From a28aa6edd4ba848c110cd73fd4e29c2bbdb2cb72 Mon Sep 17 00:00:00 2001 From: Yao Qi Date: Fri, 9 Dec 2016 15:27:43 +0000 Subject: [PATCH] Create tdep->rx_psw_type and tdep->rx_fpsw_type lazily I build GDB with all targets enabled, and "set architecture rx", GDB crashes, (gdb) set architecture rx Program received signal SIGSEGV, Segmentation fault. append_flags_type_flag (type=0x20cc360, bitpos=bitpos@entry=0, name=name@entry=0xd27529 "C") at ../../binutils-gdb/gdb/gdbtypes.c:4926 4926 name); (gdb) bt 10 #0 append_flags_type_flag (type=0x20cc360, bitpos=bitpos@entry=0, name=name@entry=0xd27529 "C") at ../../binutils-gdb/gdb/gdbtypes.c:4926 #1 0x00000000004ce725 in rx_gdbarch_init (info=..., arches=) at ../../binutils-gdb/gdb/rx-tdep.c:1051 #2 0x00000000006b05a4 in gdbarch_find_by_info (info=...) at ../../binutils-gdb/gdb/gdbarch.c:5269 #3 0x000000000060eee4 in gdbarch_update_p (info=...) at ../../binutils-gdb/gdb/arch-utils.c:557 #4 0x000000000060f8a8 in set_architecture (ignore_args=, from_tty=1, c=) at ../../binutils-gdb/gdb/arch-utils.c:531 #5 0x0000000000593d0b in do_set_command (arg=, arg@entry=0x20bee81 "rx ", from_tty=from_tty@entry=1, c=c@entry=0x20b1540) at ../../binutils-gdb/gdb/cli/cli-setshow.c:455 #6 0x00000000007665c3 in execute_command (p=, p@entry=0x20bee70 "set architecture rx ", from_tty=1) at ../../binutils-gdb/gdb/top.c:666 #7 0x00000000006935f4 in command_handler (command=0x20bee70 "set architecture rx ") at ../../binutils-gdb/gdb/event-top.c:577 #8 0x00000000006938d8 in command_line_handler (rl=) at ../../binutils-gdb/gdb/event-top.c:767 #9 0x0000000000692c2c in gdb_rl_callback_handler (rl=0x20be7f0 "") at ../../binutils-gdb/gdb/event-top.c:200 The cause is that we want to access some builtin types in gdbarch init, but it is not initialized yet. I fix it by creating the type when it is to be used. We've already done this in sparc, sparc64 and m68k. gdb: 2016-12-09 Yao Qi PR tdep/20954 * rx-tdep.c (rx_psw_type): New function. (rx_fpsw_type): New function. (rx_register_type): Call rx_psw_type and rx_fpsw_type. (rx_gdbarch_init): Move code to rx_psw_type and rx_fpsw_type. gdb/testsuite: 2016-12-09 Yao Qi * gdb.base/all-architectures.exp.in: Remove kfail for "rx". --- gdb/rx-tdep.c | 103 ++++++++++++++---------- gdb/testsuite/gdb.base/all-architectures.exp.in | 7 -- 2 files changed, 62 insertions(+), 48 deletions(-) diff --git a/gdb/rx-tdep.c b/gdb/rx-tdep.c index 6b8d8d5..eb3dc47 100644 --- a/gdb/rx-tdep.c +++ b/gdb/rx-tdep.c @@ -150,6 +150,66 @@ rx_register_name (struct gdbarch *gdbarch, int regnr) return reg_names[regnr]; } +/* Construct the flags type for PSW and BPSW. */ + +static struct type * +rx_psw_type (struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + if (tdep->rx_psw_type == NULL) + { + tdep->rx_psw_type = arch_flags_type (gdbarch, "rx_psw_type", 4); + append_flags_type_flag (tdep->rx_psw_type, 0, "C"); + append_flags_type_flag (tdep->rx_psw_type, 1, "Z"); + append_flags_type_flag (tdep->rx_psw_type, 2, "S"); + append_flags_type_flag (tdep->rx_psw_type, 3, "O"); + append_flags_type_flag (tdep->rx_psw_type, 16, "I"); + append_flags_type_flag (tdep->rx_psw_type, 17, "U"); + append_flags_type_flag (tdep->rx_psw_type, 20, "PM"); + append_flags_type_flag (tdep->rx_psw_type, 24, "IPL0"); + append_flags_type_flag (tdep->rx_psw_type, 25, "IPL1"); + append_flags_type_flag (tdep->rx_psw_type, 26, "IPL2"); + append_flags_type_flag (tdep->rx_psw_type, 27, "IPL3"); + } + return tdep->rx_psw_type; +} + +/* Construct flags type for FPSW. */ + +static struct type * +rx_fpsw_type (struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + if (tdep->rx_psw_type == NULL) + { + tdep->rx_fpsw_type = arch_flags_type (gdbarch, "rx_fpsw_type", 4); + append_flags_type_flag (tdep->rx_fpsw_type, 0, "RM0"); + append_flags_type_flag (tdep->rx_fpsw_type, 1, "RM1"); + append_flags_type_flag (tdep->rx_fpsw_type, 2, "CV"); + append_flags_type_flag (tdep->rx_fpsw_type, 3, "CO"); + append_flags_type_flag (tdep->rx_fpsw_type, 4, "CZ"); + append_flags_type_flag (tdep->rx_fpsw_type, 5, "CU"); + append_flags_type_flag (tdep->rx_fpsw_type, 