* sysdeps/unix/sysv/linux/alpha/Makefile [stdlib]: Process ucontext-offsets.sym. * sysdeps/unix/sysv/linux/alpha/getcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/makecontext.S: New file. * sysdeps/unix/sysv/linux/alpha/setcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/swapcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/ucontext-offsets.sym: New file.
* sysdeps/unix/sysv/linux/alpha/Makefile [stdlib]: Process ucontext-offsets.sym. * sysdeps/unix/sysv/linux/alpha/getcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/makecontext.S: New file. * sysdeps/unix/sysv/linux/alpha/setcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/swapcontext.S: New file. * sysdeps/unix/sysv/linux/alpha/ucontext-offsets.sym: New file. 2004-01-15 Richard Henderson <rth@redhat.com>
This commit is contained in:
Richard Henderson
parent
23e50ece45
commit
33f0a6c75e
10
ChangeLog
10
ChangeLog
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@ -1,3 +1,13 @@
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2004-01-15 Richard Henderson <rth@redhat.com>
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* sysdeps/unix/sysv/linux/alpha/Makefile [stdlib]: Process
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ucontext-offsets.sym.
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* sysdeps/unix/sysv/linux/alpha/getcontext.S: New file.
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* sysdeps/unix/sysv/linux/alpha/makecontext.S: New file.
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* sysdeps/unix/sysv/linux/alpha/setcontext.S: New file.
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* sysdeps/unix/sysv/linux/alpha/swapcontext.S: New file.
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* sysdeps/unix/sysv/linux/alpha/ucontext-offsets.sym: New file.
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2004-01-15 Richard Henderson <rth@redhat.com>
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* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Prefix stubs with
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@ -2,6 +2,10 @@ ifeq ($(subdir),posix)
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sysdep_routines += oldglob
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endif
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ifeq ($(subdir),stdlib)
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gen-as-const-headers += ucontext-offsets.sym
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endif
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ifeq ($(subdir),misc)
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sysdep_headers += alpha/ptrace.h alpha/regdef.h sys/io.h
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@ -0,0 +1,186 @@
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/* Save current context.
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Copyright (C) 2004 Free Software Foundation, Inc.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <ucontext-offsets.h>
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/* ??? Should be a better place for this that's asm friendly. */
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#define SIG_BLOCK 1
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ENTRY (__getcontext)
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#ifdef PROF
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ldgp gp, 0(pv)
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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.prologue 1
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#else
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.prologue 0
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#endif
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bsr $0, __getcontext_x
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mov $31, $0
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ret
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END(__getcontext)
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weak_alias(__getcontext, getcontext)
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/* An internal routine used by getcontext and setcontext.
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The incomming return address register is $0. */
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.align 4
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.globl __getcontext_x
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.hidden __getcontext_x
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.usepv __getcontext_x, no
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cfi_startproc
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cfi_return_column (64)
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__getcontext_x:
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cfi_register (64, 0)
