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[BZ #6411]

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2008-11-13  Ryan S. Arnold  <rsa@us.ibm.com>
	[BZ #6411]
	* sysdeps/powerpc/fpu/Makefile: Added test case tst-setcontext-fpscr.
	* sysdeps/powerpc/fpu/feholdexcpt.c (_FPU_MASK_ALL): Define to replace
	magic numbers.
	* sysdeps/powerpc/fpu/fenv_libc.h (fesetenv_register): Dynamically
	choose mtfsf insn based on PPC_FEATURE_HAS_DFP.
	(relax_fenv_state): Same as above.
	(FPSCR_29): Reserve bit in ISA 2.05.
	(FPSCR_NI): Provide define for compat.
	* sysdeps/powerpc/fpu/fesetenv.c (_FPU_MASK_ALL): Define to replace
	magic numbers.
	* sysdeps/powerpc/fpu/feupdateenv.c (_FPU_MASK_ALL): Define to replace
	magic numbers.
	* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: New file.  Test case to
	test setcontext and swapcontext with dynamic 64-bit FPSCR detection.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S (__longjmp): Adjust
	access to hwcap to account for hwcap size increase to uint64_t.
	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S (__sigsetjmp ):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S
	(*setcontext): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/setcontext.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/swapcontext.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S
	(*setcontext): dynamically select mtfsf insn based on
	PPC_FEATURE_HAS_DFP. Adjust access to hwcap to account for hwcap size
	increase to uint64_t.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
	(*swapcontext): dynamically select mtfsf insn based on
	PPC_FEATURE_HAS_DFP.  Adjust access to hwcap to account for hwcap size
	increase to uint64_t.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/setcontext.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/swapcontext.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
	(*setcontext): dynamically select mtfsf insn based on
	PPC_FEATURE_HAS_DFP.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
	(*swapcontext): dynamically select mtfsf insn based on
	PPC_FEATURE_HAS_DFP.
This commit is contained in:
Ulrich Drepper
2008-11-17 02:49:45 +00:00
parent f52bb4d77e
commit edba7a54eb
18 changed files with 639 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
ChangeLog
View File

@ -1,3 +1,49 @@
2008-11-13 Ryan S. Arnold <rsa@us.ibm.com>
[BZ #6411]
* sysdeps/powerpc/fpu/Makefile: Added test case tst-setcontext-fpscr.
* sysdeps/powerpc/fpu/feholdexcpt.c (_FPU_MASK_ALL): Define to replace
magic numbers.
* sysdeps/powerpc/fpu/fenv_libc.h (fesetenv_register): Dynamically
choose mtfsf insn based on PPC_FEATURE_HAS_DFP.
(relax_fenv_state): Same as above.
(FPSCR_29): Reserve bit in ISA 2.05.
(FPSCR_NI): Provide define for compat.
* sysdeps/powerpc/fpu/fesetenv.c (_FPU_MASK_ALL): Define to replace
magic numbers.
* sysdeps/powerpc/fpu/feupdateenv.c (_FPU_MASK_ALL): Define to replace
magic numbers.
* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: New file. Test case to
test setcontext and swapcontext with dynamic 64-bit FPSCR detection.
* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S (__longjmp): Adjust
access to hwcap to account for hwcap size increase to uint64_t.
* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S (__sigsetjmp ):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S
(*setcontext): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/setcontext.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/swapcontext.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S
(*setcontext): dynamically select mtfsf insn based on
PPC_FEATURE_HAS_DFP. Adjust access to hwcap to account for hwcap size
increase to uint64_t.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
(*swapcontext): dynamically select mtfsf insn based on
PPC_FEATURE_HAS_DFP. Adjust access to hwcap to account for hwcap size
increase to uint64_t.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/setcontext.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/swapcontext.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
(*setcontext): dynamically select mtfsf insn based on
PPC_FEATURE_HAS_DFP.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
(*swapcontext): dynamically select mtfsf insn based on
PPC_FEATURE_HAS_DFP.
2008-11-13 Ulrich Drepper <drepper@redhat.com>
* version.h: Bump for 2.9 release.

