diff options
Diffstat (limited to 'libc/sysdeps/linux')
| -rw-r--r-- | libc/sysdeps/linux/arm/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/__longjmp.S | 40 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/bsd-_setjmp.S | 34 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/bsd-setjmp.S | 34 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/clone.S | 43 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/longjmp.S | 45 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/setjmp.S | 21 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/vfork.S | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/longjmp.c | 46 | ||||
| -rw-r--r-- | libc/sysdeps/linux/i386/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/i386/jmp-unwind.c | 29 | ||||
| -rw-r--r-- | libc/sysdeps/linux/i386/longjmp.c | 54 |
13 files changed, 199 insertions, 155 deletions
diff --git a/libc/sysdeps/linux/arm/Makefile b/libc/sysdeps/linux/arm/Makefile index 9e826aa48..5651d6d7b 100644 --- a/libc/sysdeps/linux/arm/Makefile +++ b/libc/sysdeps/linux/arm/Makefile @@ -30,7 +30,7 @@ TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine) CRT0=crt0.S CRT0_OBJ=crt0.o -SSRC=longjmp.S setjmp.S vfork.S +SSRC=__longjmp.S vfork.S clone.S setjmp.S bsd-setjmp.S bsd-_setjmp.S SOBJS=$(patsubst %.S,%.o, $(SSRC)) CSRC=inout_bwl.c brk.c diff --git a/libc/sysdeps/linux/arm/__longjmp.S b/libc/sysdeps/linux/arm/__longjmp.S new file mode 100644 index 000000000..4c12a748c --- /dev/null +++ b/libc/sysdeps/linux/arm/__longjmp.S @@ -0,0 +1,40 @@ +/* longjmp for ARM. + Copyright (C) 1997, 1998 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. + + 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. */ + +#include <features.h> +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> + + +.globl __longjmp; +.type __longjmp,%function +.align 4; +__longjmp: + mov ip, r0 /* save jmp_buf pointer */ + + movs r0, r1 /* get the return value in place */ + moveq r0, #1 /* can't let setjmp() return zero! */ + +#ifdef __UCLIBC_HAS_FLOATS__ + lfmfd f4, 4, [ip] ! /* load the floating point regs */ +#endif + + ldmia ip , {v1-v6, sl, fp, sp, pc} +.size __longjmp,.-__longjmp; diff --git a/libc/sysdeps/linux/arm/bsd-_setjmp.S b/libc/sysdeps/linux/arm/bsd-_setjmp.S new file mode 100644 index 000000000..7f092c18b --- /dev/null +++ b/libc/sysdeps/linux/arm/bsd-_setjmp.S @@ -0,0 +1,34 @@ +/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. ARM version. + Copyright (C) 1997, 1998 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. + + 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 just does a tail-call to `__sigsetjmp (ARG, 1)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> + +.globl _setjmp; +.type _setjmp,%function +.align 4; +_setjmp: + mov r1, #0 + b __sigsetjmp (PLT) +.size _setjmp,.-_setjmp; diff --git a/libc/sysdeps/linux/arm/bsd-setjmp.S b/libc/sysdeps/linux/arm/bsd-setjmp.S new file mode 100644 index 000000000..16f077a79 --- /dev/null +++ b/libc/sysdeps/linux/arm/bsd-setjmp.S @@ -0,0 +1,34 @@ +/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. ARM version. + Copyright (C) 1997, 1998 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. + + 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 just does a tail-call to `__sigsetjmp (ARG, 1)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> + +.globl setjmp; +.type setjmp,%function +.align 4; +setjmp: + mov r1, #1 + b __sigsetjmp (PLT) +.size setjmp,.