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author | Ulrich Drepper <drepper@redhat.com> | 1997-09-11 12:09:10 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-09-11 12:09:10 +0000 |
commit | 9a0a462ceb4ab96c909b182f3052de2ef13fbe3a (patch) | |
tree | 59456497b6acefe69aab04fc28c38ea38852ccc7 /sysdeps/powerpc/dl-machine.h | |
parent | 26b4d7667169f8db26fd8194b3c498ec58e50f90 (diff) | |
download | glibc-9a0a462ceb4ab96c909b182f3052de2ef13fbe3a.tar.gz glibc-9a0a462ceb4ab96c909b182f3052de2ef13fbe3a.tar.xz glibc-9a0a462ceb4ab96c909b182f3052de2ef13fbe3a.zip |
Update.
1997-09-11 04:36 Ulrich Drepper <drepper@cygnus.com> * db2/db_int.h: Define __set_errno if not yet available. * db2/btree/bt_rec.c: Use __set_errno to set errno value. * db2/clib/getlong.c: Likewise. * db2/db185/db185.c: Likewise. * db2/db185/db185_int.h: Likewise. * db2/dbm/dbm.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log_archive.c: Likewise. * elf/dl-profile.c: Implement mcount function. * gmon/gmon.c: Use __profil not profil because of namespace pollution. * gmon/mcount.c: Remove BSD kernel code. Use compare&swap instruction if possible to change state variable. Optimize frompc folding. * gmon/sys/gmon.h (struct gmonparam): Change state field to long int. * sysdeps/i386/i486/atomicity.h: New file. * sysdeps/stub/atomicity.h: New file. * sysdeps/mach/hurd/profil.c: Define function as __profil and make profil weak alias. * sysdeps/posix/profil.c: Likewise. * string/bits/string2.h: New file. * include/bits/string2.h: New file. * string/Makefile (routines): Add mempcpy. (tests): Add inl-tester. Remove _D__NO_STRING_INLINES from CFLAGS-* variables. * sysdeps/generic/mempcpy.c: New file. * sysdeps/generic/memccpy.c: Undef function name to enable definition as macro. * sysdeps/generic/memchr.c: Likewise. * sysdeps/generic/memcmp.c: Likewise. * sysdeps/generic/memmem.c: Likewise. * sysdeps/generic/memmove.c: Likewise. * sysdeps/generic/strcat.c: Likewise. * sysdeps/generic/strchr.c: Likewise. * sysdeps/generic/strcmp.c: Likewise. * sysdeps/generic/strcpy.c: Likewise. * sysdeps/generic/strcspn.c: Likewise. * sysdeps/generic/strlen.c: Likewise. * sysdeps/generic/strncat.c: Likewise. * sysdeps/generic/strncmp.c: Likewise. * sysdeps/generic/strncpy.c: Likewise. * sysdeps/generic/strpbrk.c: Likewise. * sysdeps/generic/strrchr.c: Likewise. * sysdeps/generic/strsep.c: Likewise. * sysdeps/generic/strspn.c: Likewise. * sysdeps/generic/strstr.c: Likewise. * sysdeps/generic/strtok.c: Likewise. * sysdeps/generic/strtok_r.c: Likewise. * sysdeps/i386/memset.c: Likewise. * sysdeps/i386/bits/string.h: Correct a few types and constraints. * sysdeps/i386/i486/bits/string.h: Heavy rewrites and optimizations. * string/stratcliff.c: Undefine __USE_STRING_INLINES. * string/tst-strlen.c: Likewise. * string/string.h: Add prototype for mempcpy. Include bits/string2.h header always if optimizing. * intl/dcgettext.c: Don't unconditionally define stpcpy, only if not yet defined. * intl/l10nflist.c: Likewise. * string/tester.c: Add copyright and make little cleanups. * inet/test_ifindex.c: Change type of ni variable to unsigned int. * locale/programs/ld-ctype.c (struct locale_ctype_t): Change type of fields map_collection_max and map_collection_act to size_t. * nss/libnss_files.map: Group entries. * posix/unistd.h: Add prototype for __setpgid and __profil. * sysdeps/generic/crypt.h: Declare __crypt_r. * sysdeps/i386/bits/select.h: Fix fatal bugs, use correct casts now. * sysdeps/i386/fpu/bits/mathinline.h (isgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered): Optimize a bit. * sysdeps/stub/ftruncate.c: Include missing header for prototype. * sysdeps/stub/getdents.c: Likewise. * sysdeps/stub/reboot.c: Likewise. * sysdeps/stub/swapon.c: Likewise. * sysdeps/stub/syscall.c: Likewise. * sysdeps/stub/ualarm.c: Likewise. * sysdeps/stub/usleep.c: Likewise. * sysdeps/unix/sysv/linux/if_index.c: Don't compile or use opensock if SIOGIFINDEX and SIOGIFNAME are not defined. * sysdeps/unix/sysv/linux/net/if.h: Add IFF_PORTSEL and IFF_AUTOMEDIA according to recent kernel changes. 1997-09-10 21:32 Klaus Espenlaub <kespenla@student.informatik.uni-ulm.de> * Makeconfig: Use $(have-initfini) instead of $(elf) to figure out the installed name of the startup code. (common-generated): Add version.mk. * Makefile (distclean-1): Add glibcbug. * Makerules: Replace -lgcc by $(gnulib). * catgets/Makefile (generated): Add xmalloc.o. * csu/Makefile (generated): Replace align.h and end.h by defs.h to match the generated file. * manual/Makefile (mostlyclean): Add stub-manual and stamp.o. (realclean): Changed to remove chapters-incl[12]. * po/Makefile (realclean): New rule to remove the generated .mo files. * time/Makefile: Only include zonefile dependencies if $(no_deps) is not true to avoid make clean failure when directory time doesn't exist yet. (generated): Add tzselect. * stdio/fgets.c (fgets): Add casts to reduce gcc warning noise. * stdio/internals.c (flushbuf): Likewise. * stdio/linewrap.c (lwupdate): Likewise. * stdio/memstream.c (enlarge_buffer): Likewise. * stdio-common/vfscanf.c (_IO_vfscanf): Likewise. * time/tzset.c (compute_change): Likewise. * misc/init-misc.c (__init_misc): Only declare static if HAVE_GNU_LD is defined. * sysdeps/posix/pipestream.c (FUNC): Change to generate ANSI C style functions. * sysdeps/stub/init-posix.c: Likewise. * sysdeps/stub/profil.c: Likewise. * munch-tmpl.c (__libc_init): Convert to ANSI C style declaration to reduce gcc warning noise. * stdio/glue.c (_filbuf, _flsbuf): Likewise. * stdio/obstream.c (grow, seek, input, init_obstream): Likewise. * stdio/vasprintf.c (enlarge_buffer): Likewise. * sysdeps/generic/sysd-stdio.c (__stdio_read, __stdio_write, __stdio_seek, __stdio_close, __stdio_fileno, __stdio_open, __stdio_reopen): Likewise. * sysdeps/posix/defs.c (_cleanup): Likewise. * time/offtime.c (__offtime): Add cast. * posix/getopt.c: Don't use text_set_element if not defined. * configure.in: Provide a check for underscores before user labels that works even when the compiler used for building doesn't work (like when there is no C library). Use the old way if the compiler works. 1997-09-10 05:08 David S. Miller <davem@caip.rutgers.edu> * sysdeps/unix/sysv/linux/sparc/bits/ioctls.h: The TC* ioctls use 'T' not 't' on SparcLinux. * sysdeps/unix/sysv/linux/sparc/bits/termios.h: tcflag_t is 32 bits. * sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add aliases for _longjmp and siglongjmp. 1997-09-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * libio/stdio.h: Add format attributes to the extra printf and scanf like functions. * stdio/stdio.h: Likewise. 