4
sysdeps/powerpc/fpu/Makefile
View File

@ -5,3 +5,7 @@ libm-tests += test-powerpc-snan
# libm needs ld.so to access dl_hwcap
$(objpfx)libm.so: $(elfobjdir)/ld.so
endif
ifeq ($(subdir),stdlib)
tests += tst-setcontext-fpscr
endif

6
sysdeps/powerpc/fpu/feholdexcpt.c
View File

@ -1,5 +1,5 @@
/* Store current floating-point environment and clear exceptions.
Copyright (C) 1997, 2005 Free Software Foundation, Inc.
Copyright (C) 1997, 2005, 2008 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
@ -18,6 +18,8 @@
02111-1307 USA. */
#include <fenv_libc.h>
#include <fpu_control.h>
#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_XM | _FPU_MASK_IM)
int
feholdexcept (fenv_t *envp)
@ -35,7 +37,7 @@ feholdexcept (fenv_t *envp)
/* If the old env had any eabled exceptions, then mask SIGFPE in the
MSR FE0/FE1 bits. This may allow the FPU to run faster because it
always takes the default action and can not generate SIGFPE. */
if ((old.l[1] & 0x000000F8) != 0)
if ((old.l[1] & _FPU_MASK_ALL) != 0)
(void)__fe_mask_env ();
/* Put the new state in effect. */

26
sysdeps/powerpc/fpu/fenv_libc.h
View File

@ -21,6 +21,8 @@
#define _FENV_LIBC_H 1
#include <fenv.h>
#include <ldsodefs.h>
#include <sysdep.h>
libm_hidden_proto (__fe_nomask_env)
@ -34,7 +36,13 @@ libm_hidden_proto (__fe_nomask_env)
/* Equivalent to fesetenv, but takes a fenv_t instead of a pointer. */
#define fesetenv_register(env) \
({ double d = (env); asm volatile ("mtfsf 0xff,%0" : : "f" (d)); })
do { \
double d = (env); \
if(GLRO(dl_hwcap) & PPC_FEATURE_HAS_DFP) \
asm volatile ("mtfsf 0xff,%0,1,0" : : "f" (d)); \
else \
asm volatile ("mtfsf 0xff,%0" : : "f" (d)); \
} while(0)
/* This very handy macro:
- Sets the rounding mode to 'round to nearest';
@ -42,7 +50,12 @@ libm_hidden_proto (__fe_nomask_env)
- Prevents exceptions from being raised for inexact results.
These things happen to be exactly what you need for typical elementary
functions. */
#define relax_fenv_state() asm ("mtfsfi 7,0")
#define relax_fenv_state() \
do { \
if(GLRO(dl_hwcap) & PPC_FEATURE_HAS_DFP) \
asm ("mtfsfi 7,0,1"); \
asm ("mtfsfi 7,0"); \
} while(0)
/* Set/clear a particular FPSCR bit (for instance,
reset_fpscr_bit(FPSCR_VE);
@ -122,10 +135,19 @@ enum {
FPSCR_UE, /* underflow exception enable */
FPSCR_ZE, /* zero divide exception enable */
FPSCR_XE, /* inexact exception enable */
#ifdef _ARCH_PWR6
FPSCR_29, /* Reserved in ISA 2.05 */
#else
FPSCR_NI /* non-IEEE mode (typically, no denormalised numbers) */
#endif /* _ARCH_PWR6 */
/* the remaining two least-significant bits keep the rounding mode */
};
#ifdef _ARCH_PWR6
/* Not supported in ISA 2.05. Provided for source compat only. */
# define FPSCR_NI 29
#endif /* _ARCH_PWR6 */
/* This operation (i) sets the appropriate FPSCR bits for its
parameter, (ii) converts SNaN to the corresponding NaN, and (iii)
otherwise passes its parameter through unchanged (in particular, -0

