diff options
Diffstat (limited to 'newlib/libc/sys/linux/linuxthreads/machine/i386')
16 files changed, 0 insertions, 6241 deletions
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Its master source is NOT part of - the C library, however. The master source lives in the GNU MP Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _bp_asm_h_ -# define _bp_asm_h_ 1 - -# if __ASSEMBLER__ - -# if __BOUNDED_POINTERS__ - -/* Bounded pointers occupy three words. */ -# define PTR_SIZE 12 -/* Bounded pointer return values are passed back through a hidden - argument that points to caller-allocate space. The hidden arg - occupies one word on the stack. */ -# define RTN_SIZE 4 -/* Although the caller pushes the hidden arg, the callee is - responsible for popping it. */ -# define RET_PTR ret $RTN_SIZE -/* Maintain frame pointer chain in leaf assembler functions for the benefit - of debugging stack traces when bounds violations occur. */ -# define ENTER pushl %ebp; movl %esp, %ebp -# define LEAVE movl %ebp, %esp; popl %ebp -/* Stack space overhead of procedure-call linkage: return address and - frame pointer. */ -# define LINKAGE 8 -/* Stack offset of return address after calling ENTER. */ -# define PCOFF 4 - -/* Int 5 is the "bound range" exception also raised by the "bound" - instruction. */ -# define BOUNDS_VIOLATED int $5 - -# define CHECK_BOUNDS_LOW(VAL_REG, BP_MEM) \ - cmpl 4+BP_MEM, VAL_REG; \ - jae 0f; /* continue if value >= low */ \ - BOUNDS_VIOLATED; \ - 0: - -# define CHECK_BOUNDS_HIGH(VAL_REG, BP_MEM, Jcc) \ - cmpl 8+BP_MEM, VAL_REG; \ - Jcc 0f; /* continue if value < high */ \ - BOUNDS_VIOLATED; \ - 0: - -# define CHECK_BOUNDS_BOTH(VAL_REG, BP_MEM) \ - cmpl 4+BP_MEM, VAL_REG; \ - jb 1f; /* die if value < low */ \ - cmpl 8+BP_MEM, VAL_REG; \ - jb 0f; /* continue if value < high */ \ - 1: BOUNDS_VIOLATED; \ - 0: - -# define CHECK_BOUNDS_BOTH_WIDE(VAL_REG, BP_MEM, LENGTH) \ - CHECK_BOUNDS_LOW(VAL_REG, BP_MEM); \ - addl LENGTH, VAL_REG; \ - cmpl 8+BP_MEM, VAL_REG; \ - jbe 0f; /* continue if value <= high */ \ - BOUNDS_VIOLATED; \ - 0: subl LENGTH, VAL_REG /* restore value */ - -/* Take bounds from BP_MEM and affix them to the pointer - value in %eax, stuffing all into memory at RTN(%esp). - Use %edx as a scratch register. */ - -# define RETURN_BOUNDED_POINTER(BP_MEM) \ - movl RTN(%esp), %edx; \ - movl %eax, 0(%edx); \ - movl 4+BP_MEM, %eax; \ - movl %eax, 4(%edx); \ - movl 8+BP_MEM, %eax; \ - movl %eax, 8(%edx) - -# define RETURN_NULL_BOUNDED_POINTER \ - movl RTN(%esp), %edx; \ - movl %eax, 0(%edx); \ - movl %eax, 4(%edx); \ - movl %eax, 8(%edx) - -/* The caller of __errno_location is responsible for allocating space - for the three-word BP return-value and passing pushing its address - as an implicit first argument. */ -# define PUSH_ERRNO_LOCATION_RETURN \ - subl $8, %esp; \ - subl $4, %esp; \ - pushl %esp - -/* __errno_location is responsible for popping the implicit first - argument, but we must pop the space for the BP itself. We also - dereference the return value in order to dig out the pointer value. */ -# define POP_ERRNO_LOCATION_RETURN \ - popl %eax; \ - addl $8, %esp - -# else /* !__BOUNDED_POINTERS__ */ - -/* Unbounded pointers occupy one word. */ -# define PTR_SIZE 4 -/* Unbounded pointer return values are passed back in the register %eax. */ -# define RTN_SIZE 0 -/* Use simple return instruction for unbounded pointer values. */ -# define RET_PTR ret -/* Don't maintain frame pointer chain for leaf assembler functions. */ -# define ENTER -# define LEAVE -/* Stack space overhead of procedure-call linkage: return address only. */ -# define LINKAGE 4 -/* Stack offset of return address after calling ENTER. */ -# define PCOFF 0 - -# define CHECK_BOUNDS_LOW(VAL_REG, BP_MEM) -# define CHECK_BOUNDS_HIGH(VAL_REG, BP_MEM, Jcc) -# define CHECK_BOUNDS_BOTH(VAL_REG, BP_MEM) -# define CHECK_BOUNDS_BOTH_WIDE(VAL_REG, BP_MEM, LENGTH) -# define RETURN_BOUNDED_POINTER(BP_MEM) - -# define RETURN_NULL_BOUNDED_POINTER - -# define PUSH_ERRNO_LOCATION_RETURN -# define POP_ERRNO_LOCATION_RETURN - -# endif /* !