The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 1 | /** |
| 2 | * @file op_abi.c |
| 3 | * This file contains a simple C interface to the ABI-describing functionality, |
| 4 | * the majority of which is implemented in C++. This is the file which is |
| 5 | * intended for use in files outside the /libabi directory. |
| 6 | * |
| 7 | * @remark Copyright 2002, 2005 OProfile authors |
| 8 | * @remark Read the file COPYING |
| 9 | * |
| 10 | * @author Graydon Hoare |
| 11 | * @author Philippe Elie |
| 12 | */ |
| 13 | |
| 14 | #include "op_abi.h" |
| 15 | #include "odb.h" |
| 16 | #include "op_sample_file.h" |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <stddef.h> |
| 20 | #include <assert.h> |
| 21 | |
| 22 | static struct op_abi_entry const abi_entries[] = { |
| 23 | { "sizeof_double", sizeof(double) }, |
| 24 | { "sizeof_time_t", sizeof(time_t) }, |
| 25 | { "sizeof_u8", sizeof(u8) }, |
| 26 | { "sizeof_u32", sizeof(u32) }, |
| 27 | { "sizeof_int", sizeof(int) }, |
| 28 | { "sizeof_unsigned_int", sizeof(unsigned int) }, |
| 29 | { "sizeof_odb_key_t", sizeof(odb_key_t) }, |
| 30 | { "sizeof_odb_index_t", sizeof(odb_index_t) }, |
| 31 | { "sizeof_odb_value_t", sizeof(odb_value_t) }, |
| 32 | { "sizeof_odb_node_nr_t", sizeof(odb_node_nr_t) }, |
| 33 | { "sizeof_odb_descr_t", sizeof(odb_descr_t) }, |
| 34 | { "sizeof_odb_node_t", sizeof(odb_node_t) }, |
| 35 | { "sizeof_struct_opd_header", sizeof(struct opd_header) }, |
| 36 | |
| 37 | { "offsetof_node_key", offsetof(odb_node_t, key) }, |
| 38 | { "offsetof_node_value", offsetof(odb_node_t, value) }, |
| 39 | { "offsetof_node_next", offsetof(odb_node_t, next) }, |
| 40 | |
| 41 | { "offsetof_descr_size", offsetof(odb_descr_t, size) }, |
| 42 | { "offsetof_descr_current_size", offsetof(odb_descr_t, current_size) }, |
| 43 | |
| 44 | { "offsetof_header_magic", offsetof(struct opd_header, magic) }, |
| 45 | { "offsetof_header_version", offsetof(struct opd_header, version) }, |
| 46 | { "offsetof_header_cpu_type", offsetof(struct opd_header, cpu_type) }, |
| 47 | { "offsetof_header_ctr_event", offsetof(struct opd_header, ctr_event) }, |
| 48 | { "offsetof_header_ctr_um", offsetof(struct opd_header, ctr_um) }, |
| 49 | { "offsetof_header_ctr_count", offsetof(struct opd_header, ctr_count) }, |
| 50 | { "offsetof_header_is_kernel", offsetof(struct opd_header, is_kernel) }, |
| 51 | { "offsetof_header_cpu_speed", offsetof(struct opd_header, cpu_speed) }, |
| 52 | { "offsetof_header_mtime", offsetof(struct opd_header, mtime) }, |
| 53 | { "offsetof_header_cg_to_is_kernel", offsetof(struct opd_header, cg_to_is_kernel), }, |
| 54 | { "offsetof_header_anon_start", offsetof(struct opd_header, anon_start) }, |
| 55 | { "offsetof_header_cg_to_anon_start", offsetof(struct opd_header, cg_to_anon_start) }, |
| 56 | |
| 57 | { NULL, 0 }, |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | struct op_abi_entry const * get_abi(void) |
| 62 | { |
| 63 | return abi_entries; |
| 64 | } |
| 65 | |
| 66 | |
| 67 | int op_little_endian(void) |
| 68 | { |
| 69 | unsigned int probe = 0xff; |
| 70 | size_t sz = sizeof(unsigned int); |
| 71 | unsigned char * probe_byte = (unsigned char *)&probe; |
| 72 | |
| 73 | assert(probe_byte[0] == 0xff || probe_byte[sz - 1] == 0xff); |
| 74 | |
| 75 | return probe_byte[0] == 0xff; |
| 76 | } |
| 77 | |
| 78 | |
| 79 | int op_write_abi_to_file(char const * abi_file) |
| 80 | { |
| 81 | FILE * fp; |
| 82 | struct op_abi_entry const * abi_entry; |
| 83 | |
| 84 | if ((fp = fopen(abi_file, "w")) == NULL) |
| 85 | return 0; |
| 86 | |
| 87 | for (abi_entry = get_abi() ; abi_entry->name != NULL; ++abi_entry) |
| 88 | fprintf(fp, "%s %u\n", abi_entry->name, abi_entry->offset); |
| 89 | fprintf(fp, "little_endian %d\n", op_little_endian()); |
| 90 | |
| 91 | fclose(fp); |
| 92 | |
| 93 | return 1; |
| 94 | } |