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elf: Remove LD_PROFILE for static binaries

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The _dl_non_dynamic_init does not parse LD_PROFILE, which does not
enable profile for dlopen objects.  Since dlopen is deprecated for
static objects, it is better to remove the support.

It also allows to trim down libc.a of profile support.

Checked on x86_64-linux-gnu.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Adhemerval Zanella 2023-11-06 17:25:46 -03:00
parent 4a133885a7
commit 55f41ef8de
39 changed files with 166 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
elf/Makefile
View File

@ -37,12 +37,12 @@ routines = \
dl-iteratephdr \
dl-libc \
dl-origin \
dl-profstub \
dl-reloc-static-pie \
dl-support \
dl-sym \
dl-sysdep \
enbl-secure \
libc-dl-profstub \
libc-dl_find_object \
libc_early_init \
rtld_static_init \
@ -72,7 +72,6 @@ dl-routines = \
dl-open \
dl-origin \
dl-printf \
dl-profile \
dl-reloc \
dl-runtime \
dl-scope \
@ -117,7 +116,11 @@ elide-routines.os = \
# elide-routines.os
# These object files are only included in the dynamically-linked libc.
shared-only-routines = libc-dl_find_object
shared-only-routines = \
libc-dl-profile \
libc-dl-profstub \
libc-dl_find_object \
# shared-only-routines
# ld.so uses those routines, plus some special stuff for being the program
# interpreter and operating independent of libc.
@ -135,6 +138,7 @@ rtld-routines = \
dl-libc_freeres \
dl-minimal \
dl-mutex \
dl-profile \
dl-sysdep \
dl-usage \
rtld \

10
elf/dl-load.c
View File

@ -1443,11 +1443,6 @@ cannot enable executable stack as shared object requires");
name by which the DSO is actually known. Add that as well. */
if (__glibc_unlikely (origname != NULL))
add_name_to_object (l, origname);
#else
/* Audit modules only exist when linking is dynamic so ORIGNAME
cannot be non-NULL. */
assert (origname == NULL);
#endif
/* When we profile the SONAME might be needed for something else but
loading. Add it right away. */
@ -1455,6 +1450,11 @@ cannot enable executable stack as shared object requires");
&& l->l_info[DT_SONAME] != NULL)
add_name_to_object (l, ((const char *) D_PTR (l, l_info[DT_STRTAB])
+ l->l_info[DT_SONAME]->d_un.d_val));
#else
/* Audit modules only exist when linking is dynamic so ORIGNAME
cannot be non-NULL. */
assert (origname == NULL);
#endif
/* If we have newly loaded libc.so, update the namespace
description. */

12
elf/dl-runtime.c
View File

@ -162,14 +162,14 @@ _dl_fixup (
return elf_machine_fixup_plt (l, result, refsym, sym, reloc, rel_addr, value);
}
#ifndef PROF
#if !defined PROF && defined SHARED
DL_FIXUP_VALUE_TYPE
__attribute ((noinline))
DL_ARCH_FIXUP_ATTRIBUTE
_dl_profile_fixup (
#ifdef ELF_MACHINE_RUNTIME_FIXUP_ARGS
# ifdef ELF_MACHINE_RUNTIME_FIXUP_ARGS
ELF_MACHINE_RUNTIME_FIXUP_ARGS,
#endif
# endif
struct link_map *l, ElfW(Word) reloc_arg,
ElfW(Addr) retaddr, void *regs, long int *framesizep)
{
@ -309,14 +309,12 @@ _dl_profile_fixup (
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
#ifdef SHARED
/* Auditing checkpoint: we have a new binding. Provide the
auditing libraries the possibility to change the value and
tell us whether further auditing is wanted. */
if (defsym != NULL && GLRO(dl_naudit) > 0)
_dl_audit_symbind (l, reloc_result, reloc, defsym, &value, result,
true);
#endif
/* Store the result for later runs. */
if (__glibc_likely (! GLRO(dl_bind_not)))
@ -335,11 +333,9 @@ _dl_profile_fixup (
long int framesize = -1;
#ifdef SHARED
/* Auditing checkpoint: report the PLT entering and allow the
auditors to change the value. */
_dl_audit_pltenter (l, reloc_result, &value, regs, &framesize);
#endif
/* Store the frame size information. */
*framesizep = framesize;
@ -349,4 +345,4 @@ _dl_profile_fixup (
return value;
}
#endif /* PROF */
#endif /* !defined PROF && defined SHARED */