1997-09-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r): Print tablename_val, not tablename_len. * nis/nss_nisplus/nisplus-ethers.c (_nss_nisplus_getntohost_r): Use sprintf instead of sprintf, the string always fits. * nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_gethostbyaddr_r): Likewise. * nis/nss_nisplus/nisplus-network.c (_nss_nisplus_getnetbyaddr_r): Likewise. * nis/nss_nisplus/nisplus-proto.c (_nss_nisplus_getprotobynumber_r): Likewise. * nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_getrpcbynumber_r): Likewise. * nis/nss_nisplus/nisplus-service.c (_nss_nisplus_getservbynumber_r): Likewise. * nis/nss_nisplus/nisplus-alias.c (_nss_create_tablename): Use __stpcpy, __stpncpy and __strdup instead of public names. * nis/nss_nisplus/nisplus-ethers.c (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-grp.c (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-hosts.c (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-netgrp.c (_nss_nisplus_parse_netgroup): Likewise. * nis/nss_nisplus/nisplus-network.c (_nss_nisplus_parse_netent): Likewise. (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-proto.c (_nss_nisplus_parse_protoent): Likewise. (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-pwd.c (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_parse_rpcent): Likewise. (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-service.c (_nss_nisplus_parse_servent): Likewise. (_nss_create_tablename): Likewise. * nis/nss_nisplus/nisplus-spwd.c (_nss_create_tablename): Likewise. * libc.map: Export __stpcpy and __strdup. 1997-09-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c, CFLAGS-test-ldouble.c): Pass -ffloat-store to avoid excessive precision. 1997-09-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * include/rpc/auth_des.h: New file. 1997-09-09 Paul Eggert <eggert@twinsun.com> * time/mktime.c (__mktime_internal): Declare sec_requested even if !LEAP_SECONDS_POSSIBLE, since it's needed at the end when checking for time_t overflow. 1997-09-09 22:11 Ulrich Drepper <drepper@cygnus.com> * sysdeps/posix/getcwd.c: Correct test for too small buffer. Reported by Erik Troan <ewt@redhat.com>. * elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>. * elf/dl-open.c: Likewise. 1997-09-07 17:09 Richard Henderson <rth@cygnus.com> * sysdeps/alpha/Makefile: Kill setjmp_aux. * sysdeps/alpha/bits/setjmp.h: Rewrite in terms of an array. * sysdeps/alpha/__longjmp.c: Remove. * sysdeps/alpha/setjmp_aux.c: Remove. * sysdeps/alpha/__longjmp.S: New file. * sysdeps/alpha/bsd-_setjmp.S: Stub out. * sysdeps/alpha/bsd-setjmp.S: Likewise. * sysdeps/alpha/setjmp.S: Do the work; don't call __setjmp_aux. Move _setjmp and setjmp from bsd-*.S. 1997-09-06 20:20 Ulrich Drepper <drepper@cygnus.com> * include/rpc/auth.h: New file. * include/rpc/auth_unix.h: New file. 1997-09-06 Paul Eggert <eggert@twinsun.com> Fix gmtime so that it reports leap seconds when TZ indicates that leap seconds are desired. * time/gmtime.c (<stddef.h>): Remove unnecessary include. (gmtime): Put after gmtime_r, to help the compiler inline. (__tz_convert): New decl. (gmtime_r): Use __tz_convert instead of __offtime, so that leap seconds are handled correctly. * time/localtime.c (<errno.h>, <libc-lock.h>): Remove includes that are now unnecessary. (__tzset_internal, __tz_compute, __tzfile_compute, __use_tzfile, __tzset_lock): Remove extern decls that are now unnecessary. (localtime_internal): Moved to __tz_convert in tzset.c. so that localtime and gmtime can both use it easily. (localtime): Put after localtime_r, to help the compiler inline. (localtime_r): Use __tz_convert instead of localtime_internal. * time/strftime.c (__tz_compute): Remove unused (and now incorrect) decl. * time/tzfile.c (__tzfile_compute): New arg USE_LOCALTIME. * time/tzset.c (<errno.h>): Include. (_tmbuf): New decl. (__tzfile_compute): New function. (tz_compute): Renamed from __tz_compute. No longer extern. Remove redundant call to tzset_internal. (tzset_internal): Renamed