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authorUlrich Drepper <drepper@redhat.com>1997-03-08 05:28:20 +0000
committerUlrich Drepper <drepper@redhat.com>1997-03-08 05:28:20 +0000
commit4cca6b868f08e4f95a4c3786a69135676b086c50 (patch)
treeea8f4fbb6972588bc85c5979175c1e5cb6734993 /elf
parentf5f52655ceb5152d79ca88db5293fa1136969303 (diff)
downloadglibc-4cca6b868f08e4f95a4c3786a69135676b086c50.tar.gz
1997-03-08 05:30 Ulrich Drepper <drepper@cygnus.com> * argp/Makefile (routines): Add argp-eexst. * argp/argp-ba.c (argp_program_bug_address): Make `const'. * argp/argp-eexst.c: New file. Define exit status variable. * argp/argp-help.c (__argp_state_help): Use argp_err_exit_status variable instead of always exiting with value 1. * argp/argp-pv.c (argp_program_version): Make `const'. * argp/argp.h: Declare argp_err_exit_status. Patches by Miles Bader <miles@gnu.ai.mit.edu>. * locale/programs/localedef.c: Use argp_err_exit_status to terminate with correct value. * inet/rcmd.c (iruserok): Use euidaccess instead of half-hearted switching of UID before opening .rhosts. * libio/vsnprintf.c: Change implementation to follow ISO C 9X proposal. The return value now is always the number of characters which would be written if enough space is available. * manual/stdio.texi: Update description for new behaviour. * locale/locale.h (__locale_t): Don't use __locale_t for struct name and pointer to struct since old gccs cannot keep the namespaces apart. Rename struct to __locale_struct. * locale/duplocale.h: Likewise. * locale/newlocale.h: Likewise. * math/Makefile (headers): Add complex.h and cmathcalls.h. (routines): Remove w_cabs. Add conj, cimag, creal, and cabs. * math/math.h: Undefine __MATHDECL_1, __MATHDECL, and __MATHCALL after use. (signgam): Move declaration to here from mathcalls.h. * math/mathcalls.h (cabs, __cabs_complex, signgam): Remove definition. Correct comment for fmin and fmax. Start implementing complex math function from ISO C 9X. * math/complex.h: New file. * math/cmathcalls.h: New file. * math/cabs.c: New file. * math/cabsf.c: New file. * math/cabsl.c: New file. * math/cimag.c: New file. * math/cimagf.c: New file. * math/cimagl.c: New file. * math/conj.c: New file. * math/conjf.c: New file. * math/conjl.c: New file. * math/creal.c: New file. * math/crealf.c: New file. * math/creall.c: New file. * sysdeps/libm-ieee754/w_cabs.c: Removed. * sysdeps/libm-ieee754/w_cabsf.c: Removed. * sysdeps/libm-ieee754/w_cabsl.c: Removed. * posix/regex.c: Merge with regex sources from Arnold Robbins' version in GNU awk. * posix/regex.h: Likewise. Add regex test suite by Tom Lord. * posix/Makefile (distribute): Add TESTS, TESTS2C.sed, and testcases.h. (tests): Add runtests. (before-compile): Add testcases.h. (testcases.h): New rule to generate header with tests. * posix/TESTS: New file. * posix/TESTS2C.sed.: New file. * posix/runtests.c: New file. * posix/testcases.h: New file. * sysdeps/unix/sysv/linux/poll.c: Test whether poll syscall is available and use fall-back implementation if not. * sysdeps/unix/sysv/linux/syscalls.list: Sort entries. * time/ialloc.c: Update from tzcode1997c. * time/private.h: Likewise. * time/scheck.c: Likewise. * time/tzselect.ksh: Likewise. * time/zdump.c: Likewise. * time/zic.c: Likewise. * time/tzfile.c: Pretty print. 1997-03-06 07:37 Geoff Keating <geoffk@ozemail.com.au> Port to powerpc-*-linux-gnu. Slightly tested, under MkLinux, on a 601. * sysdeps/powerpc/Implies: Added. * sysdeps/powerpc/__longjmp.S: Added. * sysdeps/powerpc/__math.h: Added. * sysdeps/powerpc/bsd-_setjmp.S: Added. * sysdeps/powerpc/bsd-setjmp.S: Added. * sysdeps/powerpc/dl-machine.h: Added. * sysdeps/powerpc/ffs.c: Added. * sysdeps/powerpc/fpu_control.h: Added. * sysdeps/powerpc/jmp_buf.h: Added. * sysdeps/powerpc/setjmp.S: Added. * sysdeps/powerpc/strlen.s: Added. * sysdeps/powerpc/elf/start.c: Added. * sysdeps/powerpc/fpu_control.h: Added. * sysdeps/powerpc/jmp_buf.h: Added. * sysdeps/unix/sysv/linux/powerpc/Dist: Added. * sysdeps/unix/sysv/linux/powerpc/_exit.S: Added. * sysdeps/unix/sysv/linux/powerpc/brk.c: Added. * sysdeps/unix/sysv/linux/powerpc/clone.S: Added. * sysdeps/unix/sysv/linux/powerpc/init-first.h: Added. * sysdeps/unix/sysv/linux/powerpc/ioctl-types.h: Added. * sysdeps/unix/sysv/linux/powerpc/profil.c: Added. * sysdeps/unix/sysv/linux/powerpc/sigreturn.S: Added. * sysdeps/unix/sysv/linux/powerpc/socket.S: Added. * sysdeps/unix/sysv/linux/powerpc/syscall.S: Added. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Added. * sysdeps/unix/sysv/linux/powerpc/sysdep.c: Added. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Added. * sysdeps/unix/sysv/linux/powerpc/termbits.h: Added. * sysdeps/unix/sysv/linux/powerpc/sys/syscall.h: Added. 1997-03-05 05:24 Geoff Keating <geoffk@ozemail.com.au> * elf/dl-runtime.c (fixup): Add ELF_FIXUP_RETURNS_ADDRESS switch, because knowing the first instruction of a PowerPC PLT trampoline is not very helpful. 1997-03-04 08:04 Geoff Keating <geoffk@ozemail.com.au> * elf/dl-load.c (ELF_PREFERRED_ADDRESS, ELF_PREFERRED_ADDRESS_DATA, ELF_FIXED_ADDRESS): Added. These are for dl-machine.h to indicate a preference as to where executables should be loaded. 1997-02-28 08:50 Geoff Keating <geoffk@ozemail.com.au> * elf/elf.h: Add in all those PowerPC reloc types. 1997-02-24 07:12 Geoff Keating <geoffk@ozemail.com.au> * stdio-common/vfscanf.c: Use __va_copy if available. 1997-03-06 13:50 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/malloc.c (mprotect) [_LIBC]: Define as __mprotect to clean up namespace. 1997-03-07 14:27 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-ieee754/s_fpclassify.c (__fpclassify): Don't use non-existing GET_WORDS macro, use EXTRACT_WORDS. Reported by Andres Schwab <schwab@issan.informatik.uni-dortmund.de>. 1997-03-07 05:27 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/i386/sigaction.c: The user- and kernel-level sigaction structure is different. handle this correctly. Bug report by Andres Jaeger <jaeger@informatik.uni-kl.de>. 1997-03-06 05:55 David Engel <david@sw.ods.com> * sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Also recognize cache entries with flag == 3. 1997-03-06 01:05 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/netinet/in.h (INADDR_NONE): Cast to unsigned int. (INADDR_LOOPBACK): Likewise. * sysdeps/unix/sysv/linux/netinet/in.h: Likewise. * manual/socket.texi: Correct types of INADDR_* constants from unsigned long to unsigned. 1997-03-05 23:14 Ulrich Drepper <drepper@cygnus.com> * time/antarctica: Update from tzdata1997c. * time/asia: Likewise. * time/zone.tab: Likewise. 1997-03-05 00:43 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in (libc_cv_asm_symver_directive, libc_cv_ld_version_script_option): Remove unknown instruction from assembler test file. 1997-03-04 19:14 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/__math.h: Update feature tests to use __USE_ISOC9X. [__USE_ISOC9X]: Define __log2 and __exp2 inlines. (fabs): Remove defininition, it is a gcc builtin. (sqrt, __sqrt): Remove definition, they have wrappers in libm. 1997-03-04 10:11 H.J. Lu <hjl@lucon.org> * sunrpc/Makefile ($(objpfx)rpc-proto.c): Create subdir before generating file. 1997-03-05 03:59 Ulrich Drepper <drepper@cygnus.com> * inet/rcmd.c (__ivaliduser): Don't use getline, but __getline instead to avoid namespace problems. Reported by David Mosberger-Tang <davidm@AZStarNet.COM>. 1997-03-03 19:01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * login/utmp_file.c: Fix previous change. Make portable by checking the _HAVE_UT_* feature macros. * libio/fileops.c (_IO_file_finish): Likewise.
Diffstat (limited to 'elf')
-rw-r--r--elf/dl-load.c31
-rw-r--r--elf/dl-runtime.c4
-rw-r--r--elf/elf.h65
3 files changed, 96 insertions, 4 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c
index a103d38548..10cc074a6a 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -67,6 +67,18 @@ int _dl_zerofd = -1;
#define ANONFD _dl_zerofd
#endif
+/* Handle situations where we have a preferred location in memory for
+ the shared objects. */
+#ifdef ELF_PREFERRED_ADDRESS_DATA
+ELF_PREFERRED_ADDRESS_DATA;
+#endif
+#ifndef ELF_PREFERRED_ADDRESS
+#define ELF_PREFERRED_ADDRESS(loader, maplength, mapstartpref) (mapstartpref)
+#endif
+#ifndef ELF_FIXED_ADDRESS
+#define ELF_FIXED_ADDRESS(loader, mapstart) ((void) 0)
+#endif
+
size_t _dl_pagesize;
@@ -315,11 +327,16 @@ _dl_map_object_from_fd (char *name, int fd, char *realname,
So we map the first segment without MAP_FIXED, but with its
extent increased to cover all the segments. Then we remove
access from excess portion, and there is known sufficient space
- there to remap from the later segments. */
+ there to remap from the later segments.
