qemu/target-mips
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
..
Makefile.objs target-mips: Enable KVM support in build system 2014-06-18 16:59:37 +02:00
TODO target-mips: Change TODO file 2012-10-31 21:37:24 +01:00
cpu-qom.h target-mips: 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-mips: implement UserLocal Register 2014-06-18 18:10:47 +02:00
dsp_helper.c tcg: Invert the inclusion of helper.h 2014-05-28 09:33:54 -07:00
gdbstub.c cpu: Introduce CPUClass::gdb_{read,write}_register() 2013-07-27 00:04:17 +02:00
helper.c target-mips: Use cpu_exec_interrupt qom hook 2014-09-25 18:54:22 +01:00
helper.h tcg: Invert the inclusion of helper.h 2014-05-28 09:33:54 -07:00
kvm.c mips/kvm: Disable FPU on reset with KVM 2014-07-09 18:17:04 +02:00
kvm_mips.h target-mips: kvm: Add main KVM support for MIPS 2014-06-18 16:58:52 +02:00
lmi_helper.c tcg: Invert the inclusion of helper.h 2014-05-28 09:33:54 -07:00
machine.c target-mips: implement UserLocal Register 2014-06-18 18:10:47 +02:00
mips-defs.h target-mips: add CPU definition for MIPS32R5 2014-02-10 16:45:53 +01:00
op_helper.c target-mips: Ignore unassigned accesses with KVM 2014-08-07 15:09:48 +02:00
translate.c trace: [tcg] Include TCG-tracing header on all targets 2014-08-12 14:26:12 +01:00
translate_init.c target-mips: Avoid shifting left into sign bit 2014-03-27 19:22:49 +04:00