20
sysdeps/powerpc/fpu/fesetenv.c
View File

@ -1,5 +1,6 @@
/* Install given floating-point environment.
Copyright (C) 1997,99,2000,01,02,07 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008
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
@ -18,8 +19,11 @@
02111-1307 USA. */
#include <fenv_libc.h>
#include <fpu_control.h>
#include <bp-sym.h>
#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_XM | _FPU_MASK_IM)
int
__fesetenv (const fenv_t *envp)
{
@ -29,18 +33,18 @@ __fesetenv (const fenv_t *envp)
new.fenv = *envp;
old.fenv = fegetenv_register ();
/* If the old env has no eabled exceptions and the new env has any enabled
exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put
the hardware into "precise mode" and may cause the FPU to run slower on
some hardware. */
if ((old.l[1] & 0x000000F8) == 0 && (new.l[1] & 0x000000F8) != 0)
/* If the old env has no enabled exceptions and the new env has any enabled
exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put the
hardware into "precise mode" and may cause the FPU to run slower on some
hardware. */
if ((old.l[1] & _FPU_MASK_ALL) == 0 && (new.l[1] & _FPU_MASK_ALL) != 0)
(void)__fe_nomask_env ();
/* If the old env had any eabled exceptions and the new env has no enabled
/* If the old env had any enabled exceptions and the new env has no enabled
exceptions, then mask SIGFPE in the MSR FE0/FE1 bits. This may allow the
FPU to run faster because it always takes the default action and can not
generate SIGFPE. */
if ((old.l[1] & 0x000000F8) != 0 && (new.l[1] & 0x000000F8) == 0)
if ((old.l[1] & _FPU_MASK_ALL) != 0 && (new.l[1] & _FPU_MASK_ALL) == 0)
(void)__fe_mask_env ();
fesetenv_register (*envp);

10
sysdeps/powerpc/fpu/feupdateenv.c
View File

@ -1,5 +1,6 @@
/* Install given floating-point environment and raise exceptions.
Copyright (C) 1997,99,2000,01,07 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -19,8 +20,11 @@
02111-1307 USA. */
#include <fenv_libc.h>
#include <fpu_control.h>
#include <bp-sym.h>
#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_XM | _FPU_MASK_IM)
int
__feupdateenv (const fenv_t *envp)
{
@ -39,14 +43,14 @@ __feupdateenv (const fenv_t *envp)
exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put
the hardware into "precise mode" and may cause the FPU to run slower on
some hardware. */
if ((old.l[1] & 0x000000F8) == 0 && (new.l[1] & 0x000000F8) != 0)
if ((old.l[1] & _FPU_MASK_ALL) == 0 && (new.l[1] & _FPU_MASK_ALL) != 0)
(void)__fe_nomask_env ();
/* If the old env had any eabled exceptions and the new env has no enabled
exceptions, then mask SIGFPE in the MSR FE0/FE1 bits. This may allow the
FPU to run faster because it always takes the default action and can not
generate SIGFPE. */
if ((old.l[1] & 0x000000F8) != 0 && (new.l[1] & 0x000000F8) == 0)
if ((old.l[1] & _FPU_MASK_ALL) != 0 && (new.l[1] & _FPU_MASK_ALL) == 0)
(void)__fe_mask_env ();
/* Atomically enable and raise (if appropriate) exceptions set in `new'. */

