From 8f86b8a1977128e2795737fed2577b377cc2b15e Mon Sep 17 00:00:00 2001 From: "Peter S. Mazinger" Date: Sun, 13 Mar 2011 20:10:13 +0100 Subject: move *longjmp related prototypes to setjmp.h Provide common prototypes for __longjmp, __libc_longjmp, __libc_siglongjmp _longjmp_unwind, __libc_unwind_longjmp in setjmp.h in preparation for use in LT new Add __longjmp to h8300 and i960 Make common longjmp.c good for NPTL Guard _longjmp_unwind use in sh's longjmp.c for NPTL (I think sh could use the common one) Remove unneeded attribute_noreturn, prototype provides it already Signed-off-by: Peter S. Mazinger Signed-off-by: Bernhard Reutner-Fischer --- libc/sysdeps/linux/common/longjmp.c | 9 ------- libc/sysdeps/linux/h8300/__longjmp.S | 2 ++ libc/sysdeps/linux/i960/setjmp.S | 2 ++ libc/sysdeps/linux/sh/longjmp.c | 49 ++++++++++++++++++++++++++++++++++++ 4 files changed, 53 insertions(+), 9 deletions(-) create mode 100644 libc/sysdeps/linux/sh/longjmp.c (limited to 'libc/sysdeps/linux') diff --git a/libc/sysdeps/linux/common/longjmp.c b/libc/sysdeps/linux/common/longjmp.c index f3448bc6f..e9fee84ec 100644 --- a/libc/sysdeps/linux/common/longjmp.c +++ b/libc/sysdeps/linux/common/longjmp.c @@ -20,15 +20,6 @@ #include #include - -extern void __longjmp (__jmp_buf __env, int __val) attribute_noreturn; -libc_hidden_proto(__longjmp) - -#ifdef __UCLIBC_HAS_THREADS_NATIVE__ -extern void _longjmp_unwind (jmp_buf env, int val); -#endif - -extern __typeof(longjmp) __libc_longjmp 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. */ diff --git a/libc/sysdeps/linux/h8300/__longjmp.S b/libc/sysdeps/linux/h8300/__longjmp.S index 5cffa3e5f..eb433df23 100644 --- a/libc/sysdeps/linux/h8300/__longjmp.S +++ b/libc/sysdeps/linux/h8300/__longjmp.S @@ -20,3 +20,5 @@ ___longjmp: mov.l @er0+,er3 ; return PC adds #4,sp ; adjust return stack jmp @er3 + +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/i960/setjmp.S b/libc/sysdeps/linux/i960/setjmp.S index 2133ef557..2525f55d3 100644 --- a/libc/sysdeps/linux/i960/setjmp.S +++ b/libc/sysdeps/linux/i960/setjmp.S @@ -122,3 +122,5 @@ ___longjmp: mov 1, g0 /* return 1 by default */ 0: ret /* return to caller of __sigsetjmp */ + +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/sh/longjmp.c b/libc/sysdeps/linux/sh/longjmp.c new file mode 100644 index 000000000..e410f054f --- /dev/null +++ b/libc/sysdeps/linux/sh/longjmp.c @@ -0,0 +1,49 @@ +/* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 Free Software Foundation, Inc. + Copyright (C) 2001 Hewlett-Packard Australia + + 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 + + Derived in part from the Linux-8086 C library, the GNU C Library, and several + other sundry sources. Files within this library are copyright by their + respective copyright holders. +*/ + +#include +#include +#include + +/* 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) +{ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + /* 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 ((char *) env[0].__jmpbuf, val ?: 1); +} + +__asm__(".weak longjmp; longjmp = __libc_siglongjmp"); +__asm__(".weak _longjmp; _longjmp = __libc_siglongjmp"); +__asm__(".weak siglongjmp; siglongjmp = __libc_siglongjmp"); +strong_alias(__libc_siglongjmp, __libc_longjmp) -- cgit v1.2.3