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arithmetic_tests.c
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/*
* Copyright (C) 2017 - This file is part of libecc project
*
* Authors:
* Ryad BENADJILA <[email protected]>
* Arnaud EBALARD <[email protected]>
* Jean-Pierre FLORI <[email protected]>
*
* Contributors:
* Nicolas VIVET <[email protected]>
* Karim KHALFALLAH <[email protected]>
*
* This software is licensed under a dual BSD and GPL v2 license.
* See LICENSE file at the root folder of the project.
*/
#include "libarith.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#ifdef WITH_ASSERT_BACKTRACE
#include <signal.h>
#include <execinfo.h>
#define BACKTRACE_SIZE 4096
static unsigned int backtrace_buffer_ptr = 0;
static char backtrace_buffer[BACKTRACE_SIZE];
/* assert trapping and backtracing */
static void assert_signal_handler(int sig)
{
if (sig != SIGINT) {
raise(sig);
}
/* Print the recorded backtrace */
printf("**** BACKTRACE *****\n");
printf("(from old to most recent calls)\n");
printf("%s", backtrace_buffer);
exit(-1);
}
#define ADD_TO_BACKTRACE(...) do {\
int written_size;\
written_size = snprintf(backtrace_buffer + backtrace_buffer_ptr, BACKTRACE_SIZE - 1 - backtrace_buffer_ptr, __VA_ARGS__);\
backtrace_buffer_ptr += written_size;\
if(backtrace_buffer_ptr >= BACKTRACE_SIZE - 1){\
memset(backtrace_buffer, 0, sizeof(backtrace_buffer)-1);\
backtrace_buffer_ptr = 0;\
}\
} while(0)
#else
#define ADD_TO_BACKTRACE(...) do {\
} while(0)
#endif
/*
* Import integer number (found in hexadecimal form in hbuf buffer
* of length hbuflen) into already allocated out_nn. hbuflen is
* expected to be of even size. out_nn parameter is expected to
* have a large enough storage space (i.e. hbuflen / 2) to hold
* imported number.
*/
static int nn_import_from_hexbuf(nn_t out_nn, const char *hbuf, u32 hbuflen)
{
char buf[WORD_BYTES * 2 + 1];
const char *start;
u32 wlen;
u32 k;
int ret;
ret = nn_check_initialized(out_nn); EG(ret, err);
MUST_HAVE((hbuf != NULL), ret, err);
MUST_HAVE(((hbuflen / 2) / WORD_BYTES) == out_nn->wlen, ret, err);
wlen = (hbuflen + WORD_BYTES - 1) / (2 * WORD_BYTES);
for (k = wlen; k > 0; k--) {
/*
* Copy current hex encoded word into null terminated
* scratch buffer
*/
memset(buf, 0, WORD_BYTES * 2 + 1);
start = hbuf + ((k - 1) * WORD_BYTES * 2);
memcpy(buf, start, WORD_BYTES * 2);
/* Let strtoull() convert the value for us */
out_nn->val[wlen - k] = strtoull(buf, NULL, 16);
}
for (k = NN_MAX_WORD_LEN; k > wlen; k--) {
out_nn->val[k - 1] = 0;
}
err:
return ret;
}
#define DISPATCH_TABLE_MAGIC "FEEDBABE"
struct dispatch_table {
const char magic[sizeof(DISPATCH_TABLE_MAGIC)];
const char *op_string;
const char *op_string_helper;
int (*fun) (const char *op, void **, int);
};
#define ADD_TO_DISPATCH_TABLE(fun, op_string, op_string_helper) \
static const struct dispatch_table entry_##fun \
ATTRIBUTE_SECTION("tests_dispatch_table_section") ATTRIBUTE_USED = \
{ DISPATCH_TABLE_MAGIC, op_string, op_string_helper, fun };
#define FIND_IN_DISPATCH_TABLE(op, to_find, type) do {\
extern struct dispatch_table __start_tests_dispatch_table_section;\
extern struct dispatch_table __stop_tests_dispatch_table_section;\
struct dispatch_table *dt, *begin, *end;\
char *ptr;\
\
begin = &__start_tests_dispatch_table_section;\
end = &__stop_tests_dispatch_table_section;\
ptr = (char*)begin;\
\
to_find = NULL;\
\
while(ptr < (char*)end){\
dt = (struct dispatch_table*)ptr;\
/* Find the magic */\
while(memcmp(dt->magic, DISPATCH_TABLE_MAGIC, sizeof(DISPATCH_TABLE_MAGIC)) != 0){\
ptr++;\
dt = (struct dispatch_table*)ptr;\
}\
if(strcmp(dt->op_string, op) == 0){ \
to_find = dt->type;\
break;\
}\
ptr += sizeof(struct dispatch_table);\
}\
} while(0)
#define FIND_FUN_IN_DISPATCH_TABLE(op, function) FIND_IN_DISPATCH_TABLE(op, function, fun)
#define FIND_HELPER_IN_DISPATCH_TABLE(op, string_helper) FIND_IN_DISPATCH_TABLE(op, string_helper, op_string_helper)
/*****************/
#define GENERIC_TEST_FP_DECL_INIT0(name, ctx) \
fp_t name##_ptr[] = {NULL};
#define GENERIC_TEST_FP_DECL_INIT1(name, ctx) \
fp name##0; \
ret = fp_init(&name##0, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0 };
#define GENERIC_TEST_FP_DECL_INIT2(name, ctx) \
fp name##0, name##1;\
ret = fp_init(&name##0, ctx); EG(ret, err);\
ret = fp_init(&name##1, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0, &name##1 };
#define GENERIC_TEST_FP_DECL_INIT3(name, ctx) \
fp name##0, name##1, name##2;\
