diff options
Diffstat (limited to 'util-linux/readprofile.c')
| -rw-r--r-- | util-linux/readprofile.c | 67 |
1 files changed, 33 insertions, 34 deletions
diff --git a/util-linux/readprofile.c b/util-linux/readprofile.c index 8fc33be..219c0c1 100644 --- a/util-linux/readprofile.c +++ b/util-linux/readprofile.c @@ -61,27 +61,22 @@ #define S_LEN 128 -/* These are the defaults */ -static const char defaultmap[] ALIGN1 = "/boot/System.map"; -static const char defaultpro[] ALIGN1 = "/proc/profile"; - int readprofile_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int readprofile_main(int argc UNUSED_PARAM, char **argv) { FILE *map; const char *mapFile, *proFile; - unsigned long indx = 1; + unsigned long indx; size_t len; - uint64_t add0 = 0; + uint64_t add0; unsigned int step; unsigned int *buf, total, fn_len; unsigned long long fn_add, next_add; /* current and next address */ char fn_name[S_LEN], next_name[S_LEN]; /* current and next name */ char mapline[S_LEN]; char mode[8]; - int maplineno = 1; - int header_printed; - int multiplier = 0; + int maplineno; + int multiplier; unsigned opt; enum { OPT_M = (1 << 0), @@ -106,8 +101,9 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) #define next (current^1) - proFile = defaultpro; - mapFile = defaultmap; + proFile = "/proc/profile"; + mapFile = "/boot/System.map"; + multiplier = 0; opt = getopt32(argv, "M:+m:p:nabsirv", &multiplier, &mapFile, &proFile); @@ -122,7 +118,7 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) if (!optMult) to_write = 1; /* sth different from sizeof(int) */ - fd = xopen(defaultpro, O_WRONLY); + fd = xopen("/proc/profile", O_WRONLY); xwrite(fd, &multiplier, to_write); close(fd); return EXIT_SUCCESS; @@ -133,12 +129,13 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) */ len = MAXINT(ssize_t); buf = xmalloc_xopen_read_close(proFile, &len); + len /= sizeof(*buf); + if (!optNative) { - int entries = len / sizeof(*buf); - int big = 0, small = 0, i; + int big = 0, small = 0; unsigned *p; - for (p = buf+1; p < buf+entries; p++) { + for (p = buf+1; p < buf+len; p++) { if (*p & ~0U << (sizeof(*buf)*4)) big++; if (*p & ((1 << (sizeof(*buf)*4))-1)) @@ -147,15 +144,15 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) if (big > small) { bb_error_msg("assuming reversed byte order, " "use -n to force native byte order"); - for (p = buf; p < buf+entries; p++) - for (i = 0; i < sizeof(*buf)/2; i++) { - unsigned char *b = (unsigned char *) p; - unsigned char tmp; - - tmp = b[i]; - b[i] = b[sizeof(*buf)-i-1]; - b[sizeof(*buf)-i-1] = tmp; - } + BUILD_BUG_ON(sizeof(*p) > 8); + for (p = buf; p < buf+len; p++) { + if (sizeof(*p) == 2) + *p = bswap_16(*p); + if (sizeof(*p) == 4) + *p = bswap_32(*p); + if (sizeof(*p) == 8) + *p = bb_bswap_64(*p); + } } } @@ -165,10 +162,9 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) return EXIT_SUCCESS; } - total = 0; - map = xfopen_for_read(mapFile); - + add0 = 0; + maplineno = 1; while (fgets(mapline, S_LEN, map)) { if (sscanf(mapline, "%llx %s %s", &fn_add, mode, fn_name) != 3) bb_error_msg_and_die("%s(%i): wrong map line", @@ -187,8 +183,11 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) /* * Main loop. */ + total = 0; + indx = 1; while (fgets(mapline, S_LEN, map)) { - unsigned int this = 0; + bool header_printed; + unsigned int this; if (sscanf(mapline, "%llx %s %s", &next_add, mode, next_name) != 3) bb_error_msg_and_die("%s(%i): wrong map line", @@ -198,17 +197,17 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) /* ignore any LEADING (before a '[tT]' symbol is found) Absolute symbols */ - if ((*mode == 'A' || *mode == '?') && total == 0) continue; - if (*mode != 'T' && *mode != 't' - && *mode != 'W' && *mode != 'w' - ) { + if ((mode[0] == 'A' || mode[0] == '?') && total == 0) + continue; + if ((mode[0]|0x20) != 't' && (mode[0]|0x20) != 'w') { break; /* only text is profiled */ } - if (indx >= len / sizeof(*buf)) + if (indx >= len) bb_error_msg_and_die("profile address out of range. " "Wrong map file?"); + this = 0; while (indx < (next_add-add0)/step) { if (optBins && (buf[indx] || optAll)) { if (!header_printed) { @@ -256,7 +255,7 @@ int readprofile_main(int argc UNUSED_PARAM, char **argv) } /* clock ticks, out of kernel text - probably modules */ - printf("%6u %s\n", buf[len/sizeof(*buf)-1], "*unknown*"); + printf("%6u *unknown*\n", buf[len-1]); /* trailer */ if (optVerbose) |