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Update.
1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au> * Makeconfig [!build-static]: Link `static' binaries with libc_pic.a. Still need *FLAGS-.o because we still sometimes build .o files. * db2/Makefile: Don't build libndbm.a if !build-static. 1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au> * configure.in: New test for broken gcc on PowerPC. * sysdeps/powerpc/atomicity.h: Use result of test. * linuxthreads/sysdeps/powerpc/pt-machine.h: Use result of test. * math/libm-test.c: Update many of the epsilon to match actual performance. * sysdeps/libm-ieee754/e_exp.c: Reduce the number of branches. * sysdeps/libm-ieee754/e_expf.c: Likewise. * sysdeps/libm-ieee754/s_exp2.c: Likewise. * sysdeps/libm-ieee754/s_exp2f.c: Likewise. * sysdeps/libm-ieee754/e_pow.c: Correct typo. * sysdeps/powerpc/elf/libc-start.c: New file. * sysdeps/powerpc/elf/start.S: New file, use libc-start. * sysdeps/powerpc/elf/start.c: Delete. * sysdeps/unix/sysv/linux/powerpc/Dist: Remove syscall.h * sysdeps/unix/sysv/linux/powerpc/syscall.h: Delete. It was unused. * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Correct previous few patches.
This commit is contained in:
Ulrich Drepper
parent
b22fc5f565
commit
6600049466
32
ChangeLog
32
ChangeLog
@ -1,3 +1,35 @@
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1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au>
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* Makeconfig [!build-static]: Link `static' binaries with libc_pic.a.
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Still need *FLAGS-.o because we still sometimes build .o files.
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* db2/Makefile: Don't build libndbm.a if !build-static.
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1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au>
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* configure.in: New test for broken gcc on PowerPC.
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* sysdeps/powerpc/atomicity.h: Use result of test.
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* linuxthreads/sysdeps/powerpc/pt-machine.h: Use result of test.
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* math/libm-test.c: Update many of the epsilon to match actual
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performance.
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* sysdeps/libm-ieee754/e_exp.c: Reduce the number of branches.
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* sysdeps/libm-ieee754/e_expf.c: Likewise.
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* sysdeps/libm-ieee754/s_exp2.c: Likewise.
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* sysdeps/libm-ieee754/s_exp2f.c: Likewise.
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* sysdeps/libm-ieee754/e_pow.c: Correct typo.
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* sysdeps/powerpc/elf/libc-start.c: New file.
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* sysdeps/powerpc/elf/start.S: New file, use libc-start.
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* sysdeps/powerpc/elf/start.c: Delete.
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* sysdeps/unix/sysv/linux/powerpc/Dist: Remove syscall.h
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* sysdeps/unix/sysv/linux/powerpc/syscall.h: Delete. It was unused.
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* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Correct previous
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few patches.
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1998-05-06 12:51 Ulrich Drepper <drepper@cygnus.com>
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* sysdeps/i386/fpu/bits/mathinline.h (pow): Use long long int for
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10
Makeconfig
10
Makeconfig
@ -440,8 +440,16 @@ endif
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endif
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# The static libraries.
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ifeq (yes,$(build-static))
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link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
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link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
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else
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ifeq (yes,$(build-shared))
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# We can try to link the programs with lib*_pic.a...
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link-libc-static = $(link-libc) $(common-objpfx)libc_pic.a
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link-extra-libs-static = $(link-extra-libs)
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endif
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endif
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ifndef gnulib
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gnulib := -lgcc
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@ -584,9 +592,9 @@ endif
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libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
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all-object-suffixes := .o .os .op .og .ob .oS
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object-suffixes :=
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ifeq (yes,$(build-static))
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CPPFLAGS-.o = $(pic-default)
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CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
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ifeq (yes,$(build-static))
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libtype.o := lib%.a
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object-suffixes += .o
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endif
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@ -59,10 +59,14 @@
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with static variable. */
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#undef HAVE_DWARF2_UNWIND_INFO_STATIC
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/* Define is the regparm attribute shall be used for local functions
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/* Define if the regparm attribute shall be used for local functions
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(gcc on ix86 only). */
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#undef USE_REGPARMS
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/* Defined on PowerPC if the GCC being used has a problem with clobbering
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certain registers (CR0, MQ, CTR, LR) in asm statements. */
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#undef BROKEN_PPC_ASM_CR0
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/* Defined to some form of __attribute__ ((...)) if the compiler supports
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a different, more efficient calling convention. */
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12
configure.in
12
configure.in
@ -921,6 +921,18 @@ else
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fi
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fi
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if test "$host_cpu" = powerpc ; then
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# Check for a bug present in at least versions 2.8.x of GCC
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# and versions 1.0.x of EGCS.
