X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Farmv7m.h;h=b6be1d22497e340ed542463a0df4e0b9efca4708;hp=17e3ff382f05b9bc0fafddb2ba6ace5ea097cf81;hb=ff5deeeeaa4f394931e3c5ccfb4cfd33beda0743;hpb=16e17ab1b33c8d40cc28bf621fc7995366a28a8a diff --git a/src/target/armv7m.h b/src/target/armv7m.h index 17e3ff382f..b6be1d2249 100644 --- a/src/target/armv7m.h +++ b/src/target/armv7m.h @@ -27,12 +27,19 @@ #define ARMV7M_COMMON_H #include "arm_adi_v5.h" +#include "arm.h" /* define for enabling armv7 gdb workarounds */ #if 1 #define ARMV7_GDB_HACKS #endif +#ifdef ARMV7_GDB_HACKS +extern uint8_t armv7m_gdb_dummy_cpsr_value[]; +extern struct reg armv7m_gdb_dummy_cpsr_reg; +#endif + + enum armv7m_mode { ARMV7M_MODE_THREAD = 0, @@ -41,7 +48,7 @@ enum armv7m_mode ARMV7M_MODE_ANY = -1 }; -extern char* armv7m_mode_strings[]; +extern char *armv7m_mode_strings[]; enum armv7m_regtype { @@ -50,170 +57,127 @@ enum armv7m_regtype ARMV7M_REGISTER_MEMMAP }; -extern char* armv7m_exception_strings[]; - -extern char *armv7m_exception_string(int number); +char *armv7m_exception_string(int number); /* offsets into armv7m core register cache */ enum { + /* for convenience, the first set of indices match + * the Cortex-M3 DCRSR selectors + */ + ARMV7M_R0, + ARMV7M_R1, + ARMV7M_R2, + ARMV7M_R3, + + ARMV7M_R4, + ARMV7M_R5, + ARMV7M_R6, + ARMV7M_R7, + + ARMV7M_R8, + ARMV7M_R9, + ARMV7M_R10, + ARMV7M_R11, + + ARMV7M_R12, + ARMV7M_R13, + ARMV7M_R14, ARMV7M_PC = 15, + ARMV7M_xPSR = 16, ARMV7M_MSP, ARMV7M_PSP, - /* FIXME the register numbers here are core-specific. Cortex-M3 - * through r1p1 only defines registers up to PSP; see ARM DDI 0337E. - * - * It's r2p0 (see ARM DDI 0337G) which defines the register that's - * called SPEC20 here, with four single-byte fields with CONTROL - * (highest byte), FAULTMASK, BASEPRI, and PRIMASK (lowest byte). - */ - ARMV7M_SPEC20 = 20, - ARMV7NUMCOREREGS + /* this next set of indices is arbitrary */ + ARMV7M_PRIMASK, + ARMV7M_BASEPRI, + ARMV7M_FAULTMASK, + ARMV7M_CONTROL, }; #define ARMV7M_COMMON_MAGIC 0x2A452A45 -typedef struct armv7m_common_s +struct armv7m_common { int common_magic; - reg_cache_t *core_cache; + struct reg_cache *core_cache; enum armv7m_mode core_mode; int exception_number; - swjdp_common_t swjdp_info; + struct swjdp_common swjdp_info; - bool has_spec20; + uint32_t demcr; /* Direct processor core register read and writes */ - int (*load_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, uint32_t num, uint32_t *value); - int (*store_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, uint32_t num, uint32_t value); + int (*load_core_reg_u32)(struct target *target, + enum armv7m_regtype type, uint32_t num, uint32_t *value); + int (*store_core_reg_u32)(struct target *target, + enum armv7m_regtype type, uint32_t num, uint32_t value); + /* register cache to processor synchronization */ - int (*read_core_reg)(struct target_s *target, int num); - int (*write_core_reg)(struct target_s *target, int num); + int (*read_core_reg)(struct target *target, unsigned num); + int (*write_core_reg)(struct target *target, unsigned num); + + int (*examine_debug_reason)(struct target *target); + void (*post_debug_entry)(struct target *target); - int (*examine_debug_reason)(target_t *target); - void (*pre_debug_entry)(target_t *target); - void (*post_debug_entry)(target_t *target); + void (*pre_restore_context)(struct target *target); + void (*post_restore_context)(struct target *target); +}; - void (*pre_restore_context)(target_t *target); - void (*post_restore_context)(target_t *target); +static inline struct armv7m_common * +target_to_armv7m(struct target *target) +{ + return target->arch_info; +} - void *arch_info; -} armv7m_common_t; +static inline bool is_armv7m(struct armv7m_common *armv7m) +{ + return armv7m->common_magic == ARMV7M_COMMON_MAGIC; +} -typedef struct armv7m_algorithm_s +struct armv7m_algorithm { int common_magic; enum armv7m_mode core_mode; -} armv7m_algorithm_t; +}; -typedef struct armv7m_core_reg_s +struct armv7m_core_reg { uint32_t num; enum armv7m_regtype type; - enum armv7m_mode mode; - target_t *target; - armv7m_common_t *armv7m_common; -} armv7m_core_reg_t; - -extern reg_cache_t *armv7m_build_reg_cache(target_t *target); -extern enum armv7m_mode armv7m_number_to_mode(int number); -extern int armv7m_mode_to_number(enum armv7m_mode mode); - -extern int armv7m_arch_state(struct target_s *target); -extern int