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Fix a serious memory corruption problem resulting 

out of the chaining of both, the stk500v2 and the jtagmkII
programmers for some programming hardware (JTAG ICE mkII and AVR
Dragon running in ISP, HVSP or PP mode), where both programmers
have to maintain their private programmer data.



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@834 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2009-07-06 22:10:20 +00:00
parent 8897b86d6d
commit 202d98a7f8
2 changed files with 84 additions and 7 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2009-07-07 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* stk500v2.c: Fix a serious memory corruption problem resulting
out of the chaining of both, the stk500v2 and the jtagmkII
programmers for some programming hardware (JTAG ICE mkII and AVR
Dragon running in ISP, HVSP or PP mode), where both programmers
have to maintain their private programmer data.
2009-07-02 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* configure.ac: Post-release (is pre-release...)

81
stk500v2.c
View File

@ -118,6 +118,13 @@ struct pdata
pgmtype;
AVRPART *lastpart;
/*
* Chained pdata for the JTAG ICE mkII backend. This is used when
* calling the backend functions for ISP/HVSP/PP programming
* functionality of the JTAG ICE mkII and AVR Dragon.
*/
void *chained_pdata;
};
#define PDATA(pgm) ((struct pdata *)(pgm->cookie))
@ -278,11 +285,46 @@ static void stk500v2_setup(PROGRAMMER * pgm)
PDATA(pgm)->command_sequence = 1;
}
static void stk500v2_jtagmkII_setup(PROGRAMMER * pgm)
{
void *mycookie, *theircookie;
if ((pgm->cookie = malloc(sizeof(struct pdata))) == 0) {
fprintf(stderr,
"%s: stk500v2_setup(): Out of memory allocating private data\n",
progname);
exit(1);
}
memset(pgm->cookie, 0, sizeof(struct pdata));
PDATA(pgm)->command_sequence = 1;
/*
* Now, have the JTAG ICE mkII backend allocate its own private
* data. Store our own cookie in a safe place for the time being.
*/
mycookie = pgm->cookie;
jtagmkII_setup(pgm);
theircookie = pgm->cookie;
pgm->cookie = mycookie;
PDATA(pgm)->chained_pdata = theircookie;
}
static void stk500v2_teardown(PROGRAMMER * pgm)
{
free(pgm->cookie);
}
static void stk500v2_jtagmkII_teardown(PROGRAMMER * pgm)
{
void *mycookie;
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
jtagmkII_teardown(pgm);
free(mycookie);
}
static unsigned short
b2_to_u16(unsigned char *b)
@ -326,6 +368,7 @@ static int stk500v2_jtagmkII_send(PROGRAMMER * pgm, unsigned char * data, size_t
unsigned char *cmdbuf;
int rv;
unsigned short sz;
void *mycookie;
sz = get_jtagisp_return_size(data[0]);
if (sz == 0) {
@ -353,12 +396,15 @@ static int stk500v2_jtagmkII_send(PROGRAMMER * pgm, unsigned char * data, size_t
progname);
exit(1);
}
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
cmdbuf[0] = CMND_ISP_PACKET;
cmdbuf[1] = sz & 0xff;
cmdbuf[2] = (sz >> 8) & 0xff;
memcpy(cmdbuf + 3, data, len);
rv = jtagmkII_send(pgm, cmdbuf, len + 3);
free(cmdbuf);
pgm->cookie = mycookie;
return rv;
}
@ -423,8 +469,12 @@ static int stk500v2_jtagmkII_recv(PROGRAMMER * pgm, unsigned char msg[],
{
int rv;
unsigned char *jtagmsg;
void *mycookie;
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
rv = jtagmkII_recv(pgm, &jtagmsg);
pgm->cookie = mycookie;
if (rv <= 0) {
fprintf(stderr, "%s: stk500v2_jtagmkII_recv(): error in jtagmkII_recv()\n",
progname);
@ -2571,9 +2621,13 @@ static void stk500v2_print_parms1(PROGRAMMER * pgm, const char * p)
int prescale;
double f;
const char *unit;
void *mycookie;
