From: Jan Kratochvil Date: Mon, 17 Sep 2012 07:15:48 +0000 (+0000) Subject: gdb/ X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1ab3b62c9dabd92c26377f25146f1d58e3c766a6;p=binutils-gdb.git gdb/ PR 14119 * frame.c (skip_inlined_frames): Skip also TAILCALL_FRAME frames. (frame_pop): Drop also TAILCALL_FRAME frames. * infcmd.c (finish_command): Ignore also TAILCALL_FRAME frames. gdb/testsuite/ PR 14119 * gdb.arch/amd64-tailcall-ret.S: New file. * gdb.arch/amd64-tailcall-ret.c: New file. * gdb.arch/amd64-tailcall-ret.exp: New file. * gdb.reverse/amd64-tailcall-reverse.S: New file. * gdb.reverse/amd64-tailcall-reverse.c: New file. * gdb.reverse/amd64-tailcall-reverse.exp: New file. --- diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b504479ea00..38fc1ad89b9 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2012-09-17 Jan Kratochvil + + PR 14119 + * frame.c (skip_inlined_frames): Skip also TAILCALL_FRAME frames. + (frame_pop): Drop also TAILCALL_FRAME frames. + * infcmd.c (finish_command): Ignore also TAILCALL_FRAME frames. + 2012-09-17 Jan Kratochvil Pedro Alves diff --git a/gdb/frame.c b/gdb/frame.c index 8c44cadccf1..a2f23a49343 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -310,7 +310,8 @@ fprint_frame (struct ui_file *file, struct frame_info *fi) static struct frame_info * skip_artificial_frames (struct frame_info *frame) { - while (get_frame_type (frame) == INLINE_FRAME) + while (get_frame_type (frame) == INLINE_FRAME + || get_frame_type (frame) == TAILCALL_FRAME) frame = get_prev_frame (frame); return frame; @@ -815,6 +816,11 @@ frame_pop (struct frame_info *this_frame) if (!prev_frame) error (_("Cannot pop the initial frame.")); + /* Ignore TAILCALL_FRAME type frames, they were executed already before + entering THISFRAME. */ + while (get_frame_type (prev_frame) == TAILCALL_FRAME) + prev_frame = get_prev_frame (prev_frame); + /* Make a copy of all the register values unwound from this frame. Save them in a scratch buffer so that there isn't a race between trying to extract the old values from the current regcache while diff --git a/gdb/infcmd.c b/gdb/infcmd.c index 8e2f74eddba..cce624e464f 100644 --- a/gdb/infcmd.c +++ b/gdb/infcmd.c @@ -1777,6 +1777,11 @@ finish_command (char *arg, int from_tty) return; } + /* Ignore TAILCALL_FRAME type frames, they were executed already before + entering THISFRAME. */ + while (get_frame_type (frame) == TAILCALL_FRAME) + frame = get_prev_frame (frame); + /* Find the function we will return from. */ function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index be1909642f4..7fa17472752 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,13 @@ +2012-09-17 Jan Kratochvil + + PR 14119 + * gdb.arch/amd64-tailcall-ret.S: New file. + * gdb.arch/amd64-tailcall-ret.c: New file. + * gdb.arch/amd64-tailcall-ret.exp: New file. + * gdb.reverse/amd64-tailcall-reverse.S: New file. + * gdb.reverse/amd64-tailcall-reverse.c: New file. + * gdb.reverse/amd64-tailcall-reverse.exp: New file. + 2012-09-17 Jan Kratochvil PR 14548 diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-ret.S b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.S new file mode 100644 index 00000000000..e64b70d6713 --- /dev/null +++ b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.S @@ -0,0 +1,357 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2012 Free Software Foundation, Inc. + + 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 . */ + +/* This source file was generated by: + gcc -o gdb.arch/amd64-tailcall-ret.S gdb.arch/amd64-tailcall-ret.c -Wall -S -dA -O2 -g + */ + + .file "amd64-tailcall-ret.c" + .text +.Ltext0: + .p2align 4,,15 + .type g, @function +g: +.LFB0: + .file 1 "gdb.arch/amd64-tailcall-ret.c" + # gdb.arch/amd64-tailcall-ret.c:22 + .loc 1 22 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.arch/amd64-tailcall-ret.c:23 + .loc 1 23 0 + movl $2, v(%rip) +# SUCC: EXIT [100.0%] + ret + .cfi_endproc +.LFE0: + .size g, .