2001-11-10 00:37:59 +00:00
|
|
|
|
/* Machine-dependent details of interruptible RPC messaging. PowerPC version.
|
|
|
|
|
|
Copyright (C) 1995,96,97,99,2001 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. */
|
|
|
|
|
|
|
|
|
|
|
|
#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" \
|
|
|
|
|
|
" mr 3, %1\n" \
|
|
|
|
|
|
" mr 4, %2\n" \
|
|
|
|
|
|
" mr 5, %3\n" \
|
|
|
|
|
|
" mr 6, %4\n" \
|
|
|
|
|
|
" mr 7, %5\n" \
|
|
|
|
|
|
" mr 8, %6\n" \
|
|
|
|
|
|
" mr 9, %7\n" \
|
|
|
|
|
|
" li 0, -25\n" \
|
|
|
|
|
|
"_hurd_intr_rpc_msg_do_trap: sc\n" \
|
|
|
|
|
|
"_hurd_intr_rpc_msg_in_trap: mr 3, %0\n" \
|
|
|
|
|
|
: "=r" (err) \
|
|
|
|
|
|
: "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \
|
|
|
|
|
|
"r" (rcv_name), "r" (timeout), "r" (notify) \
|
|
|
|
|
|
: "0", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"); \
|
|
|
|
|
|
err; \
|
|
|
|
|
|
})
|
|
|
|
|
|
|
|
|
|
|
|
static void inline
|
|
|
|
|
|
INTR_MSG_BACK_OUT (struct ppc_thread_state *state)
|
|
|
|
|
|
{
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#include "hurdfault.h"
|
|
|
|
|
|
|
|
|
|
|
|
/* This cannot be an inline function because it calls setjmp. */
|
|
|
|
|
|
#define SYSCALL_EXAMINE(state, callno) \
|
|
|
|
|
|
({ \
|
|
|
|
|
|
u_int32_t *p = (void *) ((state)->srr0 - 4); \
|
|
|
|
|
|
int result; \
|
|
|
|
|
|
_hurdsig_catch_memory_fault (p) ? 0 : \
|
|
|
|
|
|
({ \
|
|
|
|
|
|
if (result = (*p == 0x44000002)) \
|
|
|
|
|
|
/* The PC is just after an `sc' instruction. \
|
|
|
|
|
|
This is a system call in progress; %r0 holds the call number. */ \
|
|
|
|
|
|
*(callno) = (state)->r0; \
|
|
|
|
|
|
_hurdsig_end_catch_fault (); \
|
|
|
|
|
|
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;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* This cannot be an inline function because it calls setjmp. */
|
|
|
|
|
|
#define MSG_EXAMINE(state, msgid, rcv_name, send_name, option, timeout) \
|
|
|
|
|
|
({ \
|
|
|
|
|
|
mach_msg_header_t *msg = (mach_msg_header_t *) (state)->r3; \
|
|
|
|
|
|
*(option) = (mach_msg_option_t) (state)->r4; \
|
|
|
|
|
|
*(rcv_name) = (mach_port_t) (state)->r7; \
|
|
|
|
|
|
*(timeout) = (mach_msg_timeout_t) (state)->r8; \
|
|
|
|
|
|
(msg == 0) ? \
|
|
|
|
|
|
({ \
|
|
|
|
|
|
*(send_name) = MACH_PORT_NULL; \
|
|
|
|
|
|
*(msgid) = 0; \
|
|
|
|
|
|
0; \
|
|
|
|
|
|
}) : \
|
|
|
|
|
|
(_hurdsig_catch_memory_fault (msg) ? -1 : \
|
|
|
|
|
|
({ \
|
|
|
|
|
|
*(send_name) = msg->msgh_remote_port; \
|
|
|
|
|
|
*(msgid) = msg->msgh_id; \
|
|
|
|
|
|
_hurdsig_end_catch_fault (); \
|
|
|
|
|
|
0; \
|
|
|
|
|
|
}) \
|
|
|
|
|
|
); \
|
2002-01-02 06:21:52 +00:00
|
|
|
|
})
|