if (PDATA(pgm)->pgmtype == PGMTYPE_JTAGICE_MKII) {
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
jtagmkII_getparm(pgm, PAR_OCD_VTARGET, vtarget_jtag);
pgm->cookie = mycookie;
fprintf(stderr, "%sVtarget : %.1f V\n", p,
b2_to_u16(vtarget_jtag) / 1000.0);
} else {
@ -2681,6 +2735,7 @@ static int stk500v2_perform_osccal(PROGRAMMER * pgm)
static int stk500v2_jtagmkII_open(PROGRAMMER * pgm, char * port)
{
long baud;
void *mycookie;
if (verbose >= 2)
fprintf(stderr, "%s: stk500v2_jtagmkII_open()\n", progname);
@ -2717,12 +2772,16 @@ static int stk500v2_jtagmkII_open(PROGRAMMER * pgm, char * port)
*/
stk500v2_drain(pgm, 0);
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
if (jtagmkII_getsync(pgm, EMULATOR_MODE_SPI) != 0) {
fprintf(stderr, "%s: failed to sync with the JTAG ICE mkII in ISP mode\n",
progname);
pgm->close(pgm); /* sign off correctly */
pgm->cookie = mycookie;
exit(1);
}
pgm->cookie = mycookie;
PDATA(pgm)->pgmtype = PGMTYPE_JTAGICE_MKII;
@ -2748,6 +2807,7 @@ static int stk500v2_jtagmkII_open(PROGRAMMER * pgm, char * port)
static int stk500v2_dragon_isp_open(PROGRAMMER * pgm, char * port)
{
long baud;
void *mycookie;
if (verbose >= 2)
fprintf(stderr, "%s: stk500v2_dragon_isp_open()\n", progname);
@ -2784,12 +2844,16 @@ static int stk500v2_dragon_isp_open(PROGRAMMER * pgm, char * port)
*/
stk500v2_drain(pgm, 0);
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
if (jtagmkII_getsync(pgm, EMULATOR_MODE_SPI) != 0) {
fprintf(stderr, "%s: failed to sync with the JTAG ICE mkII in ISP mode\n",
progname);
pgm->close(pgm); /* sign off correctly */
pgm->cookie = mycookie;
exit(1);
}
pgm->cookie = mycookie;
PDATA(pgm)->pgmtype = PGMTYPE_JTAGICE_MKII;
@ -2815,6 +2879,7 @@ static int stk500v2_dragon_isp_open(PROGRAMMER * pgm, char * port)
static int stk500v2_dragon_hv_open(PROGRAMMER * pgm, char * port)
{
long baud;
void *mycookie;
if (verbose >= 2)
fprintf(stderr, "%s: stk500v2_dragon_hv_open()\n", progname);
@ -2851,12 +2916,16 @@ static int stk500v2_dragon_hv_open(PROGRAMMER * pgm, char * port)
*/
stk500v2_drain(pgm, 0);
mycookie = pgm->cookie;
pgm->cookie = PDATA(pgm)->chained_pdata;
if (jtagmkII_getsync(pgm, EMULATOR_MODE_HV) != 0) {
fprintf(stderr, "%s: failed to sync with the JTAG ICE mkII in HV mode\n",
progname);
pgm->close(pgm); /* sign off correctly */
pgm->cookie = mycookie;
exit(1);
}
pgm->cookie = mycookie;
PDATA(pgm)->pgmtype = PGMTYPE_JTAGICE_MKII;
@ -3486,8 +3555,8 @@ void stk500v2_jtagmkII_initpgm(PROGRAMMER * pgm)
pgm->print_parms = stk500v2_print_parms;
pgm->set_sck_period = stk500v2_set_sck_period_mk2;
pgm->perform_osccal = stk500v2_perform_osccal;
pgm->setup = jtagmkII_setup;
pgm->teardown = jtagmkII_teardown;
pgm->setup = stk500v2_jtagmkII_setup;
pgm->teardown = stk500v2_jtagmkII_teardown;
pgm->page_size = 256;
}
@ -3550,8 +3619,8 @@ void stk500v2_dragon_pp_initpgm(PROGRAMMER * pgm)
pgm->set_varef = stk500v2_set_varef;
pgm->set_fosc = stk500v2_set_fosc;
pgm->set_sck_period = stk500v2_set_sck_period_mk2;
pgm->setup = jtagmkII_setup;
pgm->teardown = jtagmkII_teardown;
pgm->setup = stk500v2_jtagmkII_setup;
pgm->teardown = stk500v2_jtagmkII_teardown;
pgm->page_size = 256;
}
@ -3583,8 +3652,8 @@ void stk500v2_dragon_hvsp_initpgm(PROGRAMMER * pgm)
pgm->set_varef = stk500v2_set_varef;
pgm->set_fosc = stk500v2_set_fosc;
pgm->set_sck_period = stk500v2_set_sck_period_mk2;
pgm->setup = jtagmkII_setup;
pgm->teardown = jtagmkII_teardown;
pgm->setup = stk500v2_jtagmkII_setup;
pgm->teardown = stk500v2_jtagmkII_teardown;
pgm->page_size = 256;
}