diff options
| -rw-r--r-- | ChangeLog | 9 | ||||
| -rw-r--r-- | NEWS | 5 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/s390/s390-32/pt-machine.h (renamed from linuxthreads/sysdeps/s390/pt-machine.h) | 7 | ||||
| -rw-r--r-- | sysdeps/s390/bits/huge_val.h | 69 | ||||
| -rw-r--r-- | sysdeps/s390/ffs.c | 68 |
5 files changed, 156 insertions, 2 deletions
@@ -1,3 +1,12 @@ +2001-03-16 Martin Schwidefsky <schwidefsky@de.ibm.com> + + * sysdeps/s390/s390-64/bits/huge_val.h: Move to... + * sysdeps/s390/bits/huge_val.h: ...here. + * sysdeps/s390/s390-32/bit/huge_val.h: Remove. + * sysdeps/s390/s390-64/ffs.c: Move to... + * sysdeps/s390/ffs.c: ...here. + * sysdeps/s390/s390-32/ffs.c: Remove. + 2001-03-16 Jakub Jelinek <jakub@redhat.com> * elf/ldconfig.c (search_dir): Remove bogus diagnostic, instead @@ -1,4 +1,4 @@ -GNU C Library NEWS -- history of user-visible changes. 2001-3-11 +GNU C Library NEWS -- history of user-visible changes. 2001-3-16 Copyright (C) 1992-1999, 2000, 2001 Free Software Foundation, Inc. See the end for copying conditions. @@ -24,6 +24,9 @@ Version 2.2.3 * An asynchronous name lookup library was added. The interface is designed after POSIX AIO. The proposal was circulated beforehand to get comments. No negative ones came in. Implemented by Ulrich Drepper. + +* Port to S390/64bit contributed by Martin Schwidefsky + <schwidefsky@de.ibm.com>. Version 2.2.2 diff --git a/linuxthreads/sysdeps/s390/pt-machine.h b/linuxthreads/sysdeps/s390/s390-32/pt-machine.h index d7ccf296e3..3afc9d5d60 100644 --- a/linuxthreads/sysdeps/s390/pt-machine.h +++ b/linuxthreads/sysdeps/s390/s390-32/pt-machine.h @@ -1,6 +1,6 @@ /* Machine-dependent pthreads configuration and inline functions. S390 version. - Copyright (C) 1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). This file is part of the GNU C Library. @@ -66,6 +66,11 @@ register char * stack_pointer __asm__ ("15"); #define THREAD_SETMEM(descr, member, value) THREAD_SELF->member = (value) #define THREAD_SETMEM_NC(descr, member, value) THREAD_SELF->member = (value) +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 8*1024*1024 /* Compare-and-swap for semaphores. */ diff --git a/sysdeps/s390/bits/huge_val.h b/sysdeps/s390/bits/huge_val.h new file mode 100644 index 0000000000..252749b292 --- /dev/null +++ b/sysdeps/s390/bits/huge_val.h @@ -0,0 +1,69 @@ +/* `HUGE_VAL' constants for S/390 (where it is infinity). + Used by <stdlib.h> and <math.h> functions for overflow. + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). + 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. */ + +#ifndef _MATH_H +# error "Never use <bits/huge_val.h> directly; include <math.h> instead." +#endif + +#include <features.h> + +/* IEEE positive infinity (-HUGE_VAL is negative infinity). */ + +#if __GNUC_PREREQ(2,96) +# define HUGE_VAL (__extension__ 0x1.0p2047) +#else +# define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } + +# define __huge_val_t union { unsigned char __c[8]; double __d; } +# ifdef __GNUC__ +# define HUGE_VAL (__extension__ \ + ((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d) +# else /* Not GCC. */ +static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; +# define HUGE_VAL (__huge_val.__d) +# endif /* GCC. */ +#endif /* GCC 2.95 */ + + +/* ISO C 99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */ + +#ifdef __USE_ISOC99 + +# if __GNUC_PREREQ(2,96) +# define HUGE_VALF (__extension__ 0x1.0p255f) +# define HUGE_VALL (__extension__ 0x1.0p255f) +# else +# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 } +# define __huge_valf_t union { unsigned char __c[4]; float __f; } +# ifdef __GNUC__ +# define HUGE_VALF (__extension__ \ + ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f) +# else /* Not GCC. */ +static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; +# define HUGE_VALF (__huge_valf.__f) +# endif /* GCC. */ + +/* On 390 there is no 'long double' format. Make it the same as 'double' */ +# define HUGE_VALL HUGE_VAL + +# endif /* GCC 2.95 */ + +#endif /* __USE_ISOC99. */ diff --git a/sysdeps/s390/ffs.c b/sysdeps/s390/ffs.c new file mode 100644 index 0000000000..048913defb --- /dev/null +++ b/sysdeps/s390/ffs.c @@ -0,0 +1,68 @@ +/* ffs -- find first set bit in a word, counted from least significant end. + S/390 version. + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). + 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 ffsl __something_else +#include <string.h> + +#undef ffs + +/* ffs: find first bit set. This is defined the same way as + the libc and compiler builtin ffs routines, therefore + differs in spirit from the above ffz (man ffs). */ + +int +__ffs (x) + int x; +{ + int r; + + if (x == 0) + return 0; + __asm__(" lr %%r1,%1\n" + " sr %0,%0\n" + " tml %%r1,0xFFFF\n" + " jnz 0f\n" + " ahi %0,16\n" + " srl %%r1,16\n" + "0: tml %%r1,0x00FF\n" + " jnz 1f\n" + " ahi %0,8\n" + " srl %%r1,8\n" + "1: tml %%r1,0x000F\n" + " jnz 2f\n" + " ahi %0,4\n" + " srl %%r1,4\n" + "2: tml %%r1,0x0003\n" + " jnz 3f\n" + " ahi %0,2\n" + " srl %%r1,2\n" + "3: tml %%r1,0x0001\n" + " jnz 4f\n" + " ahi %0,1\n" + "4:" + : "=&d" (r) : "d" (x) : "cc", "1" ); + return r+1; +} + +weak_alias (__ffs, ffs) +#undef ffsl +weak_alias (__ffs, ffsl) + |