qemu/target-arm
Peter Maydell 2472b6c07b gdbstub: Allow target CPUs to specify watchpoint STOP_BEFORE_ACCESS flag
GDB assumes that watchpoint set via the gdbstub remote protocol will
behave in the same way as hardware watchpoints for the target. In
particular, whether the CPU stops with the PC before or after the insn
which triggers the watchpoint is target dependent. Allow guest CPU
code to specify which behaviour to use. This fixes a bug where with
guest CPUs which stop before the accessing insn GDB would manually
step forward over what it thought was the insn and end up one insn
further forward than it should be.

We set this flag for the CPU architectures which set
gdbarch_have_nonsteppable_watchpoint in gdb 7.7:
ARM, CRIS, LM32, MIPS and Xtensa.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Michael Walle <michael@walle.cc> (for lm32)
Message-id: 1410545057-14014-1-git-send-email-peter.maydell@linaro.org
2014-10-06 14:25:43 +01:00
..
arm-semi.c cpu: Move opaque field from CPU_COMMON to CPUState 2014-03-13 19:20:47 +01:00
arm_ldst.h softmmu: introduce cpu_ldst.h 2014-06-05 16:10:33 +02:00
cpu-qom.h target-arm: Use cpu_exec_interrupt qom hook 2014-09-25 18:54:22 +01:00
cpu.c gdbstub: Allow target CPUs to specify watchpoint STOP_BEFORE_ACCESS flag 2014-10-06 14:25:43 +01:00
cpu.h target-arm: Add support for VIRQ and VFIQ 2014-09-29 18:48:51 +01:00
cpu64.c target-arm: Use cpu_exec_interrupt qom hook 2014-09-25 18:54:22 +01:00
crypto_helper.c target-arm: Use Common Tables in AES Instructions 2014-06-16 13:24:33 +02:00
gdbstub.c cpu: Introduce CPUClass::gdb_{read,write}_register() 2013-07-27 00:04:17 +02:00
gdbstub64.c target-arm/gdbstub64.c: remove useless 'break' statement. 2014-04-17 21:34:06 +01:00
helper-a64.c target-arm: Add support for VIRQ and VFIQ 2014-09-29 18:48:51 +01:00
helper-a64.h target-arm: A64: Implement CRC instructions 2014-06-09 16:06:12 +01:00
helper.c target-arm: Add support for VIRQ and VFIQ 2014-09-29 18:48:51 +01:00
helper.h target-arm: A64: Emulate the SMC insn 2014-09-29 18:48:50 +01:00
internals.h target-arm: Add support for VIRQ and VFIQ 2014-09-29 18:48:51 +01:00
iwmmxt_helper.c target-arm: Delete unused iwmmxt_msadb helper 2014-06-09 16:06:12 +01:00
kvm-consts.h arm/virt: Use PSCI v0.2 function IDs in the DT when KVM uses PSCI v0.2 2014-08-19 19:02:25 +01:00
kvm-stub.c target-arm: Initialize cpreg list from KVM when using KVM 2013-06-25 18:16:10 +01:00
kvm.c target-arm: Common kvm_arm_vcpu_init() for KVM ARM and KVM ARM64 2014-06-19 18:33:02 +01:00
kvm32.c target-arm: Implement vCPU reset via KVM_ARM_VCPU_INIT for 32-bit CPUs 2014-07-08 13:05:11 +01:00
kvm64.c target-arm: A64: Break out aarch64_save/restore_sp 2014-08-04 14:41:54 +01:00
kvm_arm.h target-arm: Common kvm_arm_vcpu_init() for KVM ARM and KVM ARM64 2014-06-19 18:33:02 +01:00
machine.c target-arm: Implement setting guest breakpoints 2014-09-29 18:48:46 +01:00
Makefile.objs target-arm: A64: add stubs for a64 specific helpers 2013-12-17 19:42:32 +00:00
neon_helper.c target-arm: add support for v8 VMULL.P64 instruction 2014-06-09 16:06:11 +01:00
op_addsub.h Correct spelling of licensed 2011-07-23 11:26:12 -05:00
op_helper.c target-arm: A64: Emulate the SMC insn 2014-09-29 18:48:50 +01:00
translate-a64.c target-arm: A64: Emulate the SMC insn 2014-09-29 18:48:50 +01:00
translate.c target-arm: Don't handle c15_cpar changes via tb_flush() 2014-09-29 18:48:48 +01:00
translate.h target-arm: Don't handle c15_cpar changes via tb_flush() 2014-09-29 18:48:48 +01:00