CodeScopeDevelopment ToolsOpenOCDarm11_add_debug_inst()

arm11_add_debug_inst() function

Queue a DR scan of the ITR register. Caller must have selected scan chain 4 (ITR), possibly using ITRSEL. Going through the TAP_DRUPDATE state writes ITR only if Ready was previously set. Only the Ready flag is readable by the scan. An instruction loaded into ITR is executed when going through the TAP_IDLE state only if Ready was previously set and the debug state is properly set up. Depending on the instruction, you may also need to ensure that the rDTR is ready before that Run-Test/Idle state.

Syntax

from arm11_dbgtap.c:242

static void arm11_add_debug_inst(struct arm11_common *arm11, uint32_t inst, uint8_t *flag, tap_state_t state);

Arguments

arm11

Target state variable.

inst

An ARM11 processor instruction/opcode.

flag

Optional parameter to retrieve the Ready flag; this address will be written when the JTAG chain is scanned.

state

The TAP state to enter after the DR scan.

References

Location	Referrer	Text
arm11_dbgtap.c:242		static void arm11_add_debug_inst(struct arm11_common *arm11,
arm11_dbgtap.c:387	arm11_run_instr_no_data()	arm11_add_debug_inst(arm11, *opcode++, NULL, TAP_IDLE);
arm11_dbgtap.c:393	arm11_run_instr_no_data()	arm11_add_debug_inst(arm11, 0, &flag, count ? TAP_IDLE : TAP_DRPAUSE);
arm11_dbgtap.c:457	arm11_run_instr_data_to_core()	arm11_add_debug_inst(arm11, opcode, NULL, TAP_DRPAUSE);
arm11_dbgtap.c:643	arm11_run_instr_data_to_core_noack()	arm11_add_debug_inst(arm11, opcode, NULL, TAP_DRPAUSE);
arm11_dbgtap.c:734	arm11_run_instr_data_from_core()	arm11_add_debug_inst(arm11, opcode, NULL, TAP_IDLE);