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authorUlrich Drepper <drepper@redhat.com>1997-07-28 22:35:20 +0000
committerUlrich Drepper <drepper@redhat.com>1997-07-28 22:35:20 +0000
commit3996f34b46043ed8ea8fdc6f44377d969d64396b (patch)
tree563f433dab9b5299d81ced72885bf1e8c29b9159 /sysdeps/i386/dl-machine.h
parent0a54e4010fe0085cd36deaff9442a7e88de3270d (diff)
1997-07-28 23:35 Ulrich Drepper <drepper@cygnus.com> * csu/gmon-start.c (__gmon_start__): Call __monstartup not monstartup. * gmon/gmon.c: Rename moncontrol to __moncontrol and monstartup to __monstartup. * gmon/sys/gmon.h: Fix prototypes. * gmon/sys/gmon_out.h: Pretty print. * gmon/bb_exit_func.c (__bb_exit_func): Use memcpy instead of bcopy. * gmon/gmon.c (__monstartup): Likewise. (write_hist): Remove dependency on 32 int. (_mcleanup): Don't call perror, use fprintf. * elf/dl-load.c: Fix handling of current directory in search path. * elf/Makefile (dl-routines): Add dl-profile. * elf/dl-profile.c: New file. * elf/dl-runtime.c (fixup): Add new parameter with address to store relocation result in to elf_machine_relplt. (profile_fixup): New function. * elf/do-rel.h (elf_dynamic_do_rel): Add new parameter with address to store relocation result in to elf_machine_relplt. * elf/dl-support.c: Define _dl_profile and _dl_profile_map. * elf/dynamic-link.h (ELF_DYNAMIC_RELOCATE): Add new parameter and call elf_machine_runtime_setup with extra argument. * elf/dl-reloc.c (_dl_relocate_object): Add new argument to ELF_DYNAMIC_RELOCATE. * elf/link.h: Add prototypes for new functions and variables. * elf/rtld.c: Parse LD_PROFILE and LD_PROFILE_OUTPUT environment variables and call _dl_start_profile if necessary. * include/sys/gmon_out.h: New file. * sysdeps/alpha/dl-machine.h (elf_machine_runtime_setup): Add new parameter to enable profiling. (elf_machine_rela): Add new parameter to specify place to store result in. * sysdeps/m68k/dl-machine.h: Likewise. * sysdeps/mips/dl-machine.h: Likewise. * sysdeps/mips/mips64/dl-machine.h: Likewise. * sysdeps/powerpc/dl-machine.h: Likewise. * sysdeps/sparc/dl-machine.h: Likewise. * sysdeps/sparc64/dl-machine.h: Likewise. * sysdeps/i386/dl-machine.h: Likewise. (elf_machine_runtime_setup): Setup got[2] to _dl_runtime_resolve if we do profiling. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Add code for _dl_runtime_profile. * nis/nss_compat/compat-grp.c (internal_setgrent): Set FD_CLOEXEC for stream on input file. * nis/nss_compat/compat-pwd.c (internal_setpwent): Likewise. * nis/nss_compat/compat-spwd.c (internal_setspent): Likewise. * nss/nss_db/db-XXX.c (internal_setent): Likewise. * nss/nss_db/db-alias.c (internal_setent): Likewise. * nss/nss_db/db-netgrp.c (internal_setent): Likewise. * nss/nss_files/files-XXX.c (internal_setent): Likewise. * nss/nss_files/files-alias.c (internal_setent): Likewise. * nss/nss_files/files-netgrp.c (internal_setent): Likewise. * string/string.h: Pretty print. * sysdeps/i386/fpu/bits/mathinline.h: Major update by John Bowman. Add float and long double versions. 1997-07-27 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/rtld.c (print_unresolved): Replace empty object name by main program name. 1997-07-27 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/generic/htons.c (htons): Renamed from __htons. 1997-07-27 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/bits/byteswap.h: New file. 1997-07-27 23:50 Philip Blundell <Philip.Blundell@pobox.com> * inet/netinet/icmp6.h: Update for new drafts of POSIX.1g and IPv6 advanced API. * inet/netinet/in.h: Likewise. * inet/netinet/ip6.h: Likewise. * sysdeps/unix/sysv/linux/bits/socket.h: Likewise. * posix/sys/types.h: Add socklen_t. * manual/socket.texi: Document some more IPv6 things. * manual/libc.texinfo: Likewise. 1997-07-26 Andreas Jaeger <aj@arthur.rhein-neckar.de> * libc.map: Define missing symbol. 1997-07-27 14:31 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/Makefile: Add nis_findserv. * nis/lckcache.c: Fix typo. * nis/nis_call.c: Fix problems with multihomed servers. * nis/nis_findserv.c: New file. * nis/nis_intern.h: Add more prototypes. * nis/nis_lookup.c (nis_lookup): Don't try the next server if network is unreachable. * nis/nis_table.c (nis_list): Likewise. * nis/nis_ping.c (nis_ping): Use MASTER_ONLY, don't call abort() in error case. * nis/nis_util.c (__nis_finddirectory): Give the right error code back. * nis/ypclnt.c: Make sure, that all sockets are closed.
