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2001-03-16  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext):
	Drop hack that was needed for 2.1.1 kernel headers.

	* sysdeps/unix/sysv/linux/ia64/ucontext_i.h: New file.

	* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Rewrite to make it
	overlay with kernel's "struct sigcontext".

	* sysdeps/unix/sysv/linux/ia64/Makefile (sysdep_headers): Add
	sys/rse.h for "misc" subdir.
	(sysdep_routines): Add __start_context for "stdlib" subdir.

	* sysdeps/unix/sysv/linux/ia64/sys/rse.h: New file (based on
	kernel file of the same name).

	* stdlib/Makefile (tests): Add tst-setcontext.
	* stdlib/tst-setcontext.c: New file (based on a sample program by
	Uli Drepper).

	* sysdeps/unix/sysv/linux/ia64/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/ia64/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/ia64/__start_context.S: New file.
	* sysdeps/unix/sysv/linux/ia64/makecontext.c: New file.

	* sysdeps/unix/sysv/linux/ia64/__longjmp.S (__longjmp): Use extr.u
	instead of shift & and.
This commit is contained in:
Ulrich Drepper 2001-03-16 21:07:22 +00:00
parent b8a8413c6f
commit aeba9785a6
15 changed files with 771 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
ChangeLog
View File

@ -1,3 +1,32 @@
2001-03-16 David Mosberger <davidm@hpl.hp.com>
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext):
Drop hack that was needed for 2.1.1 kernel headers.
* sysdeps/unix/sysv/linux/ia64/ucontext_i.h: New file.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Rewrite to make it
overlay with kernel's "struct sigcontext".
* sysdeps/unix/sysv/linux/ia64/Makefile (sysdep_headers): Add
sys/rse.h for "misc" subdir.
(sysdep_routines): Add __start_context for "stdlib" subdir.
* sysdeps/unix/sysv/linux/ia64/sys/rse.h: New file (based on
kernel file of the same name).
* stdlib/Makefile (tests): Add tst-setcontext.
* stdlib/tst-setcontext.c: New file (based on a sample program by
Uli Drepper).
* sysdeps/unix/sysv/linux/ia64/setcontext.S: New file.
* sysdeps/unix/sysv/linux/ia64/getcontext.S: New file.
* sysdeps/unix/sysv/linux/ia64/__start_context.S: New file.
* sysdeps/unix/sysv/linux/ia64/makecontext.c: New file.
* sysdeps/unix/sysv/linux/ia64/__longjmp.S (__longjmp): Use extr.u
instead of shift & and.
2001-03-16 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/s390/s390-64/bits/huge_val.h: Move to...

4
linuxthreads/ChangeLog
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@ -1,3 +1,7 @@
2001-03-16 Ulrich Drepper <drepper@redhat.com>
* attr.c (pthread_getattr_np): Fix __stacksize computation for IA-64.
2001-03-13 Martin Schwidefsky <schwidefsky@de.ibm.com>
* shlib-versions: Add rule for Linux on 64 bit S/390.

2
linuxthreads/attr.c
View File

@ -303,7 +303,7 @@ int pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
/* XXX This is awkward. The guard pages are in the middle of the
two stacks. We must count the guard size in the stack size since
otherwise the range of the stack area cannot be computed. */
attr->__stacksize += attr->guardsize;
attr->__stacksize += attr->__guardsize;
#endif
attr->__stackaddr = guardaddr;

2
stdlib/Makefile
View File

@ -59,7 +59,7 @@ test-srcs := tst-fmtmsg
tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
test-canon test-canon2 tst-strtoll tst-environ \
tst-xpg-basename tst-random tst-bsearch tst-limits \
tst-rand48 bug-strtod
tst-rand48 bug-strtod tst-setcontext
# Several mpn functions from GNU MP are used by the strtod function.

