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gdbstub: move breakpoint logic to accel ops

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As HW virtualization requires specific support to handle breakpoints
lets push out special casing out of the core gdbstub code and into
AccelOpsClass. This will make it easier to add other accelerator
support and reduces some of the stub shenanigans.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Message-Id: <20220929114231.583801-45-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée
2022-09-29 12:42:24 +01:00
parent 3b7a93880a
commit ae7467b1ac
14 changed files with 259 additions and 160 deletions
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62
gdbstub/user.c Normal file
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/*
* gdbstub user-mode helper routines.
*
* We know for user-mode we are using TCG so we can call stuff directly.
*
* Copyright (c) 2022 Linaro Ltd
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "exec/hwaddr.h"
#include "exec/gdbstub.h"
#include "hw/core/cpu.h"
#include "internals.h"
int gdb_breakpoint_insert(CPUState *cs, int type, hwaddr addr, hwaddr len)
{
CPUState *cpu;
int err = 0;
switch (type) {
case GDB_BREAKPOINT_SW:
case GDB_BREAKPOINT_HW:
CPU_FOREACH(cpu) {
err = cpu_breakpoint_insert(cpu, addr, BP_GDB, NULL);
if (err) {
break;
}
}
return err;
default:
/* user-mode doesn't support watchpoints */
return -ENOSYS;
}
}
int gdb_breakpoint_remove(CPUState *cs, int type, hwaddr addr, hwaddr len)
{
CPUState *cpu;
int err = 0;
switch (type) {
case GDB_BREAKPOINT_SW:
case GDB_BREAKPOINT_HW:
CPU_FOREACH(cpu) {
err = cpu_breakpoint_remove(cpu, addr, BP_GDB);
if (err) {
break;
}
}
return err;
default:
/* user-mode doesn't support watchpoints */
return -ENOSYS;
}
}
void gdb_breakpoint_remove_all(CPUState *cs)
{
cpu_breakpoint_remove_all(cs, BP_GDB);
}