| /** |
| * @file op_abi.cpp |
| * This file contains a simple C interface to the ABI-describing functionality, |
| * the majority of which is implemented in C++. this is the file which is |
| * intended for use in files outside the /libabi directory. |
| * |
| * @remark Copyright 2002 OProfile authors |
| * @remark Read the file COPYING |
| * |
| * @author Graydon Hoare |
| */ |
| |
| #include "op_abi.h" |
| #include "odb.h" |
| #include "op_sample_file.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| #define byte_addr(x) (reinterpret_cast<unsigned char *>(&(x))) |
| #define field_offset(s, f) (byte_addr(s.f) - byte_addr(s)) |
| |
| int op_write_abi_to_file(char const * abi_file) |
| { |
| odb_node_t node; |
| odb_descr_t descr; |
| struct opd_header header; |
| |
| FILE* file = fopen(abi_file, "wt"); |
| |
| fprintf(file, "sizeof_double %u\n", sizeof(double)); |
| |
| fprintf(file, "sizeof_time_t %u\n", sizeof(time_t)); |
| fprintf(file, "sizeof_u8 %u\n", sizeof(u8)); |
| fprintf(file, "sizeof_u32 %u\n", sizeof(u32)); |
| fprintf(file, "sizeof_int %u\n", sizeof(int)); |
| fprintf(file, "sizeof_unsigned_int %u\n", sizeof(unsigned int)); |
| fprintf(file, "sizeof_odb_key_t %u\n", sizeof(odb_key_t)); |
| fprintf(file, "sizeof_odb_index_t %u\n", sizeof(odb_index_t)); |
| fprintf(file, "sizeof_odb_value_t %u\n", sizeof(odb_value_t)); |
| fprintf(file, "sizeof_odb_node_nr_t %u\n", sizeof(odb_node_nr_t)); |
| fprintf(file, "sizeof_odb_descr_t %u\n", sizeof(odb_descr_t)); |
| fprintf(file, "sizeof_odb_node_t %u\n", sizeof(odb_node_t)); |
| fprintf(file, "sizeof_struct_opd_header %u\n", sizeof(struct opd_header)); |
| |
| fprintf(file, "offsetof_node_key %u\n", field_offset(node, key)); |
| fprintf(file, "offsetof_node_value %u\n", field_offset(node, value)); |
| fprintf(file, "offsetof_node_next %u\n", field_offset(node, next)); |
| |
| fprintf(file, "offsetof_descr_size %u\n", field_offset(descr, size)); |
| fprintf(file, "offsetof_descr_current_size %u\n", field_offset(descr, current_size)); |
| |
| fprintf(file, "offsetof_header_magic %u\n", field_offset(header, magic)); |
| fprintf(file, "offsetof_header_version %u\n", field_offset(header, version)); |
| fprintf(file, "offsetof_header_cpu_type %u\n", field_offset(header, cpu_type)); |
| fprintf(file, "offsetof_header_ctr_event %u\n", field_offset(header, ctr_event)); |
| fprintf(file, "offsetof_header_ctr_um %u\n", field_offset(header, ctr_um)); |
| fprintf(file, "offsetof_header_ctr_count %u\n", field_offset(header, ctr_count)); |
| fprintf(file, "offsetof_header_is_kernel %u\n", field_offset(header, is_kernel)); |
| fprintf(file, "offsetof_header_cpu_speed %u\n", field_offset(header, cpu_speed)); |
| fprintf(file, "offsetof_header_mtime %u\n", field_offset(header, mtime)); |
| fprintf(file, "offsetof_header_cg_to_is_kernel %u\n", field_offset(header, cg_to_is_kernel)); |
| fprintf(file, "offsetof_header_anon_start %u\n", field_offset(header, anon_start)); |
| fprintf(file, "offsetof_header_cg_to_anon_start %u\n", field_offset(header, cg_to_anon_start)); |
| |
| // determine endianness |
| |
| unsigned int probe = 0xff; |
| size_t sz = sizeof(unsigned int); |
| unsigned char * probe_byte = reinterpret_cast<unsigned char *>(&probe); |
| |
| assert(probe_byte[0] == 0xff || probe_byte[sz - 1] == 0xff); |
| |
| if (probe_byte[0] == 0xff) |
| fprintf(file, "little_endian 1\n"); |
| else |
| fprintf(file, "little_endian 0\n"); |
| |
| fprintf(file, "\n"); |
| |
| fclose(file); |
| return 1; |
| } |