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Move main bootstrap to platform-specific object

Browse Source 
To prevent multiple execution of main-bootstrap, I moved the code to a
statically initialized object. The reason for this change is that
_main() is exeuted twice when starting dynamic binaries. Now, the object
is part of the base-common library which is linked with ld.lib.so.
This commit is contained in:
Christian Helmuth 2013-09-10 14:33:14 +02:00
parent 4556a9e353
commit f763e5ec2a
19 changed files with 191 additions and 155 deletions
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9
base-codezero/lib/mk/base-common.mk
View File

@ -6,7 +6,7 @@
LIBS += cxx l4 startup
SRC_CC += cap_copy.cc
SRC_CC += cap_copy.cc main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc ipc/ipc_marshal_cap.cc
SRC_CC += pager/pager.cc
SRC_CC += avl_tree/avl_tree.cc
@ -28,6 +28,7 @@ INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
INC_DIR += $(REP_DIR)/include/codezero/dummies
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

32
base-codezero/src/platform/_main_helper.h → base-codezero/src/platform/main_bootstrap.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Norman Feske
* \author Christian Helmuth
* \date 2009-10-02
*/
@ -11,14 +12,11 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
/* Genode includes */
#include <base/stdint.h>
#include <base/printf.h>
/* make Codezero includes happy */
extern "C" char *strncpy(char *dest, const char *src, Genode::size_t n);
extern "C" void *memcpy(void *dest, const void *src, Genode::size_t n);
#include <base/thread.h>
#include <util/string.h>
/* Codezero includes */
#include <codezero/syscalls.h>
@ -59,19 +57,25 @@ extern "C" int printf(const char *format, ...)
** Startup-code helpers **
**************************/
namespace Genode { void platform_main_bootstrap(); }
Genode::Native_thread_id main_thread_tid;
Codezero::l4_mutex main_thread_running_lock;
static void main_thread_bootstrap()
void Genode::platform_main_bootstrap()
{
Codezero::__l4_init();
static struct Bootstrap
{
Bootstrap()
{
Codezero::__l4_init();
main_thread_tid = Codezero::thread_myself();
main_thread_tid = Codezero::thread_myself();
Codezero::l4_mutex_init(&main_thread_running_lock);
Codezero::l4_mutex_lock(&main_thread_running_lock); /* block on first mutex lock */
Codezero::l4_mutex_init(&main_thread_running_lock);
Codezero::l4_mutex_lock(&main_thread_running_lock); /* block on first mutex lock */
}
} bootstrap;
}
#endif /* _PLATFORM___MAIN_HELPER_H_ */

9
base-fiasco/lib/mk/base-common.mk
View File

@ -6,7 +6,7 @@
LIBS += cxx startup
SRC_CC += cap_copy.cc
SRC_CC += cap_copy.cc main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc ipc/ipc_marshal_cap.cc
SRC_CC += pager/pager.cc
SRC_CC += avl_tree/avl_tree.cc
@ -25,6 +25,7 @@ SRC_CC += thread/thread.cc thread/thread_bootstrap_empty.cc thread/trace.cc
INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

7
base-fiasco/src/platform/_main_helper.h → base-fiasco/src/platform/main_bootstrap.cc
View File

@ -11,9 +11,4 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
static void main_thread_bootstrap() { }
#endif /* _PLATFORM___MAIN_HELPER_H_ */
namespace Genode { void platform_main_bootstrap() { /* dummy */ } }

8
base-foc/lib/mk/base-common.inc
View File

@ -6,6 +6,7 @@
LIBS += cxx syscall startup
SRC_CC += main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc
SRC_CC += pager/pager.cc
SRC_CC += avl_tree/avl_tree.cc
@ -26,5 +27,8 @@ INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
# vi: set ft=make :

29
base-foc/src/platform/_main_helper.h → base-foc/src/platform/main_bootstrap.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Christian Prochaska
* \author Christian Helmuth
* \date 2009-08-05
*/
@ -11,9 +12,6 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
/* Genode includes */
#include <base/stdint.h>
#include <base/native_types.h>
@ -23,16 +21,21 @@ namespace Fiasco {
#include <l4/sys/utcb.h>
}
enum { MAIN_THREAD_CAP_ID = 1 };
static void main_thread_bootstrap() {
using namespace Genode;
namespace Genode { void platform_main_bootstrap(); }
Cap_index *i
= cap_map()->insert(MAIN_THREAD_CAP_ID, Fiasco::MAIN_THREAD_CAP);
Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_BADGE] = (unsigned long) i;
Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_THREAD_OBJ] = 0;
void Genode::platform_main_bootstrap()
{
static struct Bootstrap
{
enum { MAIN_THREAD_CAP_ID = 1 };
Bootstrap()
{
Cap_index *i(cap_map()->insert(MAIN_THREAD_CAP_ID, Fiasco::MAIN_THREAD_CAP));
Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_BADGE] = (unsigned long) i;
Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_THREAD_OBJ] = 0;
}
} bootstrap;
}
#endif /* _PLATFORM___MAIN_HELPER_H_ */

