diff options
Diffstat (limited to 'sysdeps/mach/hurd/alpha/intr-msg.h')
| -rw-r--r-- | sysdeps/mach/hurd/alpha/intr-msg.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/alpha/intr-msg.h b/sysdeps/mach/hurd/alpha/intr-msg.h new file mode 100644 index 0000000000..4f172124e3 --- /dev/null +++ b/sysdeps/mach/hurd/alpha/intr-msg.h @@ -0,0 +1,100 @@ +/* Machine-dependent details of interruptible RPC messaging. Alpha version. + Copyright (C) 2002 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" \ + " mov %1, $16\n" \ + " mov %2, $17\n" \ + " mov %3, $18\n" \ + " mov %4, $19\n" \ + " mov %5, $20\n" \ + " mov %6, $21\n" \ + " mov %7, $1\n" \ + " lda $0, -25\n" \ + "_hurd_intr_rpc_msg_do_trap: callsys\n" \ + "_hurd_intr_rpc_msg_in_trap: ret\n" \ + : "=r" (err) \ + : "r" (msg), "r" (option), "r" (send_size), "r" (rcv_size), \ + "r" (rcv_name), "r" (timeout), "r" (notify) \ + : "16", "17", "18", "19", "20", "21", "1", "0"); \ + err; \ +}) + +static void inline +INTR_MSG_BACK_OUT (struct alpha_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)->pc - 4); \ + int result; \ + _hurdsig_catch_memory_fault (p) ? 0 : \ + ({ \ + result = (*p == 0x00000083); \ + _hurdsig_end_catch_fault (); \ + if (result) \ + /* The PC is just after a `callsys' instruction. \ + This is a system call in progress; v0 holds the call number. */ \ + *(callno) = (state)->r0; \ + 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)->r16; \ + *(option) = (mach_msg_option_t) (state)->r17; \ + *(rcv_name) = (mach_port_t) (state)->r18; \ + *(timeout) = (mach_msg_timeout_t) (state)->r19; \ + (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; \ + }) \ + ); \ +}) |