113
stdlib/tst-setcontext.c Normal file
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@ -0,0 +1,113 @@
/* Copyright (C) 2001 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 <stdio.h>
#include <stdlib.h>
#include <ucontext.h>
static ucontext_t ctx[3];
static int was_in_f1;
static int was_in_f2;
static void
f1 (long a0, long a1, long a2, long a3)
{
printf ("start f1(a0=%lx,a1=%lx,a2=%lx,a3=%lx)\n", a0, a1, a2, a3);
if (a0 != 1 || a1 != 2 || a2 != 3 || a3 != -4)
{
puts ("arg mismatch");
exit (-1);
}
if (swapcontext (&ctx[1], &ctx[2]) != 0)
{
printf ("%s: swapcontext: %m\n", __FUNCTION__);
exit (1);
}
puts ("finish f1");
was_in_f1 = 1;
}
static void
f2 (void)
{
puts ("start f2");
if (swapcontext (&ctx[2], &ctx[1]) != 0)
{
printf ("%s: swapcontext: %m\n", __FUNCTION__);
exit (1);
}
puts ("finish f2");
was_in_f2 = 1;
}
int
main (void)
{
char st1[8192];
char st2[8192];
puts ("making contexts");
if (getcontext (&ctx[1]) != 0)
{
if (errno == ENOSYS)
exit (0);
printf ("%s: getcontext: %m\n", __FUNCTION__);
exit (1);
}
ctx[1].uc_stack.ss_sp = st1;
ctx[1].uc_stack.ss_size = sizeof st1;
ctx[1].uc_link = &ctx[0];
makecontext (&ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
if (getcontext (&ctx[2]) != 0)
{
printf ("%s: second getcontext: %m\n", __FUNCTION__);
exit (1);
}
ctx[2].uc_stack.ss_sp = st2;
ctx[2].uc_stack.ss_size = sizeof st2;
ctx[2].uc_link = &ctx[1];
makecontext (&ctx[2], f2, 0);
puts ("swapping contexts");
if (swapcontext (&ctx[0], &ctx[2]) != 0)
{
printf ("%s: swapcontext: %m\n", __FUNCTION__);
exit (1);
}
puts ("back at main program");
if (was_in_f1 == 0)
{
puts ("didn't reach f1");
exit (1);
}
if (was_in_f2 == 0)
{
puts ("didn't reach f2");
exit (1);
}
puts ("test succeeded");
return 0;
}

8
sysdeps/unix/sysv/linux/ia64/Makefile
View File

@ -1,3 +1,11 @@
ifeq ($(subdir),misc)
sysdep_headers += sys/rse.h
endif
ifeq ($(subdir),stdlib)
sysdep_routines += __start_context
endif
ifeq ($(subdir),csu)
CFLAGS-initfini.s += -DWEAK_GMON_START
endif

4
sysdeps/unix/sysv/linux/ia64/__longjmp.S
View File

@ -62,9 +62,7 @@ __longjmp:
sub r8=r8,in0 // r8 <- &orig_jmpbuf - &jmpbuf
;;
ld8 r25=[r2] // r25 <- jmpbuf.ar_unat
shr r8=r8,3 // r8 <- (&orig_jmpbuf - &jmpbuf)/8
;;
and r8=0x3f,r8
extr.u r8=r8,3,6 // r8 <- (&orig_jmpbuf - &jmpbuf)/8 & 0x3f
;;
cmp.lt pNeg,pPos=r8,r0
mov r2=in0

51
sysdeps/unix/sysv/linux/ia64/__start_context.S Normal file
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@ -0,0 +1,51 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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 <sysdep.h>
#include <features.h>
/* When a context set up by __makecontext() is activated, control
transfers to __start_context. When we get here:
b1 = entry point of function to call
in0 = address of UCP to resume after function returns
in1 = global pointer for __start_context
out0 .. outN = arguments for function */
ENTRY(__start_context)
.prologue
alloc r2 = ar.pfs, 2, 0, 8, 0
.save rp, r4 // terminate call chain with a NULL rp
mov r4 = r0
;;
.body
br.call.sptk rp = b1
1:
mov gp = in1 // restore gp
cmp.ne p6,p0 = in0, r0 // uc_link != 0 ?
;;
(p6) mov out0 = in0
(p6) br.call.sptk rp = __setcontext
.Lexit:
mov out0 = 0
br.call.sptk rp = exit
1: br.cond.sptk .Lexit
END(__start_context)

6
sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
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@ -21,12 +21,6 @@
# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
#endif
#ifndef sigcontext_struct
/* Kernel headers before 2.1.1 define a struct sigcontext_struct, but
we need sigcontext. */
# define sigcontext_struct sigcontext
#endif
#include <asm/fpu.h>
#include <bits/sigstack.h>

