X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gdb%2FNEWS;h=3fe603615afc858428bc085f345fca3ee12314d5;hb=fbea99ea8a062e5cd96e2d88336984ed3adc93d4;hp=3fa33c90247f28d275be13594052aa75299fffee;hpb=236af5e336970a6b58cd17e0a2981bd96f3d09a0;p=binutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index 3fa33c90247..3fe603615af 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,7 +1,40 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 7.9 +*** Changes since GDB 7.10 + +* Support for tracepoints on aarch64-linux was added in GDBserver. + +* The 'record instruction-history' command now indicates speculative execution + when using the Intel(R) Processor Trace recording format. + +* New commands + +maint set target-non-stop (on|off|auto) +maint show target-non-stop + Control whether GDB targets always operate in non-stop mode even if + "set non-stop" is "off". The default is "auto", meaning non-stop + mode is enabled if supported by the target. + +*** Changes in GDB 7.10 + +* Support for process record-replay and reverse debugging on aarch64*-linux* + targets has been added. GDB now supports recording of A64 instruction set + including advance SIMD instructions. + +* Support for Sun's version of the "stabs" debug file format has been removed. + +* GDB now honors the content of the file /proc/PID/coredump_filter + (PID is the process ID) on GNU/Linux systems. This file can be used + to specify the types of memory mappings that will be included in a + corefile. For more information, please refer to the manual page of + "core(5)". GDB also has a new command: "set use-coredump-filter + on|off". It allows to set whether GDB will read the content of the + /proc/PID/coredump_filter file when generating a corefile. + +* The "info os" command on GNU/Linux can now display information on + cpu information : + "info os cpus" Listing of all cpus/cores on the system * GDB has two new commands: "set serial parity odd|even|none" and "show serial parity". These allows to set or show parity for the @@ -11,11 +44,62 @@ present in the debug info. This typically includes the compiler version and may include things like its command line arguments. +* The "info dll", an alias of the "info sharedlibrary" command, + is now available on all platforms. + +* Directory names supplied to the "set sysroot" commands may be + prefixed with "target:" to tell GDB to access shared libraries from + the target system, be it local or remote. This replaces the prefix + "remote:". The default sysroot has been changed from "" to + "target:". "remote:" is automatically converted to "target:" for + backward compatibility. + +* The system root specified by "set sysroot" will be prepended to the + filename of the main executable (if reported to GDB as absolute by + the operating system) when starting processes remotely, and when + attaching to already-running local or remote processes. + +* GDB now supports automatic location and retrieval of executable + files from remote targets. Remote debugging can now be initiated + using only a "target remote" or "target extended-remote" command + (no "set sysroot" or "file" commands are required). See "New remote + packets" below. + +* The "dump" command now supports verilog hex format. + +* GDB now supports the vector ABI on S/390 GNU/Linux targets. + +* On GNU/Linux, GDB and gdbserver are now able to access executable + and shared library files without a "set sysroot" command when + attaching to processes running in different mount namespaces from + the debugger. This makes it possible to attach to processes in + containers as simply as "gdb -p PID" or "gdbserver --attach PID". + See "New remote packets" below. + +* The "tui reg" command now provides completion for all of the + available register groups, including target specific groups. + +* The HISTSIZE environment variable is no longer read when determining + the size of GDB's command history. GDB now instead reads the dedicated + GDBHISTSIZE environment variable. Setting GDBHISTSIZE to "-1" or to "" now + disables truncation of command history. Non-numeric values of GDBHISTSIZE + are ignored. + +* Guile Scripting + + ** Memory ports can now be unbuffered. + * Python Scripting ** gdb.Objfile objects have a new attribute "username", which is the name of the objfile as specified by the user, without, for example, resolving symlinks. + ** You can now write frame unwinders in Python. + ** gdb.Type objects have a new method "optimized_out", + returning optimized out gdb.Value instance of this type. + ** gdb.Value objects have new methods "reference_value" and + "const_value" which return a reference to the value and a + "const" version of the value respectively. * New commands @@ -28,12 +112,70 @@ maint print symbol-cache-statistics maint flush-symbol-cache Flush the contents of the symbol cache. +maint set target-non-stop (on|off|auto) +maint show target-non-stop + Control whether GDB targets always operate in non-stop mode even if + "set non-stop" is "off". The default is "auto", meaning non-stop + mode is enabled if supported by the target. + record btrace bts record bts Start branch trace recording using Branch Trace Store (BTS) format. +compile print + Evaluate expression by using the compiler and print result. + +tui enable +tui disable + Explicit commands for enabling and disabling tui mode. + +show mpx bound +set mpx bound on i386 and amd64 + Support for bound table investigation on Intel(R) MPX enabled applications. + +record