diff options
Diffstat (limited to 'libc/sysdeps/linux/m68k')
| -rw-r--r-- | libc/sysdeps/linux/m68k/Makefile.arch | 6 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/__longjmp.S | 6 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/__syscall_error.c | 19 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/fcntl.h | 14 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/mman.h | 36 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/setjmp.h | 16 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/stat.h | 17 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/syscalls.h | 11 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/bits/uClibc_arch_features.h | 48 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/brk.c | 14 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/clone.S | 24 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/crt0.S | 72 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/crt0.c | 43 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/crt1.S | 108 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/ptrace.c | 34 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/syscall.c | 46 | ||||
| -rw-r--r-- | libc/sysdeps/linux/m68k/vfork.S | 11 |
17 files changed, 318 insertions, 207 deletions
diff --git a/libc/sysdeps/linux/m68k/Makefile.arch b/libc/sysdeps/linux/m68k/Makefile.arch index 2ebd602d7..14ce2e30a 100644 --- a/libc/sysdeps/linux/m68k/Makefile.arch +++ b/libc/sysdeps/linux/m68k/Makefile.arch @@ -5,12 +5,8 @@ # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. # -CSRC := ptrace.c brk.c +CSRC := brk.c __syscall_error.c syscall.c SSRC := __longjmp.S bsd-_setjmp.S bsd-setjmp.S clone.S setjmp.S vfork.S -ifneq ($(HAVE_ELF),y) -ARCH_HEADERS := float.h -endif - include $(top_srcdir)libc/sysdeps/linux/Makefile.commonarch diff --git a/libc/sysdeps/linux/m68k/__longjmp.S b/libc/sysdeps/linux/m68k/__longjmp.S index d218f2ef5..5db9e4362 100644 --- a/libc/sysdeps/linux/m68k/__longjmp.S +++ b/libc/sysdeps/linux/m68k/__longjmp.S @@ -4,11 +4,12 @@ #define _ASM #define _SETJMP_H +#include <features.h> #include <bits/setjmp.h> -.globl __longjmp; +.globl __longjmp .type __longjmp,@function -.align 4; \ +.align 4 __longjmp: moveal %sp@(4), %a0 movel %sp@(8), %d0 @@ -22,3 +23,4 @@ __longjmp: movel %a0@(JB_PC), %sp@ rts +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/m68k/__syscall_error.c b/libc/sysdeps/linux/m68k/__syscall_error.c new file mode 100644 index 000000000..5cfdead8b --- /dev/null +++ b/libc/sysdeps/linux/m68k/__syscall_error.c @@ -0,0 +1,19 @@ +/* Wrapper for setting errno. + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <features.h> + +/* This routine is jumped to by all the syscall handlers, to stash + * an error number into errno. */ +int __syscall_error(void) attribute_hidden; +int __syscall_error(void) +{ + register int err_no asm("%d0"); + __set_errno(-err_no); + return -1; +} diff --git a/libc/sysdeps/linux/m68k/bits/fcntl.h b/libc/sysdeps/linux/m68k/bits/fcntl.h index 4b41b4715..90c0a481e 100644 --- a/libc/sysdeps/linux/m68k/bits/fcntl.h +++ b/libc/sysdeps/linux/m68k/bits/fcntl.h @@ -1,5 +1,5 @@ /* O_*, F_*, FD_* bit values for Linux. - Copyright (C) 2000 Free Software Foundation, Inc. + Copyright (C) 2000, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -45,7 +45,7 @@ # define O_DIRECTORY 040000 /* Must be a directory. */ # define O_NOFOLLOW 0100000 /* Do not follow links. */ # define O_DIRECT 0200000 /* Direct disk access. */ -# define O_STREAMING 04000000/* streaming access */ +# define O_NOATIME 01000000 /* Do not set atime. */ #endif /* For now Linux has synchronisity