9
elf/dl-support.c
View File

@ -60,10 +60,6 @@ int _dl_dynamic_weak;
/* If nonzero print warnings about problematic situations. */
int _dl_verbose;
/* We never do profiling. */
const char *_dl_profile;
const char *_dl_profile_output;
/* Names of shared object for which the RUNPATHs and RPATHs should be
ignored. */
const char *_dl_inhibit_rpath;
@ -301,11 +297,6 @@ _dl_non_dynamic_init (void)
_dl_dynamic_weak = *(getenv ("LD_DYNAMIC_WEAK") ?: "") == '\0';
_dl_profile_output = getenv ("LD_PROFILE_OUTPUT");
if (_dl_profile_output == NULL || _dl_profile_output[0] == '\0')
_dl_profile_output
= &"/var/tmp\0/var/profile"[__libc_enable_secure ? 9 : 0];
if (__libc_enable_secure)
{
static const char unsecure_envvars[] =

0
elf/dl-profstub.c → elf/libc-dl-profstub.c
View File

5
include/dlfcn.h
View File

@ -135,5 +135,10 @@ extern int __dladdr1 (const void *address, Dl_info *info,
extern int __dlinfo (void *handle, int request, void *arg);
extern char *__dlerror (void);
#ifndef SHARED
# undef DL_CALL_FCT
# define DL_CALL_FCT(fctp, args) ((fctp) args)
#endif
#endif
#endif

4
sysdeps/aarch64/dl-machine.h
View File

@ -68,7 +68,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
{
ElfW(Addr) *got;
extern void _dl_runtime_resolve (ElfW(Word));
extern void _dl_runtime_profile (ElfW(Word));
got = (ElfW(Addr) *) D_PTR (l, l_info[DT_PLTGOT]);
if (got[1])
@ -83,6 +82,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
extern void _dl_runtime_profile (ElfW(Word));
if ( profile)
{
got[2] = (ElfW(Addr)) &_dl_runtime_profile;
@ -94,6 +95,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
/* This function will get called to fix up the GOT entry
indicated by the offset on the stack, and then jump to

2
sysdeps/aarch64/dl-trampoline.S
View File

@ -122,7 +122,7 @@ _dl_runtime_resolve:
cfi_endproc
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifndef PROF
#if !defined PROF && defined SHARED
.globl _dl_runtime_profile
.type _dl_runtime_profile, #function
cfi_startproc

6
sysdeps/alpha/dl-machine.h
View File

@ -75,9 +75,7 @@ elf_machine_runtime_setup (struct link_map *map, struct r_scope_elem *scope[],
int lazy, int profile)
{
extern char _dl_runtime_resolve_new[] attribute_hidden;
extern char _dl_runtime_profile_new[] attribute_hidden;
extern char _dl_runtime_resolve_old[] attribute_hidden;
extern char _dl_runtime_profile_old[] attribute_hidden;
struct pltgot {
char *resolve;
@ -109,6 +107,9 @@ elf_machine_runtime_setup (struct link_map *map, struct r_scope_elem *scope[],
else
resolve = _dl_runtime_resolve_old;
#ifdef SHARED
extern char _dl_runtime_profile_new[] attribute_hidden;
extern char _dl_runtime_profile_old[] attribute_hidden;
if (__builtin_expect (profile, 0))
{
if (secureplt)
@ -123,6 +124,7 @@ elf_machine_runtime_setup (struct link_map *map, struct r_scope_elem *scope[],
GL(dl_profile_map) = map;
}
}
#endif
pg->resolve = resolve;
pg->link = map;