__BOUNDED_POINTERS__ */ - -# endif /* __ASSEMBLER__ */ - -#endif /* _bp_asm_h_ */ diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S b/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S deleted file mode 100644 index dd00c2fb5..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S +++ /dev/null @@ -1,95 +0,0 @@ -/* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Richard Henderson (rth@tamu.edu) - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* clone() is even more special than fork() as it mucks with stacks - and invokes a function in the right context after its all over. */ - -#include <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> -#include <asm/unistd.h> -#include <bp-sym.h> -#include <bp-asm.h> - -/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ - -#define PARMS LINKAGE /* no space for saved regs */ -#define FUNC PARMS -#define STACK FUNC+4 -#define FLAGS STACK+PTR_SIZE -#define ARG FLAGS+4 - - .text -ENTRY (BP_SYM (__clone)) - /* Sanity check arguments. */ - movl $-EINVAL,%eax - movl FUNC(%esp),%ecx /* no NULL function pointers */ -#ifdef PIC - jecxz SYSCALL_ERROR_LABEL -#else - testl %ecx,%ecx - jz SYSCALL_ERROR_LABEL -#endif - movl STACK(%esp),%ecx /* no NULL stack pointers */ -#ifdef PIC - jecxz SYSCALL_ERROR_LABEL -#else - testl %ecx,%ecx - jz SYSCALL_ERROR_LABEL -#endif - - /* Insert the argument onto the new stack. */ - subl $8,%ecx - movl ARG(%esp),%eax /* no negative argument counts */ - movl %eax,4(%ecx) - - /* Save the function pointer as the zeroth argument. - It will be popped off in the child in the ebx frobbing below. */ - movl FUNC(%esp),%eax - movl %eax,0(%ecx) - - /* Do the system call */ - pushl %ebx - movl FLAGS+4(%esp),%ebx - movl $SYS_ify(clone),%eax - int $0x80 - popl %ebx - - test %eax,%eax - jl SYSCALL_ERROR_LABEL - jz thread_start - -L(pseudo_end): - ret - -thread_start: - subl %ebp,%ebp /* terminate the stack frame */ - call *%ebx -#ifdef PIC - call L(here) -L(here): - popl %ebx - addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ebx -#endif - pushl %eax - call JUMPTARGET (_exit) - -PSEUDO_END (BP_SYM (__clone)) - -weak_alias (BP_SYM (__clone), BP_SYM (clone)) diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/configure b/newlib/libc/sys/linux/linuxthreads/machine/i386/configure deleted file mode 100755 index 310e8b3aa..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/configure +++ /dev/null @@ -1,3351 +0,0 @@ -#! /bin/sh - -# Guess values for system-dependent variables and create Makefiles. -# Generated automatically using autoconf version 2.13 -# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. -# -# This configure script is free software; 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See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> -#define _ERRNO_H -#include <bits/errno.h> -#include <bp-asm.h> -#include <bp-sym.h> - -.globl __syscall_error - -__syscall_error: -#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN - /* We translate the system's EWOULDBLOCK error into EAGAIN. - The GNU C library always defines EWOULDBLOCK==EAGAIN. - EWOULDBLOCK_sys is the original number. */ - cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */ - jne notb /* Branch if not. */ - movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ -notb: -#endif -#ifndef PIC - pushl %eax - PUSH_ERRNO_LOCATION_RETURN - call BP_SYM (__errno) - POP_ERRNO_LOCATION_RETURN - popl %ecx - movl %ecx, (%eax) -#else - /* The caller has pushed %ebx and then set it up to - point to the GOT before calling us through the PLT. */ - pushl %eax - PUSH_ERRNO_LOCATION_RETURN - call C_SYMBOL_NAME (BP_SYM (__errno)@PLT) - POP_ERRNO_LOCATION_RETURN - popl %ecx - /* Pop %ebx value saved before jumping here. */ - popl %ebx - movl %ecx, (%eax) -#endif - movl $-1, %eax - ret - -#undef __syscall_error -END (__syscall_error) diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.h deleted file mode 100644 index 02b4c19af..