from __tzset_internal. No longer extern. (tzset_lock): Renamed from __tzset_lock. No longer extern. (__tz_convert): New function, containing functionality of old localtime_internal function, plus locking and optional UTC. 1997-09-06 Paul Eggert <eggert@twinsun.com> * time/tzfile.c (__tzfile_read): Don't read a file if TZ is the empty string, just use UTC without leap seconds. This is for compatibility with the Olson code. 1997-09-06 Paul Eggert <eggert@twinsun.com> * time/tzset.c (__tzname_max): Lock tz data structures before invoking tzset_internal. * time/tzfile.c: Define compute_tzname_max statically. 1997-09-07 10:57 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/nis_call.c: Remove not longer necessary HAVE_SECURE_RPC ifdefs. * nis/nis_intern.h: Likewise. * nis/nss_nis/nis-publickey.c: Likewise. * nis/nss_nisplus/nisplus-publickey.c: Likewise. * nis/ypclnt.c: Likewise. * sunrpc/auth_des.c: Don't dereference NULL pointer, initialize ad->ad_timediff. * sunrpc/auth_none.c: Don't define our own prototypes, use the one from the header files. * sunrpc/auth_unix.c: Likewise. * sunrpc/clnt_raw.c: Likewise. * sunrpc/clnt_tcp.c: Likewise. * sunrpc/rpc_cmsg.c: Likewise. * sunrpc/key_call.c: Fix signal handling. * sunrpc/openchild.c: Don't use /bin/sh to start /usr/etc/keyenvoy, or we will get a deadlock with NIS+. * sunrpc/rpc/auth.h: Add prototype for xdr_opaque_auth, don't define HAVE_SECURE_RPC. 1997-09-07 15:51 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/bits/select.h [__GNUC__] (__FD_ZERO, __FD_SET, __FD_CLR, __FD_ISSET): Use correct casts to address array correctly. Reported by urbanw@cs.umu.se. 1997-09-07 05:07 Ulrich Drepper <drepper@cygnus.com> * elf/dl-close.c: Include <bits/libc-lock.h>, not <libc-lock.h>. * elf/dl-open.c: Likewise. * sysdeps/i386/memset.c: Undefine memset in case the header with the optimized functions is included. Patches by NIIBE Yutaka <gniibe@mri.co.jp>. * sysdeps/i386/bits/string.h [__PIC__] (strcspn, strspn, strpbrk, strsep): Use register for second parameter. * sysdeps/i386/i486/bits/string.h: Likewise. Reported by NIIBE Yutaka <gniibe@mri.co.jp>. 1997-09-03 09:48 Geoff Keating <geoffk@ozemail.com.au> * math/libm-test.c: Change various tolerances to match what the tested routines can actually provide. * math/Makefile: Add new tests. * math/atest-sincos.c: New file. * math/atest-exp.c: New file. * csu/Makefile: Give initfini.s and initfiniS.s their own CFLAGS-* macros so they can be overridden. * sysdeps/powerpc/Makefile [subdir=csu]: Override flags for initfiniS.s to use -fpic instead of -fPIC, because the sed script breaks otherwise. * sysdeps/powerpc/Makefile [build-shared]: Use -fpic not -fPIC for efficiency. * sysdeps/powerpc/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE): Don't use register 0, to let _mcount be in a shared object. * sysdeps/powerpc/dl-machine.h: Use full sentences in comments. Generally clean up. Suppress some code we don't need when relocating ld.so. * sysdeps/powerpc/test-arith.c: Change loop indices to size_t when appropriate to suppress gcc warning. * resolv/res_send.c: Suppress warning. * sunrpc/xdr_sizeof.c: Suppress warning. * FAQ: Add ppc-linux. * manual/maint.texi: Add ppc-linux. Explain that gcc can't build it yet. * sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Correct for current kernels. 