binutils-gdb/gdbserver/linux-s390-tdesc.h

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gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
/* Low level support for s390, shared between gdbserver and IPA.
Copyright (C) 2016-2022 Free Software Foundation, Inc.
gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
Normalize include guards in gdb While working on my other scripts to deal with gdb headers, I noticed that some files were missing include guards. I wrote a script to add the missing ones, but found that using the obvious names for the guards ran into clashes -- for example, gdb/nat/linux-nat.h used "LINUX_NAT_H", but this was also the script's choice for gdb/linux-nat.h. So, I changed the script to normalize all include guards in gdb. This patch is the result. As usual the script is available here: https://github.com/tromey/gdb-refactoring-scripts Tested by rebuilding; I also ran it through "Fedora-x86_64-m64" on the buildbot. gdb/ChangeLog 2019-02-07 Tom Tromey <tom@tromey.com> * yy-remap.h: Add include guard. * xtensa-tdep.h: Add include guard. * xcoffread.h: Rename include guard. * varobj-iter.h: Add include guard. * tui/tui.h: Rename include guard. * tui/tui-winsource.h: Rename include guard. * tui/tui-wingeneral.h: Rename include guard. * tui/tui-windata.h: Rename include guard. * tui/tui-win.h: Rename include guard. * tui/tui-stack.h: Rename include guard. * tui/tui-source.h: Rename include guard. * tui/tui-regs.h: Rename include guard. * tui/tui-out.h: Rename include guard. * tui/tui-layout.h: Rename include guard. * tui/tui-io.h: Rename include guard. * tui/tui-hooks.h: Rename include guard. * tui/tui-file.h: Rename include guard. * tui/tui-disasm.h: Rename include guard. * tui/tui-data.h: Rename include guard. * tui/tui-command.h: Rename include guard. * tic6x-tdep.h: Add include guard. * target/waitstatus.h: Rename include guard. * target/wait.h: Rename include guard. * target/target.h: Rename include guard. * target/resume.h: Rename include guard. * target-float.h: Rename include guard. * stabsread.h: Add include guard. * rs6000-tdep.h: Add include guard. * riscv-fbsd-tdep.h: Add include guard. * regformats/regdef.h: Rename include guard. * record.h: Rename include guard. * python/python.h: Rename include guard. * python/python-internal.h: Rename include guard. * python/py-stopevent.h: Rename include guard. * python/py-ref.h: Rename include guard. * python/py-record.h: Rename include guard. * python/py-record-full.h: Rename include guard. * python/py-record-btrace.h: Rename include guard. * python/py-instruction.h: Rename include guard. * python/py-events.h: Rename include guard. * python/py-event.h: Rename include guard. * procfs.h: Add include guard. * proc-utils.h: Add include guard. * p-lang.h: Add include guard. * or1k-tdep.h: Rename include guard. * observable.h: Rename include guard. * nto-tdep.h: Rename include guard. * nat/x86-linux.h: Rename include guard. * nat/x86-linux-dregs.h: Rename include guard. * nat/x86-gcc-cpuid.h: Add include guard. * nat/x86-dregs.h: Rename include guard. * nat/x86-cpuid.h: Rename include guard. * nat/ppc-linux.h: Rename include guard. * nat/mips-linux-watch.h: Rename include guard. * nat/linux-waitpid.h: Rename include guard. * nat/linux-ptrace.h: Rename include guard. * nat/linux-procfs.h: Rename include guard. * nat/linux-osdata.h: Rename include guard. * nat/linux-nat.h: Rename include guard. * nat/linux-namespaces.h: Rename include guard. * nat/linux-btrace.h: Rename include guard. * nat/glibc_thread_db.h: Rename include guard. * nat/gdb_thread_db.h: Rename include guard. * nat/gdb_ptrace.h: Rename include guard. * nat/fork-inferior.h: Rename include guard. * nat/amd64-linux-siginfo.h: Rename include guard. * nat/aarch64-sve-linux-sigcontext.h: Rename include guard. * nat/aarch64-sve-linux-ptrace.h: Rename include