153
sysdeps/unix/sysv/linux/ia64/getcontext.S Normal file
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@ -0,0 +1,153 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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 <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __getcontext (const ucontext_t *ucp)
Saves the machine context in UCP such that when it is activated,
it appears as if __getcontext() returned again. The only difference
is that on a first return, r9 contains 1 and on a subsequent
return, it contains 0.
This implementation in intended to be used for *synchronous* context
switches only. Therefore, it does not have to save anything
other than the PRESERVED state. */
ENTRY(__getcontext)
alloc r16 = ar.pfs, 1, 0, 3, 0
// sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask):
mov r2 = SC_MASK
mov r15 = __NR_rt_sigprocmask
;;
mov out0 = SIG_BLOCK
mov out1 = 0
add out2 = r2, in0
break __BREAK_SYSCALL
flushrs // save dirty partition on rbs
mov.m rFPSR = ar.fpsr
mov.m rRSC = ar.rsc
add r2 = SC_GR+1*8, r32
;;
mov.m rBSP = ar.bsp
mov.m rUNAT = ar.unat
add r3 = SC_GR+4*8, r32
;;
.mem.offset 0,0; st8.spill [r2] = r1, (5*8 - 1*8)
.mem.offset 8,0; st8.spill [r3] = r4, 16
mov.i rPFS = ar.pfs
;;
.mem.offset 0,0; st8.spill [r2] = r5, 16
.mem.offset 8,0; st8.spill [r3] = r6
add r3 = (SC_FR+3*16-(SC_GR+6*8)), r3
;;
st8.spill [r2] = r7, (SC_FR+2*16-(SC_GR+7*8))
nop 0
and rTMP = ~0x3, rRSC
;;
mov.m ar.rsc = rTMP // put RSE into enforced lazy mode
mov.m rNAT = ar.unat
mov.i rLC = ar.lc
;;
mov.m rRNAT = ar.rnat
mov.m ar.rsc = rRSC // restore RSE mode
mov rPR = pr
/*
* Rotate NaT bits by rPOS positions to the right:
*/
stf.spill [r2] = f2, 32
stf.spill [r3] = f3, 32
add rPOS = SC_GR, r32 // rPOS <- &sc_gr[0]
;;
stf.spill [r2] = f4, (16*16-4*16)
stf.spill [r3] = f5, (17*16-5*16)
extr.u rPOS = rPOS, 3, 6 // get NaT bit number for r0
;;
stf.spill [r2] = f16, 32
stf.spill [r3] = f17, 32
sub rCPOS = 64, rPOS
;;
stf.spill [r2] = f18, 32
stf.spill [r3] = f19, 32
shr.u rTMP = rNAT, rPOS
;;
stf.spill [r2] = f20, 32
stf.spill [r3] = f21, 32
shl rNAT = rNAT, rCPOS
;;
stf.spill [r2] = f22, 32
stf.spill [r3] = f23, 32
or rNAT = rNAT, rTMP
;;
stf.spill [r2] = f24, 32
stf.spill [r3] = f25, 32
mov r8 = 0
;;
stf.spill [r2] = f26, 32
stf.spill [r3] = f27, 32
mov r9 = 1
;;
stf.spill [r2] = f28, 32
stf.spill [r3] = f29, 32
mov rB0 = b0
;;
stf.spill [r2] = f30, 32
stf.spill [r3] = f31, 32
mov rB1 = b1
;;
add r2 = SC_NAT, r32
nop 0
add r3 = SC_BSP, r32
;;
st8 [r2] = rNAT, (SC_RNAT-SC_NAT)
st8 [r3] = rBSP, (SC_UNAT-SC_BSP)
mov rB2 = b2
;;
st8 [r2] = rRNAT, (SC_FPSR-SC_RNAT)
st8 [r3] = rUNAT, (SC_PFS-SC_UNAT)
mov rB3 = b3
;;
st8 [r2] = rFPSR, (SC_LC-SC_FPSR)
st8 [r3] = rPFS, (SC_PR-SC_PFS)
mov rB4 = b4
;;
st8 [r2] = rLC, (SC_BR+0*8-SC_LC)
st8 [r3] = rPR, (SC_BR+1*8-SC_PR)
mov rB5 = b5
st8 [r2] = rB0, 16
st8 [r3] = rB1, 16
;;
st8 [r3] = rB2, 16
st8 [r3] = rB3, 16
;;
st8 [r2] = rB4
st8 [r3] = rB5
ret
END(__getcontext)
weak_alias(__getcontext, getcontext)