ret = fp_init(&name##0, ctx); EG(ret, err);\
ret = fp_init(&name##1, ctx); EG(ret, err);\
ret = fp_init(&name##2, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0, &name##1, &name##2 };
#define GENERIC_TEST_FP_DECL_INIT4(name, ctx) \
fp name##0, name##1, name##2, name##3;\
ret = fp_init(&name##0, ctx); EG(ret, err);\
ret = fp_init(&name##1, ctx); EG(ret, err);\
ret = fp_init(&name##2, ctx); EG(ret, err);\
ret = fp_init(&name##3, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3 };
#define GENERIC_TEST_FP_DECL_INIT5(name, ctx) \
fp name##0, name##1, name##2, name##3, name##4;\
ret = fp_init(&name##0, ctx); EG(ret, err);\
ret = fp_init(&name##1, ctx); EG(ret, err);\
ret = fp_init(&name##2, ctx); EG(ret, err);\
ret = fp_init(&name##3, ctx); EG(ret, err);\
ret = fp_init(&name##4, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3, &name##4 };
#define GENERIC_TEST_FP_DECL_INIT6(name, ctx) \
fp name##0, name##1, name##2, name##3, name##4, name##5;\
ret = fp_init(&name##0, ctx); EG(ret, err);\
ret = fp_init(&name##1, ctx); EG(ret, err);\
ret = fp_init(&name##2, ctx); EG(ret, err);\
ret = fp_init(&name##3, ctx); EG(ret, err);\
ret = fp_init(&name##4, ctx); EG(ret, err);\
ret = fp_init(&name##5, ctx); EG(ret, err);\
fp_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3, &name##4, &name##5 };
#define GENERIC_TEST_NN_DECL_INIT0(name, size) \
nn_t name##_ptr[] = {NULL};
#define GENERIC_TEST_NN_DECL_INIT1(name, size) \
nn name##0; \
ret = nn_init(&name##0, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0 };
#define GENERIC_TEST_NN_DECL_INIT2(name, size) \
nn name##0, name##1; \
ret = nn_init(&name##0, size); EG(ret, err); \
ret = nn_init(&name##1, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0, &name##1 };
#define GENERIC_TEST_NN_DECL_INIT3(name, size) \
nn name##0, name##1, name##2; \
ret = nn_init(&name##0, size); EG(ret, err); \
ret = nn_init(&name##1, size); EG(ret, err); \
ret = nn_init(&name##2, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0, &name##1, &name##2 };
#define GENERIC_TEST_NN_DECL_INIT4(name, size) \
nn name##0, name##1, name##2, name##3; \
ret = nn_init(&name##0, size); EG(ret, err); \
ret = nn_init(&name##1, size); EG(ret, err); \
ret = nn_init(&name##2, size); EG(ret, err); \
ret = nn_init(&name##3, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3 };
#define GENERIC_TEST_NN_DECL_INIT5(name, size) \
nn name##0, name##1, name##2, name##3, name##4; \
ret = nn_init(&name##0, size); EG(ret, err); \
ret = nn_init(&name##1, size); EG(ret, err); \
ret = nn_init(&name##2, size); EG(ret, err); \
ret = nn_init(&name##3, size); EG(ret, err); \
ret = nn_init(&name##4, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3, &name##4 };
#define GENERIC_TEST_NN_DECL_INIT6(name, size) \
nn name##0, name##1, name##2, name##3, name##4, name##5; \
ret = nn_init(&name##0, size); EG(ret, err); \
ret = nn_init(&name##1, size); EG(ret, err); \
ret = nn_init(&name##2, size); EG(ret, err); \
ret = nn_init(&name##3, size); EG(ret, err); \
ret = nn_init(&name##4, size); EG(ret, err); \
ret = nn_init(&name##5, size); EG(ret, err); \
nn_t name##_ptr[] = { &name##0, &name##1, &name##2, &name##3, &name##4, &name##5 };
#define GENERIC_TEST_FP_CLEAR0(name)
#define GENERIC_TEST_FP_CLEAR1(name) \
fp_uninit(&name##0);\
#define GENERIC_TEST_FP_CLEAR2(name) \
fp_uninit(&name##0);\
fp_uninit(&name##1);\
#define GENERIC_TEST_FP_CLEAR3(name) \
fp_uninit(&name##0);\
fp_uninit(&name##1);\
fp_uninit(&name##2);\
#define GENERIC_TEST_FP_CLEAR4(name) \
fp_uninit(&name##0);\
fp_uninit(&name##1);\
fp_uninit(&name##2);\
fp_uninit(&name##3);\
#define GENERIC_TEST_FP_CLEAR5(name) \
fp_uninit(&name##0);\
fp_uninit(&name##1);\
fp_uninit(&name##2);\
fp_uninit(&name##3);\
fp_uninit(&name##4);\
#define GENERIC_TEST_FP_CLEAR6(name) \
fp_uninit(&name##0);\
fp_uninit(&name##1);\
fp_uninit(&name##2);\
fp_uninit(&name##3);\
fp_uninit(&name##4);\
fp_uninit(&name##5);\
#define GENERIC_TEST_nn_uninit0(name)
#define GENERIC_TEST_nn_uninit1(name) \
nn_uninit(&name##0);\
#define GENERIC_TEST_nn_uninit2(name) \
nn_uninit(&name##0);\
nn_uninit(&name##1);\
#define GENERIC_TEST_nn_uninit3(name) \
nn_uninit(&name##0);\
nn_uninit(&name##1);\
nn_uninit(&name##2);\
#define GENERIC_TEST_nn_uninit4(name) \
nn_uninit(&name##0);\
nn_uninit(&name##1);\
nn_uninit(&name##2);\
nn_uninit(&name##3);\
#define GENERIC_TEST_nn_uninit5(name) \
nn_uninit(&name##0);\
nn_uninit(&name##1);\
nn_uninit(&name##2);\