options for data and read operations. @@ -79,7 +79,7 @@ #define F_SETLK64 13 /* Set record locking info (non-blocking). */ #define F_SETLKW64 14 /* Set record locking info (blocking). */ -#if defined __USE_BSD || defined __USE_XOPEN2K +#if defined __USE_BSD || defined __USE_UNIX98 # define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ # define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ #endif @@ -178,3 +178,11 @@ struct flock64 # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ #endif + +__BEGIN_DECLS + +/* Provide kernel hint to read ahead. */ +extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) + __THROW; + +__END_DECLS diff --git a/libc/sysdeps/linux/m68k/bits/mman.h b/libc/sysdeps/linux/m68k/bits/mman.h index 7f644b99b..6e7bdc99d 100644 --- a/libc/sysdeps/linux/m68k/bits/mman.h +++ b/libc/sysdeps/linux/m68k/bits/mman.h @@ -1,5 +1,5 @@ /* Definitions for POSIX memory map interface. Linux/m68k version. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 2000, 2003, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -34,6 +34,10 @@ #define PROT_WRITE 0x2 /* Page can be written. */ #define PROT_EXEC 0x4 /* Page can be executed. */ #define PROT_NONE 0x0 /* Page can not be accessed. */ +#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of + growsdown vma (mprotect only). */ +#define PROT_GROWSUP 0x02000000 /* Extend change to start of + growsup vma (mprotect only). */ /* Sharing types (must choose one and only one of these). */ #define MAP_SHARED 0x01 /* Share changes. */ @@ -52,11 +56,13 @@ /* These are Linux-specific. */ #ifdef __USE_MISC -# define MAP_GROWSDOWN 0x0100 /* Stack-like segment. */ -# define MAP_DENYWRITE 0x0800 /* ETXTBSY */ -# define MAP_EXECUTABLE 0x1000 /* Mark it as an executable. */ -# define MAP_LOCKED 0x2000 /* Lock the mapping. */ -# define MAP_NORESERVE 0x4000 /* Don't check for reservations. */ +# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ +# define MAP_DENYWRITE 0x00800 /* ETXTBSY */ +# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ +# define MAP_LOCKED 0x02000 /* Lock the mapping. */ +# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ +# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ +# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ #endif /* Flags to `msync'. */ @@ -74,3 +80,21 @@ # define MREMAP_MAYMOVE 1 # define MREMAP_FIXED 2 #endif + +/* Advice to `madvise'. */ +#ifdef __USE_BSD +# define MADV_NORMAL 0 /* No further special treatment. */ +# define MADV_RANDOM 1 /* Expect random page references. */ +# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define MADV_WILLNEED 3 /* Will need these pages. */ +# define MADV_DONTNEED 4 /* Don't need these pages. */ +#endif + +/* The POSIX people had to invent similar names for the same things. */ +#ifdef __USE_XOPEN2K +# define POSIX_MADV_NORMAL 0 /* No further special treatment. */ +# define POSIX_MADV_RANDOM 1 /* Expect random page references. */ +# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ +# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ +#endif diff --git a/libc/sysdeps/linux/m68k/bits/setjmp.h b/libc/sysdeps/linux/m68k/bits/setjmp.h index efad14c13..a6b0ed0f1 100644 --- a/libc/sysdeps/linux/m68k/bits/setjmp.h +++ b/libc/sysdeps/linux/m68k/bits/setjmp.h @@ -1,5 +1,5 @@ /* Copyright (C) 2002, David McCullough <davidm@snapgear.com> */ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997,1998,2005,2006 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -25,13 +25,17 @@ # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." #endif -#ifndef _ASM +#ifndef _ASM typedef struct { - unsigned