6, "CX"); + append_flags_type_flag (tdep->rx_fpsw_type, 7, "CE"); + append_flags_type_flag (tdep->rx_fpsw_type, 8, "DN"); + append_flags_type_flag (tdep->rx_fpsw_type, 10, "EV"); + append_flags_type_flag (tdep->rx_fpsw_type, 11, "EO"); + append_flags_type_flag (tdep->rx_fpsw_type, 12, "EZ"); + append_flags_type_flag (tdep->rx_fpsw_type, 13, "EU"); + append_flags_type_flag (tdep->rx_fpsw_type, 14, "EX"); + append_flags_type_flag (tdep->rx_fpsw_type, 26, "FV"); + append_flags_type_flag (tdep->rx_fpsw_type, 27, "FO"); + append_flags_type_flag (tdep->rx_fpsw_type, 28, "FZ"); + append_flags_type_flag (tdep->rx_fpsw_type, 29, "FU"); + append_flags_type_flag (tdep->rx_fpsw_type, 30, "FX"); + append_flags_type_flag (tdep->rx_fpsw_type, 31, "FS"); + } + + return tdep->rx_fpsw_type; +} + /* Implement the "register_type" gdbarch method. */ static struct type * rx_register_type (struct gdbarch *gdbarch, int reg_nr) @@ -159,9 +219,9 @@ rx_register_type (struct gdbarch *gdbarch, int reg_nr) if (reg_nr == RX_PC_REGNUM) return builtin_type (gdbarch)->builtin_func_ptr; else if (reg_nr == RX_PSW_REGNUM || reg_nr == RX_BPSW_REGNUM) - return tdep->rx_psw_type; + return rx_psw_type (gdbarch); else if (reg_nr == RX_FPSW_REGNUM) - return tdep->rx_fpsw_type; + return rx_fpsw_type (gdbarch); else if (reg_nr == RX_ACC_REGNUM) return builtin_type (gdbarch)->builtin_unsigned_long_long; else @@ -1045,45 +1105,6 @@ rx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) gdbarch = gdbarch_alloc (&info, tdep); tdep->elf_flags = elf_flags; - /* Initialize the flags type for PSW and BPSW. */ - - tdep->rx_psw_type = arch_flags_type (gdbarch, "rx_psw_type", 4); - append_flags_type_flag (tdep->rx_psw_type, 0, "C"); - append_flags_type_flag (tdep->rx_psw_type, 1, "Z"); - append_flags_type_flag (tdep->rx_psw_type, 2, "S"); - append_flags_type_flag (tdep->rx_psw_type, 3, "O"); - append_flags_type_flag (tdep->rx_psw_type, 16, "I"); - append_flags_type_flag (tdep->rx_psw_type, 17, "U"); - append_flags_type_flag (tdep->rx_psw_type, 20, "PM"); - append_flags_type_flag (tdep->rx_psw_type, 24, "IPL0"); - append_flags_type_flag (tdep->rx_psw_type, 25, "IPL1"); - append_flags_type_flag (tdep->rx_psw_type, 26, "IPL2"); - append_flags_type_flag (tdep->rx_psw_type, 27, "IPL3"); - - /* Initialize flags type for FPSW. */ - - tdep->rx_fpsw_type = arch_flags_type (gdbarch, "rx_fpsw_type", 4); - append_flags_type_flag (tdep->rx_fpsw_type, 0, "RM0"); - append_flags_type_flag (tdep->rx_fpsw_type, 1, "RM1"); - append_flags_type_flag (tdep->rx_fpsw_type, 2, "CV"); - append_flags_type_flag (tdep->rx_fpsw_type, 3, "CO"); - append_flags_type_flag (tdep->rx_fpsw_type, 4, "CZ"); - append_flags_type_flag (tdep->rx_fpsw_type, 5, "CU"); - append_flags_type_flag (tdep->rx_fpsw_type, 6, "CX"); - append_flags_type_flag (tdep->rx_fpsw_type, 7, "CE"); - append_flags_type_flag (tdep->rx_fpsw_type, 8, "DN"); - append_flags_type_flag (tdep->rx_fpsw_type, 10, "EV"); - append_flags_type_flag (tdep->rx_fpsw_type, 11, "EO"); - append_flags_type_flag (tdep->rx_fpsw_type, 12, "EZ"); - append_flags_type_flag (tdep->rx_fpsw_type, 13, "EU"); - append_flags_type_flag (tdep->rx_fpsw_type, 14, "EX"); - append_flags_type_flag (tdep->rx_fpsw_type, 26, "FV"); - append_flags_type_flag (tdep->rx_fpsw_type, 27, "FO"); - append_flags_type_flag (tdep->rx_fpsw_type, 28, "FZ"); - append_flags_type_flag (tdep->rx_fpsw_type, 29, "FU"); - append_flags_type_flag (tdep->rx_fpsw_type, 30, "FX"); - append_flags_type_flag (tdep->rx_fpsw_type, 31, "FS"); - set_gdbarch_num_regs (gdbarch, RX_NUM_REGS); set_gdbarch_num_pseudo_regs (gdbarch, 0); set_gdbarch_register_name (gdbarch, rx_register_name); diff --git a/gdb/testsuite/gdb.base/all-architectures.exp.in b/gdb/testsuite/gdb.base/all-architectures.exp.in index 94bee2e..a33749a 100644 --- a/gdb/testsuite/gdb.base/all-architectures.exp.in +++ b/gdb/testsuite/gdb.base/all-architectures.exp.in @@ -209,13 +209,6 @@ with_test_prefix "tests" { continue } - if {$arch == "rx"} { - if {$want_tests_messages} { - kfail "set architecture rx" "gdb/20954" - } - continue - } - if {$arch == "auto"} { continue } -- 2.7.4