nn_uninit(&name##3);\
nn_uninit(&name##4);\
#define GENERIC_TEST_nn_uninit6(name) \
nn_uninit(&name##0);\
nn_uninit(&name##1);\
nn_uninit(&name##2);\
nn_uninit(&name##3);\
nn_uninit(&name##4);\
nn_uninit(&name##5);\
#define FP_CTX_T_GENERIC_IN(num) ((fp_ctx_t)params[num])
#define FP_T_GENERIC_IN(num) ((fp_t)params[num])
#define NN_T_GENERIC_IN(num) ((nn_t)params[num])
#define UINT_GENERIC_IN(num) ((u64)*((u64*)params[num]))
#define WORD_T_GENERIC_IN(num) ((word_t)*((word_t*)params[num]))
#define INT_GENERIC_IN(num) ((int)*((int*)params[num]))
#define FP_T_GENERIC_OUT(num) (&fp_out##num)
#define NN_T_GENERIC_OUT(num) (&nn_out##num)
#define WORD_T_GENERIC_OUT(num) (&(word_out[num]))
#define INT_GENERIC_OUT(num) (&(int_out[num]))
#define CHECK_FUN_RET there_is_output = 1; fun_out_value = (int)
#define CHECK_FUN_NO_RET there_is_output = 0; fun_out_value = (int)
/* Number of pre-allocated */
#define NUM_PRE_ALLOCATED_NN 6
#define NUM_PRE_ALLOCATED_FP 6
#define MAX_PARAMS 6
#define GENERIC_TEST_NN_DECL_INIT_MAX(name, n) GENERIC_TEST_NN_DECL_INIT6(name, n)
#define GENERIC_TEST_FP_DECL_INIT_MAX(name, ctx) GENERIC_TEST_FP_DECL_INIT6(name, ctx)
/* Check that the string of parameters types only containes 'c', 'f', 'n' and 'u'
* Check that the string of parameters I/O only contains 'i', 'o' and 'O'
*
*/
#define PARAMETERS_SANITY_CHECK(test_num, param_types, param_io) do {\
unsigned int i, real_output = 0;\
assert(sizeof(param_types) == sizeof(param_io));\
for(i = 0; i < sizeof(param_types)-1; i++){\
if((param_types[i] != 'c') && (param_types[i] != 'f') && (param_types[i] != 'n') && (param_types[i] != 'u') && (param_types[i] != 's')){ \
printf("Error: types parameters of test %d mismatch!\n", test_num);\
return 0;\
}\
if((param_io[i] != 'i') && (param_io[i] != 'o') && (param_io[i] != 'O')){\
printf("Error: I/O parameters of test %d mismatch!\n", test_num);\
return 0;\
}\
if((param_io[i] == 'O') && (param_types[i] != 'u') && (param_types[i] != 's')){\
printf("Error: types and I/O parameters of test %d mismatch!\n", test_num);\
return 0;\
}\
if(param_io[i] == 'O'){\
real_output++;\
}\
}\
/* Check that we only have one function output */\
if(real_output > 1){\
printf("Error: multiple function output defined in I/O parameters of test %d!\n", test_num);\
return 0;\
}\
} while(0);
#define SET_PARAMETER_PRETTY_NAME1(a) a
#define SET_PARAMETER_PRETTY_NAME2(a, b) SET_PARAMETER_PRETTY_NAME1(a) "\0" b
#define SET_PARAMETER_PRETTY_NAME3(a, b, c) SET_PARAMETER_PRETTY_NAME2(a, b) "\0" c
#define SET_PARAMETER_PRETTY_NAME4(a, b, c, d) SET_PARAMETER_PRETTY_NAME3(a, b, c) "\0" d
#define SET_PARAMETER_PRETTY_NAME5(a, b, c, d, e) SET_PARAMETER_PRETTY_NAME4(a, b, c, d) "\0" e
#define SET_PARAMETER_PRETTY_NAME6(a, b, c, d, e, f) SET_PARAMETER_PRETTY_NAME5(a, b, c, d, e) "\0" f
#define SET_PARAMETER_PRETTY_NAME(num, ...) SET_PARAMETER_PRETTY_NAME##num(__VA_ARGS__)
/* Parse the helper string to get the pretty print names */
#define GET_PARAMETER_PRETTY_NAME(parameters_string_names_, parameters_string_names, num, out) do {\
unsigned int cnt = 0;\
out = 0;\
\
/* Find the proper position */\
while(out < sizeof(parameters_string_names_)-1){\
if(cnt == num){\
break;\
}\
if(parameters_string_names[out] == '\0'){\
cnt++;\
}\
out++;\
}\
} while(0);
/* Print for a given test all the inputs, outpus and expected outputs */
#define PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_output, there_is_output, parameters_string_names_, bad_num) do { \
unsigned int j;\
unsigned int nn_out_local_cnt = 0, fp_out_local_cnt = 0;\
unsigned int str_pos;\
const char parameters_string_names[] = parameters_string_names_;\
const char real[] = "Real ";\
const char expected[] = "Expected ";\
char expected_modified_string_names[sizeof(expected)+sizeof(parameters_string_names_)];\
char real_modified_string_names[sizeof(real)+sizeof(parameters_string_names_)];\
/* First print the inputs */\
for(j=0; j<sizeof(parameters_types)-1; j++){\
GET_PARAMETER_PRETTY_NAME(parameters_string_names_, parameters_string_names, j, str_pos);\
if(parameters_io[j] == 'i'){\
/* This is an input */\
if(parameters_types[j] == 'c'){\
nn_print(&(parameters_string_names[str_pos]), &(FP_CTX_T_GENERIC_IN(j)->p)); \
}\
if(parameters_types[j] == 'f'){\
nn_print(&(parameters_string_names[str_pos]), &(FP_T_GENERIC_IN(j)->fp_val)); \
}\
if(parameters_types[j] == 'n'){\
nn_print(&(parameters_string_names[str_pos]), NN_T_GENERIC_IN(j));\
}\