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.h +++ /dev/null @@ -1,130 +0,0 @@ -/* Assembler macros for i386. - Copyright (C) 1991, 92, 93, 95, 96, 98 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#define NO_UNDERSCORES - -#include <generic-sysdep.h> - -#ifdef __ASSEMBLER__ - -/* Syntactic details of assembler. */ - -#ifdef HAVE_ELF - -/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */ -#define ALIGNARG(log2) 1<<log2 -/* For ELF we need the `.type' directive to make shared libs work right. */ -#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg; -#define ASM_SIZE_DIRECTIVE(name) .size name,.-name; - -/* In ELF C symbols are asm symbols. */ -#undef NO_UNDERSCORES -#define NO_UNDERSCORES - -#else - -#define ALIGNARG(log2) log2 -#define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */ -#define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */ - -#endif - - -/* Define an entry point visible from C. - - There is currently a bug in gdb which prevents us from specifying - incomplete stabs information. Fake some entries here which specify - the current source file. */ -#define ENTRY(name) \ - STABS_CURRENT_FILE1("") \ - STABS_CURRENT_FILE(name) \ - ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ - ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ - .align ALIGNARG(4); \ - STABS_FUN(name) \ - C_LABEL(name) \ - CALL_MCOUNT - -#undef END -#define END(name) \ - ASM_SIZE_DIRECTIVE(name) \ - STABS_FUN_END(name) - -/* Remove the following two lines once the gdb bug is fixed. */ -#define STABS_CURRENT_FILE(name) \ - STABS_CURRENT_FILE1 (#name) -#define STABS_CURRENT_FILE1(name) \ - 1: .stabs name,100,0,0,1b; -/* Emit stabs definition lines. We use F(0,1) and define t(0,1) as `int', - the same way gcc does it. */ -#define STABS_FUN(name) STABS_FUN2(name, name##:F(0,1)) -#define STABS_FUN2(name, namestr) \ - .stabs "int:t(0,1)=r(0,1);-2147483648;2147483647;",128,0,0,0; \ - .stabs #namestr,36,0,0,name; -#define STABS_FUN_END(name) \ - 1: .stabs "",36,0,0,1b-name; - -/* If compiled for profiling, call `mcount' at the start of each function. */ -#ifdef PROF -/* The mcount code relies on a normal frame pointer being on the stack - to locate our caller, so push one just for its benefit. */ -#define CALL_MCOUNT \ - pushl %ebp; movl %esp, %ebp; call JUMPTARGET(mcount); popl %ebp; -#else -#define CALL_MCOUNT /* Do nothing. */ -#endif - -#ifdef NO_UNDERSCORES -/* Since C identifiers are not normally prefixed with an underscore - on this system, the asm identifier `syscall_error' intrudes on the - C name space. Make sure we use an innocuous name. */ -#define syscall_error __syscall_error -#define mcount _mcount -#endif - -#define PSEUDO(name, syscall_name, args) \ -lose: SYSCALL_PIC_SETUP \ - jmp JUMPTARGET(syscall_error) \ - .globl syscall_error; \ - ENTRY (name) \ - DO_CALL (syscall_name, args); \ - jb lose - -#undef PSEUDO_END -#define PSEUDO_END(name) \ - END (name) - -#ifdef PIC -#define JUMPTARGET(name) name##@PLT -#define SYSCALL_PIC_SETUP \ - pushl %ebx; \ - call 0f; \ -0: popl %ebx; \ - addl $_GLOBAL_OFFSET_TABLE+[.-0b], %ebx; -#else -#define JUMPTARGET(name) name -#define SYSCALL_PIC_SETUP /* Nothing. */ -#endif - -/* Local label name for asm code. */ -#ifndef L -#define L(name) name -#endif - -#endif /* __ASSEMBLER__ */ diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/pspinlock.c b/newlib/libc/sys/linux/linuxthreads/machine/i386/pspinlock.c deleted file mode 100644 index 5d242388a..