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f41c80910d
1997-08-24 12:24 Ulrich Drepper <drepper@cygnus.com> * configure.in (INSTALL): Quote `$'. * libc.map: Add __xpg_basename. * csu/Makefile (initfini.s): Disable optimization. * elf/dl-deps.c: Implement handling of DL_FILTER. * elf/dl-load.c (_dl_init_paths): Add error check. * intl/finddomain.c (_nl_find_domain): Correct comment. * intl/localealias.c: Include <bits/libc-lock.h> not <libc-lock.h>. * libio/stdio.h: Make {,v}snprintf available if __USE_BSD. Change extern inline functions to work correctly in C++. * locale/iso-4217.def: Update for more recent ISO 4217 version. * locale/loadlocale.c (_nl_load_locale): Add cast. * manual/message.texi: Finish gettext section. * posix/getopt_init.c: Don't use relative #include path. (__getopt_clean_environment): Change function to take pointer to environment as argument. Optimize generation of test string a bit. * sysdeps/unix/sysv/linux/init-first.c: Call __getopt_clean_environment with additional argument. * poisx/glob.c: Add prototype for next_brace_sub. * sysdeps/generic/dl-sysdep.c: Recognize AT_BASE value on auxiliary vector. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Rewrite to not generate relocation entry. Suggested by Richard Henderson. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (elf_machine_runtime_setup): Add .aligns. * sysdeps/i386/fpu/fraiseexcpt.c: Add volatile to asms. * sysdeps/i386/fpu/bits/mathinline.h: Partially undo change of 1997-08-14 03:14. gcc 2.7.2* is really broken in some aspects. * sysdeps/standalone/i386/i386.h: Clean up asm statements a bit. * sysdeps/standalone/i960/i960ca.h: Likewise. 1997-08-22 19:04 Richard Henderson <rth@cygnus.com> * elf/rtld.c (_dl_start): Init _dl_rtld_map.l_opencount due to undocumented test addition in _dl_map_object. Support ET_EXEC versions of ld.so, for debugging at least: * elf/dl-load.c (_dl_map_object): Add_name_to_object could get called despite the DT_SONAME != NULL test, segfaulting. Simplify the code here as well. * elf/dl-lookup.c (do_lookup): Skip objects with no symtab. (_dl_setup_hash): Likewise for hash tables. * elf/dl-version.c (_dl_check_map_versions): Likewise for strtabs. * elf/rtld.c (_dl_start): Likewise for rpath. (_dl_rtld_libname2): New variable. (dl_main): Use it to add an soname for ourselves when we don't have one of our own. Base it on the target's .interp. (dl_main): Again, skip printing of objects that don't have strtabs. Sparc 32 merge: * elf/dl-runtime.c (ELF_FIXUP_RETURN_VALUE): Provide default value. (fixup): Simplify code. Use ELF_FIXUP_RETURN_VALUE. (profile_fixup): Likewise, though this still needs fixing for Sparc32 and PPC. * sysdeps/powerpc/dl-machine.h: Transmute ELF_FIXUP_RETURNS_ADDRESS to ELF_FIXUP_RETURN_VALUE. * sysdeps/sparc/sparc32/dl-machine.h: Implement lazy relocation. Fix up _dl_start_user to handle _dl_skip_args properly. Use _dl_hwcap to determine if "flush" is available/needed. * sysdeps/sparc/configure.in: Remove. It doesn't actually do anything anymore, and what it did do is done somewhere else. * sysdeps/sparc/configure: Likewise. * sysdeps/sparc/fpu/bits/mathdef.h (FP_ILOGB0, FP_ILOGBNAN): New. * sysdeps/sparc/fpu/fraiseexcpt.c: Rearrange for smaller code. * sysdeps/sparc/sparc32/Makefile: Fix sparc->sparc/sparc32 bits in divrem expansions. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (END, LOC): New definitions for assembly syntax differences. * sysdeps/sparc/sparc32/__longjmp.S: %g6,%g7 are reserved to the "system". Use %g2,%g3 instead. Use new local label macro. * sysdeps/sparc/sparc32/add_n.S: Use <sysdep.h> and ENTRY, END, and LOC for proper assembly headers/footers. * sysdeps/sparc/sparc32/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/alloca.S: Likewise. * sysdeps/sparc/sparc32/dotmul.S: Likewise. * sysdeps/sparc/sparc32/lshift.S: Likewise. * sysdeps/sparc/sparc32/mul_1.S: Likewise. * sysdeps/sparc/sparc32/rshift.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/mul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/submul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/sub_n.S: Likewise. * sysdeps/sparc/sparc32/submul_1.S: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/umul.S: Likewise. * sysdeps/sparc/sparc32/divrem.m4: Likewise. * sysdeps/sparc/sparc32/rem.S: Regenerate. * sysdeps/sparc/sparc32/sdiv.S: Regenerate. * sysdeps/sparc/sparc32/udiv.S: Regenerate. * sysdeps/sparc/sparc32/urem.S: Regenerate. * sysdeps/sparc/sparc32/sparcv8/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: New file. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/umul.S: New file. * sysdeps/sparc/sparc32/sparcv8/urem.S: New file. * sysdeps/sparc/sparc32/bsd-_setjmp.S: Dike out. * sysdeps/sparc/sparc32/bsd-setjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Add _setjmp and setjmp entry points. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Clean up PIC code. * sysdeps/sparc/sparc32/elf/start.S: New file, slightly modified from the sparc64 version. * sysdeps/sparc/sparc32/elf/start.c: Removed. * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Rewrite in assembly based on the sparc64 version. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Duh. Use proper syntax for manipulating %fsr. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Make IEEE conformance be the default. * elf/elf.h (HWCAP_SPARC_*): New definitions. * elf/rtld.c (_dl_hwcap): New variable. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Record AT_HWCAP. * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c: New file. Attempt to get hold of the page size based on what we might have been told at startup time in _dl_pagesize. This will be obsolete when I finish the kernel hooks for a proper sysconf(), stay tuned. Sparc 64 merge: * sysdeps/sparc/sparc64/dl-machine.h (ELF_FIXUP_RETURN_VALUE): New. Figure out the right thing to return based on the .plt format. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Update comment. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h (__dev_t): Should have been 64-bits wide. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: sll->sllx, optimize for branch delay slot usage. 1997-08-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * csu/Makefile ($(objpfx)crt%.o): Fix a missing *.so -> *.os change. 1997-08-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (identities): Change epsilon. * sysdeps/i386/fpu/bits/mathinline.h: Correct arguments to fabs, fabsf, fabsl, __fabsl. * sysdeps/libm-i387/e_remainderl.S: Pop extra value from FPU stack. * sysdeps/libm-ieee754/s_csinhl.c: Include <fenv.h>.
327 lines
8.1 KiB
C
327 lines
8.1 KiB
C
/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
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Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
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On-Line Applications Research Corporation.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* i386.h
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*
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* This file contains macros which are used to access i80386
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* registers which are not addressable by C. This file contains
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* functions which are useful to those developing target
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* specific support routines.
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*/
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#ifndef i386_h__
