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Diffstat (limited to 'contrib/llvm/include/llvm-c/lto.h')
| -rw-r--r-- | contrib/llvm/include/llvm-c/lto.h | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/contrib/llvm/include/llvm-c/lto.h b/contrib/llvm/include/llvm-c/lto.h new file mode 100644 index 0000000..40110fd --- /dev/null +++ b/contrib/llvm/include/llvm-c/lto.h @@ -0,0 +1,309 @@ +/*===-- llvm-c/lto.h - LTO Public C Interface ---------------------*- C -*-===*\ +|* *| +|* The LLVM Compiler Infrastructure *| +|* *| +|* This file is distributed under the University of Illinois Open Source *| +|* License. See LICENSE.TXT for details. *| +|* *| +|*===----------------------------------------------------------------------===*| +|* *| +|* This header provides public interface to an abstract link time optimization*| +|* library. LLVM provides an implementation of this interface for use with *| +|* llvm bitcode files. *| +|* *| +\*===----------------------------------------------------------------------===*/ + +#ifndef LLVM_C_LTO_H +#define LLVM_C_LTO_H + +#include <stdbool.h> +#include <stddef.h> +#include <unistd.h> + +/** + * @defgroup LLVMCLTO LTO + * @ingroup LLVMC + * + * @{ + */ + +#define LTO_API_VERSION 4 + +typedef enum { + LTO_SYMBOL_ALIGNMENT_MASK = 0x0000001F, /* log2 of alignment */ + LTO_SYMBOL_PERMISSIONS_MASK = 0x000000E0, + LTO_SYMBOL_PERMISSIONS_CODE = 0x000000A0, + LTO_SYMBOL_PERMISSIONS_DATA = 0x000000C0, + LTO_SYMBOL_PERMISSIONS_RODATA = 0x00000080, + LTO_SYMBOL_DEFINITION_MASK = 0x00000700, + LTO_SYMBOL_DEFINITION_REGULAR = 0x00000100, + LTO_SYMBOL_DEFINITION_TENTATIVE = 0x00000200, + LTO_SYMBOL_DEFINITION_WEAK = 0x00000300, + LTO_SYMBOL_DEFINITION_UNDEFINED = 0x00000400, + LTO_SYMBOL_DEFINITION_WEAKUNDEF = 0x00000500, + LTO_SYMBOL_SCOPE_MASK = 0x00003800, + LTO_SYMBOL_SCOPE_INTERNAL = 0x00000800, + LTO_SYMBOL_SCOPE_HIDDEN = 0x00001000, + LTO_SYMBOL_SCOPE_PROTECTED = 0x00002000, + LTO_SYMBOL_SCOPE_DEFAULT = 0x00001800, + LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN = 0x00002800 +} lto_symbol_attributes; + +typedef enum { + LTO_DEBUG_MODEL_NONE = 0, + LTO_DEBUG_MODEL_DWARF = 1 +} lto_debug_model; + +typedef enum { + LTO_CODEGEN_PIC_MODEL_STATIC = 0, + LTO_CODEGEN_PIC_MODEL_DYNAMIC = 1, + LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC = 2 +} lto_codegen_model; + + +/** opaque reference to a loaded object module */ +typedef struct LTOModule* lto_module_t; + +/** opaque reference to a code generator */ +typedef struct LTOCodeGenerator* lto_code_gen_t; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Returns a printable string. + */ +extern const char* +lto_get_version(void); + + +/** + * Returns the last error string or NULL if last operation was successful. + */ +extern const char* +lto_get_error_message(void); + +/** + * Checks if a file is a loadable object file. + */ +extern bool +lto_module_is_object_file(const char* path); + + +/** + * Checks if a file is a loadable object compiled for requested target. + */ +extern bool +lto_module_is_object_file_for_target(const char* path, + const char* target_triple_prefix); + + +/** + * Checks if a buffer is a loadable object file. + */ +extern bool +lto_module_is_object_file_in_memory(const void* mem, size_t length); + + +/** + * Checks if a buffer is a loadable object compiled for requested target. + */ +extern bool +lto_module_is_object_file_in_memory_for_target(const void* mem, size_t length, + const char* target_triple_prefix); + + +/** + * Loads an object file from disk. + * Returns NULL on error (check lto_get_error_message() for details). + */ +extern lto_module_t +lto_module_create(const char* path); + + +/** + * Loads an object file from memory. + * Returns NULL on error (check lto_get_error_message() for details). + */ +extern lto_module_t +lto_module_create_from_memory(const void* mem, size_t length); + +/** + * Loads an object file from disk. The seek point of fd is not preserved. + * Returns NULL on error (check lto_get_error_message() for details). + */ +extern lto_module_t +lto_module_create_from_fd(int fd, const char *path, size_t file_size); + +/** + * Loads an object file from disk. The seek point of fd is not preserved. + * Returns NULL on error (check lto_get_error_message() for