From d7abedf7e7d18c8a32f63b0e44bee4a4f3b581ba Mon Sep 17 00:00:00 2001 From: Tankut Baris Aktemur Date: Mon, 17 Feb 2020 16:11:57 +0100 Subject: [PATCH] gdbserver: turn target op 'qxfer_siginfo' into a method gdbserver/ChangeLog: 2020-02-20 Tankut Baris Aktemur Turn process_stratum_target's qxfer_siginfo op into a method of process_target. * target.h (struct process_stratum_target): Remove the target op. (class process_target): Add the target op. Also add 'supports_qxfer_siginfo'. * target.cc (process_target::qxfer_siginfo): Define. (process_target::supports_qxfer_siginfo): Define. Update the derived classes and callers below. * server.cc (handle_qxfer_siginfo): Update. (handle_query): Update. * linux-low.cc (linux_target_ops): Update. (linux_process_target::supports_qxfer_siginfo): Define. (linux_xfer_siginfo): Turn into ... (linux_process_target::qxfer_siginfo): ... this. * linux-low.h (class linux_process_target): Update. * lynx-low.cc (lynx_target_ops): Update. * nto-low.cc (nto_target_ops): Update. * win32-low.cc (win32_target_ops): Update. --- gdbserver/ChangeLog | 24 ++++++++++++++++++++++++ gdbserver/linux-low.cc | 15 +++++++++++---- gdbserver/linux-low.h | 6 ++++++ gdbserver/lynx-low.cc | 1 - gdbserver/nto-low.cc | 1 - gdbserver/server.cc | 6 +++--- gdbserver/target.cc | 14 ++++++++++++++ gdbserver/target.h | 13 ++++++++----- gdbserver/win32-low.cc | 15 +++++++++++---- gdbserver/win32-low.h | 6 ++++++ 10 files changed, 83 insertions(+), 18 deletions(-) diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog index a14fb7a42f2..e44108711bd 100644 --- a/gdbserver/ChangeLog +++ b/gdbserver/ChangeLog @@ -1,3 +1,27 @@ +2020-02-20 Tankut Baris Aktemur + + Turn process_stratum_target's qxfer_siginfo op into a method of + process_target. + + * target.h (struct process_stratum_target): Remove the target op. + (class process_target): Add the target op. Also add + 'supports_qxfer_siginfo'. + * target.cc (process_target::qxfer_siginfo): Define. + (process_target::supports_qxfer_siginfo): Define. + + Update the derived classes and callers below. + + * server.cc (handle_qxfer_siginfo): Update. + (handle_query): Update. + * linux-low.cc (linux_target_ops): Update. + (linux_process_target::supports_qxfer_siginfo): Define. + (linux_xfer_siginfo): Turn into ... + (linux_process_target::qxfer_siginfo): ... this. + * linux-low.h (class linux_process_target): Update. + * lynx-low.cc (lynx_target_ops): Update. + * nto-low.cc (nto_target_ops): Update. + * win32-low.cc (win32_target_ops): Update. + 2020-02-20 Tankut Baris Aktemur Turn process_stratum_target's qxfer_osdata op into a method of diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc index 14a895d0d67..552c73524aa 100644 --- a/gdbserver/linux-low.cc +++ b/gdbserver/linux-low.cc @@ -6182,9 +6182,17 @@ siginfo_fixup (siginfo_t *siginfo, gdb_byte *inf_siginfo, int direction) } } -static int -linux_xfer_siginfo (const char *annex, unsigned char *readbuf, - unsigned const char *writebuf, CORE_ADDR offset, int len) +bool +linux_process_target::supports_qxfer_siginfo () +{ + return true; +} + +int +linux_process_target::qxfer_siginfo (const char *annex, + unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len) { int pid; siginfo_t siginfo; @@ -7421,7 +7429,6 @@ linux_get_hwcap2 (int wordsize) static linux_process_target the_linux_target; static process_stratum_target linux_target_ops = { - linux_xfer_siginfo, linux_supports_non_stop, linux_async, linux_start_non_stop, diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h index 892767140e1..5a0e370dd89 100644 --- a/gdbserver/linux-low.h +++ b/gdbserver/linux-low.h @@ -351,6 +351,12 @@ public: int qxfer_osdata (const char *annex, unsigned char *readbuf, unsigned const char *writebuf, CORE_ADDR offset, int len) override; + + bool supports_qxfer_siginfo () override; + + int qxfer_siginfo (const char *annex, unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len) override; }; #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr))) diff --git a/gdbserver/lynx-low.cc b/gdbserver/lynx-low.cc index ecd7476db45..86e90df0086 100644 --- a/gdbserver/lynx-low.cc +++ b/gdbserver/lynx-low.cc @@ -735,7 +735,6 @@ static lynx_process_target the_lynx_target; /* The LynxOS target_ops vector. */ static process_stratum_target lynx_target_ops = { - NULL, /* qxfer_siginfo */ NULL, /* supports_non_stop */ NULL, /* async */ NULL, /* start_non_stop */ diff --git a/gdbserver/nto-low.cc b/gdbserver/nto-low.cc index fffe6313305..78e8fd966b9 100644 --- a/gdbserver/nto-low.cc +++ b/gdbserver/nto-low.cc @@ -956,7 +956,6 @@ nto_sw_breakpoint_from_kind (int kind, int *size) static nto_process_target the_nto_target; static process_stratum_target nto_target_ops = { - NULL, /* xfer_siginfo */ nto_supports_non_stop, NULL, /* async */ NULL, /* start_non_stop */ diff --git a/gdbserver/server.cc b/gdbserver/server.cc index 59eb1c0c3d7..ece75f01868 100644 --- a/gdbserver/server.cc +++ b/gdbserver/server.cc @@ -1600,13 +1600,13 @@ handle_qxfer_siginfo (const char *annex, gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST offset, LONGEST len) { - if (the_target->qxfer_siginfo == NULL) + if (!the_target->pt->supports_qxfer_siginfo ()) return -2; if (annex[0] != '\0' || current_thread == NULL) return -1; - return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); + return the_target->pt->qxfer_siginfo (annex, readbuf, writebuf, offset, len); } /* Handle qXfer:statictrace:read. */ @@ -2377,7 +2377,7 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p) if (the_target->pt->supports_read_auxv ()) strcat (own_buf, ";qXfer:auxv:read+"); - if (the_target->qxfer_siginfo != NULL) + if (the_target->pt->supports_qxfer_siginfo ()) strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); if (the_target->read_loadmap != NULL) diff --git a/gdbserver/target.cc b/gdbserver/target.cc index c6ed544e669..94bb45fcace 100644 --- a/gdbserver/target.cc +++ b/gdbserver/target.cc @@ -527,3 +527,17 @@ process_target::qxfer_osdata (const char *annex, unsigned char *readbuf, { gdb_assert_not_reached ("target op qxfer_osdata not supported"); } + +bool +process_target::supports_qxfer_siginfo () +{ + return false; +} + +int +process_target::qxfer_siginfo (const char *annex, unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len) +{ + gdb_assert_not_reached ("target op qxfer_siginfo not supported"); +} diff --git a/gdbserver/target.h b/gdbserver/target.h index 53f88a02bac..1ad0005c8f4 100644 --- a/gdbserver/target.h +++ b/gdbserver/target.h @@ -70,11 +70,6 @@ class process_target; shared code. */ struct process_stratum_target { - /* Read/Write extra signal info. */ - int (*qxfer_siginfo) (const char *annex, unsigned char *readbuf, - unsigned const char *writebuf, - CORE_ADDR offset, int len); - int (*supports_non_stop) (void); /* Enables async target events. Returns the previous enable @@ -482,6 +477,14 @@ public: virtual int qxfer_osdata (const char *annex, unsigned char *readbuf, unsigned const char *writebuf, CORE_ADDR offset, int len); + + /* Return true if the qxfer_siginfo target op is supported. */ + virtual bool supports_qxfer_siginfo (); + + /* Read/Write extra signal info. */ + virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len); }; extern process_stratum_target *the_target; diff --git a/gdbserver/win32-low.cc b/gdbserver/win32-low.cc index ce750b5e37c..23c23bc7ed8 100644 --- a/gdbserver/win32-low.cc +++ b/gdbserver/win32-low.cc @@ -1793,11 +1793,19 @@ win32_process_target::hostio_last_error (char *buf) } #endif +bool +win32_process_target::supports_qxfer_siginfo () +{ + return true; +} + /* Write Windows signal info. */ -static int -win32_xfer_siginfo (const char *annex, unsigned char *readbuf, - unsigned const char *writebuf, CORE_ADDR offset, int len) +int +win32_process_target::qxfer_siginfo (const char *annex, + unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len) { if (siginfo_er.ExceptionCode == 0) return -1; @@ -1844,7 +1852,6 @@ win32_sw_breakpoint_from_kind (int kind, int *size) static win32_process_target the_win32_target; static process_stratum_target win32_target_ops = { - win32_xfer_siginfo, NULL, /* supports_non_stop */ NULL, /* async */ NULL, /* start_non_stop */ diff --git a/gdbserver/win32-low.h b/gdbserver/win32-low.h index 86447fd541a..b259b1fbac1 100644 --- a/gdbserver/win32-low.h +++ b/gdbserver/win32-low.h @@ -156,6 +156,12 @@ public: #ifdef _WIN32_WCE void hostio_last_error (char *buf) override; #endif + + bool supports_qxfer_siginfo () override; + + int qxfer_siginfo (const char *annex, unsigned char *readbuf, + unsigned const char *writebuf, + CORE_ADDR offset, int len) override; }; /* Retrieve the context for this thread, if not already retrieved. */ -- 2.30.2