if(parameters_types[j] == 'u'){\
printf("%16s: 0x", &(parameters_string_names[str_pos])); \
printf(PRINTF_WORD_HEX_FMT, WORD_T_GENERIC_IN(j)); \
printf("\n"); \
}\
if(parameters_types[j] == 's'){\
printf("%16s:", &(parameters_string_names[str_pos])); \
printf("%d", INT_GENERIC_IN(j)); \
printf("\n"); \
}\
}\
}\
/* Then print the outputs */\
for(j=0; j<sizeof(parameters_types)-1; j++){\
GET_PARAMETER_PRETTY_NAME(parameters_string_names_, parameters_string_names, j, str_pos);\
memset(expected_modified_string_names, 0, sizeof(expected_modified_string_names));\
strcat(expected_modified_string_names, expected);\
strcat(expected_modified_string_names, &(parameters_string_names[str_pos]));\
memset(real_modified_string_names, 0, sizeof(real_modified_string_names));\
strcat(real_modified_string_names, real);\
strcat(real_modified_string_names, &(parameters_string_names[str_pos]));\
if(parameters_io[j] == 'o'){\
/* This is an input that is an output */\
if(parameters_types[j] == 'f'){\
nn_print(real_modified_string_names, &(fp_out_ptr[j]->fp_val)); \
nn_print(expected_modified_string_names, &(FP_T_GENERIC_IN(j)->fp_val)); \
fp_out_local_cnt++;\
}\
if(parameters_types[j] == 'n'){\
nn_print(real_modified_string_names, nn_out_ptr[j]);\
nn_print(expected_modified_string_names, NN_T_GENERIC_IN(j));\
nn_out_local_cnt++;\
}\
if(parameters_types[j] == 'u'){\
printf("%16s: 0x", real_modified_string_names); \
printf(PRINTF_WORD_HEX_FMT, *(WORD_T_GENERIC_OUT(j))); \
printf("\n"); \
printf("%16s: 0x", expected_modified_string_names); \
printf(PRINTF_WORD_HEX_FMT, WORD_T_GENERIC_IN(j)); \
printf("\n"); \
}\
if(parameters_types[j] == 's'){\
printf("%16s: ", real_modified_string_names); \
printf("%d", *(INT_GENERIC_OUT(j))); \
printf("\n"); \
printf("%16s: ", expected_modified_string_names); \
printf("%d", INT_GENERIC_IN(j)); \
printf("\n"); \
}\
}\
if((parameters_io[j] == 'O') && (there_is_output == 1)){\
/* This is a real function output */\
if(parameters_types[j] == 'u'){\
printf("%16s: 0x", real_modified_string_names); \
printf(PRINTF_WORD_HEX_FMT, (word_t)fun_output); \
printf("\n"); \
printf("%16s: 0x", expected_modified_string_names); \
printf(PRINTF_WORD_HEX_FMT, WORD_T_GENERIC_IN(j)); \
printf("\n"); \
}\
if(parameters_types[j] == 's'){\
printf("%16s: ", real_modified_string_names); \
printf("%d", (int)fun_output); \
printf("\n"); \
printf("%16s: ", expected_modified_string_names); \
printf("%d", INT_GENERIC_IN(j)); \
printf("\n"); \
}\
}\
}\
} while(0)
/* Generic testing framework. Seems ugly but does the job! */
#define GENERIC_TEST(test_name, operation_, given_string_helper, fun_name, parameters_types_, parameters_io_, parameters_string_names, fun_output, nn_out_num, fp_out_num, ...) \
int test_##test_name(const char ATTRIBUTE_UNUSED *op, void **params, int test_num);\
int test_##test_name(const char ATTRIBUTE_UNUSED *op, void **params, int test_num){\
unsigned int i;\
int ret, cmp, mismatch = 0; \
const char *op_string = NULL;\
unsigned int n_len ATTRIBUTE_UNUSED = 0;\
int fun_out_value = 0;\
u8 there_is_output = 0;\
unsigned int nn_out_local_cnt = 0, fp_out_local_cnt = 0;\
fp_ctx_t fp_ctx_param ATTRIBUTE_UNUSED = NULL;\
int fp_ctx_initialized ATTRIBUTE_UNUSED = 0;\
\
const char parameters_types[] = parameters_types_;\
const char parameters_io[] = parameters_io_;\
\
const char operation[] = #operation_;\
\
assert(memcmp(operation, op, sizeof(operation)) == 0);\
\
/* Sanity check: check that the parameters passed from the file are the same as the ones declared in the test */\
if(memcmp(global_parameters, parameters_types, LOCAL_MIN(MAX_PARAMS, strlen(parameters_types))) != 0){\
printf("Error: parameters %s given in the test file differ from the test expected parameters (%s)\n", parameters_types, global_parameters);\
return -1;\
}\
\
PARAMETERS_SANITY_CHECK(test_num, parameters_types, parameters_io);\
\
/* Our words used as output of functions */\
word_t word_out[MAX_PARAMS] ATTRIBUTE_UNUSED;\
int int_out[MAX_PARAMS] ATTRIBUTE_UNUSED;\
/* If we find an fp or nn, assume its length is the common length. */\
for(i=0; i<sizeof(parameters_io)-1; i++){\
if((parameters_io[i] == 'o') && (parameters_types[i] == 'f')){\
n_len = (FP_T_GENERIC_IN(i))->fp_val.wlen;\
break;\
}\
if((parameters_io[i] == 'o') && (parameters_types[i] == 'n')){\
n_len = (NN_T_GENERIC_IN(i))->wlen;\
break;\
}\
}\
for(i=0; i<sizeof(parameters_io)-1; i++){\
if(parameters_types[i] == 'c'){\
fp_ctx_param = (FP_CTX_T_GENERIC_IN(i));\