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/* Return value of getcontext. $0 is the only register
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whose value is not preserved. */
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stq $31, UC_SIGCTX+SC_REGS($16)
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/* Store all registers into the context. */
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stq $1, UC_SIGCTX+SC_REGS+1*8($16)
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stq $2, UC_SIGCTX+SC_REGS+2*8($16)
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stq $3, UC_SIGCTX+SC_REGS+3*8($16)
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stq $4, UC_SIGCTX+SC_REGS+4*8($16)
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stq $5, UC_SIGCTX+SC_REGS+5*8($16)
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stq $6, UC_SIGCTX+SC_REGS+6*8($16)
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stq $7, UC_SIGCTX+SC_REGS+7*8($16)
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stq $8, UC_SIGCTX+SC_REGS+8*8($16)
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stq $9, UC_SIGCTX+SC_REGS+9*8($16)
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stq $10, UC_SIGCTX+SC_REGS+10*8($16)
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stq $11, UC_SIGCTX+SC_REGS+11*8($16)
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stq $12, UC_SIGCTX+SC_REGS+12*8($16)
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stq $13, UC_SIGCTX+SC_REGS+13*8($16)
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stq $14, UC_SIGCTX+SC_REGS+14*8($16)
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stq $15, UC_SIGCTX+SC_REGS+15*8($16)
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stq $16, UC_SIGCTX+SC_REGS+16*8($16)
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stq $17, UC_SIGCTX+SC_REGS+17*8($16)
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stq $18, UC_SIGCTX+SC_REGS+18*8($16)
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stq $19, UC_SIGCTX+SC_REGS+19*8($16)
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stq $20, UC_SIGCTX+SC_REGS+20*8($16)
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stq $21, UC_SIGCTX+SC_REGS+21*8($16)
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stq $22, UC_SIGCTX+SC_REGS+22*8($16)
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stq $23, UC_SIGCTX+SC_REGS+23*8($16)
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stq $24, UC_SIGCTX+SC_REGS+24*8($16)
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stq $25, UC_SIGCTX+SC_REGS+25*8($16)
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stq $26, UC_SIGCTX+SC_REGS+26*8($16)
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stq $27, UC_SIGCTX+SC_REGS+27*8($16)
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stq $28, UC_SIGCTX+SC_REGS+28*8($16)
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stq $29, UC_SIGCTX+SC_REGS+29*8($16)
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stq $30, UC_SIGCTX+SC_REGS+30*8($16)
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stq $31, UC_SIGCTX+SC_REGS+31*8($16)
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stt $f0, UC_SIGCTX+SC_FPREGS+0*8($16)
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stt $f1, UC_SIGCTX+SC_FPREGS+1*8($16)
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stt $f2, UC_SIGCTX+SC_FPREGS+2*8($16)
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stt $f3, UC_SIGCTX+SC_FPREGS+3*8($16)
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stt $f4, UC_SIGCTX+SC_FPREGS+4*8($16)
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stt $f5, UC_SIGCTX+SC_FPREGS+5*8($16)
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stt $f6, UC_SIGCTX+SC_FPREGS+6*8($16)
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stt $f7, UC_SIGCTX+SC_FPREGS+7*8($16)
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stt $f8, UC_SIGCTX+SC_FPREGS+8*8($16)
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stt $f9, UC_SIGCTX+SC_FPREGS+9*8($16)
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stt $f10, UC_SIGCTX+SC_FPREGS+10*8($16)
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stt $f11, UC_SIGCTX+SC_FPREGS+11*8($16)
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stt $f12, UC_SIGCTX+SC_FPREGS+12*8($16)
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stt $f13, UC_SIGCTX+SC_FPREGS+13*8($16)
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stt $f14, UC_SIGCTX+SC_FPREGS+14*8($16)
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stt $f15, UC_SIGCTX+SC_FPREGS+15*8($16)
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stt $f16, UC_SIGCTX+SC_FPREGS+16*8($16)
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stt $f17, UC_SIGCTX+SC_FPREGS+17*8($16)
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stt $f18, UC_SIGCTX+SC_FPREGS+18*8($16)
