Refactor queries for hardware and software single stepping support in GDBServer.
Before this patch there was only one call: can_hardware_single_step. Its implementation was a check on breakpoint_reinsert_addr if NULL it assumed that the target could hardware single step. This patch prepares for the case where this is not true anymore. In order to improve software single stepping in GDBServer the breakpoint_reinsert_addr operation of targets that had a very simple software implementation used only for stepping over thread creation events will be removed. This will create a case where a target does not support hardware single step and has the operation breakpoint_reinsert_addr set to NULL, thus can_hardware_single_step needs to be implemented another way. A new target operation supports_hardware_single_step is introduced and is to return true if the target does support such a feature, support for the feature is manually hardcoded. Note that the hardware single step support was enabled as per the current behavior, I did not check if tile for example really has ptrace singlestep support but since the current implementation assumed it had, I kept it that way. No regressions on Ubuntu 14.04 on ARMv7 and x86. With gdbserver-{native,extended} / { -marm -mthumb } Compilation tested on: aarch64,arm,bfind,crisv32,m32r,ppc,s390,tic6x,tile, xtensa. Not tested : sh. gdb/gdbserver/ChangeLog: * linux-aarch64-low.c (aarch64_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-arm-low.c (arm_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-bfin-low.c (bfin_supports_hardware_single_step): New function. (struct linux_target_ops) <bfin_supports_hardware_single_step>: Initialize. * linux-crisv32-low.c (cris_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-low.c (can_hardware_single_step): Use supports_hardware_single_step. (can_software_single_step): New function. (start_step_over): Call can_software_single_step. (linux_supports_hardware_single_step): New function. (struct target_ops) <supports_software_single_step>: Initialize. * linux-low.h (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-m32r-low.c (m32r_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-ppc-low.c (ppc_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step> Initialize. * linux-s390-low.c (s390_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-sh-low.c (sh_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-tic6x-low.c (tic6x_supports_hardware_single_step): New function. (struct linux_target_ops) <tic6x_supports_hardware_single_step>: Initialize. * linux-tile-low.c (tile_supports_hardware_single_step): New function. (struct linux_target_ops) <tile_supports_hardware_single_step>: Initialize. * linux-x86-low.c (x86_supports_hardware_single_step) New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * linux-xtensa-low.c (xtensa_supports_hardware_single_step): New function. (struct linux_target_ops) <supports_hardware_single_step>: Initialize. * target.h (struct target_ops): <supports_software_single_step>: New field. (target_supports_software_single_step): New macro.
This commit is contained in:
parent
2d97cd356e
commit
7d00775ece
16 changed files with 355 additions and 6 deletions
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@ -1,3 +1,47 @@
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2015-11-30 Antoine Tremblay <antoine.tremblay@ericsson.com>
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* linux-aarch64-low.c (aarch64_supports_hardware_single_step):
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New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-arm-low.c (arm_supports_hardware_single_step): New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-bfin-low.c (bfin_supports_hardware_single_step): New function.
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(struct linux_target_ops) <bfin_supports_hardware_single_step>:
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Initialize.
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* linux-crisv32-low.c (cris_supports_hardware_single_step):
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New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-low.c (can_hardware_single_step): Use
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supports_hardware_single_step.
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(can_software_single_step): New function.
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(start_step_over): Call can_software_single_step.
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(linux_supports_hardware_single_step): New function.
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(struct target_ops) <supports_software_single_step>: Initialize.
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* linux-low.h (struct linux_target_ops)
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<supports_hardware_single_step>: Initialize.
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* linux-m32r-low.c (m32r_supports_hardware_single_step): New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-ppc-low.c (ppc_supports_hardware_single_step): New function.
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(struct linux_target_ops) <supports_hardware_single_step> Initialize.
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* linux-s390-low.c (s390_supports_hardware_single_step): New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-sh-low.c (sh_supports_hardware_single_step): New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-tic6x-low.c (tic6x_supports_hardware_single_step): New function.