fp_ctx_initialized = 1;\
break;\
}\
}\
GENERIC_TEST_NN_DECL_INIT##nn_out_num(nn_out, n_len * WORD_BYTES);\
assert(fp_out_num == 0 || fp_ctx_initialized != 0);\
GENERIC_TEST_FP_DECL_INIT##fp_out_num(fp_out, fp_ctx_param);\
\
CHECK_FUN_##fun_output fun_name(__VA_ARGS__);\
/* Check generic value return is 0 */\
if(there_is_output == 0){\
assert(fun_out_value == 0);\
}\
\
/* Check result is what we expect */\
FIND_HELPER_IN_DISPATCH_TABLE(operation, op_string);\
assert(op_string != NULL);\
\
for(i=0; i<sizeof(parameters_io)-1; i++){\
if(parameters_io[i] == 'o'){\
/* We have an input that is an output, check it */\
if (parameters_types[i] == 'f') {\
ret = fp_cmp(fp_out_ptr[i], FP_T_GENERIC_IN(i), &cmp); \
if(ret || cmp){\
printf("[-] Test %d (%s): result mismatch\n", test_num, op_string);\
/* Print the expected outputs */\
PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_out_value, there_is_output, parameters_string_names, i);\
mismatch = 1;\
break;\
}\
fp_out_local_cnt++;\
}\
if (parameters_types[i] == 'n') {\
ret = nn_cmp(nn_out_ptr[i], NN_T_GENERIC_IN(i), &cmp); \
if(ret || cmp){\
printf("[-] Test %d (%s): result mismatch\n", test_num, op_string);\
/* Print the expected outputs */\
PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_out_value, there_is_output, parameters_string_names, i);\
mismatch = 1;\
break;\
}\
nn_out_local_cnt++;\
}\
if (parameters_types[i] == 'u') {\
if((*(WORD_T_GENERIC_OUT(i))) != WORD_T_GENERIC_IN(i)){\
printf("[-] Test %d (%s): result mismatch\n", test_num, op_string);\
/* Print the expected outputs */\
PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_out_value, there_is_output, parameters_string_names, i);\
mismatch = 1;\
break;\
}\
}\
if (parameters_types[i] == 's') {\
if((*(INT_GENERIC_OUT(i))) != INT_GENERIC_IN(i)){\
printf("[-] Test %d (%s): result mismatch\n", test_num, op_string);\
/* Print the expected outputs */\
PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_out_value, there_is_output, parameters_string_names, i);\
mismatch = 1;\
break;\
}\
}\
}\
if(parameters_io[i] == 'O'){\
/* We have a function output, check it */\
if(fun_out_value != INT_GENERIC_IN(i)){\
printf("[-] Test %d (%s): result mismatch\n", test_num, op_string);\
/* Print the expected outputs */\
PRINT_ALL(parameters_types, parameters_io, params, nn_out_ptr, fp_out_ptr, fun_out_value, there_is_output, parameters_string_names, i);\
mismatch = 1;\
break;\
}\
}\
}\
\
GENERIC_TEST_nn_uninit##nn_out_num(nn_out);\
GENERIC_TEST_FP_CLEAR##fp_out_num(fp_out);\
\
return !mismatch;\
err:\
printf("[-] Error: general error when initializing variables ...\n");\
exit(-1);\
}\
ADD_TO_DISPATCH_TABLE(test_##test_name, #operation_, given_string_helper)
#define GENERIC_TEST_NN(test_name, operation_, given_string_helper, fun_name, parameters_types_, parameters_io_, parameters_string_names, fun_output, nn_out_num, ...) \
GENERIC_TEST(test_name, operation_, given_string_helper, fun_name, parameters_types_, parameters_io_, parameters_string_names, fun_output, nn_out_num, 0, __VA_ARGS__)
#define GENERIC_TEST_FP(test_name, operation_, given_string_helper, fun_name, parameters_types_, parameters_io_, parameters_string_names, fun_output, nn_out_num, ...) \
GENERIC_TEST(test_name, operation_, given_string_helper, fun_name, parameters_types_, parameters_io_, parameters_string_names, fun_output, nn_out_num, __VA_ARGS__)
/* Global variable to keep track of parameters */
static char global_parameters[MAX_PARAMS];
/*********** NN layer tests ************************************************/
/* Testing shifts and rotates */
GENERIC_TEST_NN(nn_lshift_fixedlen, NN_SHIFT_LEFT_FIXEDLEN, "(fixed)<<", nn_lshift_fixedlen, "nnu", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output", "input", "fixed lshift"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2))
GENERIC_TEST_NN(nn_rshift_fixedlen, NN_SHIFT_RIGHT_FIXEDLEN, "(fixed)>>", nn_rshift_fixedlen, "nnu", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output", "input", "fixed rshift"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2))
GENERIC_TEST_NN(nn_lshift, NN_SHIFT_LEFT, "<<", nn_lshift, "nnu", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output", "input", "lshift"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2))
GENERIC_TEST_NN(nn_rshift, NN_SHIFT_RIGHT, ">>", nn_rshift, "nnu", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output", "input", "rshift"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2))