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AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
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AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
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libc_cv_c_asmcr0_bug='no',
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libc_cv_c_asmcr0_bug='yes')])
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if test "$libc_cv_c_asmcr0_bug" != 'no'; then
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AC_DEFINE(BROKEN_PPC_ASM_CR0)
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fi
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fi
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AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
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[cat > conftest.c <<EOF
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#line __oline__ "configure"
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@ -111,9 +111,11 @@ endif
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# Depend on libc.so so a DT_NEEDED is generated in the shared objects.
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$(objpfx)libdb.so: $(common-objpfx)libc.so
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ifeq ($(build-static),yes)
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subdir_install: $(inst_libdir)/libndbm.a
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$(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a $(+force)
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$(make-link)
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endif
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ifeq ($(build-shared),yes)
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subdir_install: $(inst_libdir)/libndbm.so
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@ -1,6 +1,6 @@
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/* Machine-dependent pthreads configuration and inline functions.
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powerpc version.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@tamu.edu>.
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@ -32,7 +32,12 @@
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#endif
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/* Spinlock implementation; required. */
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extern inline int
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#if BROKEN_PPC_ASM_CR0
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static
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#else
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extern inline
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#endif
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int
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testandset (int *spinlock)
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{
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int ret;
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@ -63,7 +68,12 @@ register char * stack_pointer __asm__ ("r1");
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/* note that test-and-set(x) is the same as compare-and-swap(x, 0, 1) */
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#define HAS_COMPARE_AND_SWAP
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extern inline int
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#if BROKEN_PPC_ASM_CR0
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static
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#else
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extern inline
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#endif
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int
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__compare_and_swap (int *p, int oldval, int newval)
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{
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int ret;
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@ -1072,7 +1072,7 @@ cbrt_test (void)
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check_eps ("cbrt (-27) == -3", FUNC(cbrt) (-27.0), -3.0,
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CHOOSE (3e-16L, 5e-16, 0));
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check_eps ("cbrt (0.970299) == 0.99", FUNC(cbrt) (0.970299), 0.99,
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CHOOSE (2e-17L, 0, 0));
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CHOOSE (2e-17L, 2e-16, 0));