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#define i386_h__
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typedef unsigned char unsigned8;
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typedef unsigned short unsigned16;
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typedef unsigned int unsigned32;
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#define disable_intr( isrlevel ) \
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{ (isrlevel) = 0; \
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asm volatile ( "pushf ; \
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pop %0 ; \
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cli " \
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: "=r" ((isrlevel)) : "0" ((isrlevel)) ); \
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}
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#define enable_intr( isrlevel ) \
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{ asm volatile ( "push %0 ; \
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popf " \
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: "=r" ((isrlevel)) : "0" ((isrlevel)) ); \
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}
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#define delay( _microseconds ) \
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{ \
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unsigned32 _counter; \
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\
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_counter = (_microseconds); \
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\
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asm volatile ( "0: nop;" \
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" mov %0,%0 ;" \
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" loop 0" : "=c" (_counter) \
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: "0" (_counter) \
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); \
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\
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}
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/* segment access functions */
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static inline unsigned16 get_cs()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%cs,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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static inline unsigned16 get_ds()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%ds,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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static inline unsigned16 get_es()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%es,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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static inline unsigned16 get_ss()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%ss,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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static inline unsigned16 get_fs()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%fs,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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static inline unsigned16 get_gs()
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{
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register unsigned16 segment = 0;
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asm volatile ( "movw %%gs,%0" : "=r" (segment) : "0" (segment) );
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return segment;
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}
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/* i80x86 I/O instructions */
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#define outport_byte( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned8 __value = _value; \
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\
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asm volatile ( "outb %0,%1" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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}
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#define outport_word( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned16 __value = _value; \
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\
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asm volatile ( "outw %0,%1" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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}
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#define outport_long( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned32 __value = _value; \
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\
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asm volatile ( "outl %0,%1" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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}
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#define inport_byte( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned8 __value = 0; \
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\
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asm volatile ( "inb %1,%0" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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_value = __value; \
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}
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#define inport_word( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned16 __value = 0; \
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\
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asm volatile ( "inw %1,%0" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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_value = __value; \
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}
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#define inport_long( _port, _value ) \
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{ register unsigned16 __port = _port; \
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register unsigned32 __value = 0; \
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\
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asm volatile ( "inl %1,%0" : "=a" (__value), "=d" (__port) \
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: "0" (__value), "1" (__port) \
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); \
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_value = __value; \
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}
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/* structures */
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/* See Chapter 5 - Memory Management in i386 manual */
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struct GDT_slot {
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unsigned16 limit_0_15;
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unsigned16 base_0_15;
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unsigned8 base_16_23;
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unsigned8 type_dt_dpl_p;
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unsigned8 limit_16_19_granularity;
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unsigned8 base_24_31;
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};
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/* See Chapter 9 - Exceptions and Interrupts in i386 manual
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*
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* NOTE: This is the IDT entry for interrupt gates ONLY.