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/pspinlock.c +++ /dev/null @@ -1,97 +0,0 @@ -/* POSIX spinlock implementation. x86 version. - 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. */ - -#include <errno.h> -#include <pthread.h> -#include "internals.h" - -/* This implementation is similar to the one used in the Linux kernel. - But the kernel is byte instructions for the memory access. This is - faster but unusable here. The problem is that only 128 - threads/processes could use the spinlock at the same time. If (by - a design error in the program) a thread/process would hold the - spinlock for a time long enough to accumulate 128 waiting - processes, the next one will find a positive value in the spinlock - and assume it is unlocked. We cannot accept that. */ - -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - asm volatile - ("\n" - "1:\n\t" - "lock; decl %0\n\t" - "js 2f\n\t" - ".section .text.spinlock,\"ax\"\n" - "2:\n\t" - "cmpl $0,%0\n\t" - "rep; nop\n\t" - "jle 2b\n\t" - "jmp 1b\n\t" - ".previous" - : "=m" (*lock)); - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - int oldval; - - asm volatile - ("xchgl %0,%1" - : "=r" (oldval), "=m" (*lock) - : "0" (0)); - return oldval > 0 ? 0 : EBUSY; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - asm volatile - ("movl $1,%0" - : "=m" (*lock)); - return 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ - /* We can ignore the `pshared' parameter. Since we are busy-waiting - all processes which can access the memory location `lock' points - to can use the spinlock. */ - *lock = 1; - return 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/pt-machine.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/pt-machine.h deleted file mode 100644 index 3346bcc34..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/pt-machine.h +++ /dev/null @@ -1,98 +0,0 @@ -/* Machine-dependent pthreads configuration and inline functions. - i386 version. - Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Richard Henderson <rth@tamu.edu>. - - 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 PT_EI -# define PT_EI extern inline -#endif - -/* Get some notion of the current stack. Need not be exactly the top - of the stack, just something somewhere in the current frame. */ -#define CURRENT_STACK_FRAME __builtin_frame_address (0) - - -/* Spinlock implementation; required. */ -PT_EI long int -testandset (int *spinlock) -{ - long int ret; - - __asm__ __volatile__( - "xchgl %0, %1" - : "=r"(ret), "=m"(*spinlock) - : "0"(1), "m"(*spinlock) - : "memory"); - - return ret; -} - - -/* Compare-and-swap for semaphores. - Available on the 486 and above, but not on the 386. - We test dynamically whether it's available or not. */ - -#define HAS_COMPARE_AND_SWAP -#define TEST_FOR_COMPARE_AND_SWAP - -PT_EI int -__compare_and_swap (long int *p, long int oldval, long int newval) -{ - char ret; - long int readval; - - __asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0" - : "=q" (ret), "=m" (*p), "=a" (readval) - : "r" (newval), "m" (*p), "a" (oldval) - : "memory"); - return ret; -} - - -PT_EI int -get_eflags (void) -{ - int res; - __asm__ __volatile__ ("pushfl; popl %0" : "=r" (res) : ); - return res; -} - - -PT_EI void -set_eflags (int newflags) -{ - __asm__ __volatile__ ("pushl %0; popfl" : : "r" (newflags) : "cc"); -} - - -PT_EI int -compare_and_swap_is_available (void) -{ - int oldflags = get_eflags (); - int changed; - /* Flip AC bit in EFLAGS. */ - set_eflags (oldflags ^ 0x40000); - /* See if bit changed. */ - changed = (get_eflags () ^ oldflags) & 0x40000; - /* Restore EFLAGS. */ - set_eflags (oldflags); - /* If the AC flag did not change, it's a 386 and it lacks cmpxchg. - Otherwise, it's a 486 or above and it has cmpxchg. */ - return changed != 0; -} diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/sigcontextinfo.