X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=include%2Fplugin-api.h;h=e317d784785b409dff3ffb5c3193cb315e67b465;hb=9e790a80160676e7fd3fb8be6cf3c1c77d9ded81;hp=d7f9ee336aa0f2952ac11129d2c3f4a23544bd3e;hpb=6f2750feaf2827ef8a1a0a5b2f90c1e9a6cabbd1;p=deliverable%2Fbinutils-gdb.git diff --git a/include/plugin-api.h b/include/plugin-api.h index d7f9ee336a..e317d78478 100644 --- a/include/plugin-api.h +++ b/include/plugin-api.h @@ -1,6 +1,6 @@ /* plugin-api.h -- External linker plugin API. */ -/* Copyright (C) 2009-2016 Free Software Foundation, Inc. +/* Copyright (C) 2009-2020 Free Software Foundation, Inc. Written by Cary Coutant . This file is part of binutils. @@ -34,7 +34,61 @@ #include #if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && \ !defined(UINT64_MAX) && !defined(uint64_t) -#error can not find uint64_t type +#error cannot find uint64_t type +#endif + +/* Detect endianess based on __BYTE_ORDER__ macro. */ +#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ + defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_PDP_ENDIAN__) +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ +#define PLUGIN_LITTLE_ENDIAN 1 +#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define PLUGIN_BIG_ENDIAN 1 +#elif __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__ +#define PLUGIN_PDP_ENDIAN 1 +#endif +#else +/* Older GCC releases (<4.6.0) can make detection from glibc macros. */ +#if defined(__GLIBC__) || defined(__GNU_LIBRARY__) || defined(__ANDROID__) +#include +#ifdef __BYTE_ORDER +#if __BYTE_ORDER == __LITTLE_ENDIAN +#define PLUGIN_LITTLE_ENDIAN 1 +#elif __BYTE_ORDER == __BIG_ENDIAN +#define PLUGIN_BIG_ENDIAN 1 +#endif +#endif +#endif +/* Include all necessary header files based on target. */ +#if defined(__SVR4) && defined(__sun) +#include +#endif +#if defined(__FreeBSD__) || defined(__NetBSD__) || \ + defined(__DragonFly__) || defined(__minix) +#include +#endif +#if defined(__OpenBSD__) +#include +#endif +/* Detect endianess based on _BYTE_ORDER. */ +#ifdef _BYTE_ORDER +#if _BYTE_ORDER == _LITTLE_ENDIAN +#define PLUGIN_LITTLE_ENDIAN 1 +#elif _BYTE_ORDER == _BIG_ENDIAN +#define PLUGIN_BIG_ENDIAN 1 +#endif +#endif +/* Detect based on _WIN32. */ +#if defined(_WIN32) +#define PLUGIN_LITTLE_ENDIAN 1 +#endif +/* Detect based on __BIG_ENDIAN__ and __LITTLE_ENDIAN__ */ +#ifdef __LITTLE_ENDIAN__ +#define PLUGIN_LITTLE_ENDIAN 1 +#endif +#ifdef __BIG_ENDIAN__ +#define PLUGIN_BIG_ENDIAN 1 +#endif #endif #ifdef __cplusplus @@ -87,7 +141,26 @@ struct ld_plugin_symbol { char *name; char *version; - int def; + /* This is for compatibility with older ABIs. The older ABI defined + only 'def' field. */ +#if PLUGIN_BIG_ENDIAN == 1 + char unused; + char section_kind; + char symbol_type; + char def; +#elif PLUGIN_LITTLE_ENDIAN == 1 + char def; + char symbol_type; + char section_kind; + char unused; +#elif PLUGIN_PDP_ENDIAN == 1 + char symbol_type; + char def; + char unused; + char section_kind; +#else +#error "Could not detect architecture endianess" +#endif int visibility; uint64_t size; char *comdat_key; @@ -123,6 +196,21 @@ enum ld_plugin_symbol_visibility LDPV_HIDDEN }; +/* The type of the symbol. */ + +enum ld_plugin_symbol_type +{ + LDST_UNKNOWN, + LDST_FUNCTION, + LDST_VARIABLE +}; + +enum ld_plugin_symbol_section_kind +{ + LDSSK_DEFAULT, + LDSSK_BSS +}; + /* How a symbol is resolved. */ enum ld_plugin_symbol_resolution @@ -345,6 +433,48 @@ 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); + +typedef +enum ld_plugin_status +(*ld_plugin_new_input_handler) (const struct ld_plugin_input_file *file); + +/* The linker's interface for registering the "new_input" handler. This handler + will be notified when a new input file has been added after the + all_symbols_read event, allowing the plugin to, for example, set a unique + segment for sections in plugin-generated input files. */ + +typedef +enum ld_plugin_status +(*ld_plugin_register_new_input) (ld_plugin_new_input_handler handler); + +/* The linker's interface for getting the list of wrapped symbols using the + --wrap option. This sets *NUM_SYMBOLS to number of wrapped symbols and + *WRAP_SYMBOL_LIST to the list of wrapped symbols. */ + +typedef +enum ld_plugin_status +(*ld_plugin_get_wrap_symbols) (uint64_t *num_symbols, + const char ***wrap_symbol_list); + enum ld_plugin_level { LDPL_INFO, @@ -384,7 +514,13 @@ enum ld_plugin_tag LDPT_ALLOW_SECTION_ORDERING = 24, LDPT_GET_SYMBOLS_V2 = 25, LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS = 26, - LDPT_UNIQUE_SEGMENT_FOR_SECTIONS = 27 + LDPT_UNIQUE_SEGMENT_FOR_SECTIONS = 27, + LDPT_GET_SYMBOLS_V3 = 28, + LDPT_GET_INPUT_SECTION_ALIGNMENT = 29, + LDPT_GET_INPUT_SECTION_SIZE = 30, + LDPT_REGISTER_NEW_INPUT_HOOK = 31, + LDPT_GET_WRAP_SYMBOLS = 32, + LDPT_ADD_SYMBOLS_V2 = 33 }; /* The plugin transfer vector. */ @@ -416,6 +552,10 @@ 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; + ld_plugin_register_new_input tv_register_new_input; + ld_plugin_get_wrap_symbols tv_get_wrap_symbols; } tv_u; };