-setjmp; diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S index c9a1ec23a..f417be07f 100644 --- a/libc/sysdeps/linux/arm/clone.S +++ b/libc/sysdeps/linux/arm/clone.S @@ -20,19 +20,21 @@ /* clone() is even more special than fork() as it mucks with stacks and invokes a function in the right context after its all over. */ -#include <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> +#include <asm/errno.h> +#include <sys/syscall.h> /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ - .text -ENTRY(__clone) +.text +.globl __clone; +.type __clone,%function +.align 4; +__clone: @ sanity check args cmp r0, #0 cmpne r1, #0 moveq r0, #-EINVAL - beq PLTJMP(syscall_error) + beq __syscall_error (PLT) @ insert the args onto the new stack sub r1, r1, #8 @@ -44,10 +46,10 @@ ENTRY(__clone) @ get flags mov r0, r2 @ new sp is already in r1 - swi SYS_ify(clone) + swi __NR_clone movs a1, a1 - blt PLTJMP(C_SYMBOL_NAME(__syscall_error)) - RETINSTR(movne, pc, lr) + blt __syscall_error (PLT) + movne pc, lr @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] @@ -55,8 +57,25 @@ ENTRY(__clone) ldr pc, [sp] @ and we are done, passing the return value through r0 - b PLTJMP(_exit) + b _exit (PLT) -PSEUDO_END (__clone) +__syscall_error: + /* Looks like the syscall choked -- set errno */ + ldr r3, .L4 + /* Calculate the - of the syscall result, in case we need it */ + rsb r2, r0, $0 + + /* errno = -result */ + str r2, [r9,r3] + + /* return -1 */ + mvn r0, $0 + mov pc, lr +.size __clone,.-__clone; + +.L4: .word errno + + +.globl clone; + clone = __clone -weak_alias (__clone, clone) diff --git a/libc/sysdeps/linux/arm/longjmp.S b/libc/sysdeps/linux/arm/longjmp.S deleted file mode 100644 index c21758524..000000000 --- a/libc/sysdeps/linux/arm/longjmp.S +++ /dev/null @@ -1,45 +0,0 @@ -/* longjmp for ARM. - Copyright (C) 1997, 1998 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#define _SETJMP_H -#define _ASM -#include <bits/setjmp.h> - -/* __longjmp(jmpbuf, val) */ - -.globl longjmp; -.type longjmp,#function -.align 4; \ -longjmp: - mov ip, r0 - movs r0, r1 /* get the return value in place */ - moveq r0, #1 /* can't let setjmp() return zero! */ - - ldmia ip,{v1-v6, sl, fp, sp, pc} -.size longjmp,.-longjmp; - -.weak _longjmp; - _longjmp = longjmp; - -.weak siglongjmp; - siglongjmp = longjmp; - -.weak __sigprocmask; - __sigprocmask = sigprocmask; - diff --git a/libc/sysdeps/linux/arm/setjmp.S b/libc/sysdeps/linux/arm/setjmp.S index a993f8c59..166e4efab 100644 --- a/libc/sysdeps/linux/arm/setjmp.S +++ b/libc/sysdeps/linux/arm/setjmp.S @@ -17,25 +17,24 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <features.h> #define _SETJMP_H #define _ASM #include <bits/setjmp.h> - /* Binary compatibility entry point. */ -.globl _setjmp; -.type _setjmp,#function -.align 4; -_setjmp: - mov r1, #0 - - .globl __sigsetjmp; -.type __sigsetjmp,#function +.type __sigsetjmp,%function .align 4; __sigsetjmp: /* Save registers */ - stmia r0, {v1-v6, sl, fp, sp, lr} +#ifdef __UCLIBC_HAS_FLOATS__ + sfmea f4, 4, [r0]! +#endif + stmia r0, {v1-v6, sl, fp, sp, lr} + + /* Restore pointer to jmp_buf */ + sub r0, r0, #48 /* Make a tail call to __sigjmp_save; it takes the same args. */ - B __sigjmp_save + B __sigjmp_save (PLT) .size __sigsetjmp,.-__sigsetjmp; diff --git a/libc/sysdeps/linux/arm/vfork.S b/libc/sysdeps/linux/arm/vfork.S index ccf815f12..361153214 100644 --- a/libc/sysdeps/linux/arm/vfork.S +++ b/libc/sysdeps/linux/arm/vfork.S @@ -21,7 +21,7 @@ */ #include <asm/errno.h> -#include <asm/unistd.h> +#include <sys/syscall.h> .global errno; diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile index d84648724..e4820e3f8 100644 --- a/libc/sysdeps/linux/common/Makefile +++ b/libc/sysdeps/linux/common/Makefile @@ -27,7 +27,7 @@ include $(TOPDIR)Rules.mak CSRC= waitpid.c kernel_version.c statfix.c getdnnm.c gethstnm.c \ mkfifo.c setegid.c wait.c errno.c getpagesize.c seteuid.c \ wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \ - cmsg_nxthdr.c