358
sysdeps/powerpc/fpu/tst-setcontext-fpscr.c Normal file
View File

@ -0,0 +1,358 @@
/* Copyright (C) 2001,2002,2004,2006,2007,2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ryan S. Arnold <rsa@us.ibm.com>
Sean Curry <spcurry@us.ibm.com>
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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>
#include <unistd.h>
#include <malloc.h>
#include <link.h>
#include <elf.h>
#include <sysdep.h>
#include <fpu_control.h>
static ucontext_t ctx[3];
volatile int global;
static int back_in_main;
volatile static ElfW(auxv_t) *auxv = NULL;
ElfW(Addr) query_auxv(int type)
{
FILE *auxv_f;
ElfW(auxv_t) auxv_struct;
ElfW(auxv_t) *auxv_temp;
int i = 0;
/* if the /proc/self/auxv file has not been manually copied into the heap
yet, then do it */
if(auxv == NULL)
{
auxv_f = fopen("/proc/self/auxv", "r");
if(auxv_f == 0)
{
perror("Error opening file for reading");
return 0;
}
auxv = (ElfW(auxv_t) *)malloc(getpagesize());
do
{
fread(&auxv_struct, sizeof(ElfW(auxv_t)), 1, auxv_f);
auxv[i] = auxv_struct;
i++;
} while(auxv_struct.a_type != AT_NULL);
}
auxv_temp = (ElfW(auxv_t) *)auxv;
i = 0;
do
{
if(auxv_temp[i].a_type == type)
{
return auxv_temp[i].a_un.a_val;
}
i++;
} while (auxv_temp[i].a_type != AT_NULL);
return 0;
}
typedef unsigned long long di_fpscr_t __attribute__ ((__mode__ (__DI__)));
typedef unsigned int si_fpscr_t __attribute__ ((__mode__ (__SI__)));
#define _FPSCR_RESERVED 0xfffffff8ffffff04ULL
#define _FPSCR_TEST0_DRN 0x0000000400000000ULL
#define _FPSCR_TEST0_RN 0x0000000000000003ULL
#define _FPSCR_TEST1_DRN 0x0000000300000000ULL
#define _FPSCR_TEST1_RN 0x0000000000000002ULL
/* Macros for accessing the hardware control word on Power6[x]. */
# define _GET_DI_FPSCR(__fpscr) ({ \
union { double d; \
di_fpscr_t fpscr; } \
tmp __attribute__ ((__aligned__(8))); \
__asm__ ("mffs 0; stfd%U0 0,%0" : "=m" (tmp.d) : : "fr0"); \
(__fpscr)=tmp.fpscr; \
tmp.fpscr; })
# define _SET_DI_FPSCR(__fpscr) { \
union { double d; di_fpscr_t fpscr; } \
tmp __attribute__ ((__aligned__(8))); \
tmp.fpscr = __fpscr; \
/* Set the entire 64-bit FPSCR. */ \
__asm__ ("lfd%U0 0,%0; mtfsf 255,0,1,0" : : "m" (tmp.d) : "fr0"); \
}
# define _GET_SI_FPSCR(__fpscr) ({ \
union { double d; \
si_fpscr_t cw[2]; } \
tmp __attribute__ ((__aligned__(8))); \
__asm__ ("mffs 0; stfd%U0 0,%0" : "=m" (tmp.d) : : "fr0"); \
(__fpscr)=tmp.cw[1]; \
tmp.cw[0]; })
# define _SET_SI_FPSCR(__fpscr) { \
union { double d; si_fpscr_t fpscr[2]; } \
tmp __attribute__ ((__aligned__(8))); \
/* More-or-less arbitrary; this is a QNaN. */ \
tmp.fpscr[0] = 0xFFF80000; \
tmp.fpscr[1] = __fpscr; \
__asm__ ("lfd%U0 0,%0; mtfsf 255,0" : : "m" (tmp.d) : "fr0"); \
}
void prime_special_regs(int which)
{
ElfW(Addr) a_val;
di_fpscr_t di_fpscr __attribute__ ((__aligned__(8)));
a_val = query_auxv(AT_HWCAP);
if(a_val == -1)
{
puts ("querying the auxv for the hwcap failed");
_exit (1);
}
/* Indicates a 64-bit FPSCR. */
if (a_val & PPC_FEATURE_HAS_DFP)
{
_GET_DI_FPSCR(di_fpscr);
/* Overwrite the existing DRN and RN if there is one. */
if (which == 0)
di_fpscr = ((di_fpscr & _FPSCR_RESERVED) | (_FPSCR_TEST0_DRN | _FPSCR_TEST0_RN));
else
di_fpscr = ((di_fpscr & _FPSCR_RESERVED) | (_FPSCR_TEST1_DRN | _FPSCR_TEST1_RN));
puts ("Priming 64-bit FPSCR with:");
printf("0x%.16llx\n",(unsigned long long int)di_fpscr);
_SET_DI_FPSCR(di_fpscr);
}
else
{
puts ("32-bit FPSCR found and will be tested.");
_GET_SI_FPSCR(di_fpscr);
/* Overwrite the existing RN if there is one. */
if (which == 0)