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(struct linux_target_ops) <tic6x_supports_hardware_single_step>:
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Initialize.
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* linux-tile-low.c (tile_supports_hardware_single_step): New function.
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(struct linux_target_ops) <tile_supports_hardware_single_step>:
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Initialize.
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* linux-x86-low.c (x86_supports_hardware_single_step) New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* linux-xtensa-low.c (xtensa_supports_hardware_single_step):
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New function.
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(struct linux_target_ops) <supports_hardware_single_step>: Initialize.
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* target.h (struct target_ops): <supports_software_single_step>:
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New field.
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(target_supports_software_single_step): New macro.
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2015-11-30 Antoine Tremblay <antoine.tremblay@ericsson.com>
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2015-11-30 Antoine Tremblay <antoine.tremblay@ericsson.com>
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* linux-low.c (linux_wait_1): Fix pc advance condition.
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* linux-low.c (linux_wait_1): Fix pc advance condition.
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@ -2944,6 +2944,14 @@ aarch64_sw_breakpoint_from_kind (int kind, int *size)
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return aarch64_breakpoint;
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return aarch64_breakpoint;
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}
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}
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/* Support for hardware single step. */
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static int
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aarch64_supports_hardware_single_step (void)
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{
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return 1;
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}
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struct linux_target_ops the_low_target =
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struct linux_target_ops the_low_target =
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{
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{
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aarch64_arch_setup,
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aarch64_arch_setup,
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@ -2977,6 +2985,8 @@ struct linux_target_ops the_low_target =
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aarch64_emit_ops,
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aarch64_emit_ops,
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aarch64_get_min_fast_tracepoint_insn_len,
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aarch64_get_min_fast_tracepoint_insn_len,
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aarch64_supports_range_stepping,
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aarch64_supports_range_stepping,
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NULL, /* breakpoint_kind_from_current_state */
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aarch64_supports_hardware_single_step,
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};
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};
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void
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void
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@ -902,6 +902,14 @@ arm_arch_setup (void)
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have_ptrace_getregset = 0;
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have_ptrace_getregset = 0;
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}
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}
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/* Support for hardware single step. */
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static int
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arm_supports_hardware_single_step (void)
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{
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return 0;
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}
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/* Register sets without using PTRACE_GETREGSET. */
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/* Register sets without using PTRACE_GETREGSET. */
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static struct regset_info arm_regsets[] = {
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static struct regset_info arm_regsets[] = {
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@ -1058,7 +1066,8 @@ struct linux_target_ops the_low_target = {
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NULL, /* emit_ops */
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NULL, /* emit_ops */
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NULL, /* get_min_fast_tracepoint_insn_len */
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NULL, /* get_min_fast_tracepoint_insn_len */
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NULL, /* supports_range_stepping */
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NULL, /* supports_range_stepping */
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arm_breakpoint_kind_from_current_state
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arm_breakpoint_kind_from_current_state,
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arm_supports_hardware_single_step
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};
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};
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void
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void
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@ -105,6 +105,14 @@ bfin_arch_setup (void)
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current_process ()->tdesc = tdesc_bfin;
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current_process ()->tdesc = tdesc_bfin;
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}
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}
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/* Support for hardware single step. */
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static int
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bfin_supports_hardware_single_step (void)
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{
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return 1;
