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/* encode-1.c -- Test for encoder in libsframe.
Copyright (C) 2022-2025 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
static int
add_fde1 (sframe_encoder_ctx *encode, int idx)
{
int i, err;
/* A contiguous block containing 4 FREs. */
sframe_frame_row_entry fres[]
= { {0x0, {0x8, 0, 0}, 0x3},
{0x1, {0x10, 0xf0, 0}, 0x5},
{0x4, {0x10, 0xf0, 0}, 0x4},
{0x1a, {0x8, 0xf0, 0}, 0x5}
};
unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1,
SFRAME_FDE_TYPE_PCINC);
err = sframe_encoder_add_funcdesc (encode, 0xfffff03e, 0x1b, finfo, 4);
if (err == -1)
return err;
for (i = 0; i < 4; i++)
if (sframe_encoder_add_fre (encode, idx,fres+i) == SFRAME_ERR)
return -1;
return 0;
}
static int
add_fde2 (sframe_encoder_ctx *encode, int idx)
{
int i, err;
/* A contiguous block containing 4 FREs. */
sframe_frame_row_entry fres[]
= { {0x0, {0x8, 0, 0}, 0x3},
{0x1, {0x10, 0xf0, 0}, 0x5},
{0x4, {0x10, 0xf0, 0}, 0x4},
{0xf, {0x8, 0xf0, 0}, 0x5}
};
unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1,
SFRAME_FDE_TYPE_PCINC);
err = sframe_encoder_add_funcdesc (encode, 0xfffff059, 0x10, finfo, 4);
if (err == -1)
return err;
for (i = 0; i < 4; i++)
if (sframe_encoder_add_fre (encode, idx, fres+i) == SFRAME_ERR)
return -1;
return 0;
}
/*
* SFrame info from the following source (2 fdes, 4 fres in each fde):
* static int cnt;
* int foo() { return ++cnt; }
* int main() { return foo(); }
*/
#define DATA "DATA2"
static int
data_match (char *sframe_buf, size_t sz)
{
FILE *fp;
struct stat st;
char *sf_buf;
size_t sf_size;
int diffs;
fp = fopen (DATA, "r");
if (fp == NULL)
return 0;
if (fstat (fileno (fp), &st) < 0)
{
perror ("fstat");
fclose (fp);
return 0;
}
sf_buf = malloc (st.st_size);
if (sf_buf == NULL)
{
perror ("malloc");
return 0;
}
sf_size = fread (sf_buf, 1, st.st_size, fp);
fclose (fp);
if (sf_size == 0 || sf_buf == NULL)
{
fprintf (stderr, "Encode: Read section failed\n");
return 0;
}
if (sf_size != sz)
return 0;
diffs = memcmp (sf_buf, sframe_buf, sz);
free (sf_buf);
return diffs == 0;
}
int main (void)
{
sframe_encoder_ctx *encode;
sframe_frame_row_entry frep;
char *sframe_buf;
size_t sf_size;
int err = 0;
unsigned int fde_cnt = 0;
int match_p = 0;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
encode = sframe_encode (SFRAME_VERSION, 0,
SFRAME_ABI_AMD64_ENDIAN_LITTLE,
SFRAME_CFA_FIXED_FP_INVALID,
-8, /* Fixed RA offset for AMD64. */
&err);
fde_cnt = sframe_encoder_get_num_fidx (encode);
TEST ("encode-1: Encoder FDE count", fde_cnt == 0);
err = sframe_encoder_add_fre (encode, 1, &frep);
TEST ("encode-1: Encoder update workflow", err == SFRAME_ERR);
err = add_fde1 (encode, 0);
TEST ("encode-1: Encoder adding FDE1", err == 0);
err = add_fde2 (encode, 1);
TEST ("encode-1: Encoder adding FDE2", err == 0);
fde_cnt = sframe_encoder_get_num_fidx (encode);
TEST ("encode-1: Encoder FDE count", fde_cnt == 2);
sframe_buf = sframe_encoder_write (encode, &sf_size, &err);
TEST ("encode-1: Encoder write", err == 0);
match_p = data_match (sframe_buf, sf_size);
TEST ("encode-1: Encode buffer match", match_p == 1);
sframe_encoder_free (&encode);
return 0;
}
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