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check_eps ("cbrt (0.7) == .8879040017...", FUNC(cbrt) (0.7),
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0.8879040017426007084L, CHOOSE(2e-17L, 6e-16, 0));
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@ -1113,7 +1113,7 @@ cos_test (void)
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0, CHOOSE (1e-19L, 1e-16L, 1e-7L));
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check_eps ("cos (0.7) == 0.7648421872...", FUNC(cos) (0.7),
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0.7648421872844884262L, CHOOSE(3e-17, 2e-16, 0));
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0.7648421872844884262L, CHOOSE(3e-17, 2e-16, 6e-8));
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}
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static void
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@ -1608,7 +1608,7 @@ log10_test (void)
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check_eps ("log10 (e) == M_LOG10E", FUNC(log10) (M_El), M_LOG10El,
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CHOOSE (1e-18, 0, 9e-8));
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check_eps ("log10 (0.7) == -0.1549019599...", FUNC(log10) (0.7),
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-0.15490195998574316929L, CHOOSE(3e-17L, 3e-17, 0));
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-0.15490195998574316929L, CHOOSE(3e-17L, 3e-17, 2e-8));
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}
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@ -1857,7 +1857,7 @@ sinh_test (void)
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#endif
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check_eps ("sinh (0.7) == 0.7585837018...", FUNC(sinh) (0.7),
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0.75858370183953350346L, CHOOSE(6e-17L, 0, 6e-8));
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0.75858370183953350346L, CHOOSE(6e-17L, 2e-16, 6e-8));
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}
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@ -1914,7 +1914,7 @@ sincos_test (void)
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check_eps ("sincos (0.7, &sin, &cos) puts 0.6442176872... in sin", sin_res,
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0.64421768723769105367L, CHOOSE(4e-17L, 0, 0));
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check_eps ("sincos (0.7, &sin, &cos) puts 0.7648421872... in cos", cos_res,
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0.76484218728448842626L, CHOOSE(3e-17L, 2e-16, 0));
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0.76484218728448842626L, CHOOSE(3e-17L, 2e-16, 6e-8));
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}
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@ -1946,7 +1946,7 @@ tanh_test (void)
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check ("tanh (-inf) == -1", FUNC(tanh) (minus_infty), -1);
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#endif
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check_eps ("tanh (0.7) == 0.6043677771...", FUNC(tanh) (0.7),
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0.60436777711716349631L, CHOOSE(3e-17L, 0, 6e-8));
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0.60436777711716349631L, CHOOSE(3e-17L, 2e-16, 6e-8));
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}
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@ -3437,7 +3437,7 @@ ccosh_test (void)
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check_eps ("real(ccosh(0.7 + i 1.2)) == 0.45482...", __real__ result,
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0.4548202223691477654L, CHOOSE(5e-17L, 6e-17, 9e-8));
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check_eps ("imag(ccosh(0.7 + i 1.2)) == 0.70702...", __imag__ result,
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0.7070296600921537682L, CHOOSE(7e-17L, 0, 0));
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0.7070296600921537682L, CHOOSE(7e-17L, 2e-16, 0));
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result = FUNC(ccosh) (BUILD_COMPLEX (-2, -3));
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check_eps ("real(ccosh(-2 - i 3)) == -3.72454...", __real__ result,
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@ -3579,7 +3579,7 @@ cacos_test (void)
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check_eps ("real(cacos(0.7 + i 1.2)) == 1.13518...", __real__ result,
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1.1351827477151551089L, CHOOSE(2e-17L, 3e-16, 2e-7));
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check_eps ("imag(cacos(0.7 + i 1.2)) == -1.09276...", __imag__ result,
