程序代码：
#include <stdio.h>
#include <string.h>
#define MAX_BUFFER_LEN 4096 /* max line length */
#define INSN_NUM 3 /* the number of entry and retw insns */
/* specify insns which need to be consider */
const char *insns[INSN_NUM] = {
"entry",
"retw",
"retw.n"
};
/* record current status */
static int sequence = 0; /* the sequence of access specify function */
static int status = 0, laststatus = 0; /* entry: +1, retw: -1 */
int main(int argc, char **argv)
{
char linebuf[MAX_BUFFER_LEN]; /* record line info */
char functionAddr[16] = {"0x20000000"}; /* record function address string */
unsigned int enableprint = 0;
if (argc != 2 ) {
fprintf(stderr, "usage : <tracefile> <functionAddrStr>\n");
fprintf(stderr, "example: xtensa_assemble_trace 0x20000000\n");
return -1;
}
FILE *fp = fopen(argv[1], "r");
// FILE *fp = fopen("assemble_trace.txt", "r");
if (!fp) {
fprintf(stderr, "cannot open %s\n", argv[1]);
return -1;
}
memset(functionAddr, 0, sizeof(functionAddr));
memcpy(functionAddr, argv[2], sizeof(functionAddr));
while(fgets(linebuf, MAX_BUFFER_LEN, fp)) {
unsigned int i = 0;
unsigned int statusflag = 0;
/* only check the call address when the statusflag =0 to avoid recursive call*/
if (enableprint == 0) {
if (strstr(linebuf, "call") && strstr(linebuf, functionAddr))
enableprint = 1; /* enable to print the content */
} else {
/* check there is entry or retw insns */
for (i=0; i<INSN_NUM; i++) {
if (strstr(linebuf, insns[i])) {
statusflag = 1; /* exist entry or retw insns */
break;
}
}
/* update the status , no need to update if flag == 0 */
if (statusflag == 1)
{
switch(i) {
case 0: status += 1; break; /* entry: +1 */
case 1: /* retw: -1 */
case 2: status -= 1; break; /* retw.n: -1 */
default: printf("error flag status\n"); return -1;
}
/* check current status */
// printf("current status = %d\n", status);
if ( status < 0 ) {
printf("error status value\n");
return -1;
}
}
}
if ( (status != 0) || (laststatus != 0) ) {
printf("%s\n", linebuf);
}
if ( (status == 0) && (laststatus == 1) )
enableprint = 0;
laststatus = status; /* make sure print the last retw insn */
}
return 0;
}
/* trace file format:
call8 0x10000000
entry a1,320
{ /"dd1" /ds /#dsd
s32i a6,a1,112
nop \//dd
movi a6,0
}
call8 0x20000000
entry a1,320
{ /"dd2" /ds /#dsd
s32i a6,a1,112
nop \//dd
movi a6,0
}
retw
{ /"dd3" /ds /#dsd
s32i a6,a1,112
nop \//dd
movi a6,0
}
retw.n
{ /"dd4" /ds /#dsd
s32i a6,a1,112
nop \//dd
movi a6,0
}
*/
assemble_trace.rar
(549 Bytes)
