diff options
Diffstat (limited to 'sysdeps/s390/bits')
| -rw-r--r-- | sysdeps/s390/bits/byteswap.h | 86 | ||||
| -rw-r--r-- | sysdeps/s390/bits/endian.h | 7 | ||||
| -rw-r--r-- | sysdeps/s390/bits/huge_val.h | 73 | ||||
| -rw-r--r-- | sysdeps/s390/bits/setjmp.h | 52 | ||||
| -rw-r--r-- | sysdeps/s390/bits/string.h | 140 |
5 files changed, 358 insertions, 0 deletions
diff --git a/sysdeps/s390/bits/byteswap.h b/sysdeps/s390/bits/byteswap.h new file mode 100644 index 0000000000..ad20e97dc6 --- /dev/null +++ b/sysdeps/s390/bits/byteswap.h @@ -0,0 +1,86 @@ +/* Macros to swap the order of bytes in integer values. s390 version. + Copyright (C) 2000 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. */ + +#if !defined _BYTESWAP_H && !defined _NETINET_IN_H +# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead." +#endif + +#define __bswap_constant_16(x) \ + ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) + +/* Swap bytes in 16 bit value. */ +#if defined __GNUC__ && __GNUC__ >= 2 +# define __bswap_16(x) \ + (__extension__ \ + ({ unsigned short int __v; \ + if (__builtin_constant_p (x)) \ + __v = __bswap_constant_16 (x); \ + else { \ + unsigned short int __tmp = (unsigned short int) (x); \ + __asm__ __volatile__ ( \ + "sr %0,%0\n" \ + "la 1,%1\n" \ + "icm %0,2,1(1)\n" \ + "ic %0,0(1)" \ + : "=&d" (__v) : "m" (__tmp) : "1"); \ + } \ + __v; })) +#else +/* This is better than nothing. */ +#define __bswap_16(x) __bswap_constant_16 (x) +#endif + +/* Swap bytes in 32 bit value. */ +#define __bswap_constant_32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) + +#if defined __GNUC__ && __GNUC__ >= 2 +# define __bswap_32(x) \ + (__extension__ \ + ({ unsigned int __v; \ + if (__builtin_constant_p (x)) \ + __v = __bswap_constant_32 (x); \ + else { \ + unsigned int __tmp = (unsigned int) (x); \ + __asm__ __volatile__ ( \ + "la 1,%1\n" \ + "icm %0,8,3(1)\n" \ + "icm %0,4,2(1)\n" \ + "icm %0,2,1(1)\n" \ + "ic %0,0(1)" \ + : "=&d" (__v) : "m" (__tmp) : "1"); \ + } \ + __v; })) +#else +# define __bswap_32(x) __bswap_constant_32 (x) +#endif + +#if defined __GNUC__ && __GNUC__ >= 2 +/* Swap bytes in 64 bit value. */ +# define __bswap_64(x) \ + __extension__ \ + ({ union { unsigned long long int __ll; \ + unsigned long int __l[2]; } __w, __r; \ + __w.__ll = (x); \ + __r.__l[0] = __bswap_32 (__w.__l[1]); \ + __r.__l[1] = __bswap_32 (__w.__l[0]); \ + __r.__ll; }) +#endif diff --git a/sysdeps/s390/bits/endian.h b/sysdeps/s390/bits/endian.h new file mode 100644 index 0000000000..ac27f0119a --- /dev/null +++ b/sysdeps/s390/bits/endian.h @@ -0,0 +1,7 @@ +/* s390 is big-endian */ + +#ifndef _ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif + +#define __BYTE_ORDER __BIG_ENDIAN diff --git a/sysdeps/s390/bits/huge_val.h b/sysdeps/s390/bits/huge_val.h new file mode 100644 index 0000000000..0c8264c90f --- /dev/null +++ b/sysdeps/s390/bits/huge_val.h @@ -0,0 +1,73 @@ +/* `HUGE_VAL' constants for s390 (where it is infinity). + Used by <stdlib.h> and <math.h> functions for overflow. + Copyright (C) 2000 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/bits/setjmp.h b/sysdeps/s390/bits/setjmp.h new file mode 100644 index 0000000000..e778e9c6d5 --- /dev/null +++ b/sysdeps/s390/bits/setjmp.h @@ -0,0 +1,52 @@ +/* Copyright (C) 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 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 the machine-dependent type `jmp_buf'. IBM