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}
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static struct usrregs_info bfin_usrregs_info =
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static struct usrregs_info bfin_usrregs_info =
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{
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{
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bfin_num_regs,
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bfin_num_regs,
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NULL, /* breakpoint_reinsert_addr */
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NULL, /* breakpoint_reinsert_addr */
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2,
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2,
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bfin_breakpoint_at,
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bfin_breakpoint_at,
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NULL, /* supports_z_point_type */
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NULL, /* insert_point */
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NULL, /* remove_point */
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NULL, /* stopped_by_watchpoint */
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NULL, /* stopped_data_address */
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NULL, /* collect_ptrace_register */
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NULL, /* supply_ptrace_register */
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NULL, /* siginfo_fixup */
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NULL, /* new_process */
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NULL, /* new_thread */
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NULL, /* new_fork */
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NULL, /* prepare_to_resume */
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NULL, /* process_qsupported */
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NULL, /* supports_tracepoints */
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NULL, /* get_thread_area */
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NULL, /* install_fast_tracepoint_jump_pad */
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NULL, /* emit_ops */
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NULL, /* get_min_fast_tracepoint_insn_len */
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NULL, /* supports_range_stepping */
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NULL, /* breakpoint_kind_from_current_state */
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bfin_supports_hardware_single_step,
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};
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};
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@ -388,6 +388,14 @@ cris_arch_setup (void)
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current_process ()->tdesc = tdesc_crisv32;
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current_process ()->tdesc = tdesc_crisv32;
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}
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}
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/* Support for hardware single step. */
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static int
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cris_supports_hardware_single_step (void)
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{
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return 1;
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}
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static struct regset_info cris_regsets[] = {
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static struct regset_info cris_regsets[] = {
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{ PTRACE_GETREGS, PTRACE_SETREGS, 0, cris_num_regs * 4,
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{ PTRACE_GETREGS, PTRACE_SETREGS, 0, cris_num_regs * 4,
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GENERAL_REGS, cris_fill_gregset, cris_store_gregset },
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GENERAL_REGS, cris_fill_gregset, cris_store_gregset },
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cris_remove_point,
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cris_remove_point,
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cris_stopped_by_watchpoint,
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cris_stopped_by_watchpoint,
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cris_stopped_data_address,
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cris_stopped_data_address,
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NULL, /* collect_ptrace_register */
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NULL, /* supply_ptrace_register */
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NULL, /* siginfo_fixup */
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NULL, /* new_process */
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NULL, /* new_thread */
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NULL, /* new_fork */
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NULL, /* prepare_to_resume */
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NULL, /* process_qsupported */
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NULL, /* supports_tracepoints */
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NULL, /* get_thread_area */
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NULL, /* install_fast_tracepoint_jump_pad */
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NULL, /* emit_ops */
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NULL, /* get_min_fast_tracepoint_insn_len */
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NULL, /* supports_range_stepping */
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NULL, /* breakpoint_kind_from_current_state */
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cris_supports_hardware_single_step,
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};
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};
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void
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void
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@ -269,13 +269,24 @@ static void complete_ongoing_step_over (void);
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being stepped. */
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being stepped. */
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ptid_t step_over_bkpt;
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ptid_t step_over_bkpt;
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/* True if the low target can hardware single-step. Such targets
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/* True if the low target can hardware single-step. */
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don't need a BREAKPOINT_REINSERT_ADDR callback. */