open64.c statfix64.c statfs64.c + cmsg_nxthdr.c open64.c statfix64.c statfs64.c longjmp.c ifneq ($(strip $(EXCLUDE_BRK)),true) CSRC+=sbrk.c endif diff --git a/libc/sysdeps/linux/common/longjmp.c b/libc/sysdeps/linux/common/longjmp.c new file mode 100644 index 000000000..95c7fef48 --- /dev/null +++ b/libc/sysdeps/linux/common/longjmp.c @@ -0,0 +1,46 @@ +/* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 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. + + 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. */ + +#include <stddef.h> +#include <setjmp.h> +#include <signal.h> + + +/* Set the signal mask to the one specified in ENV, and jump + to the position specified in ENV, causing the setjmp + call there to return VAL, or 1 if VAL is 0. */ +void __libc_siglongjmp (sigjmp_buf env, int val) +{ +#if 0 + /* Perform any cleanups needed by the frames being unwound. */ + _longjmp_unwind (env, val); +#endif + + if (env[0].__mask_was_saved) + /* Restore the saved signal mask. */ + (void) sigprocmask (SIG_SETMASK, &env[0].__saved_mask, + (sigset_t *) NULL); + + /* Call the machine-dependent function to restore machine state. */ + __longjmp (env[0].__jmpbuf, val ?: 1); +} + +strong_alias (__libc_siglongjmp, __libc_longjmp) +weak_alias (__libc_siglongjmp, _longjmp) +weak_alias (__libc_siglongjmp, longjmp) +weak_alias (__libc_siglongjmp, siglongjmp) diff --git a/libc/sysdeps/linux/i386/Makefile b/libc/sysdeps/linux/i386/Makefile index 67dd89ebf..143162ccb 100644 --- a/libc/sysdeps/linux/i386/Makefile +++ b/libc/sysdeps/linux/i386/Makefile @@ -42,7 +42,7 @@ ifeq ($(UNIFIED_SYSCALL),true) endif SOBJS=$(patsubst %.S,%.o, $(SSRC)) -CSRC=brk.c longjmp.c #jmp-unwind.c +CSRC=brk.c COBJS=$(patsubst %.c,%.o, $(CSRC)) OBJS=$(SOBJS) $(COBJS) diff --git a/libc/sysdeps/linux/i386/jmp-unwind.c b/libc/sysdeps/linux/i386/jmp-unwind.c deleted file mode 100644 index 083dc74a8..000000000 --- a/libc/sysdeps/linux/i386/jmp-unwind.c +++ /dev/null @@ -1,29 +0,0 @@ -/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Stub version. - Copyright (C) 1995, 1997 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <setjmp.h> - -void -_longjmp_unwind (jmp_buf env, int val) -{ - - /* This function can perform any cleanups necessary to safely unwind the - stack frames around the current context which ENV unwinds past. */ - -} diff --git a/libc/sysdeps/linux/i386/longjmp.c b/libc/sysdeps/linux/i386/longjmp.c deleted file mode 100644 index 46e48f569..000000000 --- a/libc/sysdeps/linux/i386/longjmp.c +++ /dev/null @@ -1,54 +0,0 @@ -/* Copyright (C) 1991, 92, 94, 95, 97, 98 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <stddef.h> -#include <setjmp.h> -#define __USE_GNU -#include <signal.h> - - -#if 0 -extern void _longjmp_unwind (jmp_buf env, int val); -#endif -extern void __longjmp(__jmp_buf __env, int __val) - __attribute__ ((__noreturn__)); - -/* Set the signal mask to the one specified in ENV, and jump - to the position specified in ENV, causing the setjmp - call there to return VAL, or 1 if VAL is 0. */ -void -__uClibc_siglongjmp (sigjmp_buf env, int val) -{ -#if 0 - /* Perform any cleanups needed by the frames being unwound. */ - _longjmp_unwind (env, val); -#endif - - if (env[0].__mask_was_saved) - /* Restore the saved signal mask. */ - (void) sigprocmask (SIG_SETMASK, &env[0].__saved_mask, - (sigset_t *) NULL); - - /* Call the machine-dependent function to restore machine state. */ - __longjmp (env[0].__jmpbuf, val ?: 1); -} - -__asm__(".weak longjmp; longjmp = __uClibc_siglongjmp"); -__asm__(".weak _longjmp; _longjmp = __uClibc_siglongjmp"); -__asm__(".weak siglongjmp; siglongjmp = __uClibc_siglongjmp"); -__asm__(".weak __sigprocmask; __sigprocmask = sigprocmask"); |