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target/cortex_m: add Cortex-M part number getter 

The getter checks the magic numbers in arch_info to detect eventual
type mismatch.

Change-Id: I61134b05310a97ae9831517d0516c7b4240d35a5
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6751
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
This commit is contained in:
Tomas Vanek 2021-11-25 06:13:31 +01:00
parent e4ba76a003
commit b53f5c2571
1 changed files with 18 additions and 0 deletions
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18
src/target/cortex_m.h
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@ -46,6 +46,7 @@
#define ARM_CPUID_PARTNO_MASK (0xFFF << ARM_CPUID_PARTNO_POS)
enum cortex_m_partno {
CORTEX_M_PARTNO_INVALID,
CORTEX_M0_PARTNO = 0xC20,
CORTEX_M1_PARTNO = 0xC21,
CORTEX_M3_PARTNO = 0xC23,
@ -294,6 +295,23 @@ target_to_cortex_m_safe(struct target *target)
return cortex_m;
}
/**
* @returns cached value of Cortex-M part number
* or CORTEX_M_PARTNO_INVALID if the magic number does not match
* or core_info is not initialised.
*/
static inline enum cortex_m_partno cortex_m_get_partno_safe(struct target *target)
{
struct cortex_m_common *cortex_m = target_to_cortex_m_safe(target);
if (!cortex_m)
return CORTEX_M_PARTNO_INVALID;
if (!cortex_m->core_info)
return CORTEX_M_PARTNO_INVALID;
return cortex_m->core_info->partno;
}
int cortex_m_examine(struct target *target);
int cortex_m_set_breakpoint(struct target *target, struct breakpoint *breakpoint);
int cortex_m_unset_breakpoint(struct target *target, struct breakpoint *breakpoint);