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static int
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static int
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can_hardware_single_step (void)
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can_hardware_single_step (void)
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{
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{
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return (the_low_target.breakpoint_reinsert_addr == NULL);
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if (the_low_target.supports_hardware_single_step != NULL)
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return the_low_target.supports_hardware_single_step ();
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else
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return 0;
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}
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/* True if the low target can software single-step. Such targets
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implement the BREAKPOINT_REINSERT_ADDR callback. */
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static int
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can_software_single_step (void)
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{
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return (the_low_target.breakpoint_reinsert_addr != NULL);
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}
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}
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/* True if the low target supports memory breakpoints. If so, we'll
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/* True if the low target supports memory breakpoints. If so, we'll
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{
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{
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step = 1;
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step = 1;
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}
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}
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else
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else if (can_software_single_step ())
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{
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{
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CORE_ADDR raddr = (*the_low_target.breakpoint_reinsert_addr) ();
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CORE_ADDR raddr = (*the_low_target.breakpoint_reinsert_addr) ();
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set_reinsert_breakpoint (raddr);
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set_reinsert_breakpoint (raddr);
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step = 0;
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step = 0;
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}
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}
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else
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{
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internal_error (__FILE__, __LINE__,
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"stepping is not implemented on this target");
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}
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current_thread = saved_thread;
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current_thread = saved_thread;
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return can_hardware_single_step ();
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return can_hardware_single_step ();
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}
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}
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static int
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linux_supports_software_single_step (void)
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{
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return can_software_single_step ();
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}
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static int
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static int
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linux_stopped_by_watchpoint (void)
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linux_stopped_by_watchpoint (void)
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{
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{
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linux_breakpoint_kind_from_pc,
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linux_breakpoint_kind_from_pc,
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linux_sw_breakpoint_from_kind,
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linux_sw_breakpoint_from_kind,
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linux_proc_tid_get_name,
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linux_proc_tid_get_name,
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linux_breakpoint_kind_from_current_state
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linux_breakpoint_kind_from_current_state,
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linux_supports_software_single_step
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};
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};
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static void
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static void
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/* See target.h. */
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/* See target.h. */
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int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
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int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
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/* See target.h. */
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int (*supports_hardware_single_step) (void);
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};
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};
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extern struct linux_target_ops the_low_target;
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extern struct linux_target_ops the_low_target;
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current_process ()->tdesc = tdesc_m32r;
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current_process ()->tdesc = tdesc_m32r;
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}
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}
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/* Support for hardware single step. */
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static int
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m32r_supports_hardware_single_step (void)