4
sysdeps/alpha/dl-trampoline.S
View File

@ -89,6 +89,7 @@ _dl_runtime_resolve_new:
.globl _dl_runtime_profile_new
.type _dl_runtime_profile_new, @function
#ifdef SHARED
#undef FRAMESIZE
#define FRAMESIZE 20*8
@ -207,6 +208,7 @@ _dl_runtime_profile_new:
cfi_endproc
.size _dl_runtime_profile_new, .-_dl_runtime_profile_new
#endif /* SHARED */
.align 4
.globl _dl_runtime_resolve_old
@ -340,6 +342,7 @@ _dl_runtime_resolve_old:
.usepv _dl_runtime_profile_old, no
.type _dl_runtime_profile_old, @function
#ifdef SHARED
/* We save the registers in a different order than desired by
.mask/.fmask, so we have to use explicit cfi directives. */
cfi_startproc
@ -538,3 +541,4 @@ _dl_runtime_profile_old:
cfi_endproc
.size _dl_runtime_profile_old, .-_dl_runtime_profile_old
#endif /* SHARED */

4
sysdeps/arm/dl-machine.h
View File

@ -65,7 +65,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
{
Elf32_Addr *got;
extern void _dl_runtime_resolve (Elf32_Word);
extern void _dl_runtime_profile (Elf32_Word);
if (l->l_info[DT_JMPREL] && lazy)
{
@ -88,6 +87,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
extern void _dl_runtime_profile (Elf32_Word);
if (profile)
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
@ -99,6 +100,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
/* 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;

2
sysdeps/arm/dl-trampoline.S
View File

@ -70,7 +70,7 @@ _dl_runtime_resolve:
cfi_endproc
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifndef PROF
#if !defined PROF && defined SHARED
.globl _dl_runtime_profile
.type _dl_runtime_profile, #function
CFI_SECTIONS

36
sysdeps/hppa/dl-machine.h
View File

@ -195,7 +195,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
end_jmprel = jmprel + l->l_info[DT_PLTRELSZ]->d_un.d_val;
extern void _dl_runtime_resolve (void);
extern void _dl_runtime_profile (void);
/* Linking lazily */
if (lazy)
@ -235,22 +234,9 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
got[1] = (Elf32_Addr) l;
/* This function will be called to perform the relocation. */
if (__builtin_expect (!profile, 1))
{
/* If a static application called us, then _dl_runtime_resolve is not
a function descriptor, but the *real* address of the function... */
if((unsigned long) &_dl_runtime_resolve & 3)
{
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_resolve & ~3))->ip;
}
else
{
/* Static executable! */
got[-2] = (Elf32_Addr) &_dl_runtime_resolve;
}
}
else
#ifdef SHARED
extern void _dl_runtime_profile (void);
if (__glibc_unlikely (profile))
{
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
@ -272,6 +258,22 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
got[-2] = (Elf32_Addr) &_dl_runtime_profile;
}
}
else
#endif
{
/* If a static application called us, then _dl_runtime_resolve is not
a function descriptor, but the *real* address of the function... */
if((unsigned long) &_dl_runtime_resolve & 3)
{
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_resolve & ~3))->ip;
}
else
{
/* Static executable! */
got[-2] = (Elf32_Addr) &_dl_runtime_resolve;
}
}
/* Plunk in the gp of this function descriptor so we
can make the call to _dl_runtime_xxxxxx */
got[-1] = ltp;

