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authorSiddhesh Poyarekar <siddhesh@redhat.com>2014-11-20 11:42:00 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2014-11-24 11:41:42 +0530
commit279bc5b3c384c09746fbadb2b68c6db9e833c064 (patch)
treee0f6a347b712368adaef58c3befa459d6c262117
parente0cfa51064489fdff85953bad1e0f3c42e093662 (diff)
downloadglibc-279bc5b3c384c09746fbadb2b68c6db9e833c064.tar.gz
Use MODULE_NAME in stap-probe instead of IN_LIB
Define MODULE_NAME in the build command and define IN_MODULE using MODULE_NAME. Verified that the generated code is unchanged on x86_64. * Makeconfig (module-cppflags-real): Define MODULE_NAME instead of IN_MODULE. * include/libc-symbols.h (IN_MODULE): Define using MODULE_NAME. (PASTE_NAME, PASTE_NAME1): New macros. * include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead of IN_LIB. (STAP_PROBE_ASM): Likewise.
-rw-r--r--ChangeLog11
-rw-r--r--Makeconfig6
-rw-r--r--include/libc-symbols.h4
-rw-r--r--include/stap-probe.h6
4 files changed, 21 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog
index 0bde88ca37..43759c8ad7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2014-11-24 Siddhesh Poyarekar <siddhesh@redhat.com>
+
+ * Makeconfig (module-cppflags-real): Define MODULE_NAME
+ instead of IN_MODULE.
+ * include/libc-symbols.h (IN_MODULE): Define using
+ MODULE_NAME.
+ (PASTE_NAME, PASTE_NAME1): New macros.
+ * include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead
+ of IN_LIB.
+ (STAP_PROBE_ASM): Likewise.
+
2014-11-23 Samuel Thibault <samuel.thibault@ens-lyon.org>
* sysdeps/mach/hurd/i386/init-first.c (posixland_init): Call
diff --git a/Makeconfig b/Makeconfig
index 1a26cc5568..bbf546072c 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -830,9 +830,9 @@ in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
libc))
module-cppflags-real = -include $(common-objpfx)libc-modules.h \
- -DIN_MODULE=MODULE_$(in-module)
+ -DMODULE_NAME=$(in-module)
-# We don't need libc-modules.h and the IN_MODULE definition for
+# We don't need libc-modules.h and the MODULE_NAME definition for
# shlib-version.v.i.
module-cppflags = $(if $(filter $(@F),$(skip-module-cppflags)), \
,$(module-cppflags-real))
@@ -1008,7 +1008,7 @@ postclean-generated += soversions.mk soversions.i \
before-compile += $(common-objpfx)libc-modules.h
ifeq ($(soversions.mk-done),t)
# Generate a header with macro definitions for use with the IS_IN macro.
-# These are the possible values for the IN_MODULE macro defined when building
+# These are the possible values for the MODULE_NAME macro defined when building
# sources, to identify which module the translation unit is going to be built
# into.
$(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index 9c5c9bb850..5cbf47308d 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -20,8 +20,12 @@
#ifndef _LIBC_SYMBOLS_H
#define _LIBC_SYMBOLS_H 1
+#define IN_MODULE PASTE_NAME (MODULE_, MODULE_NAME)
#define IS_IN(lib) (IN_MODULE == MODULE_##lib)
+#define PASTE_NAME(a,b) PASTE_NAME1 (a,b)
+#define PASTE_NAME1(a,b) a##b
+
/* This file's macros are included implicitly in the compilation of every
file in the C library by -imacros.
diff --git a/include/stap-probe.h b/include/stap-probe.h
index 688646c9e9..150fc1ec26 100644
--- a/include/stap-probe.h
+++ b/include/stap-probe.h
@@ -30,7 +30,7 @@
Systemtap's header defines the macros STAP_PROBE (provider, name) and
STAP_PROBEn (provider, name, arg1, ..., argn). For "provider" we paste
- in the IN_LIB name (libc, libpthread, etc.) automagically.
+ in MODULE_NAME (libc, libpthread, etc.) automagically.
The format of the arg parameters is discussed here:
@@ -53,7 +53,7 @@
# endif
# define LIBC_PROBE(name, n, ...) \
- LIBC_PROBE_1 (IN_LIB, name, n, ## __VA_ARGS__)
+ LIBC_PROBE_1 (MODULE_NAME, name, n, ## __VA_ARGS__)
# define LIBC_PROBE_1(lib, name, n, ...) \
STAP_PROBE##n (lib, name, ## __VA_ARGS__)
@@ -61,7 +61,7 @@
# define STAP_PROBE0 STAP_PROBE
# define LIBC_PROBE_ASM(name, template) \
- STAP_PROBE_ASM (IN_LIB, name, template)
+ STAP_PROBE_ASM (MODULE_NAME, name, template)
# define LIBC_PROBE_ASM_OPERANDS STAP_PROBE_ASM_OPERANDS