Diffstat (limited to 'sysdeps/i386/dl-machine.h')
-rw-r--r--sysdeps/i386/dl-machine.h51
1 files changed, 44 insertions, 7 deletions
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index d6fc038411..e517cff0ff 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -81,16 +81,20 @@ elf_machine_load_address (void)
destroys the passed register information. */
static ElfW(Addr) fixup (struct link_map *l, ElfW(Word) reloc_offset)
__attribute__ ((regparm (2), unused));
+static ElfW(Addr) profile_fixup (struct link_map *l, ElfW(Word) reloc_offset,
+ ElfW(Addr) retaddr)
+ __attribute__ ((regparm (3), unused));
#endif
/* Set up the loaded object described by L so its unrelocated PLT
entries will jump to the on-demand fixup code in dl-runtime.c. */
static inline int __attribute__ ((unused))
-elf_machine_runtime_setup (struct link_map *l, int lazy)
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
{
Elf32_Addr *got;
extern void _dl_runtime_resolve (Elf32_Word);
+ extern void _dl_runtime_profile (Elf32_Word);
if (l->l_info[DT_JMPREL] && lazy)
{
@@ -100,9 +104,23 @@ elf_machine_runtime_setup (struct link_map *l, int lazy)
and then jump to _GLOBAL_OFFSET_TABLE[2]. */
got = (Elf32_Addr *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr);
got[1] = (Elf32_Addr) l; /* Identify this shared object. */
- /* This function will get called to fix up the GOT entry indicated by
- the offset on the stack, and then jump to the resolved address. */
- got[2] = (Elf32_Addr) &_dl_runtime_resolve;
+
+ /* The got[2] entry contains the address of a function which gets
+ called to get the address of a so far unresolved function and
+ jump to it. The profiling extension of the dynamic linker allows
+ to intercept the calls to collect information. In this case we
+ don't store the address in the GOT so that all future calls also
+ end in this function. */
+ if (profile)
+ {
+ got[2] = (Elf32_Addr) &_dl_runtime_profile;
+ /* Say that we really want profiling and the timers are started. */
+ _dl_profile_map = l;
+ }
+ else
+ /* This function will get called to fix up the GOT entry indicated by
+ the offset on the stack, and then jump to the resolved address. */
+ got[2] = (Elf32_Addr) &_dl_runtime_resolve;
}
return lazy;
@@ -126,12 +144,31 @@ _dl_runtime_resolve:
xchgl %eax, (%esp) # Get %eax contents end store function address.
ret $8 # Jump to function address.
.size _dl_runtime_resolve, .-_dl_runtime_resolve
+
+ .globl _dl_runtime_profile
+ .type _dl_runtime_profile, @function
+_dl_runtime_profile:
+ pushl %eax # Preserve registers otherwise clobbered.
+ pushl %ecx
+ pushl %edx
+ movl 20(%esp), %ecx # Load return address
+ movl 16(%esp), %edx # Copy args pushed by PLT in register. Note
+ movl 12(%esp), %eax # that `fixup' takes its parameters in regs.
+ call profile_fixup # Call resolver.
+ popl %edx # Get register content back.
+ popl %ecx
+ xchgl %eax, (%esp) # Get %eax contents end store function address.
+ ret $8 # Jump to function address.
+ .size _dl_runtime_profile, .-_dl_runtime_profile
");
#else
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
.globl _dl_runtime_resolve
+ .globl _dl_runtime_profile
.type _dl_runtime_resolve, @function
+ .type _dl_runtime_profile, @function
_dl_runtime_resolve:
+_dl_runtime_profile:
pushl %eax # Preserve registers otherwise clobbered.
pushl %ecx
pushl %edx
@@ -147,6 +184,7 @@ _dl_runtime_resolve:
xchgl %eax, (%esp) # Get %eax contents end store function address.
ret $8 # Jump to function address.
.size _dl_runtime_resolve, .-_dl_runtime_resolve
+ .size _dl_runtime_profile, .-_dl_runtime_profile
");
#endif
/* The PLT uses Elf32_Rel relocs. */
@@ -261,10 +299,9 @@ extern char **_dl_argv;
static inline void
elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
- const Elf32_Sym *sym, const struct r_found_version *version)
+ const Elf32_Sym *sym, const struct r_found_version *version,
+ Elf32_Addr *const reloc_addr)
{
- Elf32_Addr *const reloc_addr = (void *) (map->l_addr + reloc->r_offset);
-
if (ELF32_R_TYPE (reloc->r_info) == R_386_RELATIVE)
{
#ifndef RTLD_BOOTSTRAP