-# Copyright 2010-2015 Free Software Foundation, Inc.
+# Copyright 2010-2016 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
# Whether a file_name entry was seen.
variable _line_saw_file
+ # Whether a line table program has been seen.
+ variable _line_saw_program
+
+ # A Label for line table header generation.
+ variable _line_header_end_label
+
+ # The address size for debug ranges section.
+ variable _debug_ranges_64_bit
+
proc _process_one_constant {name value} {
variable _constants
variable _AT
foreach attr $attrs {
set attr_name [_map_name [lindex $attr 0] _AT]
- set attr_value [uplevel 2 [list subst [lindex $attr 1]]]
+
+ # When the length of ATTR is greater than 2, the last
+ # element of the list must be a form. The second through
+ # the penultimate elements are joined together and
+ # evaluated using subst. This allows constructs such as
+ # [gdb_target_symbol foo] to be used.
+
+ if {[llength $attr] > 2} {
+ set attr_value [uplevel 2 [list subst [join [lrange $attr 1 end-1]]]]
+ } else {
+ set attr_value [uplevel 2 [list subst [lindex $attr 1]]]
+ }
if { [string equal "MACRO_AT_func" $attr_name] } {
_handle_macro_at_func $attr_value
_handle_macro_at_range $attr_value
} else {
if {[llength $attr] > 2} {
- set attr_form [lindex $attr 2]
+ set attr_form [lindex $attr end]
} else {
# If the value looks like an integer, a form is required.
if [string is integer $attr_value] {
set _cu_label [_compute_label "cu${cu_num}_begin"]
set start_label [_compute_label "cu${cu_num}_start"]
set end_label [_compute_label "cu${cu_num}_end"]
-
+
define_label $_cu_label
if {$is_64} {
_op .4byte 0xffffffff
define_label $end_label
}
+ # Emit a DWARF .debug_ranges unit.
+ # OPTIONS is a list with an even number of elements containing
+ # option-name and option-value pairs.
+ # Current options are:
+ # is_64 0|1 - boolean indicating if you want to emit 64-bit DWARF
+ # default = 0 (32-bit)
+ #
+ # BODY is Tcl code that emits the content of the .debug_ranges
+ # unit, it is evaluated in the caller's context.
+ proc ranges {options body} {
+ variable _debug_ranges_64_bit
+
+ foreach { name value } $options {
+ switch -exact -- $name {
+ is_64 { set _debug_ranges_64_bit [subst $value] }
+ default { error "unknown option $name" }
+ }
+ }
+
+ set section ".debug_ranges"
+ _section $section
+
+ proc sequence {{ranges {}}} {
+ variable _debug_ranges_64_bit
+
+ # Emit the sequence of addresses.
+ set base ""
+ foreach range $ranges {
+ set range [uplevel 1 "subst \"$range\""]
+ set type [lindex $range 0]
+ switch -exact -- $type {
+ base {
+ set base [lrange $range 1 end]
+
+ if { $_debug_ranges_64_bit } then {
+ _op .8byte 0xffffffffffffffff "Base Marker"
+ _op .8byte $base "Base Address"
+ } else {
+ _op .4byte 0xffffffff "Base Marker"
+ _op .4byte $base "Base Address"
+ }
+ }
+ range {
+ set start [lindex $range 1]
+ set end [lrange $range 2 end]
+
+ if { $_debug_ranges_64_bit } then {
+ _op .8byte $start "Start Address"
+ _op .8byte $end "End Address"
+ } else {
+ _op .4byte $start "Start Address"
+ _op .4byte $end "End Address"
+ }
+ }
+ default { error "unknown range type: $type " }
+ }
+ }
+
+ # End of the sequence.
+ if { $_debug_ranges_64_bit } then {
+ _op .8byte 0x0 "End of Sequence Marker (Part 1)"
+ _op .8byte 0x0 "End of Sequence Marker (Part 2)"
+ } else {
+ _op .4byte 0x0 "End of Sequence Marker (Part 1)"
+ _op .4byte 0x0 "End of Sequence Marker (Part 2)"
