diff options
| -rw-r--r-- | ChangeLog | 32 | ||||
| -rw-r--r-- | Makeconfig | 10 | ||||
| -rw-r--r-- | config.h.in | 6 | ||||
| -rw-r--r-- | configure.in | 12 | ||||
| -rw-r--r-- | db2/Makefile | 2 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/powerpc/pt-machine.h | 16 | ||||
| -rw-r--r-- | math/libm-test.c | 50 | ||||
| -rw-r--r-- | sysdeps/libm-ieee754/e_exp.c | 48 | ||||
| -rw-r--r-- | sysdeps/libm-ieee754/e_expf.c | 48 | ||||
| -rw-r--r-- | sysdeps/libm-ieee754/s_exp2.c | 14 | ||||
| -rw-r--r-- | sysdeps/libm-ieee754/s_exp2f.c | 14 | ||||
| -rw-r--r-- | sysdeps/powerpc/atomicity.h | 18 | ||||
| -rw-r--r-- | sysdeps/powerpc/elf/libc-start.c | 100 | ||||
| -rw-r--r-- | sysdeps/powerpc/elf/start.S | 53 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/Dist | 1 |
15 files changed, 299 insertions, 125 deletions
diff --git a/ChangeLog b/ChangeLog index cdc8c2e0e8..803811de6c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,35 @@ +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. + 1998-05-06 12:51 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/fpu/bits/mathinline.h (pow): Use long long int for diff --git a/Makeconfig b/Makeconfig index 1a93b0aefd..1948e79512 100644 --- a/Makeconfig +++ b/Makeconfig @@ -440,8 +440,16 @@ endif endif # The static libraries. +ifeq (yes,$(build-static)) link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) +else +ifeq (yes,$(build-shared)) +# We can try to link the programs with lib*_pic.a... +link-libc-static = $(link-libc) $(common-objpfx)libc_pic.a +link-extra-libs-static = $(link-extra-libs) +endif +endif ifndef gnulib gnulib := -lgcc @@ -584,9 +592,9 @@ endif libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o)) all-object-suffixes := .o .os .op .og .ob .oS object-suffixes := -ifeq (yes,$(build-static)) CPPFLAGS-.o = $(pic-default) CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) +ifeq (yes,$(build-static)) libtype.o := lib%.a object-suffixes += .o endif diff --git a/config.h.in b/config.h.in index 8cee659dfa..f15e5c7b06 100644 --- a/config.h.in +++ b/config.h.in @@ -59,10 +59,14 @@ with static variable. */ #undef HAVE_DWARF2_UNWIND_INFO_STATIC -/* Define is the regparm attribute shall be used for local functions +/* Define if the regparm attribute shall be used for local functions (gcc on ix86 only). */ #undef USE_REGPARMS +/* Defined on PowerPC if the GCC being used has a problem with clobbering + certain registers (CR0, MQ, CTR, LR) in asm statements. */ +#undef BROKEN_PPC_ASM_CR0 + /* Defined to some form of __attribute__ ((...)) if the compiler supports a different, more efficient calling convention. */ diff --git a/configure.in b/configure.in index e7dfcc59a3..9866d4b8aa 100644 --- a/configure.in +++ b/configure.in @@ -921,6 +921,18 @@ else fi fi +if test "$host_cpu" = powerpc ; then +# Check for a bug present in at least versions 2.8.x of GCC +# and versions 1.0.x of EGCS. +AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl +AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, + libc_cv_c_asmcr0_bug='no', + libc_cv_c_asmcr0_bug='yes')]) +if test "$libc_cv_c_asmcr0_bug" != 'no'; then + AC_DEFINE(BROKEN_PPC_ASM_CR0) +fi +fi + AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, [cat > conftest.c <<EOF #line __oline__ "configure" diff --git a/db2/Makefile b/db2/Makefile index 594b802861..35c67dadfe 100644 --- a/db2/Makefile +++ b/db2/Makefile @@ -111,9 +111,11 @@ endif # Depend on libc.so so a DT_NEEDED is generated in the shared objects. $(objpfx)libdb.so: $(common-objpfx)libc.so +ifeq ($(build-static),yes) subdir_install: $(inst_libdir)/libndbm.a $(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a $(+force) $(make-link) +endif ifeq ($(build-shared),yes) subdir_install: $(inst_libdir)/libndbm.so diff --git a/linuxthreads/sysdeps/powerpc/pt-machine.h b/linuxthreads/sysdeps/powerpc/pt-machine.h index a08828b322..a52af8a7eb 100644 --- a/linuxthreads/sysdeps/powerpc/pt-machine.h +++ b/linuxthreads/sysdeps/powerpc/pt-machine.h @@ -1,6 +1,6 @@ /* Machine-dependent pthreads configuration and inline functions. powerpc version. - Copyright (C) 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson <rth@tamu.edu>. @@ -32,7 +32,12 @@ #endif /* Spinlock implementation; required. */ -extern inline int +#if BROKEN_PPC_ASM_CR0 +static +#else +extern inline +#endif +int testandset (int *spinlock) { int ret; @@ -63,7 +68,12 @@ register char * stack_pointer __asm__ ("r1"); /* note that test-and-set(x) is the same as compare-and-swap(x, 0, 1) */ #define HAS_COMPARE_AND_SWAP -extern inline int +#if BROKEN_PPC_ASM_CR0 +static +#else +extern inline +#endif +int __compare_and_swap (int *p, int oldval, int newval) { int ret; diff --git a/math/libm-test.c b/math/libm-test.c index 8ec4f1be4d..40838f57d4 100644 --- a/math/libm-test.c +++ b/math/libm-test.c @@ -1072,7 +1072,7 @@ cbrt_test (void) check_eps ("cbrt (-27) == -3", FUNC(cbrt) (-27.0), -3.0, CHOOSE (3e-16L, 5e-16, 0)); check_eps ("cbrt (0.970299) == 0.99", FUNC(cbrt) (0.970299), 0.99, - CHOOSE (2e-17L, 0, 0)); + CHOOSE (2e-17L, 2e-16, 0)); check_eps ("cbrt (0.7) == .8879040017...", FUNC(cbrt) (0.7), 0.8879040017426007084L, CHOOSE(2e-17L, 6e-16, 0)); @@ -1113,7 +1113,7 @@ cos_test (void) 0, CHOOSE (1e-19L, 1e-16L, 1e-7L)); check_eps ("cos (0.7) == 0.7648421872...", FUNC(cos) (0.7), - 0.7648421872844884262L, CHOOSE(3e-17, 2e-16, 0)); + 0.7648421872844884262L, CHOOSE(3e-17, 2e-16, 6e-8)); } static void @@ -1608,7 +1608,7 @@ log10_test (void) check_eps ("log10 (e) == M_LOG10E", FUNC(log10) (M_El), M_LOG10El, CHOOSE (1e-18, 0, 9e-8)); check_eps ("log10 (0.7) == -0.1549019599...", FUNC(log10) (0.7), - -0.15490195998574316929L, CHOOSE(3e-17L, 3e-17, 0)); + -0.15490195998574316929L, CHOOSE(3e-17L, 3e-17, 2e-8)); } @@ -1857,7 +1857,7 @@ sinh_test (void) #endif check_eps ("sinh (0.7) == 0.7585837018...", FUNC(sinh) (0.7), - 0.75858370183953350346L, CHOOSE(6e-17L, 0, 6e-8)); + 0.75858370183953350346L, CHOOSE(6e-17L, 2e-16, 6e-8)); } @@ -1914,7 +1914,7 @@ sincos_test (void) check_eps ("sincos (0.7, &sin, &cos) puts 0.6442176872... in sin", sin_res, 0.64421768723769105367L, CHOOSE(4e-17L, 0, 0)); check_eps ("sincos (0.7, &sin, &cos) puts 0.7648421872... in cos", cos_res, - 0.76484218728448842626L, CHOOSE(3e-17L, 2e-16, 0)); + 0.76484218728448842626L, CHOOSE(3e-17L, 2e-16, 6e-8)); } @@ -1946,7 +1946,7 @@ tanh_test (void) check ("tanh (-inf) == -1", FUNC(tanh) (minus_infty), -1); #endif check_eps ("tanh (0.7) == 0.6043677771...", FUNC(tanh) (0.7), - 0.60436777711716349631L, CHOOSE(3e-17L, 0, 6e-8)); + 0.60436777711716349631L, CHOOSE(3e-17L, 2e-16, 6e-8)); } @@ -3437,7 +3437,7 @@ ccosh_test (void) check_eps ("real(ccosh(0.7 + i 1.2)) == 0.45482...", __real__ result, 0.4548202223691477654L, CHOOSE(5e-17L, 6e-17, 9e-8)); check_eps ("imag(ccosh(0.7 + i 1.2)) == 0.70702...", __imag__ result, - 0.7070296600921537682L, CHOOSE(7e-17L, 0, 0)); + 0.7070296600921537682L, CHOOSE(7e-17L, 2e-16, 0)); result = FUNC(ccosh) (BUILD_COMPLEX (-2, -3)); check_eps ("real(ccosh(-2 - i 3)) == -3.72454...", __real__ result, @@ -3579,7 +3579,7 @@ cacos_test (void) check_eps ("real(cacos(0.7 + i 1.2)) == 1.13518...", __real__ result, 1.1351827477151551089L, CHOOSE(2e-17L, 3e-16, 2e-7)); check_eps ("imag(cacos(0.7 + i 1.2)) == -1.09276...", __imag__ result, - -1.0927647857577371459L, CHOOSE(4e-17L, 0, 3e-7)); + -1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 3e-7)); result = FUNC(cacos) (BUILD_COMPLEX (-2, -3)); check_eps ("real(cacos(-2 - i 3)) == 2.14144...", __real__ result, @@ -3717,7 +3717,7 @@ cacosh_test (void) result = FUNC(cacosh) (BUILD_COMPLEX (0.7, 1.2)); check_eps ("real(cacosh(0.7 + i 1.2)) == 1.09276...", __real__ result, - 1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 0)); + 1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 2e-7)); check_eps ("imag(cacosh(0.7 + i 1.2)) == 1.13518...", __imag__ result, 1.1351827477151551089L, CHOOSE(2e-17L, 0, 0)); @@ -3864,7 +3864,7 @@ casin_test (void) check_eps ("real(casin(0.7 + i 1.2)) == 0.43561...", __real__ result, 0.4356135790797415103L, CHOOSE(2e-17L, 2e-16, 2e-7)); check_eps ("imag(casin(0.7 + i 1.2)) == 1.09276...", __imag__ result, - 1.0927647857577371459L, CHOOSE(4e-17L, 0, 3e-7)); + 1.0927647857577371459L, CHOOSE(4e-17L, 3e-16, 3e-7)); result = FUNC(casin) (BUILD_COMPLEX (-2, -3)); check_eps ("real(casin(-2 - i 3)) == -0.57065...", __real__ result, @@ -4157,13 +4157,13 @@ catan_test (void) result = FUNC(catan) (BUILD_COMPLEX (0.7, 1.2)); check_eps ("real(catan(0.7 + i 1.2)) == 1.07857...", __real__ result, - 1.0785743834118921877L, CHOOSE (3e-17, 0, 0)); + 1.0785743834118921877L, CHOOSE (3e-17, 0, 5e-7)); check_eps ("imag(catan(0.7 + i 1.2)) == 0.57705...", __imag__ result, - 0.5770573776534306764L, CHOOSE(3e-17L, 0, 6e-8)); + 0.5770573776534306764L, CHOOSE(3e-17L, 2e-16, 6e-8)); result = FUNC(catan) (BUILD_COMPLEX (-2, -3)); - check ("real(catan(-2 - i 3)) == -1.40992...", __real__ result, - -1.4099210495965755225L); + check_eps ("real(catan(-2 - i 3)) == -1.40992...", __real__ result, + -1.4099210495965755225L, CHOOSE(0, 0, 4e-7)); check_eps ("imag(catan(-2 - i 3)) == -0.22907...", __imag__ result, -0.2290726829685387662L, CHOOSE(1.1e-19L, 3e-17, 2e-8)); } @@ -4309,13 +4309,13 @@ catanh_test (void) check_eps ("real(catanh(0.7 + i 1.2)) == 0.26007...", __real__ result, 0.2600749516525135959L, CHOOSE (2e-18, 6e-17, 0)); check_eps ("imag(catanh(0.7 + i 1.2)) == 0.97024...", __imag__ result, - 0.9702403077950989849L, CHOOSE (3e-17, 0, 0)); + 0.9702403077950989849L, CHOOSE (3e-17, 2e-16, 4e-7)); result = FUNC(catanh) (BUILD_COMPLEX (-2, -3)); check_eps ("real(catanh(-2 - i 3)) == -0.14694...", __real__ result, - -0.1469466662255297520L, CHOOSE (9e-20L, 6e-17, 2e-8)); + -0.1469466662255297520L, CHOOSE (9e-20L, 2e-16, 2e-8)); check_eps ("imag(catanh(-2 - i 3)) == -1.33897...", __imag__ result, - -1.3389725222944935611L, CHOOSE (7e-19L, 0, 0)); + -1.3389725222944935611L, CHOOSE (7e-19L, 0, 5e-7)); } @@ -4459,11 +4459,11 @@ ctan_test (void) check_eps ("real(ctan(0.7 + i 1.2)) == 0.17207...", __real__ result, 0.1720734197630349001L, CHOOSE(1e-17L, 3e-17, 2e-8)); check_eps ("imag(ctan(0.7 + i 1.2)) == 0.95448...", __imag__ result, - 0.9544807059989405538L, CHOOSE(2e-17L, 2e-16, 0)); + 0.9544807059989405538L, CHOOSE(2e-17L, 2e-16, 6e-8)); result = FUNC(ctan) (BUILD_COMPLEX (-2, -3)); check_eps ("real(ctan(-2 - i 3)) == -0.00376...", __real__ result, - 0.0037640256415042482L, CHOOSE(1e-19L, 0, 0)); + 0.0037640256415042482L, CHOOSE(1e-19L, 5e-19, 0)); check_eps ("imag(ctan(-2 - i 