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{
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return 1;
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}
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static struct usrregs_info m32r_usrregs_info =
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static struct usrregs_info m32r_usrregs_info =
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{
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{
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m32r_num_regs,
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m32r_num_regs,
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NULL,
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NULL,
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0,
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0,
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m32r_breakpoint_at,
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m32r_breakpoint_at,
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NULL, /* supports_z_point_type */
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NULL, /* insert_point */
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NULL, /* remove_point */
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NULL, /* stopped_by_watchpoint */
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NULL, /* stopped_data_address */
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NULL, /* collect_ptrace_register */
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NULL, /* supply_ptrace_register */
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NULL, /* siginfo_fixup */
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NULL, /* new_process */
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NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
m32r_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -547,6 +547,14 @@ ppc_store_evrregset (struct regcache *regcache, const void *buf)
|
||||||
supply_register_by_name (regcache, "spefscr", ®set->spefscr);
|
supply_register_by_name (regcache, "spefscr", ®set->spefscr);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
ppc_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
static struct regset_info ppc_regsets[] = {
|
static struct regset_info ppc_regsets[] = {
|
||||||
/* List the extra register sets before GENERAL_REGS. That way we will
|
/* List the extra register sets before GENERAL_REGS. That way we will
|
||||||
fetch them every time, but still fall back to PTRACE_PEEKUSER for the
|
fetch them every time, but still fall back to PTRACE_PEEKUSER for the
|
||||||
|
@ -705,6 +713,20 @@ struct linux_target_ops the_low_target = {
|
||||||
NULL,
|
NULL,
|
||||||
ppc_collect_ptrace_register,
|
ppc_collect_ptrace_register,
|
||||||
ppc_supply_ptrace_register,
|
ppc_supply_ptrace_register,
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
ppc_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -609,6 +609,14 @@ s390_breakpoint_at (CORE_ADDR pc)
|
||||||
return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
|
return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
s390_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
static struct usrregs_info s390_usrregs_info =
|
static struct usrregs_info s390_usrregs_info =
|
||||||
{
|
{
|
||||||
s390_num_regs,
|
s390_num_regs,
|
||||||
|
@ -686,6 +694,20 @@ struct linux_target_ops the_low_target = {
|
||||||
NULL,
|
NULL,
|
||||||
s390_collect_ptrace_register,
|
s390_collect_ptrace_register,
|
||||||
s390_supply_ptrace_register,
|
s390_supply_ptrace_register,
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
s390_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -100,6 +100,14 @@ sh_breakpoint_at (CORE_ADDR where)
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
sh_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
/* Provide only a fill function for the general register set. ps_lgetregs
|
/* Provide only a fill function for the general register set. ps_lgetregs
|
||||||
will use this for NPTL support. */
|
will use this for NPTL support. */
|
||||||
|
|
||||||
|
@ -162,6 +170,27 @@ struct linux_target_ops the_low_target = {
|
||||||
NULL,
|
NULL,
|
||||||
0,
|
0,
|
||||||
sh_breakpoint_at,
|
sh_breakpoint_at,
|
||||||
|
NULL, /* supports_z_point_type */
|
||||||
|
NULL, /* insert_point */
|
||||||
|
NULL, /* remove_point */
|
||||||
|
NULL, /* stopped_by_watchpoint */
|
||||||
|
NULL, /* stopped_data_address */
|
||||||
|
NULL, /* collect_ptrace_register */
|
||||||
|
NULL, /* supply_ptrace_register */
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
sh_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -341,6 +341,14 @@ tic6x_arch_setup (void)
|
||||||
current_process ()->tdesc = tic6x_read_description ();
|
current_process ()->tdesc = tic6x_read_description ();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
tic6x_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
static struct regsets_info tic6x_regsets_info =
|
static struct regsets_info tic6x_regsets_info =
|
||||||
{
|
{
|
||||||
tic6x_regsets, /* regsets */
|
tic6x_regsets, /* regsets */
|
||||||
|
@ -380,6 +388,27 @@ struct linux_target_ops the_low_target = {
|
||||||
NULL,
|
NULL,
|
||||||
0,
|
0,
|
||||||
tic6x_breakpoint_at,
|
tic6x_breakpoint_at,
|
||||||
|
NULL, /* supports_z_point_type */
|
||||||
|
NULL, /* insert_point */
|
||||||
|
NULL, /* remove_point */
|
||||||
|
NULL, /* stopped_by_watchpoint */
|
||||||
|
NULL, /* stopped_data_address */
|
||||||
|
NULL, /* collect_ptrace_register */
|
||||||
|
NULL, /* supply_ptrace_register */
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
tic6x_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -181,6 +181,14 @@ tile_arch_setup (void)
|
||||||
current_process ()->tdesc = tdesc_tilegx;
|
current_process ()->tdesc = tdesc_tilegx;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
tile_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
struct linux_target_ops the_low_target =
|
struct linux_target_ops the_low_target =
|
||||||
{
|
{
|
||||||
|
@ -196,6 +204,27 @@ struct linux_target_ops the_low_target =
|
||||||
NULL,
|
NULL,
|
||||||
0,
|
0,
|
||||||
tile_breakpoint_at,
|
tile_breakpoint_at,
|
||||||
|
NULL, /* supports_z_point_type */
|
||||||
|
NULL, /* insert_point */
|
||||||
|
NULL, /* remove_point */
|
||||||
|
NULL, /* stopped_by_watchpoint */
|
||||||
|
NULL, /* stopped_data_address */
|
||||||
|
NULL, /* collect_ptrace_register */
|
||||||
|
NULL, /* supply_ptrace_register */
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
tile_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -3264,6 +3264,15 @@ x86_supports_range_stepping (void)
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Implementation of linux_target_ops method "supports_hardware_single_step".
|
||||||
|
*/
|
||||||
|
|
||||||
|
static int
|
||||||
|
x86_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
/* This is initialized assuming an amd64 target.
|
/* This is initialized assuming an amd64 target.