+ }
+ }
+
+ uplevel $body
+ }
+
+
# Emit a DWARF .debug_line unit.
# OPTIONS is a list with an even number of elements containing
# option-name and option-value pairs.
proc lines {options label body} {
variable _line_count
variable _line_saw_file
+ variable _line_saw_program
+ variable _line_header_end_label
# Establish the defaults.
set is_64 0
set unit_len_label [_compute_label "line${_line_count}_start"]
set unit_end_label [_compute_label "line${_line_count}_end"]
set header_len_label [_compute_label "line${_line_count}_header_start"]
- set header_end_label [_compute_label "line${_line_count}_header_end"]
+ set _line_header_end_label [_compute_label "line${_line_count}_header_end"]
if {$is_64} {
_op .4byte 0xffffffff
_op .2byte $_unit_version version
if {$is_64} {
- _op .8byte "$header_end_label - $header_len_label" "header_length"
+ _op .8byte "$_line_header_end_label - $header_len_label" "header_length"
} else {
- _op .4byte "$header_end_label - $header_len_label" "header_length"
+ _op .4byte "$_line_header_end_label - $header_len_label" "header_length"
}
define_label $header_len_label
_op .byte 1 "minimum_instruction_length"
- _op .byte 0 "default_is_stmt"
+ _op .byte 1 "default_is_stmt"
_op .byte 1 "line_base"
_op .byte 1 "line_range"
- _op .byte 1 "opcode_base"
- # Since we emit opcode_base==1, we skip
- # standard_opcode_length table altogether.
+ _op .byte 10 "opcode_base"
+
+ # The standard_opcode_lengths table. The number of arguments
+ # for each of the standard opcodes. Generating 9 entries here
+ # matches the use of 10 in the opcode_base above. These 9
+ # entries match the 9 standard opcodes for DWARF2, making use
+ # of only 9 should be fine, even if we are generating DWARF3
+ # or DWARF4.
+ _op .byte 0 "standard opcode 1"
+ _op .byte 1 "standard opcode 2"
+ _op .byte 1 "standard opcode 3"
+ _op .byte 1 "standard opcode 4"
+ _op .byte 1 "standard opcode 5"
+ _op .byte 0 "standard opcode 6"
+ _op .byte 0 "standard opcode 7"
+ _op .byte 0 "standard opcode 8"
+ _op .byte 1 "standard opcode 9"
proc include_dir {dirname} {
_op .ascii [_quote $dirname]
_op .sleb128 0 "length"
}
+ proc program {statements} {
+ variable _line_saw_program
+ variable _line_header_end_label
+
+ if "! $_line_saw_program" {
+ # Terminate the file list.
+ _op .byte 0 "Terminator."
+ define_label $_line_header_end_label
+ set _line_saw_program 1
+ }
+
+ proc DW_LNE_set_address {addr} {
+ _op .byte 0
+ set start [new_label "set_address_start"]
+ set end [new_label "set_address_end"]
+ _op .uleb128 "${end} - ${start}"
+ define_label ${start}
+ _op .byte 2
+ if {[is_64_target]} {
+ _op .8byte ${addr}
+ } else {
+ _op .4byte ${addr}
+ }
+ define_label ${end}
+ }
+
+ proc DW_LNE_end_sequence {} {
+ _op .byte 0
+ _op .uleb128 1
+ _op .byte 1
+ }
+
+ proc DW_LNS_copy {} {
+ _op .byte 1
+ }
+
+ proc DW_LNS_advance_pc {offset} {
+ _op .byte 2
+ _op .uleb128 ${offset}
+ }
+
+ proc DW_LNS_advance_line {offset} {
+ _op .byte 3
+ _op .sleb128 ${offset}
+ }
+
+ foreach statement $statements {
+ uplevel 1 $statement
+ }
+ }
+
uplevel $body
rename include_dir ""
}
# Terminate the file list.
- _op .byte 0 "Terminator."
+ if "! $_line_saw_program" {
+ _op .byte 0 "Terminator."
+ define_label $_line_header_end_label
+ }
- define_label $header_end_label
define_label $unit_end_label
}
_op .ascii [_quote $name]
# Alignment.
set align 2
- set total [expr {($namelen + (1 << $align) - 1) & (-1 << $align)}]
+ set total [expr {($namelen + (1 << $align) - 1) & -(1 << $align)}]
for {set i $namelen} {$i < $total} {incr i} {
_op .byte 0
}
variable _cu_count
variable _line_count
variable _line_saw_file
+ variable _line_saw_program
+ variable _line_header_end_label
+ variable _debug_ranges_64_bit
if {!$_initialized} {
_read_constants
set _line_count 0
set _line_saw_file 0
+ set _line_saw_program 0
+ set _debug_ranges_64_bit [is_64_target]
# Not "uplevel" here, because we want to evaluate in this
# namespace. This is somewhat bad because it means we can't
projects / deliverable / binutils-gdb.git / blobdiff