6
base-hw/lib/mk/base-common.mk
View File

@ -6,6 +6,7 @@
LIBS += cxx syscall
SRC_CC += main_bootstrap.cc
SRC_CC += ipc.cc ipc/ipc_marshal_cap.cc
SRC_CC += avl_tree/avl_tree.cc
SRC_CC += allocator/slab.cc
@ -24,5 +25,6 @@ INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

18
base-hw/src/platform/_main_helper.h → base-hw/src/platform/main_bootstrap.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Martin Stein
* \author Christian Helmuth
* \date 2010-09-13
*/
@ -11,19 +12,20 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _SRC__PLATFORM__MAIN_HELPER_H_
#define _SRC__PLATFORM__MAIN_HELPER_H_
/* Genode includes */
#include <base/native_types.h>
namespace Genode { void platform_main_bootstrap(); }
Genode::Native_thread_id main_thread_tid;
static void main_thread_bootstrap()
void Genode::platform_main_bootstrap()
{
main_thread_tid = Kernel::current_thread_id();
static struct Bootstrap
{
Bootstrap() { main_thread_tid = Kernel::current_thread_id(); }
} bootstrap;
}
#endif /* _SRC__PLATFORM__MAIN_HELPER_H_ */

6
base-linux/lib/mk/base-common.mk
View File

@ -6,6 +6,7 @@
LIBS += syscall
SRC_CC += main_bootstrap.cc
SRC_CC += ipc/ipc.cc
SRC_CC += avl_tree/avl_tree.cc
SRC_CC += allocator/slab.cc
@ -27,5 +28,6 @@ INC_DIR += $(REP_DIR)/src/base/env
INC_DIR += $(REP_DIR)/src/platform $(BASE_DIR)/src/platform
INC_DIR += $(BASE_DIR)/src/base/thread
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

59
base-linux/src/platform/_main_helper.h
View File

@ -1,59 +0,0 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Christian Prochaska
* \date 2009-08-05
*/
/*
* Copyright (C) 2009-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
#include <base/thread.h>
#include <linux_syscalls.h>
/*
* Define 'lx_environ' pointer.
*/
char **lx_environ;
/**
* Natively aligned memory location used in the lock implementation
*/
int main_thread_futex_counter __attribute__((aligned(sizeof(Genode::addr_t))));
static inline void main_thread_bootstrap()
{
using namespace Genode;
extern Genode::addr_t *__initial_sp;
/*
* Initialize the 'lx_environ' pointer
*
* environ = &argv[argc + 1]
* __initial_sp[0] = argc (always 1 in Genode)
* __initial_sp[1] = argv[0]
* __initial_sp[2] = NULL
* __initial_sp[3] = environ
*
*/
lx_environ = (char**)&__initial_sp[3];
/* reserve context area */
Genode::addr_t base = Native_config::context_area_virtual_base();
Genode::size_t size = Native_config::context_area_virtual_size();
if (lx_vm_reserve(base, size) != base)
PERR("reservation of context area [%lx,%lx) failed",
(unsigned long) base, (unsigned long) base + size);
}
#endif /* _PLATFORM___MAIN_HELPER_H_ */

2
base-linux/src/platform/lx_hybrid.cc
View File

@ -13,7 +13,7 @@
#include <base/crt0.h>
#include <base/printf.h>
#include <_main_helper.h>
#include <linux_syscalls.h>
#include <linux_cpu_session/linux_cpu_session.h>

71
base-linux/src/platform/main_bootstrap.cc Normal file
View File

@ -0,0 +1,71 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Christian Prochaska
* \author Christian Helmuth
* \date 2009-08-05
*/
/*
* Copyright (C) 2009-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#include <base/thread.h>
#include <linux_syscalls.h>
namespace Genode { void platform_main_bootstrap(); }
/*
* Define 'lx_environ' pointer.
*/
char **lx_environ;
/**
* Natively aligned memory location used in the lock implementation
*/
int main_thread_futex_counter __attribute__((aligned(sizeof(Genode::addr_t))));
/**
* Initial value of SP register (in crt0)
*/
extern Genode::addr_t *__initial_sp;
/**
* Platform-specific bootstrap
*/
void Genode::platform_main_bootstrap()
{
static struct Bootstrap
{
Bootstrap()
{
/*
* Initialize the 'lx_environ' pointer
*
* environ = &argv[argc + 1]
* __initial_sp[0] = argc (always 1 in Genode)
* __initial_sp[1] = argv[0]
* __initial_sp[2] = NULL
* __initial_sp[3] = environ
*/
lx_environ = (char**)&__initial_sp[3];
/*
* Free context area preserved in linker script
*/
addr_t base = Native_config::context_area_virtual_base();
Genode::size_t size = Native_config::context_area_virtual_size();
int ret;
if ((ret = lx_munmap((void *)base, size)) < 0)
PERR("flushing of context area [%lx,%lx) failed (ret=%d)",
(unsigned long) base, (unsigned long) base + size, ret);
}
} bootstrap;
}

