genode/repos/base-linux/mk/spec/linux.mk

#
# Specifics for the Linux-specific Genode components
#

#
# Startup code to be used when building a program and linker script that is
# specific for Linux. We also reserve the stack area via a segment in
# the program under Linux to prevent clashes with vdso.
#
ifneq ($(USE_HOST_LD_SCRIPT),yes)
LD_TEXT_ADDR     ?= 0x01000000
LD_SCRIPT_STATIC  = $(call select_from_repositories,src/ld/genode.ld) \
                    $(call select_from_repositories,src/ld/stack_area.nostdlib.ld)
else
LD_SCRIPT_STATIC ?=
endif

ifneq ($(filter hardening_tool_chain, $(SPECS)),)
CC_OPT += -fPIC
endif
Imported Genode release 11.11 2011-12-22 15:19:25 +00:00			`#`
			`# Specifics for the Linux-specific Genode components`
			`#`

			`#`
			`# Startup code to be used when building a program and linker script that is`
base: hide internals of the Thread API This patch moves details about the stack allocation and organization the base-internal headers. Thereby, I replaced the notion of "thread contexts" by "stacks" as this term is much more intuitive. The fact that we place thread-specific information at the bottom of the stack is not worth introducing new terminology. Issue #1832 2016-01-23 13:42:55 +00:00			`# specific for Linux. We also reserve the stack area via a segment in`
Imported Genode release 11.11 2011-12-22 15:19:25 +00:00			`# the program under Linux to prevent clashes with vdso.`
			`#`
			`ifneq ($(USE_HOST_LD_SCRIPT),yes)`
			`LD_TEXT_ADDR ?= 0x01000000`
Introduce 'spec' subdirectories to outline aspects Instead of holding SPEC-variable dependent files and directories inline within the repository structure, move them into 'spec' subdirectories at the corresponding levels, e.g.: repos/base/include/spec repos/base/mk/spec repos/base/lib/mk/spec repos/base/src/core/spec ... Moreover, this commit removes the 'platform' directories. That term was used in an overloaded sense. All SPEC-relative 'platform' directories are now named 'spec'. Other files, like for instance those related to the kernel/architecture specific startup library, where moved from 'platform' directories to explicit, more meaningful places like e.g.: 'src/lib/startup'. Fix #1673 2015-09-03 12:55:05 +00:00			`LD_SCRIPT_STATIC = $(call select_from_repositories,src/ld/genode.ld) \`
base: hide internals of the Thread API This patch moves details about the stack allocation and organization the base-internal headers. Thereby, I replaced the notion of "thread contexts" by "stacks" as this term is much more intuitive. The fact that we place thread-specific information at the bottom of the stack is not worth introducing new terminology. Issue #1832 2016-01-23 13:42:55 +00:00			`$(call select_from_repositories,src/ld/stack_area.nostdlib.ld)`
Imported Genode release 11.11 2011-12-22 15:19:25 +00:00			`else`
lx_hybrid: reserve thread context area for core core does not use POSIX threads when built for the 'lx_hybrid_x86' platform, so we need to reserve the thread-context area via a segment in the program to prevent clashes with vdso and shared libraries. Fixes #639. 2013-02-03 01:43:31 +00:00			`LD_SCRIPT_STATIC ?=`
Imported Genode release 11.11 2011-12-22 15:19:25 +00:00			`endif`
Hardening compilation support for 64bit Linux Without this patch the compilation failed with: /usr/bin/ld: main.o: relocation R_X86_64_32S against `vtable for Genode::Dataspace' can not be used when making a shared object; recompile with -fPIC main.o: could not read symbols: Bad value collect2: ld returned 1 exit status make[6]: *** [init] Error 1 For this patch the use of the hardening tool chain must be indicated using the "hardening_tool_chain" SPECS entry within the file <build>/etc/specs.conf Fixes #79 2012-06-19 09:05:16 +00:00
			`ifneq ($(filter hardening_tool_chain, $(SPECS)),)`
			`CC_OPT += -fPIC`
			`endif`