+
+ As a refinement, sometimes we have an address that we would
+ prefer to map such objects at; but this is only a preference,
+ the OS can do whatever it likes. */
caddr_t mapat;
- mapat = map_segment (c->mapstart,
- loadcmds[nloadcmds - 1].allocend - c->mapstart,
- c->prot, 0, c->mapoff);
+ ElfW(Addr) mappref;
+ size_t maplength = loadcmds[nloadcmds - 1].allocend - c->mapstart;
+ mappref = ELF_PREFERRED_ADDRESS (loader, maplength, c->mapstart);
+ mapat = map_segment (mappref, maplength, c->prot, 0, c->mapoff);
l->l_addr = (ElfW(Addr)) mapat - c->mapstart;
/* Change protection on the excess portion to disallow all access;
@@ -332,6 +349,12 @@ _dl_map_object_from_fd (char *name, int fd, char *realname,
0);
goto postmap;
}
+ else
+ {
+ /* Notify ELF_PREFERRED_ADDRESS that we have to load this one
+ fixed. */
+ ELF_FIXED_ADDRESS (loader, c->mapstart);
+ }
while (c < &loadcmds[nloadcmds])
{
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index 08c605cd0f..502c35d5d2 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -153,7 +153,11 @@ fixup (
*_dl_global_scope_end = NULL;
/* Return the address that was written by the relocation. */
+#ifdef ELF_FIXUP_RETURNS_ADDRESS
+ return (ElfW(Addr))(l->l_addr + reloc->r_offset);
+#else
return *(ElfW(Addr) *) (l->l_addr + reloc->r_offset);
+#endif
}
diff --git a/elf/elf.h b/elf/elf.h
index f6779ba16a..76f6c6865d 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -915,6 +915,71 @@ typedef Elf32_Addr Elf32_Conflict;
#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
+
+/* PowerPC specific declarations */
+
+/* PowerPC relocations defined by the ABIs */
+#define R_PPC_NONE 0
+#define R_PPC_ADDR32 1
+#define R_PPC_ADDR24 2
+#define R_PPC_ADDR16 3
+#define R_PPC_ADDR16_LO 4
+#define R_PPC_ADDR16_HI 5
+#define R_PPC_ADDR16_HA 6
+#define R_PPC_ADDR14 7
+#define R_PPC_ADDR14_BRTAKEN 8
+#define R_PPC_ADDR14_BRNTAKEN 9
+#define R_PPC_REL24 10
+#define R_PPC_REL14 11
+#define R_PPC_REL14_BRTAKEN 12
+#define R_PPC_REL14_BRNTAKEN 13
+#define R_PPC_GOT16 14
+#define R_PPC_GOT16_LO 15
+#define R_PPC_GOT16_HI 16
+#define R_PPC_GOT16_HA 17
+#define R_PPC_PLTREL24 18
+#define R_PPC_COPY 19
+#define R_PPC_GLOB_DAT 20
+#define R_PPC_JMP_SLOT 21
+#define R_PPC_RELATIVE 22
+#define R_PPC_LOCAL24PC 23
+#define R_PPC_UADDR32 24
+#define R_PPC_UADDR16 25
+#define R_PPC_REL32 26
+#define R_PPC_PLT32 27
+#define R_PPC_PLTREL32 28
+#define R_PPC_PLT16_LO 29
+#define R_PPC_PLT16_HI 30
+#define R_PPC_PLT16_HA 31
+#define R_PPC_SDAREL16 32
+#define R_PPC_SECTOFF 33
+#define R_PPC_SECTOFF_LO 34
+#define R_PPC_SECTOFF_HI 35
+#define R_PPC_SECTOFF_HA 36
+
+/* The remaining relocs are from the Embedded ELF ABI, and are not
+ in the SVR4 ELF ABI. */
+#define R_PPC_EMB_NADDR32 101
+#define R_PPC_EMB_NADDR16 102
+#define R_PPC_EMB_NADDR16_LO 103
+#define R_PPC_EMB_NADDR16_HI 104
+#define R_PPC_EMB_NADDR16_HA 105
+#define R_PPC_EMB_SDAI16 106
+#define R_PPC_EMB_SDA2I16 107
+#define R_PPC_EMB_SDA2REL 108
+#define R_PPC_EMB_SDA21 109
+#define R_PPC_EMB_MRKREF 110
+#define R_PPC_EMB_RELSEC16 111
+#define R_PPC_EMB_RELST_LO 112
+#define R_PPC_EMB_RELST_HI 113
+#define R_PPC_EMB_RELST_HA 114
+#define R_PPC_EMB_BIT_FLD 115
+#define R_PPC_EMB_RELSDA 116
+
+/* This is a phony reloc to handle any old fashioned TOC16 references
+ that may still be in object files. */
+#define R_PPC_TOC16 255
+
__END_DECLS
#endif /* elf.h */