2
sysdeps/hppa/dl-trampoline.S
View File

@ -156,6 +156,7 @@ _dl_runtime_resolve:
cfi_endproc
.size _dl_runtime_resolve, . - _dl_runtime_resolve
#ifdef SHARED
.text
.global _dl_runtime_profile
.type _dl_runtime_profile,@function
@ -359,3 +360,4 @@ L(cont):
.PROCEND
cfi_endproc
.size _dl_runtime_profile, . - _dl_runtime_profile
#endif

2
sysdeps/i386/dl-machine.h
View File

@ -92,6 +92,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
if (__glibc_unlikely (profile))
{
got[2] = (shstk_enabled
@ -105,6 +106,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
/* 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] = (shstk_enabled

2
sysdeps/i386/dl-trampoline.S
View File

@ -70,7 +70,7 @@ _dl_runtime_resolve_shstk:
cfi_endproc
.size _dl_runtime_resolve_shstk, .-_dl_runtime_resolve_shstk
#ifndef PROF
#if !defined PROF && defined SHARED
# The SHSTK compatible version.
.globl _dl_runtime_profile_shstk
.type _dl_runtime_profile_shstk, @function

10
sysdeps/ia64/dl-machine.h
View File

@ -121,9 +121,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
reserve[0] = (Elf64_Addr) l;
/* This function will be called to perform the relocation. */
if (!profile)
doit = (Elf64_Addr) ELF_PTR_TO_FDESC (&_dl_runtime_resolve)->ip;
else
#ifdef SHARED
if (__glibc_unlikely (profile))
{
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
@ -134,6 +133,11 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
}
doit = (Elf64_Addr) ELF_PTR_TO_FDESC (&_dl_runtime_profile)->ip;
}
else
#endif
{
doit = (Elf64_Addr) ELF_PTR_TO_FDESC (&_dl_runtime_resolve)->ip;
}
reserve[1] = doit;
reserve[2] = gp;

2
sysdeps/ia64/dl-trampoline.S
View File

@ -188,7 +188,7 @@ END(_dl_runtime_resolve)
#define PLTENTER_FRAME_SIZE (4*8 + 8*8 + 8*16 + 2*8 + 16)
#define PLTEXIT_FRAME_SIZE (PLTENTER_FRAME_SIZE + 4*8 + 8*16)
#ifndef PROF
#if !defined PROF && defined SHARED
ENTRY(_dl_runtime_profile)
{ .mii
.prologue

6
sysdeps/loongarch/dl-machine.h
View File

@ -287,15 +287,16 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
if (profile != 0)
{
#if !defined __loongarch_soft_float
# if !defined __loongarch_soft_float
if (SUPPORT_LASX)
gotplt[0] = (ElfW(Addr)) &_dl_runtime_profile_lasx;
else if (SUPPORT_LSX)
gotplt[0] = (ElfW(Addr)) &_dl_runtime_profile_lsx;
else
#endif
# endif
gotplt[0] = (ElfW(Addr)) &_dl_runtime_profile;
if (GLRO(dl_profile) != NULL
@ -305,6 +306,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
/* This function will get called to fix up the GOT entry
indicated by the offset on the stack, and then jump to

2
sysdeps/loongarch/dl-trampoline.h
View File

@ -126,6 +126,7 @@ ENTRY (_dl_runtime_resolve)
jirl zero, t1, 0
END (_dl_runtime_resolve)
#ifdef SHARED
#include "dl-link.h"
ENTRY (_dl_runtime_profile)
@ -367,3 +368,4 @@ ENTRY (_dl_runtime_profile)
jirl zero, ra, 0
END (_dl_runtime_profile)
#endif /* SHARED */

4
sysdeps/m68k/dl-machine.h
View File

@ -75,7 +75,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
{
Elf32_Addr *got;
extern void _dl_runtime_resolve (Elf32_Word);
extern void _dl_runtime_profile (Elf32_Word);
if (l->l_info[DT_JMPREL] && lazy)
{
@ -93,6 +92,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
extern void _dl_runtime_profile (Elf32_Word);
if (profile)
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
@ -106,6 +107,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
}
}
else
#endif
/* 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;