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-1.0927647857577371459L, CHOOSE(4e-17L, 0, 3e-7));
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-1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 3e-7));
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result = FUNC(cacos) (BUILD_COMPLEX (-2, -3));
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check_eps ("real(cacos(-2 - i 3)) == 2.14144...", __real__ result,
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@ -3717,7 +3717,7 @@ cacosh_test (void)
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result = FUNC(cacosh) (BUILD_COMPLEX (0.7, 1.2));
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check_eps ("real(cacosh(0.7 + i 1.2)) == 1.09276...", __real__ result,
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1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 0));
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1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 2e-7));
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check_eps ("imag(cacosh(0.7 + i 1.2)) == 1.13518...", __imag__ result,
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1.1351827477151551089L, CHOOSE(2e-17L, 0, 0));
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@ -3864,7 +3864,7 @@ casin_test (void)
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check_eps ("real(casin(0.7 + i 1.2)) == 0.43561...", __real__ result,
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0.4356135790797415103L, CHOOSE(2e-17L, 2e-16, 2e-7));
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check_eps ("imag(casin(0.7 + i 1.2)) == 1.09276...", __imag__ result,
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1.0927647857577371459L, CHOOSE(4e-17L, 0, 3e-7));
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1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 3e-7));
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result = FUNC(casin) (BUILD_COMPLEX (-2, -3));
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check_eps ("real(casin(-2 - i 3)) == -0.57065...", __real__ result,
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@ -4157,13 +4157,13 @@ catan_test (void)
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result = FUNC(catan) (BUILD_COMPLEX (0.7, 1.2));
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check_eps ("real(catan(0.7 + i 1.2)) == 1.07857...", __real__ result,
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1.0785743834118921877L, CHOOSE (3e-17, 0, 0));
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1.0785743834118921877L, CHOOSE (3e-17, 0, 5e-7));
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check_eps ("imag(catan(0.7 + i 1.2)) == 0.57705...", __imag__ result,
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0.5770573776534306764L, CHOOSE(3e-17L, 0, 6e-8));
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0.5770573776534306764L, CHOOSE(3e-17L, 2e-16, 6e-8));
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result = FUNC(catan) (BUILD_COMPLEX (-2, -3));
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check ("real(catan(-2 - i 3)) == -1.40992...", __real__ result,
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-1.4099210495965755225L);
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check_eps ("real(catan(-2 - i 3)) == -1.40992...", __real__ result,
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-1.4099210495965755225L, CHOOSE(0, 0, 4e-7));
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check_eps ("imag(catan(-2 - i 3)) == -0.22907...", __imag__ result,
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-0.2290726829685387662L, CHOOSE(1.1e-19L, 3e-17, 2e-8));
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}
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@ -4309,13 +4309,13 @@ catanh_test (void)
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check_eps ("real(catanh(0.7 + i 1.2)) == 0.26007...", __real__ result,
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0.2600749516525135959L, CHOOSE (2e-18, 6e-17, 0));
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check_eps ("imag(catanh(0.7 + i 1.2)) == 0.97024...", __imag__ result,
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0.9702403077950989849L, CHOOSE (3e-17, 0, 0));
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0.9702403077950989849L, CHOOSE (3e-17, 2e-16, 4e-7));
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result = FUNC(catanh) (BUILD_COMPLEX (-2, -3));
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check_eps ("real(catanh(-2 - i 3)) == -0.14694...", __real__ result,