8
base-nova/lib/mk/base-common.inc
View File

@ -6,6 +6,7 @@
LIBS += cxx startup
SRC_CC += main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc
SRC_CC += avl_tree/avl_tree.cc
SRC_CC += allocator/slab.cc
@ -24,5 +25,8 @@ INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
# vi: set ft=make :

9
base-nova/src/platform/_main_helper.h → base-nova/src/platform/main_bootstrap.cc
View File

@ -12,11 +12,4 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
#include <nova/syscalls.h>
static void main_thread_bootstrap() {};
#endif /* _PLATFORM___MAIN_HELPER_H_ */
namespace Genode { void platform_main_bootstrap() { /* dummy */ } }

9
base-okl4/lib/mk/base-common.mk
View File

@ -6,7 +6,7 @@
LIBS += cxx startup
SRC_CC += cap_copy.cc
SRC_CC += cap_copy.cc main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc ipc/ipc_marshal_cap.cc
SRC_CC += pager/pager.cc
SRC_CC += avl_tree/avl_tree.cc
@ -25,6 +25,7 @@ SRC_CC += thread/thread.cc thread/thread_bootstrap.cc thread/trace.cc
INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

27
base-okl4/src/platform/_main_helper.h → base-okl4/src/platform/main_bootstrap.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Christian Prochaska
* \author Christian Helmuth
* \date 2009-08-05
*/
@ -11,9 +12,8 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
/* Genode includes */
#include <base/native_types.h>
/* OKL4-specific includes and definitions */
namespace Okl4 { extern "C" {
@ -40,16 +40,23 @@ namespace Okl4 {
}
namespace Genode { void platform_main_bootstrap(); }
Genode::Native_thread_id main_thread_tid;
static void main_thread_bootstrap()
void Genode::platform_main_bootstrap()
{
/* copy thread ID to utcb */
main_thread_tid.raw = Okl4::copy_uregister_to_utcb();
static struct Bootstrap
{
Bootstrap()
{
/* copy thread ID to utcb */
main_thread_tid.raw = Okl4::copy_uregister_to_utcb();
if (main_thread_tid.raw == 0) /* core */
main_thread_tid.raw = Okl4::L4_rootserver.raw;
if (main_thread_tid.raw == 0) /* core */
main_thread_tid.raw = Okl4::L4_rootserver.raw;
}
} bootstrap;
}
#endif /* _PLATFORM___MAIN_HELPER_H_ */

9
base-pistachio/lib/mk/base-common.mk
View File

@ -6,7 +6,7 @@
LIBS += cxx startup
SRC_CC += cap_copy.cc
SRC_CC += cap_copy.cc main_bootstrap.cc
SRC_CC += ipc/ipc.cc ipc/pager.cc ipc/ipc_marshal_cap.cc
SRC_CC += pager/pager.cc
SRC_CC += avl_tree/avl_tree.cc
@ -25,6 +25,7 @@ SRC_CC += thread/thread.cc thread/trace.cc thread/thread_bootstrap.cc
INC_DIR += $(REP_DIR)/src/base/lock
INC_DIR += $(BASE_DIR)/src/base/thread
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base
vpath main_bootstrap.cc $(REP_DIR)/src/platform
vpath cap_copy.cc $(BASE_DIR)/src/platform
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

19
base-pistachio/src/platform/_main_helper.h → base-pistachio/src/platform/main_bootstrap.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Platform-specific helper functions for the _main() function
* \author Christian Prochaska
* \author Christian Helmuth
* \date 2009-08-05
*/
@ -11,25 +12,25 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _PLATFORM___MAIN_HELPER_H_
#define _PLATFORM___MAIN_HELPER_H_
/* Genode includes */
#include <base/native_types.h>
/* Pistachio includes */
namespace Pistachio {
#include <l4/thread.h>
}
/* Genode includes */
#include <base/native_types.h>
namespace Genode { void platform_main_bootstrap(); }
Genode::Native_thread_id main_thread_tid;
static void main_thread_bootstrap()
void Genode::platform_main_bootstrap()
{
main_thread_tid = Pistachio::L4_Myself();
static struct Bootstrap
{
Bootstrap() { main_thread_tid = Pistachio::L4_Myself(); }
} bootstrap;
}
#endif /* _PLATFORM___MAIN_HELPER_H_ */

9
base/src/platform/_main.cc
View File

@ -25,7 +25,6 @@
#include <base/printf.h>
/* platform-specific local helper functions */
#include <_main_helper.h>
#include <_main_parent_cap.h>
@ -35,7 +34,8 @@ extern int main(int argc, char **argv, char **envp);
extern void init_exception_handling(); /* implemented in base/cxx */
namespace Genode {
extern Rm_session *env_context_area_rm_session();
Rm_session *env_context_area_rm_session();
void platform_main_bootstrap();
}
@ -225,10 +225,13 @@ namespace Genode { extern bool inhibit_tracing; }
/**
* C entry function called by the crt0 startup code
*
* Note, _main is executed twice when starting dynamic programs: in ld.lib.so
* and also in the loaded binary.
*/
extern "C" int _main()
{
main_thread_bootstrap();
platform_main_bootstrap();
/* call env() explicitly to setup the environment */
(void*)env();