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authorUlrich Drepper <drepper@redhat.com>1997-08-24 10:55:18 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-24 10:55:18 +0000
commitf41c80910d631bacdaf39ec6d11272db79c59d38 (patch)
tree26b93c7b36e05eb08892aa730788c8f772efe2e3 /sysdeps/sparc/sparc32/divrem.m4
parent40a55d2054ef9d9085c4e6b0157c5d30608736fc (diff)
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Update.
1997-08-24 12:24 Ulrich Drepper <drepper@cygnus.com> * configure.in (INSTALL): Quote `$'. * libc.map: Add __xpg_basename. * csu/Makefile (initfini.s): Disable optimization. * elf/dl-deps.c: Implement handling of DL_FILTER. * elf/dl-load.c (_dl_init_paths): Add error check. * intl/finddomain.c (_nl_find_domain): Correct comment. * intl/localealias.c: Include <bits/libc-lock.h> not <libc-lock.h>. * libio/stdio.h: Make {,v}snprintf available if __USE_BSD. Change extern inline functions to work correctly in C++. * locale/iso-4217.def: Update for more recent ISO 4217 version. * locale/loadlocale.c (_nl_load_locale): Add cast. * manual/message.texi: Finish gettext section. * posix/getopt_init.c: Don't use relative #include path. (__getopt_clean_environment): Change function to take pointer to environment as argument. Optimize generation of test string a bit. * sysdeps/unix/sysv/linux/init-first.c: Call __getopt_clean_environment with additional argument. * poisx/glob.c: Add prototype for next_brace_sub. * sysdeps/generic/dl-sysdep.c: Recognize AT_BASE value on auxiliary vector. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Rewrite to not generate relocation entry. Suggested by Richard Henderson. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (elf_machine_runtime_setup): Add .aligns. * sysdeps/i386/fpu/fraiseexcpt.c: Add volatile to asms. * sysdeps/i386/fpu/bits/mathinline.h: Partially undo change of 1997-08-14 03:14. gcc 2.7.2* is really broken in some aspects. * sysdeps/standalone/i386/i386.h: Clean up asm statements a bit. * sysdeps/standalone/i960/i960ca.h: Likewise. 1997-08-22 19:04 Richard Henderson <rth@cygnus.com> * elf/rtld.c (_dl_start): Init _dl_rtld_map.l_opencount due to undocumented test addition in _dl_map_object. Support ET_EXEC versions of ld.so, for debugging at least: * elf/dl-load.c (_dl_map_object): Add_name_to_object could get called despite the DT_SONAME != NULL test, segfaulting. Simplify the code here as well. * elf/dl-lookup.c (do_lookup): Skip objects with no symtab. (_dl_setup_hash): Likewise for hash tables. * elf/dl-version.c (_dl_check_map_versions): Likewise for strtabs. * elf/rtld.c (_dl_start): Likewise for rpath. (_dl_rtld_libname2): New variable. (dl_main): Use it to add an soname for ourselves when we don't have one of our own. Base it on the target's .interp. (dl_main): Again, skip printing of objects that don't have strtabs. Sparc 32 merge: * elf/dl-runtime.c (ELF_FIXUP_RETURN_VALUE): Provide default value. (fixup): Simplify code. Use ELF_FIXUP_RETURN_VALUE. (profile_fixup): Likewise, though this still needs fixing for Sparc32 and PPC. * sysdeps/powerpc/dl-machine.h: Transmute ELF_FIXUP_RETURNS_ADDRESS to ELF_FIXUP_RETURN_VALUE. * sysdeps/sparc/sparc32/dl-machine.h: Implement lazy relocation. Fix up _dl_start_user to handle _dl_skip_args properly. Use _dl_hwcap to determine if "flush" is available/needed. * sysdeps/sparc/configure.in: Remove. It doesn't actually do anything anymore, and what it did do is done somewhere else. * sysdeps/sparc/configure: Likewise. * sysdeps/sparc/fpu/bits/mathdef.h (FP_ILOGB0, FP_ILOGBNAN): New. * sysdeps/sparc/fpu/fraiseexcpt.c: Rearrange for smaller code. * sysdeps/sparc/sparc32/Makefile: Fix sparc->sparc/sparc32 bits in divrem expansions. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (END, LOC): New definitions for assembly syntax differences. * sysdeps/sparc/sparc32/__longjmp.S: %g6,%g7 are reserved to the "system". Use %g2,%g3 instead. Use new local label macro. * sysdeps/sparc/sparc32/add_n.S: Use <sysdep.h> and ENTRY, END, and LOC for proper assembly headers/footers. * sysdeps/sparc/sparc32/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/alloca.S: Likewise. * sysdeps/sparc/sparc32/dotmul.S: Likewise. * sysdeps/sparc/sparc32/lshift.S: Likewise. * sysdeps/sparc/sparc32/mul_1.S: Likewise. * sysdeps/sparc/sparc32/rshift.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/mul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/submul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/sub_n.S: Likewise. * sysdeps/sparc/sparc32/submul_1.S: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/umul.S: Likewise. * sysdeps/sparc/sparc32/divrem.m4: Likewise. * sysdeps/sparc/sparc32/rem.S: Regenerate. * sysdeps/sparc/sparc32/sdiv.S: Regenerate. * sysdeps/sparc/sparc32/udiv.S: Regenerate. * sysdeps/sparc/sparc32/urem.S: Regenerate. * sysdeps/sparc/sparc32/sparcv8/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: New file. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/umul.S: New file. * sysdeps/sparc/sparc32/sparcv8/urem.S: New file. * sysdeps/sparc/sparc32/bsd-_setjmp.S: Dike out. * sysdeps/sparc/sparc32/bsd-setjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Add _setjmp and setjmp entry points. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Clean up PIC code. * sysdeps/sparc/sparc32/elf/start.S: New file, slightly modified from the sparc64 version. * sysdeps/sparc/sparc32/elf/start.c: Removed. * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Rewrite in assembly based on the sparc64 version. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Duh. Use proper syntax for manipulating %fsr. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Make IEEE conformance be the default. * elf/elf.h (HWCAP_SPARC_*): New definitions. * elf/rtld.c (_dl_hwcap): New variable. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Record AT_HWCAP. * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c: New file. Attempt to get hold of the page size based on what we might have been told at startup time in _dl_pagesize. This will be obsolete when I finish the kernel hooks for a proper sysconf(), stay tuned. Sparc 64 merge: * sysdeps/sparc/sparc64/dl-machine.h (ELF_FIXUP_RETURN_VALUE): New. Figure out the right thing to return based on the .plt format. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Update comment. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h (__dev_t): Should have been 64-bits wide. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: sll->sllx, optimize for branch delay slot usage. 1997-08-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * csu/Makefile ($(objpfx)crt%.o): Fix a missing *.so -> *.os change. 1997-08-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (identities): Change epsilon. * sysdeps/i386/fpu/bits/mathinline.h: Correct arguments to fabs, fabsf, fabsl, __fabsl. * sysdeps/libm-i387/e_remainderl.S: Pop extra value from FPU stack. * sysdeps/libm-ieee754/s_csinhl.c: Include <fenv.h>.
Diffstat (limited to 'sysdeps/sparc/sparc32/divrem.m4')
-rw-r--r--sysdeps/sparc/sparc32/divrem.m462
1 files changed, 28 insertions, 34 deletions
diff --git a/sysdeps/sparc/sparc32/divrem.m4 b/sysdeps/sparc/sparc32/divrem.m4
index 665abf11ae..30d532ad77 100644
--- a/sysdeps/sparc/sparc32/divrem.m4
+++ b/sysdeps/sparc/sparc32/divrem.m4
@@ -47,8 +47,8 @@ define(V, `%o5')dnl
dnl
dnl m4 reminder: ifelse(a,b,c,d) => if a is b, then c, else d
define(T, `%g1')dnl
-define(SC, `%g7')dnl
-ifelse(S, `true', `define(SIGN, `%g6')')dnl
+define(SC, `%g2')dnl
+ifelse(S, `true', `define(SIGN, `%g3')')dnl
dnl
dnl This is the recursive definition for developing quotient digits.
