[PATCH] Gold: Add a target hook to allow overriding output section name.

[=?big5?b?RG91ZyBLd2FuICjD9q62vHcp?= <dougkwan at google dot com>]

Hi,

    This patch adds a hook allowing a target to override the output
section name used by Layout::choose_output_section().  Without this
hook, all input sections with names of the form foo.bar will go to
output section foo.   That does not work for ARM,  which has special
output sections like .ARM.attributes and .ARM.exidx.  The patch was
tested by linking a test program for arm-eabi and checking that
.ARM.attributes was present.  In addition, I also ran the gold
test-suite on the host.

-Doug

2009-06-03  Doug Kwan  <dougkwan@google.com>

        * arm.cc (utils::sign_extend): Reverse test in gold_assert.
        (utils::has_overflow): Same.
        (class Target_arm): Declare new method do_output_section_name.
        (Target_arm::arm_info): Add initializer for has_output_section_name.
        (Target_arm::do_output_section_name) Define new.
        * layout.cc (Layout::choose_output_section): Call
        target's output_section_name first if target has one.
        * i386.cc (Target_i386::i386_info) Add initializer for
        has_output_section_name.
        * powerpc.cc (Target_powerpc::powerpc_info): Same.
        * sparc.cc (Target_sparc::sparc_info): Same.
        * x86_64.cc (Target_x86_64::x86_64_info): Same.
        * testsuite/testfile.cc (Target_test::test_target_info): Same.
        * target.h (class Target): Define new methods has_output_section_name,
        output_section_name and do_output_section_name.
        (struct Target::Target_info): Add new field has_output_section_name.

Attachment: patch.txt
Description: Text document