thread_state *state)
{
return;
}
#include "hurdfault.h"
static inline int
SYSCALL_EXAMINE (struct mips_thread_state *state, int *callno)
{
u_int32_t *p = (void *) (state->pc - 4);
int result;
if (_hurdsig_catch_memory_fault (p))
return 0;
if (result = (*p == 0x0000000c))
/* The PC is just after a `syscall' instruction.
This is a system call in progress; v0($2) holds the call number. */
*callno = state->r2;
_hurdsig_end_catch_fault ();
return result;
}
struct mach_msg_trap_args
{
/* This is the order of arguments to mach_msg_trap. */
mach_msg_header_t *msg;
mach_msg_option_t option;
mach_msg_size_t send_size;
mach_msg_size_t rcv_size;
mach_port_t rcv_name;
mach_msg_timeout_t timeout;
mach_port_t notify;
};
static inline mach_port_t
MSG_EXAMINE (struct mips_thread_state *state, int *msgid)
{
mach_msg_header_t *msg;
mach_port_t send_port;
msg = (mach_msg_header_t *) state->r4;
if (_hurdsig_catch_memory_fault (msg))
return MACH_PORT_NULL;
send_port = msg->msgh_remote_port;
*msgid = msg->msgh_id;
_hurdsig_end_catch_fault ();
return send_port;
}
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