diff options
| -rw-r--r-- | glibc/startup.mdwn | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/glibc/startup.mdwn b/glibc/startup.mdwn index 9e1137f5..0fe15b3b 100644 --- a/glibc/startup.mdwn +++ b/glibc/startup.mdwn @@ -35,7 +35,13 @@ is quite hairy on GNU Hurd systems. * `init1` checks the new stack, calls `_hurd_init` (hurd/hurdinit.c) * `_hurd_init` initializes initial ports, 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, an initialization function given as parameter, then calls application's `main`, then `exit`. + * `__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_start_main`, it calls calls application's `main`, then `exit`. ## dynamically-linked program @@ -57,7 +63,12 @@ is quite hairy on GNU Hurd systems. * 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, tls, libpthread, atexit, an initialization function given as parameter, then calls application's `main`, then `exit`. + * `__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` + * `_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_start_main`, it calls application's `main`, then `exit`. # IRC, freenode, #hurd, 2013-12-31 |