long __dregs[6]; /* save d2 - d7 */ - unsigned long __aregs[6]; /* save a2 - a7 */ - unsigned long __pc; /* the return address */ + /* There are eight 4-byte data registers, but D0 is not saved. */ + long int __dregs[7]; + + /* There are six 4-byte address registers, plus the FP and SP. */ + int *__aregs[6]; + int *__fp; + int *__sp; #if defined __HAVE_68881__ || defined __HAVE_FPU__ /* There are eight floating point registers which @@ -41,7 +45,7 @@ typedef struct } __jmp_buf[1]; -#endif /* _ASM */ +#endif #define JB_REGS 0 #define JB_DREGS 0 diff --git a/libc/sysdeps/linux/m68k/bits/stat.h b/libc/sysdeps/linux/m68k/bits/stat.h index 213dbe267..a435240cd 100644 --- a/libc/sysdeps/linux/m68k/bits/stat.h +++ b/libc/sysdeps/linux/m68k/bits/stat.h @@ -1,4 +1,5 @@ -/* Copyright (C) 1992,95,96,97,98,99,2000,2001 Free Software Foundation, Inc. +/* Copyright (C) 1992,95,96,97,98,99,2000,2001,2002 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -61,11 +62,11 @@ struct stat __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */ #endif __time_t st_atime; /* Time of last access. */ - unsigned long int __unused1; + unsigned long int st_atimensec; /* Nscecs of last access. */ __time_t st_mtime; /* Time of last modification. */ - unsigned long int __unused2; + unsigned long int st_mtimensec; /* Nsecs of last modification. */ __time_t st_ctime; /* Time of last status change. */ - unsigned long int __unused3; + unsigned long int st_ctimensec; /* Nsecs of last status change. */ #ifndef __USE_FILE_OFFSET64 unsigned long int __unused4; unsigned long int __unused5; @@ -92,11 +93,11 @@ struct stat64 __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */ __time_t st_atime; /* Time of last access. */ - unsigned long int __unused1; + unsigned long int st_atimensec; /* Nscecs of last access. */ __time_t st_mtime; /* Time of last modification. */ - unsigned long int __unused2; + unsigned long int st_mtimensec; /* Nsecs of last modification. */ __time_t st_ctime; /* Time of last status change. */ - unsigned long int __unused3; + unsigned long int st_ctimensec; /* Nsecs of last status change. */ __ino64_t st_ino; /* File serial number. */ }; #endif @@ -104,6 +105,8 @@ struct stat64 /* Tell code we have these members. */ #define _STATBUF_ST_BLKSIZE #define _STATBUF_ST_RDEV +/* Nanosecond resolution time values are supported. */ +#define _STATBUF_ST_NSEC /* Encoding of the file mode. */ diff --git a/libc/sysdeps/linux/m68k/bits/syscalls.h b/libc/sysdeps/linux/m68k/bits/syscalls.h index 05bc7b675..284112e31 100644 --- a/libc/sysdeps/linux/m68k/bits/syscalls.h +++ b/libc/sysdeps/linux/m68k/bits/syscalls.h @@ -4,14 +4,19 @@ # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif +#include <errno.h> + /* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel * header files. It also defines the traditional `SYS_<name>' macros for older * programs. */ #include <bits/sysnum.h> -#ifndef __set_errno -# define __set_errno(val) (*__errno_location ()) = (val) -#endif +/* m68k headers does stupid stuff with __NR_iopl / __NR_vm86: + * #define __NR_iopl not supported + * #define __NR_vm86 not supported + */ +#undef __NR_iopl +#undef __NR_vm86 #ifndef __ASSEMBLER__ diff --git a/libc/sysdeps/linux/m68k/bits/uClibc_arch_features.h b/libc/sysdeps/linux/m68k/bits/uClibc_arch_features.h new file mode 100644 index 000000000..a94803749 --- /dev/null +++ b/libc/sysdeps/linux/m68k/bits/uClibc_arch_features.h @@ -0,0 +1,48 @@ +/* + * Track misc arch-specific features that aren't config options + */ + +#ifndef _BITS_UCLIBC_ARCH_FEATURES_H +#define _BITS_UCLIBC_ARCH_FEATURES_H + +/* instruction