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stt $f19, UC_SIGCTX+SC_FPREGS+19*8($16)
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stt $f20, UC_SIGCTX+SC_FPREGS+20*8($16)
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stt $f21, UC_SIGCTX+SC_FPREGS+21*8($16)
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stt $f22, UC_SIGCTX+SC_FPREGS+22*8($16)
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stt $f23, UC_SIGCTX+SC_FPREGS+23*8($16)
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stt $f24, UC_SIGCTX+SC_FPREGS+24*8($16)
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stt $f25, UC_SIGCTX+SC_FPREGS+25*8($16)
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stt $f26, UC_SIGCTX+SC_FPREGS+26*8($16)
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stt $f27, UC_SIGCTX+SC_FPREGS+27*8($16)
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stt $f28, UC_SIGCTX+SC_FPREGS+28*8($16)
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stt $f29, UC_SIGCTX+SC_FPREGS+29*8($16)
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stt $f30, UC_SIGCTX+SC_FPREGS+30*8($16)
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stt $f31, UC_SIGCTX+SC_FPREGS+31*8($16)
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mf_fpcr $f0
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lda $1, 8
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stt $f0, UC_SIGCTX+SC_FPCR($16)
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/* The return address of getcontext is the restart pc. */
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stq $26, UC_SIGCTX+SC_PC($16)
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/* Userlevel always has a processor status word of 8. */
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stq $1, UC_SIGCTX+SC_PS($16)
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/* Save registers around the syscall. We preserve $17
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for the benefit of swapcontext. */
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subq $30, 4*8, $30
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cfi_adjust_cfa_offset(4*8)
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stq $0, 0($30)
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cfi_rel_offset(64, 0)
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stq $16, 8($30)
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stq $17, 16($30)
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/* Save the current signal mask. Whee, there are three
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copies of this in the alpha ucontext_t. */
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lda $16, SIG_BLOCK
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lda $17, 0
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lda $0, __NR_osf_sigprocmask
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callsys
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ldq $16, 8($30)
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ldq $17, 16($30)
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stq $0, UC_OSF_SIGMASK($16)
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stq $0, UC_SIGCTX+SC_MASK($16)
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stq $0, UC_SIGMASK($16)
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stq $31, UC_SIGMASK + 1*8($16)
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stq $31, UC_SIGMASK + 2*8($16)
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stq $31, UC_SIGMASK + 3*8($16)
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stq $31, UC_SIGMASK + 4*8($16)
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stq $31, UC_SIGMASK + 5*8($16)
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stq $31, UC_SIGMASK + 6*8($16)
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stq $31, UC_SIGMASK + 7*8($16)
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stq $31, UC_SIGMASK + 8*8($16)
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stq $31, UC_SIGMASK + 9*8($16)
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stq $31, UC_SIGMASK +10*8($16)
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stq $31, UC_SIGMASK +11*8($16)
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stq $31, UC_SIGMASK +12*8($16)
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stq $31, UC_SIGMASK +13*8($16)
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stq $31, UC_SIGMASK +14*8($16)
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stq $31, UC_SIGMASK +15*8($16)
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ldq $0, 0($30)
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addq $30, 4*8, $30
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cfi_register (64, 0)
