From 82838bd626b10f1a82b0de29728c26f4458ec514 Mon Sep 17 00:00:00 2001 From: Cary Coutant Date: Thu, 3 Mar 2016 12:09:06 -0800 Subject: Add new plugin hooks to support querying section alignment and size. include/ 2016-03-03 Than McIntosh * plugin-api.h: Add new hooks to the plugin transfer vector to to support querying section alignment and section size. (ld_plugin_get_input_section_alignment): New hook. (ld_plugin_get_input_section_size): New hook. (ld_plugin_tag): Add LDPT_GET_INPUT_SECTION_ALIGNMENT and LDPT_GET_INPUT_SECTION_SIZE. (ld_plugin_tv): Add tv_get_input_section_alignment and tv_get_input_section_size. gold/ 2016-03-03 Than McIntosh * plugin.cc (Plugin::load): Include hooks for get_input_section_size and get_input_section_alignment in transfer vector. (get_input_section_alignment): New function. (get_input_section_size): New function. * testsuite/Makefile.am: Add plugin_layout_with_alignment.sh test. * testsuite/Makefile.in: [Regenerate.] * testsuite/plugin_section_alignment.cc: New test file. * testsuite/plugin_layout_with_alignment.cc: New test file. * testsuite/plugin_layout_with_alignment.sh: New test file. --- include/plugin-api.h | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/plugin-api.h b/include/plugin-api.h index 811e6e4..a794a37 100644 --- a/include/plugin-api.h +++ b/include/plugin-api.h @@ -345,6 +345,26 @@ enum ld_plugin_status const struct ld_plugin_section * section_list, unsigned int num_sections); +/* The linker's interface for retrieving the section alignment requirement + of a specific section in an object. This interface should only be invoked in the + claim_file handler. This function sets *ADDRALIGN to the ELF sh_addralign + value of the input section. */ + +typedef +enum ld_plugin_status +(*ld_plugin_get_input_section_alignment) (const struct ld_plugin_section section, + unsigned int *addralign); + +/* The linker's interface for retrieving the section size of a specific section + in an object. This interface should only be invoked in the claim_file handler. + This function sets *SECSIZE to the ELF sh_size + value of the input section. */ + +typedef +enum ld_plugin_status +(*ld_plugin_get_input_section_size) (const struct ld_plugin_section section, + uint64_t *secsize); + enum ld_plugin_level { LDPL_INFO, @@ -385,7 +405,9 @@ enum ld_plugin_tag LDPT_GET_SYMBOLS_V2 = 25, LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS = 26, LDPT_UNIQUE_SEGMENT_FOR_SECTIONS = 27, - LDPT_GET_SYMBOLS_V3 = 28 + LDPT_GET_SYMBOLS_V3 = 28, + LDPT_GET_INPUT_SECTION_ALIGNMENT = 29, + LDPT_GET_INPUT_SECTION_SIZE = 30 }; /* The plugin transfer vector. */ @@ -417,6 +439,8 @@ struct ld_plugin_tv ld_plugin_allow_section_ordering tv_allow_section_ordering; ld_plugin_allow_unique_segment_for_sections tv_allow_unique_segment_for_sections; ld_plugin_unique_segment_for_sections tv_unique_segment_for_sections; + ld_plugin_get_input_section_alignment tv_get_input_section_alignment; + ld_plugin_get_input_section_size tv_get_input_section_size; } tv_u; }; -- cgit v1.1