diff options
Diffstat (limited to 'sysdeps/mach/hurd')
| -rw-r--r-- | sysdeps/mach/hurd/Makefile | 3 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/dl-sysdep.c | 8 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/fchdir.c | 10 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/fork.c | 6 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/intr-msg.h | 55 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/trampoline.c | 16 |
6 files changed, 76 insertions, 22 deletions
diff --git a/sysdeps/mach/hurd/Makefile b/sysdeps/mach/hurd/Makefile index c650f5f392..462eb23b0e 100644 --- a/sysdeps/mach/hurd/Makefile +++ b/sysdeps/mach/hurd/Makefile @@ -1,4 +1,4 @@ -# Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. +# Copyright (C) 1993, 1994, 1995, 1996 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 @@ -65,6 +65,7 @@ vpath hurd/%.h $(hurd-srcdir) # This bypasses all the system call stubs and uses any existing posix or # generic C files instead. inhibit-sysdep-asm += unix* +inhibit-unix-syscalls = yes # Don't try to generate anything from the installed Unix system and its # libraries. That is only of use when building for a Unix system, so as to diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c index fece47ba97..21f94f812a 100644 --- a/sysdeps/mach/hurd/dl-sysdep.c +++ b/sysdeps/mach/hurd/dl-sysdep.c @@ -48,14 +48,18 @@ unsigned int __hurd_threadvar_max = _HURD_THREADVAR_MAX; static unsigned long int threadvars[_HURD_THREADVAR_MAX]; unsigned long int __hurd_threadvar_stack_offset = (unsigned long int) &threadvars; +unsigned long int __hurd_sigthread_stack_base; +unsigned long int __hurd_sigthread_stack_end; +unsigned long int *__hurd_sigthread_variables; +unsigned long int __hurd_threadvar_stack_mask; /* XXX loser kludge for vm_map kernel bug */ static vm_address_t fmha; static vm_size_t fmhs; -static void unfmh(){ +static void unfmh(void){ __vm_deallocate(__mach_task_self(),fmha,fmhs);} -static void fmh() { +static void fmh(void) { error_t err;int x;mach_port_t p; vm_address_t a=0x08000000U,max=VM_MAX_ADDRESS; while (!(err=__vm_region(__mach_task_self(),&a,&fmhs,&x,&x,&x,&x,&p,&x))){ diff --git a/sysdeps/mach/hurd/fchdir.c b/sysdeps/mach/hurd/fchdir.c index 7c1be4fdd3..23fde24f4f 100644 --- a/sysdeps/mach/hurd/fchdir.c +++ b/sysdeps/mach/hurd/fchdir.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. +/* Copyright (C) 1991, 92, 93, 94, 95, 96 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 @@ -31,9 +31,11 @@ DEFUN(fchdir, (fd), int fd) error_t err; file_t dir; - err = HURD_DPORT_USE (fd, (dir = __file_name_lookup_under (port, "", - O_EXEC, 0), - errno)); + err = HURD_DPORT_USE (fd, + ({ + dir = __file_name_lookup_under (port, "", O_EXEC, 0); + dir == MACH_PORT_NULL ? errno : 0; + })); if (! err) _hurd_port_set (&_hurd_ports[INIT_PORT_CWDIR], dir); diff --git a/sysdeps/mach/hurd/fork.c b/sysdeps/mach/hurd/fork.c index 8c6ef12d10..8d730ae4fb 100644 --- a/sysdeps/mach/hurd/fork.c +++ b/sysdeps/mach/hurd/fork.c @@ -252,6 +252,12 @@ __fork (void) if (old != MACH_PORT_NULL) /* XXX what to do here? */ __mach_port_deallocate (__mach_task_self (), old); + /* The new task will receive its own exceptions + on its message port. */ + if (err = __task_set_special_port (newtask, + TASK_EXCEPTION_PORT, + port)) + LOSE; } if (err = __mach_port_insert_right (newtask, portnames[i], diff --git a/sysdeps/mach/hurd/i386/intr-msg.h b/sysdeps/mach/hurd/i386/intr-msg.h index 353a6d2acd..43d244a182 100644 --- a/sysdeps/mach/hurd/i386/intr-msg.h +++ b/sysdeps/mach/hurd/i386/intr-msg.h @@ -1,5 +1,5 @@ /* Machine-dependent details of interruptible RPC messaging. i386 version. -Copyright (C) 1995 Free Software Foundation, Inc. +Copyright (C) 1995, 1996 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 @@ -45,3 +45,56 @@ INTR_MSG_BACK_OUT (struct i386_thread_state *state) else state->ecx = state->uesp; } + +#include "hurdfault.h" + +static inline int +SYSCALL_EXAMINE (struct i386_thread_state *state, int *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 (); + return 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; + }; + + +static inline mach_port_t +MSG_EXAMINE (struct i386_thread_state *state, int *msgid) +{ + const struct mach_msg_trap_args *args = (const void *) state->uesp; + mach_msg_header_t *msg; + mach_port_t send_port; + + if (_hurdsig_catch_memory_fault (args)) + return MACH_PORT_NULL; + msg = args->msg; + _hurdsig_end_catch_fault (); + + 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; +} diff --git a/sysdeps/mach/hurd/i386/trampoline.c b/sysdeps/mach/hurd/i386/trampoline.c index f64539a384..bd91c24304 100644 --- a/sysdeps/mach/hurd/i386/trampoline.c +++ b/sysdeps/mach/hurd/i386/trampoline.c @@ -23,21 +23,9 @@ Cambridge, MA 02139, USA. */ #include <assert.h> #include <errno.h> #include "hurdfault.h" +#include "intr-msg.h" -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; - }; - struct sigcontext * _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, int signo, long int sigcode, @@ -94,7 +82,7 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, per-thread variables, cthreads. */ } /* This code has intimate knowledge of the special mach_msg system call - done in intr-msg.c; that code does: + done in intr-msg.c; that code does (see intr-msg.h): movl %esp, %ecx leal ARGS, %esp _hurd_intr_rpc_msg_cx_sp: movl $-25, %eax |