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/sigcontextinfo.h deleted file mode 100644 index 6530ba6f3..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/sigcontextinfo.h +++ /dev/null @@ -1,51 +0,0 @@ -/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#define SIGCONTEXT struct sigcontext -#define SIGCONTEXT_EXTRA_ARGS -#define GET_PC(ctx) ((void *) ctx.eip) -#define GET_FRAME(ctx) ((void *) ctx.ebp) -#define GET_STACK(ctx) ((void *) ctx.esp_at_signal) -#define CALL_SIGHANDLER(handler, signo, ctx) \ -do { \ - int __tmp1, __tmp2, __tmp3, __tmp4; \ - __asm __volatile ("movl\t%%esp, %%edi\n\t" \ - "andl\t$-16, %%esp\n\t" \ - "subl\t%8, %%esp\n\t" \ - "movl\t%%edi, %c8-4(%%esp)\n\t" \ - "movl\t%1, 0(%%esp)\n\t" \ - "leal\t4(%%esp), %%edi\n\t" \ - "cld\n\t" \ - "rep\tmovsl\n\t" \ - "call\t*%0\n\t" \ - "cld\n\t" \ - "movl\t%9, %%ecx\n\t" \ - "subl\t%%edi, %%esi\n\t" \ - "leal\t4(%%esp,%%esi,1), %%edi\n\t" \ - "leal\t4(%%esp), %%esi\n\t" \ - "rep\tmovsl\n\t" \ - "movl\t%c8-4(%%esp), %%esp\n\t" \ - : "=a" (__tmp1), "=d" (__tmp2), "=S" (__tmp3), \ - "=c" (__tmp4) \ - : "0" (handler), "1" (signo), "2" (&ctx), \ - "3" (sizeof (struct sigcontext) / 4), \ - "n" ((sizeof (struct sigcontext) + 19) & ~15), \ - "i" (sizeof (struct sigcontext) / 4) \ - : "cc", "edi"); \ -} while (0) diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/stackinfo.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/stackinfo.h deleted file mode 100644 index a9a6745aa..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/stackinfo.h +++ /dev/null @@ -1,28 +0,0 @@ -/* Copyright (C) 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -/* On x86 the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -#endif /* stackinfo.h */ diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.S b/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.S deleted file mode 100644 index f219805a8..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.S +++ /dev/null @@ -1,41 +0,0 @@ -/* Copyright (C) 1995, 1996, 1997, 1998 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> - -/* The following code is only used in the shared library when we - compile the reentrant version. Otherwise each system call defines - each own version. */ - -#ifndef PIC - -/* The syscall stubs jump here when they detect an error. - The code for Linux is almost identical to the canonical Unix/i386 - code, except that the error number in %eax is negated. */ - -#undef CALL_MCOUNT -#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %eax. */ - - .text -ENTRY (__syscall_error) - negl %eax - -#define __syscall_error __syscall_error_1 -#include <i386-sysdep.S> - -#endif /* !PIC */ diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.h deleted file mode 100644 index 48aeab195..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.h +++ /dev/null @@ -1,291 +0,0 @@ -/* Copyright (C) 1992, 93, 95, 96, 97, 98, 99, 00 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _LINUX_I386_SYSDEP_H -#define _LINUX_I386_SYSDEP_H 1 - -#include "i386-sysdep.h" - -/* For Linux we can use the system call table in the header file - /usr/include/asm/unistd.h - of the kernel. But these symbols do not follow the SYS_* syntax - so we have to redefine the `SYS_ify' macro here. */ -#undef SYS_ify -#define SYS_ify(syscall_name) __NR_##syscall_name - -/* ELF-like local names start with `.L'. */ -#undef L -#define L(name) .L##name - -#ifdef __ASSEMBLER__ - -/* Linux uses a negative return value to indicate syscall errors, - unlike most Unices, which use the condition codes' carry flag. - - Since version 2.1 the return value of a system call might be - negative even if the call succeeded. E.g., the `lseek' system call - might return a large offset. Therefore we must not anymore test - for < 0, but test for a real error by making sure the value in %eax - is a real error