2
sysdeps/m68k/dl-trampoline.S
View File

@ -60,6 +60,7 @@ _dl_runtime_resolve:
cfi_endproc
.size _dl_runtime_resolve, . - _dl_runtime_resolve
#ifdef SHARED
.text
.globl _dl_runtime_profile
.type _dl_runtime_profile, @function
@ -220,3 +221,4 @@ _dl_runtime_profile:
rts
cfi_endproc
.size _dl_runtime_profile, . - _dl_runtime_profile
#endif /* SHARED */

2
sysdeps/powerpc/powerpc32/dl-machine.c
View File

@ -226,7 +226,7 @@ __elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
Elf32_Word dlrr;
Elf32_Word offset;
#ifndef PROF
#if !defined PROF && defined SHARED
dlrr = (Elf32_Word) (profile
? _dl_prof_resolve
: _dl_runtime_resolve);

10
sysdeps/powerpc/powerpc32/dl-machine.h
View File

@ -188,15 +188,19 @@ elf_machine_runtime_setup (struct link_map *map, struct r_scope_elem *scope[],
extern void _dl_runtime_resolve (void);
extern void _dl_prof_resolve (void);
if (__glibc_likely (!profile))
dlrr = _dl_runtime_resolve;
else
#ifdef SHARED
if (__glibc_unlikely (profile))
{
if (GLRO(dl_profile) != NULL
&&_dl_name_match_p (GLRO(dl_profile), map))
GL(dl_profile_map) = map;
dlrr = _dl_prof_resolve;
}
else
#endif
{
dlrr = _dl_runtime_resolve;
}
got = (Elf32_Addr *) map->l_info[DT_PPC(GOT)]->d_un.d_ptr;
glink = got[1];
got[1] = (Elf32_Addr) dlrr;

2
sysdeps/powerpc/powerpc32/dl-trampoline.S
View File

@ -70,7 +70,7 @@ _dl_runtime_resolve:
cfi_endproc
.size _dl_runtime_resolve,.-_dl_runtime_resolve
#ifndef PROF
#if !defined PROF && defined SHARED
.align 2
.globl _dl_prof_resolve
.type _dl_prof_resolve,@function

20
sysdeps/powerpc/powerpc64/dl-machine.h
View File

@ -362,13 +362,19 @@ elf_machine_runtime_setup (struct link_map *map, struct r_scope_elem *scope[],
Elf64_Word offset;
Elf64_Addr dlrr;
dlrr = (Elf64_Addr) (profile ? _dl_profile_resolve
: _dl_runtime_resolve);
if (profile && GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), map))
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
GL(dl_profile_map) = map;
#ifdef SHARED
if (__glibc_unlikely (profile))
{
dlrr = (Elf64_Addr) _dl_profile_resolve;
if (profile && GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), map))
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
GL(dl_profile_map) = map;
}
else
#endif
dlrr = (Elf64_Addr) _dl_runtime_resolve;
#if _CALL_ELF != 2
/* We need to stuff the address/TOC of _dl_runtime_resolve

2
sysdeps/powerpc/powerpc64/dl-trampoline.S
View File

@ -195,7 +195,7 @@ END(_dl_runtime_resolve)
and r11 contains the link_map (from PLT0+16). The link_map becomes
parm1 (r3) and the index (r0) needs to be converted to an offset
(index * 24) in parm2 (r4). */
#ifndef PROF
#if !defined PROF && defined SHARED
.hidden _dl_profile_resolve
ENTRY (_dl_profile_resolve, 4)
/* Spill r30, r31 to preserve the link_map* and reloc_addr, in case we