details). + */ +extern lto_module_t +lto_module_create_from_fd_at_offset(int fd, const char *path, size_t file_size, + size_t map_size, off_t offset); + + +/** + * Frees all memory internally allocated by the module. + * Upon return the lto_module_t is no longer valid. + */ +extern void +lto_module_dispose(lto_module_t mod); + + +/** + * Returns triple string which the object module was compiled under. + */ +extern const char* +lto_module_get_target_triple(lto_module_t mod); + +/** + * Sets triple string with which the object will be codegened. + */ +extern void +lto_module_set_target_triple(lto_module_t mod, const char *triple); + + +/** + * Returns the number of symbols in the object module. + */ +extern unsigned int +lto_module_get_num_symbols(lto_module_t mod); + + +/** + * Returns the name of the ith symbol in the object module. + */ +extern const char* +lto_module_get_symbol_name(lto_module_t mod, unsigned int index); + + +/** + * Returns the attributes of the ith symbol in the object module. + */ +extern lto_symbol_attributes +lto_module_get_symbol_attribute(lto_module_t mod, unsigned int index); + + +/** + * Instantiates a code generator. + * Returns NULL on error (check lto_get_error_message() for details). + */ +extern lto_code_gen_t +lto_codegen_create(void); + + +/** + * Frees all code generator and all memory it internally allocated. + * Upon return the lto_code_gen_t is no longer valid. + */ +extern void +lto_codegen_dispose(lto_code_gen_t); + + + +/** + * Add an object module to the set of modules for which code will be generated. + * Returns true on error (check lto_get_error_message() for details). + */ +extern bool +lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod); + + + +/** + * Sets if debug info should be generated. + * Returns true on error (check lto_get_error_message() for details). + */ +extern bool +lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model); + + +/** + * Sets which PIC code model to generated. + * Returns true on error (check lto_get_error_message() for details). + */ +extern bool +lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model); + + +/** + * Sets the cpu to generate code for. + */ +extern void +lto_codegen_set_cpu(lto_code_gen_t cg, const char *cpu); + + +/** + * Sets the location of the assembler tool to run. If not set, libLTO + * will use gcc to invoke the assembler. + */ +extern void +lto_codegen_set_assembler_path(lto_code_gen_t cg, const char* path); + +/** + * Sets extra arguments that libLTO should pass to the assembler. + */ +extern void +lto_codegen_set_assembler_args(lto_code_gen_t cg, const char **args, + int nargs); + +/** + * Adds to a list of all global symbols that must exist in the final + * generated code. If a function is not listed, it might be + * inlined into every usage and optimized away. + */ +extern void +lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, const char* symbol); + +/** + * Writes a new object file at the specified path that contains the + * merged contents of all modules added so far. + * Returns true on error (check lto_get_error_message() for details). + */ +extern bool +lto_codegen_write_merged_modules(lto_code_gen_t cg, const char* path); + +/** + * Generates code for all added modules into one native object file. + * On success returns a pointer to a generated mach-o/ELF buffer and + * length set to the buffer size. The buffer is owned by the + * lto_code_gen_t and will be freed when lto_codegen_dispose() + * is called, or lto_codegen_compile() is called again. + * On failure, returns NULL (check lto_get_error_message() for details). + */ +extern const void* +lto_codegen_compile(lto_code_gen_t cg, size_t* length); + +/** + * Generates code for all added modules into one native object file. + * The name of the file is written to name. Returns true on error. + */ +extern bool +lto_codegen_compile_to_file(lto_code_gen_t cg, const char** name); + + +/** + * Sets options to help debug codegen bugs. + */ +extern void +lto_codegen_debug_options(lto_code_gen_t cg, const char *); + +/** + * Initializes LLVM disassemblers. + * FIXME: This doesn't really belong here. + */ +extern void +lto_initialize_disassembler(void); + +#ifdef __cplusplus +} +#endif + +/** + * @} + */ + +#endif |