guard. * nat/aarch64-linux.h: Rename include guard. * nat/aarch64-linux-hw-point.h: Rename include guard. * mn10300-tdep.h: Add include guard. * mips-linux-tdep.h: Add include guard. * mi/mi-parse.h: Rename include guard. * mi/mi-out.h: Rename include guard. * mi/mi-main.h: Rename include guard. * mi/mi-interp.h: Rename include guard. * mi/mi-getopt.h: Rename include guard. * mi/mi-console.h: Rename include guard. * mi/mi-common.h: Rename include guard. * mi/mi-cmds.h: Rename include guard. * mi/mi-cmd-break.h: Rename include guard. * m2-lang.h: Add include guard. * location.h: Rename include guard. * linux-record.h: Rename include guard. * linux-nat.h: Add include guard. * linux-fork.h: Add include guard. * i386-darwin-tdep.h: Rename include guard. * hppa-linux-offsets.h: Add include guard. * guile/guile.h: Rename include guard. * guile/guile-internal.h: Rename include guard. * gnu-nat.h: Rename include guard. * gdb-stabs.h: Rename include guard. * frv-tdep.h: Add include guard. * f-lang.h: Add include guard. * event-loop.h: Add include guard. * darwin-nat.h: Rename include guard. * cp-abi.h: Rename include guard. * config/sparc/nm-sol2.h: Rename include guard. * config/nm-nto.h: Rename include guard. * config/nm-linux.h: Add include guard. * config/i386/nm-i386gnu.h: Rename include guard. * config/djgpp/nl_types.h: Rename include guard. * config/djgpp/langinfo.h: Rename include guard. * compile/gcc-cp-plugin.h: Add include guard. * compile/gcc-c-plugin.h: Add include guard. * compile/compile.h: Rename include guard. * compile/compile-object-run.h: Rename include guard. * compile/compile-object-load.h: Rename include guard. * compile/compile-internal.h: Rename include guard. * compile/compile-cplus.h: Rename include guard. * compile/compile-c.h: Rename include guard. * common/xml-utils.h: Rename include guard. * common/x86-xstate.h: Rename include guard. * common/version.h: Rename include guard. * common/vec.h: Rename include guard. * common/tdesc.h: Rename include guard. * common/selftest.h: Rename include guard. * common/scoped_restore.h: Rename include guard. * common/scoped_mmap.h: Rename include guard. * common/scoped_fd.h: Rename include guard. * common/safe-iterator.h: Rename include guard. * common/run-time-clock.h: Rename include guard. * common/refcounted-object.h: Rename include guard. * common/queue.h: Rename include guard. * common/ptid.h: Rename include guard. * common/print-utils.h: Rename include guard. * common/preprocessor.h: Rename include guard. * common/pathstuff.h: Rename include guard. * common/observable.h: Rename include guard. * common/netstuff.h: Rename include guard. * common/job-control.h: Rename include guard. * common/host-defs.h: Rename include guard. * common/gdb_wait.h: Rename include guard. * common/gdb_vecs.h: Rename include guard. * common/gdb_unlinker.h: Rename include guard. * common/gdb_unique_ptr.h: Rename include guard. * common/gdb_tilde_expand.h: Rename include guard. * common/gdb_sys_time.h: Rename include guard. * common/gdb_string_view.h: Rename include guard. * common/gdb_splay_tree.h: Rename include guard. * common/gdb_setjmp.h: Rename include guard. * common/gdb_ref_ptr.h: Rename include guard. * common/gdb_optional.h: Rename include guard. * common/gdb_locale.h: Rename include guard. * common/gdb_assert.h: Rename include guard. * common/filtered-iterator.h: Rename include guard. * common/filestuff.h: Rename include guard. * common/fileio.h: Rename include guard. * common/environ.h: Rename include guard. * common/common-utils.h: Rename include guard. * common/common-types.h: Rename include guard. * common/common-regcache.h: Rename include guard. * common/common-inferior.h: Rename include guard. * common/common-gdbthread.h: Rename include guard. * common/common-exceptions.h: Rename include guard. * common/common-defs.h: Rename include