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target: cortex_m: fix segfault with HLA 

The HLA target shares an examine handler with cortex_m but since it
lacks direct access to DAP, some operations need to be omitted.

Change-Id: Ifdd9d3da4a3a3c2e1c9721284b21d041b3ccaa7a
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3183
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This commit is contained in:
Paul Fertser 2015-12-30 10:43:32 +03:00 committed by Andreas Fritiofson
parent 5bee7f5b2c
commit 32bb775c7a
1 changed files with 17 additions and 17 deletions
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34
src/target/cortex_m.c
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@ -1891,25 +1891,25 @@ int cortex_m_examine(struct target *target)
struct adiv5_dap *swjdp = cortex_m->armv7m.arm.dap;
struct armv7m_common *armv7m = target_to_armv7m(target);
retval = dap_dp_init(swjdp);
if (retval != ERROR_OK) {
LOG_ERROR("Could not initialize the debug port");
return retval;
}
/* Search for the MEM-AP */
retval = dap_find_ap(swjdp, AP_TYPE_AHB_AP, &armv7m->debug_ap);
if (retval != ERROR_OK) {
LOG_ERROR("Could not find MEM-AP to control the core");
return retval;
}
/* Leave (only) generic DAP stuff for debugport_init(); */
armv7m->debug_ap->memaccess_tck = 8;
/* stlink shares the examine handler but does not support
* all its calls */
if (!armv7m->stlink) {
retval = dap_dp_init(swjdp);
if (retval != ERROR_OK) {
LOG_ERROR("Could not initialize the debug port");
return retval;
}
/* Search for the MEM-AP */
retval = dap_find_ap(swjdp, AP_TYPE_AHB_AP, &armv7m->debug_ap);
if (retval != ERROR_OK) {
LOG_ERROR("Could not find MEM-AP to control the core");
return retval;
}
/* Leave (only) generic DAP stuff for debugport_init(); */
armv7m->debug_ap->memaccess_tck = 8;
retval = mem_ap_init(armv7m->debug_ap);
if (retval != ERROR_OK)
return retval;
@ -1959,7 +1959,7 @@ int cortex_m_examine(struct target *target)
armv7m->arm.core_cache->num_regs = ARMV7M_NUM_CORE_REGS_NOFP;
}
if (i == 4 || i == 3) {
if ((i == 4 || i == 3) && !armv7m->stlink) {
/* Cortex-M3/M4 has 4096 bytes autoincrement range */
armv7m->debug_ap->tar_autoincr_block = (1 << 12);
}