GENERIC_TEST_NN(nn_lrot, NN_ROTATE_LEFT, "lrot", nn_lrot, "nnuu", "oiii",
SET_PARAMETER_PRETTY_NAME(4, "output", "input", "lrot", "bitlen_base"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2), (bitcnt_t)UINT_GENERIC_IN(3))
GENERIC_TEST_NN(nn_rrot, NN_ROTATE_RIGHT, "rrot", nn_rrot, "nnuu", "oiii",
SET_PARAMETER_PRETTY_NAME(4, "output", "input", "rrot", "bitlen_base"), NO_RET, 1,
NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), (bitcnt_t)UINT_GENERIC_IN(2), (bitcnt_t)UINT_GENERIC_IN(3))
/* Testing xor, or, and, not */
GENERIC_TEST_NN(nn_xor, NN_XOR, "^", nn_xor, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "input2", "output"), NO_RET, 3,
NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0), NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_or, NN_OR, "|", nn_or, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "input2", "output"), NO_RET, 3,
NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0), NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_and, NN_AND, "&", nn_and, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "input2", "output"), NO_RET, 3,
NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0), NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_not, NN_NOT, "~", nn_not, "nn", "io",
SET_PARAMETER_PRETTY_NAME(2, "input", "output"), NO_RET, 2,
NN_T_GENERIC_OUT(1), NN_T_GENERIC_IN(0))
/* Testing add and sub */
GENERIC_TEST_NN(nn_add, NN_ADD, "+", nn_add, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "input2", "output"),
NO_RET, 3, NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_sub, NN_SUB, "-", nn_sub, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "input2", "output"),
NO_RET, 3, NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1))
/* Testing inc and dec */
GENERIC_TEST_NN(nn_inc, NN_INC, "++", nn_inc, "nn", "io",
SET_PARAMETER_PRETTY_NAME(2, "input", "output"), NO_RET, 2,
NN_T_GENERIC_OUT(1), NN_T_GENERIC_IN(0))
GENERIC_TEST_NN(nn_dec, NN_DEC, "--", nn_dec, "nn", "io",
SET_PARAMETER_PRETTY_NAME(2, "input", "output"), NO_RET, 2,
NN_T_GENERIC_OUT(1), NN_T_GENERIC_IN(0))
/* Testing modular add, sub, inc, dec, mul, exp (inputs are supposed < p except for exp) */
GENERIC_TEST_NN(nn_mod_add, NN_MOD_ADD, "+%", nn_mod_add, "nnnn", "iiio",
SET_PARAMETER_PRETTY_NAME(4, "input1", "input2", "modulo", "output"),
NO_RET, 4, NN_T_GENERIC_OUT(3), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
GENERIC_TEST_NN(nn_mod_sub, NN_MOD_SUB, "-%", nn_mod_sub, "nnnn", "iiio",
SET_PARAMETER_PRETTY_NAME(4, "input1", "input2", "modulo", "output"),
NO_RET, 4, NN_T_GENERIC_OUT(3), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
GENERIC_TEST_NN(nn_mod_inc, NN_MOD_INC, "++%", nn_mod_inc, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "modulo", "output"),
NO_RET, 3, NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_mod_dec, NN_MOD_DEC, "--%", nn_mod_dec, "nnn", "iio",
SET_PARAMETER_PRETTY_NAME(3, "input1", "modulo", "output"),
NO_RET, 3, NN_T_GENERIC_OUT(2), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1))
GENERIC_TEST_NN(nn_mod_mul, NN_MOD_MUL, "*%", nn_mod_mul, "nnnn", "iiio",
SET_PARAMETER_PRETTY_NAME(4, "input1", "input2", "modulo", "output"),
NO_RET, 4, NN_T_GENERIC_OUT(3), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
GENERIC_TEST_NN(nn_mod_pow, NN_MOD_POW, "exp%", nn_mod_pow, "nnnn", "iiio",
SET_PARAMETER_PRETTY_NAME(4, "base", "exp", "modulo", "output"),
NO_RET, 4, NN_T_GENERIC_OUT(3), NN_T_GENERIC_IN(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
/* Testing mul */
GENERIC_TEST_NN(nn_mul, NN_MUL, "*", nn_mul, "nnn", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output1", "input1", "input2"),
NO_RET, 1, NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1),
NN_T_GENERIC_IN(2))
GENERIC_TEST_NN(nn_sqr, NN_SQR, "(^2)", nn_sqr, "nn", "oi",
SET_PARAMETER_PRETTY_NAME(2, "output1", "input1"),
NO_RET, 1, NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1))
/* Testing division */
GENERIC_TEST_NN(nn_divrem, NN_DIVREM, "/", nn_divrem, "nnnn", "ooii",
SET_PARAMETER_PRETTY_NAME(4, "quotient", "remainder", "input1", "input2"),
NO_RET, 2, NN_T_GENERIC_OUT(0), NN_T_GENERIC_OUT(1),
NN_T_GENERIC_IN(2), NN_T_GENERIC_IN(3))
GENERIC_TEST_NN(nn_xgcd, NN_XGCD, "xgcd", nn_xgcd, "nnnnns", "oooiio",
SET_PARAMETER_PRETTY_NAME(6, "xgcd", "u", "v", "input1", "input2", "sign"),
NO_RET, 3, NN_T_GENERIC_OUT(0), NN_T_GENERIC_OUT(1), NN_T_GENERIC_OUT(2),