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-0.1469466662255297520L, CHOOSE (9e-20L, 6e-17, 2e-8));
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-0.1469466662255297520L, CHOOSE (9e-20L, 2e-16, 2e-8));
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check_eps ("imag(catanh(-2 - i 3)) == -1.33897...", __imag__ result,
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-1.3389725222944935611L, CHOOSE (7e-19L, 0, 0));
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-1.3389725222944935611L, CHOOSE (7e-19L, 0, 5e-7));
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}
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|
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@ -4459,11 +4459,11 @@ ctan_test (void)
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check_eps ("real(ctan(0.7 + i 1.2)) == 0.17207...", __real__ result,
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0.1720734197630349001L, CHOOSE(1e-17L, 3e-17, 2e-8));
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check_eps ("imag(ctan(0.7 + i 1.2)) == 0.95448...", __imag__ result,
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0.9544807059989405538L, CHOOSE(2e-17L, 2e-16, 0));
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0.9544807059989405538L, CHOOSE(2e-17L, 2e-16, 6e-8));
|
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result = FUNC(ctan) (BUILD_COMPLEX (-2, -3));
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check_eps ("real(ctan(-2 - i 3)) == -0.00376...", __real__ result,
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0.0037640256415042482L, CHOOSE(1e-19L, 0, 0));
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0.0037640256415042482L, CHOOSE(1e-19L, 5e-19, 0));
|
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check_eps ("imag(ctan(-2 - i 3)) == -1.00323...", __imag__ result,
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-1.0032386273536098014L, CHOOSE(2e-19L, 0, 2e-7));
|
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}
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@ -4610,15 +4610,15 @@ ctanh_test (void)
|
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result = FUNC(ctanh) (BUILD_COMPLEX (0.7, 1.2));
|
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check_eps ("real(ctanh(0.7 + i 1.2)) == 1.34721...", __real__ result,
|
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1.3472197399061191630L, CHOOSE(4e-17L, 3e-16, 2e-7));
|
||||
1.3472197399061191630L, CHOOSE(4e-17L, 5e-16, 2e-7));
|
||||
check_eps ("imag(ctanh(0.7 + i 1.2)) == -0.47786...", __imag__ result,
|
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0.4778641038326365540L, CHOOSE(9e-17L, 6e-17, 9e-8));
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0.4778641038326365540L, CHOOSE(9e-17L, 2e-16, 9e-8));
|
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|
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result = FUNC(ctanh) (BUILD_COMPLEX (-2, -3));
|
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check_eps ("real(ctanh(-2 - i 3)) == -0.96538...", __real__ result,
|
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-0.9653858790221331242L, CHOOSE(2e-19L, 0, 0));
|
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-0.9653858790221331242L, CHOOSE(2e-19L, 2e-16, 2e-7));
|
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check_eps ("imag(ctanh(-2 - i 3)) == 0.00988...", __imag__ result,
|
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0.0098843750383224937L, CHOOSE(7e-20L, 0, 1e-9));
|
||||
0.0098843750383224937L, CHOOSE(7e-20L, 2e-16, 1e-9));
|
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}
|
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|
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@ -4786,7 +4786,7 @@ clog_test (void)
|
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check_eps ("real(clog(-2 - i 3)) == 1.28247...", __real__ result,
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1.2824746787307683680L, CHOOSE(3e-19L, 0, 0));
|
||||
check_eps ("imag(clog(-2 - i 3)) == -2.15879...", __imag__ result,
|
||||
-2.1587989303424641704L, CHOOSE(2e-18L, 0, 0));
|
||||
-2.1587989303424641704L, CHOOSE(2e-18L, 5e-16, 8e-7));
|
||||
}
|
||||
|
||||
|
||||
@ -4968,7 +4968,7 @@ clog10_test (void)
|
||||
check_eps ("real(clog10(-2 - i 3)) == 0.55697...", __real__ result,
|
||||
0.5569716761534183846L, CHOOSE(6e-20L, 0, 0));
|
||||
check_eps ("imag(clog10(-2 - i 3)) == -0.93755...", __imag__ result,
|
||||
-0.9375544629863747085L, CHOOSE (7e-19L, 2e-16, 0));
|
||||
-0.9375544629863747085L, CHOOSE (7e-19L, 2e-16, 3e-7));