guard. * common/common-debug.h: Rename include guard. * common/cleanups.h: Rename include guard. * common/buffer.h: Rename include guard. * common/btrace-common.h: Rename include guard. * common/break-common.h: Rename include guard. * cli/cli-utils.h: Rename include guard. * cli/cli-style.h: Rename include guard. * cli/cli-setshow.h: Rename include guard. * cli/cli-script.h: Rename include guard. * cli/cli-interp.h: Rename include guard. * cli/cli-decode.h: Rename include guard. * cli/cli-cmds.h: Rename include guard. * charset-list.h: Add include guard. * buildsym-legacy.h: Rename include guard. * bfin-tdep.h: Add include guard. * ax.h: Rename include guard. * arm-linux-tdep.h: Add include guard. * arm-fbsd-tdep.h: Add include guard. * arch/xtensa.h: Rename include guard. * arch/tic6x.h: Add include guard. * arch/i386.h: Add include guard. * arch/arm.h: Rename include guard. * arch/arm-linux.h: Rename include guard. * arch/arm-get-next-pcs.h: Rename include guard. * arch/amd64.h: Add include guard. * arch/aarch64-insn.h: Rename include guard. * arch-utils.h: Rename include guard. * annotate.h: Add include guard. * amd64-darwin-tdep.h: Rename include guard. * aarch64-linux-tdep.h: Add include guard. * aarch64-fbsd-tdep.h: Add include guard. * aarch32-linux-nat.h: Add include guard. gdb/gdbserver/ChangeLog 2019-02-07 Tom Tromey <tom@tromey.com> * x86-tdesc.h: Rename include guard. * x86-low.h: Add include guard. * wincecompat.h: Rename include guard. * win32-low.h: Add include guard. * utils.h: Rename include guard. * tracepoint.h: Rename include guard. * tdesc.h: Rename include guard. * target.h: Rename include guard. * server.h: Rename include guard. * remote-utils.h: Rename include guard. * regcache.h: Rename include guard. * nto-low.h: Rename include guard. * notif.h: Add include guard. * mem-break.h: Rename include guard. * lynx-low.h: Add include guard. * linux-x86-tdesc.h: Add include guard. * linux-s390-tdesc.h: Add include guard. * linux-ppc-tdesc-init.h: Add include guard. * linux-low.h: Add include guard. * linux-aarch64-tdesc.h: Add include guard. * linux-aarch32-low.h: Add include guard. * inferiors.h: Rename include guard. * i387-fp.h: Rename include guard. * hostio.h: Rename include guard. * gdbthread.h: Rename include guard. * gdb_proc_service.h: Rename include guard. * event-loop.h: Rename include guard. * dll.h: Rename include guard. * debug.h: Rename include guard. * ax.h: Rename include guard.
2019-01-28 03:51:36 +08:00
#ifndef GDBSERVER_LINUX_S390_TDESC_H
#define GDBSERVER_LINUX_S390_TDESC_H
gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
/* Note: since IPA obviously knows what ABI it's running on (s390 vs s390x),
it's sufficient to pass only the register set here. This, together with
the ABI known at IPA compile time, maps to a tdesc. */
enum s390_linux_tdesc {
S390_TDESC_32,
S390_TDESC_32V1,
S390_TDESC_32V2,
S390_TDESC_64,
S390_TDESC_64V1,
S390_TDESC_64V2,
S390_TDESC_TE,
S390_TDESC_VX,
S390_TDESC_TEVX,
S390_TDESC_GS,
gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
};
#ifdef __s390x__
/* Defined in auto-generated file s390x-linux64.c. */
void init_registers_s390x_linux64 (void);
extern const struct target_desc *tdesc_s390x_linux64;
/* Defined in auto-generated file s390x-linux64v1.c. */
void init_registers_s390x_linux64v1 (void);
extern const struct target_desc *tdesc_s390x_linux64v1;
/* Defined in auto-generated file s390x-linux64v2.c. */
void init_registers_s390x_linux64v2 (void);
extern const struct target_desc *tdesc_s390x_linux64v2;
/* Defined in auto-generated file s390x-te-linux64.c. */
void init_registers_s390x_te_linux64 (void);
extern const struct target_desc *tdesc_s390x_te_linux64;
/* Defined in auto-generated file s390x-vx-linux64.c. */
void init_registers_s390x_vx_linux64 (void);
extern const struct target_desc *tdesc_s390x_vx_linux64;