di_fpscr = ((di_fpscr & _FPSCR_RESERVED) | (_FPSCR_TEST0_RN));
else
di_fpscr = ((di_fpscr & _FPSCR_RESERVED) | (_FPSCR_TEST1_RN));
puts ("Priming 32-bit FPSCR with:");
printf("0x%.8lx\n",(unsigned long int) di_fpscr);
_SET_SI_FPSCR(di_fpscr);
}
}
void clear_special_regs(void)
{
ElfW(Addr) a_val;
di_fpscr_t di_fpscr __attribute__ ((__aligned__(8)));
union {
double d;
unsigned long long int lli;
unsigned int li[2];
} dlli;
a_val = query_auxv(AT_HWCAP);
if(a_val == -1)
{
puts ("querying the auxv for the hwcap failed");
_exit (1);
}
#if __WORDSIZE == 32
dlli.d = ctx[0].uc_mcontext.uc_regs->fpregs.fpscr;
#else
dlli.d = ctx[0].uc_mcontext.fp_regs[32];
#endif
puts("The FPSCR value saved in the ucontext_t is:");
/* Indicates a 64-bit FPSCR. */
if (a_val & PPC_FEATURE_HAS_DFP)
{
printf("0x%.16llx\n",dlli.lli);
di_fpscr = 0x0;
puts ("Clearing the 64-bit FPSCR to:");
printf("0x%.16llx\n",(unsigned long long int) di_fpscr);
_SET_DI_FPSCR(di_fpscr);
}
else
{
printf("0x%.8x\n",(unsigned int) dlli.li[1]);
di_fpscr = 0x0;
puts ("Clearing the 32-bit FPSCR to:");
printf("0x%.8lx\n",(unsigned long int) di_fpscr);
_SET_SI_FPSCR(di_fpscr);
}
}
void test_special_regs(int which)
{
ElfW(Addr) a_val;
unsigned long long int test;
di_fpscr_t di_fpscr __attribute__ ((__aligned__(8)));
a_val = query_auxv(AT_HWCAP);
if(a_val == -1)
{
puts ("querying the auxv for the hwcap failed");
_exit (2);
}
/* Indicates a 64-bit FPSCR. */
if (a_val & PPC_FEATURE_HAS_DFP)
{
_GET_DI_FPSCR(di_fpscr);
if (which == 0)
puts ("After setcontext the 64-bit FPSCR contains:");
else
puts ("After swapcontext the 64-bit FPSCR contains:");
printf("0x%.16llx\n",(unsigned long long int) di_fpscr);
test = (_FPSCR_TEST0_DRN | _FPSCR_TEST0_RN);
if((di_fpscr & (test)) != (test))
{
printf ("%s: DRN and RN bits set before getcontext were not preserved across [set|swap]context call: %m",__FUNCTION__);
_exit (3);
}
}
else
{
_GET_SI_FPSCR(di_fpscr);
if (which == 0)
puts ("After setcontext the 32-bit FPSCR contains:");
else
puts ("After swapcontext the 32-bit FPSCR contains:");
printf("0x%.8lx\n",(unsigned long int) di_fpscr);
test = _FPSCR_TEST0_RN;
if((di_fpscr & test) != test)
{
printf ("%s: RN bit set before getcontext was not preserved across [set|swap]context call: %m",__FUNCTION__);
_exit (4);
}
}
}
static void
check_called (void)
{
if (back_in_main == 0)
{
puts ("program did not reach main again");
_exit (5);
}
}
int
main (void)
{
atexit (check_called);
puts ("priming the FPSCR with a marker");
prime_special_regs (0);
puts ("making contexts");
if (getcontext (&ctx[0]) != 0)
{
if (errno == ENOSYS)
{
back_in_main = 1;
exit (0);
}
printf ("%s: getcontext: %m\n", __FUNCTION__);
exit (6);
}
/* Play some tricks with this context. */
if (++global == 1)
{
clear_special_regs ( );
if (setcontext (&ctx[0]) != 0)
{
printf ("%s: setcontext: %m\n", __FUNCTION__);
exit (7);
}
}
if (global != 2)
{
printf ("%s: 'global' not incremented twice\n", __FUNCTION__);
exit (8);
}
test_special_regs (0);
global = 0;
if (getcontext (&ctx[0]) != 0)
{
printf ("%s: getcontext: %m\n", __FUNCTION__);
exit (9);
}
if (++global == 1)
{
puts ("priming the FPSCR with a marker");
prime_special_regs (1);
puts ("swapping contexts");
if (swapcontext (&ctx[1], &ctx[0]) != 0)
{
printf ("%s: swapcontext: %m\n", __FUNCTION__);
exit (9);
}
}
if (global != 2)
{
printf ("%s: 'global' not incremented twice\n", __FUNCTION__);
exit (10);
}
test_special_regs (1);
puts ("back at main program");
back_in_main = 1;
puts ("test succeeded");
return 0;
}

