diff options
Diffstat (limited to 'src/target/arm.h')
| -rw-r--r-- | src/target/arm.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/target/arm.h b/src/target/arm.h index 988266e3..c72b1942 100644 --- a/src/target/arm.h +++ b/src/target/arm.h @@ -40,9 +40,17 @@ */ /** - * These numbers match the five low bits of the *PSR registers on + * Represent state of an ARM core. + * + * Most numbers match the five low bits of the *PSR registers on * "classic ARM" processors, which build on the ARMv4 processor * modes and register set. + * + * ARM_MODE_ANY is a magic value, often used as a wildcard. + * + * Only the microcontroller cores (ARMv6-M, ARMv7-M) support ARM_MODE_THREAD, + * ARM_MODE_USER_THREAD, and ARM_MODE_HANDLER. Those are the only modes + * they support. */ enum arm_mode { ARM_MODE_USR = 16, @@ -53,6 +61,11 @@ enum arm_mode { ARM_MODE_MON = 26, ARM_MODE_UND = 27, ARM_MODE_SYS = 31, + + ARM_MODE_THREAD, + ARM_MODE_USER_THREAD, + ARM_MODE_HANDLER, + ARM_MODE_ANY = -1 }; @@ -96,6 +109,8 @@ struct arm { * ARM_MODE_ANY indicates the standard set of 37 registers, * seen on for example ARM7TDMI cores. ARM_MODE_MON indicates three * more registers are shadowed, for "Secure Monitor" mode. + * ARM_MODE_THREAD indicates a microcontroller profile core, + * which only shadows SP. */ enum arm_mode core_type; |