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -76,8 +76,8 @@ __ieee754_exp (double x)
|
||||
/* Check for usual case. */
|
||||
if (isless (x, himark) && isgreater (x, lomark))
|
||||
{
|
||||
static const double TWO43 = 8796093022208.0;
|
||||
static const double TWO52 = 4503599627370496.0;
|
||||
static const double THREEp42 = 13194139533312.0;
|
||||
static const double THREEp51 = 6755399441055744.0;
|
||||
/* 1/ln(2). */
|
||||
static const double M_1_LN2 = 1.442695040888963387;
|
||||
/* ln(2), part 1 */
|
||||
@ -94,40 +94,22 @@ __ieee754_exp (double x)
|
||||
fesetround (FE_TONEAREST);
|
||||
|
||||
/* Calculate n. */
|
||||
if (x >= 0)
|
||||
{
|
||||
n = x * M_1_LN2 + TWO52;
|
||||
n -= TWO52;
|
||||
}
|
||||
else
|
||||
{
|
||||
n = x * M_1_LN2 - TWO52;
|
||||
n += TWO52;
|
||||
}
|
||||
n = x * M_1_LN2 + THREEp51;
|
||||
n -= THREEp51;
|
||||
x = x - n*M_LN2_0;
|
||||
if (x >= 0)
|
||||
{
|
||||
/* Calculate t/512. */
|
||||
t = x + TWO43;
|
||||
t -= TWO43;
|
||||
x -= t;
|
||||
|
||||
/* Compute tval = t. */
|
||||
tval = (int) (t * 512.0);
|
||||
/* Calculate t/512. */
|
||||
t = x + THREEp42;
|
||||
t -= THREEp42;
|
||||
x -= t;
|
||||
|
||||
x -= __exp_deltatable[tval];
|
||||
}
|
||||
/* Compute tval = t. */
|
||||
tval = (int) (t * 512.0);
|
||||
|
||||
if (t >= 0)
|
||||
x -= __exp_deltatable[tval];
|
||||
else
|
||||
{
|
||||
/* As above, but x is negative. */
|
||||
t = x - TWO43;
|
||||
t += TWO43;
|
||||
x -= t;
|
||||
|
||||
tval = (int) (t * 512.0);
|
||||
|
||||
x += __exp_deltatable[-tval];
|
||||
}
|
||||
x += __exp_deltatable[-tval];
|
||||
|
||||
/* Now, the variable x contains x + n*ln(2)_1. */
|
||||
dely = n*M_LN2_1;
|
||||
|
||||
@ -71,8 +71,8 @@ __ieee754_expf (float x)
|
||||
/* Check for usual case. */
|
||||
if (isless (x, himark) && isgreater (x, lomark))
|
||||
{
|
||||
static const float TWO43 = 8796093022208.0;
|
||||
static const float TWO23 = 8388608.0;
|
||||
static const float THREEp42 = 13194139533312.0;
|
||||
static const float THREEp22 = 12582912.0;
|
||||
/* 1/ln(2). */
|
||||
#undef M_1_LN2
|
||||
static const float M_1_LN2 = 1.44269502163f;
|
||||
@ -90,40 +90,22 @@ __ieee754_expf (float x)
|
||||
fesetround (FE_TONEAREST);
|
||||
|
||||
/* Calculate n. */
|
||||
if (x >= 0)
|
||||
{
|
||||
n = x * M_1_LN2 + TWO23;
|
||||
n -= TWO23;
|
||||
}
|
||||
else
|
||||
{
|
||||
n = x * M_1_LN2 - TWO23;
|
||||
n += TWO23;
|
||||
}
|
||||
n = x * M_1_LN2 + THREEp22;
|
||||
n -= THREEp22;
|
||||
dx = x - n*M_LN2;
|
||||
if (dx >= 0)
|
||||
{
|
||||
/* Calculate t/512. */
|
||||
t = dx + TWO43;
|
||||
t -= TWO43;
|
||||
dx -= t;
|
||||
|
||||
/* Compute tval = t. */
|
||||
tval = (int) (t * 512.0);
|
||||
/* Calculate t/512. */
|
||||
t = dx + THREEp42;
|
||||
t -= THREEp42;
|
||||
dx -= t;
|
||||
|
||||
delta = - __exp_deltatable[tval];
|
||||
}
|
||||
/* Compute tval = t. */
|
||||
tval = (int) (t * 512.0);
|
||||
|
||||
if (t >= 0)
|
||||
delta = - __exp_deltatable[tval];
|
||||
else
|
||||
{
|
||||
/* As above, but x is negative. */
|
||||
t = dx - TWO43;
|
||||
t += TWO43;
|
||||
dx -= t;
|
||||
|
||||
tval = (int) (t * 512.0);
|
||||
|
||||
delta = __exp_deltatable[-tval];
|
||||
}
|
||||
delta = __exp_deltatable[-tval];
|
||||
|
||||
/* Compute ex2 = 2^n e^(t/512+delta[t]). */
|
||||
ex2_u.d = __exp_atable[tval+177];
|
||||
|
||||
@ -48,7 +48,7 @@ __ieee754_exp2 (double x)
|
||||
/* Check for usual case. */
|
||||
if (isless (x, himark) && isgreater (x, lomark))
|
||||
{
|
||||
static const double TWO43 = 8796093022208.0;
|
||||
static const double THREEp42 = 13194139533312.0;
|
||||
int tval, unsafe;
|
||||
double rx, x22, result;
|
||||
union ieee754_double ex2_u, scale_u;
|
||||
@ -66,16 +66,8 @@ __ieee754_exp2 (double x)
|
||||
x = ex + t/512 + x1.
|
||||
|
||||
First, calculate rx = ex + t/512. */
|
||||
if (x >= 0)
|
||||
{
|
||||
rx = x + TWO43;
|
||||
rx -= TWO43;
|
||||
}
|
||||
else
|
||||
{
|
||||
rx = x - TWO43;
|
||||
rx += TWO43;
|
||||
}
|
||||
rx = x + THREEp42;
|
||||
rx -= THREEp42;
|
||||
x -= rx; /* Compute x=x1. */
|
||||
/* Compute tval = (ex*512 + t)+256.
|
||||
Now, t = (tval mod 512)-256 and ex=tval/512 [that's mod, NOT %; and
|
||||
|
||||
@ -49,7 +49,7 @@ __ieee754_exp2f (float x)
|
||||
/* Check for usual case. */
|
||||
if (isless (x, himark) && isgreater (x, lomark))
|
||||
{
|
||||
static const float TWO15 = 32768.0;
|
||||
static const float THREEp14 = 49152.0;
|
||||
int tval, unsafe;
|
||||
float rx, x22, result;
|
||||
union ieee754_float ex2_u, scale_u;
|
||||
@ -67,16 +67,8 @@ __ieee754_exp2f (float x)
|
||||
x = ex + t/512 + x1.