1997-08-15 07:45 Geoff Keating <geoffk@ozemail.com.au> * stdlib/fmtmsg.c: Use two parameters for __libc_once_define. * sysdeps/i386/machine-gmon.h: Correct typo. * sysdeps/unix/sysv/linux/powerpc/bits/mman.h: Change to match kernel. * sysdeps/generic/dl-sysdep.c: Add hook for bizzare PPC argument hack. * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Rewrite to use sysdeps/linux/dl-sysdep.c. * sysdeps/powerpc/Makefile [subdir=gmon]: Compile ppc-mcount. * sysdeps/powerpc/machine-gmon.h: Use ppc-mcount. * sysdeps/powerpc/ppc-mcount: New file. The following are mostly changes to allow profiling: * sysdeps/powerpc/add_n.S: Added. * sysdeps/powerpc/add_n.s: Removed. * sysdeps/powerpc/addmul_1.S: Added. * sysdeps/powerpc/addmul_1.s: Removed. * sysdeps/powerpc/bsd-_setjmp.S: Use JUMPTARGET macro. * sysdeps/powerpc/bsd-setjmp.S: Use JUMPTARGET macro. * sysdeps/powerpc/lshift.S: Added. * sysdeps/powerpc/lshift.s: Removed. * sysdeps/powerpc/memset.S: Added. * sysdeps/powerpc/memset.s: Removed. * sysdeps/powerpc/mul_1.S: Added. * sysdeps/powerpc/mul_1.s: Removed. * sysdeps/powerpc/rshift.S: Added. * sysdeps/powerpc/rshift.s: Removed. * sysdeps/powerpc/s_copysign.S: Use ENTRY, END, weak_alias macros. * sysdeps/powerpc/s_fabs.S: Use ENTRY, END, weak_alias macros. * sysdeps/powerpc/setjmp.S: Use JUMPTARGET macro. * sysdeps/powerpc/strchr.S: Added. * sysdeps/powerpc/strchr.s: Removed. * sysdeps/powerpc/strcmp.S: Added. * sysdeps/powerpc/strcmp.s: Removed. * sysdeps/powerpc/strlen.S: Added. * sysdeps/powerpc/strlen.s: Removed. * sysdeps/powerpc/sub_n.S: Added. * sysdeps/powerpc/sub_n.s: Removed. * sysdeps/powerpc/submul_1.S: Added. * sysdeps/powerpc/submul_1.s: Removed. * sysdeps/unix/sysv/linux/powerpc/_exit.S: Removed. * sysdeps/unix/sysv/linux/powerpc/brk.S: Added. * sysdeps/unix/sysv/linux/powerpc/brk.c: Removed. * sysdeps/unix/sysv/linux/powerpc/clone.S: Use new macros. Fix various bugs. Document that it isn't tested. * sysdeps/unix/sysv/linux/powerpc/sigreturn.S: Make look like sysdeps/unix/_exit.S. * sysdeps/unix/sysv/linux/powerpc/socket.S: Use new macros. * sysdeps/unix/sysv/linux/powerpc/syscall.S: Use new macros. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Define some new macros to make assembler (possibly) more portable, allow profiling, etc.
Diffstat (limited to 'sysdeps/powerpc/dl-machine.h')
-rw-r--r-- | sysdeps/powerpc/dl-machine.h | 152 |
1 files changed, 79 insertions, 73 deletions
diff --git a/sysdeps/powerpc/dl-machine.h b/sysdeps/powerpc/dl-machine.h index 917e4f7970..771b711a14 100644 --- a/sysdeps/powerpc/dl-machine.h +++ b/sysdeps/powerpc/dl-machine.h @@ -149,33 +149,34 @@ elf_machine_load_address (void) #define elf_machine_relplt elf_machine_rela /* This code is used in dl-runtime.c to call the `fixup' function - and then redirect to the address it returns. It is called - from code built in the PLT by elf_machine_runtime_setup. */ + and then redirect to the address it returns. It is called + from code built in the PLT by elf_machine_runtime_setup. */ #define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\ .section \".text\" .align 2 .globl _dl_runtime_resolve .type _dl_runtime_resolve,@function _dl_runtime_resolve: - # We need to save the registers used to pass parameters. - # We build a stack frame to put them in. + # We need to save the registers used to pass parameters, and register 0, + # which is used by _mcount; the registers are saved in a stack frame. stwu 1,-48(1) - mflr 0 + stw 0,12(1) stw 3,16(1) stw 4,20(1) - stw 0,52(1) + # The code that calls this has put parameters for `fixup' in r12 and r11. + mr 3,12 stw 5,24(1) - # We also need to save some of the condition register fields. - mfcr 0 + mr 4,11 stw 6,28(1) + mflr 0 + # We also