armv7m_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size); - -extern int armv7m_register_commands(struct command_context_s *cmd_ctx); -extern int armv7m_init_arch_info(target_t *target, armv7m_common_t *armv7m); - -extern int armv7m_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info); - -extern int armv7m_invalidate_core_regs(target_t *target); - -extern int armv7m_restore_context(target_t *target); - -extern int armv7m_checksum_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* checksum); -extern int armv7m_blank_check_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* blank); - -/* Thumb mode instructions - */ - -/* Move to Register from Special Register (Thumb mode) 32 bit Thumb2 instruction - * Rd: destination register - * SYSm: source special register - */ -#define ARMV7M_T_MRS(Rd, SYSm) ((0xF3EF) | ((0x8000 | (Rd << 8) | SYSm) << 16)) - -/* Move from Register from Special Register (Thumb mode) 32 bit Thumb2 instruction - * Rd: source register - * SYSm: destination special register - */ -#define ARMV7M_T_MSR(SYSm, Rn) ((0xF380 | (Rn << 8)) | ((0x8800 | SYSm) << 16)) - -/* Change Processor State. The instruction modifies the PRIMASK and FAULTMASK - * special-purpose register values (Thumb mode) 16 bit Thumb2 instruction - * Rd: source register - * IF: - */ -#define I_FLAG 2 -#define F_FLAG 1 -#define ARMV7M_T_CPSID(IF) ((0xB660 | (1 << 8) | (IF&0x3)) | ((0xB660 | (1 << 8) | (IF&0x3)) << 16)) -#define ARMV7M_T_CPSIE(IF) ((0xB660 | (0 << 8) | (IF&0x3)) | ((0xB660 | (0 << 8) | (IF&0x3)) << 16)) - -/* Breakpoint (Thumb mode) v5 onwards - * Im: immediate value used by debugger - */ -#define ARMV7M_T_BKPT(Im) ((0xBE00 | Im) | ((0xBE00 | Im) << 16)) - -/* Store register (Thumb mode) - * Rd: source register - * Rn: base register - */ -#define ARMV7M_T_STR(Rd, Rn) ((0x6000 | Rd | (Rn << 3)) | ((0x6000 | Rd | (Rn << 3)) << 16)) - -/* Load register (Thumb state) - * Rd: destination register - * Rn: base register - */ -#define ARMV7M_T_LDR(Rd, Rn) ((0x6800 | (Rn << 3) | Rd) | ((0x6800 | (Rn << 3) | Rd) << 16)) - -/* Load multiple (Thumb state) - * Rn: base register - * List: for each bit in list: store register - */ -#define ARMV7M_T_LDMIA(Rn, List) ((0xc800 | (Rn << 8) | List) | ((0xc800 | (Rn << 8) | List) << 16)) - -/* Load register with PC relative addressing - * Rd: register to load - */ -#define ARMV7M_T_LDR_PCREL(Rd) ((0x4800 | (Rd << 8)) | ((0x4800 | (Rd << 8)) << 16)) - -/* Move hi register (Thumb mode) - * Rd: destination register - * Rm: source register - */ -#define ARMV7M_T_MOV(Rd, Rm) ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) | ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) << 16)) - -/* No operation (Thumb mode) - */ -#define ARMV7M_T_NOP (0x46c0 | (0x46c0 << 16)) - -/* Move immediate to register (Thumb state) - * Rd: destination register - * Im: 8-bit immediate value - */ -#define ARMV7M_T_MOV_IM(Rd, Im) ((0x2000 | (Rd << 8) | Im) | ((0x2000 | (Rd << 8) | Im) << 16)) - -/* Branch and Exchange - * Rm: register containing branch target - */ -#define ARMV7M_T_BX(Rm) ((0x4700 | (Rm << 3)) | ((0x4700 | (Rm << 3)) << 16)) - -/* Branch (Thumb state) - * Imm: Branch target - */ -#define ARMV7M_T_B(Imm) ((0xe000 | Imm) | ((0xe000 | Imm) << 16)) + struct target *target; + struct armv7m_common *armv7m_common; +}; + +struct reg_cache *armv7m_build_reg_cache(struct target *target); +enum armv7m_mode armv7m_number_to_mode(int number); +int armv7m_mode_to_number(enum armv7m_mode mode); + +int armv7m_arch_state(struct target *target); +int armv7m_get_gdb_reg_list(struct target *target, + struct reg **reg_list[], int *reg_list_size); + +int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m); + +int armv7m_run_algorithm(struct target *target, + int num_mem_params, struct mem_param *mem_params, + int num_reg_params, struct reg_param *reg_params, + uint32_t entry_point, uint32_t exit_point, + int timeout_ms, void *arch_info); + +int armv7m_invalidate_core_regs(struct target *target); + +int armv7m_restore_context(struct target *target); + +int armv7m_checksum_memory(struct target *target, + uint32_t address, uint32_t count, uint32_t* checksum); +int armv7m_blank_check_memory(struct target *target, + uint32_t address, uint32_t count, uint32_t* blank); + +int armv7m_maybe_skip_bkpt_inst(struct target *target, bool *inst_found); + +extern const struct command_registration armv7m_command_handlers[]; #endif /* ARMV7M_H */