#ifndef LLVM_C_LTO_H
#define LLVM_C_LTO_H
-#include <stdbool.h>
#include <stddef.h>
-#include <unistd.h>
+#include <sys/types.h>
+
+#ifndef __cplusplus
+#if !defined(_MSC_VER)
+#include <stdbool.h>
+typedef bool lto_bool_t;
+#else
+/* MSVC in particular does not have anything like _Bool or bool in C, but we can
+ at least make sure the type is the same size. The implementation side will
+ use C++ bool. */
+typedef unsigned char lto_bool_t;
+#endif
+#else
+typedef bool lto_bool_t;
+#endif
/**
* @defgroup LLVMCLTO LTO
* @{
*/
-#define LTO_API_VERSION 5
+#define LTO_API_VERSION 8
+/**
+ * \since prior to LTO_API_VERSION=3
+ */
typedef enum {
LTO_SYMBOL_ALIGNMENT_MASK = 0x0000001F, /* log2 of alignment */
LTO_SYMBOL_PERMISSIONS_MASK = 0x000000E0,
LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN = 0x00002800
} lto_symbol_attributes;
+/**
+ * \since prior to LTO_API_VERSION=3
+ */
typedef enum {
LTO_DEBUG_MODEL_NONE = 0,
LTO_DEBUG_MODEL_DWARF = 1
} lto_debug_model;
+/**
+ * \since prior to LTO_API_VERSION=3
+ */
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;
+/**
+ * \since LTO_API_VERSION=6
+ */
+typedef enum {
+ LTO_INTERNALIZE_FULL = 0,
+ LTO_INTERNALIZE_NONE = 1,
+ LTO_INTERNALIZE_HIDDEN = 2
+} lto_internalize_strategy;
/** opaque reference to a loaded object module */
typedef struct LTOModule* lto_module_t;
/**
* Returns a printable string.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern const char*
lto_get_version(void);
/**
* Returns the last error string or NULL if last operation was successful.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern const char*
lto_get_error_message(void);
/**
* Checks if a file is a loadable object file.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
lto_module_is_object_file(const char* path);
/**
* Checks if a file is a loadable object compiled for requested target.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
lto_module_is_object_file_for_target(const char* path,
const char* target_triple_prefix);
/**
* Checks if a buffer is a loadable object file.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
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.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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).
+ *
+ * \since LTO_API_VERSION=5
*/
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).
+ *
+ * \since LTO_API_VERSION=5
*/
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.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern void
lto_module_dispose(lto_module_t mod);
-
/**
* Returns triple string which the object module was compiled under.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern const char*
lto_module_get_target_triple(lto_module_t mod);
/**
* Sets triple string with which the object will be codegened.
+ *
+ * \since LTO_API_VERSION=4
*/
extern void
lto_module_set_target_triple(lto_module_t mod, const char *triple);
/**
* Returns the number of symbols in the object module.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern unsigned int
lto_module_get_num_symbols(lto_module_t mod);
/**
* Returns the name of the ith symbol in the object module.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern lto_symbol_attributes
lto_module_get_symbol_attribute(lto_module_t mod, unsigned int index);
+/**
+ * Returns the number of dependent libraries in the object module.
+ *
+ * \since LTO_API_VERSION=8
+ */
+extern unsigned int
+lto_module_get_num_deplibs(lto_module_t mod);
+
+
+/**
+ * Returns the ith dependent library in the module.
+ *
+ * \since LTO_API_VERSION=8
+ */
+extern const char*
+lto_module_get_deplib(lto_module_t mod, unsigned int index);
+
+
+/**
+ * Returns the number of linker options in the object module.
+ *
+ * \since LTO_API_VERSION=8
+ */
+extern unsigned int
+lto_module_get_num_linkeropts(lto_module_t mod);
+
+
+/**
+ * Returns the ith linker option in the module.
+ *
+ * \since LTO_API_VERSION=8
+ */
+extern const char*
+lto_module_get_linkeropt(lto_module_t mod, unsigned int index);
+
+
+/**
+ * Diagnostic severity.
+ *
+ * \since LTO_API_VERSION=7
+ */
+typedef enum {
+ LTO_DS_ERROR,
+ LTO_DS_WARNING,
+ LTO_DS_NOTE
+} lto_codegen_diagnostic_severity_t;
+
+/**
+ * Diagnostic handler type.
+ * \p severity defines the severity.
+ * \p diag is the actual diagnostic.
+ * The diagnostic is not prefixed by any of severity keyword, e.g., 'error: '.
+ * \p ctxt is used to pass the context set with the diagnostic handler.
+ *
+ * \since LTO_API_VERSION=7
+ */
+typedef void (*lto_diagnostic_handler_t)(
+ lto_codegen_diagnostic_severity_t severity, const char *diag, void *ctxt);
+
+/**
+ * Set a diagnostic handler and the related context (void *).
+ * This is more general than lto_get_error_message, as the diagnostic handler
+ * can be called at anytime within lto.
+ *
+ * \since LTO_API_VERSION=7
+ */
+extern void lto_codegen_set_diagnostic_handler(lto_code_gen_t,
+ lto_diagnostic_handler_t,
+ void *);
+
/**
* Instantiates a code generator.
* Returns NULL on error (check lto_get_error_message() for details).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
-extern bool
+extern lto_bool_t
lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model);
/**
* Sets the cpu to generate code for.
+ *
+ * \since LTO_API_VERSION=4
*/
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.
+ *
+ * \since LTO_API_VERSION=3
*/
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.
+ *
+ * \since LTO_API_VERSION=4
*/
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.
+ * Sets the strategy to use during internalize. Default strategy is
+ * LTO_INTERNALIZE_FULL.
+ *
+ * \since LTO_API_VERSION=6
+ */
+extern void
+lto_codegen_set_internalize_strategy(lto_code_gen_t cg,
+ lto_internalize_strategy);
+
+/**
+ * Tells LTO optimization passes that this symbol must be preserved
+ * because it is referenced by native code or a command line option.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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).
+ *
+ * \since LTO_API_VERSION=5
*/
-extern bool
+extern lto_bool_t
lto_codegen_write_merged_modules(lto_code_gen_t cg, const char* path);
/**
* 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).
+ *
+ * \since prior to LTO_API_VERSION=3
*/
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.
+ *
+ * \since LTO_API_VERSION=5
*/
-extern bool
+extern lto_bool_t
lto_codegen_compile_to_file(lto_code_gen_t cg, const char** name);
-struct NativeObjectFile {
- const void *content;
- size_t length;
-};
-
-/**
- * Generates code for merged module into an array of native object files.
- * On success returns a pointer to an array of NativeObjectFile. The
- * count parameter returns the number of elements in the array. Each
- * element is a pointer/length for a generated mach-o/ELF buffer. 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 struct NativeObjectFile*
-lto_codegen_compile_parallel(lto_code_gen_t cg, size_t *count);
/**
* Sets options to help debug codegen bugs.
+ *
+ * \since prior to LTO_API_VERSION=3
*/
extern void
lto_codegen_debug_options(lto_code_gen_t cg, const char *);
/**
* Initializes LLVM disassemblers.
* FIXME: This doesn't really belong here.
+ *
+ * \since LTO_API_VERSION=5
*/
extern void
lto_initialize_disassembler(void);
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