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cfi_adjust_cfa_offset(-4*8)
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ret $31, ($0), 1
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cfi_endproc
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.size __getcontext_x, .-__getcontext_x
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.type __getcontext_x, @function
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@ -0,0 +1,164 @@
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/* Copyright (C) 2004 Free Software Foundation, Inc.
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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
|
||||
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.
|
||||
|
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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. */
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||||
|
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#include <sysdep.h>
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#include <ucontext-offsets.h>
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|
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||||
ENTRY(__makecontext)
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ldgp $29, 0($27)
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#ifdef PROF
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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||||
.set at
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||||
#endif
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||||
.prologue 1
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||||
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/* Compute top of stack, including arguments. */
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||||
ldq $1, UC_STACK+SS_SP($16)
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||||
ldq $2, UC_STACK+SS_SIZE($16)
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||||
addq $1, $2, $8
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||||
subq $18, 6, $1
|
||||
cmovlt $1, 0, $1
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||||
s8addq $1, 0, $2
|
||||
subq $8, $2, $8
|
||||
|
||||
/* Copy all parameters. Switch statement header here. */
|
||||
ldah $3, $jumptable($29) !gprelhigh
|
||||
cmple $18, 6, $1
|
||||
mov $18, $2
|
||||
cmoveq $1, 7, $2
|
||||
s4addq $2, $3, $3
|
||||
ldl $4, $jumptable($3) !gprellow
|
||||
addq $4, $29, $4
|
||||
jmp $31, ($4), $args1
|
||||
|
||||
.section .rodata
|
||||
.align 2
|
||||
$jumptable:
|
||||
.gprel32 $args0
|
||||
.gprel32 $args1
|
||||
.gprel32 $args2
|
||||
.gprel32 $args3
|
||||
.gprel32 $args4
|
||||
.gprel32 $args5
|
||||
.gprel32 $args6
|
||||
.gprel32 $argsN
|
||||
.text
|
||||
|
||||
/* Here we process arguments 7 through N. This is a straight
|
||||
stack-to-stack copy. */
|
||||
.align 4
|
||||
$argsN:
|
||||
subq $18, 6, $1
|
||||
lda $2, 0($8)
|
||||
lda $3, 3*8($30)
|
||||
.align 4
|
||||
1:
|
||||
ldq $0, 0($3)
|
||||
subq $1, 1, $1
|
||||
lda $3, 8($3)
|
||||
stq $0, 0($2)
|
||||
lda $2, 8($2)
|
||||
bne $1, 1b
|
||||
|
||||
/* Here we process arguments 6 through 0. This involves
|
||||
copying into the register save areas of the ucontext. */
|
||||
.align 4
|
||||
$args6:
|
||||
ldq $0, 2*8($30)
|
||||
stq $0, UC_SIGCTX+SC_REGS+21*8($16)
|
||||
unop
|
||||
stq $0, UC_SIGCTX+SC_FPREGS+21*8($16)
|
||||
$args5:
|
||||
ldq $0, 1*8($30)
|
||||
stq $0, UC_SIGCTX+SC_REGS+20*8($16)
|
||||
unop
|
||||
stq $0, UC_SIGCTX+SC_FPREGS+20*8($16)
|
||||
$args4:
|
||||
ldq $0, 0*8($30)
|
||||
stq $0, UC_SIGCTX+SC_REGS+19*8($16)
|
||||
unop
|
||||
stq $0, UC_SIGCTX+SC_FPREGS+19*8($16)
|
||||
$args3:
|
||||
unop
|
||||
stq $21, UC_SIGCTX+SC_REGS+18*8($16)
|
||||
unop
|
||||
stt $f21, UC_SIGCTX+SC_FPREGS+18*8($16)
|
||||
$args2:
|
||||
unop
|
||||
stq $20, UC_SIGCTX+SC_REGS+17*8($16)
|
||||
unop
|
||||
stt $f20, UC_SIGCTX+SC_FPREGS+17*8($16)
|
||||
$args1:
|
||||
unop
|
||||
stq $19, UC_SIGCTX+SC_REGS+16*8($16)
|
||||
unop
|
||||
stt $f19, UC_SIGCTX+SC_FPREGS+16*8($16)
|
||||
$args0:
|
||||
|
||||
/* Set up the registers ready to invoke __startcontext.
|
||||
We seed $27 with the target function address, and $9
|
||||
with the link from ucp. */
|
||||
ldah $0, __startcontext($29) !gprelhigh
|
||||
ldq $1, UC_LINK($16)
|
||||
lda $0, __startcontext($0) !gprellow
|
||||
stq $17, UC_SIGCTX+SC_REGS+27*8($16)
|
||||
stq $8, UC_SIGCTX+SC_REGS+30*8($16)
|
||||
stq $0, UC_SIGCTX+SC_PC($16)
|
||||
stq $1, UC_SIGCTX+SC_REGS+9*8($16)
|
||||
|
||||
/* No return value from makecontext. */
|
||||
ret
|
||||
|
||||
END(__makecontext)
|
||||
weak_alias (__makecontext, makecontext)
|
||||
|
||||
/* This function is where a new makecontext "thread" begins life.
|
||||
We have already set up $27 for calling the target function, and
|
||||
we've set $9 to the UC_LINK of the parent context.