s390 version. */ + +#ifndef __S390_SETJMP_H__ +#define __S390_SETJMP_H__ + +#define JB_GPR6 0 +#define JB_GPR7 1 +#define JB_GPR8 2 +#define JB_GPR9 3 +#define JB_GPR10 4 +#define JB_GPR11 5 +#define JB_GPR12 6 +#define JB_GPR13 7 +#define JB_GPR14 8 +#define JB_GPR15 9 + +#ifndef _ASM + +typedef struct { + /* We save registers 6-15 */ + long int gregs[10]; + + /* We save fpu registers 4 and 6 */ + long long fpregs[2]; +} __jmp_buf[1]; + +#endif + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((int) (address) < (jmpbuf)->gregs[JB_GPR15]) + +#endif /* __S390_SETJMP_H__ */ diff --git a/sysdeps/s390/bits/string.h b/sysdeps/s390/bits/string.h new file mode 100644 index 0000000000..4aeb146f3e --- /dev/null +++ b/sysdeps/s390/bits/string.h @@ -0,0 +1,140 @@ +/* Optimized, inlined string functions. s390 version. + Copyright (C) 2000 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 _STRING_H +# error "Never use <bits/string.h> directly; include <string.h> instead." +#endif + +/* The s390 processors can access unaligned multi-byte variables. */ +#define _STRING_ARCH_unaligned 1 + + +/* We only provide optimizations if the user selects them and if + GNU CC is used. */ +#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \ + && defined __GNUC__ && __GNUC__ >= 2 + +#ifdef __cplusplus +# define __STRING_INLINE inline +#else +# define __STRING_INLINE extern __inline +#endif + +#define _HAVE_STRING_ARCH_strlen 1 +__STRING_INLINE size_t +strlen (__const char *__str) +{ + size_t __len; + + __asm__ __volatile__ (" sr 0,0\n" + " lr %0,%1\n" + "0: srst 0,%0\n" + " jo 0b\n" + " lr %0,0\n" + " sr %0,%1" + : "=&a" (__len) : "a" (__str) + : "cc", "0" ); + return __len; +} + +/* Copy SRC to DEST. */ +#define _HAVE_STRING_ARCH_strcpy 1 +__STRING_INLINE char * +strcpy (char *__dest, __const char *__src) +{ + char *tmp = __dest; + + __asm__ __volatile__ (" sr 0,0\n" + "0: mvst %0,%1\n" + " jo 0b" + : "+&a" (__dest), "+&a" (__src) : + : "cc", "memory", "0" ); + return tmp; +} + +#define _HAVE_STRING_ARCH_strncpy 1 +__STRING_INLINE char * +strncpy (char *__dest, __const char *__src, size_t __n) +{ + char *tmp = __dest; + + if (__n <= 0) + return tmp; + __asm__ __volatile (" slr %0,%1\n" + "0: icm 0,1,0(%1)\n" + " stc 0,0(%0,%1)\n" + " jz 2f\n" + " la %1,1(%1)\n" + " brct %2,0b\n" + " j 3f\n" + "1: la %1,1(%1)\n" + " stc 0,0(%0,%1)\n" + "2: brct %2,1b\n" + "3:" + : "+&a" (__dest), "+&a" (__src), "+&d" (__n) : + : "cc", "memory", "0" ); + return tmp; +} + +/* Append SRC onto DEST. */ +#define _HAVE_STRING_ARCH_strcat 1 +__STRING_INLINE char * +strcat(char *__dest, const char *__src) +{ + char *tmp = __dest; + + __asm__ __volatile__ (" sr 0,0\n" + "0: srst 0,%0\n" + " jo 0b\n" + " lr %0,0\n" + " sr 0,0\n" + "1: mvst %0,%1\n" + " jo 1b" + : "+&a" (__dest), "+&a" (__src) : + : "cc", "memory", "0" ); + return tmp; +} + +/* Append no more than N characters from SRC onto DEST. */ +#define _HAVE_STRING_ARCH_strncat 1 +__STRING_INLINE char * +strncat (char *__dest, __const char *__src, size_t __n) +{ + char *tmp = __dest; + + if (__n <= 0) + return tmp; + __asm__ __volatile__ (" sr 0,0\n" + "0: srst 0,%0\n" + " jo 0b\n" + " lr %0,0\n" + " slr %0,%1\n" + "1: icm 0,1,0(%1)\n" + " stc 0,0(%0,%1)\n" + " jz 2f\n" + " la %1,1(%1)\n" + " brct %2,1b\n" + "2:" + : "+&a" (__dest), "+&a" (__src), "+&d" (__n) : + : "cc", "memory", "0" ); + return tmp; +} + +#endif /* Use string inlines && GNU CC. */ |