need to save some of the condition register fields. stw 7,32(1) + stw 0,52(1) stw 8,36(1) + mfcr 0 stw 9,40(1) stw 10,44(1) - stw 0,12(1) - # The code that calls this has put parameters for `fixup' in r12 and r11. - mr 3,12 - mr 4,11 + stw 0,8(1) bl fixup@local # 'fixup' returns the address we want to branch to. mtctr 3 @@ -184,20 +185,21 @@ _dl_runtime_resolve: lwz 10,44(1) lwz 9,40(1) mtlr 0 - lwz 0,12(1) lwz 8,36(1) + lwz 0,8(1) lwz 7,32(1) lwz 6,28(1) mtcrf 0xFF,0 lwz 5,24(1) lwz 4,20(1) lwz 3,16(1) + lwz 0,12(1) # ...unwind the stack frame, and jump to the PLT entry we updated. addi 1,1,48 bctr 0: .size _dl_runtime_resolve,0b-_dl_runtime_resolve - # undo '.section text'. + # Undo '.section text'. .previous "); @@ -213,20 +215,20 @@ asm ("\ .type _start,@function _start: # We start with the following on the stack, from top: - # argc (4 bytes) - # arguments for program (terminated by NULL) - # environment variables (terminated by NULL) - # arguments for the program loader + # argc (4 bytes); + # arguments for program (terminated by NULL); + # environment variables (terminated by NULL); + # arguments for the program loader. # FIXME: perhaps this should do the same trick as elf/start.c? # Call _dl_start with one parameter pointing at argc - mr 3,1 + mr 3,1 # (we have to frob the stack pointer a bit to allow room for # _dl_start to save the link register) - li 4,0 + li 4,0 addi 1,1,-16 - stw 4,0(1) - bl _dl_start@local + stw 4,0(1) + bl _dl_start@local # Now, we do our main work of calling initialisation procedures. # The ELF ABI doesn't say anything about parameters for these, @@ -234,70 +236,72 @@ _start: # Changing these is strongly discouraged (not least because argc is # passed by value!). - # put our GOT pointer in r31 - bl _GLOBAL_OFFSET_TABLE_-4@local + # Put our GOT pointer in r31, + bl _GLOBAL_OFFSET_TABLE_-4@local mflr 31 - # the address of _start in r30 - mr 30,3 - # &_dl_argc in 29, &_dl_argv in 27, and _dl_default_scope in 28 - lwz 28,_dl_default_scope@got(31) - lwz 29,_dl_argc@got(31) - lwz 27,_dl_argv@got(31) + # the address of _start in r30, + mr 30,3 + # &_dl_argc in 29, &_dl_argv in 27, and _dl_default_scope in 28. + lwz 28,_dl_default_scope@got(31) + lwz 29,_dl_argc@got(31) + lwz 27,_dl_argv@got(31) 0: - # call initfunc = _dl_init_next(_dl_default_scope[2]) - lwz 3,8(28) - bl _dl_init_next@plt - # if initfunc is NULL, we exit the loop - mr. 0,3 - beq 1f + # Set initfunc = _dl_init_next(_dl_default_scope[2]) + lwz 3,8(28) + bl _dl_init_next@plt + # If initfunc is NULL, we exit the loop; otherwise, + cmpwi 3,0 + beq 1f # call initfunc(_dl_argc, _dl_argv, _dl_argv+_dl_argc+1) - mtlr 0 - lwz 3,0(29) - lwz 4,0(27) + mtlr 3 + lwz 3,0(29) + lwz 4,0(27) slwi 5,3,2 - add 5,4,5 + add 5,4,5 addi 5,5,4 blrl # and loop. - b 0b + b 0b 1: # Now, to conform to the ELF ABI, we have to: - # pass argv (actually _dl_argv) in r4 - lwz 4,0(27) - # pass argc (actually _dl_argc) in r3 - lwz 3,0(29) - # pass envp (actually _dl_argv+_dl_argc+1) in r5 + # Pass argc (actually _dl_argc) in r3; + lwz 3,0(29) + # pass argv (actually _dl_argv) in r4; + lwz 4,0(27) + # pass envp (actually _dl_argv+_dl_argc+1) in r5; slwi 5,3,2 - add 5,4,5 - addi 5,5,4 - # pass the auxilary vector in r6. This is passed just after _envp. - addi 6,5,-4 + add 6,4,5 + addi 5,6,4 + # pass the auxilary vector in r6. This is passed to us just after _envp. 2: lwzu 0,4(6) - cmpwi 1,0,0 - bne 2b + cmpwi 0,0,0 + bne 2b addi 6,6,4 - # pass a termination function pointer (in this case _dl_fini) in r7 - lwz 7,_dl_fini@got(31) - # now, call