| /* 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; \ |
| }) \ |
| ); \ |
| }) |