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Again we have to fix librtkaio to use MODULE_NAME definitions to
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work around the changes we are making and preserve ABI/API.
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commit 279bc5b3c384c09746fbadb2b68c6db9e833c064
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Author: Siddhesh Poyarekar <siddhesh@redhat.com>
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Date: Thu Nov 20 11:42:00 2014 +0530
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Use MODULE_NAME in stap-probe instead of IN_LIB
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Define MODULE_NAME in the build command and define IN_MODULE using
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MODULE_NAME. Verified that the generated code is unchanged on x86_64.
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* Makeconfig (module-cppflags-real): Define MODULE_NAME
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instead of IN_MODULE.
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* include/libc-symbols.h (IN_MODULE): Define using
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MODULE_NAME.
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(PASTE_NAME, PASTE_NAME1): New macros.
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* include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead
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of IN_LIB.
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(STAP_PROBE_ASM): Likewise.
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Index: glibc-2.17-c758a686/Makeconfig
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===================================================================
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--- glibc-2.17-c758a686.orig/Makeconfig
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+++ glibc-2.17-c758a686/Makeconfig
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@@ -741,7 +741,7 @@ in-module = $(subst -,_,$(firstword $(li
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libc))
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module-cppflags-real = -include $(common-objpfx)libc-modules.h \
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- -DIN_MODULE=MODULE_$(in-module)
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+ -DMODULE_NAME=$(in-module)
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# We don't need libc-modules.h and the MODULE_NAME definition for .v.i
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# files. These targets don't (and will likely never need to) use the IS_IN
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@@ -940,7 +940,7 @@ postclean-generated += soversions.mk sov
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before-compile += $(common-objpfx)libc-modules.h
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ifeq ($(soversions.mk-done),t)
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# Generate a header with macro definitions for use with the IS_IN macro.
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-# These are the possible values for the IN_MODULE macro defined when building
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+# These are the possible values for the MODULE_NAME macro defined when building
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# sources, to identify which module the translation unit is going to be built
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# into.
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$(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
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Index: glibc-2.17-c758a686/include/libc-symbols.h
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===================================================================
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--- glibc-2.17-c758a686.orig/include/libc-symbols.h
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+++ glibc-2.17-c758a686/include/libc-symbols.h
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@@ -20,8 +20,12 @@
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#ifndef _LIBC_SYMBOLS_H
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#define _LIBC_SYMBOLS_H 1
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+#define IN_MODULE PASTE_NAME (MODULE_, MODULE_NAME)
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#define IS_IN(lib) (IN_MODULE == MODULE_##lib)
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+#define PASTE_NAME(a,b) PASTE_NAME1 (a,b)
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+#define PASTE_NAME1(a,b) a##b
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+
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/* This file's macros are included implicitly in the compilation of every
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file in the C library by -imacros.
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Index: glibc-2.17-c758a686/include/stap-probe.h
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===================================================================
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--- glibc-2.17-c758a686.orig/include/stap-probe.h
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+++ glibc-2.17-c758a686/include/stap-probe.h
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@@ -30,7 +30,7 @@
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Systemtap's header defines the macros STAP_PROBE (provider, name) and
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STAP_PROBEn (provider, name, arg1, ..., argn). For "provider" we paste
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- in the IN_LIB name (libc, libpthread, etc.) automagically. */
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+ in MODULE_NAME (libc, libpthread, etc.) automagically. */
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# ifndef NOT_IN_libc
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# define IN_LIB libc
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@@ -45,7 +45,7 @@
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# endif
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# define LIBC_PROBE(name, n, ...) \
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- LIBC_PROBE_1 (IN_LIB, name, n, ## __VA_ARGS__)
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+ LIBC_PROBE_1 (MODULE_NAME, name, n, ## __VA_ARGS__)
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# define LIBC_PROBE_1(lib, name, n, ...) \
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STAP_PROBE##n (lib, name, ## __VA_ARGS__)
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@@ -53,7 +53,7 @@
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# define STAP_PROBE0 STAP_PROBE
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# define LIBC_PROBE_ASM(name, template) \
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- STAP_PROBE_ASM (IN_LIB, name, template)
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+ STAP_PROBE_ASM (MODULE_NAME, name, template)
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# define LIBC_PROBE_ASM_OPERANDS STAP_PROBE_ASM_OPERANDS
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Index: glibc-2.17-c758a686/rtkaio/Makefile
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===================================================================
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--- glibc-2.17-c758a686.orig/rtkaio/Makefile
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+++ glibc-2.17-c758a686/rtkaio/Makefile
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@@ -70,7 +70,9 @@ CFLAGS-kaio_librt-cancellation.c = -fasy
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LDFLAGS-rtkaio.so = -Wl,-soname=lib$(libprefix)rt.so$(librt.so-version) \
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-Wl,--enable-new-dtags,-z,nodelete
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CPPFLAGS-librtkaio += -UIN_MODULE -DIN_MODULE=MODULE_librt \
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- -UIS_IN_librt -DIS_IN_librt=1 -I$(..)rt
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+ -UMODULE_NAME -DMODULE_NAME=librt \
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+ -UIS_IN_librt -DIS_IN_librt=1 \
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+ -I$(..)rt
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rpath-dirs := $(patsubst rt,rtkaio,$(rpath-dirs))
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