the start function in r30... + # Pass a termination function pointer (in this case _dl_fini) in r7. + lwz 7,_dl_fini@got(31) + # Now, call the start function in r30... mtctr 30 - # pass the stack pointer in r1 (so far so good), pointing to a NULL value - # (this lets our startup code distinguish between a program linked statically, + lwz 26,_dl_starting_up@got(31) + # Pass the stack pointer in r1 (so far so good), pointing to a NULL value. + # (This lets our startup code distinguish between a program linked statically, # which linux will call with argc on top of the stack which will hopefully # never be zero, and a dynamically linked program which will always have # a NULL on the top of the stack). # Take the opportunity to clear LR, so anyone who accidentally returns - # from _start gets SEGV. - li 0,0 - stw 0,0(1) - mtlr 0 - # and also clear _dl_starting_up - lwz 26,_dl_starting_up@got(31) - stw 0,0(26) - # go do it! + # from _start gets SEGV. Also clear the next few words of the stack. + li 31,0 + stw 31,0(1) + mtlr 31 + stw 31,4(1) + stw 31,8(1) + stw 31,12(1) + # Clear _dl_starting_up. + stw 31,0(26) + # Go do it! bctr 0: .size _start,0b-_start - # undo '.section text'. + # Undo '.section text'. .previous "); @@ -346,7 +350,7 @@ static ElfW(Addr) _dl_preferred_address = 1 /* We require the address of the PLT entry returned from fixup, not the first word of the PLT entry. */ -#define ELF_FIXUP_RETURN_VALUE(map, result) (&(result)) +#define ELF_FIXUP_RETURN_VALUE(map, result) ((Elf32_Addr) &(result)) /* Nonzero iff TYPE should not be allowed to resolve to one of the main executable's symbols, as for a COPY reloc. */ @@ -396,7 +400,7 @@ elf_machine_runtime_setup (struct link_map *map, int lazy, int profile) { if (map->l_info[DT_JMPREL]) { - int i; + Elf32_Word i; /* Fill in the PLT. Its initial contents are directed to a function earlier in the PLT which arranges for the dynamic linker to be called back. */ @@ -516,10 +520,10 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, { #ifndef RTLD_BOOTSTRAP const Elf32_Sym *const refsym = sym; + extern char **_dl_argv; #endif Elf32_Word loadbase, finaladdr; const int rinfo = ELF32_R_TYPE (reloc->r_info); - extern char **_dl_argv; if (rinfo == R_PPC_NONE) return; @@ -551,9 +555,9 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, + reloc->r_addend); } - /* This is an if/else if chain because GCC 2.7.2.[012] turns case - statements into non-PIC table lookups. When a later version - comes out that fixes this, this should be changed. */ + /* This is still an if/else if chain because GCC uses the GOT to find + the table for table-based switch statements, and we haven't set it + up yet. */ if (rinfo == R_PPC_UADDR32 || rinfo == R_PPC_GLOB_DAT || rinfo == R_PPC_ADDR32 || @@ -561,6 +565,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, { *reloc_addr = finaladdr; } +#ifndef RTLD_BOOTSTRAP else if (rinfo == R_PPC_ADDR16_LO) { *(Elf32_Half*) reloc_addr = finaladdr; @@ -573,7 +578,6 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, { *(Elf32_Half*) reloc_addr = (finaladdr + 0x8000) >> 16; } -#ifndef RTLD_BOOTSTRAP else if (rinfo == R_PPC_REL24) { Elf32_Sword delta = finaladdr - (Elf32_Word) (char *) reloc_addr; @@ -693,12 +697,14 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, #endif } +#ifndef RTLD_BOOTSTRAP if (rinfo == R_PPC_ADDR16_LO || rinfo == R_PPC_ADDR16_HI || rinfo == R_PPC_ADDR16_HA || rinfo == R_PPC_REL24 || rinfo == R_PPC_ADDR24) MODIFIED_CODE_NOQUEUE (reloc_addr); +#endif } #define ELF_MACHINE_NO_REL 1 |