3)) == -1.00323...", __imag__ result, -1.0032386273536098014L, CHOOSE(2e-19L, 0, 2e-7)); } @@ -4610,15 +4610,15 @@ ctanh_test (void) result = FUNC(ctanh) (BUILD_COMPLEX (0.7, 1.2)); check_eps ("real(ctanh(0.7 + i 1.2)) == 1.34721...", __real__ result, - 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, - 0.4778641038326365540L, CHOOSE(9e-17L, 6e-17, 9e-8)); + 0.4778641038326365540L, CHOOSE(9e-17L, 2e-16, 9e-8)); result = FUNC(ctanh) (BUILD_COMPLEX (-2, -3)); check_eps ("real(ctanh(-2 - i 3)) == -0.96538...", __real__ result, - -0.9653858790221331242L, CHOOSE(2e-19L, 0, 0)); + -0.9653858790221331242L, CHOOSE(2e-19L, 2e-16, 2e-7)); check_eps ("imag(ctanh(-2 - i 3)) == 0.00988...", __imag__ result, - 0.0098843750383224937L, CHOOSE(7e-20L, 0, 1e-9)); + 0.0098843750383224937L, CHOOSE(7e-20L, 2e-16, 1e-9)); } @@ -4786,7 +4786,7 @@ clog_test (void) check_eps ("real(clog(-2 - i 3)) == 1.28247...", __real__ result, 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)); } diff --git a/sysdeps/libm-ieee754/e_exp.c b/sysdeps/libm-ieee754/e_exp.c index 660c5bc88d..5eae12a19c 100644 --- a/sysdeps/libm-ieee754/e_exp.c +++ b/sysdeps/libm-ieee754/e_exp.c @@ -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); - - x -= __exp_deltatable[tval]; - } - else - { - /* As above, but x is negative. */ - t = x - TWO43; - t += TWO43; - x -= 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 + x += __exp_deltatable[-tval]; /* Now, the variable x contains x + n*ln(2)_1. */ dely = n*M_LN2_1; diff --git a/sysdeps/libm-ieee754/e_expf.c b/sysdeps/libm-ieee754/e_expf.c index c4a7b644fd..ff6357bd1d 100644 --- a/sysdeps/libm-ieee754/e_expf.c +++ b/sysdeps/libm-ieee754/e_expf.c @@ -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); - - delta = - __exp_deltatable[tval]; - } - else - { - /* As above, but x is negative. */ - t = dx - TWO43; - t += TWO43; - dx -= 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 + delta = __exp_deltatable[-tval]; /* Compute ex2 = 2^n e^(t/512+delta[t]). */ ex2_u.d = __exp_atable[tval+177]; diff --git a/sysdeps/libm-ieee754/s_exp2.c b/sysdeps/libm-ieee754/s_exp2.c index ead1ce89eb..875d4d6f2c 100644 --- a/sysdeps/libm-ieee754/s_exp2.c +++ b/sysdeps/libm-ieee754/s_exp2.c @@ -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 diff --git a/sysdeps/libm-ieee754/s_exp2f.c b/sysdeps/libm-ieee754/s_exp2f.c index 641b7548f1..8229885453 100644 --- a/sysdeps/libm-ieee754/s_exp2f.c +++ b/sysdeps/libm-ieee754/s_exp2f.c @@ -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 diff --git a/sysdeps/powerpc/atomicity.h b/sysdeps/powerpc/atomicity.h index dba09658cb..5b56532779 100644 --- a/sysdeps/powerpc/atomicity.h +++ b/sysdeps/powerpc/atomicity.h @@ -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) { diff --git a/sysdeps/powerpc/elf/libc-start.c b/sysdeps/powerpc/elf/libc-start.c new file mode 100644 index 0000000000..535eab2a64 --- /dev/null +++ b/sysdeps/powerpc/elf/libc-start.c @@ -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)); +} diff --git a/sysdeps/powerpc/elf/start.S b/sysdeps/powerpc/elf/start.S new file mode 100644 index 0000000000..94cb423629 --- /dev/null +++ b/sysdeps/powerpc/elf/start.S @@ -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) diff --git a/sysdeps/unix/sysv/linux/powerpc/Dist b/sysdeps/unix/sysv/linux/powerpc/Dist index 0213c45f51..71eb76f0c0 100644 --- a/sysdeps/unix/sysv/linux/powerpc/Dist +++ b/sysdeps/unix/sysv/linux/powerpc/Dist @@ -3,4 +3,3 @@ clone.S kernel_stat.h kernel_termios.h init-first.h -syscall.h |