/* Defined in auto-generated file s390x-tevx-linux64.c. */
void init_registers_s390x_tevx_linux64 (void);
extern const struct target_desc *tdesc_s390x_tevx_linux64;
/* Defined in auto-generated file s390x-gs-linux64.c. */
void init_registers_s390x_gs_linux64 (void);
extern const struct target_desc *tdesc_s390x_gs_linux64;
gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
#endif
#if !defined __s390x__ || !defined IN_PROCESS_AGENT
/* Defined in auto-generated file s390-linux32.c. */
void init_registers_s390_linux32 (void);
extern const struct target_desc *tdesc_s390_linux32;
/* Defined in auto-generated file s390-linux32v1.c. */
void init_registers_s390_linux32v1 (void);
extern const struct target_desc *tdesc_s390_linux32v1;
/* Defined in auto-generated file s390-linux32v2.c. */
void init_registers_s390_linux32v2 (void);
extern const struct target_desc *tdesc_s390_linux32v2;
/* Defined in auto-generated file s390-linux64.c. */
void init_registers_s390_linux64 (void);
extern const struct target_desc *tdesc_s390_linux64;
/* Defined in auto-generated file s390-linux64v1.c. */
void init_registers_s390_linux64v1 (void);
extern const struct target_desc *tdesc_s390_linux64v1;
/* Defined in auto-generated file s390-linux64v2.c. */
void init_registers_s390_linux64v2 (void);
extern const struct target_desc *tdesc_s390_linux64v2;
/* Defined in auto-generated file s390-te-linux64.c. */
void init_registers_s390_te_linux64 (void);
extern const struct target_desc *tdesc_s390_te_linux64;
/* Defined in auto-generated file s390-vx-linux64.c. */
void init_registers_s390_vx_linux64 (void);
extern const struct target_desc *tdesc_s390_vx_linux64;
/* Defined in auto-generated file s390-tevx-linux64.c. */
void init_registers_s390_tevx_linux64 (void);
extern const struct target_desc *tdesc_s390_tevx_linux64;
/* Defined in auto-generated file s390-gs-linux64.c. */
void init_registers_s390_gs_linux64 (void);
extern const struct target_desc *tdesc_s390_gs_linux64;
gdbserver/s390: Add fast tracepoint support. Fast tracepoints will only work on 6-byte intructions, and assume at least a z900 CPU. s390 also has 4-byte jump instructions, which also work on pre-z900, but their range is limitted to +-64kiB, which is not very useful (and wouldn't work at all with current jump pad allocation). There's a little problem with s390_relocate_instruction function: it converts BRAS/BRASL instructions to LARL of the return address + JG to the target address. On 31-bit, this sets the high bit of the target register to 0, while BRAS/BRASL would set it to 1. While this is not a problem when the result is only used to address memory, it could possibly break something that expects to compare such addresses for equality without first masking the bit off. In particular, I'm not sure whether leaving the return address high bit unset is ABI-compliant (could confuse some unwinder?). If that's a problem, it could be fixed by handling it in the jump pad (since at that point we can just modify the GPRs in the save area without having to worry about preserving CCs and only having that one GPR to work with - I'm not sure if it's even possible to set the high bit with such constraints). gdb/gdbserver/ChangeLog: PR 18377 * Makefile.in: Add s390 IPA files. * configure.srv: Build IPA for s390. * linux-s390-ipa.c: New file. * linux-s390-low.c: New includes - inttypes.h and linux-s390-tdesc.h. (init_registers_s390_linux32): Move declaration to