NN_T_GENERIC_IN(3), NN_T_GENERIC_IN(4), INT_GENERIC_OUT(5))
GENERIC_TEST_NN(nn_gcd, NN_GCD, "gcd", nn_gcd, "nnns", "oiio",
SET_PARAMETER_PRETTY_NAME(4, "gcd", "input1", "input2", "sign"),
NO_RET, 1, NN_T_GENERIC_OUT(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2), INT_GENERIC_OUT(3))
GENERIC_TEST_NN(nn_mod, NN_MOD, "%", nn_mod, "nnn", "oii",
SET_PARAMETER_PRETTY_NAME(3, "output", "input1", "input2"),
NO_RET, 1, NN_T_GENERIC_OUT(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
/* Testing modular inversion */
GENERIC_TEST_NN(nn_modinv, NN_MODINV, "(^-1%)", nn_modinv, "nnns", "oiiO",
SET_PARAMETER_PRETTY_NAME(4, "output", "input1", "input2", "ret"),
RET, 1, NN_T_GENERIC_OUT(0),
NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2))
/* Testing modular inversion modulo a 2**n */
GENERIC_TEST_NN(nn_modinv_2exp, NN_MODINV_2EXP, "(^-1%)(2exp)", nn_modinv_2exp, "nnus", "oiio",
SET_PARAMETER_PRETTY_NAME(4, "output", "input1", "input2", "isodd"),
NO_RET, 1, NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1),
UINT_GENERIC_IN(2), INT_GENERIC_OUT(3))
/* Check Montgomery multiplication redcify primitives */
GENERIC_TEST_NN(nn_compute_redc1_coefs, NN_COEF_REDC1, "coef_redc1", nn_compute_redc1_coefs, "nnnu", "ooio",
SET_PARAMETER_PRETTY_NAME(4, "r", "r_square", "p", "mpinv"),
NO_RET, 3, NN_T_GENERIC_OUT(0), NN_T_GENERIC_OUT(1), NN_T_GENERIC_IN(2), WORD_T_GENERIC_OUT(3))
GENERIC_TEST_NN(nn_compute_div_coefs, NN_COEF_DIV, "coef_div", nn_compute_div_coefs, "nuun", "oooi",
SET_PARAMETER_PRETTY_NAME(4, "p_normalized", "p_shift", "p_reciprocal", "p"),
NO_RET, 3, NN_T_GENERIC_OUT(0), WORD_T_GENERIC_OUT(1), WORD_T_GENERIC_OUT(2), NN_T_GENERIC_IN(3))
GENERIC_TEST_NN(nn_mul_redc1, NN_MUL_REDC1, "*_redc1", nn_mul_redc1, "nnnnu", "oiiii",
SET_PARAMETER_PRETTY_NAME(5, "output", "input1", "input2", "p", "mpinv"),
NO_RET, 1, NN_T_GENERIC_OUT(0), NN_T_GENERIC_IN(1), NN_T_GENERIC_IN(2),
NN_T_GENERIC_IN(3), WORD_T_GENERIC_IN(4))
/*********** Fp layer tests ************************************************/
/* Testing addition in F_p */
GENERIC_TEST_FP(fp_add, FP_ADD, "+", fp_add, "cfff", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "sum", "input1", "input2"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), FP_T_GENERIC_IN(3))
/* Testing subtraction in F_p */
GENERIC_TEST_FP(fp_sub, FP_SUB, "-", fp_sub, "cfff", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "diff", "input1", "input2"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), FP_T_GENERIC_IN(3))
/* Testing multiplication in F_p */
GENERIC_TEST_FP(fp_mul, FP_MUL, "*", fp_mul, "cfff", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "prod", "input1", "input2"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), FP_T_GENERIC_IN(3))
GENERIC_TEST_FP(fp_sqr, FP_SQR, "(^2)", fp_sqr, "cff", "ioi",
SET_PARAMETER_PRETTY_NAME(3, "p", "prod", "input1"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2))
/* Testing division in F_p */
GENERIC_TEST_FP(fp_div, FP_DIV, "/", fp_div, "cfff", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "quo", "input1", "input2"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), FP_T_GENERIC_IN(3))
/* Testing Montgomery multiplication in F_p */
GENERIC_TEST_FP(fp_mul_monty, FP_MUL_MONTY, "*_monty", fp_mul_monty, "cfff", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "prod", "input1", "input2"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), FP_T_GENERIC_IN(3))
GENERIC_TEST_FP(fp_sqr_monty, FP_SQR_MONTY, "(^2)_monty", fp_sqr_monty, "cff", "ioi",
SET_PARAMETER_PRETTY_NAME(3, "p", "prod", "input1"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2))
/* Testing exponentiation in F_p */
GENERIC_TEST_FP(fp_pow, FP_POW, "exp", fp_pow, "cffn", "ioii",
SET_PARAMETER_PRETTY_NAME(4, "p", "pow", "input", "exp"),
NO_RET, 0, 2,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_IN(2), NN_T_GENERIC_IN(3))
/* Testing square residue in F_p */
GENERIC_TEST_FP(fp_sqrt, FP_SQRT, "sqrt", fp_sqrt, "cfffs", "iooiO",
SET_PARAMETER_PRETTY_NAME(4, "sqrt1", "sqrt2", "p", "ret"),
RET, 0, 3,
FP_T_GENERIC_OUT(1), FP_T_GENERIC_OUT(2), FP_T_GENERIC_IN(3))
/*****************************************************************/
/*
* Read data on given fd until first newline character and put it in buf
* followed by a null character. buffer size is passed via buflen. The
* length of read line is returned to the caller in buflen on success
* (not including null character terminating read string).