btrace pt +record pt + Start branch trace recording using Intel(R) Processor Trace format. + +maint info btrace + Print information about branch tracing internals. + +maint btrace packet-history + Print the raw branch tracing data. + +maint btrace clear-packet-history + Discard the stored raw branch tracing data. + +maint btrace clear + Discard all branch tracing data. It will be fetched and processed + anew by the next "record" command. + * New options +set debug dwarf-die + Renamed from "set debug dwarf2-die". +show debug dwarf-die + Renamed from "show debug dwarf2-die". + +set debug dwarf-read + Renamed from "set debug dwarf2-read". +show debug dwarf-read + Renamed from "show debug dwarf2-read". + +maint set dwarf always-disassemble + Renamed from "maint set dwarf2 always-disassemble". +maint show dwarf always-disassemble + Renamed from "maint show dwarf2 always-disassemble". + +maint set dwarf max-cache-age + Renamed from "maint set dwarf2 max-cache-age". +maint show dwarf max-cache-age + Renamed from "maint show dwarf2 max-cache-age". + +set debug dwarf-line +show debug dwarf-line + Control display of debugging info regarding DWARF line processing. + set max-completions show max-completions Set the maximum number of candidates to be considered during @@ -41,6 +183,10 @@ show max-completions to avoid generating large completion lists, the computation of which can cause the debugger to become temporarily unresponsive. +set history remove-duplicates +show history remove-duplicates + Control the removal of duplicate history entries. + maint set symbol-cache-size maint show symbol-cache-size Control the size of the symbol cache. @@ -51,6 +197,20 @@ set|show record btrace bts buffer-size The obtained size may differ from the requested size. Use "info record" to see the obtained buffer size. +set debug linux-namespaces +show debug linux-namespaces + Control display of debugging info regarding Linux namespaces. + +set|show record btrace pt buffer-size + Set and show the size of the ring buffer used for branch tracing in + Intel(R) Processor Trace format. + The obtained size may differ from the requested size. Use "info + record" to see the obtained buffer size. + +maint set|show btrace pt skip-pad + Set and show whether PAD packets are skipped when computing the + packet history. + * The command 'thread apply all' can now support new option '-ascending' to call its specified command for all threads in ascending order. @@ -67,6 +227,15 @@ qXfer:btrace-conf:read Qbtrace-conf:bts:size Set the requested ring buffer size for branch tracing in BTS format. +Qbtrace:pt + Enable Intel(R) Procesor Trace-based branch tracing for the current + process. The remote stub reports support for this packet to GDB's + qSupported query. + +Qbtrace-conf:pt:size + Set the requested ring buffer size for branch tracing in Intel(R) Processor + Trace format. + swbreak stop reason Indicates a memory breakpoint instruction was executed, irrespective of whether it was GDB that planted the breakpoint or the breakpoint @@ -80,6 +249,40 @@ hwbreak stop reason vFile:fstat: Return information about files on the remote system. +qXfer:exec-file:read + Return the full absolute name of the file that was executed to + create a process running on the remote system. + +vFile:setfs: + Select the filesystem on which vFile: operations with filename + arguments will operate. This is required for GDB to be able to + access files on remote targets where the remote stub does not + share a common filesystem with the inferior(s). + +fork stop reason + Indicates that a fork system call was executed. + +vfork stop reason + Indicates that a vfork system call was executed. + +vforkdone stop reason + Indicates that a vfork child of the specified process has executed + an exec or exit, allowing the vfork parent to resume execution. + +fork-events and vfork-events features in qSupported + The qSupported packet allows GDB to request support for fork and + vfork events using new 'gdbfeatures' fork-events and vfork-events, + and the qSupported response can contain the corresponding + 'stubfeatures'. Set and show commands can be used to display + whether these features are enabled. + +* Extended-remote fork events + + ** GDB now has support for fork events on extended-remote Linux + targets. For targets with Linux kernels 2.5.60 and later, this + enables follow-fork-mode and detach-on-fork for both fork and + vfork, as well as fork and vfork catchpoints. + * The info record command now shows the recording format and the branch tracing configuration for the current thread when using the btrace record target. @@ -91,11 +294,32 @@ vFile:fstat: * GDB now supports access to vector registers on S/390 GNU/Linux targets. +* Removed command line options + +-xdb HP-UX XDB compatibility mode. + * Removed targets and native configurations HP/PA running HP-UX hppa*-*-hpux* Itanium running HP-UX ia64-*-hpux* +* New configure options + +--with-intel-pt + This configure option allows the user to build GDB with support for + Intel(R) Processor Trace (default: auto). This requires libipt. + +--with-libipt-prefix=PATH + Specify the path to the version of libipt that GDB should use. + $PATH/include should contain the intel-pt.h header and + $PATH/lib should contain the libipt.so library. + +*** Changes in GDB 7.9.1 + +* Python Scripting + + ** Xmethods can now specify a result type. + *** Changes in GDB 7.9 * GDB now supports hardware watchpoints on x86 GNU Hurd.