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c0fb8a563c
1998-06-07 13:32 Ulrich Drepper <drepper@cygnus.com> * libc.map: Add _dl_profile. * elf/dl-reloc.c (_dl_relocate_object): Take extra argument, pass this to ELF_DYNAMIC_RELOCATE. Always allocate array for relocation result if LD_PROFILE is defined. * elf/ldsodefs.h: Adjust prototypes. * elf/dl-open.c (_dl_open): Call relocation function with extra argument. * elf/rtld.c: Likewise. * elf/dl-profile.c (_dl_mcount): Don't mark as internal function. Correct loop condition. * elf/dynamic-link.h: Don't examine _dl_profile variable, pass consider_profile to runtime setup function. * sysdeps/i386/dl-machine.h (elf_machine_runtime_setup): Use _dl_runtime_profile for all shared objects if LD_PROFILE is defined. * elf/dl-support.c: Define __libc_stack_end. * elf/rtld.c: Likewise. * sysdeps/generic/libc-start.c: Store last stack address in __libc_stack_end. * sysdeps/i386/dl-machine.h (_dl_start_user): Store stack address. * sysdeps/i386/elf/start.s: Call __libc_start_main with extra argument. * elf/elf.h: Include <features.h>, not <sys/cdefs.h>. Include <stdint.h>, not <inttypes.h>. * elf/sprof.c: Implement flat profiling. * libio/fgetc.c: Call _IO_cleanup_region_end with 0 and call _IO_funlockfile explicitly. * libio/fileops.c: Likewise. * libio/fputc.c: Likewise. * libio/freopen.c: Likewise. * libio/freopen64.c: Likewise. * libio/fseek.c: Likewise. * libio/fseeko.c: Likewise. * libio/fseeko64.c: Likewise. * libio/ftello.c: Likewise. * libio/ftello64.c: Likewise. * libio/getc.c: Likewise. * libio/getchar.c: Likewise. * libio/iofclose.c: Likewise. * libio/iofflush.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgetpos64.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/iofsetpos64.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogets.c: Likewise. * libio/ioputs.c: Likewise. * libio/ioseekoff.c: Likewise. * libio/ioseekpos.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/oldfileops.c: Likewise. * libio/oldiofclose.c: Likewise. * libio/peekc.c: Likewise. * libio/putc.c: Likewise. * libio/putchar.c: Likewise. * libio/rewind.c: Likewise. * malloc/mtrace.c: Pretty print. * misc/mntent.h (struct mentent): Make string elements const char *. * nis/nis_printf.c: Optimize I/O a little bit. * signal/Makefile (distribute): Add sigset-cvt-mask.h. * sysdeps/generic/sigset-cvt-mask.h: New file. * sysdeps/unix/sysv/linux/sigset-cvt-mask.h: New file. * sysdeps/unix/sysv/sysv4/sigset-cvt-mask.h: New file. * sysdeps/posix/sigvec.c: Rewrite the use definitions from sigset-cvt-mask.h to do the dirty work. Patches by Joe Keane. * sysdeps/posix/mkstemp.c: Save one precious byte of rodata. * sysdeps/unix/sysv/linux/i386/sysdep.h: Rewrite PSEUDO etc to make syscall_error label in case of PIC anonymous. * sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/i386/clone.S: Adapt for this change. * sysdeps/unix/sysv/linux/i386/mmap.S: Adapt for this change. * sysdeps/unix/sysv/linux/i386/s_pread64.S: Adapt for this change. * sysdeps/unix/sysv/linux/i386/s_pwrite64.S: Adapt for this change. * sysdeps/unix/sysv/linux/i386/socket.S: Adapt for this change. * sysdeps/unix/sysv/linux/i386/syscall.S: Adapt for this change.
93 lines
3.1 KiB
ArmAsm
93 lines
3.1 KiB
ArmAsm
/* Startup code compliant to the ELF i386 ABI.
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Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This is the canonical entry point, usually the first thing in the text
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segment. The SVR4/i386 ABI (pages 3-31, 3-32) says that when the entry
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point runs, most registers' values are unspecified, except for:
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%edx Contains a function pointer to be registered with `atexit'.
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This is how the dynamic linker arranges to have DT_FINI
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functions called for shared libraries that have been loaded
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before this code runs.
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%esp The stack contains the arguments and environment:
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0(%esp) argc
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4(%esp) argv[0]
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...
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(4*argc)(%esp) NULL
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(4*(argc+1))(%esp) envp[0]
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...
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NULL
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*/
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.text
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.globl _start
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_start:
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/* Clear the frame pointer. The ABI suggests this be done, to mark
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the outermost frame obviously. */
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xorl %ebp, %ebp
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/* Extract the arguments as encoded on the stack and set up
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the arguments for `main': argc, argv. envp will be determined
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later in __libc_start_main. */
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popl %esi /* Pop the argument count. */
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movl %esp, %ecx /* argv starts just at the current stack top.*/
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/* Before pushing the arguments align the stack to a double word
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boundary to avoid penalties from misaligned accesses. Thanks
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to Edward Seidl <seidl@janed.com> for pointing this out. */
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andl $0xfffffff8, %esp
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/* Provide the highest stack address to the user code (for stacks
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which grow downwards). */
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pushl %esp
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pushl %edx /* Push address of the shared library
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termination function. */
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/* Push address of our own entry points to .fini and .init. */
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pushl $_fini
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pushl $_init
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pushl %ecx /* Push second argument: argv. */
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pushl %esi /* Push first argument: argc. */
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pushl $main
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/* Call the user's main function, and exit with its value.
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But let the libc call main. */
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call __libc_start_main
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hlt /* Crash if somehow `exit' does return. */
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/* To fulfill the System V/i386 ABI we need this symbol. Yuck, it's so
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meaningless since we don't support machines < 80386. */
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.section .rodata
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.globl _fp_hw
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.long 3
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.size _fp_hw, 4
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/* Define a symbol for the first piece of initialized data. */
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.data
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.globl __data_start
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__data_start:
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.long 0
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.weak data_start
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data_start = __data_start
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