|
||||
|
||||
First, calculate rx = ex + t/256. */
|
||||
if (x >= 0)
|
||||
{
|
||||
rx = x + TWO15;
|
||||
rx -= TWO15;
|
||||
}
|
||||
else
|
||||
{
|
||||
rx = x - TWO15;
|
||||
rx += TWO15;
|
||||
}
|
||||
rx = x + THREEp14;
|
||||
rx -= THREEp14;
|
||||
x -= rx; /* Compute x=x1. */
|
||||
/* Compute tval = (ex*256 + t)+128.
|
||||
Now, t = (tval mod 256)-128 and ex=tval/256 [that's mod, NOT %; and
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/* Low-level functions for atomic operations. PowerPC version.
|
||||
Copyright (C) 1997 Free Software Foundation, Inc.
|
||||
Copyright (C) 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
|
||||
@ -22,7 +22,13 @@
|
||||
|
||||
#include <inttypes.h>
|
||||
|
||||
static inline int
|
||||
#if BROKEN_PPC_ASM_CR0
|
||||
# define __ATOMICITY_INLINE /* nothing */
|
||||
#else
|
||||
# define __ATOMICITY_INLINE inline
|
||||
#endif
|
||||
|
||||
static __ATOMICITY_INLINE int
|
||||
__attribute__ ((unused))
|
||||
exchange_and_add (volatile uint32_t *mem, int val)
|
||||
{
|
||||
@ -36,7 +42,7 @@ exchange_and_add (volatile uint32_t *mem, int val)
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline void
|
||||
static __ATOMICITY_INLINE void
|
||||
__attribute__ ((unused))
|
||||
atomic_add (volatile uint32_t *mem, int val)
|
||||
{
|
||||
@ -49,7 +55,7 @@ atomic_add (volatile uint32_t *mem, int val)
|
||||
" : "=&r"(tmp) : "r" (mem), "r"(val) : "cr0");
|
||||
}
|
||||
|
||||
static inline int
|
||||
static __ATOMICITY_INLINE int
|
||||
__attribute__ ((unused))
|
||||
compare_and_swap (volatile long int *p, long int oldval, long int newval)
|
||||
{
|
||||
@ -66,7 +72,7 @@ compare_and_swap (volatile long int *p, long int oldval, long int newval)
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline long int
|
||||
static __ATOMICITY_INLINE long int
|
||||
__attribute__ ((unused))
|
||||
always_swap (volatile long int *p, long int newval)
|
||||
{
|
||||
@ -79,7 +85,7 @@ always_swap (volatile long int *p, long int newval)
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline int
|
||||
static __ATOMICITY_INLINE int
|
||||
__attribute__ ((unused))
|
||||
test_and_set (volatile long int *p, long int oldval, long int newval)
|
||||
{
|
||||
|
||||
100
sysdeps/powerpc/elf/libc-start.c
Normal file
100
sysdeps/powerpc/elf/libc-start.c
Normal file
@ -0,0 +1,100 @@
|
||||
/* Copyright (C) 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 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 <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <elf/ldsodefs.h>
|
||||
|
||||
extern void __libc_init_first (int argc, char **argv, char **envp);
|
||||
|
||||
extern int _dl_starting_up;
|
||||
weak_extern (_dl_starting_up)
|
||||
extern int __libc_multiple_libcs;
|
||||
|
||||
struct startup_info
|
||||
{
|
||||
void *sda_base;
|
||||
int (*main) (int, char **, char **, void *);
|
||||
int (*init) (int, char **, char **, void *);
|
||||
void (*fini) (void);
|
||||
};
|
||||
|
||||
int
|
||||
__libc_start_main (int argc, char **argv, char **envp,
|
||||
void *auxvec, void (*rtld_fini) (void),
|
||||
struct startup_info *stinfo,
|
||||
char **stack_on_entry)
|
||||
{
|
||||
#ifndef PIC
|
||||
/* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
|
||||
If the address would be taken inside the expression the optimizer
|
||||
would try to be too smart and throws it away. Grrr. */