used when calling abort() to kill yourself */ +#if defined(__mc68000__) +# define __UCLIBC_ABORT_INSTRUCTION__ ".long 0xffffffff" +#else /* defined(__m68k__) */ +# define __UCLIBC_ABORT_INSTRUCTION__ "illegal" +#endif + +/* can your target use syscall6() for mmap ? */ +#undef __UCLIBC_MMAP_HAS_6_ARGS__ + +/* does your target use syscall4() for truncate64 ? (32bit arches only) */ +#undef __UCLIBC_TRUNCATE64_HAS_4_ARGS__ + +/* does your target have a broken create_module() ? */ +#define __UCLIBC_BROKEN_CREATE_MODULE__ + +/* does your target have to worry about older [gs]etrlimit() ? */ +#define __UCLIBC_HANDLE_OLDER_RLIMIT__ + +/* does your target prefix all symbols with an _ ? */ +#define __UCLIBC_NO_UNDERSCORES__ + +/* does your target have an asm .set ? */ +#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ + +/* define if target doesn't like .global */ +#undef __UCLIBC_ASM_GLOBAL_DIRECTIVE__ + +/* define if target supports .weak */ +#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ + +/* define if target supports .weakext */ +#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ + +/* needed probably only for ppc64 */ +#undef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__ + +/* define if target supports IEEE signed zero floats */ +#define __UCLIBC_HAVE_SIGNED_ZERO__ + +#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */ diff --git a/libc/sysdeps/linux/m68k/brk.c b/libc/sysdeps/linux/m68k/brk.c index 4c33549cc..b627f6400 100644 --- a/libc/sysdeps/linux/m68k/brk.c +++ b/libc/sysdeps/linux/m68k/brk.c @@ -1,13 +1,23 @@ /* consider this code LGPL - davidm */ +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ #include <unistd.h> #include <sys/syscall.h> #include <errno.h> +libc_hidden_proto(brk) + /* This must be initialized data because commons can't have aliases. */ +extern void *__curbrk; +libc_hidden_proto(__curbrk) void * __curbrk = 0; +libc_hidden_data_def(__curbrk) -int attribute_hidden __brk (void *addr) +int brk (void *addr) { void *newbrk; @@ -28,4 +38,4 @@ int attribute_hidden __brk (void *addr) return 0; } -strong_alias(__brk,brk) +libc_hidden_def(brk) diff --git a/libc/sysdeps/linux/m68k/clone.S b/libc/sysdeps/linux/m68k/clone.S index 916488146..2735bcba0 100644 --- a/libc/sysdeps/linux/m68k/clone.S +++ b/libc/sysdeps/linux/m68k/clone.S @@ -13,9 +13,9 @@ .text .align 4 -.type __clone,@function -.globl __clone; -__clone: +.type clone,@function +.globl clone; +clone: /* Sanity check arguments. */ movel #-EINVAL, %d0 movel 4(%sp), %d1 /* no NULL function pointers */ @@ -55,17 +55,6 @@ __clone: rts -__syscall_error: - negl %d0 - movel %d0, %sp@- - lea __errno_location-.-8, %a0 - jsr %pc@(%a0) - movel %d0, %a0 - movel %sp@+, %a0@ - moveq #-1, %d0 - - rts - thread_start: /*subl %fp, %fp*/ /* terminate the stack frame */ jsr (%a0) @@ -73,10 +62,3 @@ thread_start: movel #__NR_exit, %d0 trap #0 /*jsr exit*/ - -#if defined(__HAVE_ELF__) - .weak clone - clone = __clone -#else - .set clone,__clone -#endif diff --git a/libc/sysdeps/linux/m68k/crt0.S b/libc/sysdeps/linux/m68k/crt0.S deleted file mode 100644 index 44aca7fd1..000000000 --- a/libc/sysdeps/linux/m68k/crt0.S +++ /dev/null @@ -1,72 +0,0 @@ -/* Copyright (C) 1991, 1992 Free Software Foundation, Inc. - -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -/* - * NOTE: this file works for PIC and non-PIC code. Be very careful how - * you modify it ! - */ - -#include <features.h> - - .global _start - .global __exit - .global atexit - .global main - - .text - - nop - nop -_start: /* put here so that references to _start work with elf-PIC */ - - movea.l %d5, %a5 /* uClinux passes in data segment here */ -/* - * argc, argv and envp are on the stack, just call to main - */ - lea __uClibc_main-.