From 4fcddf8e57fa96dcf8759d95b5e427bd0cff69b5 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 26 Mar 2000 18:48:26 +0000 Subject: Update. 2000-03-24 Andreas Jaeger * Makefile (postclean): Added soversions.i. 2000-03-24 Scott Bambrough * sysdeps/arm/fpu/fpu_control.h: Define _FPU_MASK_IM, _FPU_MASK_ZM, _FPU_MASK_OM, _FPU_MASK_UM, _FPU_MASK_PM, _FPU_MASK_DM, _FPU_DEFAULT, and _FPU_IEEE. Change _FPU_RESERVED. 2000-03-24 Scott Bambrough * sysdeps/unix/sysv/linux/arm/sys/ucontext.h: New file. 2000-03-24 Roland McGrath * sysdeps/posix/getaddrinfo.c: Include for if_nametoindex. (gaih_inet): Remove unused duplicate variable. * inet/getnameinfo.c (getnameinfo): Use IFNAMSIZ, not MAXHOSTNAMELEN. Don't use __libc_sa_len, which only exists for Linux. Just handle AF_INET and AF_INET6 directly as well as AF_LOCAL, since those are the only flavors supported by this function anyway. 2000-03-24 Geoff Clare * stdlib/strfmon.c: corrected problems with missing signs and missing or extra spaces; allow for sign strings longer than one character; add padding to ensure positive and negative formats are aligned when a left precision is used. 2000-03-26 Ulrich Drepper * stdlib/random_r.c (__setstate_r): Allow RNGs of type 4. Patch by John Mizel . --- sysdeps/arm/fpu/fpu_control.h | 34 ++++++++--- sysdeps/posix/getaddrinfo.c | 3 +- sysdeps/unix/sysv/linux/arm/sys/ucontext.h | 94 ++++++++++++++++++++++++++++++ 3 files changed, 120 insertions(+), 11 deletions(-) create mode 100644 sysdeps/unix/sysv/linux/arm/sys/ucontext.h (limited to 'sysdeps') diff --git a/sysdeps/arm/fpu/fpu_control.h b/sysdeps/arm/fpu/fpu_control.h index b5338c5755..dfcfaabfcd 100644 --- a/sysdeps/arm/fpu/fpu_control.h +++ b/sysdeps/arm/fpu/fpu_control.h @@ -1,5 +1,5 @@ /* FPU control word definitions. ARM version. - Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998, 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 @@ -23,12 +23,12 @@ /* We have a slight terminology confusion here. On the ARM, the register * we're interested in is actually the FPU status word - the FPU control * word is something different (which is implementation-defined and only - * accessible from supervisor mode.) + * accessible from supervisor mode.) * * The FPSR looks like this: * * 31-24 23-16 15-8 7-0 - * | system ID | trap enable | system control | exception flags | + * | system ID | trap enable | system control | exception flags | * * We ignore the system ID bits; for interest's sake they are: * @@ -40,7 +40,7 @@ * The trap enable and exception flags are both structured like this: * * 7 - 5 4 3 2 1 0 - * | reserved | INX | UFL | OFL | DVZ | IVO | + * | reserved | INX | UFL | OFL | DVZ | IVO | * * where a `1' bit in the enable byte means that the trap can occur, and * a `1' bit in the flags byte means the exception has occurred. @@ -57,7 +57,7 @@ * * 7-5 4 3 2 1 0 * | reserved | AC | EP | SO | NE | ND | - * + * * where the bits mean * * ND - no denormalised numbers (force them all to zero) @@ -67,11 +67,27 @@ * AC - use alternate definition for C flag on compare operations */ -#define _FPU_RESERVED 0xfff0e0f0 /* These bits are reserved. */ +/* masking of interrupts */ +#define _FPU_MASK_IM 0x00010000 /* invalid operation */ +#define _FPU_MASK_ZM 0x00020000 /* divide by zero */ +#define _FPU_MASK_OM 0x00040000 /* overflow */ +#define _FPU_MASK_UM 0x00080000 /* underflow */ +#define _FPU_MASK_PM 0x00100000 /* inexact */ +#define _FPU_MASK_DM 0x00000000 /* denormalized operation */ + +/* The system id bytes cannot be changed. + Only the bottom 5 bits in the trap enable byte can be changed. + Only the bottom 5 bits in the system control byte can be changed. + Only the bottom 5 bits in the exception flags are used. + The exception flags are set by the fpu, but can be zeroed by the user. */ +#define _FPU_RESERVED 0xffe0e0e0 /* These bits are reserved. */ -/* The fdlibm code requires no interrupts for exceptions. Don't - change the rounding mode, it would break long double I/O! */ -#define _FPU_DEFAULT 0x00001000 /* Default value. */ +/* The fdlibm code requires strict IEEE double precision arithmetic, + no interrupts for exceptions, rounding to nearest. Changing the + rounding mode will break long double I/O. Turn on the AC bit, + the compiler generates code that assumes it is on. */ +#define _FPU_DEFAULT 0x00001000 /* Default value. */ +#define _FPU_IEEE 0x001f1000 /* Default + exceptions enabled. */ /* Type of the control word. */ typedef unsigned int fpu_control_t; diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index be36c6a25f..59e2cec129 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -55,6 +55,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include #include #include +#include #define GAIH_OKIFUNSPEC 0x0100 #define GAIH_EAI ~(GAIH_OKIFUNSPEC) @@ -392,8 +393,6 @@ gaih_inet (const char *name, const struct gaih_service *service, if (inet_pton (AF_INET6, namebuf, at->addr) > 0) { - int try_numericscope = 0; - if (req->ai_family == AF_UNSPEC || req->ai_family == AF_INET6) at->family = AF_INET6; else diff --git a/sysdeps/unix/sysv/linux/arm/sys/ucontext.h b/sysdeps/unix/sysv/linux/arm/sys/ucontext.h new file mode 100644 index 0000000000..6e51efec99 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/sys/ucontext.h @@ -0,0 +1,94 @@ +/* Copyright (C) 1998, 1999 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. */ + +/* System V/ARM ABI compliant context switching support. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include +#include +#include + +typedef int greg_t; + +/* Number of general registers. */ +#define NGREG 16 + +/* Container for all general registers. */ +typedef elf_gregset_t gregset_t; + +/* Number of each register is the `gregset_t' array. */ +enum +{ + R0 = 0, +#define R0 R0 + R1 = 1, +#define R1 R1 + R2 = 2, +#define R2 R2 + R3 = 3, +#define R3 R3 + R4 = 4, +#define R4 R4 + R5 = 5, +#define R5 R5 + R6 = 6, +#define R6 R6 + R7 = 7, +#define R7 R7 + R8 = 8, +#define R8 R8 + R9 = 9, +#define R9 R9 + R10 = 10, +#define R10 R10 + R11 = 11, +#define R11 R11 + R12 = 12, +#define R12 R12 + R13 = 13, +#define R13 R13 + R14 = 14, +#define R14 R14 + R15 = 15, +#define R15 R15 +}; + +/* Structure to describe FPU registers. */ +typedef elf_fpregset_t fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t gregs; + fpregset_t fpregs; + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext + { + unsigned long int uc_flags; + struct ucontext *uc_link; + __sigset_t uc_sigmask; + stack_t uc_stack; + mcontext_t uc_mcontext; + long int uc_filler[5]; + } ucontext_t; + +#endif /* sys/ucontext.h */ -- cgit v1.2.1