|
||||
int *dummy_addr = &_dl_starting_up;
|
||||
|
||||
__libc_multiple_libcs = dummy_addr && !_dl_starting_up;
|
||||
#endif
|
||||
|
||||
/* the PPC SVR4 ABI says that the top thing on the stack will
|
||||
be a NULL pointer, so if not we assume that we're being called
|
||||
as a statically-linked program by Linux... */
|
||||
if (*stack_on_entry != NULL)
|
||||
{
|
||||
/* ...in which case, we have argc as the top thing on the
|
||||
stack, followed by argv (NULL-terminated), envp (likewise),
|
||||
and the auxilary vector. */
|
||||
argc = *(int *) stack_on_entry;
|
||||
argv = stack_on_entry + 1;
|
||||
envp = argv + argc + 1;
|
||||
auxvec = envp;
|
||||
while (*(char **) auxvec != NULL)
|
||||
++auxvec;
|
||||
++auxvec;
|
||||
rtld_fini = NULL;
|
||||
}
|
||||
|
||||
/* Register the destructor of the dynamic linker if there is any. */
|
||||
if (rtld_fini != NULL)
|
||||
atexit (rtld_fini);
|
||||
|
||||
/* Set the global _environ variable correctly. */
|
||||
__environ = envp;
|
||||
|
||||
/* Call the initializer of the libc. */
|
||||
#ifdef PIC
|
||||
if (_dl_debug_impcalls)
|
||||
_dl_debug_message (1, "\ninitialize libc\n\n", NULL);
|
||||
#endif
|
||||
__libc_init_first (argc, argv, envp);
|
||||
|
||||
/* Call the initializer of the program. */
|
||||
#ifdef PIC
|
||||
if (_dl_debug_impcalls)
|
||||
_dl_debug_message (1, "\ninitialize program: ", argv[0], "\n\n", NULL);
|
||||
#endif
|
||||
stinfo->init (argc, argv, __environ, auxvec);
|
||||
|
||||
/* Register the destructor of the program. */
|
||||
atexit (stinfo->fini);
|
||||
|
||||
#ifdef PIC
|
||||
if (_dl_debug_impcalls)
|
||||
_dl_debug_message (1, "\ntransferring control: ", argv[0], "\n\n", NULL);
|
||||
#endif
|
||||
|
||||
exit (stinfo->main (argc, argv, __environ, auxvec));
|
||||
}
|
||||
53
sysdeps/powerpc/elf/start.S
Normal file
53
sysdeps/powerpc/elf/start.S
Normal file
@ -0,0 +1,53 @@
|
||||
/* Startup code for programs linked with GNU libc.
|
||||
Copyright (C) 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 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>
|
||||
|
||||
/* These are the various addresses we require. */
|
||||
.section ".rodata"
|
||||
.align 2
|
||||
L(start_addresses):
|
||||
.long _SDA_BASE_
|
||||
.long JUMPTARGET(main)
|
||||
.long JUMPTARGET(_init)
|
||||
.long JUMPTARGET(_fini)
|
||||
ASM_SIZE_DIRECTIVE(L(start_addresses))
|
||||
|
||||
.section ".text"
|
||||
ENTRY(_start)
|
||||
/* Save the stack pointer, in case we're statically linked under Linux. */
|
||||
mr %r9,%r1
|
||||
/* Set up an initial stack frame, and clear the LR. */
|
||||
clrrwi %r1,%r1,4
|
||||
li %r0,0
|
||||
stwu %r1,-16(%r1)
|
||||
mtlr %r0
|
||||
stw %r0,0(%r1)
|
||||
/* Set r13 to point at the 'small data area', and put the address of
|
||||
start_addresses in r8... */
|
||||
lis %r8,L(start_addresses)@ha
|
||||
lwzu %r13,L(start_addresses)@l(%r8)
|
||||
/* and continue in libc-start, in glibc. */
|
||||
b JUMPTARGET(__libc_start_main)
|
||||
END(_start)
|
||||
|
||||
/* Define a symbol for the first piece of initialized data. */
|
||||
.section ".data"
|
||||
__data_start:
|
||||
weak_alias (__data_start, data_start)
|
||||
@ -3,4 +3,3 @@ clone.S
|
||||
kernel_stat.h
|
||||
kernel_termios.h
|
||||
init-first.h
|
||||
syscall.h
|
||||
|
||||
Loading…
Reference in New Issue
Block a user