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*/
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struct IDT_slot {
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unsigned16 offset_0_15;
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unsigned16 segment_selector;
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unsigned8 reserved;
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unsigned8 p_dpl;
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unsigned16 offset_16_31;
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};
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struct DTR_load_save_format {
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unsigned16 limit;
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unsigned32 physical_address;
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};
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/* variables */
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extern struct IDT_slot Interrupt_descriptor_table[ 256 ];
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extern struct GDT_slot Global_descriptor_table[ 8192 ];
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/* functions */
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#ifdef CPU_INITIALIZE
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#define EXTERN
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#else
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#undef EXTERN
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#define EXTERN extern
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#endif
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void *Logical_to_physical(
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unsigned16 segment,
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void *address
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);
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void *Physical_to_logical(
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unsigned16 segment,
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void *address
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);
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/* complicated static inline functions */
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#define get_GDTR( _gdtr_address ) \
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{ \
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void *_gdtr = (_gdtr_address); \
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\
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asm volatile( "sgdt (%0)" : "=r" (_gdtr) : "0" (_gdtr) ); \
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}
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#define get_GDT_slot( _gdtr_base, _segment, _slot_address ) \
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{ \
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register unsigned32 _gdt_slot = (_gdtr_base) + (_segment); \
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register volatile void *_slot = (_slot_address); \
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register unsigned32 _temporary = 0; \
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\
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asm volatile( "movl %%gs:(%0),%1 ; \
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movl %1,(%2) ; \
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movl %%gs:4(%0),%1 ; \
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movl %1,4(%2)" \
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: "=r" (_gdt_slot), "=r" (_temporary), "=r" (_slot) \
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: "0" (_gdt_slot), "1" (_temporary), "2" (_slot) \
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); \
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}
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#define set_GDT_slot( _gdtr_base, _segment, _slot_address ) \
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{ \
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register unsigned32 _gdt_slot = (_gdtr_base) + (_segment); \
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register volatile void *_slot = (_slot_address); \
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register unsigned32 _temporary = 0; \
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\
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asm volatile( "movl (%2),%1 ; \
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movl %1,%%gs:(%0) ; \
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movl 4(%2),%1 ; \
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movl %1,%%gs:4(%0) \
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" \
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: "=r" (_gdt_slot), "=r" (_temporary), "=r" (_slot) \
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: "0" (_gdt_slot), "1" (_temporary), "2" (_slot) \
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); \
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}
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static inline void set_segment(
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unsigned16 segment,
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unsigned32 base,
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unsigned32 limit
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)
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{
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struct DTR_load_save_format gdtr;
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volatile struct GDT_slot Gdt_slot;
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volatile struct GDT_slot *gdt_slot = &Gdt_slot;
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unsigned16 tmp_segment = 0;
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unsigned32 limit_adjusted;
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/* load physical address of the GDT */
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get_GDTR( &gdtr );
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gdt_slot->type_dt_dpl_p = 0x92; /* present, dpl=0, */
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/* application=1, */
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/* type=data read/write */
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gdt_slot->limit_16_19_granularity = 0x40; /* 32 bit segment */
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limit_adjusted = limit;
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if ( limit > 4095 ) {
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gdt_slot->limit_16_19_granularity |= 0x80; /* set granularity bit */
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limit_adjusted /= 4096;
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}
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gdt_slot->limit_16_19_granularity |= (limit_adjusted >> 16) & 0xff;
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gdt_slot->limit_0_15 = limit_adjusted & 0xffff;
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gdt_slot->base_0_15 = base & 0xffff;
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gdt_slot->base_16_23 = (base >> 16) & 0xff;
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gdt_slot->base_24_31 = (base >> 24);
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set_GDT_slot( gdtr.physical_address, segment, gdt_slot );
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/* Now, reload all segment registers so the limit takes effect. */
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asm volatile( "movw %%ds,%0 ; movw %0,%%ds\n"
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"movw %%es,%0 ; movw %0,%%es\n"
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"movw %%fs,%0 ; movw %0,%%fs\n"
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"movw %%gs,%0 ; movw %0,%%gs\n"
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"movw %%ss,%0 ; movw %0,%%ss"
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: "=r" (tmp_segment)
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: "0" (tmp_segment)
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);
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}
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#endif
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/* end of include file */
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