number. Linus said he will make sure the no syscall - returns a value in -1 .. -4095 as a valid result so we can savely - test with -4095. */ - -/* We don't want the label for the error handle to be global when we define - it here. */ -#ifdef PIC -# define SYSCALL_ERROR_LABEL 0f -#else -# define SYSCALL_ERROR_LABEL syscall_error -#endif - -#undef PSEUDO -#define PSEUDO(name, syscall_name, args) \ - .text; \ - ENTRY (name) \ - DO_CALL (args, syscall_name); \ - cmpl $-4095, %eax; \ - jae SYSCALL_ERROR_LABEL; \ - L(pseudo_end): - -#undef PSEUDO_END -#define PSEUDO_END(name) \ - SYSCALL_ERROR_HANDLER \ - END (name) - -#ifndef PIC -#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ -#else -/* Store (- %eax) into errno through the GOT. */ -#ifdef _LIBC_REENTRANT -#define SYSCALL_ERROR_HANDLER \ -0:pushl %ebx; \ - call 1f; \ -1:popl %ebx; \ - xorl %edx, %edx; \ - addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx; \ - subl %eax, %edx; \ - pushl %edx; \ - PUSH_ERRNO_LOCATION_RETURN; \ - call BP_SYM (__errno_location)@PLT; \ - POP_ERRNO_LOCATION_RETURN; \ - popl %ecx; \ - popl %ebx; \ - movl %ecx, (%eax); \ - orl $-1, %eax; \ - jmp L(pseudo_end); -/* A quick note: it is assumed that the call to `__errno_location' does - not modify the stack! */ -#else -#define SYSCALL_ERROR_HANDLER \ -0:call 1f; \ -1:popl %ecx; \ - xorl %edx, %edx; \ - addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ecx; \ - subl %eax, %edx; \ - movl errno@GOT(%ecx), %ecx; \ - movl %edx, (%ecx); \ - orl $-1, %eax; \ - jmp L(pseudo_end); -#endif /* _LIBC_REENTRANT */ -#endif /* PIC */ - -/* Linux takes system call arguments in registers: - - syscall number %eax call-clobbered - arg 1 %ebx call-saved - arg 2 %ecx call-clobbered - arg 3 %edx call-clobbered - arg 4 %esi call-saved - arg 5 %edi call-saved - - The stack layout upon entering the function is: - - 20(%esp) Arg# 5 - 16(%esp) Arg# 4 - 12(%esp) Arg# 3 - 8(%esp) Arg# 2 - 4(%esp) Arg# 1 - (%esp) Return address - - (Of course a function with say 3 arguments does not have entries for - arguments 4 and 5.) - - The following code tries hard to be optimal. A general assumption - (which is true according to the data books I have) is that - - 2 * xchg is more expensive than pushl + movl + popl - - Beside this a neat trick is used. The calling conventions for Linux - tell that among the registers used for parameters %ecx and %edx need - not be saved. Beside this we may clobber this registers even when - they are not used for parameter passing. - - As a result one can see below that we save the content of the %ebx - register in the %edx register when we have less than 3 arguments - (2 * movl is less expensive than pushl + popl). - - Second unlike for the other registers we don't save the content of - %ecx and %edx when we have more than 1 and 2 registers resp. - - The code below might look a bit long but we have to take care for - the pipelined processors (i586). Here the `pushl' and `popl' - instructions are marked as NP (not pairable) but the exception is - two consecutive of these instruction. This gives no penalty on - other processors though. */ - -#undef DO_CALL -#define DO_CALL(args, syscall_name) \ - PUSHARGS_##args \ - DOARGS_##args \ - movl $SYS_ify (syscall_name), %eax; \ - int $0x80 \ - POPARGS_##args - -#define PUSHARGS_0 /* No arguments to push. */ -#define DOARGS_0 /* No arguments to frob. */ -#define POPARGS_0 /* No arguments to pop. */ -#define _PUSHARGS_0 /* No arguments to push. */ -#define _DOARGS_0(n) /* No arguments to frob. */ -#define _POPARGS_0 /* No arguments to pop. */ - -#define PUSHARGS_1 movl %ebx, %edx; PUSHARGS_0 -#define DOARGS_1 _DOARGS_1 (4) -#define POPARGS_1 POPARGS_0; movl %edx, %ebx -#define _PUSHARGS_1 pushl %ebx; _PUSHARGS_0 -#define _DOARGS_1(n) movl n(%esp), %ebx; _DOARGS_0(n-4) -#define _POPARGS_1 _POPARGS_0; popl %ebx - -#define PUSHARGS_2 PUSHARGS_1 -#define DOARGS_2 _DOARGS_2 (8) -#define POPARGS_2 POPARGS_1 -#define _PUSHARGS_2 _PUSHARGS_1 -#define _DOARGS_2(n) movl n(%esp), %ecx; _DOARGS_1 (n-4) -#define _POPARGS_2 _POPARGS_1 - -#define PUSHARGS_3 _PUSHARGS_2 -#define DOARGS_3 _DOARGS_3 (16) -#define POPARGS_3 _POPARGS_3 -#define _PUSHARGS_3 _PUSHARGS_2 -#define _DOARGS_3(n) movl n(%esp), %edx; _DOARGS_2 (n-4) -#define _POPARGS_3 _POPARGS_2 - -#define PUSHARGS_4 _PUSHARGS_4 -#define DOARGS_4 _DOARGS_4 (24) -#define POPARGS_4 _POPARGS_4 -#define _PUSHARGS_4 pushl %esi; _PUSHARGS_3 -#define _DOARGS_4(n) movl n(%esp), %esi; _DOARGS_3 (n-4) -#define _POPARGS_4 _POPARGS_3; popl %esi - -#define PUSHARGS_5 _PUSHARGS_5 -#define DOARGS_5 _DOARGS_5 (32) -#define POPARGS_5 _POPARGS_5 -#define _PUSHARGS_5 pushl %edi; _PUSHARGS_4 -#define _DOARGS_5(n) movl n(%esp), %edi; _DOARGS_4 (n-4) -#define _POPARGS_5 _POPARGS_4; popl %edi - -#else /* !__ASSEMBLER__ */ - -/* We need some help from the assembler to generate optimal code. We - define some macros here which later will be used. */ -asm (".L__X'%ebx = 1\n\t" - ".L__X'%ecx = 2\n\t" - ".L__X'%edx = 2\n\t" - ".L__X'%eax = 3\n\t" - ".L__X'%esi = 3\n\t" - ".L__X'%edi = 3\n\t" - ".L__X'%ebp = 3\n\t" - ".L__X'%esp = 3\n\t" - ".macro bpushl name reg\n\t" - ".if 1 - \\name\n\t" - ".if 2 - \\name\n\t" - "pushl %ebx\n\t" - ".else\n\t" - "xchgl \\reg, %ebx\n\t" - ".endif\n\t" - ".endif\n\t" - ".endm\n\t" - ".macro bpopl name reg\n\t" - ".if 1 - \\name\n\t" - ".if 2 - \\name\n\t" - "popl %ebx\n\t" - ".else\n\t" - "xchgl \\reg, %ebx\n\t" - ".endif\n\t" - ".endif\n\t" - ".endm\n\t" - ".macro bmovl name reg\n\t" - ".if 1 - \\name\n\t" - ".if 2 - \\name\n\t" - "movl \\reg, %ebx\n\t" - ".endif\n\t" - ".endif\n\t" - ".endm\n\t"); - -/* Define a macro which expands inline into the wrapper code for a system - call. */ -#undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ - ({ \ - unsigned int resultvar; \ - asm volatile ( \ - LOADARGS_##nr \ - "movl %1, %%eax\n\t" \ - "int $0x80\n\t" \ - RESTOREARGS_##nr \ - : "=a" (resultvar) \ - : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \ - if (resultvar >= 0xfffff001) \ - { \ - __set_errno (-resultvar); \ - resultvar = 0xffffffff; \ - } \ - (int) resultvar; }) - -#define LOADARGS_0 -#define LOADARGS_1 \ - "bpushl .L__X'%k2, %k2\n\t" \ - "bmovl .L__X'%k2, %k2\n\t" -#define LOADARGS_2 LOADARGS_1 -#define LOADARGS_3 LOADARGS_1 -#define LOADARGS_4 LOADARGS_1 -#define LOADARGS_5 LOADARGS_1 - -#define RESTOREARGS_0 -#define RESTOREARGS_1 \ - "bpopl .L__X'%k2, %k2\n\t" -#define RESTOREARGS_2 RESTOREARGS_1 -#define RESTOREARGS_3 RESTOREARGS_1 -#define RESTOREARGS_4 RESTOREARGS_1 -#define RESTOREARGS_5 RESTOREARGS_1 - -#define ASMFMT_0() -#define ASMFMT_1(arg1) \ - , "acdSD" (arg1) -#define ASMFMT_2(arg1, arg2) \ - , "adCD" (arg1), "c" (arg2) -#define ASMFMT_3(arg1, arg2, arg3) \ - , "aCD" (arg1), "c" (arg2), "d" (arg3) -#define ASMFMT_4(arg1, arg2, arg3, arg4) \ - , "aD" (arg1), "c" (arg2), "d" (arg3), "S" (arg4) -#define ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \ - , "a" (arg1), "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5) - -#endif /* __ASSEMBLER__ */ - -#endif /* linux/i386/sysdep.h */ diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/useldt.h b/newlib/libc/sys/linux/linuxthreads/machine/i386/useldt.h deleted file mode 100644 index 02d079c9e..