-g + .p2align 4,,15 + .type f, @function +f: +.LFB1: + # gdb.arch/amd64-tailcall-ret.c:28 + .loc 1 28 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.arch/amd64-tailcall-ret.c:29 + .loc 1 29 0 + jmp g +# SUCC: EXIT [100.0%] (ab,sibcall) +.LVL0: + .cfi_endproc +.LFE1: + .size f, .-f + .section .text.startup,"ax",@progbits + .p2align 4,,15 + .globl main + .type main, @function +main: +.LFB2: + # gdb.arch/amd64-tailcall-ret.c:34 + .loc 1 34 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.arch/amd64-tailcall-ret.c:35 + .loc 1 35 0 + call f +.LVL1: + # gdb.arch/amd64-tailcall-ret.c:36 + .loc 1 36 0 + call f +.LVL2: + # gdb.arch/amd64-tailcall-ret.c:37 + .loc 1 37 0 + movl $3, v(%rip) + # gdb.arch/amd64-tailcall-ret.c:39 + .loc 1 39 0 + xorl %eax, %eax +# SUCC: EXIT [100.0%] + ret + .cfi_endproc +.LFE2: + .size main, .-main + .comm v,4,4 + .text +.Letext0: + .section .debug_info,"",@progbits +.Ldebug_info0: + .long 0xd5 # Length of Compilation Unit Info + .value 0x2 # DWARF version number + .long .Ldebug_abbrev0 # Offset Into Abbrev. Section + .byte 0x8 # Pointer Size (in bytes) + .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit) + .long .LASF0 # DW_AT_producer: "GNU C 4.7.2 20120911 (prerelease)" + .byte 0x1 # DW_AT_language + .long .LASF1 # DW_AT_name: "gdb.arch/amd64-tailcall-ret.c" + .long .LASF2 # DW_AT_comp_dir: "" + .long .Ldebug_ranges0+0 # DW_AT_ranges + .quad 0 # DW_AT_low_pc + .quad 0 # DW_AT_entry_pc + .long .Ldebug_line0 # DW_AT_stmt_list + .uleb128 0x2 # (DIE (0x31) DW_TAG_subprogram) + .ascii "g\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.arch/amd64-tailcall-ret.c) + .byte 0x15 # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .quad .LFB0 # DW_AT_low_pc + .quad .LFE0 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .uleb128 0x3 # (DIE (0x4b) DW_TAG_subprogram) + .ascii "f\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.arch/amd64-tailcall-ret.c) + .byte 0x1b # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .quad .LFB1 # DW_AT_low_pc + .quad .LFE1 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .long 0x78 # DW_AT_sibling + .uleb128 0x4 # (DIE (0x69) DW_TAG_GNU_call_site) + .quad .LVL0 # DW_AT_low_pc + .byte 0x1 # DW_AT_GNU_tail_call + .long 0x31 # DW_AT_abstract_origin + .byte 0 # end of children of DIE 0x4b + .uleb128 0x5 # (DIE (0x78) DW_TAG_subprogram) + .byte 0x1 # DW_AT_external + .long .LASF3 # DW_AT_name: "main" + .byte 0x1 # DW_AT_decl_file (gdb.arch/amd64-tailcall-ret.c) + .byte 0x21 # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .long 0xb8 # DW_AT_type + .quad .LFB2 # DW_AT_low_pc + .quad .LFE2 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .long 0xb8 # DW_AT_sibling + .uleb128 0x6 # (DIE (0x9d) DW_TAG_GNU_call_site) + .quad .LVL1 # DW_AT_low_pc + .long 0x4b # DW_AT_abstract_origin + .uleb128 0x6 # (DIE (0xaa) DW_TAG_GNU_call_site) + .quad .LVL2 # DW_AT_low_pc + .long 0x4b # DW_AT_abstract_origin + .byte 0 # end of children of DIE 0x78 + .uleb128 0x7 # (DIE (0xb8) DW_TAG_base_type) + .byte 0x4 # DW_AT_byte_size + .byte 0x5 # DW_AT_encoding + .ascii "int\0" # DW_AT_name + .uleb128 0x8 # (DIE (0xbf) DW_TAG_variable) + .ascii "v\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.arch/amd64-tailcall-ret.c) + .byte 0x12 # DW_AT_decl_line + .long 0xd3 # DW_AT_type + .byte 0x1 # DW_AT_external + .byte 0x9 # DW_AT_location + .byte 0x3 # DW_OP_addr + .quad v + .uleb128 0x9 # (DIE (0xd3) DW_TAG_volatile_type) + .long 0xb8 # DW_AT_type + .byte 0 # end of children of DIE 0xb + .section .debug_abbrev,"",@progbits +.Ldebug_abbrev0: + .uleb128 0x1 # (abbrev code) + .uleb128 0x11 # (TAG: DW_TAG_compile_unit) + .byte 0x1 # DW_children_yes + .uleb128 0x25 # (DW_AT_producer) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x13 # (DW_AT_language) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x1b # (DW_AT_comp_dir) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x55 # (DW_AT_ranges) + .uleb128 0x6 # (DW_FORM_data4) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x52 # (DW_AT_entry_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x10 # (DW_AT_stmt_list) + .uleb128 0x6 # (DW_FORM_data4) + .byte 0 + .byte 0 + .uleb128 0x2 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .byte 0 + .byte 0 + .uleb128 0x3 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0x1 # DW_children_yes + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x1 # (DW_AT_sibling) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x4 # (abbrev code) + .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) + .byte 0 # DW_children_no + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x2115 # (DW_AT_GNU_tail_call) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x31 # (DW_AT_abstract_origin) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x5 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0x1 # DW_children_yes + .uleb128 0x3f # (DW_AT_external) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x1 # (DW_AT_sibling) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x6 # (abbrev code) + .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) + .byte 0 # DW_children_no + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x31 # (DW_AT_abstract_origin) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x7 # (abbrev code) + .uleb128 0x24 # (TAG: DW_TAG_base_type) + .byte 0 # DW_children_no + .uleb128 0xb # (DW_AT_byte_size) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3e # (DW_AT_encoding) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .byte 0 + .byte 0 + .uleb128 0x8 # (abbrev code) + .uleb128 0x34 # (TAG: DW_TAG_variable) + .byte 0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x3f # (DW_AT_external) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x2 # (DW_AT_location) + .uleb128 0xa # (DW_FORM_block1) + .byte 0 + .byte 0 + .uleb128 0x9 # (abbrev code) + .uleb128 0x35 # (TAG: DW_TAG_volatile_type) + .byte 0 # DW_children_no + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .byte 0 + .section .debug_aranges,"",@progbits + .long 0x3c # Length of Address Ranges Info + .value 0x2 # DWARF Version + .long .Ldebug_info0 # Offset of Compilation Unit Info + .byte 0x8 # Size of Address + .byte 0 # Size of Segment Descriptor + .value 0 # Pad to 16 byte boundary + .value 0 + .quad .Ltext0 # Address + .quad .Letext0-.Ltext0 # Length + .quad .LFB2 # Address + .quad .LFE2-.LFB2 # Length + .quad 0 + .quad 0 + .section .debug_ranges,"",@progbits +.Ldebug_ranges0: + .quad .Ltext0 # Offset 0 + .quad .Letext0 + .quad .LFB2 # Offset 0x10 + .quad .LFE2 + .quad 0 + .quad 0 + .section .debug_line,"",@progbits +.Ldebug_line0: + .section .debug_str,"MS",@progbits,1 +.LASF0: + .string "GNU C 4.7.2 20120911 (prerelease)" +.LASF1: + .string "gdb.arch/amd64-tailcall-ret.c" +.LASF2: + .string "" +.LASF3: + .string "main" + .ident "GCC: (GNU) 4.7.2 20120911 (prerelease)" + .section .note.GNU-stack,"",@progbits diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-ret.c b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.c new file mode 100644 index 00000000000..ec9a1fbb0c8 --- /dev/null +++ b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.c @@ -0,0 +1,39 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2012 Free Software Foundation, Inc. + + 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 . */ + +volatile int v; + +static __attribute__ ((noinline, noclone)) void +g (void) +{ + v = 2; +} + +static __attribute__ ((noinline, noclone)) void +f (void) +{ + g (); +} + +int +main (void) +{ + f (); /* first */ + f (); /* second */ + v = 3; + return 0; +} diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-ret.exp b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.exp new file mode 100644 index 00000000000..8460893fa3d --- /dev/null +++ b/gdb/testsuite/gdb.arch/amd64-tailcall-ret.exp @@ -0,0 +1,44 @@ +# Copyright (C) 2012 Free Software Foundation, Inc. +# +# 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 . + +set opts {} +standard_testfile .S + +if [info exists COMPILE] { + # make check RUNTESTFLAGS="gdb.arch/amd64-tailcall-ret.exp COMPILE=1" + standard_testfile + lappend opts debug optimize=-O2 +} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } { + verbose "Skipping ${testfile}." + return +} + +if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $opts] } { + return -1 +} + +if ![runto_main] { + return -1 +} + +gdb_breakpoint "g" +gdb_continue_to_breakpoint "g" ".* v = 2;" + +gdb_test "return" { f \(\); /\* second \*/} "return" \ + {Make g return now\? \(y or n\) } "y" + +gdb_continue_to_breakpoint "g" ".* v = 2;" + +gdb_test "finish" " v = 3;" diff --git a/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.S b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.S new file mode 100644 index 00000000000..71a7278b370 --- /dev/null +++ b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.S @@ -0,0 +1,353 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2012 Free Software Foundation, Inc. + + 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 . */ + +/* This source file was generated by: + gcc -o gdb.reverse/amd64-tailcall-reverse.S gdb.reverse/amd64-tailcall-reverse.c -Wall -S -dA -O2 -g + */ + + .file "amd64-tailcall-reverse.c" + .text +.Ltext0: + .p2align 4,,15 + .type g, @function +g: +.LFB0: + .file 1 "gdb.reverse/amd64-tailcall-reverse.c" + # gdb.reverse/amd64-tailcall-reverse.c:22 + .loc 1 22 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.reverse/amd64-tailcall-reverse.c:23 + .loc 1 23 0 + movl $2, v(%rip) +# SUCC: EXIT [100.0%] + ret + .cfi_endproc +.LFE0: + .size g, .-g + .p2align 4,,15 + .type f, @function +f: +.LFB1: + # gdb.reverse/amd64-tailcall-reverse.c:28 + .loc 1 28 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.reverse/amd64-tailcall-reverse.c:29 + .loc 1 29 0 + jmp g +# SUCC: EXIT [100.0%] (ab,sibcall) +.LVL0: + .cfi_endproc +.LFE1: + .size f, .-f + .section .text.startup,"ax",@progbits + .p2align 4,,15 + .globl main + .type main, @function +main: +.LFB2: + # gdb.reverse/amd64-tailcall-reverse.c:34 + .loc 1 34 0 + .cfi_startproc +# BLOCK 2 freq:10000 seq:0 +# PRED: ENTRY [100.0%] (fallthru) + # gdb.reverse/amd64-tailcall-reverse.c:35 + .loc 1 35 0 + movl $1, v(%rip) + # gdb.reverse/amd64-tailcall-reverse.c:36 + .loc 1 36 0 + call f +.LVL1: + # gdb.reverse/amd64-tailcall-reverse.c:37 + .loc 1 37 0 + movl $3, v(%rip) + # gdb.reverse/amd64-tailcall-reverse.c:39 + .loc 1 39 0 + xorl %eax, %eax +# SUCC: EXIT [100.0%] + ret + .cfi_endproc +.LFE2: + .size main, .-main + .comm v,4,4 + .text +.Letext0: + .section .debug_info,"",@progbits +.Ldebug_info0: + .long 0xc8 # Length of Compilation Unit Info + .value 0x2 # DWARF version number + .long .Ldebug_abbrev0 # Offset Into Abbrev. Section + .byte 0x8 # Pointer Size (in bytes) + .