8
sysdeps/s390/s390-32/dl-machine.h
View File

@ -124,16 +124,17 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
if (__glibc_unlikely (profile))
{
#if defined HAVE_S390_VX_ASM_SUPPORT
# if defined HAVE_S390_VX_ASM_SUPPORT
if (GLRO(dl_hwcap) & HWCAP_S390_VX)
got[2] = (Elf32_Addr) &_dl_runtime_profile_vx;
else
got[2] = (Elf32_Addr) &_dl_runtime_profile;
#else
# else
got[2] = (Elf32_Addr) &_dl_runtime_profile;
#endif
# endif
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
@ -142,6 +143,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
/* 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. */

2
sysdeps/s390/s390-32/dl-trampoline.h
View File

@ -148,7 +148,7 @@ _dl_runtime_resolve:
#undef F0_OFF
#undef F2_OFF
#ifndef PROF
#if !defined PROF && defined SHARED
# define SIZEOF_STRUCT_LA_S390_32_REGS 168
# define REGS_OFF -264
# define R2_OFF -264

8
sysdeps/s390/s390-64/dl-machine.h
View File

@ -111,16 +111,17 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
if (__glibc_unlikely (profile))
{
#if defined HAVE_S390_VX_ASM_SUPPORT
# if defined HAVE_S390_VX_ASM_SUPPORT
if (GLRO(dl_hwcap) & HWCAP_S390_VX)
got[2] = (Elf64_Addr) &_dl_runtime_profile_vx;
else
got[2] = (Elf64_Addr) &_dl_runtime_profile;
#else
# else
got[2] = (Elf64_Addr) &_dl_runtime_profile;
#endif
# endif
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
@ -129,6 +130,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
/* 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. */

2
sysdeps/s390/s390-64/dl-trampoline.h
View File

@ -150,7 +150,7 @@ _dl_runtime_resolve:
#undef F4_OFF
#undef F6_OFF
#ifndef PROF
#if !defined PROF && defined SHARED
# define SIZEOF_STRUCT_LA_S390_64_REGS 200
# define REGS_OFF -360
# define R2_OFF -360

2
sysdeps/sh/dl-machine.h
View File

@ -101,6 +101,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
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. */
#ifdef SHARED
if (profile)
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
@ -110,6 +111,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
/* 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;

2
sysdeps/sh/dl-trampoline.S
View File

@ -142,6 +142,7 @@ _dl_runtime_resolve:
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifdef SHARED
.globl _dl_runtime_profile
.type _dl_runtime_profile,@function
cfi_startproc
@ -428,3 +429,4 @@ _dl_runtime_profile:
8: .long _dl_audit_pltexit
#endif
.size _dl_runtime_profile, .-_dl_runtime_profile
#endif /* SHARED */

4
sysdeps/sparc/sparc32/dl-machine.h
View File

@ -116,7 +116,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
bits of %g1 with an offset into the .rela.plt section and jump to
the beginning of the PLT. */
plt = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
if (__builtin_expect(profile, 0))
#ifdef SHARED
if (__glibc_unlikely (profile))
{
rfunc = (Elf32_Addr) &_dl_runtime_profile;
@ -125,6 +126,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
rfunc = (Elf32_Addr) &_dl_runtime_resolve;
}

2
sysdeps/sparc/sparc32/dl-trampoline.S
View File

@ -47,6 +47,7 @@ _dl_runtime_resolve:
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifdef SHARED
/* For the profiling cases we pass in our stack frame
* as the base of the La_sparc32_regs, so it looks
* like:
@ -185,3 +186,4 @@ _dl_runtime_profile:
cfi_endproc
.size _dl_runtime_profile, .-_dl_runtime_profile
#endif

4
sysdeps/sparc/sparc64/dl-machine.h
View File

@ -136,7 +136,8 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
Elf64_Addr res0_addr, res1_addr;
unsigned int *plt = (void *) D_PTR (l, l_info[DT_PLTGOT]);
if (__builtin_expect(profile, 0))
#ifdef SHARED
if (__glibc_unlikely (profile))
{
res0_addr = (Elf64_Addr) &_dl_runtime_profile_0;
res1_addr = (Elf64_Addr) &_dl_runtime_profile_1;
@ -146,6 +147,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0;
res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1;