linux-s390-tdesc.h. (tdesc_s390_linux32): Likewise. (init_registers_s390_linux32v1): Likewise. (tdesc_s390_linux32v1): Likewise. (init_registers_s390_linux32v2): Likewise. (tdesc_s390_linux32v2): Likewise. (init_registers_s390_linux64): Likewise. (tdesc_s390_linux64): Likewise. (init_registers_s390_linux64v1): Likewise. (tdesc_s390_linux64v1): Likewise. (init_registers_s390_linux64v2): Likewise. (tdesc_s390_linux64v2): Likewise. (init_registers_s390_te_linux64): Likewise. (tdesc_s390_te_linux64): Likewise. (init_registers_s390_vx_linux64): Likewise. (tdesc_s390_vx_linux64): Likewise. (init_registers_s390_tevx_linux64): Likewise. (tdesc_s390_tevx_linux64): Likewise. (init_registers_s390x_linux64): Likewise. (tdesc_s390x_linux64): Likewise. (init_registers_s390x_linux64v1): Likewise. (tdesc_s390x_linux64v1): Likewise. (init_registers_s390x_linux64v2): Likewise. (tdesc_s390x_linux64v2): Likewise. (init_registers_s390x_te_linux64): Likewise. (tdesc_s390x_te_linux64): Likewise. (init_registers_s390x_vx_linux64): Likewise. (tdesc_s390x_vx_linux64): Likewise. (init_registers_s390x_tevx_linux64): Likewise. (tdesc_s390x_tevx_linux64): Likewise. (have_hwcap_s390_vx): New static variable. (s390_arch_setup): Fill have_hwcap_s390_vx. (s390_get_thread_area): New function. (s390_ft_entry_gpr_esa): New const. (s390_ft_entry_gpr_zarch): New const. (s390_ft_entry_misc): New const. (s390_ft_entry_fr): New const. (s390_ft_entry_vr): New const. (s390_ft_main_31): New const. (s390_ft_main_64): New const. (s390_ft_exit_fr): New const. (s390_ft_exit_vr): New const. (s390_ft_exit_misc): New const. (s390_ft_exit_gpr_esa): New const. (s390_ft_exit_gpr_zarch): New const. (append_insns): New function. (s390_relocate_instruction): New function. (s390_install_fast_tracepoint_jump_pad): New function. (s390_get_min_fast_tracepoint_insn_len): New function. (s390_get_ipa_tdesc_idx): New function. (struct linux_target_ops): Wire in the above functions. (initialize_low_arch) [!__s390x__]: Don't initialize s390x tdescs. * linux-s390-tdesc.h: New file.
2016-01-18 05:59:06 +08:00
#endif
Normalize include guards in gdb While working on my other scripts to deal with gdb headers, I noticed that some files were missing include guards. I wrote a script to add the missing ones, but found that using the obvious names for the guards ran into clashes -- for example, gdb/nat/linux-nat.h used "LINUX_NAT_H", but this was also the script's choice for gdb/linux-nat.h. So, I changed the script to normalize all include guards in gdb. This patch is the result. As usual the script is available here: https://github.com/tromey/gdb-refactoring-scripts Tested by rebuilding; I also ran it through "Fedora-x86_64-m64" on the buildbot. gdb/ChangeLog 2019-02-07 Tom Tromey <tom@tromey.com> * yy-remap.h: Add include guard. * xtensa-tdep.h: Add include guard. * xcoffread.h: Rename include guard. * varobj-iter.h: Add include guard. * tui/tui.h: Rename include guard. * tui/tui-winsource.h: Rename include guard. * tui/tui-wingeneral.h: Rename include guard. * tui/tui-windata.h: Rename include guard. * tui/tui-win.h: Rename include guard. * tui/tui-stack.h: Rename include guard. * tui/tui-source.h: Rename include guard. * tui/tui-regs.h: Rename include guard. * tui/tui-out.h: Rename include guard. * tui/tui-layout.h: Rename include guard. * tui/tui-io.h: Rename include guard. * tui/tui-hooks.h: Rename include guard. * tui/tui-file.h: Rename include guard. * tui/tui-disasm.h: Rename include guard. * tui/tui-data.h: Rename include guard. * tui/tui-command.h: Rename include guard. * tic6x-tdep.h: Add include guard. * target/waitstatus.h: Rename include guard. * target/wait.h: Rename include guard. * target/target.h: Rename include guard. * target/resume.h: Rename include guard. * target-float.h: Rename include guard. * stabsread.h: Add include guard. * rs6000-tdep.h: Add include guard. * riscv-fbsd-tdep.h: Add include guard. * regformats/regdef.h: Rename include guard. * record.h: Rename include guard. * python/python.h: Rename include guard. * python/python-internal.h: Rename include guard. * python/py-stopevent.h: Rename include guard. * python/py-ref.h: Rename include guard. * python/py-record.h: Rename include guard. * python/py-record-full.h: Rename include