*
* 0 is returned on success.
* -1 is returned on end of file.
* -2 is returned on error (buffer not sufficient, etc)
*/
int read_string(int fd, char *buf, unsigned int *buflen);
int read_string(int fd, char *buf, unsigned int *buflen)
{
unsigned int pos = 0, len;
int ret = -1;
char c;
MUST_HAVE((buf != NULL) && (buflen != NULL), ret, err);
len = *buflen;
if (len < 2) {
ret = -2;
goto err;
}
len -= 1; /* keep some space to terminate the string */
while ((len > 0) && ((ret = read(fd, &c, 1)) != 0) && (c != '\n')) {
buf[pos++] = c;
len -= 1;
}
if (len == 0) {
ret = -2;
goto err;
}
if (!ret) {
ret = -1;
goto err;
}
/* Terminate the string */
buf[pos] = 0;
*buflen = pos;
ret = 0;
err:
return ret;
}
/*
* Parse a test file and perform the tests it provides, one
* by one, in order.
*/
int main(int argc, char *argv[])
{
nn fp_ctx_modulus, fp_ctx_r, fp_ctx_r_square, fp_ctx_mpinv;
nn fp_ctx_pshift, fp_ctx_pnorm, fp_ctx_prec;
fp_ctx fp_ctx_param;
int ret, cmp;
u64 u_params[MAX_PARAMS];
void *params[MAX_PARAMS];
unsigned int ibuflen = BIT_LEN_WORDS(NN_MAX_BIT_LEN) * WORD_BYTES * 10;
unsigned long int test_num, line = 0, oktests = 0;
int test_ret;
unsigned int len = ibuflen;
int nrecs;
int fd = 0, nn_local_cnt = 0, fp_local_cnt = 0, fp_ctx_local_cnt = 0;
unsigned int nn_len;
char op[1024];
char *ibuf = NULL, *rec = NULL;
nn *tmp;
fp *fp_tmp;
int (*curr_test_fun) (const char *, void **, int);
unsigned long p_tmp;
ret = nn_init(&fp_ctx_modulus, 0); EG(ret, err);
ret = nn_init(&fp_ctx_r, 0); EG(ret, err);
ret = nn_init(&fp_ctx_r_square, 0); EG(ret, err);
ret = nn_init(&fp_ctx_mpinv, 0); EG(ret, err);
ret = nn_init(&fp_ctx_pshift, 0); EG(ret, err);
ret = nn_init(&fp_ctx_pnorm, 0); EG(ret, err);
ret = nn_init(&fp_ctx_prec, 0); EG(ret, err);
/* First "fake" context initialization with junk value
* one as prime number
*/
ret = nn_one(&fp_ctx_modulus); EG(ret, err);
ret = fp_ctx_init_from_p(&fp_ctx_param, &fp_ctx_modulus); EG(ret, err);
GENERIC_TEST_FP_DECL_INIT_MAX(fp_params, &fp_ctx_param)
GENERIC_TEST_NN_DECL_INIT_MAX(nn_params, 0)
#ifdef WITH_ASSERT_BACKTRACE
memset(backtrace_buffer, 0, sizeof(backtrace_buffer) - 1);
if (signal(SIGINT, assert_signal_handler) == SIG_ERR) {
printf("Error: can't catch SIGINT signal ...\n");
return -1;
}
#endif
if (argc > 2) {
printf("Usage: %s [test_file]\n", argv[0]);
printf(" If no test_file provided, stdin is taken\n");
return -1;
}
/* Special case where we want to dump information */
if (argc == 2) {
if (memcmp(argv[1], "-info", sizeof("-info")) == 0){
printf("%d %d\n", WORDSIZE, NN_MAX_BASE);
return 0;
}
}
ibuf = (char*)malloc(ibuflen);
if (!ibuf) {
return -1;
}
memset(ibuf, 0, ibuflen);
if(argc == 2){
fd = open(argv[1], O_RDONLY);
}
else{
fd = STDIN_FILENO;
}
while (read_string(fd, ibuf, &len) == 0) {
char *t, *s = ibuf;
int i;
/* Find end of first record (the test number) */
t = strchr(s, ' ');
if (t == NULL) {
printf("\nLine %lu: unable to find record #1\n", line);
return -1;
}
*t = 0; /* mark end of record */
test_num = strtoul(s, NULL, 10);
assert(line == test_num);
s = t + 1; /* jump to beginning of next record */
/* Find end of second record (operation type) */
t = strchr(s, ' ');
if (t == NULL) {
printf("\nLine %lu: unable to find record #2\n", line);
return -1;
}
*t = 0; /* mark end of record */
strncpy(op, s, sizeof(op)); /* Copy opcode */
s = t + 1; /* jump to beginning of next record */
/* Pretty print the evolution of our tests */
if((line % 1000 == 0) && (line != 0)){
printf("\r%*s", 40, "");
printf("\rTest %lu on the go [%s]", line, op);
fflush(stdout);
}
/* Find end of third record (str of types for next records) */
t = strchr(s, ' ');
if (t == NULL) {
printf("\nLine %lu: unable to find record #3\n", line);
return -1;
}
*t = 0; /* mark end of record */
nrecs = (int)(t - s);
rec = t + 1;
ADD_TO_BACKTRACE("--------------\n");
for (i = 0; i < nrecs; i++) {
/* Find end of record */
t = strchr(rec, ' ');
if (t == NULL) {
t = ibuf + len;
}
*t = 0;
switch (s[i]) {
case 'c': /* fp_ctx */