-8, %a0 /* call uClibc main */ - jsr %pc@(%a0) - - /* If that didn't kill us, ... */ -__exit: - move.l %sp@+,%d1 - moveq #1,%d0 /* __NR_exit */ - trap #0 - -/* - * this was needed for gcc/g++-builds, atexit was not getting included - * for some stupid reason, this gets us a compiler - */ -empty_func: - rts -#if defined(__HAVE_ELF__) - .weak atexit - atexit = empty_func -#else - .set atexit,empty_func -#endif - - -/* Define a symbol for the first piece of initialized data. */ - .data - .globl __data_start -__data_start: - .long 0 - .weak data_start - data_start = __data_start - diff --git a/libc/sysdeps/linux/m68k/crt0.c b/libc/sysdeps/linux/m68k/crt0.c deleted file mode 100644 index 74601ec75..000000000 --- a/libc/sysdeps/linux/m68k/crt0.c +++ /dev/null @@ -1,43 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* uClibc/sysdeps/linux/m68k/crt0.S - * Pull stuff off the stack and get uClibc moving. - * - * Copyright (C) 2000,2001 by Erik Andersen <andersen@uclibc.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU Library General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License - * for more details. - * - * You should have received a copy of the GNU Library General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/* Stick in a dummy reference to main(), so that if an application - * is linking when the main() function is in a static library (.a) - * we can be sure that main() actually gets linked in */ -extern void main(int argc,void *argv,void *envp); -void (*mainp)(int argc,void *argv,void *envp) = main; - -extern void __uClibc_main(int argc,void *argv,void *envp); - -void _start(unsigned int first_arg) -{ - unsigned int argc; - char **argv, **envp; - unsigned long *stack; - - stack = (unsigned long*) &first_arg; - argc = *(stack - 1); - argv = (char **) stack; - envp = (char **)stack + argc + 1; - - __uClibc_main(argc, argv, envp); -} - diff --git a/libc/sysdeps/linux/m68k/crt1.S b/libc/sysdeps/linux/m68k/crt1.S new file mode 100644 index 000000000..ee25e48eb --- /dev/null +++ b/libc/sysdeps/linux/m68k/crt1.S @@ -0,0 +1,108 @@ +/* Startup code compliant to the ELF m68k ABI. + Copyright (C) 1996, 1997, 1998, 2001, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file with other + programs, and to distribute those programs without any restriction + coming from the use of this file. (The GNU Lesser General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into another program.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* This is the canonical entry point, usually the first thing in the text + segment. The SVR4/m68k ABI says that when the entry point runs, + most registers' values are unspecified, except for: + + %a1 Contains a function pointer to be registered with `atexit'. + This is how the dynamic linker arranges to have DT_FINI + functions called for shared libraries that have been loaded + before this code runs. + + %sp The stack contains the arguments and environment: + 0(%sp) argc + 4(%sp) argv[0] + ... + (4*argc)(%sp) NULL + (4*(argc+1))(%sp) envp[0] + ... + NULL +*/ + +#include <features.h> + + .text + .type _init,%function + .type _fini,%function +#ifndef __UCLIBC_CTOR_DTOR__ + .weak _init + .weak _fini +#endif + .globl _start + .type _start,@function +_start: + /* Clear the frame pointer. The ABI suggests this be done, to mark + the outermost frame obviously. */ + sub.l %fp, %fp + + /* 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. */ + move.l (%sp)+, %d0 /* Pop the argument count. */ + move.l %sp, %a0 /* The argument vector starts just at the + current stack top. */ + + /* Provide the highest stack address to the user code (for stacks + which grow downward). */ + pea (%sp) + + pea (%a1) /* Push address of the shared library + termination function. */ + + /* Push the address of our own entry points to `.fini' and + `.init'. */ + pea _fini + pea _init + + pea (%a0) /* Push second argument: argv. */ + move.l %d0, -(%sp) /* Push first argument: argc. */ + + pea main + + /* Call the user's main function, and exit with its value. But + let the libc call main. */ + jbsr __uClibc_main + + illegal /* Crash if somehow `exit' does return. */ + +/* Define a symbol for the first piece of initialized data. */ + .data + .globl __data_start +__data_start: + .long 0 + .weak data_start + data_start = __data_start diff --git a/libc/sysdeps/linux/m68k/ptrace.c b/libc/sysdeps/linux/m68k/ptrace.c deleted file mode 100644 index e595a6ecd..000000000 --- a/libc/sysdeps/linux/m68k/ptrace.c +++ /dev/null @@ -1,34 +0,0 @@ - -#include <errno.h> -#include <asm/ptrace.h> -#include <sys/syscall.h> - -int -ptrace(int request, int pid, int addr, int data) -{ - long ret; - long res; - if (request > 0 && request < 4) data = (int)&ret; - - - __asm__ volatile ("movel %1,%/d0\n\t" - "movel %2,%/d1\n\t" - "movel %3,%/d2\n\t" - "movel %4,%/d3\n\t" - "movel %5,%/d4\n\t" - "trap #0\n\t" - "movel %/d0,%0" - :"=g" (res) - :"i" (__NR_ptrace), "g" (request), "g" (pid), - "g" (addr), "g" (data) : "%d0", "%d1", "%d2", "%d3", "%d4"); - - if (res >= 0) { - if (request > 0 && request < 4) { - __set_errno(0); - return (ret); - } - return (int) res; - } - __set_errno(-res); - return -1; -} diff --git a/libc/sysdeps/linux/m68k/syscall.c b/libc/sysdeps/linux/m68k/syscall.c new file mode 100644 index 000000000..f35702a48 --- /dev/null +++ b/libc/sysdeps/linux/m68k/syscall.c @@ -0,0 +1,46 @@ +/* syscall for m68k/uClibc + * + * Copyright (C) 2005-2006 by Christian Magnusson <mag@mag.cx> + * Copyright (C) 2005-2006 Erik Andersen <andersen@uclibc.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Library General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License + * for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <features.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/syscall.h> + +long syscall(long sysnum, long a, long b, long c, long d, long e, long f); +long syscall(long sysnum, long a, long b, long c, long d, long e, long f) +{ + long __res; + __asm__ __volatile__ ( + "movel %7, %%a0\n\t" + "movel %6, %%d5\n\t" + "movel %5, %%d4\n\t" + "movel %4, %%d3\n\t" + "movel %3, %%d2\n\t" + "movel %2, %%d1\n\t" + "movel %1, %%d0\n\t" + "trap #0\n\t" + "movel %%d0, %0" + : "=g" (__res) + : "g" (sysnum), + "g" ((long)a), "g" ((long)b), "g" ((long)c), + "g" ((long)d), "g" ((long)e), "g" ((long)f) + : "cc", "%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%a0"); + __syscall_return(long,__res); +} diff --git a/libc/sysdeps/linux/m68k/vfork.S b/libc/sysdeps/linux/m68k/vfork.S index e58b9e949..56d57f73c 100644 --- a/libc/sysdeps/linux/m68k/vfork.S +++ b/libc/sysdeps/linux/m68k/vfork.S @@ -1,3 +1,9 @@ +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + #include <features.h> #include <asm/unistd.h> @@ -12,10 +18,8 @@ .align 2 .globl errno .globl __vfork -#ifdef __HAVE_ELF__ .hidden __vfork .type __vfork,@function -#endif __vfork: movl %sp@+, %a1 /* save the return address for later */ @@ -37,4 +41,5 @@ fix_errno: jmp %a1@ /* don't return, just jmp directly */ .size __vfork,.-__vfork -strong_alias(__vfork,vfork) +weak_alias(__vfork,vfork) +libc_hidden_weak(vfork) |