@@ -65,7 +65,7 @@ dnl modified to reflect the output R.
dnl
define(DEVELOP_QUOTIENT_BITS,
` ! depth $1, accumulated bits $2
- bl L.$1.eval(2**N+$2)
+ bl LOC($1.eval(2**N+$2))
srl V,1,V
! remainder is positive
subcc R,V,R
@@ -73,7 +73,7 @@ define(DEVELOP_QUOTIENT_BITS,
` b 9f
add Q, ($2*2+1), Q
', ` DEVELOP_QUOTIENT_BITS(incr($1), `eval(2*$2+1)')')
-L.$1.eval(2**N+$2):
+LOC($1.eval(2**N+$2)):
! remainder is negative
addcc R,V,R
ifelse($1, N,
@@ -82,18 +82,10 @@ L.$1.eval(2**N+$2):
', ` DEVELOP_QUOTIENT_BITS(incr($1), `eval(2*$2-1)')')
ifelse($1, 1, `9:')')dnl
-#include "sysdep.h"
-#ifdef __linux__
-#include <asm/traps.h>
-#else
-#ifdef __svr4__
+#include <sysdep.h>
#include <sys/trap.h>
-#else
-#include <machine/trap.h>
-#endif
-#endif
-FUNC(NAME)
+ENTRY(NAME)
ifelse(S, `true',
` ! compute sign of result; if neither is negative, no problem
orcc divisor, dividend, %g0 ! either negative?
@@ -124,11 +116,11 @@ ifelse(OP, `div',
1:
cmp R, V ! if divisor exceeds dividend, done
- blu Lgot_result ! (and algorithm fails otherwise)
+ blu LOC(got_result) ! (and algorithm fails otherwise)
clr Q
sethi %hi(1 << (WORDSIZE - TOPBITS - 1)), T
cmp R, T
- blu Lnot_really_big
+ blu LOC(not_really_big)
clr ITER
! `Here the dividend is >= 2**(31-N) or so. We must be careful here,
@@ -146,7 +138,7 @@ ifelse(OP, `div',
! Now compute SC.
2: addcc V, V, V
- bcc Lnot_too_big
+ bcc LOC(not_too_big)
add SC, 1, SC
! We get here if the divisor overflowed while shifting.
@@ -155,14 +147,14 @@ ifelse(OP, `div',
sll T, TOPBITS, T ! high order bit
srl V, 1, V ! rest of V
add V, T, V
- b Ldo_single_div
+ b LOC(do_single_div)
sub SC, 1, SC
- Lnot_too_big:
+ LOC(not_too_big):
3: cmp V, R
blu 2b
nop
- be Ldo_single_div
+ be LOC(do_single_div)
nop
/* NB: these are commented out in the V8-Sparc manual as well */
/* (I do not understand this) */
@@ -177,15 +169,15 @@ ifelse(OP, `div',
! order bit set in the first step, just falling into the regular
! division loop will mess up the first time around.
! So we unroll slightly...
- Ldo_single_div:
+ LOC(do_single_div):
subcc SC, 1, SC
- bl Lend_regular_divide
+ bl LOC(end_regular_divide)
nop
sub R, V, R
mov 1, Q
- b Lend_single_divloop
+ b LOC(end_single_divloop)
nop
- Lsingle_divloop:
+ LOC(single_divloop):
sll Q, 1, Q
bl 1f
srl V, 1, V
@@ -197,37 +189,37 @@ ifelse(OP, `div',
add R, V, R
sub Q, 1, Q
2:
- Lend_single_divloop:
+ LOC(end_single_divloop):
subcc SC, 1, SC
- bge Lsingle_divloop
+ bge LOC(single_divloop)
tst R
- b,a Lend_regular_divide
+ b,a LOC(end_regular_divide)
-Lnot_really_big:
+LOC(not_really_big):
1:
sll V, N, V
cmp V, R
bleu 1b
addcc ITER, 1, ITER
- be Lgot_result
+ be LOC(got_result)
sub ITER, 1, ITER
tst R ! set up for initial iteration
-Ldivloop:
+LOC(divloop):
sll Q, N, Q
DEVELOP_QUOTIENT_BITS(1, 0)
-Lend_regular_divide:
+LOC(end_regular_divide):
subcc ITER, 1, ITER
- bge Ldivloop
+ bge LOC(divloop)
tst R
- bl,a Lgot_result
+ bl,a LOC(got_result)
! non-restoring fixup here (one instruction only!)
ifelse(OP, `div',
` sub Q, 1, Q
', ` add R, divisor, R
')
-Lgot_result:
+LOC(got_result):
ifelse(S, `true',
` ! check to see if answer should be < 0
tst SIGN
@@ -236,3 +228,5 @@ ifelse(S, `true',
1:')
retl
ifelse(OP, `div', `mov Q, %o0', `mov R, %o0')
+
+END(NAME)