2012-09-17 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ 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 <jan.kratochvil@redhat.com>
Pedro Alves <palves@redhat.com>
PR 14548
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;
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
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)));
2012-09-17 Jan Kratochvil <jan.kratochvil@redhat.com>
+ 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 <jan.kratochvil@redhat.com>
+
PR 14548
* gdb.reverse/singlejmp-reverse-nodebug.S: New file.
* gdb.reverse/singlejmp-reverse-nodebug.c: New file.
--- /dev/null
+/* 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 <http://www.gnu.org/licenses/>. */
+
+/* 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
--- /dev/null
+/* 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 <http://www.gnu.org/licenses/>. */
+
+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;
+}
--- /dev/null
+# 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 <http://www.gnu.org/licenses/>.
+
+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;"
--- /dev/null
+/* 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 <http://www.gnu.org/licenses/>. */
+
+/* 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
--- /dev/null
+/* 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 <http://www.gnu.org/licenses/>. */
+
+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;
+}
--- /dev/null
+# 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 <http://www.gnu.org/licenses/>.
+
+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 \(\);}
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