92
sysdeps/unix/sysv/linux/ia64/makecontext.c Normal file
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@ -0,0 +1,92 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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 <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <ucontext.h>
#include <ia64/rse.h>
struct fdesc
{
unsigned long ip;
unsigned long gp;
};
#define PUSH(val) \
do { \
if (ia64_rse_is_rnat_slot (rbs)) \
*rbs++ = 0; \
*rbs++ = (val); \
} while (0)
/* This implementation can handle an ARGC value of at most 8 and
values can be passed only in integer registers (r32-r39). */
void
__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
{
struct sigcontext *sc = &ucp->uc_mcontext;
extern void __start_context (ucontext_t *link, long gp, ...);
unsigned long stack_start, stack_end;
va_list ap;
long *rbs;
int i;
stack_start = (long) sc->sc_stack.ss_sp;
stack_end = (long) sc->sc_stack.ss_sp + sc->sc_stack.ss_size;
stack_start = (stack_start + 7) & -8;
stack_end = (stack_start + 15) & -16;
if (argc > 8)
{
fprintf (stderr, "__makecontext: does not know how to handle more "
"than 8 arguments\n");
exit (-1);
}
/* set the entry point and global pointer: */
sc->sc_br[0] = ((struct fdesc *) &__start_context)->ip;
sc->sc_br[1] = ((struct fdesc *) func)->ip;
sc->sc_gr[1] = ((struct fdesc *) func)->gp;
/* set up the call frame: */
sc->sc_ar_pfs = ((sc->sc_ar_pfs & ~0x3fffffffffUL)
| (argc + 2) | ((argc + 2) << 7));
rbs = (long *) stack_start;
PUSH((long) ucp->uc_link);
PUSH(((struct fdesc *) &__start_context)->gp);
va_start (ap, argc);
for (i = 0; i < argc; ++i)
PUSH(va_arg (ap, long));
va_end (ap);
/* set the memory and register stack pointers: */
sc->sc_ar_bsp = (long) rbs;
sc->sc_gr[12] = stack_end - 16;
/* clear the NaT bits for r1 and r12: */
sc->sc_nat &= ~((1 << 1) | (1 << 12));
sc->sc_ar_rnat = 0;
}
weak_alias (__makecontext, makecontext)