|
||||||
x86_arch_setup will correct it for i386 or amd64 targets. */
|
x86_arch_setup will correct it for i386 or amd64 targets. */
|
||||||
|
|
||||||
|
@ -3304,6 +3313,8 @@ struct linux_target_ops the_low_target =
|
||||||
x86_emit_ops,
|
x86_emit_ops,
|
||||||
x86_get_min_fast_tracepoint_insn_len,
|
x86_get_min_fast_tracepoint_insn_len,
|
||||||
x86_supports_range_stepping,
|
x86_supports_range_stepping,
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
x86_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
void
|
void
|
||||||
|
|
|
@ -229,6 +229,14 @@ xtensa_arch_setup (void)
|
||||||
current_process ()->tdesc = tdesc_xtensa;
|
current_process ()->tdesc = tdesc_xtensa;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Support for hardware single step. */
|
||||||
|
|
||||||
|
static int
|
||||||
|
xtensa_supports_hardware_single_step (void)
|
||||||
|
{
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
static const struct regs_info *
|
static const struct regs_info *
|
||||||
xtensa_regs_info (void)
|
xtensa_regs_info (void)
|
||||||
{
|
{
|
||||||
|
@ -248,6 +256,27 @@ struct linux_target_ops the_low_target = {
|
||||||
NULL,
|
NULL,
|
||||||
0,
|
0,
|
||||||
xtensa_breakpoint_at,
|
xtensa_breakpoint_at,
|
||||||
|
NULL, /* supports_z_point_type */
|
||||||
|
NULL, /* insert_point */
|
||||||
|
NULL, /* remove_point */
|
||||||
|
NULL, /* stopped_by_watchpoint */
|
||||||
|
NULL, /* stopped_data_address */
|
||||||
|
NULL, /* collect_ptrace_register */
|
||||||
|
NULL, /* supply_ptrace_register */
|
||||||
|
NULL, /* siginfo_fixup */
|
||||||
|
NULL, /* new_process */
|
||||||
|
NULL, /* new_thread */
|
||||||
|
NULL, /* new_fork */
|
||||||
|
NULL, /* prepare_to_resume */
|
||||||
|
NULL, /* process_qsupported */
|
||||||
|
NULL, /* supports_tracepoints */
|
||||||
|
NULL, /* get_thread_area */
|
||||||
|
NULL, /* install_fast_tracepoint_jump_pad */
|
||||||
|
NULL, /* emit_ops */
|
||||||
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
||||||
|
NULL, /* supports_range_stepping */
|
||||||
|
NULL, /* breakpoint_kind_from_current_state */
|
||||||
|
xtensa_supports_hardware_single_step,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -463,6 +463,9 @@ struct target_ops
|
||||||
PC. The PCPTR is adjusted to the real memory location in case a flag
|
PC. The PCPTR is adjusted to the real memory location in case a flag
|
||||||
(e.g., the Thumb bit on ARM) is present in the PC. */
|
(e.g., the Thumb bit on ARM) is present in the PC. */
|
||||||
int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
|
int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
|
||||||
|
|
||||||
|
/* Returns true if the target can software single step. */
|
||||||
|
int (*supports_software_single_step) (void);
|
||||||
};
|
};
|
||||||
|
|
||||||
extern struct target_ops *the_target;
|
extern struct target_ops *the_target;
|
||||||
|
@ -655,6 +658,10 @@ int kill_inferior (int);
|
||||||
? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
|
? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
|
||||||
: target_breakpoint_kind_from_pc (pcptr))
|
: target_breakpoint_kind_from_pc (pcptr))
|
||||||
|
|
||||||
|
#define target_supports_software_single_step() \
|
||||||
|
(the_target->supports_software_single_step ? \
|
||||||
|
(*the_target->supports_software_single_step) () : 0)
|
||||||
|
|
||||||
/* Start non-stop mode, returns 0 on success, -1 on failure. */
|
/* Start non-stop mode, returns 0 on success, -1 on failure. */
|
||||||
|
|
||||||
int start_non_stop (int nonstop);
|
int start_non_stop (int nonstop);
|
||||||
|
|
Loading…
Reference in a new issue