FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/dspapidump.c @ 965:2969032bdfac
fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing
The only 100% safe way to pass a NULL pointer as a function argument
in K&R C is to cast 0 to a pointer type; failing to do so may cause
mysterious bugs (invalid stack frames or garbage in argument registers)
on 64-bit machines. This issue has already been fixed in most of
FC host tools, but I just found some missed spots: passing of NULL UDH
to PDU encoding functions in fcup-smsend[mult] in the case of single
(not concatenated) SMS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 01 Sep 2023 07:33:51 +0000 |
parents | e7502631a0f9 |
children |
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/* * This utility uses ETM in synchronous mode to read and dump the contents * of the DSP API RAM in a target Calypso GSM device while the firmware is * running. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <stdint.h> #include <endian.h> #include "exitcodes.h" #define APIF_ADDR 0xFFD00000 #define API_SIZE_IN_WORDS 0x2000 single_op_main() { uint16_t buf[64], *linebase; unsigned off; int rc, i, j; for (off = 0; off < API_SIZE_IN_WORDS; ) { rc = do_memory_read_16(APIF_ADDR + off * 2, buf, 0x40); if (rc) return(rc); for (i = 0; i < 8; i++) { printf("%04X:", off); linebase = buf + i * 8; for (j = 0; j < 8; j++) printf(" %04X", le16toh(linebase[j])); putchar('\n'); off += 8; } } return(0); }