guard. * python/py-record-btrace.h: Rename include guard. * python/py-instruction.h: Rename include guard. * python/py-events.h: Rename include guard. * python/py-event.h: Rename include guard. * procfs.h: Add include guard. * proc-utils.h: Add include guard. * p-lang.h: Add include guard. * or1k-tdep.h: Rename include guard. * observable.h: Rename include guard. * nto-tdep.h: Rename include guard. * nat/x86-linux.h: Rename include guard. * nat/x86-linux-dregs.h: Rename include guard. * nat/x86-gcc-cpuid.h: Add include guard. * nat/x86-dregs.h: Rename include guard. * nat/x86-cpuid.h: Rename include guard. * nat/ppc-linux.h: Rename include guard. * nat/mips-linux-watch.h: Rename include guard. * nat/linux-waitpid.h: Rename include guard. * nat/linux-ptrace.h: Rename include guard. * nat/linux-procfs.h: Rename include guard. * nat/linux-osdata.h: Rename include guard. * nat/linux-nat.h: Rename include guard. * nat/linux-namespaces.h: Rename include guard. * nat/linux-btrace.h: Rename include guard. * nat/glibc_thread_db.h: Rename include guard. * nat/gdb_thread_db.h: Rename include guard. * nat/gdb_ptrace.h: Rename include guard. * nat/fork-inferior.h: Rename include guard. * nat/amd64-linux-siginfo.h: Rename include guard. * nat/aarch64-sve-linux-sigcontext.h: Rename include guard. * nat/aarch64-sve-linux-ptrace.h: Rename include guard. * nat/aarch64-linux.h: Rename include guard. * nat/aarch64-linux-hw-point.h: Rename include guard. * mn10300-tdep.h: Add include guard. * mips-linux-tdep.h: Add include guard. * mi/mi-parse.h: Rename include guard. * mi/mi-out.h: Rename include guard. * mi/mi-main.h: Rename include guard. * mi/mi-interp.h: Rename include guard. * mi/mi-getopt.h: Rename include guard. * mi/mi-console.h: Rename include guard. * mi/mi-common.h: Rename include guard. * mi/mi-cmds.h: Rename include guard. * mi/mi-cmd-break.h: Rename include guard. * m2-lang.h: Add include guard. * location.h: Rename include guard. * linux-record.h: Rename include guard. * linux-nat.h: Add include guard. * linux-fork.h: Add include guard. * i386-darwin-tdep.h: Rename include guard. * hppa-linux-offsets.h: Add include guard. * guile/guile.h: Rename include guard. * guile/guile-internal.h: Rename include guard. * gnu-nat.h: Rename include guard. * gdb-stabs.h: Rename include guard. * frv-tdep.h: Add include guard. * f-lang.h: Add include guard. * event-loop.h: Add include guard. * darwin-nat.h: Rename include guard. * cp-abi.h: Rename include guard. * config/sparc/nm-sol2.h: Rename include guard. * config/nm-nto.h: Rename include guard. * config/nm-linux.h: Add include guard. * config/i386/nm-i386gnu.h: Rename include guard. * config/djgpp/nl_types.h: Rename include guard. * config/djgpp/langinfo.h: Rename include guard. * compile/gcc-cp-plugin.h: Add include guard. * compile/gcc-c-plugin.h: Add include guard. * compile/compile.h: Rename include guard. * compile/compile-object-run.h: Rename include guard. * compile/compile-object-load.h: Rename include guard. * compile/compile-internal.h: Rename include guard. * compile/compile-cplus.h: Rename include guard. * compile/compile-c.h: Rename include guard. * common/xml-utils.h: Rename include guard. * common/x86-xstate.h: Rename include guard. * common/version.h: Rename include guard. * common/vec.h: Rename include guard. * common/tdesc.h: Rename include guard. * common/selftest.h: Rename include guard. * common/scoped_restore.h: Rename include guard. * common/scoped_mmap.h: Rename include guard. * common/scoped_fd.h: Rename include guard. * common/safe-iterator.h: Rename include guard. * common/run-time-clock.h: Rename include guard. * common/refcounted-object.h: Rename include guard. * common/queue.h: Rename include guard. * common/ptid.h: Rename include guard. * common/print-utils.h: Rename include guard. * common/preprocessor.h: Rename include guard. * common/pathstuff.h: Rename include guard. * common/observable.h: Rename include guard. * common/netstuff.h: Rename include guard. * common/job-control.h: Rename include guard. * common/host-defs.h: Rename include guard. * common/gdb_wait.h: Rename include guard. * common/gdb_vecs.h: Rename include guard. * common/gdb_unlinker.h: Rename include guard. * common/gdb_unique_ptr.h: Rename include guard. * common/gdb_tilde_expand.h: Rename include guard. * common/gdb_sys_time.h: Rename include guard. * common/gdb_string_view.h: Rename include guard. * common/gdb_splay_tree.h: Rename include guard. * common/gdb_setjmp.h: Rename include guard. * common/gdb_ref_ptr.h: Rename include guard. * common/gdb_optional.h: Rename include guard. * common/gdb_locale.h: Rename include guard. * common/gdb_assert.h: Rename include guard. * common/filtered-iterator.h: Rename include guard. * common/filestuff.h: Rename include guard. * common/fileio.h: Rename include guard. * common/environ.h: Rename include guard. * common/common-utils.h: Rename include guard. * common/common-types.h: Rename include guard. * common/common-regcache.h: Rename include guard. * common/common-inferior.h: Rename include guard. * common/common-gdbthread.h: Rename include guard. * common/common-exceptions.h: Rename include guard. * common/common-defs.h: Rename include guard. * common/common-debug.h: Rename include guard. * common/cleanups.h: Rename include guard. * common/buffer.h: Rename include guard. * common/btrace-common.h: Rename include guard. * common/break-common.h: Rename include guard. * cli/cli-utils.h: Rename include guard. * cli/cli-style.h: Rename include guard. * cli/cli-setshow.h: Rename include guard. * cli/cli-script.h: Rename include guard. * cli/cli-interp.h: Rename include guard. * cli/cli-decode.h: Rename include guard. * cli/cli-cmds.h: Rename include guard. * charset-list.h: Add include guard. * buildsym-legacy.h: Rename include guard. * bfin-tdep.h: Add include guard. * ax.h: Rename include guard. * arm-linux-tdep.h: Add include guard. * arm-fbsd-tdep.h: Add include guard. * arch/xtensa.h: Rename include guard. * arch/tic6x.h: Add include guard. * arch/i386.h: Add include guard. * arch/arm.h: Rename include guard. * arch/arm-linux.h: Rename include guard. * arch/arm-get-next-pcs.h: Rename include guard. * arch/amd64.h: Add include guard. * arch/aarch64-insn.h: Rename include guard. * arch-utils.h: Rename include guard. * annotate.h: Add include guard. * amd64-darwin-tdep.h: Rename include guard. * aarch64-linux-tdep.h: Add include guard. * aarch64-fbsd-tdep.h: Add include guard. * aarch32-linux-nat.h: Add include guard. gdb/gdbserver/ChangeLog 2019-02-07 Tom Tromey <tom@tromey.com> * x86-tdesc.h: Rename include guard. * x86-low.h: Add include guard. * wincecompat.h: Rename include guard. * win32-low.h: Add include guard. * utils.h: Rename include guard. * tracepoint.h: Rename include guard. * tdesc.h: Rename include guard. * target.h: Rename include guard. * server.h: Rename include guard. * remote-utils.h: Rename include guard. * regcache.h: Rename include guard. * nto-low.h: Rename include guard. * notif.h: Add include guard. * mem-break.h: Rename include guard. * lynx-low.h: Add include guard. * linux-x86-tdesc.h: Add include guard. * linux-s390-tdesc.h: Add include guard. * linux-ppc-tdesc-init.h: Add include guard. * linux-low.h: Add include guard. * linux-aarch64-tdesc.h: Add include guard. * linux-aarch32-low.h: Add include guard. * inferiors.h: Rename include guard. * i387-fp.h: Rename include guard. * hostio.h: Rename include guard. * gdbthread.h: Rename include guard. * gdb_proc_service.h: Rename include guard. * event-loop.h: Rename include guard. * dll.h: Rename include guard. * debug.h: Rename include guard. * ax.h: Rename include guard.
2019-01-28 03:51:36 +08:00
#endif /* GDBSERVER_LINUX_S390_TDESC_H */