FreeCalypso > hg > freecalypso-sw
view rvinterf/ctracedec/decode.c @ 923:10b4bed10192
gsm-fw/L1: fix for the DSP patch corruption bug
The L1 code we got from the LoCosto fw contains a feature for DSP CPU load
measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier
DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the
code dealing with that feature is conditionalized as #if (DSP >= 38),
but one spot was missed, and the MCU code was writing into an API word
dealing with this feature. In TCS211 this DSP API word happens to be
used by the DSP code patch, hence that write was corrupting the patched
DSP code.
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
---|---|
date | Mon, 19 Oct 2015 17:13:56 +0000 |
parents | 4c6e7ada647b |
children |
line wrap: on
line source
/* * This module implements the actual decoding of compressed traces. */ #include <sys/types.h> #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> extern char *str2ind_tab_filename; extern int str2ind_array_size; extern char **str2ind_orig_strings; extern char **str2ind_param_strings; #define MAX_PRINTF_PARAMS 16 static int cindex, cindex_nchars; static u_char param_bytes_array[256]; static int param_bytes_count; static char *format_string, *param_type_string; static int num_printf_params; static u_long printf_params[MAX_PRINTF_PARAMS]; static char output_buf[2048]; decode_hex_digit(c) { if (isdigit(c)) return(c - '0'); else if (isupper(c)) return(c - 'A' + 10); else return(c - 'a' + 10); } static int decode_idx_and_params(line) char *line; { char *cp; u_char *dp; for (cp = line; isdigit(*cp); cp++) ; if (*cp && *cp != ' ') return(-1); cindex = atoi(line); cindex_nchars = cp - line; for (dp = param_bytes_array; *cp; ) { if (*cp++ != ' ') return(-1); if (!isxdigit(cp[0]) || !isxdigit(cp[1])) return(-1); *dp++ = decode_hex_digit(cp[0]) << 4 | decode_hex_digit(cp[1]); cp += 2; } param_bytes_count = dp - param_bytes_array; return(0); } static void decode_parameters(filename_for_errs, lineno_for_errs) char *filename_for_errs; { int pi, type; u_char *bp, *endp; bp = param_bytes_array; endp = bp + param_bytes_count; for (pi = 0; pi < num_printf_params; pi++) { type = param_type_string[pi]; switch (type) { case 'c': if (bp >= endp) { wrong_param_byte_count: fprintf(stderr, "%s line %d: wrong number of parameter bytes for %s entry #%d\n", filename_for_errs, lineno_for_errs, str2ind_tab_filename, cindex); exit(1); } printf_params[pi] = *bp++; continue; case 'i': case 'p': case '*': if (bp > endp - 4) goto wrong_param_byte_count; printf_params[pi] = (u_long) bp[0] | (u_long) bp[1] << 8 | (u_long) bp[2] << 16 | (u_long) bp[3] << 24; bp += 4; continue; case 's': printf_params[pi] = (u_long) bp; for (;;) { if (bp >= endp) { fprintf(stderr, "%s line %d: unterminated string parameter in compressed trace\n", filename_for_errs, lineno_for_errs); exit(1); } if (!*bp++) break; } continue; default: fprintf(stderr, "%s entry #%d: parameter type \'%c\' not supported\n", str2ind_tab_filename, cindex, type); exit(1); } } if (bp != endp) goto wrong_param_byte_count; } process_ctrace_line(line, cindex_offset, filename_for_errs, lineno_for_errs) char *line, *filename_for_errs; { if (decode_idx_and_params(line + cindex_offset) < 0) { fprintf(stderr, "%s line %d: unable to decode compressed trace line\n", filename_for_errs, lineno_for_errs); exit(1); } if (cindex >= str2ind_array_size) { fprintf(stderr, "%s line %d: index %d exceeds the range of %s\n", filename_for_errs, lineno_for_errs, cindex, str2ind_tab_filename); exit(1); } format_string = str2ind_orig_strings[cindex]; param_type_string = str2ind_param_strings[cindex]; num_printf_params = strlen(param_type_string); if (num_printf_params > MAX_PRINTF_PARAMS) { fprintf(stderr, "error: entry #%d in %s has too many parameters\n", cindex, str2ind_tab_filename); exit(1); } decode_parameters(filename_for_errs, lineno_for_errs); ind2str_doprnt(format_string, printf_params, output_buf); printf("%.*s \"%s\"\n", cindex_offset + cindex_nchars, line, output_buf); return(0); }