mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 10:21:05 +00:00
868df0f9e9
* sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Depend on libc-modules.h * sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Remove unused declaration of _hurd_intr_rpc_msg_in_trap. * mach/mach_init.c (__mach_init): Test whether HAVE_HOST_PAGE_SIZE is defined instead of whether it is non-zero. * sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Use "+m" input constraint instead of both input and output constraint. Use ecx clobber instead of %ecx. * sysdeps/mach/hurd/malloc-machine.h (mutex_init, mutex_lock, mutex_unlock): Use a statement expression instead of an expression list. * sysdeps/mach/hurd/setitimer.c (_hurd_itimer_thread_stack_size): Set type to vm_size_t instead of vm_address_t. * sysdeps/mach/hurd/fork.c (__fork): Test whether STACK_GROWTH_UP is defined instead of whether it is non-zero. * hurd/hurd/ioctl.h (_hurd_locked_install_cttyid): New declaration. * sysdeps/mach/hurd/setsid.c: Include <hurd/ioctl.h>. * sysdeps/mach/hurd/mmap.c (__mmap): Use 0 instead of NULL for comparisons with mapaddr. * nscd/nscd-client.h: Include <time.h>. * sysdeps/mach/hurd/dl-sysdep.c (fmh): Pass vm_offset_t dummy 9th parameter to __vm_region instead of int.
113 lines
4.2 KiB
C
113 lines
4.2 KiB
C
/* Machine-dependent details of interruptible RPC messaging. i386 version.
|
||
Copyright (C) 1995-2015 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, see
|
||
<http://www.gnu.org/licenses/>. */
|
||
|
||
|
||
/* Note that we must mark OPTION and TIMEOUT as outputs of this operation,
|
||
to indicate that the signal thread might mutate them as part
|
||
of sending us to a signal handler. */
|
||
#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" \
|
||
".globl _hurd_intr_rpc_msg_cx_sp\n" \
|
||
".globl _hurd_intr_rpc_msg_sp_restored\n" \
|
||
" movl %%esp, %%ecx\n" \
|
||
" leal %3, %%esp\n" \
|
||
"_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\n" \
|
||
"_hurd_intr_rpc_msg_do_trap: lcall $7, $0 # status in %0\n" \
|
||
"_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \
|
||
"_hurd_intr_rpc_msg_sp_restored:" \
|
||
: "=a" (err), "+m" (option), "+m" (timeout) \
|
||
: "m" ((&msg)[-1]) \
|
||
: "ecx"); \
|
||
err; \
|
||
})
|
||
|
||
|
||
static void inline
|
||
INTR_MSG_BACK_OUT (struct i386_thread_state *state)
|
||
{
|
||
extern const void _hurd_intr_rpc_msg_cx_sp;
|
||
if (state->eip >= (natural_t) &_hurd_intr_rpc_msg_cx_sp)
|
||
state->uesp = state->ecx;
|
||
else
|
||
state->ecx = state->uesp;
|
||
}
|
||
|
||
#include "hurdfault.h"
|
||
|
||
/* This cannot be an inline function because it calls setjmp. */
|
||
#define SYSCALL_EXAMINE(state, callno) \
|
||
({ \
|
||
struct { unsigned int c[2]; } *p = (void *) ((state)->eip - 7); \
|
||
int result; \
|
||
if (_hurdsig_catch_memory_fault (p)) \
|
||
return 0; \
|
||
if (result = p->c[0] == 0x0000009a && (p->c[1] & 0x00ffffff) == 0x00000700) \
|
||
/* The PC is just after an `lcall $7,$0' instruction. \
|
||
This is a system call in progress; %eax holds the call number. */ \
|
||
*(callno) = (state)->eax; \
|
||
_hurdsig_end_catch_fault (); \
|
||
result; \
|
||
})
|
||
|
||
|
||
struct mach_msg_trap_args
|
||
{
|
||
void *retaddr; /* Address mach_msg_trap will return to. */
|
||
/* 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, rcvname, send_name, opt, tmout) \
|
||
({ \
|
||
const struct mach_msg_trap_args *args = (const void *) (state)->uesp; \
|
||
mach_msg_header_t *msg; \
|
||
_hurdsig_catch_memory_fault (args) ? -1 : \
|
||
({ \
|
||
msg = args->msg; \
|
||
*(opt) = args->option; \
|
||
*(tmout) = args->timeout; \
|
||
*(rcvname) = args->rcv_name; \
|
||
_hurdsig_end_catch_fault (); \
|
||
if (msg == 0) \
|
||
{ \
|
||
*(send_name) = MACH_PORT_NULL; \
|
||
*(msgid) = 0; \
|
||
} \
|
||
else \
|
||
{ \
|
||
if (_hurdsig_catch_memory_fault (msg)) \
|
||
return -1; \
|
||
*(send_name) = msg->msgh_remote_port; \
|
||
*(msgid) = msg->msgh_id; \
|
||
_hurdsig_end_catch_fault (); \
|
||
} \
|
||
0; \
|
||
}); \
|
||
})
|