|
||||
|
||||
If the function returns, we either jump to the linked context
|
||||
(if non-null) or exit. */
|
||||
|
||||
.align 4
|
||||
.ent __startcontext
|
||||
__startcontext:
|
||||
.frame $31, 0, $31, 0
|
||||
.prologue 0
|
||||
|
||||
jsr $26, ($27), 0
|
||||
ldgp $29, 0($26)
|
||||
mov $9, $16
|
||||
beq $9, 1f
|
||||
|
||||
#ifdef PIC
|
||||
bsr $26, __setcontext !samegp
|
||||
1: mov $31, $16
|
||||
bsr $26, HIDDEN_JUMPTARGET(exit) !samegp
|
||||
#else
|
||||
jsr $26, __setcontext
|
||||
ldgp $29, 0($26)
|
||||
1: mov $31, $16
|
||||
jsr $26, HIDDEN_JUMPTARGET(exit)
|
||||
#endif
|
||||
|
||||
halt
|
||||
|
||||
.end __startcontext
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
/* Install given context.
|
||||
Copyright (C) 2004 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>
|
||||
#include <ucontext-offsets.h>
|
||||
|
||||
|
||||
/* In case the user fiddled it, copy the "official" signal mask
|
||||
from the ucontext_t into the sigcontext structure. */
|
||||
#undef PSEUDO_PREPARE_ARGS
|
||||
#define PSEUDO_PREPARE_ARGS \
|
||||
ldq $0, UC_SIGMASK($16); \
|
||||
stq $0, UC_SIGCTX+SC_MASK($16); \
|
||||
lda $16, UC_SIGCTX($16);
|
||||
|
||||
PSEUDO(__setcontext, sigreturn, 1)
|
||||
ret
|
||||
PSEUDO_END(__setcontext)
|
||||
weak_alias(__setcontext, setcontext)
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
/* Save current context and install the given one.
|
||||
Copyright (C) 2004 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>
|
||||
#include <ucontext-offsets.h>
|
||||
|
||||
ENTRY(__swapcontext)
|
||||
|
||||
#ifdef PROF
|
||||
ldgp $29, 0($27)
|
||||
.set noat
|
||||
lda AT, _mcount
|
||||
jsr AT, (AT), _mcount
|
||||
.set at
|
||||
.prologue 1
|
||||
#elif defined PIC
|
||||
.prologue 0
|
||||
#else
|
||||
ldgp $29, 0($27)
|
||||
.prologue 1
|
||||
#endif
|
||||
|
||||
#ifdef PIC
|
||||
unop
|
||||
bsr $0, __getcontext_x !samegp
|
||||
mov $17, $16
|
||||
br $31, __setcontext !samegp
|
||||
#else
|
||||
jsr $0, __getcontext_x
|
||||
mov $17, $16
|
||||
jmp $31, __setcontext
|
||||
#endif
|
||||
|
||||
END(__swapcontext)
|
||||
weak_alias(__swapcontext, swapcontext)
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
#include <stddef.h>
|
||||
#include <sys/ucontext.h>
|
||||
|
||||
--
|
||||
UC_LINK offsetof (ucontext_t, uc_link)
|
||||
UC_OSF_SIGMASK offsetof (ucontext_t, __uc_osf_sigmask)
|
||||
UC_STACK offsetof (ucontext_t, uc_stack)
|
||||
UC_SIGCTX offsetof (ucontext_t, uc_mcontext)
|
||||
UC_SIGMASK offsetof (ucontext_t, uc_sigmask)
|
||||
SC_REGS offsetof (struct sigcontext, sc_regs)
|
||||
SC_FPREGS offsetof (struct sigcontext, sc_fpregs)
|
||||
SC_PC offsetof (struct sigcontext, sc_pc)
|
||||
SC_PS offsetof (struct sigcontext, sc_ps)
|
||||
SC_FPCRS offsetof (struct sigcontext, sc_fpcr)
|
||||
SC_MASK offsetof (struct sigcontext, sc_mask)
|
||||
SC_FPCR offsetof (struct sigcontext, sc_fpcr)
|
||||
SS_SP offsetof (stack_t, ss_sp)
|
||||
SS_SIZE offsetof (stack_t, ss_size)
|
||||
Loading…
Reference in New Issue