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit) + .long .LASF0 # DW_AT_producer: "GNU C 4.7.2 20120911 (prerelease)" + .byte 0x1 # DW_AT_language + .long .LASF1 # DW_AT_name: "gdb.reverse/amd64-tailcall-reverse.c" + .long .LASF2 # DW_AT_comp_dir: "" + .long .Ldebug_ranges0+0 # DW_AT_ranges + .quad 0 # DW_AT_low_pc + .quad 0 # DW_AT_entry_pc + .long .Ldebug_line0 # DW_AT_stmt_list + .uleb128 0x2 # (DIE (0x31) DW_TAG_subprogram) + .ascii "g\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.reverse/amd64-tailcall-reverse.c) + .byte 0x15 # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .quad .LFB0 # DW_AT_low_pc + .quad .LFE0 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .uleb128 0x3 # (DIE (0x4b) DW_TAG_subprogram) + .ascii "f\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.reverse/amd64-tailcall-reverse.c) + .byte 0x1b # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .quad .LFB1 # DW_AT_low_pc + .quad .LFE1 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .long 0x78 # DW_AT_sibling + .uleb128 0x4 # (DIE (0x69) DW_TAG_GNU_call_site) + .quad .LVL0 # DW_AT_low_pc + .byte 0x1 # DW_AT_GNU_tail_call + .long 0x31 # DW_AT_abstract_origin + .byte 0 # end of children of DIE 0x4b + .uleb128 0x5 # (DIE (0x78) DW_TAG_subprogram) + .byte 0x1 # DW_AT_external + .long .LASF3 # DW_AT_name: "main" + .byte 0x1 # DW_AT_decl_file (gdb.reverse/amd64-tailcall-reverse.c) + .byte 0x21 # DW_AT_decl_line + .byte 0x1 # DW_AT_prototyped + .long 0xab # DW_AT_type + .quad .LFB2 # DW_AT_low_pc + .quad .LFE2 # DW_AT_high_pc + .byte 0x2 # DW_AT_frame_base + .byte 0x77 # DW_OP_breg7 + .sleb128 8 + .byte 0x1 # DW_AT_GNU_all_call_sites + .long 0xab # DW_AT_sibling + .uleb128 0x6 # (DIE (0x9d) DW_TAG_GNU_call_site) + .quad .LVL1 # DW_AT_low_pc + .long 0x4b # DW_AT_abstract_origin + .byte 0 # end of children of DIE 0x78 + .uleb128 0x7 # (DIE (0xab) DW_TAG_base_type) + .byte 0x4 # DW_AT_byte_size + .byte 0x5 # DW_AT_encoding + .ascii "int\0" # DW_AT_name + .uleb128 0x8 # (DIE (0xb2) DW_TAG_variable) + .ascii "v\0" # DW_AT_name + .byte 0x1 # DW_AT_decl_file (gdb.reverse/amd64-tailcall-reverse.c) + .byte 0x12 # DW_AT_decl_line + .long 0xc6 # DW_AT_type + .byte 0x1 # DW_AT_external + .byte 0x9 # DW_AT_location + .byte 0x3 # DW_OP_addr + .quad v + .uleb128 0x9 # (DIE (0xc6) DW_TAG_volatile_type) + .long 0xab # DW_AT_type + .byte 0 # end of children of DIE 0xb + .section .debug_abbrev,"",@progbits +.Ldebug_abbrev0: + .uleb128 0x1 # (abbrev code) + .uleb128 0x11 # (TAG: DW_TAG_compile_unit) + .byte 0x1 # DW_children_yes + .uleb128 0x25 # (DW_AT_producer) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x13 # (DW_AT_language) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x1b # (DW_AT_comp_dir) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x55 # (DW_AT_ranges) + .uleb128 0x6 # (DW_FORM_data4) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x52 # (DW_AT_entry_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x10 # (DW_AT_stmt_list) + .uleb128 0x6 # (DW_FORM_data4) + .byte 0 + .byte 0 + .uleb128 0x2 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .byte 0 + .byte 0 + .uleb128 0x3 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0x1 # DW_children_yes + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x1 # (DW_AT_sibling) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x4 # (abbrev code) + .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) + .byte 0 # DW_children_no + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x2115 # (DW_AT_GNU_tail_call) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x31 # (DW_AT_abstract_origin) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x5 # (abbrev code) + .uleb128 0x2e # (TAG: DW_TAG_subprogram) + .byte 0x1 # DW_children_yes + .uleb128 0x3f # (DW_AT_external) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0xe # (DW_FORM_strp) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x27 # (DW_AT_prototyped) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x12 # (DW_AT_high_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x40 # (DW_AT_frame_base) + .uleb128 0xa # (DW_FORM_block1) + .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x1 # (DW_AT_sibling) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x6 # (abbrev code) + .