diff options
| -rw-r--r-- | glibc/startup.mdwn | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/glibc/startup.mdwn b/glibc/startup.mdwn index 67d66c1b..7c3f3d5a 100644 --- a/glibc/startup.mdwn +++ b/glibc/startup.mdwn @@ -30,17 +30,17 @@ is quite hairy on GNU Hurd systems. * `_hurd_stack_setup` (sysdeps/mach/hurd/i386/init-first.c) calls `first_init` which calls `__mach_init` to initialize enough to run RPCs, then runs the `_hurd_preinit_hook` hooks, which initialize global variables of libc. * `_hurd_stack_setup` (sysdeps/mach/hurd/i386/init-first.c) calls `_hurd_startup`. * `_hurd_startup` (hurd/hurdstartup.c) gets hurdish information from servers and calls its `main` parameter. - * the `main` parameter was actually `doinit`, which mangles the stack and calls `doinit1` which calls `init`. + * the `main` parameter was actually `doinit` (in sysdeps/mach/hurd/i386/init-first.c), which mangles the stack and calls `doinit1` which calls `init`. * `init` sets threadvars, tries to initialize threads (and perhaps switches to the new stack) and gets to call `init1`. - * `init1` gets the Hurd block, calls `_hurd_init` (hurd/hurdinit.c) on it - * `_hurd_init` initializes initial ports, starts the signal thread, runs the `_hurd_subinit` hooks (`init_dtable` hurd/dtable.c notably initializes the FD table and the `_hurd_fd_subinit` hooks, which notably checks `std*`). + * `init1` gets the Hurd block, calls `_hurd_init` on it + * `_hurd_init` (hurd/hurdinit.c) initializes initial ports, starts the signal thread, runs the `_hurd_subinit` hooks (`init_dtable` hurd/dtable.c notably initializes the FD table and the `_hurd_fd_subinit` hooks, which notably checks `std*`). * We are back to `_start`, which jumps to `_start1` which is the normal libc startup which calls `__libc_start_main` * `__libc_start_main` (actually called `LIBC_START_MAIN` in csu/libc-start.c) initializes libc, tls, libpthread, atexit * `__libc_start_main` calls initialization function given as parameter `__libc_csu_init`, * `__libc_csu_init` (csu/elf-init.c) calls `preinit_array_start` functions * `__libc_csu_init` calls `_init` * `_init` (sysdeps/i386/crti.S) calls `PREINIT_FUNCTION`, (actually libpthread on Linux, `__gmon_start__` on hurd) - * back to `__libc_csu_init` (csu/elf-init.c) calls `init_array_start` functions + * back to `__libc_csu_init` calls `init_array_start` functions * back to `__libc_start_main`, it calls calls application's `main`, then `exit`. ## dynamically-linked program @@ -49,25 +49,25 @@ is quite hairy on GNU Hurd systems. * `_start` (sysdeps/i386/dl-machine.h) calls `_dl_start`. * `_dl_start` (elf/rtld.c) initializes `bootstrap_map`, calls `_dl_start_final` * `_dl_start_final` calls `_dl_sysdep_start`. - * `_dl_sysdep_start` calls `__mach_init` to initialize enough to run RPCs, then calls `_hurd_startup`. + * `_dl_sysdep_start` (sysdeps/mach/hurd/dl-sysdep.c) calls `__mach_init` to initialize enough to run RPCs, then calls `_hurd_startup`. * `_hurd_startup` (hurd/hurdstartup.c) gets hurdish information from servers and calls its `main` parameter. - * the `main` parameter was actually `go`, which calls `dl_main`. + * the `main` parameter was actually `go` inside `_dl_sysdep_start`, which calls `dl_main`. * `dl_main` (elf/rtld.c) interprets ld.so parameters, loads the binary and libraries, calls `_dl_allocate_tls_init`. * we are back to `go`, which branches to `_dl_start_user`. * `_dl_start_user` (./sysdeps/i386/dl-machine.h) runs `RTLD_START_SPECIAL_INIT` (sysdeps/mach/hurd/i386/dl-machine.h) which calls `_dl_init_first`. - * `_dl_init_first` calls `first_init` which calls `__mach_init` to initialize enough to run RPCs, then runs the `_hurd_preinit_hook` hooks, which initialize global variables of libc. - * `_dl_init_first` (sysdeps/mach/hurd/i386/init-first.c) calls `init`. + * `_dl_init_first` (sysdeps/mach/hurd/i386/init-first.c) calls `first_init` which calls `__mach_init` to initialize enough to run RPCs, then runs the `_hurd_preinit_hook` hooks, which initialize global variables of libc. + * `_dl_init_first` calls `init`. * `init` sets threadvars, tries to initialize threads (and perhaps switches to the new stack) and gets to call `init1`. - * `init1` gets the Hurd block, calls `_hurd_init` (hurd/hurdinit.c) on it - * `_hurd_init` initializes initial ports, starts the signal thread, runs the `_hurd_subinit` hooks (`init_dtable` hurd/dtable.c notably initializes the FD table and the `_hurd_fd_subinit` hooks, which notably checks `std*`). + * `init1` gets the Hurd block, calls `_hurd_init` on it + * `_hurd_init` (hurd/hurdinit.c) initializes initial ports, starts the signal thread, runs the `_hurd_subinit` hooks (`init_dtable` hurd/dtable.c notably initializes the FD table and the `_hurd_fd_subinit` hooks, which notably checks `std*`). * we are back to `_dl_start_user`, which calls `_dl_init` (elf/dl-init.c) which calls application initializers. * `_dl_start_user` jumps to the application's entry point, `_start` * `_start` (sysdeps/i386/start.S) calls `__libc_start_main` * `__libc_start_main` (actually called `LIBC_START_MAIN` in csu/libc-start.c) initializes libc, atexit, * `__libc_start_main` calls initialization function given as parameter `__libc_csu_init`, - * `__libc_csu_init` calls `_init` + * `__libc_csu_init` (csu/elf-init.c) calls `_init` * `_init` (sysdeps/i386/crti.S) calls `PREINIT_FUNCTION`, (actually libpthread on Linux, `__gmon_start__` on hurd) - * back to `__libc_csu_init` (csu/elf-init.c) calls `init_array_start` functions + * back to `__libc_csu_init` calls `init_array_start` functions * back to `__libc_start_main`, it calls application's `main`, then `exit`. # IRC, freenode, #hurd, 2013-12-31 |