2
sysdeps/sparc/sparc64/dl-trampoline.S
View File

@ -92,6 +92,7 @@ _dl_runtime_resolve_1:
.size _dl_runtime_resolve_1, .-_dl_runtime_resolve_1
#ifdef SHARED
/* For the profiling cases we pass in our stack frame
* as the base of the La_sparc64_regs, so it looks
* like:
@ -323,3 +324,4 @@ _dl_runtime_profile_1:
cfi_endproc
.size _dl_runtime_resolve_1, .-_dl_runtime_resolve_1
#endif

2
sysdeps/x86_64/dl-machine.h
View File

@ -89,6 +89,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
const struct cpu_features* cpu_features = __get_cpu_features ();
#ifdef SHARED
/* 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
@ -111,6 +112,7 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
GL(dl_profile_map) = l;
}
else
#endif
{
/* This function will get called to fix up the GOT entry
indicated by the offset on the stack, and then jump to

66
sysdeps/x86_64/dl-trampoline.S
View File

@ -53,45 +53,49 @@
#define RESTORE_AVX
#define VEC_SIZE 64
#define VMOVA vmovdqa64
#define VEC(i) zmm##i
#define _dl_runtime_profile _dl_runtime_profile_avx512
# define SECTION(p) p##.evex512
#include "dl-trampoline.h"
#undef _dl_runtime_profile
#undef VEC
#undef VMOVA
#undef VEC_SIZE
#undef SECTION
#if MINIMUM_X86_ISA_LEVEL <= AVX_X86_ISA_LEVEL
# define VEC_SIZE 32
# define VMOVA vmovdqa
# define VEC(i) ymm##i
# define SECTION(p) p##.avx
# define _dl_runtime_profile _dl_runtime_profile_avx
#ifdef SHARED
# define VEC_SIZE 64
# define VMOVA vmovdqa64
# define VEC(i) zmm##i
# define _dl_runtime_profile _dl_runtime_profile_avx512
# define SECTION(p) p##.evex512
# include "dl-trampoline.h"
# undef _dl_runtime_profile
# undef VEC
# undef VMOVA
# undef VEC_SIZE
# undef SECTION
#endif
# if MINIMUM_X86_ISA_LEVEL <= AVX_X86_ISA_LEVEL
# define VEC_SIZE 32
# define VMOVA vmovdqa
# define VEC(i) ymm##i
# define SECTION(p) p##.avx
# define _dl_runtime_profile _dl_runtime_profile_avx
# include "dl-trampoline.h"
# undef _dl_runtime_profile
# undef VEC
# undef VMOVA
# undef VEC_SIZE
# undef SECTION
# endif
# if MINIMUM_X86_ISA_LEVEL < AVX_X86_ISA_LEVEL
/* movaps/movups is 1-byte shorter. */
# define VEC_SIZE 16
# define VMOVA movaps
# define VEC(i) xmm##i
# define _dl_runtime_profile _dl_runtime_profile_sse
# undef RESTORE_AVX
# include "dl-trampoline.h"
# undef _dl_runtime_profile
# undef VEC
# undef VMOVA
# undef VEC_SIZE
# endif
#endif /* SHARED */
#if MINIMUM_X86_ISA_LEVEL < AVX_X86_ISA_LEVEL
/* movaps/movups is 1-byte shorter. */
# define VEC_SIZE 16
# define VMOVA movaps
# define VEC(i) xmm##i
# define _dl_runtime_profile _dl_runtime_profile_sse
# undef RESTORE_AVX
# include "dl-trampoline.h"
# undef _dl_runtime_profile
# undef VEC
# undef VMOVA
# undef VEC_SIZE
# define USE_FXSAVE
# define STATE_SAVE_ALIGNMENT 16
# define _dl_runtime_resolve _dl_runtime_resolve_fxsave