(old) | htmldiff from- | (new) |
The DBGDTRRXint characteristics are:
Transfers data from an external debugger to the PE. For example, it is used by a debugger transferring commands and data to a debug target. See DBGDTR_EL0 for additional architectural mappings. It is a component of the Debug Communications Channel.
AArch32 System register DBGDTRRXint bits [31:0] are architecturally mapped to AArch64 System register DBGDTRRX_EL0[31:0] .
AArch32 System register DBGDTRRXint bits [31:0] are architecturally mapped to External register DBGDTRRX_EL0[31:0] .
This register is present only
when AArch32 is supported at any Exception level.
Otherwise, direct accesses to DBGDTRRXint are UNDEFINEDUNKNOWN.
DBGDTRRXint is a 32-bit register.
The DBGDTRRXint bit assignments are:
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Update DTRRX |
Update DTRRX.
Reads of this register:
If RXfull is set to 1, return the last value written to DTRRX.
If RXfull is set to 0, return an UNKNOWN value.
After the read, RXfull is cleared to 0.
For the full behavior of the Debug Communications Channel, see 'The Debug Communication Channel and Instruction Transfer Register'.
On a Cold reset, this field resets to an architecturally UNKNOWN value.
Data can be stored to memory from this register using STC.
Accesses to this register use the following encodings:
coproc | opc1 | CRn | CRm | opc2 |
---|---|---|---|---|
0b1110 | 0b000 | 0b0000 | 0b0101 | 0b000 |
if Halted() then
return DBGDTRRXint;
elsif PSTATE.EL == EL0 then
if !ELUsingAArch32(EL1) && MDSCR_EL1.TDCC == '1' then
if EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TGE == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
else
AArch64.AArch32SystemAccessTrap(EL1, 0x05);
elsif ELUsingAArch32(EL1) && DBGDSCRext.UDCCdis == '1' then
if EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TGE == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR.TGE == '1' then
AArch32.TakeHypTrapException(0x00);
else
UNDEFINED;
elsif EL2Enabled() && !ELUsingAArch32(EL2) && MDCR_EL2.TDCC == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HDCR.TDCC == '1' then
AArch32.TakeHypTrapException(0x05);
elsif EL2Enabled() && !ELUsingAArch32(EL2) && (HCR_EL2.TGE == '1' || MDCR_EL2.<TDE,TDA> != '00') then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
elsif EL2Enabled() && !ELUsingAArch32(EL2) && (HCR.TGE == '1' || HDCR.<TDE,TDA> != '00') then
AArch32.TakeHypTrapException(0x05);
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
elsif HaveEL(EL3) && ELUsingAArch32(EL3) && SDCR.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch32.TakeMonitorTrapException();
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDA == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
else
return DBGDTRRXint;
elsif PSTATE.EL == EL1 then
if EL2Enabled() && !ELUsingAArch32(EL2) && MDCR_EL2.TDCC == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HDCR.TDCC == '1' then
AArch32.TakeHypTrapException(0x05);
elsif EL2Enabled() && !ELUsingAArch32(EL2) && MDCR_EL2.<TDE,TDA> != '00' then
AArch64.AArch32SystemAccessTrap(EL2, 0x05);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HDCR.<TDE,TDA> != '00' then
AArch32.TakeHypTrapException(0x05);
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
elsif HaveEL(EL3) && ELUsingAArch32(EL3) && SDCR.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch32.TakeMonitorTrapException();
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDA == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
else
return DBGDTRRXint;
elsif PSTATE.EL == EL2 then
if HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
elsif HaveEL(EL3) && ELUsingAArch32(EL3) && SDCR.TDCC == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch32.TakeMonitorTrapException();
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && MDCR_EL3.TDA == '1' then
if Halted() && EDSCR.SDD == '1' then
UNDEFINED;
else
AArch64.AArch32SystemAccessTrap(EL3, 0x05);
else
return DBGDTRRXint;
elsif PSTATE.EL == EL3 then
if PSTATE.M != M32_Monitor && SDCR.TDCC == '1' then
AArch32.TakeMonitorTrapException();
else
return DBGDTRRXint;
0114/0704/2020 1520:5709; 80324f0b9997bede489cc15ad1565345720bcd2adff0d3e465311dd9ce541b6a1e1d6c05a0668645
Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.
(old) | htmldiff from- | (new) |