8
sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
View File

@ -47,16 +47,16 @@ ENTRY (BP_SYM (__longjmp))
lwz r5,_rtld_global_ro@got(r5)
mtlr r6
cfi_same_value (lr)
lwz r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r5)
lwz r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r5)
# else
lwz r5,_dl_hwcap@got(r5)
mtlr r6
cfi_same_value (lr)
lwz r5,0(r5)
lwz r5,4(r5)
# endif
# else
lis r5,_dl_hwcap@ha
lwz r5,_dl_hwcap@l(r5)
lis r5,(_dl_hwcap+4)@ha
lwz r5,(_dl_hwcap+4)@l(r5)
# endif
andis. r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
beq L(no_vmx)

8
sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
View File

@ -98,14 +98,14 @@ ENTRY (BP_SYM (__sigsetjmp))
cfi_same_value (lr)
# ifdef SHARED
lwz r5,_rtld_global_ro@got(r5)
lwz r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r5)
lwz r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r5)
# else
lwz r5,_dl_hwcap@got(r5)
lwz r5,0(r5)
lwz r5,4(r5)
# endif
# else
lis r6,_dl_hwcap@ha
lwz r5,_dl_hwcap@l(r6)
lis r6,(_dl_hwcap+4)@ha
lwz r5,(_dl_hwcap+4)@l(r6)
# endif
andis. r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
beq L(no_vmx)

8
sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S
View File

@ -157,15 +157,15 @@ ENTRY(__CONTEXT_FUNC_NAME)
# ifdef SHARED
lwz r7,_rtld_global_ro@got(r7)
mtlr r8
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7)
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r7)
# else
lwz r7,_dl_hwcap@got(r7)
mtlr r8
lwz r7,0(r7)
lwz r7,4(r7)
# endif
# else
lis r7,_dl_hwcap@ha
lwz r7,_dl_hwcap@l(r7)
lis r7,(_dl_hwcap+4)@ha
lwz r7,(_dl_hwcap+4)@l(r7)
# endif
andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)

2
sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/setcontext.S Normal file
View File

@ -0,0 +1,2 @@
#define _ARCH_PWR6
#include_next <setcontext.S>

2
sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/swapcontext.S Normal file
View File

@ -0,0 +1,2 @@
#define _ARCH_PWR6
#include_next <swapcontext.S>

50
sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S
View File

@ -1,5 +1,5 @@
/* Jump to a new context powerpc32 common.
Copyright (C) 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2005, 2006, 2008 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
@ -71,33 +71,34 @@ ENTRY(__CONTEXT_FUNC_NAME)
cmpwi r3,0
bne 3f /* L(error_exit) */
#ifdef __CONTEXT_ENABLE_FPRS
# ifdef __CONTEXT_ENABLE_VRS
# ifdef PIC
#ifdef PIC
mflr r8
# ifdef HAVE_ASM_PPC_REL16
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,1f
1: mflr r7
addis r7,r7,_GLOBAL_OFFSET_TABLE_-1b@ha
addi r7,r7,_GLOBAL_OFFSET_TABLE_-1b@l
# else
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r7
# endif
# ifdef SHARED
# endif
# ifdef SHARED
lwz r7,_rtld_global_ro@got(r7)
mtlr r8
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7)
# else
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r7)
# else
lwz r7,_dl_hwcap@got(r7)
mtlr r8
lwz r7,0(r7)
# endif
# else
lis r7,_dl_hwcap@ha
lwz r7,_dl_hwcap@l(r7)
# endif
andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)
lwz r7,4(r7)
# endif
#else
lis r7,(_dl_hwcap+4)@ha
lwz r7,(_dl_hwcap+4)@l(r7)
#endif
#ifdef __CONTEXT_ENABLE_FPRS
# ifdef __CONTEXT_ENABLE_VRS
andis. r6,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)
la r10,(_UC_VREGS)(r31)
beq 2f /* L(has_no_vec) */
@ -199,7 +200,20 @@ ENTRY(__CONTEXT_FUNC_NAME)
/* Restore the floating-point registers */
lfd fp31,_UC_FREGS+(32*8)(r31)
lfd fp0,_UC_FREGS+(0*8)(r31)
mtfsf 0xff,fp31
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r7,PPC_FEATURE_HAS_DFP
beq 7f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp31,1,0
b 8f
/* Continue to operate on the FPSCR as if it were 32-bits. */
7: mtfsf 0xff,fp31
8:
# endif /* _ARCH_PWR6 */
lfd fp1,_UC_FREGS+(1*8)(r31)
lfd fp2,_UC_FREGS+(2*8)(r31)
lfd fp3,_UC_FREGS+(3*8)(r31)