149
sysdeps/unix/sysv/linux/ia64/setcontext.S Normal file
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@ -0,0 +1,149 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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 <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __setcontext (const ucontext_t *ucp)
Restores the machine context in UCP and thereby resumes execution
in that context.
This implementation in intended to be used for *synchronous* context
switches only. Therefore, it does not have to restore anything
other than the PRESERVED state. */
ENTRY(__setcontext)
alloc r16 = ar.pfs, 1, 0, 3, 0
// sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL):
mov r2 = SC_MASK
mov r15 = __NR_rt_sigprocmask
;;
mov out0 = SIG_SETMASK
add out1 = r2, in0
mov out2 = 0
invala
break __BREAK_SYSCALL
add r2 = SC_NAT, r32
add r3 = SC_RNAT, r32 // r3 <- &sc_ar_rnat
add rPOS = SC_GR, r32 // rPOS <- &sc_gr[0]
;;
ld8 rNAT = [r2], (SC_BSP-SC_NAT)
extr.u rPOS = rPOS, 3, 6 // get NaT bit number for r0
;;
ld8 rBSP = [r2], (SC_UNAT-SC_BSP)
ld8 rRNAT = [r3], (SC_FPSR-SC_RNAT)
/*
* Rotate NaT bits by rPOS positions to the left:
*/
sub rCPOS = 64, rPOS
;;
ld8 rUNAT = [r2], (SC_PFS-SC_UNAT)
ld8 rFPSR = [r3], (SC_LC-SC_FPSR)
shl rTMP = rNAT, rPOS
;;
ld8 rPFS = [r2], (SC_PR-SC_PFS)
ld8 rLC = [r3], (SC_BR+0*8-SC_LC)
shr.u rNAT = rNAT, rCPOS
;;
ld8 rPR = [r2], (SC_BR+1*8-SC_PR)
ld8 rB0 = [r3], 16
or rNAT = rNAT, rTMP
;;
ld8 rB1 = [r2], 16
ld8 rB2 = [r3], 16
;;
mov.m ar.unat = rNAT
mov.m rRSC = ar.rsc
;;
ld8 rB3 = [r2], 16
ld8 rB4 = [r3], (SC_GR+1*8-(SC_BR+4*8))
;;
ld8 rB5 = [r2], (SC_GR+4*8-(SC_BR+5*8))
ld8.fill r1 = [r3], (5*8 - 1*8)
;;
ld8.fill r4 = [r2], 16
ld8.fill r5 = [r3], 16
mov b0 = rB0
;;
ld8.fill r6 = [r2]
ld8.fill r7 = [r3], (SC_FR+2*16-(SC_GR+7*8))
adds r2 = (SC_FR+3*16-(SC_GR+6*8)), r2
;;
ldf.fill f3 = [r2], 16
ldf.fill f2 = [r3], 48
mov b1 = rB1
;;
ldf.fill f4 = [r2], (16*16-4*16)
ldf.fill f5 = [r3], (17*16-5*16)
mov b2 = rB2
;;
ldf.fill f16 = [r2], 32
ldf.fill f17 = [r3], 32
mov b3 = rB3
;;
ldf.fill f18 = [r2], 32
ldf.fill f19 = [r3], 32
mov b4 = rB4
;;
ldf.fill f20 = [r2], 32
ldf.fill f21 = [r3], 32
mov b5 = rB5
;;
ldf.fill f22 = [r2], 32
ldf.fill f23 = [r3], 32
mov r8 = 0
;;
ldf.fill f24 = [r2], 32
ldf.fill f25 = [r3], 32
mov r9 = 0
;;
ldf.fill f26 = [r2], 32
ldf.fill f27 = [r3], 32
dep rTMP = 0, rRSC, 16, 14 // clear ar.rsc.loadrs
;;
ldf.fill f28 = [r2], 32
ldf.fill f29 = [r3], 32
and rTMP = ~0x3, rTMP // clear ar.rsc.mode
;;
ldf.fill f30 = [r2], 32
ldf.fill f31 = [r3], 32
mov pr = rPR, -1
;;
mov.m ar.rsc = rTMP // put RSE into enforced lazy mode
mov.m ar.fpsr = rFPSR
mov.i ar.pfs = rPFS
;;
loadrs // drop dirty partition is empty
;;
mov.m ar.bspstore = rBSP
mov.m ar.unat = rUNAT
mov.i ar.lc = rLC
;;
mov.m ar.rnat = rRNAT
mov.m ar.rsc = rRSC
ret
END(__setcontext)
weak_alias(__setcontext, setcontext)

78
sysdeps/unix/sysv/linux/ia64/sys/rse.h Normal file
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@ -0,0 +1,78 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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. */
#ifndef _ia64_rse_h
#define _ia64_rse_h
#include <features.h>
/* Register stack engine related helper functions. This file may be
used in applications, so be careful about the name-space and give
some consideration to non-GNU C compilers (though __inline is
fine). */
static __inline unsigned long
ia64_rse_slot_num (unsigned long *addr)
{
return (((unsigned long) addr) >> 3) & 0x3f;
}
/* Return TRUE if ADDR is the address of an RNAT slot. */
static __inline unsigned long
ia64_rse_is_rnat_slot (unsigned long *addr)
{
return ia64_rse_slot_num (addr) == 0x3f;
}
/* Returns the address of the RNAT slot that covers the slot at
address SLOT_ADDR. */
static __inline unsigned long *
ia64_rse_rnat_addr (unsigned long *slot_addr)
{
return (unsigned long *) ((unsigned long) slot_addr | (0x3f << 3));
}
/* Calcuate the number of registers in the dirty partition starting at
BSPSTORE with a size of DIRTY bytes. This isn't simply DIRTY
divided by eight because the 64th slot is used to store ar.rnat. */
static __inline unsigned long
ia64_rse_num_regs (unsigned long *bspstore, unsigned long *bsp)
{
unsigned long slots = (bsp - bspstore);
return slots - (ia64_rse_slot_num(bspstore) + slots)/0x40;
}
/* The inverse of the above: given bspstore and the number of
registers, calculate ar.bsp. */
static __inline unsigned long *
ia64_rse_skip_regs (unsigned long *addr, long num_regs)
{
long delta = ia64_rse_slot_num(addr) + num_regs;
if (num_regs < 0)
delta -= 0x3e;
return addr + num_regs + delta/0x3f;
}
#endif /* _ia64_rse_h */