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) + .byte 0 # DW_children_no + .uleb128 0x11 # (DW_AT_low_pc) + .uleb128 0x1 # (DW_FORM_addr) + .uleb128 0x31 # (DW_AT_abstract_origin) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .uleb128 0x7 # (abbrev code) + .uleb128 0x24 # (TAG: DW_TAG_base_type) + .byte 0 # DW_children_no + .uleb128 0xb # (DW_AT_byte_size) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3e # (DW_AT_encoding) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .byte 0 + .byte 0 + .uleb128 0x8 # (abbrev code) + .uleb128 0x34 # (TAG: DW_TAG_variable) + .byte 0 # DW_children_no + .uleb128 0x3 # (DW_AT_name) + .uleb128 0x8 # (DW_FORM_string) + .uleb128 0x3a # (DW_AT_decl_file) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x3b # (DW_AT_decl_line) + .uleb128 0xb # (DW_FORM_data1) + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .uleb128 0x3f # (DW_AT_external) + .uleb128 0xc # (DW_FORM_flag) + .uleb128 0x2 # (DW_AT_location) + .uleb128 0xa # (DW_FORM_block1) + .byte 0 + .byte 0 + .uleb128 0x9 # (abbrev code) + .uleb128 0x35 # (TAG: DW_TAG_volatile_type) + .byte 0 # DW_children_no + .uleb128 0x49 # (DW_AT_type) + .uleb128 0x13 # (DW_FORM_ref4) + .byte 0 + .byte 0 + .byte 0 + .section .debug_aranges,"",@progbits + .long 0x3c # Length of Address Ranges Info + .value 0x2 # DWARF Version + .long .Ldebug_info0 # Offset of Compilation Unit Info + .byte 0x8 # Size of Address + .byte 0 # Size of Segment Descriptor + .value 0 # Pad to 16 byte boundary + .value 0 + .quad .Ltext0 # Address + .quad .Letext0-.Ltext0 # Length + .quad .LFB2 # Address + .quad .LFE2-.LFB2 # Length + .quad 0 + .quad 0 + .section .debug_ranges,"",@progbits +.Ldebug_ranges0: + .quad .Ltext0 # Offset 0 + .quad .Letext0 + .quad .LFB2 # Offset 0x10 + .quad .LFE2 + .quad 0 + .quad 0 + .section .debug_line,"",@progbits +.Ldebug_line0: + .section .debug_str,"MS",@progbits,1 +.LASF3: + .string "main" +.LASF0: + .string "GNU C 4.7.2 20120911 (prerelease)" +.LASF1: + .string "gdb.reverse/amd64-tailcall-reverse.c" +.LASF2: + .string "" + .ident "GCC: (GNU) 4.7.2 20120911 (prerelease)" + .section .note.GNU-stack,"",@progbits diff --git a/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.c b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.c new file mode 100644 index 00000000000..d27572776c6 --- /dev/null +++ b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.c @@ -0,0 +1,39 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2012 Free Software Foundation, Inc. + + 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 . */ + +volatile int v; + +static __attribute__ ((noinline, noclone)) void +g (void) +{ + v = 2; +} + +static __attribute__ ((noinline, noclone)) void +f (void) +{ + g (); +} + +int +main (void) +{ + v = 1; + f (); + v = 3; + return 0; +} diff --git a/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.exp b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.exp new file mode 100644 index 00000000000..da9f4397b2b --- /dev/null +++ b/gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.exp @@ -0,0 +1,49 @@ +# Copyright (C) 2012 Free Software Foundation, Inc. +# +# 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 . + +if ![supports_reverse] { + return +} + +set opts {} +standard_testfile .S + +if [info exists COMPILE] { + # make check RUNTESTFLAGS="gdb.reverse/amd64-tailcall-reverse.exp COMPILE=1" + standard_testfile + lappend opts debug optimize=-O2 +} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } { + verbose "Skipping ${testfile}." + return +} + +if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $opts] } { + return -1 +} + +if ![runto_main] { + return -1 +} + +if [supports_process_record] { + gdb_test_no_output "record" +} + +gdb_test "next" {f \(\);} "next to f" +gdb_test "next" {v = 3;} "next to v = 3" + +# FAIL was: +# 29 g (); +gdb_test "reverse-next" {f \(\);}