58
sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
View File

@ -1,5 +1,5 @@
/* Save current context and jump to a new context.
Copyright (C) 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2005, 2006, 2008 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
@ -144,32 +144,33 @@ ENTRY(__CONTEXT_FUNC_NAME)
stfd fp31,_UC_FREGS+(31*8)(r3)
stfd fp0,_UC_FREGS+(32*8)(r3)
# ifdef __CONTEXT_ENABLE_VRS
# ifdef PIC
# ifdef PIC
mflr r8
# ifdef HAVE_ASM_PPC_REL16
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,1f
1: mflr r7
addis r7,r7,_GLOBAL_OFFSET_TABLE_-1b@ha
addi r7,r7,_GLOBAL_OFFSET_TABLE_-1b@l
# else
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r7
# endif
# ifdef SHARED
# endif
# ifdef SHARED
lwz r7,_rtld_global_ro@got(r7)
mtlr r8
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7)
# else
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r7)
# else
lwz r7,_dl_hwcap@got(r7)
mtlr r8
lwz r7,0(r7)
# endif
# else
lis r7,_dl_hwcap@ha
lwz r7,_dl_hwcap@l(r7)
lwz r7,4(r7)
# endif
andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)
# else
lis r7,(_dl_hwcap+4)@ha
lwz r7,(_dl_hwcap+4)@l(r7)
# endif
# ifdef __CONTEXT_ENABLE_VRS
andis. r6,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)
la r10,(_UC_VREGS)(r3)
la r9,(_UC_VREGS+16)(r3)
@ -305,8 +306,8 @@ ENTRY(__CONTEXT_FUNC_NAME)
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,5f
5: mflr r7
addis r7,r7,_GLOBAL_OFFSET_TABLE_-1b@ha
addi r7,r7,_GLOBAL_OFFSET_TABLE_-1b@l
addis r7,r7,_GLOBAL_OFFSET_TABLE_-5b@ha
addi r7,r7,_GLOBAL_OFFSET_TABLE_-5b@l
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r7
@ -314,14 +315,14 @@ ENTRY(__CONTEXT_FUNC_NAME)
mtlr r8
# ifdef SHARED
lwz r7,_rtld_global_ro@got(r7)
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7)
lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r7)
# else
lwz r7,_dl_hwcap@got(r7)
lwz r7,0(r7)
lwz r7,4(r7)
# endif
# else
lis r7,_dl_hwcap@ha
lwz r7,_dl_hwcap@l(r7)
lis r7,(_dl_hwcap+4)@ha
lwz r7,(_dl_hwcap+4)@l(r7)
# endif
andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16)
la r10,(_UC_VREGS)(r31)
@ -425,7 +426,20 @@ ENTRY(__CONTEXT_FUNC_NAME)
/* Restore the floating-point registers */
lfd fp31,_UC_FREGS+(32*8)(r31)
lfd fp0,_UC_FREGS+(0*8)(r31)
mtfsf 0xff,fp31
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r7,PPC_FEATURE_HAS_DFP
beq 7f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp31,1,0
b 8f
/* Continue to operate on the FPSCR as if it were 32-bits. */
7: mtfsf 0xff,fp31
8:
#endif /* _ARCH_PWR6 */
lfd fp1,_UC_FREGS+(1*8)(r31)
lfd fp2,_UC_FREGS+(2*8)(r31)
lfd fp3,_UC_FREGS+(3*8)(r31)

2
sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/setcontext.S Normal file
View File

@ -0,0 +1,2 @@
#define _ARCH_PWR6
#include_next <setcontext.S>

2
sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/swapcontext.S Normal file
View File