74
sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1998, 2000 Free Software Foundation, Inc.
/* Copyright (C) 1998, 2000, 2001 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
@ -24,48 +24,40 @@
#include <bits/sigstack.h>
typedef struct
{
/* Place-holder for interrupt collection state. */
long int ics_placeholder[15];
unsigned long int ar_fpsr; /* Floating point status. */
unsigned long int gp; /* Global data pointer (gr1). */
/* scratch registers: */
unsigned long int gr8, gr9, gr10, gr11, gr13, gr14, gr15;
unsigned long int gr16, gr17, gr18, gr19, gr20, gr21, gr22, gr23;
unsigned long int gr24, gr25, gr26, gr27, gr28, gr29, gr30, gr31;
unsigned long int ar_unat;
unsigned long int ar_ec;
unsigned long int ar_ccv;
/* RSE state: */
unsigned long int ar_bsp_base; /* Location of RSE spill area. */
unsigned long int ar_pfs;
unsigned long int ar_rsc;
unsigned long int ar_bspstore;
unsigned long int ar_rnat;
/* Misc. state: */
unsigned long int dirty; /* BSP - BSPSTORE */
unsigned long int cr_tpr; /* Hw interrupt mask register. */
unsigned long int tpdp; /* thread private data pointer. */
unsigned long int br_6, br_7;
/* Argument regs (gr32-gr39): */
unsigned long int arg0, arg1, arg2, arg3;
unsigned long int arg4, arg5, arg6, arg7;
unsigned long int ss_flags; /* Save state flags. */
unsigned long int br_1, br_2, br_3, br_4, br_5; /* Branch registers. */
unsigned long int p_regs; /* Predicates. */
} mcontext_t;
/*
* These are here mostly for backwards compatibility with older Unices.
* IA-64 Linux does not distinguish between "struct sigcontext" and
* "ucontext_t" as all the necessary info is inside the former.
*/
typedef struct sigcontext mcontext_t;
#ifdef __GNUC__
# define _SC_GR0_OFFSET \
(((char *) &((struct sigcontext *) 0)->sc_gr[0]) - (char *) 0)
#else
# define _SC_GR0_OFFSET 0xc8 /* pray that this is correct... */
#endif
typedef struct ucontext
{
mcontext_t uc_mcontext; /* saved machine state */
int uc_spares[8]; /* room to grow... */
unsigned int uc_created_by_getcontext: 1;
unsigned int uc_reserved_flags: 31;
struct ucontext *uc_link;
__sigset_t uc_sigmask;
stack_t uc_stack;
} ucontext_t;
{
union
{
mcontext_t _mc;
struct
{
unsigned long _pad[_SC_GR0_OFFSET/8];
struct ucontext *_link; /* this should overlay sc_gr[0] */
}
_uc;
}
_u;
}
ucontext_t;
#define uc_mcontext _u._mc
#define uc_sigmask _u._mc.sc_sigmask
#define uc_stack _u._mc.sc_stack
#define uc_link _u._uc._link
#endif /* sys/ucontext.h */

58
sysdeps/unix/sysv/linux/ia64/ucontext_i.h Normal file
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/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.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. */
/* Constants shared between setcontext() and getcontext(). Don't
install this header file. */
#define SIG_BLOCK 0
#define SIG_UNBLOCK 1
#define SIG_SETMASK 2
#define SC_NAT 0x008
#define SC_BSP 0x048
#define SC_RNAT 0x050
#define SC_UNAT 0x060
#define SC_FPSR 0x068
#define SC_PFS 0x070
#define SC_LC 0x078
#define SC_PR 0x080
#define SC_BR 0x088
#define SC_GR 0x0c8
#define SC_FR 0x1d0
#define SC_MASK 0x9d0
#define rTMP r16
#define rPOS r16
#define rCPOS r17
#define rNAT r18
#define rB5 r18
#define rB4 r19
#define rB3 r20
#define rB2 r21
#define rB1 r22
#define rB0 r23
#define rRSC r24
#define rBSP r25
#define rRNAT r26
#define rUNAT r27
#define rFPSR r28
#define rPFS r29
#define rLC r30
#define rPR r31