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/useldt.h +++ /dev/null @@ -1,205 +0,0 @@ -/* Special definitions for ix86 machine using segment register based - thread descriptor. - Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>. - - 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. */ - -#include <stddef.h> /* For offsetof. */ -#include <stdlib.h> /* For abort(). */ - - -/* We don't want to include the kernel header. So duplicate the - information. */ - -/* Structure passed on `modify_ldt' call. */ -struct modify_ldt_ldt_s -{ - unsigned int entry_number; - unsigned long int base_addr; - unsigned int limit; - unsigned int seg_32bit:1; - unsigned int contents:2; - unsigned int read_exec_only:1; - unsigned int limit_in_pages:1; - unsigned int seg_not_present:1; - unsigned int useable:1; - unsigned int empty:25; -}; - -/* System call to set LDT entry. */ -extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t); - - -/* Return the thread descriptor for the current thread. - - The contained asm must *not* be marked volatile since otherwise - assignments like - pthread_descr self = thread_self(); - do not get optimized away. */ -#define THREAD_SELF \ -({ \ - register pthread_descr __self; \ - __asm__ ("movl %%gs:%c1,%0" : "=r" (__self) \ - : "i" (offsetof (struct _pthread_descr_struct, \ - p_header.data.self))); \ - __self; \ -}) - -/* Initialize the thread-unique value. */ -#define INIT_THREAD_SELF(descr, nr) \ -{ \ - struct modify_ldt_ldt_s ldt_entry = \ - { nr, (unsigned long int) descr, sizeof (*descr), 1, 0, 0, 0, 0, 1, 0 }; \ - if (__modify_ldt (1, &ldt_entry, sizeof (ldt_entry)) != 0) \ - abort (); \ - __asm__ __volatile__ ("movw %w0, %%gs" : : "q" (nr * 8 + 7)); \ -} - -/* Free resources associated with thread descriptor. */ -#define FREE_THREAD(descr, nr) \ -{ \ - struct modify_ldt_ldt_s ldt_entry = \ - { nr, 0, 0, 0, 0, 1, 0, 1, 0, 0 }; \ - __modify_ldt (1, &ldt_entry, sizeof (ldt_entry)); \ -} - -/* Read member of the thread descriptor directly. */ -#define THREAD_GETMEM(descr, member) \ -({ \ - __typeof__ (descr->member) __value; \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %%gs:%P2,%b0" \ - : "=q" (__value) \ - : "0" (0), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %%gs:%P1,%0" \ - : "=r" (__value) \ - : "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movl %%gs:%P1,%%eax\n\t" \ - "movl %%gs:%P2,%%edx" \ - : "=A" (__value) \ - : "i" (offsetof (struct _pthread_descr_struct, \ - member)), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member) + 4)); \ - } \ - __value; \ -}) - -/* Same as THREAD_GETMEM, but the member offset can be non-constant. */ -#define THREAD_GETMEM_NC(descr, member) \ -({ \ - __typeof__ (descr->member) __value; \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %%gs:(%2),%b0" \ - : "=q" (__value) \ - : "0" (0), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %%gs:(%1),%0" \ - : "=r" (__value) \ - : "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movl %%gs:(%1),%%eax\n\t" \ - "movl %%gs:4(%1),%%edx" \ - : "=&A" (__value) \ - : "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ - __value; \ -}) - -/* Same as THREAD_SETMEM, but the member offset can be non-constant. */ -#define THREAD_SETMEM(descr, member, value) \ -({ \ - __typeof__ (descr->member) __value = (value); \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %0,%%gs:%P1" : \ - : "q" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %0,%%gs:%P1" : \ - : "r" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movl %%eax,%%gs:%P1\n\n" \ - "movl %%edx,%%gs:%P2" : \ - : "A" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member)), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member) + 4)); \ - } \ -}) - -/* Set member of the thread descriptor directly. */ -#define THREAD_SETMEM_NC(descr, member, value) \ -({ \ - __typeof__ (descr->member) __value = (value); \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %0,%%gs:(%1)" : \ - : "q" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %0,%%gs:(%1)" : \ - : "r" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movl %%eax,%%gs:(%1)\n\t" \ - "movl %%edx,%%gs:4(%1)" : \ - : "A" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ -}) - -/* 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 |