@ -0,0 +1,2 @@
#define _ARCH_PWR6
#include_next <swapcontext.S>

58
sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
View File

@ -1,5 +1,5 @@
/* Switch to context.
Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2002, 2004, 2005, 2006, 2008 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
@ -27,6 +27,15 @@
#include "ucontext_i.h"
#include <asm/errno.h>
.section ".toc","aw"
.LC__dl_hwcap:
#ifdef SHARED
.tc _rtld_global_ro[TC],_rtld_global_ro
#else
.tc _dl_hwcap[TC],_dl_hwcap
#endif
.section ".text"
#if SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)
ENTRY(__novec_setcontext)
CALL_MCOUNT 1
@ -62,10 +71,32 @@ ENTRY(__novec_setcontext)
cmpdi r3,0
bne L(nv_error_exit)
# ifdef SHARED
/* Load _rtld-global._dl_hwcap. */
ld r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r5)
# else
ld r5,0(r5) /* Load extern _dl_hwcap. */
# endif
lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r5,PPC_FEATURE_HAS_DFP
beq 5f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
b 6f
/* Continue to operate on the FPSCR as if it were 32-bits. */
5:
mtfsf 0xff,fp0
6:
# endif /* _ARCH_PWR6 */
lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)
@ -189,15 +220,7 @@ compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3)
#endif
.section ".toc","aw"
.LC__dl_hwcap:
#ifdef SHARED
.tc _rtld_global_ro[TC],_rtld_global_ro
#else
.tc _dl_hwcap[TC],_dl_hwcap
#endif
.section ".text"
.machine "altivec"
ENTRY(__setcontext)
CALL_MCOUNT 1
@ -241,7 +264,7 @@ ENTRY(__setcontext)
# else
ld r5,0(r5) /* Load extern _dl_hwcap. */
# endif
andis. r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
andis. r6,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
beq L(has_no_vec)
cmpdi r10,0
@ -346,7 +369,22 @@ L(has_no_vec):
lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r5,PPC_FEATURE_HAS_DFP
beq 7f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
b 8f
/* Continue to operate on the FPSCR as if it were 32-bits. */
7:
mtfsf 0xff,fp0
8:
# endif /* _ARCH_PWR6 */
lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)

58
sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
View File

@ -1,5 +1,5 @@
/* Save current context and install the given one.
Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2002, 2004, 2005, 2006, 2008 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
@ -27,7 +27,16 @@
#include "ucontext_i.h"
#include <asm/errno.h>
.section ".toc","aw"
.LC__dl_hwcap:
#ifdef SHARED
.tc _rtld_global_ro[TC],_rtld_global_ro
#else
.tc _dl_hwcap[TC],_dl_hwcap
#endif
#if SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)
.section ".text"
ENTRY(__novec_swapcontext)
CALL_MCOUNT 2
#ifdef __ASSUME_NEW_RT_SIGRETURN_SYSCALL
@ -157,10 +166,31 @@ ENTRY(__novec_swapcontext)
cmpdi r0,0
bne L(nv_do_sigret)
# ifdef SHARED
/* Load _rtld-global._dl_hwcap. */
ld r8,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r8)
# else
ld r8,0(r8) /* Load extern _dl_hwcap. */
# endif
lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r8,PPC_FEATURE_HAS_DFP
beq 5f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
b 6f
/* Continue to operate on the FPSCR as if it were 32-bits. */
5:
mtfsf 0xff,fp0
6:
#endif /* _ARCH_PWR6 */
lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)
@ -283,15 +313,7 @@ compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3)
#endif
.section ".toc","aw"
.LC__dl_hwcap:
#ifdef SHARED
.tc _rtld_global_ro[TC],_rtld_global_ro
#else
.tc _dl_hwcap[TC],_dl_hwcap
#endif
.section ".text"
.machine "altivec"
ENTRY(__swapcontext)
CALL_MCOUNT 2
@ -409,7 +431,7 @@ ENTRY(__swapcontext)
la r10,(SIGCONTEXT_V_RESERVE+8)(r3)
la r9,(SIGCONTEXT_V_RESERVE+24)(r3)
andis. r8,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16)
andis. r6,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16)
clrrdi r10,r10,4
beq L(has_no_vec)
@ -540,7 +562,7 @@ L(has_no_vec):
# else
ld r8,0(r8) /* Load extern _dl_hwcap. */
# endif
andis. r8,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16)
andis. r6,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16)
beq L(has_no_vec2)
cmpdi r10,0
@ -646,7 +668,21 @@ L(has_no_vec2):
lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
# ifdef _ARCH_PWR6
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
# else
/* Availability of DFP indicates a 64-bit FPSCR. */
andi. r6,r8,PPC_FEATURE_HAS_DFP
beq 7f
/* Use the extended four-operand version of the mtfsf insn. */
mtfsf 0xff,fp0,1,0
b 8f
/* Continue to operate on the FPSCR as if it were 32-bits. */
7:
mtfsf 0xff,fp0
8:
#endif /* _ARCH_PWR6 */
lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)