diff options
Diffstat (limited to 'sysdeps/mach/hurd/mips/intr-msg.h')
| -rw-r--r-- | sysdeps/mach/hurd/mips/intr-msg.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/mips/intr-msg.h b/sysdeps/mach/hurd/mips/intr-msg.h new file mode 100644 index 0000000000..16c78972ac --- /dev/null +++ b/sysdeps/mach/hurd/mips/intr-msg.h @@ -0,0 +1,127 @@ +/* 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; +} |