From 3db52d94e2dcd03925664df6a09e9676ad1f2baf Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 8 Mar 1998 15:26:29 +0000 Subject: Update. 1998-03-08 14:58 Ulrich Drepper * Makeconfig (nisobjdir): Set to path to nis directory. (rpath-link): Add nisobjdir. Patch by Sven Verdoolaege . * elf/Makefile: Pretty print. * elf/dl-lookup.c: Include unistd.h. * elf/dl-runtime.c: Likewise. * localedata/Makefile (test-srcs): Add tst-rpmatch. (distribute): Add tst-rpmatch.sh. (tests): Add tst-rpmatch to dependency list and run tst-rpmatch.sh. New tests for rpmatch function by Jochen Hein . * localedata/tst-rpmatch.c: New file. * localedata/tst-rpmatch.sh: New file. * localedata/locales/de_DE: Correct yesexpr and noexpr. * localedata/locales/de_AT: Likewise. * posix/getopt.c: Update contact address. * posix/getopt1.c: Pretty print. * sysdeps/generic/libc-start.c: Do most of the initialization now here instead of in start.S. * sysdeps/unix/sysv/linux/libc-start.c: Likewise. * sysdeps/i386/elf/start.S: Remove most of the initialization code. * sysdeps/unix/sysv/linux/i386/profil-counter.h: No need for profil_counter to be public. 1998-03-08 13:06 Tim Waugh * posix/wordexp.c (parse_arith): Now works for negative numbers too. (parse_param): Coded parameter length expansion (${#var}). (parse_param): Handling for "=", "+", "-", and the ":" versions added. (parse_param): Cleaned up (fixed) error handling. * posix/wordexp-test.c: IFS now includes non-whitespace character (comma). Added more tests. --- sysdeps/i386/elf/start.S | 51 ++++++++++++------------------------------------ 1 file changed, 13 insertions(+), 38 deletions(-) (limited to 'sysdeps/i386/elf/start.S') diff --git a/sysdeps/i386/elf/start.S b/sysdeps/i386/elf/start.S index e8ed2043ff..95f74ed647 100644 --- a/sysdeps/i386/elf/start.S +++ b/sysdeps/i386/elf/start.S @@ -43,57 +43,32 @@ _start: the outermost frame obviously. */ xorl %ebp, %ebp - /* %edx contains the address of the shared library termination - function, which we will register with `atexit' to be called by - `exit'. I suspect that on some systems, and when statically - linked, this will not be set by anything to any function - pointer; hopefully it will be zero so we don't try to call - random pointers. */ - testl %edx,%edx - jz .Lnofini - pushl %edx - call atexit - popl %eax /* Pop value to unused register to remove - argument from stack. */ -.Lnofini: - - /* Do essential libc initialization. In statically linked - programs under the GNU Hurd, this is what sets up the - arguments on the stack for the code below. */ - call __libc_init_first - - /* Extract the arguments and environment as encoded on the stack - and set up the arguments for `main': argc, argv, envp. */ + /* Extract the arguments as encoded on the stack and set up + the arguments for `main': argc, argv. envp will be determined + later in __libc_start_main. */ popl %esi /* Pop the argument count. */ - leal 4(%esp,%esi,4), %eax /* envp = &argv[argc + 1] */ - movl %eax, _environ /* Store it in the global variable. */ - movl %esp, %edx /* argv starts just at the current stack top.*/ + movl %esp, %ecx /* argv starts just at the current stack top.*/ /* Before pushing the arguments align the stack to a double word boundary to avoid penalties from misaligned accesses. Thanks to Edward Seidl for pointing this out. */ andl $0xfffffff8, %esp - pushl %eax /* Push garbage because we allocate - twelve more bytes. */ + pushl %edx /* Push address of the shared library + termination function. */ - pushl %eax /* Push third argument: envp. */ - pushl %edx /* Push second argument: argv. */ + /* Push address of our own entry points to .fini and .init. */ + pushl $_fini + pushl $_init + + pushl %ecx /* Push second argument: argv. */ pushl %esi /* Push first argument: argc. */ - /* Call `_init', which is the entry point to our own `.init' - section; and register with `atexit' to have `exit' call - `_fini', which is the entry point to our own `.fini' section. */ - call _init - pushl $_fini - call atexit - popl %eax + pushl $main /* Call the user's main function, and exit with its value. But let the libc call main. */ - movl $main, %eax - pushl %eax call __libc_start_main - call exit + hlt /* Crash if somehow `exit' does return. */ /* To fulfill the System V/i386 ABI we need this symbol. Yuck, it's so -- cgit v1.2.3